The 13C and lWHg nuclear magnetic resonance spectra of series of 3-@-substituted- pheny1)-2-meth-oxypropylmercuric chlorides and 3-@-substituted-pheny1)-2-methyl-2- methoxypropylmercuric chlorides have been obtained. Variations in spectral parameters with the para substituent, solvent, concentration, and temperature are fully in accord with the conclusion that y-phenylpropylmercuric halides exist (in poorly donor solvents) largely as ...