S. Pasynkiewicz et al., A new type of tetranuclear cyclopentadienylnickel cluster: synthesis and structural characterisation, J ORGMET CH, 613(1), 2000, pp. 37-41
A novel, 65-electron tetranuclear nickel cluster of the formula Cp3Ni4(CH3C
=CCH3)(3) (6) was isolated and identified as the product of the reaction of
nickelocene with methyllithium in the presence of 2-butyne at the molar ra
tio of reactants 1:1:1. The compound was fully characterised by spectroscop
ic and X-ray measurements. It crystallises from hexane in an orthorhombic c
rystal system and space group Pbcn. Corresponding unit cell parameters were
determined as a=26.438(5), b=11.219(2), c = 16.328(3) Angstrom; alpha = be
ta = gamma = 90 degrees; V = 4843(2) Angstrom (3); Z = 8. (C) 2000 Elsevier
Science S.A. All rights reserved.