Phosphorus chemistry and the coordination chemist
(1) aand r-metal-phosphorus interactions are discussed using Pt-P bond distances and coupling constants 'J(195Pt,3lP) and lJ(l95Pt,l5N). It is shown that the data lend themselves to more than one interpretation. (2) Some Ni(O), Rh(I), Ir(I), Pd(II) and Pt(II) complexes of Ph2PCH2CN, PhP(CH2CN)2 and P(CH2CN)3 are described and it is shown that "unexpected" behaviour is observea when large numbers of cyanomethyl groups are placed in close proximity. (3) The coordination chemistry of the chelating phosphines 2,ll-bis(diphenylphosphinomethyl)benzo[c]phenanthrene, (XIV), is described and it is shown that distortions of the coordination polyhedron are often accompanied significant distortions of the organic ligand framework.