NMR-Untersuchungen an Organoelement(IV b)-phosphinen,IV Phosphor-Zinn-Kopplungskonstanten von Trimethylstannylphosphinen und ihren Übergangsmetallcarbonylkomplexen / NMR-studies on Organoelement(IVb)-phosphines, IV Phosphorus-Tin Coupling Constants of Trimethyltin Phosphines and their Transition Metal Carbonyl Complexes

Abstract

Nuclear spin-spin coupling constants ¹J (³¹P-¹¹⁷Sn) and ¹J (³¹P-¹¹⁹Sn) are reported for trimethylstannyl phosphines of the type [(CH₃)₃Sn]₃__nPR_n (R = H, ^tC₄H₉, C₆H₅, Si(CH₃)₃, Ge(CH₃)₃; n = 0, 1, 2, 3) and for some transition metal carbonyl complexes having these phosphines as ligands. It is possible to calculate the value of¹J (P-Sn) by the empirical method of increments, if there is a large number of similar compounds.