Crystal structure and magnetic properties of the S = 1/2 quantum spin system Cu7(TeO3)6F2 with mixed dimensionality.

@article{Hu2014CrystalSA,
  title={Crystal structure and magnetic properties of the S = 1/2 quantum spin system Cu7(TeO3)6F2 with mixed dimensionality.},
  author={Shichao Hu and Amber Mace and Mats Johnsson and Vladimir Gnezdilov and Peter Lemmens and Joshua Tapp and Angela M{\"o}ller},
  journal={Inorganic chemistry},
  year={2014},
  volume={53 14},
  pages={
          7661-7
        }
}
The new oxofluoride Cu7(TeO3)6F2 has been synthesized by hydrothermal synthesis. It crystallizes in the triclinic system, space group P1. The crystal structure constitutes a Cu-O framework with channels extending along [001] where the F(-) ions and the stereochemically active lone-pairs on Te(4+) are located. From magnetic susceptibility, specific heat, and Raman scattering measurements we find evidence that the magnetic degrees of freedom of the Cu-O-Cu segments in Cu7(TeO3)6F2 lead to a mixed… 
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