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在水和N-甲基甲酰胺的混合溶剂中生长出了金属有机配合物非线性光学晶体材料:二N-甲基甲酰胺合硫氰酸汞锰:MnHg(SCN)4(HCONHCH3)2,简称MMTN晶体。用热重/差热分析法(TGA/DTA)、差示扫描量热法(DSC)、热机械分析法(TMA)、紫外-可见-近红外、红外、拉曼和粉末衍射光谱研究了它的热学和光学性质。MMTN晶体具有较高的物理化学稳定性。在300K时,其比热为635.1 J mol-11 K-1。晶体的热膨胀系数为a1=6.18×10-5K-1,a2=3.91×10-5K-1,a3=9.53×10-6K-1。MMTN的紫外截止波长在354nm;较硫氰酸汞锰(MMTC)晶体紫移了19nm,在360—2000nm具有良好的透光性能。
Metal-organic complexes were synthesized in a mixed solvent of water and N-methylformamide. Nonlinear optical crystal materials: 2-N-methylformamide and mercuric thiocyanate: MnHg (SCN) 4 (HCONHCH3) Referred to as MMTN crystal. It was studied by thermogravimetric / differential thermal analysis (TGA / DTA), differential scanning calorimetry (DSC), thermomechanical analysis (TMA), UV-Vis-NIR, IR, Raman and powder diffraction spectroscopy Thermal and optical properties. MMTN crystals have high physicochemical stability. At 300 K, its specific heat is 635.1 J mol-11 K-1. The thermal expansion coefficient of the crystal is a1 = 6.18 × 10 -5 K -1, a 2 = 3.91 × 10 -5 K -1, and a 3 = 9.53 × 10 -6 K -1. The UV cutoff wavelength of MMTN is 354nm, which is 19nm longer than that of MMTC crystals and has good light transmission at 360-2000nm.