Beilstein J. Org. Chem.2015,11, 850–859, doi:10.3762/bjoc.11.95
that of 3·(CuBr4)0.5·CuBr3·THF shows the abrupt change at 270 K caused by the modulation of intermolecular interactions. The thermo variation of magnetic susceptibility for the other complexes follows the Curie–Weiss law, indicating the weak antiferromagneticinteraction at low temperature.
Keywords
: antiferromagneticinteraction; arylthio-substituted tetrathiafulvalenes; charge-transfer; crystal structure; magnetic property; Introduction
Since firstly synthesized in 1970s [1], tetrathiafulvalene (TTF) and its derivatives have been intensively studied to explore functional organic materials [2]. Inspired by
magnetic properties. The temperature dependence of the magnetic susceptibility follows the Curie–Weiss law, and the spins in these salts show the antiferromagneticinteraction at low temperature. The antiferromagnetic interactions of Cu(II) in 1·CuBr4, 2·CuBr4, and 4·CuBr4 arise from the d–π–d pathway, as
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Graphical Abstract
Scheme 1:
Chemical structures of arylthio-substituted tetrathiafulvalenes (1–7).