Diaquabis(5-carboxy-2-propyl-1H-imidazole-4-carboxylato-κ2N3,O4)cadmium(II) 3.5-hydrate

• Main Authors: Shi-Jie Li, Jing-Jing Dong, Wen-Dong Song, Jian-Bin Yan, Shi-Hong Li
• Format: Article
• Language: English
• Published: International Union of Crystallography 2010-09-01
• Series: Acta Crystallographica Section E
• Online Access: http://scripts.iucr.org/cgi-bin/paper?S1600536810031466

In the title complex, [Cd(C8H9N2O4)2(H2O)2]·3.5H2O, the CdII is coordinated by two water molecules and N,O-chelated by two 5-carboxy-2-propyl-1H-imidazole-4-carboxylate anions in a distorted octahedral geometry. The two imidazole rings are oriented to each other with a dihedral angle of 75.1 (2)°. Strong O—H...O hydrogen bonds between protonated and deprotonated carboxylate groups occur in the molecular structure. In the crystal structure extensive O—H...O and N—H...O hydrogen bonds help to stabilize the three-dimensional supramolecular framework. The propyl groups of anions are disordered over two sites with refined occupancies of 0.768 (6):0.232 (6) and 0.642 (8):0.358 (8).