title: 4-(Dimethyl-amino)-pyridinium trans-diaqua-bis-[oxalato(2-)-κO,O]chromate(III).
abstract: In the title salt, (C(7)H(11)N(2))[Cr(C(2)O(4))(2)(H(2)O)(2)], the asymmetric unit contains one half-cation and one half-anion. The Cr atom, the C and N atoms involved in C- N(exocyclic) bonding and the N and H atoms of N-H groups lie on twofold rotation axis. The Cr(III) atom of the complex anion is six-coordinated in a distorted (4 + 2) octa-hedral geometry with four equatorial O atoms of two nearly coplanar oxalate and two quasi-axial aqua O atoms. In the crystal, the protonated N atoms of the pyridine rings are hydrogen bonded to the carbonyl O atoms of the anions, forming chains along [010]. These chains are connected by lateral O-H⋯O hydrogen bonds, stabilizing the structure.
authors: Justin
authors: J
authors: Nenwa
authors: Michel M
authors: MM
authors: Belombe
authors: Jean
authors: J
authors: Ngoune
authors: Boniface P T
authors: BP
authors: Fokwa
references: Acta Crystallogr A. 2008 Jan;64(Pt 1):112-22
references: 18156677