Thiourea N- and S-derivatives as ligands: Synthesis and crystal structure of 4CuCl · 6All-NHCSNH2 and [(All-NH)2C-SC2H5]Cu2Cl xBr3-x (x = 0.765, All is allyl)

Crystals of the compounds 4CuCl · 6CH2=CH-CH2-NHCSNH2 (I) and [(CH2=CH-CH2-NH)2C-SC2H 5]Cu2ClxBr3-x (x = 0.765) (II) were synthesized by the ac electrochemical method, and their crystal structures were determined (CuKα and MoKα radiation, 2575 and 1090 unique reflections with F ≥ 4σ(F), R = 0.050 and 0.028 for I and II, respectively). Complex I crystallizes in space group C2/c, a = 17.230(7) Å, b = 12.258(5) Å, c = 42.95(2) Å, β= 97.48(4)°, V = 8994(7) Å3, Z = 8. The structure of π-complex II is described by space group P2⊥/n, a = 10.633(5) Å, b = 9.280(5) Å, c = 16.024(4) Å, γ = 102.16(3)°, V = 1546(1) Å3, Z = 4. Complex I is built from isolated units of the aforementioned composition; every allylthiourea molecule coordinates two metal atoms through the sulfur atom. The distorted tetrahedral surrounding of every Cu(I) atom involves three S atoms and one Cl atom. The N,N′-diallyl-S-ethylisotiouronium cation coordinates two copper atoms through the C=C bonds, 1.32(1) and 1.35(1)Å, uniting the cuprohalide chains in layers. The structure of complex II is very close to the structure of the previously studied π-complex of diallylammonium [H+L]Cu2Cl3. © 2001 MAIK "Nauka/Interperiodica"

Copper(I) nitrate π-complexes with 1-allyl-2-thiourea: Synthesis and crystal structure of [Cu(C3H5NHC(S)NH2)(CH3CN)]NO 3 and [Cu(C3H5NHC(S)NH2)3]NO3

Crystal complexes [Cu(C3H5NHC(S)NH2)(CH3CN)]NO 3 (I) and [Cu(C3H5NHC(S)NH2)3]NO3 (II) were synthesized in acetonitrile or benzonitrile solutions containing Cu(NO3)2 · 3H2O and 1-allyl-2-thio-urea by the ac electrochemical method. The crystal structures of I and II were determined by X-ray diffraction [a CAD-4 diffractometer, MoKα radiation, 1757 reflections with F ≥ 4σF, 1440 reflections with F ≥ 6σF, R = 0.049 and 0.048 for I and II, respectively]. For π,σ-complex I, space group P21/n, a = 7.9490(8), b = 20.618(2), c = 13.675(4) Å, β = 95.46(2)°, and Z = 8. For σ-complex II, space group R3, a = 12.3671(7), c = 24.71(1) Å, and Z = 6. In I, the copper(I) atom is in a trigonal-pyramidal environment formed by two sulfur atoms, a C=C bond, and the N atom of the CH3CN molecule. In II, copper(I) is in a trigonal planar environment of sulfur atoms. © 1996 MAEe cyrillic signK Hayκa/Interperiodica Publishing