Un Monophosphate Synthétique de Sodium et de Cobalt: Na₄Co₇(PO₄)₆

Tetrasodium heptacobalt hexaphosphate, a new monophosphate prepared by hydrothermal methods, comprises CoO₆ and CoO₄ coordination polyhedra connected to each other by corner and edge sharing to form zigzag layers parallel to the ab plane. These layers are interconnected by Co - O polyhedra and P - O tetrahedra via corner sharing to form a three-dimensional network. The Na⁺ ions are located in the tunnels running parallel to the a axis. This compound is isostructural with Na₄Ni₇(PO₄)₆.

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