Structural characterisation of cationic methylallyl, methylindenyl and pentamethylcyclopentadienyl nickel complexes containing the bulky phosphine 1, 2-bis ( …

…, MC Puerta, I Salcedo, P Valerga

Index: Tenorio, Manuel Jimenez; Puerta, M. Carmen; Salcedo, Isabel; Valegra, Pedro Journal of the Chemical Society, Dalton Transactions, 2001 , p. 653 - 657

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Abstract

A novel high-yield, convenient synthetic method for the complex [Ni (COD) 2] has been developed based upon the use of dibutylmagnesium as reducing agent. The cationic complexes [Ni (η3-CH2C (R) CH2)(dippe)][BPh4](R= Me 1a or H 1b; dippe= Pri2PCH2CH2PPri2) were obtained by reaction of [Ni (COD) 2] with BrCH2C (R) CH2 in diethyl ether, followed by treatment with dippe and NaBPh4 in methanol.[Ni (2-MeInd)( ...