New type of heterometallic 3d-4f rhomblike core in Weakley-like polyoxometalates |
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Authors: | Reinoso Santiago Galán-Mascarós José Ramón Lezama Luis |
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Institution: | Departamento de Qui?mica Inorga?nica, Facultad de Ciencia y Tecnologi?a, Universidad del Pai?s Vasco (UPV/EHU), P.O. Box 644, 48080 Bilbao, Spain. santiago.reinoso@ehu.es |
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Abstract: | The first heterometallic copper-cerium polyoxometalate, {Ce(IV)(OAc)}Cu(II)(3)(H(2)O)(B-α-GeW(9)O(34))(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 {Ce(IV)Cu(II)(3)O(18)} rhomblike cluster that belongs to a new {(4f(ext))(3d(ext))(3d(int))(2)} type and magnetically behaves as a triangular Cu(3) system with overall antiferromagnetic exchange affected by the structural distortions the vicinity of diamagnetic Ce(IV) induces. |
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