- Synthesis of 2,9-Dichloro-1,10-phenanthroline from N,N'-Annelated Phenanthrolinediones
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Though the chlorination of an N,N'-annelated phenanthrolinedione, 3,6,7,9-tetrahydro-5H-diazepinophenanthroline-3,9-dione, gave 2,9-dichloro-1,10-phenanthroline, another dione, 3,5,6,8-tetrahydropyrazinophenanthroline-3,8-dione, did not.It demonstrated a simultanous introduction of two chlorine substituents to non-substituted 1,10-phenanthroline via only the former intermediate.
- Yamada, Masaki,Nakamura, Yoshio,Kuroda, Shigeyasu,Shimao, Ichiro
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- Chemistry of Polydentate Ligands. Part 5. Complexes of 2,9-Dihydrazino-derivatives of 1,10-Phenanthroline. Dependence of Coordination Number of a Ligand on the Anion present
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Two quadridentate ligands have been prepared by rection of 2,9-dichloro-1,10-phenantroline with hydrazine hydrate and methylhydrazine.The formation of complexes of AgI, FII, MnII, ZnII, CdII, HgII, and NiII with these ligands is described.Electrical conductivity, i.r., and 1H n.m.r. spectral data of diamagnetic complexes are reported.The compound 2,9-dihydrazino-1,10-phenantroline can also act as a tridentate ligand, as in the complexes with nickel perchlorate, where the metal to ligand ratio is 1 : 2.Electronic spectral data of the nickel(II) complexes are presented.The preparation of a tridentate ligand, 2-(1-methylhydrazino)-1,10-phenantroline, and of nickel(II) and iron(II) complexes of this ligand is also reported.
- Lewis, Jack,O'Donoghue, Timothy D.
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- Synthesis of Novel Chiral Phenanthroline Ligands and a Copper Complex
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A novel class of chiral multidentate ligands has been designed and synthesized from the important classic ligand 1,10-phenanthroline and amino acids. The ligands were proven to be able to coordinate with copper(2+) ion by the formation of a novel chiral c
- Li, Jian,Tang, Jingjing,Yang, Xueyan,Zhang, Zhipeng
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- Ligand-Controlled Product Selectivity in Electrochemical Carbon Dioxide Reduction Using Manganese Bipyridine Catalysts
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Electrocatalysis is a promising tool for utilizing carbon dioxide as a feedstock in the chemical industry. However, controlling the selectivity for different CO2 reduction products remains a major challenge. We report a series of manganese carbonyl complexes with elaborated bipyridine or phenanthroline ligands that can reduce CO2 to either formic acid, if the ligand structure contains strategically positioned tertiary amines, or CO, if the amine groups are absent in the ligand or are placed far from the metal center. The amine-modified complexes are benchmarked to be among the most active catalysts for reducing CO2 to formic acid, with a maximum turnover frequency of up to 5500 s-1 at an overpotential of 630 mV. The conversion even works at overpotentials as low as 300 mV, although through an alternative mechanism. Mechanistically, the formation of a Mn-hydride species aided by in situ protonated amine groups was determined to be a key intermediate by cyclic voltammetry, 1H NMR, DFT calculations, and infrared spectroelectrochemistry.
- R?nne, Magnus H.,Cho, Dasol,Madsen, Monica R.,Jakobsen, Joakim B.,Eom, Seunghwan,Escoudé, émile,Hammersh?j, Hans Christian D.,Nielsen, Dennis U.,Pedersen, Steen U.,Baik, Mu-Hyun,Skrydstrup, Troels,Daasbjerg, Kim
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p. 4265 - 4275
(2020/03/05)
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- Cu-tethered macrocycle catalysts: Synthesis and size-selective CO2-fixation to propargylamines under ambient conditions
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A novel air-stable, Cu-tethered macrocycle catalyst possessing a large inner cavity was successfully synthesized, creating a unique supramolecular catalytic system. The catalyst was utilized in the CO2-fixation reaction to propargylamines. The reaction proceeded more efficiently compared to the conventional CuI catalyst under atmospheric CO2 condition. Notably, owing to its topological effect, the Cu-tethered macrocycle catalyst exhibited unique substrate size selectivity.
