Octahedral Tilting in MM′X4 Metal-Oxide Organic Layer Structures

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Date
2008-04-29
Authors
Vougo-Zanda, M.
Anokhina, E.V.
Duhovic, S.
Liu, L.
Wang, X.
Oloba-whenu, O.A.
Albright, T.A.
Jacobson, A.J.
Journal Title
Journal ISSN
Volume Title
Publisher
American chemical society
Abstract
Three metal-oxide organic frameworks have been synthesized and characterized: vanadium 1,4-benzenedicarboxylate, V2O2F0.6(OH)1.4(BDC)·0.4H2O (1); indium 1,4-benzenedicarboxylate, In2F2.2(OH)1.8(BDC)·1.6H2O (2); and aluminum 1,4-benzenedicarboxylate Al2F3(OH)(BDC) (3). The three-dimensional structures of 1, 2, and 3 have the same framework topology as the previously reported vanadium (III) 1,4-benzenedicarboxylate, VIII2(OH)2F2(BDC). The frameworks consist of inorganic layers constructed from corner sharing ML6 octahedra (M = V, In, Al and L = OH, F) linked by BDC ligands. The structures are related to a general class of perovskite-related layer structures with composition MM′X4. The layers show characteristic distortions that can be related to tilting of the ML6 octahedra. In particular the structure of 1 consists of O−V distances that strongly alternate along the b axis. The electronic consequences of this distortion then create a tilting of the 1,4-benzenedicarboxylate ligand about the a axis. Crystal data: 1, orthorhombic, space group Pmna, a = 7.101(2) Å, b = 3.8416(11) Å, c = 20.570(6) Å; 2, orthorhombic, space group Cmcm, a = 7.490(4) Å, b = 21.803(1) Å, c = 8.154(4) Å; 3, monoclinic, space group P21/m, a = 10.7569(8) Å, b = 6.7615(3) Å, c = 7.1291(3) Å, β = 76.02(1)°.
Description
Staff publication
Keywords
Research Subject Categories::NATURAL SCIENCES::Chemistry::Physical chemistry , metal-oxide , 1,4-benzenedicarboxylate , distortions , orthorhombic
Citation
Vougo-Zanda, M., [Et...al] (2008). Octahedral Tilting in MM′ X4 Metal-Oxide Organic Layer Structures. Inorganic chemistry, Vol.47(11), 4746-4751pp.