No abstract

Inner projections of the polarization propagator (IPPP) are used to study several features of the throughspace transmission of 31P-31P coupling constants. Cis-l,2-diphosphinoethylene is chosen as a model compound. INDO ground state wave functions are used, including two different second-row parameterizations. Results obtained with a phosphorus spd basis set are also presented. It is found that the overlap of phosphorus lone-pairs constitute an efficient coupling pathway. Results are discussed in terms of experimental values for similar compounds taken from the literature. Theoretical predictions are in line with experimental trends.