Berberine formate-succinic acid (1/1)

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Authors	MAREK Jaromír HULOVÁ Dagmar DOSTÁL Jiří MAREK Radek
Year of publication	2003
Type	Article in Periodical
Magazine / Source	Acta Crystallographica Section C: Crystal Structure
MU Faculty or unit	Faculty of Informatics
Citation
Field	Organic chemistry
Keywords	berberine; non-conventional hydrogen bonds
Description	The title compound [systematic name: 9,10-dimethoxy-2,3-methylenedioxy-5,6-dihydrodibenzo[a,g]quinolizinium formate-succinic acid (1/1)], C20H18NO4+.CHO2-.C4H6O4, contains centrosymmetric pairs of almost planar berberine cations, and hydrogen-bonded (C4H6O4HCOO-)2 rings of succinic acid with formate anions, bonded by O-HO hydrogen bonds with OO distances of 2.4886 (15) and 2.5652 (16) A. Pairs of cations and molecules of succinic acid are connected by non-conventional weak C-HO hydrogen bonds, with CO distances of 3.082 (2) and 3.178 (2) A.
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