NoteFormation of a metallocycle by dimerization of acrylonitrile. Crystal structure of the hexakis{(1,4-Dicyanobutane (cas 111-69-3)-1,4-diyl)-nickel(II)} complex

Add time:08/22/2019    Source:sciencedirect.com

A novel hexanickel(II) complex [Ni6(NCCHCH2CH2CHCN)6] (2) with 1,4-dicyanobutane-1,4-diyl (L) which was produced by the metal-induced dimerization of acrylonitrile (AN) has been isolated and the structure has been determined crystallographically. Complex 2 is triclinic, space group P1, a = 9.998(2), b = 10.363(2), c = 9.960(3) Å, α = 110.35(2), β = 103.46(2), γ = 88.97(2)° U = 938.7(4) Å3, Z = 1, R = 0.029 and Rw = 0.034. Each nickel atom is coordinated by two carbon atoms of L and two nitrogen atoms of the cyano group of two other L, providing a square-plenar geometry. The six nickel atoms are bridged by the cyano group and carbon atom to form the slightly distorted octahedral Ni6 core.

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