SULFUR IN KEGGIN HETEROPOLYANIONS - SYNTHESES AND MULTINUCLEAR NMR CHARACTERIZATIONS (P-31, W-183 AND MO-95) OF GAMMA-[PW(10)M(2)S(2)O(38)](5-) (M=MO, W)
E. Cadot et al., SULFUR IN KEGGIN HETEROPOLYANIONS - SYNTHESES AND MULTINUCLEAR NMR CHARACTERIZATIONS (P-31, W-183 AND MO-95) OF GAMMA-[PW(10)M(2)S(2)O(38)](5-) (M=MO, W), Inorganica Chimica Acta, 252(1-2), 1996, pp. 101-106
The oxothiopolyanions gamma-[PW(10)M(2)S(2)O(38)](5-), M = Mo (1), W (
2), were obtained in good yield through the stereospecific addition of
the dithiocation [M(2)S(2)O(2)](2+) (M = Mo, W) to the divacant gamma
- [PW10O36](7-) anion in dmf W-183 and P-31 NMR spectra of highly solu
ble Li+ salts in aqueous solution confirmed that the structures of bot
h 1 and 2 agree with a Keggin type capped with the {M(2)S(2)O(2)(2+)}
fragment. Polarographic and UV-Vis data are also given.