Untersuchungen der kernmagnetischen Resonanz von Phosphorverbindungen. XXXI. Spin-Spin-Kopplungskonstanten in Phosphin- und Phosphit-Komplexen von Quecksilber (II), Cadmium und Zinn

NMR Studies of Phosphorus Compounds. XXXI. Spin-Spin Coupling Constants in Phosphine and Phosphite Complexes of Mercury(II), Cadmium, and Tin The ¹⁹⁹Hg? ³¹P spin spin coupling constants and the chemical shifts δ_P for 20 mercury(II) complexes with triorganyl phosphines and phosphites as ligands are reported. The effect of the ligand electronegativity on coupling constant and chemical shift is more clearly evident than in the corresponding platinum(II)-complexes. Furthermore corresponding data for some cadmium and tin complexes are tabulated.