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Because complex 1 belongs to crystal class 222 and point group (D2), and complex 2 crystallizes in the space group Cc, which belongs to polar point group Cs, becauseof the ligand coordination enhancing the rigidity of ligand, a good donor acceptor system is formed, which is essential for SHG effect, so we performed quasi-Kurtz [25]. SHG measurements on powder sample of 1 and 2 to confirm its acentricity as well as to evaluate its potential application as second-order NLO material. The compound 1 displays a second harmonic generation (SHG) response comparable to urea and 2 display SHG activity with a response of approximately 0.8 times of that for urea.
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xiaohanhan2007

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被风掠过: 金币+31, 翻译EPI+1, ★★★很有帮助 2012-03-27 18:13:24
由于配合物1属于222晶族和D2点群,而配合物2结晶于Cc空间群,属于极性CS点群,同时配体的配位增加了配体的刚性而形成了良好的供体受体系统,这对SHG效应是必不可少的,因此我们进行准Kurtz实验。 对粉末样品1和2进行SHG测试证实了其非心特性以及可作为潜在的二阶非线性光学材料。化合物1表现出与尿素相当的二次谐波生成(SHG)响应,而2的SHG活性响应约为尿素的0.8倍。
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