Crown ether complexation of 1:1 alkali metal TCNQ salts, MTCNQ (M=K, Rb, Tl) leads to structures containing isolated TCNQ dimers. These materials provide valuable models for investigating the spectroscopic and electronic behaviour of TCNQ−. dimer components which are key structural fragments of, for example, organic metals and semiconductors.
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Grossel et al. (1992) studied this question.
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