Cobalt Silicon Diphosphate, Co₂Si(P₂O₇)₂

The structure of dicobalt(II) silicon bis[diphosphate(4-)], Co₂Si(P₂O₇)₂, consists of compressed CoO₆ octahedra, SiO₄ tetrahedra and P₂O₇ groups with a P-O-P angle of 132.3 (1)°. Co₂O₁₀ units built from two edge-sharing CoO₆ octahedra are linked via four corners to other dimers thus forming a two-dimensional network parallel to the bc plane. These planes are separated by bands formed from diphosphate groups and SiO₄ tetrahedra.

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