title: Hexaaqua-cobalt(II) bis-{[N-(4-meth-oxy-2-oxidobenzyl-idene)glycylglycinato]nickel(II)} hexa-hydrate.
abstract: In the title compound, [Co(H(2)O)(6)][Ni(C(12)H(11)N(2)O(5))](2)·6H(2)O, the Ni(II) atom has a nearly square-planar coordination with two N and two O atoms of the N-(4-meth-oxy-2-oxidobenzyl-idene)glycylglycinate Schiff base ligand (L(3-)). The Co(II) atom sits on an inversion center and is coordinated to six aqua ligands in a slightly distorted octa-hedral geometry. The [Co(H(2)O)(6)](2+) cations and [NiL](-) anions form columns along the a axis by O-H⋯O hydrogen bonds. Additional hydrogen bonds between the uncoordinated and coordinated water molecules help to consolidate the crystal packing.
authors.affiliation: College of Chemistry and Chemical Engineering, Yangzhou Universitry, Yangzhou 225002, People's Republic of China.
authors.forename: Jiaxun
authors.initials: J
authors.lastname: Jiang
authors.forename: Yao
authors.initials: Y
authors.lastname: Lu
authors.forename: Limin
authors.initials: L
authors.lastname: Yuan
authors.forename: Wenlong
authors.initials: W
authors.lastname: Liu