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Synthesis and Crystal Structure of Cu6O2(MoO4)3(SO4), New Copper Molybdate Oxosulfate, Structurally Related to Vergasovaite and Glikinite

  • 期刊论文

  • 发表日期：

    2024年12月27日

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  • A. S. Borisov,
  • O. I. Siidra,
  • D. O. Charkin,
  • G. V. Nikolaevich,
  • A. S. Baikina,
  • E. V. Nazarchuk,
  • A. Holzheid

摘要

Abstract

We report synthesis and crystal structure of a new copper molybdate oxosulfate Cu6O2(MoO4)3(SO4). The new compound is obtained in evacuated silica ampoules at 675-725 °C. Cu6O2(MoO4)3(SO4) is monoclinic, space group P21/m, a = 7.5208(4) Å, b = 6.8602(3) Å, c = 14.0019(7) Å, β = 93.471(5)°, V = 721.09(6) Å3, R1 = 0.051. The 3D framework of the new compound consists of oxo-centered [OCu3]4+ chains and MoO4 and SO4 tetrahedra. The structural motif of the new compound is related to the previously described fumarole minerals, glikinite Zn3O(SO4)2 and vergasovaite Cu3O(MoO4)(SO4). The crystal chemical peculiarities of this group of synthetic compounds and minerals are discussed.