RAMAN AND INFRARED-SPECTRA OF BIS(THIOUREA)ZINC CHLORIDE ZN[CS(NH2)(2)](2)CL-2 SINGLE-CRYSTAL

Single crystals of bis(thiourea)zinc chloride, Zn[CS(NH2)(2)](2)Cl-2 ( BTZC), were grown by slow evaporation of an aqueous solution at room t emperature. The crystal has been studied at room temperature by Raman spectroscopy between 20 and 1700 cm(-1) and 3000 and 3500 cm(-1) and b y infrared transmittance in the 400 to 4000 cm(-1) wavenumber range. T he vibrational modes are classified by the factor group analysis metho d and the spectral bands are compared with those of parent compounds i n order to propose a tentative assignment of the observed modes. Preli minary second harmonic generation measurements have allowed to identif y the C-2 nu(9) space group symmetry of the compound.