1 H, 31P and 13C N.m.r. spectra have been obtained for a number of bis(phosphinoyl)amines (I) and bis(phosphinothioyl)amines (II). The spectra have been analysed to give chemical shifts and coupling constants, which are presented and discussed here. The sign of 2JPNP has been determined by heteronuclear spin tickling in several cases and found to be positive.
G. Hägele, R. K. Harris, M. I. M. Wazeer and R. Keat, J. Chem. Soc., Dalton Trans., 1974, 1985 DOI: 10.1039/DT9740001985
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