R. Morassi, A. Del
1972
Citations
0
Influential Citations
6
Citations
Journal
Inorganica Chimica Acta
Abstract
Abstract Nickel(II) halide complexes with the bidentate ligand 1,2-bis(diphenylphosphino)ethane (dpe) have been reinvestigated, with particular regard to their behaviour in solution. Conclusive evidence of the existence of low-spin five co-ordinate [Ni(dpe) 2 X] + species (X = Cl, Br, I), in equilibrium with cis -planar [Ni(dpe)X 2 ] species, is given on the basis of spectrophotometric and conductometric data. Calorimetric measurements suggest that the stability of five-co-ordinate [Ni(dpe) 2− Br] + is comparable to that of the previously reported [Co(dpe) 2 Br] + complex.