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DT-TTF Salts with [Cu(dcdmp)2]−: The Richness of Different Stoichiometries

AuthorsSilva, Rafaela A. L.; Santos, Isabel C.; Lopes, Elsa B.; Rabaça, Sandra; Vidal Gancedo, José ; Rovira, Concepció ; Almeida, Manuel; Belo, Dulce
KeywordsCharge Transfer Salts
Dithiolene complexes
Electrical transport properties
Ladder structures
Issue Date6-Jul-2016
PublisherAmerican Chemical Society
CitationCrystal Growth and Design 16(7): 3924-3931 (2016)
Abstract(DT-TTF)[Cu(dcdmp)(2)] (1), (DT-TTF)(2)[Cu(dcdmp)(2)] (2), and (DT-TTF)(3)[Cu(dcdmp)(2)](2) (3) are three new charge transfer salts obtained by electrocrystallization of the donor DT-TTF (dithiophene-tetrathiafulvalene) with the diamagnetic copper complex [Cu(dcdmp)(2)](-) (dcdmp = 2,3-dicyano-5,6-dimercaptopyrazine). Compounds 1 and 3 crystallize in the triclinic system and consist of out-of-registry layers of mixed stacks of donor and acceptor molecules. (DT-TTF)(2)[Cu(dcdmp)(2)] presents a structure similar to the parent spin-ladder systems with donor stacks arranged in pairs; however, a magnetic spin-ladder behavior is not observed probably due to strong interactions between pairs. Compound 3, despite the mixed nature of the stacks, displays relatively high conductivity (7 S/cm) due to a one-dimensional network of interactions between donors.
Publisher version (URL)http://dx.doi.org/10.1021/acs.cgd.6b00484
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