title: Berberine formate-succinic acid (1/1).
abstract: The title compound [systematic name: 9,10-dimethoxy-2,3-methylenedioxy-5,6-dihydrodibenzo[a,g]quinolizinium formate-succinic acid (1/1)], C(20)H(18)NO(4)(+).CHO(2)(-).C(4)H(6)O(4), contains centrosymmetric pairs of almost planar berberine cations, and hydrogen-bonded (C(4)H(6)O(4).HCOO(-))(2) rings of succinic acid with formate anions, bonded by O-H...O hydrogen bonds with O...O 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-H.O hydrogen bonds, with C...O distances of 3.082 (2) and 3.178 (2) A.
authors.affiliation: Laboratory of Functional Genomics and Proteomics, Faculty of Science, Masaryk University, Kotlárská 2, CZ-611 37 Brno, Czech Republic. marek@chemi.muni.cz
authors.forename: Jaromír
authors.initials: J
authors.lastname: Marek
authors.forename: Dagmar
authors.initials: D
authors.lastname: Hulová
authors.forename: Jirí
authors.initials: J
authors.lastname: Dostál
authors.forename: Radek
authors.initials: R
authors.lastname: Marek
mesh_terms: D001599:Berberine / Q000737:chemistry*; D002412:Cations / Q000737:chemistry; D018360:Crystallography, X-Ray; D005561:Formates / Q000737:chemistry*; D006860:Hydrogen Bonding; D015394:Molecular Structure; D013386:Succinates / Q000737:chemistry*
chemical_list: D002412:Cations; D005561:Formates; D013386:Succinates; D001599:Berberine