Collect. Czech. Chem. Commun. 1979, 44, 3350-3356

Determination of the crystal structure of cobalt(II) orthosilicate

Bohumil Kratochvíla, Jana Podlahováa and Jindřich Hašekb

a Department of Inorganic Chemistry, Charles University, 128 40 Prague 2
b Institute of Macromolecular Chemistry, Czechoslovak Academy of Sciences, 162 06 Prague 6


The crystal structure of Co2SiO4 (olivine structure type) was solved by Patterson and Fourier synthesis and refined by the full matrix least squares method. A final value of the R factor of 0.057 was obtained from 911 independent reflection intensities. The structure symmetry corresponds to space group Pnma with lattice parameters a = 1032.8(3), b = 601.9(2) and c = 478.2(1) pm. The unit cell contains four formula units. The Si-O distance in isolated SiO4 tetrahedra varies from 162.1(3) to 165.9(3) pm. Both cobalt atoms are octahedrally surrounded by oxygen atoms with Co-O distances of 208.0(3)-223.1(2) pm.