New Type of Heterometallic 3d–4f Rhomblike Core in Weakley-Like Polyoxometalates

The first heterometallic copper–cerium polyoxometalate, [{CeIV(OAc)}CuII 3(H2O)(B-α-GeW9O34)2]11– (1), is composed of an unprecedented copper(II)-trisubstituted Weakley-type tungstogermanate subunit stabilized by coordination of a {Ce(OAc)}3+ group at the vacant position. The title species contains...

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Bibliographic Details
Published in:Inorganic chemistry 2011-10, Vol.50 (19), p.9587-9593
Main Authors: Reinoso, Santiago, Galán-Mascarós, José Ramón, Lezama, Luis
Format: Article
Language:English
Subjects:
Cerium - chemistry
Coordination Complexes - chemical synthesis
Coordination Complexes - chemistry
Copper - chemistry
Crystallography, X-Ray
Electron Spin Resonance Spectroscopy
Magnetics
Models, Molecular
Spectroscopy, Fourier Transform Infrared
Tungsten Compounds - chemical synthesis
Tungsten Compounds - chemistry
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Summary:The first heterometallic copper–cerium polyoxometalate, [{CeIV(OAc)}CuII 3(H2O)(B-α-GeW9O34)2]11– (1), is composed of an unprecedented copper(II)-trisubstituted Weakley-type tungstogermanate subunit stabilized by coordination of a {Ce(OAc)}3+ group at the vacant position. The title species contains a central {CeIVCuII 3O18} rhomblike cluster that belongs to a new {(4fext)(3dext)(3dint)2} type and magnetically behaves as a triangular Cu3 system with overall antiferromagnetic exchange affected by the structural distortions the vicinity of diamagnetic CeIV induces.
ISSN:0020-1669
1520-510X
DOI:10.1021/ic201331d