- Kim, Nam-Kyun,Sogawa, Hiromitsu,Takata, Toshikazu
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- BIS-PHENANTHROLINE IRON MACROCYCLE COMPLEX FOR OXYGEN REDUCTION REACTION
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Disclosed are compounds, compositions, and methods useful for the oxygen reduction reaction (ORR) and capable of operating efficiently at low overpotentials.
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- With the antibacterial activity of the substituted 2 - amido - 1, 10 - eurepium (by machine translation)
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The invention relates to a compound of formula I is shown of a substituted 2 - amido - 1, 10 - eurepium antibacterial compound or its physiologically acceptable salt and their method of preparation, also relates to a pharmaceutical composition comprising said compound. Wherein each substituent defined as stated in claims. (by machine translation)
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- Synthesis, Structure, Property, and Dinuclear Cu(II) Complexation of Tetraoxacalix[2]arene[2]phenanthrolines
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A number of novel tetraoxacalix[2]arene[2]phenanthrolines 7-11 containing phenanthroline and diverse aromatic linkages were conveniently synthesized by a one-pot protocol between a series of dihydroxy arenes and 1,10-phenanthroline derivatives. Single-crystal diffraction analysis revealed that the resulting macrocycles possess diverse conformational and cavity structures which are regulated by the different aromatic linkages. In line with the length of the aromatic linkages, the distance between the two phenanthroline moieties (dN-N) gradually increases from 6.92 to 13.30 ?, respectively. The physicochemical properties of these macrocyclic compounds were investigated by spectroscopic, CV, and DPV measurements. Owing to the coordination ability of the phenanthroline moieties and the tunable conformational structure, the macrocyclic hosts can form distinct dinuclear complexation with Cu2+. Typically, with a short aromatic linkage the 7b-2Cu(II) complex gives an O-bridged dicopper structure, while with long linkage the 11b-2Cu(II) complex possesses two discrete copper centers. The spectroscopic structure and the redox property of the dicopper complexes were investigated by XPS, CV, and DPV techniques. This work hence provides a platform to access biomimetic copper-containing small-molecule models with well-defined structures.
- Wang, Xue-Yuan,Ao, Yu-Fei,Wang, Qi-Qiang,Wang, De-Xian
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p. 13461 - 13469
(2018/10/25)
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- Hard-and-soft phosphinoxide receptors for f-element binding: structure and photophysical properties of europium(iii) complexes
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New phosphinoyl-containing tetradentate heterocycles preorganised for metal ion binding were designed and prepared in high yields. The X-ray structures of two allied phosphinoyl-bearing 2,2′-bipyridyl and phenanthroline ligands, as well as closely related structures of 2,6-bis(diphenylphosphinoyl)pyridine and 9-(diphenylphosphinoyl)-1,10-phenanthroline-2-one, are reported. Complexes of nitrates of several lanthanides and trifluoroacetate of Eu(iii) with two phosphinoyl-bearing 2,2′-bipyridyl and phenanthroline ligands were isolated and characterised. The first structures of lanthanide complexes with phosphinoyl-bearing 2,2′-bipyridyl and phenanthroline ligands are reported. The nature of the counter-ion is crucial for the coordination environment of the metal ion. The photophysical properties of the complexes differring in both the nature of the ligand and counter-ion were investigated. The photophysical properties of the complexes are strongly ligand- and counter-ion-dependent. Absorbance and luminescence excitation spectra of complexes showed main peaks in the UV range which correspond to the absorption of light by the ligand and these are ligand-dependent. Luminescence spectra of complexes show typical europium emission in the red region with a high quantum yield, which orresponds to the transitions5D0→7FJ (J = 0-6). The value of deviation of the components of5D0 →7F2 and5D0 →7F1 transitions from the inversion centre shows a larger dependence on the counter-ion than on the nature of the ligand. The value of the luminescence quantum yield is larger for europium complexes with 2,2′-bipyridyl-based ligands and NO3 counter-ions than for complexes with phenanthroline-based ligands and NO3 counter-ions. A low dependence of the luminescence lifetime of Eu complexes on the nature of the ligand has been demonstrated: values in the solid state were in the range 1.1-2.0 ms.
