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Lookup NU author(s): Professor William Clegg, Dr Ross Harrington
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Six new layered lanthanide molybdate and tungstate phases pillared by either naphthalenedisulfonate (NDS) or fumarate anions have been synthesized hydrothermally and structurally characterized. Five of these materials, [Nd(H2O)MoO4](2)[2,6-NDS] (1), [Nd(H2O)MoO4](2)[1,5-NDS] (2), [La(H2O)WO4](2)[1,5-NDS] (3), [La(H2O)WO4](2)[2,6-NDS] (4), and [Ce(H2O)MoO4](2)[fumarate] (6), have a closely related cationic inorganic layer structure which comprises a bilayer of polyhedra leading to the formation of a framework layer containing small, inaccessible pores. These layers are pillared by the organic anions which also bridge between the lanthanide cations within the layers. In the La/WO4/2,6-NDS system, a second polymorph, [La-2(H2O)(2)W2O8][2,6-NDS] (5), is observed. In this compound, the tungstate anions have dimerized, forming W2O84-. This dimer is unique and comprises two square-based pyramidal tungsten centers which are opposed to each other.
Author(s): Nicholls JL, Hulse SE, Callear SK, Tizzard GJ, Stephenson RA, Hursthouse MB, Clegg W, Harrington RW, Fogg AM
Publication type: Article
Publication status: Published
Journal: Inorganic Chemistry
Year: 2010
Volume: 49
Issue: 18
Pages: 8545-8551
Print publication date: 01/09/2010
ISSN (print): 0020-1669
ISSN (electronic): 1520-510X
Publisher: American Chemical Society
URL: http://dx.doi.org/10.1021/ic101145p
DOI: 10.1021/ic101145p
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