Bis(2,5-dihydroxy-benzoato-κO)bis-(1,10-phenathroline-κN,N')cadmium(II) 1.25-hydrate.

In the crystal structure of the title compound, [Cd(C(7)H(5)O(4))(2)(C(12)H(8)N(2))(2)]·1.25H(2)O, the Cd(2+) cation is coordinated by two phenanthroline (phen) mol-ecules and two 2,5-dihydroxy-benzoate (dhba) anions in a distorted octa-hedral geometry. The centroid-centroid distances of 3.809 (2) and 3.680 (2) Å between nearly parallel pyridine rings of the phen ligands and the benzene rings of dhba anions indicate that the dhba anions are involved in π-π stacking in the crystal structure. The face-to-face separation of 3.35 (3) Å between parallel phen ring systems also suggests π-π stacking between adjacent complex mol-ecules. The crystal structure contains extensive O-H⋯O and C-H⋯O hydrogen bonding.