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- W1689590979 abstract "Replacement of the classical acceptor TCNQ with (substituted) DCNQIs opens new routes to organic conducting materials. The radical anion salts [2,5-R1,R2-DCNQI]2M (R1,R2= Hal, Me, MeO; M = Li, Na, K, NH4, Cu, Ag, Tl) all belong to the same space group l41/a or related ones (C2/c or P4/n); therefore, the correlation between molecular size and electronic effects of the substituents and bulk properties (conductivity, susceptibility, etc.) can be evaluated. Only the copper salts display metallic conductivity, some of which undergo a phase transition (TM → 1) to a semiconductor on cooling. For this transition a threshold coordination angle N–Cu–N is found, by changing which an unprecedentedly large isotope effect upon deuteriation of [2,5-Me2DCNQI]2 can be induced. Upon the transition TM → 1 the conductivity decreased by a factor of 107–108." @default.
- W1689590979 created "2016-06-24" @default.
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- W1689590979 date "1995-01-01" @default.
- W1689590979 modified "2023-09-23" @default.
- W1689590979 title "N,N′-dicyanoquinone diimines (DCNQIs): unique acceptors for conducting materials" @default.
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- W1689590979 doi "https://doi.org/10.1039/jm9950501469" @default.
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