- Borisova, Nataliya E.,Kharcheva, Anastasia V.,Patsaeva, Svetlana V.,Korotkov, Leonid A.,Bakaev, Sergey,Reshetova, Marina D.,Lyssenko, Konstantin A.,Belova, Elena V.,Myasoedov, Boris F.
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p. 2238 - 2248
(2017/02/26)
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- Synthesis and Characterization of a Ruthenium(II) Complex for the Development of Supramolecular Photocatalysts Containing Multidentate Coordination Spheres
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The synthesis of the new bis-heteroleptic RuII complex [(tbbpy)2Ru(dptpphz)](PF6)2 (7), that exhibits a tetradentate coordination sphere for a second metal centre, and its characterization are presented. The complex shows similar photostability and redox properties regarding the first ligand-centred reductions compared to its tpphz analogue. Concentration-dependent NMR investigations were performed and a dimerization constant (KD = 83 ± 5) could be calculated, which was significantly lower than that of other tpphz systems. Photophysical investigations reveal a stabilizing effect of the two electron-withdrawing 2-pyridyl substituents on π–π* transition of the phenazine sphere. The typical H2O-induced light-switch effects have also been observed. To further highlight the potential of the tetradentate coordination site, the ZnII adduct of 7 was prepared and preliminary studied.
- Huber, Fabian L.,Nauroozi, Djawed,Mengele, Alexander K.,Rau, Sven
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p. 4020 - 4027
(2017/09/20)
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- Molecular design of a novel ligand for Menshutkin complexation of Bi(iii) from aqueous acidic copper sulfate electrolyte solutions and experimental investigations
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5-Amino-2,9-diphenoxy-1,10-phenanthroline functionalized silica is designed to reversibly adsorb bismuth impurities from strongly acidic aqueous copper sulfate solutions. The ligand interacts with Bi(iii) ions through weak non-covalent interactions due to the presence of the arene-π electron cloud of the phenyl moiety. The stronger complexation of Bi(iii) as compared to Sb(iii), As(iii) and Cu(ii) ions with the ligand was explored using Density Functional Theory (DFT) under solvated conditions. The theoretical predictions were validated by experimental studies with Bi(iii)/Cu(ii) mixtures in aqueous acidic solutions. The ligand shows very high selectivity (α = 978) towards Bi(iii) in the presence of a high concentration of Cu(ii) in the acidic solutions.
- Arora, Jyotsna S.,Gaikar, Vilas G.
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p. 39663 - 39674
(2016/05/24)
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- A Ligand That Targets CUG Trinucleotide Repeats
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The development of small molecules that can recognize specific RNA secondary and tertiary structures is currently an important research topic for developing tools to modulate gene expression and therapeutic drugs. Expanded CUG trinucleotide repeats, known as toxic RNA, capture the splicing factor MBNL1 and are causative of neurological disorder myotonic dystrophy type 1 (DM1). Herein, the rational molecular design, synthesis, and binding analysis of 2,9-diaminoalkyl-substituted 1,10-phenanthroline (DAP), which bound to CUG trinucleotide repeats, is described. The results of melting temperature (Tm) analyses, surface plasmon resonance (SPR) assay, and electrospray spray ionization time-of-flight (ESI-TOF) mass spectrometry showed that DAP bound to r(CUG)9but not to r(CAG)9and r(CGG)9. The dual luciferase assay clearly indicated DAP bound to the r(CUG)nrepeat by affecting the translation in vitro.
