The Layered Methylammonium Molybdate (NH₃CH₃)₂[Mo₇O₂₂] from X-ray Powder Data

Hydrothermally prepared bis(methylammonium) heptamolybdate(VI) crystallizes in the monoclinic system (space group C2/c). Its structure was solved from conventional X-ray powder diffraction using the initial model of the molybdenum oxide layer from the known Tl₂Mo₇O₂₂. Molybdenum coordination polyhedra are significantly distorted octahedra which form layers parallel to the bc plane. The methylammonium cations are incorporated between the layers.

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