Aryl-nickel and acetylene-nickel(I) complexes
Identifiers
Permanent link (URI): http://hdl.handle.net/10017/4792DOI: 10.1016/0022-328X(85)80294-1
ISSN: 0022-328X
Publisher
Elsevier
Date
1985Bibliographic citation
Journal of Organometallic Chemistry, 1985, v. 293, p. 249-256
Keywords
Aryl-nickel
Acetylene-nickel(I)
Project
Ref. 2001-83 (Comisión Asesora de Investigación Científica y Técnica)
Document type
info:eu-repo/semantics/article
Version
info:eu-repo/semantics/publishedVersion
Publisher's version
http://dx.doi.org/10.1016/0022-328X(85)80294-1Rights
(c) Elsevier, 1985
Access rights
info:eu-repo/semantics/openAccess
Abstract
Reduction of various pentafluorophenylnickel(II) complexes in the presence of phosphines gives unstable nickel(I) compounds but Ni(C6F5)(CO)2(PPh3)2 is isolated in the presence of CO. Similar NiR(CO)2(PPh3)2 (R = C6F5,C6Cl5, 2,3,5,6-C6Cl4H) are obtained by reaction of the halogenonickel(I) complex with MgRBr or LiR. Reduction of NiX2L2 in the presence of acetylenes gives [NiXL2]2(μ-PhCCR) (R = H, X = Cl and R = Ph, X = Cl, Br) when L = P-n-Bu3 but only NiX(PPh3)3 are recovered when L = PPh3. No reaction with the alkyne is observed for [NiX(PPh3)2]n but [NiCl(PPh3)]n reacts with RCCR′ to give paramagnetic NiCl(PPh3)(CRCR′) (R = Ph, R′= H, COOEt), diamagnetic [NiCl(PPh3)]2(μ-PhCCPh) and cyclotrimerization when R = R′ = COOMe. Chemical and structural behaviour of the new nickel(I) complexes is described.
Collections
- QUIMINOR - Artículos [235]