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

Abstract

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.

The entropies of polyatomic gaseous ions

“…46 No previous value of S°(g) for this cation has been published. 25. Dioxouranium(VI) (Uranyl), U022+.…”

“…The distance in a solid mercury(I) complex and the corresponding vibration frequency may differ. 25 If the latter values are taken, S;°(g) is lowered by 2.0 J K"1 mol"1. No value of S;0(g) has previously been published.…”

Preparation and Comprehensive Characterization of [Hg6(Alanine)4(NO3)4]·H2O

“…Raman and IR data, presented in the Supporting Information, were collected on a Bruker RFS 100 FT-Raman Spectrometer (Nd:YAG laser, emission wavelength 1.06 µm, output power 80 mW) and a Bruker Vector 22 spectrometer (He:Ne laser, emission wavelength 633 nm, output power 1 mW), respectively. Peak assignments are based on those proposed for methylmercury- l -alanine as well as other mercury−amino acid compounds, ,,, and the mercury−mercury peak assignment was based upon a mercury(I) solvation study …”