Abstract
The nickel(0) complex [Ni(dppb)2]·2.5C6H6 [dppb = Ph2P(CH2)4PPh2 or C28H28P2] was obtained from reaction of the boronic ester nickel(II) complex [NiBr{C6H4B(O2C2Me4)}(dppb)] with KOtBu. The nickel metal centre is in a tetrahedral environment characteristic of NiP4 species. Each asymmetric unit contains 2.5 disordered molecules of benzene and satisfactory refinement was achieved after removal of the solvent void contribution from the data. A mixed anisotropic/isotropic model was used for the non-H-atom sites.
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