- Li, Jinxing,Matsumoto, Jun,Bai, Li-Ping,Murata, Asako,Dohno, Chikara,Nakatani, Kazuhiko
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p. 14881 - 14889
(2016/10/11)
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- 2,9-dipyridyl-1,10-phenanthroline derivatives useful as actinide ligands, method for synthesizing same, and uses thereof
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The invention relates to novel compounds useful as ligands of actinides and which meet general formula (I) hereinafter: where: R1 and R2=H, a C1 to C12 hydrocarbon group, a monocyclic aryl or aryl-(C1 to C6)alkyl group;R3, R4, R5 and R6=H; a C1 to C12 hydrocarbon group; a monocyclic aryl or aryl-(C1 to C6)alkyl group; a —NR7R8 or —NR7COR8 group where R7=H, a C1 to C12 hydrocarbon group, a monocyclic aryl or aryl-(C1 to C6)alkyl group, while R8=a C1 to C12 hydrocarbon group, a monocyclic aryl or aryl-(C1 to C6)alkyl group; an —OR9 or —SR9 group where R9=a C1 to C12 hydrocarbon group, a monocyclic C6 aryl or aryl-(C1 to C6)alkyl group. A further subject of the invention is a method for synthesizing these compounds and the uses thereof.
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- Torands revisited: Metal sequestration and self-assembly of cyclo-2,9-tris-1,10-phenanthroline hexaaza macrocycles
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A series of novel toroidal cyclo-2,9-tris-1,10-phenanthroline macrocycles with an unusual hexaaza cavity are reported. Nickel-mediated Yamamoto aryl-aryl coupling was found to be a versatile tool for the cyclotrimerization of functionalized 1,10-phenathroline precursors. Due to the now improved processability, both liquid-crystalline behavior in the bulk phase and two-dimensional self-assembly at the molecular level could be studied, for the first time, for a torand system. The macrocycles exhibited a strong affinity for the complexation of different metal cations, as evidenced by MALDI-TOF analysis and spectroscopic methods. Experimental results were correlated to an extensive computational study of the cyclo-2,9-tris-1,10-phenanthroline cavity and its binding mode for metal cations. Due to the combination of several interesting features, toroidal macrocycles may find future applications in the field of ion and charge transport through molecular channels, as well as for chemical sensing and molecular writing in surface-confined monolayers under STM conditions.
- Schwab, Matthias Georg,Takase, Masayoshi,Mavrinsky, Alexey,Pisula, Wojciech,Feng, Xinliang,Gámez, José A.,Thiel, Walter,Mali, Kunal S.,De Feyter, Steven,Müllen, Klaus
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p. 8426 - 8434
(2015/06/02)
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- Towards allosteric receptors synthesis of β-cyclodextrin- functionalised 2,2'-bipyridines and their metal complexes
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Herein, we present three new 2,2'-bipyridines that carry two β-cyclodextrin moieties in different substitution patterns. When coordinated by zinc(II) or copper(I) ions (or their complexes), these compounds undergo conformational changes and switch between
- Kremer, Christopher,Schnakenburg, Gregor,Lutzen, Arne
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p. 814 - 824
(2014/05/06)
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- 1,10-phenanthroline and non-symmetrical 1,3,5-triazine dipicolinamide-based ligands for group actinide extraction
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The synthesis and evaluation of new extractants for spent nuclear fuel reprocessing are described. New bitopic ligands constituted of phenanthroline and 1,3,5-triazine cores functionalized by picolinamide groups were designed. Synthetic routes were investigated and optimized to obtain twelve new polyaza-heterocyclic ligands. In particular, an efficient and versatile methodology was developed to access non-symmetric 2-substituted-4,6-di(6- picolin-2-yl)-1,3,5-triazines from the 1,3,5-triazapentadiene precursor in the presence of anhydride reagents. Extraction studies showed the ability of both ligand series to extract and separate actinides selectively at different oxidation states (UVI, NpV,VI, AmIII, Cm III, and PuIV) from an acidic solution (3 M HNO 3). Phenanthroline-based ligands show the most promising efficiency for use in the group actinide extraction (GANEX) process due to a higher number of donor nitrogen atoms and a suitable pre-organization of the dipicolinamide-1,10-phenanthroline architecture. Actinides/lanthanides extraction: The synthesis and evaluation of new bitopic ligands constituted of poly-aza-aromatic units functionalized by amide groups for spent nuclear fuel reprocessing is described. Original synthetic routes were investigated to obtain the ligands (see figure).
