Synthesis and spectroscopic characterization of two new thiosaccharinate salts. Molecular structure of bis(triphenylphosphine)iminium thiosaccharinate, PNP(tsac)

M. DENNEHY; O. V. QUINZANI; S. D. MANDOLESI; J. GUIDA; G. A. ECHEVERRÍA; OSCAR E. PIRO

MONATSHEFTE FUR CHEMIE (VIENNA)

Año: 2006

0026-9247

We report the synthesis, FTIR, Raman and NMR spectroscopic features of bis(triphenylphosphine)iminium and tetrabutylammonium thiosaccharinates, PNP(tsac) and NBu4(tsac) [tsac: thiosaccharinate anion, PNP: bis(triphenylphosphine)iminium]. The molecular structure of the former compound was determined by X-ray diffraction methods. The salt crystallizes in the monoclinic P21/n space group with a=9.6481(9), b=29.258(3), c=13.177(2) Å, b=97.53(1)°, and Z=4 molecules per unit cell. Slight but significant changes in the bonding structure of the thiosaccharinate anion as compared with those reported for the neutral molecule are observed.