beta-CdC2O4.

Crystals of anhydrous cadmium oxalate, beta-[Cd(C(2)O(4))], have been synthesized hydrothermally and the crystal structure solved using single-crystal X-ray diffraction data. The Cd and oxalate ions lie about independent inversion centres. The structure consists of a three-dimensional framework built from sheets of cadmium octahedra linked together by oxalate groups.