- Bisson, Julia,Dehaudt, Jeremy,Charbonnel, Marie-Christine,Guillaneux, Denis,Miguirditchian, Manuel,Marie, Cecile,Boubals, Nathalie,Dutech, Guy,Pipelier, Muriel,Blot, Virginie,Dubreuil, Didier
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p. 7819 - 7829
(2014/07/07)
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- Organic and organometallic nanofibers formed by supramolecular assembly of diamond-shaped macrocyclic ligands and PdII complexes
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Stacked rings: A diamond-shaped macrocycle with two inward phenanthroline ligands and outward long alkyl chains, and its PdII complex form organic and organometallic fibrous aggregates, respectively, as revealed by NMR, UV/Vis, AFM, and TEM measurements. The most likely structures are face-to-face stacked macrocycles, generating nanotubes.
- Kuritani, Masumi,Tashiro, Shohei,Shionoya, Mitsuhiko
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p. 1368 - 1371
(2013/07/26)
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- RuCp* complexes of ambidentate 4,5-diazafluorene derivatives: From linkage isomers to coordination-driven self-assembly
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The coordination chemistry of the {RuCp}+ fragment was studied toward several 4,5-diazafluorene derivatives. The ambidentate nature of these 4,5-diazafluorene derivatives with multiple coordination sites allowed for the syntheses of different linkage isomers and self-assembled macrocycles. Both a tetramer (2) and a monomer (3) of [RuCpL] (where L- = 4,5-diazafluorenide) were prepared with the L- ligand. The dimeric head-to-tail macrocycles [CpRu(LpH)]2Cl2 (4) and [CpRuLp]2 (5) were obtained with the ditopic L pH and Lp- ligands (where LpH = 9-(2-(diphenylphosphino)ethyl)-4,5-diazafluorene and Lp- = 9-(2-(diphenylphosphino)ethyl)-4,5-diazafluorenide). The bulky arene-substituted LMesH ligand (where LMesH = 3,6-dimesityl-4,5-diazafluorene) was prepared, and its coordination to {RuCp}+ gave [CpRu(LMesH)]Cl (13). The selective syntheses of different linkage isomers of [RuCp(LMes)] (14 and 15) (where LMes- = 3,6-dimesityl-4,5-diazafluorenide) were also demonstrated.
- Annibale, Vincent T.,Batcup, Rhys,Bai, Tao,Hughes, Sarah J.,Song, Datong
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p. 6511 - 6521
(2013/12/04)
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- RARE EARTH METAL COMPLEX HAVING PHENANTHROLINE COMPOUND AS LIGAND
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The present invention provides a rare earth metal complex represented by the following formula (I).
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- PHENANTHROLINE DERIVATIVES AND THEIR USE AS LIGANDS
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The present invention provides a novel compound having a phenanthroline structure represented by the following formula (I) or a salt thereof useful as a ligand of an analytical marker using fluorescence.
