- Synthesis, characterization and luminescent properties of copper(I) halide complexes containing biphenyl bidentate phosphine ligand
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Copper(I) halide complexes having thermally activated delayed fluorescence (TADF) and phosphorescence have attracted much attention. Here, a series of four-coordinate dinuclear copper(I) halide complexes, [CuX(bpbp)]2 (bpbp?=?2,2′-bis(diphenylphosphino)biphenyl, X?=?I (1), Br (2) and Cl (3)), were synthesized, and their molecular structures and photophysical properties were investigated. The structural analysis reveals that two copper(I) centers are bridged by two halogen ligands to form a dinuclear structure with a four-membered Cu2X2 ring. These complexes exhibit yellow to blue emission in the solid state at room temperature and have peak emission wavelengths at 575–487?nm with microsecond lifetimes (τ?=?6.2–19.8?μs) and low emission quantum yields (0.01%). The emissions of 1–3 originate from MLCT, XLCT, and IL (intraligand) transitions. Three complexes displayed good thermal stability.
- Chen, Bu-Lin,Liu, Li,Zhong, Xin-Xin,Asiri, Abdullah M.,Alamry, Khalid A.,Li, Guang-Hua,Li, Fa-Bao,Zhu, Nian-Yong,Wong, Wai-Yeung,Qin, Hai-Mei
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p. 3907 - 3919
(2017/12/28)
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- P-CHIROGENIC ORGANOPHOSPHORUS COMPOUNDS
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The present invention relates to novel P-chirogenic organophosphorus compounds of general formula (I). The present invention also provides a process for the synthesis of said compounds of formula (I). The present invention also relates to intermediate products of general formulae (II), (III) and (IV), as shown below, which are involved in the synthesis of compounds (I). Further, the invention relates to metal complexes comprising compounds (I) as ligands. The novel compounds and complexes of the present invention are useful in asymmetric catalysis by transition metal complexes or organocatalysis, especially for asymmetric hydrogenation or allylation. Compounds of general formula (I) may useful as agrochemical and therapeutic substances, or as reagents or intermediates for fine chemistry.
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Page/Page column 80
(2013/03/26)
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- Catalytic palladium phosphination: Modular synthesis of C 1-symmetric biaryl-based diphosphines
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A new family of C1-symmetric bis(diphenylphosphino)biphenyls have been prepared starting from readily available ortho,ortho′- dihalobiphenyl precursors by a palladium-catalyzed C-P coupling reaction. This process does not require the use of an
- Bonnafoux, Laurence,Gramage-Doria, Rafael,Colobert, Francoise,Leroux, Frederic R.
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supporting information; experimental part
p. 11008 - 11016
(2011/10/19)
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- General synthetic route to chiral flexible biphenylphosphine ligands: The use of a chiral additive enables the preparation and observation of metal complexes incorporating the enantiopure form
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equation presented The enantio-and diastereomerically pure metal complex of a chirally flexible BIPHEP ligand is obtained through enantiomer-selective coordination of a BIPHEP-Ru complex with enantiopure 3,3′-dimethyldiaminobinaphthyl, DM-DBN, followed by
- Mikami, Koichi,Aikawa, Kohsuke,Korenaga, Toshinobu
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p. 243 - 245
(2007/10/03)
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- 2,2′-Bis(diphenylphosphino)biphenyl revisited
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The reaction between 2,2′-dilithiobiphenyl and two equivalents of chlorodiphenylphosphine is confirmed to afford equal amounts of 9-phenyl-9-phosphafluorene (2) and triphenylphosphine. 2,2′-Bis(diphenylphosphino)biphenyl (1,1′-biphenyl-2,2′-diylbis(diphenylphosphine) (1)) can be conveniently prepared by Ullmann coupling of 2-iodophenyldiphenylphosphine oxide and subsequent reduction with trichlorosilane.
- Desponds, Olivier,Schlosser, Manfred
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p. 257 - 261
(2007/10/03)
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- PREPARATION AND CATALYTIC PROPERTIES OF CATIONIC RHODIUM(I) COMPLEXES CONTAINING 2,2'-BIS(DIPHENYLPHOSPHINO)BIPHENYL
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Complexes of the type X (cod is 1,5-cyclooctadiene, bpbp is 2,2'-bis(diphenylphosphino)biphenyl, and X is Cl-, d-α-bromocamphor-?-sulfonate -, PF6- or B(C6H5)4-) are discussed, was obtained in optically active form.The catalytic activities of these complexes were evaluated through the hydrogenation in 2-acetamidoacrylic acid (AAA) and α-acetamidocinnamic acid (ACA).They are so active that in their presence hydrogenation takes place at ambient temperatures and pressures.Hydrogenations by the use of the (+)589-forms gave optically active N-acetyl-(R)-alanine and N-acetyl-(R)-phenylalanine.
- Uehara, Akira,Bailar, John C.
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