Determination of P-31,P-31 coupling constants in cyclotriphosphazenes and their influence on H-1 and C-13 NMR spectra of phosphorus substituents

摘要

H-1 and C-13 NMR spectra of symmetrically substituted cyclotriphosphazenes exhibit second-order effects. The influence of the P-31,P-31 coupling constants between ring phosphorus atoms on these effects was studied. Some values of this coupling constant between phosphorus bearing identical substituents were measured using C-13 satellites of the P-31 signals or by introduction of a chiral substituent on the third phosphorus atom. Copyright (C) 2003 John Wiley Sons, Ltd. [References: 36]