Abstract
Both compounds of CuBr⋅C6H4N3(OC3H5) (sp. gr. P1, a = 7.633(1) A, b = 9.987(1) A, c = 14.898(2) A, α = 104.75(1)∘, β = 94.76(1)∘, γ = 106.90(1)∘) (I) and 2CuCl⋅C6H4N3(OC3H5) (sp. gr. Cc, a = 11.2483(4) A, b = 16.7076(6) A, c = 7.2948(3) A, β = 118.612(2)∘) (II) composition were prepared by alternating-current electrochemical synthesis. In I due to a bridging function of organic moieties 16-membered cycles appear which are combined into ribbons {Cu2Br2[(C6H4N3(OC3H5)]2} n . Each of two crystallographically independent copper atom possesses a trigonal-pyramidal arrangement with different degree of tetrahedral distortion. Distinctive numbers of hydrogen bonds around Br1 and Br2 atoms cause rather appreciable distinctions in copper–olefinic bond interaction effectiveness for each metal atom. In II Cu2Cl2 rhombs are joined to infinite chains oriented along [010] direction. Each ligand molecule is also coordinated through the C=C—bond of the allylic group to copper atom of one inorganic chain and through the nitrogen atom to a metal atom belonging to another copper-halide chain. Cu1 atoms is tetrahedrally surrounded by three chlorine atoms and nitrogen one, whereas a trigonal-planar arrangement of Cu2 atom is formed by two halogen atoms and slightly disordered olefinic group.
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