New type of heterometallic 3d-4f rhomblike core in Weakley-like polyoxometalates

Inorg Chem. 2011 Oct 3;50(19):9587-93. doi: 10.1021/ic201331d. Epub 2011 Aug 25.

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.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • 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*

Substances

  • Coordination Complexes
  • Tungsten Compounds
  • polyoxometalate I
  • Cerium
  • Copper