[Hg3]4+ Cation in Inorganic Crystal Structures |
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| Authors: | S. V. Borisov S. A. Magarill N. V. Pervukhina |
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| Affiliation: | (1) A. V. Nikolaev Institute of Inorganic Chemistry, Siberian Branch, Russian Academy of Sciences, Novosibirsk |
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| Abstract: | The crystal-chemical structure of the minerals and inorganic compounds kuznetsovite [Hg3](AsO4)Cl and terlinguaite [Hg3][HgO2]Cl2, as well as [Hg3]3(AsO4)4 and [Hg3]2[HgO2](PO2 and their analogs, is considered from the viewpoint of the packing of large supramolecular atomic groups. The  cationic layer of polyhedra around the large [Hg3]4+ cations, alternating with the anionic layer of [HgO2]2-, (AsO4)3-, (PO4)3-, Cl-, plays the major role in structure formation. Segregation of mercury cations of different valences possibly reflects the solid-state transformations occurring in nature and accompanied by mercury liberation. |
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| Keywords: | crystal chemistry of mercury packing of [Hg3]4+ complex cations and [AsO43- and [PO43- complex anions kuznetsovite and terlinguaite minerals |
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