Vibrational spectra of complexes of mercury(I) and mercury(II) with pyridine and other nitrogen bases

Raman and i.r. spectra of the series of compounds MeHg(pyx)ClO4, Hg(pyx)n(ClO4)2 and Hg2- (pyx)n(ClO4)2 (pyx = pyridine or a pyridine derivative; n = 2 or in some cases 4) are reported. In the low- frequency region, the spectra of the complex cations provide the basis of assignments of Hg-N (160-260 cm-1) and Hg-Hg (110-160 cm-1) stretching frequencies.