Abstract
Recently, a new class of electron acceptors based on N, N’-dicyanoquinonediimine (DCNQI), and a number of their charge-transfer complexes and anion radical salts have been prepared (1–5). Among them the compound (2,5-DM-DCNQI)2Cu has attracted special interest, because it exhibits very high electrical conductivity (up to 5×105 S cm−1 below 10 K) and retains its metallic behavior down to 1.3 K without metal-insulator transition (3). Anion radical salts with other counterions exhibit lower conductivities and are semiconductors, or undergo a Peierls transition in the temperature range 100–150 K (4).
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Kamitsos, E.I., Chryssikos, G.D., Gionis, V. (1990). Spectroscopic Investigation of (2,5-DM-DCNQI)2M Materials in Bulk and Thin Film Forms. In: Metzger, R.M., Day, P., Papavassiliou, G.C. (eds) Lower-Dimensional Systems and Molecular Electronics. NATO ASI Series, vol 248. Springer, Boston, MA. https://doi.org/10.1007/978-1-4899-2088-1_17
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