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Acta Crystallogr Sect E Struct Rep Online. 2012 Feb 1;68(Pt 2):o416. doi: 10.1107/S1600536812000852. Epub 2012 Jan 14.

Creatinium hydrogen oxalate.


The crystal structure of the title compound, C(4)H(10)N(3)O(2) (+)·C(2)HO(4) (-), is stabilized by N-H⋯O and O-H⋯O hydrogen bonds. The anions are connected by an O-H⋯O hydrogen bond, leading to C(5) chain extending along c axis. The cations are dimerized around the corners of the unit cell, leading to an R(2) (2)(14) ring motif. This leads to a cationic mol-ecular aggregation at x = 0 or 1 and an anionic mol-ecular aggregation at x = 1/2.

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