Synthesis, spectroscopic characterization, and crystal structure of the bimetallic complex [Ni-2(mu-CO)(CO)(2)(mu-NH(PPh2)(2))(2)]

Simon-Manso, E; Valderrama M.; Arancibia, V; Simon-Manso, Y; BOYS, D

Abstract

The dinuclear Ni(0) complex [Ni-2(mu-CO)(CO)(2)(mu-dppa)(2)] (1; dppa = bis(diphenylphosphino)amine) was synthesized by two routes in good yield. Complex 1 has a triclinic crystal system and P (1) over bar space group, with a = 13.009(1) Angstrom, b = 13.063(2) Angstrom, c = 14.664(2) Angstrom, alpha = 79.96(1)degrees, beta = 79.96(1)degrees, gamma = 71.32(1)degrees, and Z = 2. The structure of this compound exhibits two mu-coordinated dppa ligands in a cis,cis arrangement. Nickel atoms are at a 2.5824(7) A distance. Theoretical calculations predict a 0.39 bond order between metal atoms. The cyclic voltammograms show two quasi-reversible redox pairs, which correspond to the successive oxidation of the metal centers. The dinuclear complex described absorbs carbon monoxide, yielding a mixture of nickel carbonyl compounds.

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Título según WOS: Synthesis, spectroscopic characterization, and crystal structure of the bimetallic complex [Ni-2(mu-CO)(CO)(2)(mu-NH(PPh2)(2))(2)]
Título según SCOPUS: Synthesis, spectroscopic characterization, and crystal structure of the bimetallic complex [Ni2(?-CO)(CO)2(?-NH(PPh2)2)2]
Título de la Revista: INORGANIC CHEMISTRY
Volumen: 39
Número: 8
Editorial: American Chemical Society
Fecha de publicación: 2000
Página de inicio: 1650
Página final: 1654
Idioma: English
URL: http://pubs.acs.org/doi/abs/10.1021/ic990773s
DOI:

10.1021/ic990773s

Notas: ISI, SCOPUS