4,4'-二甲氧基查耳酮的合成和晶体结构测定

CRYSTAL STRUCTURE OF 4,4'-DIMETHOXY CHALCONE

非线性光学晶体材料可用于制作光参量振荡器,升频或降频转换器,从而得到不同波长的激光,扩大了激光的用途,具有重要的理论和实用意义。有机非线性晶体材料以其具有非线性系数大,抗光损伤阈值高等特性更受到人们的青睐,是很有希望的一类倍频材料。

The molecular structure of 4,4'-dimethoxy chalcone single crystal has been determined by X-ray diffraction method. The crystals are orthorhombie with space group P2_12_12_1 and a=5.268(3), b=30.639(8), c=8.652(4)A, Z=4, V=1396.56A^3 and Dx=1.276g/cm^3.The structure was solved by direct mothods and refined by full metrix least squares method to the final R=0.082 for 991 reflections having I≥3o(I). Being irradiated by 1064nm Nd^(3+):YIG laser beam 4,4'-dimethoxy chalcone crystal produces a light of 532nm wavelength.