189372-78-9Relevant academic research and scientific papers
A convenient route to vinylsiloxane-tertiary phosphine-nickel(0) complexes; The molecular structure of [(Ni{P(C6H4Me-4)3}) 2{μ-(L′′L′′)2}] {(L′′L′′)2=[CH 2=CH(Me)Si(μ-O)]4}
Hitchcock, Peter B.,Lappert, Michael F.,Maciejewski, Hieronim
, p. 221 - 225 (2007/10/03)
A simple one pot synthesis in Et2O at ambient temperature, from the readily available starting materials [Ni(cod)2], PR3 and LL or (L′′L′′)2, provides an essentially quantitative route to the known vinylsiloxanenickel(0) complexes [Ni(LL)PR3] and the new binuclear analogues [{Ni(PR3)}2{μ-(L′′L′′) 2}] (5) {LL=[CH2=CH(Me)2Si]2O, (L′′L′′)2=[CH 2=CH(Me)Si(μ-O)]4 and R=Ph, C6H4Me-4 or C6H11-c}. The X-ray crystal structure of 5b (R=C6H4Me-4) shows it to be a centrosymmetric binuclear complex containing (L′′L′′)2 as a chair-shaped bridging ligand. It is bound to each Ni(PR3) moiety by a pair of μ2-vinyl groups (having M and M′ as centroids) and each NiMSiOSi′M′ metallacycle is also of chair conformation.
The synthesis and characterisation of some divinyldisiloxane-(tertiary phosphine) complexes of platinum(0) and nickel(0)
Hitchcock, Peter B.,Lappert, Michael F.,MacBeath, Calum,Scott, Fiona P.E.,Warhurst, Nicholas J.W.
, p. 185 - 190 (2007/10/03)
Reaction of the platinum(0) complex [{Pt(LL)}2(μ-LL)] [LL = (ViMe2Si)2O] with PR3 (R = C6H4Me-p or C6H11-c) or PPh2CH2CBut2OH yields, by displacement of the bridging vinylsiloxane ligand, complexes having both a phosphine and a vinylsiloxane as co-ligands. There is evidence for interaction between the platinum atom and the OH moiety in [Pt(LL)(PPh2CH2CBut2OH)]. Reaction of the analogous nickel(0) complex [{Ni(LL)}2(μ-LL)] with a tertiary phosphine yields [Ni(LL)PR3] (R = Ph, C6H11-c or C6H4Me-p). The zinc reduction of [Ni(PPh3)2Cl2] in the presence of (ViPh2Si)2O (PLL) yields the complex [Ni(PLL)PPh3]. X-ray molecular structures of the crystalline complexes [Pt(LL)P(C6H4Me-p)3], [Pt(LL)(PPh2CH2CBut2OH)], [Ni(LL){P(C6H11-c)3}] and [Ni(PLL)(PPh3)] show a trigonal planar metal environment and chair conformation for the M(LL) and M(PLL) units.
