Small non-polar complexes exhibiting significant piezoelectric properties: Solvothermal synthesis and crystal structures of MO{sub 5}V(tren){center_dot}H{sub 2}O (M=Mo and W; tren=tris(2-aminoethyl)amine)
- Institut fuer Anorganische Chemie, Christian-Albrechts-Universitaet Kiel, Max-Eyth-Str. 2, D-24118 Kiel (Germany)
- Mineralogisch-Petrographisches Institut, Universitaet Hamburg, Grindelallee 48 20146 Hamburg (Germany)
The two isostructural complexes MO{sub 5}V(tren){center_dot}H{sub 2}O (M=Mo (1) and W (2)) were synthesized under solvothermal conditions at pH Almost-Equal-To 12 crystallizing in the non-centrosymmetric space group P2{sub 1}2{sub 1}2{sub 1}. The structures are constructed by a distorted tetrahedral [MO{sub 4}]{sup 2-} anion bound via one shared oxygen atom to a severely distorted [V{sup IV}N{sub 4}O]{sup 2+} complex completing the octahedral coordination around the V centre. The two O atoms in the VN{sub 4}O{sub 2} octahedron are in cis position. The two compounds represent rare examples where the [MO{sub 4}]{sup 2-} anion is acting as a ligand. Both compounds exhibit a piezoelectric effect which is more pronounced for M=Mo. The samples are further characterized with IR and UV/Vis spectroscopy and thermal analysis. - Graphical abstract: The complexes [(V(tren)O)(MO4)]{center_dot}H2O (M = Mo, W; tren = tris(2-aminoethyl)amine)) composed of vertex-linked [MO4]{sup 2-} tetrahedron and [VN4O6]{sup 2+}octahedron. Highlights: Black-Right-Pointing-Pointer [MO{sub 4}]{sup 2-} tetrahedron (M=Mo, W) acting as ligand. Black-Right-Pointing-Pointer Jahn-Teller and steric distortion of the [VN{sub 4}O{sub 2}]{sup 2+} octahedron. Black-Right-Pointing-Pointer Non-centrosymmetric complexes exhibiting pronounced piezoelectric effect.
- OSTI ID:
- 22149892
- Journal Information:
- Journal of Solid State Chemistry, Vol. 195; Other Information: Copyright (c) 2012 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA); ISSN 0022-4596
- Country of Publication:
- United States
- Language:
- English
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