Polycations Stabilised by Borosulfates: [Au3Cl4][B(S2O7)2] and the One-Dimensional Metal [Au2Cl4][B(S2O7)2](SO3) |
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| Authors: | Stefan Sutorius Dr David van Gerven Dr Selina Olthof Dr Bertold Rasche Dr Jörn Bruns |
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| Institution: | 1. Institute of Inorganic Chemistry, University of Cologne, Greinstrasse 6, 50939 Cologne, Germany;2. Institute of Physical Chemistry, University of Cologne, Greinstrasse 4, 50939 Cologne, Germany |
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| Abstract: | (SO4)-rich silicate analogue borosulfates are able to stabilise cationic cluster-like and chain-like aggregates. Single crystals of Au3Cl4]B(S2O7)2] and Au2Cl4]B(S2O7)2](SO3) were obtained by solvothermal reaction with SO3, and the electronic properties were investigated by means of density functional theory–based calculations. Au3Cl4]B(S2O7)2] exhibits a cluster-like cation, and the cationic gold-chloride strands in Au2Cl4]B(S2O7)2](SO3) are found to resemble one-dimensional metallic wires. This is confirmed by polarisation microscopy. |
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| Keywords: | borosulfates crystal structures electronic structures one-dimensional metals polycations |
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