Aqueous solutions of
'mercurous nitrate' are shown by Raman spectra to contain the complexes [Hg2(OH2)NO3]+
and [Hg2(OH2)2]2+. Crystalline
dimercury(I) nitrate, Hg2(NO3)2,2H2O,
and its solid hydrolysis products Hg2(OH)2,3Hg2(NO3)2,
2Hg2(OH)2,3Hg2(NO3)2,H2O
and Hg2(OH)2,- Hg2(NO3)2
have been obtained: the vibrational spectra are reported and interpreted in
terms of possible structures. Modes v(Hg-Hg) appear in the range 170- 200 cm-1
and are sensitive to the particular combination of the ligands OH, ONO2,
and H2O attached to the dimercury(I) ion.
A series of molecular
adducts, L-ICl, where L = pyridine or a pyridine
derivative, have been prepared and the solid state spectra examined by Raman
and far-infrared spectroscopy. Assignments of the modes v(I-Cl)
240-300 cm-1 and v(N-I) 90-180 cm-1 and force constant
calculations on a simple three-centre model yield information on structure and
bonding related to the nature of the pyridine donor. Several ionic products
containing the Icl2- ion have been encountered.
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.
Ionic compounds R+SnPh3-,
where R = Me4N, (Ph3P)2N, Na(15-crown-5) or
K(18-crown-6), are prepared from alkali metal derivatives, Ph3SnM,
by reactions in liquid ammonia which yield the products as yellow crystalline
solids, soluble in a weakly basic solvent. N.m.r. and vibrational spectra of
the Ph3Sn- anion, a pyramidal species with C3V
symmetry, and the cationic complexes [M(crown)]+, are reported and
assigned.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.