J. Amigo, J. Martínez-Calatayud, A. Cantarero
Aug 15, 1988
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Influential Citations
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Journal
Acta Crystallographica Section C-crystal Structure Communications
Abstract
C4HHNsOaS.½H20, M r = 209.1, monoclinic, C2/c, a = 11.498 (10), b = 18.902 (5), c = 9.329 (12)A, fl= 114.52 (4) ° , V= 1845 (5)A a, Z= 8, D x = 1.505 Mg m -a, F(000) = 880, Mo Ka (2 = 0.71069 A), #(Mo Ka) = 0.287 mm -~, R = 0.0553 for 1150 observed reflections. The structure is charac- terized by linear molecules linked to surrounding molecules by two hydrogen bonds. Introduction. Biguanides (imidodicarbonimidic di- amides) are interesting chemicals and their importance is due to their pharmacological and industrial applica- tions; they are also interesting as analytical reagents owing to their reactivity with metallic ions. Many papers have been published concerning biguanides, mostly dealing with the synthesis and pharmaceutical or industrial properties; however, very few articles have been published about their molecular structure (Brown, 1967; Handa & Saha, 1971; Ernst & Cagle, 1977; Ernst, 1977; Brown & Sengier, 1984; Hota, Saha & Pritzkow, 1984; Amig6, Martinez-Calatayud & Debaerdemaeker, 1985). The general structure of the biguanide group (Slota & Tscheche, 1929; Ray & Saha, 1937) is