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DOI: 10.1039/A804568B (Paper) Reference Section for: J. Mater. Chem., 1998, 8, 2277-2280

MoV–MoVIcationic ordering in the layered molybdate (C2H10N2)[Mo4O12]

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Nathalie Guillou, Gérard Férey and M. Stanley Whittingham

Abstract

The mixed valence MoV–MoVI layered tetramolybdate (C2H10N2)[Mo4O12 ] has been hydrothermally synthesized (180 °C, 3 weeks, autogenous pressure). It crystallizes in the monoclinic system (space group C2) with a=11.4090(2),b=11.8227(2), c=10.2305(1) Å, β=117.549(1)° and Z=4 at 20 °C. The structure was solved from single crystal X-ray diffraction data. Full matrix anisotropic least-squares techniques led to a conventional R1(Fo) factor of 0.044 [wR2(Fo2)=0.107] for 2885 reflections [I>2sigma;(I)]. Its structure consists of [Mo4O12 ]2– layers perpendicular to the c* axis, made up of an ordered organization of isolated tetrameric MoV clusters linked by edges to tetrameric MoVI ones. Ethylenediamine cations are located between the inorganic layers and ensure the connectivity of the structure via hydrogen bonds.

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