Use of hydrogen selenide for synthesis of binuclear palladium complexes containing bridging selenide, and their conversion into novel dimetallic selenoxides
作者:Gabor Besenyei、Chung-Li Lee、Brian R. James
DOI:10.1039/c39860001750
日期:——
The complexes [Pd2Cl2µ-PPh2CH(R)PPh2}2], where R = H or Me, react with H2Se or elemental Se to yield the bridging-selenide derivatives [Pd2Cl2(µ-Se)µ-PPh2CH(R)PPh2}2]; these, on treatment with ButOOH, yield the corresponding µ-SeO (dimetallicselenoxide) species.
Barnabas, A. Freddy; Sallin, Dominique; James, Brian, R., Canadian Journal of Chemistry, 1989, vol. 67, p. 2009 - 2015
作者:Barnabas, A. Freddy、Sallin, Dominique、James, Brian, R.
DOI:——
日期:——
Synthesis and Characterization of Dinuclear Palladium Complexes with Bridging Selenide or Selenoxide Ligands, Including X-ray Characterization of anti-Pd2Cl2(.mu.-Se)(.mu.-dpmMe)2 [dpmMe = 1,1-Bis(diphenylphosphino)ethane]
作者:Gabor Besenyei、Laszlo Parkanyi、Laszlo I. Simandi、Brian R. James
DOI:10.1021/ic00128a024
日期:1995.11
The complexes Pd2Cl2(P-P)(2), where (P-P) = mu-bis(diphenylphosphino)methane, dpm, or mu-1,1-bis(diphenylphosphino)ethane, dpmMe, react with elemental selenium to give the A-frame adducts Pd2Cl2(mu-Se)(P-P)(2), which can be oxidized by t-BuOOH to the mu-SeO derivatives. Reaction of H2Se with Pd2Cl2(dpm)(2) generates Pd(2)Ch(2-n)-(SeH)(n)(mu-Se)(dpm)(2) species (n = 0-2). anti-Pd2Cl2(mu-Se)(dpmMe)(2) (2d) crystallizes in the monoclinic space group P2(1)/c with a = 11.986(2) Angstrom, b = 24.141(2) Angstrom, c = 18.921(2 Angstrom), beta = 106.64(1)degrees, V = 5243.2(11)' Angstrom(3), and Z = 4; the structure was refined against F-2 to wR2 = 0.1338 (R1 = 0.0476) for 9838 reflections with I > 2 sigma(1). 2d is the first structurally characterized A-frame complex with anti disposition of substituents at the methylene C atoms of the diphosphine Ligands. A correlation between the Se-77 NMR shift measured for Pd2Cl2(mu-Se)(P-P)(2) and the equilibrium constant for the reversible binding of CO by the Pd2Cl2(P-P)(2) species reflects factors affecting binding at the apical site.