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• W1997549243 abstract "Five iridium complexes containing bidentate phosphine ligands, IrH(CO)(PPh3)(BPPB) [BPPB=1,2-bis(diphenylphosphino)benzene] (1), IrH(CO)(PPh3)(BISBI) [BISBI=2,2′-bis(diphenylphosphinomethyl)-1,1′-biphenyl] (2), IrH(CO)(PPh3)(BDNA) [BDNA=1,8-bis(diphenylphosphinomethyl)naphthalene] (3), IrH(CO)(PPh3)(BDPX) [BDPX=1,2-bis(diphenylphosphinomethyl)benzene] (4), and IrHCl(CO)(PCP) [PCP-H=1,3-bis(diphenylphosphinomethyl)benzene] (5) were synthesized. Their compositions and structures were identified by elemental analysis, FTIR, 31P{1H} NMR and 1H NMR. The molecular structure of IrH(CO)(PPh3)(BDNA) determined by single crystal X-ray diffraction indicated a trigonal bipyramidal structure with the three phosphorus atoms in the equatorial plane. The crystal belonged to triclinic system, P1 space group, a=11.47 Å, b=11.65 Å, c=19.20 Å, α=81.95°, β=75.60°, γ=70.60°, and Z=2. The catalytic hydrogenation activities and selectivities of the five complexes as catalysts for citral and cinnamaldehyde were investigated. Complexes 1–4 showed high selectivity for the hydrogenation of CO group in citral. High selectivity for the hydrogenation of CO group in cinnamaldehyde catalyzed by complex 4 could be obtained in the presence of excess amount of ligand (BDPX)." @default.
• W1997549243 created "2016-06-24" @default.
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• W1997549243 date "2002-01-01" @default.
• W1997549243 modified "2023-09-27" @default.
• W1997549243 title "Syntheses and characterizations of iridium complexes containing bidentate phosphine ligands and their catalytic hydrogenation reactions to α,β-unsaturated aldehydes" @default.
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• W1997549243 doi "https://doi.org/10.1016/s1381-1169(01)00294-1" @default.
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