SYNTHESIS AND P-31 NMR-STUDIES OF TERTIARY ARYLPHOSPHINE COMPLEXES OF MERCURY(II) HALIDES

Several new p-alkyphenylphosphines have been synthesized as well as 12 compounds of the type L2HgX2 and 17 compounds of the type L2Hg2X4 where L is a triarylphosphine and X is Cl, Br, or I. Variable temperature phosphorus-31 NMR spectra are reported. The presence or absence and shape of the mercury-199 satellites in the 31P spectra are a function of the rate of ligand exchange. Qualitatively, the rate of exchange decreases with the increasing basicity of the tertiary phosphine, with decreasing temperature, and with increasing acidity of the mercury species. JHg-P increases with decreasing temperature for all compounds measured. © 1979.