The Crystal Structure of Silver Oxalate

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Abstract
An x‐ray diffraction study reveals that silver oxalate is monoclinic, having the symmetry of the space group P21/c—C2h5. The unit cell has the following dimensions: a=3.46±0.02A, b=6.16±0.02A, c=9.47±0.04A, β=76°±1°. There are two molecules of Ag2C2O4 per unit cell. All atoms are located in sets of fourfold general positions. The parameters of the silver and oxygen atoms are determined from two‐dimensional Fourier syntheses, using the experimental crystal structure factors for the h0l and 0kl planes. The positions of the carbon atoms are approximately determined by requiring that the carbon‐carbon and carbon‐oxygen bond distances be reasonable. The silver oxalate structure may be considered to be made up of chain molecules of composition (Ag2C2O4)x extending through the lattice parallel to the b axis. These chains appear to be held together by longer silver‐oxygen bonds to form the three‐dimensional structure.

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