Anion Change as a Tool for Structure Design: Syntheses and Crystal Structures of Copper(I) Trifluoracetate and Tetrafluoroborate with 3-[(2-morpholino-4-oxo-4,5-dihydro-1,3-thiazol- 5-ylidene)methyl-phenoxy]propene

Evgeny A. Goreshnik,1* Zoran Mazej,1 Volodymyr V. Karpyak2 and Marian G. Mys’kiv2

1 Department of Inorganic Chemistry and Technology, Jožef Stefan Institute, Jamova 39, SI-1000 Ljubljana, Slovenia
2 Department of Chemistry, Ivan Franko National University, Kyryla & Mefodia, 6, 79005 L’viv, Ukraine
* Corresponding author: E-mail:

By alternating-current electrochemical synthesis crystals of two new copper(I) coordination compounds of Cu(CF3COO)C17H18N2O3S (I) and [Cu(C17H18N2O3S)2]BF4 (II) composition have been obtained and structurally investigated. In the crystal structure of I the ligand moiety acts as a bridge, being coordinated to one metal center through the C=C-bond of allyl group, and to another Cu atom by nitrogen atom of thiazole ring. Due to such a bridging function dimers of [Cu(CF3COO)C17H18N2O3S]2 composition appear. The trigonal-planar copper atom coordination sphere includes, besides the nitrogen atom and C=C bond, also one oxygen atom from trifluoroacetate anion. In the structure II two nitrogen atoms from thiazole rings of two ligand moieties form linear surrounding of copper atom resulting in a formation of [Cu(C17H18N2O3S)2]+ complex cations. The [BF4] anion is completely disordered. Mentioned dimers in I and complex cations and [BF4] anions in II are associated by weak interactions only.

Keywords: Copper(I), complex, structure design