Issue 2, 2017

Syntheses and properties of selenido mercurates with [HgSe2]2− anions in diverse chemical environments

Abstract

By aminothermal treatment of ternary CsxHgySez phases, or of Cs2Se with HgSO4, respectively, in 1,2-diaminoethane (en) and en/water mixtures at 150 °C, four new cesium selenido mercurate compounds Cs2[HgSe2] (1), [Cs2(H2O)2][HgSe2] (2), Cs[Cs3(H2O)0.5][HgSe2](Se2) (3) and Cs19(Hen)(H2en)(Se2)[HgSe2]2[HgSe3][Hg2Se5]2 (4) were synthesized. The precursor phases were prepared by fusion of Cs2Se and HgSe at 600 °C. 2 comprises an unprecedented 1D anionic selenido mercurate substructure. 3 and 4 are rare examples of mercurate compounds with different anions, one of which comprises a new type of a dinuclear chalcogenido mercurate anion. The structures of all four compounds were identified by single crystal X-ray diffraction. Micro X-ray fluorescence spectroscopy (μ-XFS) was used to confirm the heavy atom compositions, and optical absorption measurements were performed to determine the optical band gaps.

Graphical abstract: Syntheses and properties of selenido mercurates with [HgSe2]2− anions in diverse chemical environments

Supplementary files

Article information

Article type
Research Article
Submitted
03 Nov 2016
Accepted
06 Dez 2016
First published
08 Dez 2016
This article is Open Access
Creative Commons BY-NC license

Inorg. Chem. Front., 2017,4, 336-342

Syntheses and properties of selenido mercurates with [HgSe2]2− anions in diverse chemical environments

C. Donsbach and S. Dehnen, Inorg. Chem. Front., 2017, 4, 336 DOI: 10.1039/C6QI00481D

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