Hydrogen-Bonding Interactions in a Single-Component Molecular Conductor: a Hydroxyethyl-Substituted Radical Gold Dithiolene Complex

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• 作者：Yann Le Gal ; Thierry Roisnel ; Pascale Auban-Senzier ; Thierry Guizouarn ; Dominique Lorcy
• 刊名：Inorganic Chemistry
• 出版年：2014
• 出版时间：August 18, 2014
• 年：2014
• 卷：53
• 期：16
• 页码：8755-8761
• 全文大小：414K
• ISSN：1520-510X

文摘

The anionic hydroxyethyl-substituted gold dithiolene complex [NEt₄][Au(EtOH-thiazdt)₂] is synthesized and further oxidized to the neutral radical species [Au(EtOH-thiazdt)₂]^{鈥?/sup> through electrocrystallization. Single-crystal X-ray diffraction studies highlight the existence of the two cis and trans isomers for the monoanionic complex, with involvement of the hydroxy group in intermolecular O鈥揌路路路S hydrogen-bonding interactions. The neutral radical complex, [Au(EtOH-thiazdt)₂]鈥?/sup>, is isostructural with its known ethyl analogue, namely, [Au(Et-thiazdt)₂]鈥?/sup>. It exhibits a semiconducting behavior (蟽_RT = 0.05鈥?.07 S cm鈥?) at room temperature and ambient pressure with an activation energy of 0.14 eV. Comparison of the crystal structures and transport and magnetic properties with those of the prototypical [Au(Et-thiazdt)₂]鈥?/sup> single-component conductor shows that the replacement of ethyl by a slightly bulkier hydroxyethyl substituent affects only weakly the overlap interactions, complemented here by added O鈥揌路路路S hydrogen-bonding interactions.}