| Abstract: The title compound has been prepared and characterized by elemental analyses, infrared and FT-Raman spectra, ESR and thermal analyses. The crystal and molecular structure of bis (N′-ethyl-N-piperazinly-carbodi-thioato-S,S′) copper(Ⅱ) complex, Cu(S2CNC4H8NC2H5)2, was determined by X-ray diffraction methods. The compound crystallizes in triclinic system, space group P1, with lattice parameters a=0.667 30(13) nm, b=0.847 30(17) nm, c=0.894 60(18) nm, α=85.00(3)°, β=78.69(3)°, γ=80.05(3)°, Mr=442.17, V=0.487 78(17) nm3, Z=1, Dc=1.505 g·cm-3, F(000)=231, R=0.050 5 and wR=0.137 7. In the structure, central Cu atom coordination geometry is slightly disto-rted square-planarn with the four S atoms from the two bidentate S2CNC4H8NC2H5 ligands. The four Cu-S bond distances are in the range of 0.220 10(11)～0.220 34(13) nm. The FT-Raman and IR spectral data are in agreement with the structural data. ESR data indicate that Cu(Ⅱ) ions are situated at the center of symmetry and the local structure belongs to D2h; the therma |
