F. Valach, N. N. Hoang, I. Lukeš:
"Structure of Disodium
Chem. Pap. 50, (1996) 115-20
The crystal structure
of Na2[Co(Hida)2]×6H2O (Hida = iminodiacetato)contains discrete units [Co(Hida)2]2-,ions Na+, and H2O mols. The pseudo-octahedral coordination of Co(II)is created by four O atoms (the bond lengths Co-Oare 0.202(1), 0.203(1), 0.207(1),and 0.210(1) nm)and two N atoms of two Hida ligands (bond lengths Co-Nare 0.211(2)and 0.214(2) nm).The cations Na+ are pseudo-octahedrally surrounded by four water O atoms and two carboxyl O atoms from the different units [Co(Hida)2]2-.Crystallog. data and at. coordinates are given.