1,3-二(4-吡啶)丙烷-Cd(II)手性配合物的合成与晶体结构

Synthesis and crystal structure of 1,3-bis(4-pyridyl)propanecadmium(II)chiral coordination complex

利用室温挥发方法合成了手性化合物[Cd(bbp)2(H2O)2]·bbp·2NO3·H2O(bpp=1,3-二(4-吡啶基)丙烷);利用X射线单晶衍射分析了产物的分子结构,并测定了其荧光光谱和固体圆二色光谱.结果表明,合成产物具有含一维手性链[Cd(bbp)2(H2O)2]n的手性超分子结构;其在室温下表现出中等强度的倍频效应,其二阶非线性极化率为尿素的0.4倍,是潜在的二阶非线性光学材料.此外,合成的手性化合物呈现弱的荧光,其固体圆二色光谱则呈现正的Cotton效应.

Chiral coordination complex [Cd （bbp）2 （ H2 O）2 ]. bbp . 2NO3 . H2O （bpp = 1,3-bis （4-pyridyl）propane） was synthesized by room temperature evaporation method. The molecular structure of as-synthesized product was analyzed by single-crystal X-ray diffraction, while its fluorescence spectrum and solid circular dichroism spectrum were also measured. It was found that as-synthesized coordination compound has chiral supermolecular structure containing onedimensional chiral chain of [Cd（bbp）2 （H2O）2]n. Besides, the crystal of as-synthesized coordination compound possesses modest second-harmonic generation （SHG） activity, and its SHG activity is approximately 0.4 times as much as that of urea, showing potential application as a second-order nonlinear optical material. Moreover, as-synthesized chiral compound shows weak fluorescence, and its solid circular dichroism spectrum is dominated by positive Cotton effect.