The early data of Griffith [J. Chem. Phys, (1943), pp. 499-505] and of
Kolesnikov & Baumer [Vestn. Khar'k. Univ. Ser. Khim. (1975), 127, 38-
41] on the structure of silver oxalate, 2Ag(+).C2O42-, are revised and
refined. In the structure, the oxalate anions form a framework with c
hannels extended along [100] and Ag+ cations are located in these chan
nels, forming dimers with an Ag-Ag bond distance of 2.945 (1)Angstrom
(close to that in metallic Ag). A noticeable elongation of C-C bond is
observed.