‘Side-on’ co-ordination of a phenylhydrazido ligand: synthesis and X-ray structure determination of [(η5-C5H5)2W(H2NNPh)][BF4]
Abstract
The low-temperature product, [(η5-C5H5)2WH(NNHR)][X](R = aryl, X = BF4 or PF6), from the reaction of [RN2][X] with (η5-C5H5)2WH2 rearranges in solution above –20 °C to yield [(η5-C5H5)2W(H2NNR)][X] in which the arylhydrazido ligand is bound to W in a ‘side-on’ or dihapto manner.