Structural features in Tutton’s salts K2[M2+(H2O)6](SO4)2, with M2+ = Mg, Fe, Co, Ni, Cu, and Zn

  title={Structural features in Tutton’s salts K2[M2+(H2O)6](SO4)2, with M2+ = Mg, Fe, Co, Ni, Cu, and Zn},
  author={Ferdinando Bosi and Girolamo Belardi and Paolo Ballirano},
  journal={American Mineralogist},
  pages={74 - 82}
Abstract The crystal chemistry of six crystals of general formula K2[M2+(H2O)6](SO4)2, with M2+ = Mg, Fe, Co, Ni, Cu, and Zn, was investigated by single-crystal structure analysis to determine the effects of the chemical variation of M2+ on the structural environment surrounding K, M, and S sites. Results indicate that the distortion in the SO4 tetrahedron and the MO6 octahedron is very small, except for CuO6 where it is pronounced because of the Jahn-Teller effect. The KO8-octacoordinate… 

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