以NH_4SCN和 CdCl_2·2H_2O为反应原料,采用缓慢降温法,从水溶液中生长了尺寸为:10 mm×7 mm×4 mm新的化合物Cd(SCN)Cl单晶体; 采用元素分析、红外光谱、EDS、TG/DTA、粉末X射线衍射和单晶X射线衍射对所生长的晶体进行了表征.结果表明:所得晶体分子式为:Cd(SCN)Cl,属于斜方晶系Pnma空间群,晶胞参数为a=0.95967(7) nm, b=0.42595(3) nm, c=1.01789(7) nm, V=0.41608(5) nm~3,Z=4.热分析结果表明,晶体在190 ℃时具有良好的物理化学稳定性并且热分解的最终残留物是CdS.采用重量分析法测定了化合物Cd(SCN)Cl在不同温度条件下的溶解度.采用维氏显微硬度法对该晶体的力学性能进行了研究,其硬度值为78.6 kg/mm~2.
Single-crystals of a new complex [Cd(SCN)Cl](TCCC), with dimension of 10 mm×7 mm×4 mm, were grown via slow temperature-lowering method from aqueous solutions using NH_4SCN and CdCl_2·2H_2O as reaction sources; The as-grown [Cd(SCN)Cl] crystals (TCCC) were characterized by elemental analysis, IR, EDS, TG/DTA, X-ray powder diffraction and single-crystal X-ray diffraction. The results showed that the molecular formula of the as-grown crystal is Cd(SCN)Cl and it crystallizes in Pnma space group of orthorhombic system, with cell parameters a=0.95967(7) nm, b=0.42595(3) nm, c=1.01789(7) nm, V=0.41608(5) nm~3 and Z=4. Thermal analysis revealed that the crystal exhibits good physicochemical stability up to 190 ℃, and the final residue of thermal decomposition is CdS. Solubility of the complex [Cd(SCN)Cl] (TCCC) has been determined for various temperatures adopting the gravimetric method. The mechanical properties of the crystals have been studied using Vickers microhardness tester and the hardness was 78.6 kg/mm~2.
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