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Abstract
The chemical shielding tensor anisotropy of the 31P nucleus in tris(piperidino)phosphine oxide and triphenylphosphine sulfide molecules was determined in solution from 31P and 13C spin-lattice relaxation time measurements. The quadrupolar coupling constant χ of the 17O nucleus of tris(piperidino)phosphine oxide was also deduced from these experiments and 17O NMR spectra. The δ[sgrave] value for triphenylphosphine sulfide is compared to those reported in the literature. The δ[sgrave] and χ parameters for tris(piperidino)phosphine oxide are discussed in terms of the influence of the piperidino substituent on the electronic distribution in the PO bond.