“…Careful examination of the 1 H NMR spectrum and application of 2D NMR methods has allowed a re-interpretation of the structure of trans-[Co(en) 2 -(OSMe 2 )(N 3 )] 2+ , such that the previously accepted unusual syn-/anti-rearrangement during base catalysed rearrangement has now been recognised as being in fact a ''normal'' rearrangement. 127 Also, an earlier secondary deuterium isotope effect study is extended to include solvolysis reactions of this complex in DMSO and acetonitrile. 128 [Ni(NCO)(L)] 2 is the product of reaction of CO and [Ni(N 3 )(L)] 2 (L = bi(2mercaptophenyl)sulfide) and has been shown by DFT to be formed in three key steps.…”