Y. Kubozono, Akiko Hirano, S. Nagasawa
Aug 1, 1993
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0
Influential Citations
5
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Journal
Bulletin of the Chemical Society of Japan
Abstract
Crystals of sodium hydrogen L-tartrate monohydrate (NaHC4H4O6·H2O) were grown from the aqueous solution, while potassium hydrogen L-tartrate (KHC4H4O6) crystallized as anhydrate. Their crystal structures were determined by X-ray diffraction method. The hydrogen bonds between the carboxyl and carboxylate groups in these crystals are rather long; O···O 2.533(3) and 2.531(1) A for the sodium and potassium compounds, respectively. The sodium and potassium ions are coordinated by eight O atoms at the corners of distorted square antiprism, Na+···O 2.404(2)—2.826(3) A and K+···O 2.718(1)—3.059(1) A. The crystal and molecular structures have been compared with those of the corresponding rubidium, caesium, and ammonium salts, and discussed with the aid of semiempirical and ab initio MO methods.