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首页> 外文期刊>Physica, B. Condensed Matter >Synthesis, crystal growth and characterization of 1,5-diphenylpenta-1,4- dien-3-one: An organic crystal
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Synthesis, crystal growth and characterization of 1,5-diphenylpenta-1,4- dien-3-one: An organic crystal

机译:1,5-二苯基戊-1,4-二烯-3-酮的合成,晶体生长和表征:一种有机晶体

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摘要

1,5-Diphenylpenta-1,4-dien-3-one (dibenzalacetone, DBA) was synthesized by a base-catalyzed aldol condensation reaction between benzaldehyde and acetone. High quality single crystals have been grown by the slow evaporation of ethanol solution and the crystal belongs to monoclinic system with centrosymmetric space group C 2/c. The DBA crystals are transparent in the entire visible region and have a lower optical cutoff at ~440 nm. It is stable up to 119 °C and has a good chemical stability. The high resolution X-ray diffraction curve (DC) indicates that the specimen is free from structural grain boundaries. Molecular packing leads to a centrosymmetric arrangement resulting in zero second harmonic generation (SHG; X(2)=0) efficiency.
机译:通过苯甲醛与丙酮之间的碱催化醛醇缩合反应合成了1,5-二苯基戊-1,4-二烯-3-酮(dibenzalacetone,DBA)。通过缓慢蒸发乙醇溶液已经生长出高质量的单晶,并且该晶体属于具有中心对称空间群C 2 / c的单斜晶系。 DBA晶体在整个可见光区域都是透明的,并且在〜440 nm处具有较低的光学截止。在高达119°C的温度下稳定,化学稳定性良好。高分辨率X射线衍射曲线(DC)表示样品没有结构晶界。分子堆积导致中心对称排列,导致零次谐波产生(SHG; X(2)= 0)效率为零。

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