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Acta Cryst. (2013). C69, 1192-1195  [ doi:10.1107/S010827011302430X ]

Three-dimensional hydrogen-bonded structures in the hydrated proton-transfer salts of isonipecotamide with the di­carb­oxy­lic oxalic and adipic acid homologues

G. Smith and U. D. Wermuth

Synopsis: The structures of the 1:1 hydrated proton-transfer compounds of isonipecotamide (piperidine-4-carboxamide) with oxalic acid and adipic acid are three-dimensional hydrogen-bonded constructs involving several different types of enlarged water-bridged cyclic associations.

Formula: C6H13N2O+·C2HO4-·2H2O and 2C6H13N2O+·C6H8O4-·2H2O

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