Research Article: trans-Diaqua­bis­(1H imidazolium-4,5-di­carboxyl­ato-κ2O4,O5)magnesium

Date Published: May 01, 2012

Publisher: International Union of Crystallography

Author(s): Katarzyna Łuczyńska-Szymczak, Wojciech Starosta, Janusz Leciejewicz.


The title compound, [Mg(C5H3N2O4)2(H2O)2], consists of centrosymmetric neutral monomers in which two O,O′-bidentate imidazolinium-4,5-dicarboxyl­ate ligands are bonded to the MgII ion. One of the carboxyl protons is transferred to the N atom of the imidazole ring. The octa­hedral metal-ion coordination is completed by two trans water O atoms. In the crystal, mol­ecules are linked by N—H⋯(O,O) and O—H⋯O hydrogen bonds.

Partial Text

For the crystal structures of two CaII complexes with imidazole-4,5-dicarboxyl­ate and aqua ligands, see: Starosta et al. (2006 ▶) and for the structure of a BaII complex, see: Starosta et al. (2007 ▶).