Preparation, crystal and molecular structure of trans-dibromobis-[di(t-butyl)fluorophosphine]nickel(II)

Abstract

The title compound has been prepared by reaction of anhydrous nickel dibromide in benzene suspension with Bu^t₂PF. I.r., u.v., and magnetic measurements are reported. Crystals are monoclinic, space group P2₁/n, with a= 9·358(3). b= 14·530(5), c= 8·468(6)Å, β= 93·69(6)°. Z= 2. The molecule is trans-square planar and is centrosymmetric. The principal bond lengths and angles are: Ni–Br 2·288(1), Ni–P 2·232(3), P–C 1·86(1) and 1·88(1) and P–F 1·579(7)Å; C–P–F 97·3(5) and 97·9(5)°. The structure was solved by Patterson and Fourier methods and refined to R 0·088 for 1243 visually estimated unique reflections.