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Issue 43, 2013
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New mercury-contained cationic frameworks stabilized by (GaCl4) unit via weak electrostatic forces in supramolecular compounds (Hg11P4)(GaCl4)4 and (Hg3AsS)(GaCl4)

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Abstract

Two new inorganic supramolecular compounds, (Hg11P4)(GaCl4)4 (1) and (Hg3AsS)(GaCl4) (2), have been prepared by the solid-state reactions. Their structures are characterized by mercury-containing cationic hosts and discrete (GaCl4) guests, which is a derivative of a very strong Lewis acid. The three-dimensional cationic framework of 1, (Hg11P4)4+, is marvellously extended by Hg22+ and Hg32+ groups as well as Hg2+ ions to form two large tunnels with different sizes each embedded with two columns of (GaCl4) anions. Compound 2 features a layered structure with (GaCl4) tetrahedra being intercalated between two-dimensional (Hg3AsS)+ layers and it is the first mercury pnictidechalcohalide. It is found that the weak electrostatic forces between hosts and guests play a key role in the stabilization of the whole structures of 1 and 2, which is strikingly different from almost all the reported metal pnictidehalide and chalcohalide supramolecular compounds. Optical dielectric constants calculations show that both 1 and 2 possess strong dielectric anisotropy.

Graphical abstract: New mercury-contained cationic frameworks stabilized by (GaCl4)− unit via weak electrostatic forces in supramolecular compounds (Hg11P4)(GaCl4)4 and (Hg3AsS)(GaCl4)

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Publication details

The article was received on 03 Jun 2013, accepted on 11 Aug 2013 and first published on 11 Sep 2013


Article type: Paper
DOI: 10.1039/C3DT51451J
Citation: Dalton Trans., 2013,42, 15475-15481
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    New mercury-contained cationic frameworks stabilized by (GaCl4) unit via weak electrostatic forces in supramolecular compounds (Hg11P4)(GaCl4)4 and (Hg3AsS)(GaCl4)

    X. Jiang, X. Li, Y. Fan, B. Liu, H. Zeng and G. Guo, Dalton Trans., 2013, 42, 15475
    DOI: 10.1039/C3DT51451J

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