- Vanadium chlorides supported by BIAN (BIAN?=?bis(arylimo)-acenaphthene) ligands: Synthesis, characterization, and catalysis on ethylene polymerization
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Several vanadium chlorides bearing bis(arylimino)-acenaphthene (BIAN) ligands, (2,6-Me2C6H3-BIAN)V(THF)Cl3 (1), (2,6-Et2C6H3-BIAN)V(THF)Cl3 (2), (2,6-iPrsu
- Xu, Shu-yun,Chen, Xue-meng,Huang, Li-cheng,Li, Feng,Gao, Wei
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p. 146 - 151
(2019/03/14)
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- Iron complexes of BIANs: Redox trends and electrocatalysis of hydrogen evolution
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We report new iron(II, III) complexes in the framework of redox non-innocent BIAN ligands acting as highly active electrocatalysts for proton reduction. The iron complexes have been investigated by cyclic voltammetry, electron paramagnetic resonance and U
- Khrizanforova,Morozov,Khrizanforov,Lukoyanov,Kataeva,Fedushkin,Budnikova, Yu.H.
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- Novel yttrium and zirconium catalysts featuring reduced Ar-BIANH2 ligands for olefin hydroamination (Ar-BIANH2 = bis-arylaminoacenaphthylene)
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The novel class of bis-arylaminoacenaphthylenes (Ar-BIANH2) was employed for the preparation of zirconium and yttrium complexes to be used as catalysts for cyclohydroamination of a number of primary and secondary aminoalkenes. The complex [(2,6
- Cimino, Alessandro,Moscatelli, Filippo,Ferretti, Francesco,Ragaini, Fabio,Germain, Stéphane,Hannedouche, Jér?me,Schulz, Emmanuelle,Luconi, Lapo,Rossin, Andrea,Giambastiani, Giuliano
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supporting information
p. 10285 - 10293
(2016/12/07)
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- Sterically-directed consecutive and size-selective self-assembly of palladium diphosphane complexes with an Ar-BIAN ligand: Unexpected formation of pentameric and hexameric aggregates
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The coordination properties of N,N'-bis[4-(4-pyridyl)phenyl] acenaphthenequinonediimine (L1) and N,N'-bis[4-(2-pyridyl)phenyl] acenaphthenequinonediimine (L2) were investigated in self-assembly with palladium diphosphane complexes [P
- Hollo-Sitkei, Eszter,Szalontai, Gabor,Lois, Isabella,Goemoery, Agnes,Pollreisz, Ferenc,Parkanyi, Laszlo,Jude, Hershel,Besenyei, Gabor
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supporting information; experimental part
p. 10620 - 10633
(2010/04/24)
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- Synthesis of Ar-BIAN ligands (Ar-BIAN = bis(aryl)acenaphthenequinonediimine) having strong electron-withdrawing substituents on the aryl rings and their relative coordination strength toward palladium(0) and-(II) complexes
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The synthesis of Ar-BIAN ligands (Ar-BIAN = bis(aryl)acenaphthenequinonediimine) having strong electron-withdrawing substituents on the aryl ring is reported. Most of these derivatives had escaped isolation in a pure form up to now. A quantitative scale of coordination strength of the newly synthesized ligands in the complexes Pd0(L)(DMFU) (DMFU = dimethylfumarate) and PdII(L)(OAc)2 has been measured. The series also includes some previously known Ar-BIAN ligands, phenanthroline, bipyridine, and Ph-DAB (Ph-DAB = diphenyldiazabutadiene). A good correlation is observed for the Ar-BIAN ligands between the Hammet σ constants of the substituents of the aryl group and the relative binding constant with respect to Ph-BIAN. The values for the p constant for the Pd(L)(DMFU) and Pd(L)(OAc)2 series are respectively -1.57 and -3.44, indicating that electron-rich ligands bind more strongly in both series, but the effect is much stronger in the Pd(II) series. The observed effect is relevant to the question of the effective oxidation state of palladium in the Pd(L)(DMFU) complex. Phenanthroline and bipyridine are stronger ligands than any Ar-BIAN compound, whereas Ph-DAB is the weakest ligand of all. The sterically hindered 2,6-Pr2iC6H6-BIAN binds less strongly than its basicity would suggest.
- Gasperini, Michela,Ragaini, Fabio,Cenini, Sergio
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p. 2950 - 2957
(2008/10/08)
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