Crystal structure of ammonium bis(pyridine-2,6-dicarboxylato-κ3O,N,O′)chromate(III) from synchrotron data

Acta Crystallographica Section E: Crystallographic Communications

卷:71

Jong-Ha Choi¹  Dohyun Moon² 

[1] Department of Chemistry, Andong National University, Andong 760-749, Republic of Korea;

[2] Pohang Accelerator Laboratory, POSTECH, Pohang 790-784, Republic of Korea;

关键词: Crystal structure;    synchrotron radiation;    pyridine-2,6-dicarboxylate;    ammonium cation;    chromate(III) complex;    meridional configuration;    hydrogen bonding;   

DOI  :  10.1107/S2056989015001152

来源: DOAJ

【 摘 要 】

The structure of the title compound, (NH4)[Cr(pydc)2] (pydc is pyridine-2,6-dicarboxylate, C7H3NO4), has been determined from synchrotron data. The CrIII ion and the N atom of the ammonium cation are located on a crystallographic fourfold rotoinversion axis (-4). The CrIII cation is coordinated by four O atoms and the two N atoms of two meridional pydc ligands, displaying a distorted octahedral geometry. The Cr—N and Cr—O bond lengths are 1.9727 (15) and 1.9889 (9) Å, respectively. The crystal structure is stabilized by intermolecular hydrogen bonds involving the N–H groups of the ammonium cation and pyridine C–H groups as donors and the non-coordinating carbonyl O atoms as acceptors.

【 授权许可】

Unknown