The crystal structure of Cs₂S₂O₃·H₂O

Abstract

2− are coordinated by the alkali metal cations, and in addition they serve as acceptors for hydrogen bonding. For both Cs atoms the shortest distances are observed to oxygen atoms of the S 2 O 3 2− anions whereas the terminating sulfur atom has its shortest contacts to the water hydrogen atoms. Thus, an extended hydrogen bonding network is formed. The title compound has also been characterized by IR spectroscopy. IR spectroscopy reveals the vibrational bands of the water molecules at 3385 cm −1 . They show a red shift in the OH stretching and bending modes as compared to free water. This is due both to the S···H hydrogen bonding and to the coordination of H 2 O molecules to the cesium atoms.

Crystal structure of sodium thiosulfate dihydrate and comparison to the pentahydrate

“…with the sheer number of references obviously illustrating the high stability of the latter phase. For other alkali metal thiosulfates, the structures of anhydrous K 2 S 2 O 3(Lehner et al, 2013) and K 2 S 2 O 3 Á1/3H 2 O(Csorda ´s, 1969;Chan et al, 2008;Lehner et al, 2013) as well as of the monohydrates of Rb 2 S 2 O 3(Lehner et al, 2013) and Cs 2 S 2 O 3(Winkler et al, 2016) have been reported.…”