Synthesis, crystal structure, conductivity and magnetic properties of trifluoromethylated dinuclear copper(II) complexes with tetracyanoquinodimethane

Abstract

A new compound of formula [Cu₂L²][tcnq]₃ has been obtained where L² is the Robson-type binucleating macrocyclic dianionic ligand obtained by condensation of 1,3-diaminopropane and 2,6-diformyl-4-trifluoromethylphenol and tcnq is tetracyanoquinodimethane. A comparison of the spectroscopic, conducting and magnetic properties of this compound with those of related copper–tcnq materials affords a reasonable understanding of the electronic properties. Single crystals of a partially fluorinated compound of formula [Cu₂L³][tcnq]₃ have been obtained. A careful examination of the crystallographic data suggests similar properties for both fluorinated compounds.

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