Layered Tetramethylammonium Vanadium Oxide [N(CH₃)₄]V₃O₇ by X-ray Rietveld Refinement

Tetramethylammonium trivanadium heptaoxide crystallizes in the monoclinic space group P2₁/n when prepared hydrothermally. Its structure was solved from conventional X-ray powder diffraction with final R(Bragg) = 0.052, R(prof) = 0.078. Vanadium coordination polyhedra are square pyramids and a tetrahedron which form layers parallel to the bc plane. The tetramethylammonium cations are incorporated between the layers.

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