Tripotassium (bis{[bis(carboxylatomethyl)amino]methyl}phosphinato)cuprate(II) dihydrate

• Main Authors: Liyan Liu, Rui Zhang, Ping Fan, Zhan Yu, Xiangdong Zhang
• Format: Article
• Language: English
• Published: International Union of Crystallography 2012-01-01
• Series: Acta Crystallographica Section E
• Online Access: http://scripts.iucr.org/cgi-bin/paper?S1600536811053608

In the title compound, K3[Cu(C10H12N2O10P)]·2H2O, the CuII ion, one potassium cation and a P atom are situated on a twofold rotation axis. The CuII ion is coordinated by two N and four O atoms from one bis{[bis(carboxylatomethyl)amino]methyl}phosphinate ligand in a distorted octahedral coordination geometry. The two crystallographically independent potassium ions exhibit different coordination environments. The potassium ion in a general position is heptacoordinated by five carboxylate O atoms, one phosphinate O atom and one water molecule [K—O = 2.718 (3)–3.040 (3) Å], and the potassium ion situated on the twofold rotation axis is hexacoordinated by four carboxylate O atoms and two water molecules [K—O = 2.618 (3)–2.771 (3) Å]. The water molecules are also involved in formation of intermolecular O—H...O hydrogen bonds.