trans-N,N,N',N'-Tetra-kis(carboxy-meth-yl)cyclo-hexane-1,2-diammonium tetra-chloridocadmium(II) tetra-hydrate

In the title compound, (C(14)H(24)N(2)O(8))[CdCl(4)]·4H(2)O, the Cd atom in the tetra-hedral [CdCl(4)](2-) anion lies on a twofold rotation axis, and the diprotonated organic mol-ecule, trans-N,N,N',N'-tetra-kis(carb-oxy-meth-yl)cyclo-hexane-1,2-diammon-ium, has 2 symmetry with the twofold rotation axis running through the mid-point of two C-C bonds in the cyclo-hexane unit. In the crystal structure, classical intra-molecular O-H⋯O and N-H⋯O and inter-molecular O-H⋯O, N-H⋯O, O-H⋯Cl and C-H⋯Cl hydrogen bonds are observed.