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- Pyridazine and Pyrrole Compounds, Processes For Obtaining Them and Uses
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The present invention relates to nonlinear oligopyridazine compounds, to processes for obtaining them, to their uses, and also to their reduction to oligopyrroles and to the uses of the pyridazinylpyrrole and oligopyrrole compounds obtained. The invention relates in particular to the uses as medicaments, in particular for treating pathologies such as cancer, bacterial infections or parasitic infections, and also the uses in the materials, environmental, electronics and optics field.
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Page/Page column 35-36
(2010/12/29)
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- Expanded π-electron systems, tri(phenanthro)hexaazatriphenylenes and tri(phenanthrolino)hexaazatriphenylenes, that are self-assembled to form one-dimensional aggregates
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This paper reports the self-assembling and electrochemical nature of hexaazatriphenylene-based electron-deficient heteroaromatics with an expanded π-electron system. The tri(phenanthro)hexaazatriphenylenes (TPHAT-Cs) and tri(phenanthrolino)hexaazatriphenylenes (TPHAT-Ns) were prepared by condensation reactions of the corresponding phenanthrenequinones and phenanthrolinediones, respectively, with hexaaminobenzene. Their electron affinity was indicated from cyclic voltammetry measurements, in which the first reduction potentials were evaluated at around -1.7 V (vs Fc/Fc+) in dichloromethane. In nonpolar and polar solvents and in the film state, the TPHAT-Cs and TPHAT-Ns formed one-dimensional aggregates with an H-type parallel stacking mode. In the MALDI-TOF mass spectra, significant peaks were seen at several multiples of the parent ion up to tetramer aggregates. The 1H NMR spectra indicated a line-broadening effect due to the aggregation. The UV-vis and fluorescence spectra showed a concentration dependence, which is attributed to a dynamic exchange between the monomer and aggregate species. The order of the aggregative nature was estimated from the concentration dependence and the fluorescence quantum yield. By replacement of the peripheral aromatic moieties instead of the phenanthrene (TPHAT-Cs) with the phenanthroline (TPHAT-Ns), the aggregative nature was enhanced.
- Ishi-I, Tsutomu,Hirashima, Ryoichi,Tsutsumi, Naotaka,Amemori, Shogo,Matsuki, Shigeki,Teshima, Yuuki,Kuwahara, Rempei,Mataka, Shuntaro
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scheme or table
p. 6858 - 6868
(2010/11/24)
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- Towards allosteric receptors - Synthesis of Resorcinarene-Functionalized 2,2′-Bipyridines and their metal complexes
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Based on a first: example of an allosteric hemicarcerand (1) we prepared four new 2,2′bipyridines that carry resorcinarene moieties in a highly convergent manner. Upon coordination to suitable transition metal ions or their complexes these compounds undergo conformational changes in a way that: they switch between "open" and. "closed" forms (2, 3, and 4) or vice versa (5), thus, bringing together or separating the two functional, moieties on the central, bipyridine, Among the transition metal complexes that act: as effectors for the conformational switching, [Re(CO)5Cl] and monomeric copper(I) complexes of sterically hindered 2,9-arylated 1,10-phenanthrolines proved, to be very effective.
- Staats, Holger,Eggers, Friederike,Hass, Oliver,Fahrenkrug, Frank,Matthey, Jens,Luening, Ulrich,Luetzen, Arne
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scheme or table
p. 4777 - 4792
(2009/12/25)
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- Concave 1,10-phenanthrolines as ligands for cyclopropanations - Towards a deeper understanding of the stereoselectivity
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Four new mono- and bimacrocyclic 1,10-phenanthrolines - 3b and 4a-c - containing aryl bridgeheads have been synthe- sised. The etherification of the aryl bridgeheads was accomplished by Williamson or Mitsunobu reactions. A key step in the synthesis of the macrocyclic phenanthrolines 3 and 4 is the Suzuki coupling of 2,9-diiodo-1,10-phenan- throline (12) with the appropriately substituted boronic acids 17 and 20. Ring-closing metathesis and hydrogenation completed the synthesis. The resulting macrocyclic 1,10-phenan- throlines 3b and 4a-c were tested as ligands in a copper(I)- catalysed stereoselective cyclopropanation.
