AI Article Synopsis
- The study introduces a new type of single-component molecular metal derived from gold bis(dithiolene) complexes, which do not rely on tetrathiafulvalene (TTF) precursors.
- This new complex exhibits impressive conductivity, reaching 750 S·cm at room temperature and soaring up to 3800 S·cm at low temperatures (4 K).
- The stability of its metallic state is attributed to significant internal electron transfer and strong interactions between molecular stacks and layers.
Article Abstract
Molecular metals have been essentially obtained with tetrathiafulvalene (TTF)-based precursors, either with multicomponent ionic materials or, in a few instances, with single-component systems. In that respect, gold bis(dithiolene) complexes, in their neutral radical state, provide a prototype platform toward such single-component conductors. Herein we report the first single-component molecular metal under ambient pressure derived from such Au complexes without any TTF backbone. This complex exhibits a conductivity of 750 S·cm at 300 K up to 3800 S·cm at 4 K. First-principles electronic structure calculations show that the striking stability of the metallic state finds its origin in sizable internal electron transfer from the SOMO-1 to the SOMO of the complex as well as in substantial interstack and interlayer interactions.
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| http://dx.doi.org/10.1021/jacs.8b03714 | DOI Listing |
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