Poly[[diaqua[μ5-(R,S)-2-({2-[(1,2-dicarboxylatoethyl)amino]ethyl}amino)butanedioato]cobaltate(III)sodium] dihydrate]

Abstract

In the asymmetric unit of the title coordination polymer, {[CoNa(C10H12N2O8)(H2O)2]·2H2O}n, the CoII ion is coordinated in a distorted octahedral environment, defined by two N atoms and four carboxylate O atoms. Two CoII ions and two 2-({2-[(1,2-dicarboxylatoethyl)amino]ethyl}amino)butanedioate (EDDS) ligands form a dimeric complex dianion [Co2(EDDS)2]. These dimeric units are connected via Na+ ions, forming a three-dimensional polymeric structure. In the crystal, the ligand N—H groups and the coordinated and solvent water molecules are involved in intermolecular N—H...O and O—H...O hydrogen bonding, reinforcing the three-dimensional polymeric structure.