Nickel and palladium phosphinimine-imine ligand complexes

被引：51

作者：

Masuda, JD ^{[1
]}

Wei, PR ^{[1
]}

Stephan, DW ^{[1
]}

机构：

[1] Univ Windsor, Dept Chem & Biochem, Windsor, ON N9B 3P4, Canada

来源：

DALTON TRANSACTIONS | 2003年 / 18期

关键词：

D O I：

10.1039/b306110h

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

The imine (C(6)H(3)i-Pr-2)NCMe2 1 was prepared and used to make the phosphine (C(6)H(3)i-Pr-2)NC(Me)CH2PPh2 2. Oxidation with the substituted arylazide resulted in the isolation of the phosphinimine-imine species (C(6)H(3)i-Pr-2)NC(Me)CH2PPh2(NC(6)H(3)i-Pr-2) 3. The ligand 3 forms the neutral Ni-complex NiBr2((C(6)H(3)i-Pr-2)NC(Me)CH2PPh2(NC(6)H(3)i-Pr-2)) 4 while attempts to prepare the analogous Pd species were unsuccessful. Reaction of 3 with n-BuLi produced the Li-salt Li(thf)((C(6)H(3)i-Pr-2)NC(Me)CHPPh2(NC(6)H(3)i-Pr-2)) 5. Subsequent reaction with NiBr2(dme) afforded [Ni((C(6)H(3)i-Pr-2)NC(Me)CHPPh2(NC(6)H(3)i-Pr-2))(mu-Br)(2)Li(thf)(2)] 6. In related syntheses 5 reacted with NiBr2(dme) or (PhCN)(2)PdCl2 and PPh3 to give the complexes of formulation MX((C(6)H(3)i-Pr-2)NC(Me)CHPPh2(NC(6)H(3)i-Pr-2))(PPh3) (X = Br, M = Ni 7; X = Cl, M = Pd 8). The latter complexes 7 and 8 are phosphinimine-N-C bound. Structural studies of 2 and 4-8 are reported. The implications of these studies for the utility of this phosphinimine-imine ligand in olefin polymerization catalysts are considered.

引用

页码：3500 / 3505

页数：6

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