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Synthesis and crystal structure of Cu(I) -complexes with N-allyl-1,2,3-triazole of [Cu(C5H7N3)Br], [Cu(C5H7N3)2(СH3C6H4SO3)] and [Cu(C5H7N3)(CF3COO)] composition
Authors: А.М. Fed'ko, Yu.I. Slyvka, М.G. Mys'kiv
Number of views: 299
Using the alternating-current electrochemical technique, three novel copper(I) -complexes [Cu(Nalt1)Br] (I), [Cu(Nalt1)2(CH3C6H4SO3)] (II) and [Cu(Nalt2)(CF3COO)] (III) were synthesized from acetonitrile solutions of the mixture of 1-N-allyl-1,2,3-triazole and 2-N-allyl-1,2,3-triazole and the corresponding copper(II) salts (CuBr2, Cu(п-СH3C6H4SO3)xH2O, Cu(CF3COO)2xH2O). The compounds were studied by single crystal X-ray diffraction: (I) sp. gr. P : a=7.107(3) Å, b=7.162(3) Å, c=8.050(3) Å, α=98.83(3), β=106.41(3), =100.52(3), V=377.2(3) Å3, Z=2; (II) sp. gr. P21/c: a=7.977(3) Å, b=31.665(8) Å, c=7.959(3) Å, β=101.44(3), V=1970.4(12) Å3, Z=4; (III) sp. gr. P21/n: a=8.215(3) Å, b=10.212(4) Å, c=11.520(4) Å, β=93.30(3), V=964.8(6) Å3, Z=4. Structures I–III are characterized by the presence of one crystallographically independent Cu(I) ion, possessing trigonal-pyramidal environment. Isomer-selective complexation toward copper(I) ion was observed: ,-bridged 1-N-allyl-1,2,3-triazole molecule is coordinated to metal centers in structures I and II, while 2-N-allyl-1,2,3-triazole fully realizes its coordination ability and is bonded to copper(I) atoms in ,-chelate bridging mode. Complex III is the second-known structurally studied copper(I) -complex with p-toluenesulfonate ion.