- Eggers, Friederike,Luening, Ulrich
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scheme or table
p. 2328 - 2341
(2009/09/05)
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- Synthesis of a bis-macrocycle containing two back-to-back rigidly connected 1,10-phenanthroline units as a central core and its incorporation in a handcuff-like catenane
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A bis-macrocycle containing two back-to-back connected 1,10-phenanthroline chelates has been prepared. The synthetic strategy involves the preparation of a monocyclic precursor consisting of a 1,10-phenanthroline5,6-dione fragment incorporated in a 30-mem
- Frey, Julien,Kraus, Tomas,Heitz, Valerie,Sauvage, Jean-Pierre
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p. 7584 - 7594
(2008/03/14)
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- Facile synthesis of polypyridine esters: A route to functionalized aldehydes
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A wide range of ester-substituted oligopyridines, based on pyridine, 1,8-naphthyridine, 1,10-phenanthroline, 2,2'-bipyridine, and 2,2':6',6-terpyridine units, has been synthesized and fully characterized. The principal reaction involves the palladium(0)-catalyzed carboalkoxylation of the bromo-, chloro- or triflate-substituted pyridine unit with carbon monoxide in the presence of a primary alcohol as nucleophile and a tertiary amine as base. Monofunctionalization of disubstituted compounds is realized by reaction in ethanol under mild conditions (70 °C, 1 atm CO). Stepwise reduction of selected esters with sodium borohydride, followed by Swern oxidation, affords the corresponding carbaldehydes in good yield. Several products are reported for the first time. The synthetic methods reported herein represent a valuable approach to the large-scale preparation of ester-functionalized oligopyridines that can be subsequently transformed to the corresponding alcohols or acids. These procedures also provide a practical methodology to the rational design of ligands bearing different kinds of functionalities.
- El-Ghayoury,Ziessel
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p. 7757 - 7763
(2007/10/03)
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- Spectroscopic and Electrochemical Characterisation of some Complexes with Azamacrocycle Ligands
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This work describes the synthesis and infrared, uv-visible, 1H nmr and electrochemical characterisation of azacyclophanes and naphthalocyanines ligands and some NiII CuII, CoII and ZnII complexes.The characterisation of some non commercial precursors of these compounds is also informed.The results show that the ligands and complexes are essentially planar, their optical properties are similar to those found in phthalocyanines and some ligands stabilises NiI or CuI at potentials less than 1 V vs ESC.In order to increase the solubility of these systems in polar solvents, some alternatives to sulphonation are proposed.
- Costamagna, J.,Canales, J.,Vargas, J.,Alvarado, A.,Ferraudi, G.
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p. 877 - 884
(2007/10/02)
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- Catalyst compositions and a process for polymerizing carbon monoxide and olefins
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Carbon monoxide and at least one olefinically unsaturated organic compound may be polymerized by contacting the monomers in the presence of a catalyst which comprises a Group VIII metal compound of palladium, cobalt or nickel, a halide of tin or germanium, a nitrogen bidentate ligand and an organic oxidant. The polymers prepared are linear alternating polymers which consist of units with the formula STR1 where A is the residue of an alkenically unsaturated organic compound monomer.
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- A NEW FAMILY OF AROMATIC POLYIMINE CHELATES SUBSTITUTED WITH TWO DIPHENYLPHOSPHINES
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Reaction of lithium diphenylphosphide with vicinal nitrogen disubstituted polyimines such as 1,8-naphtyridine, 4'-phenyl-2,2',6',2''-terpyridine, 2,2'-bipyridine or 1,10-phenanthroline produces in high yield a new series of heterofunctional ligands.
- Ziessel, Raymond
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p. 463 - 466
(2007/10/02)
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