The redox reaction between [VCl2(tmeda)(2)] (tmeda = N,N,N',N'-tetrame
thylenediamine) and benzil yielded the non-oxo V-IV benzoin complex [V
(tmeda){Ph(O)C=C(O)Ph}(2)]. thf (C-2 symmetry), the first structurally
characterised vanadium-endiolate complex.