科研之友
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摘要
A novel asymmetric tetrathiafulvalene (TTF) derivative bearing a conjugated phenyl beta-diketone moiety 1-(4-tetrathiafulvalyphenyl)-4,4,4-trifluorobutane-1,3-dione (TTF-ph-tfacH) has been synthesized using feasible methods and fully characterized. The chelating ability of its enolate anion (TTF-ph-tfac) has been investigated with [(MCl2)-Cl-II center dot xH(2)O] (M = Zn and Co) leading to complexes [Zn(TTF-ph-tfac)(2)(CH3OH)(2)] (2a) and [Co(TTF-ph-tfac)(2)(CH3OH)(2)] (2b), where the metal center is coordinated with two TTF-ph-tfac ligands and two methanol molecules. This redox active ligand shows promising features for the elaboration of hybrid organic-inorganic building blocks. The magnetic analysis for 2b reveals very weak antiferromagnetic interactions between spin centers, which would be a precursor for magnetic conductors. The herein reported mono-substituted TTF derivative interconnected via the phenyl group, which is of extended conjugation, enhanced planarity, and asymmetric geometry, shows a great promise to multifunctional (conducting, non-linear optical, and magnetic) materials.
