中文摘要：

以3－氯苯基异氰酸酯为原料，利用自聚法合成了对称性3－氯苯基脲，并进行了熔点表征，分别从分子水平和宏观形貌两个角度，采用单晶X－射线衍射和扫描电镜（ SEM）方法研究了该化合物的分子结构和宏观形貌。研究结果发现，该脲化合物通过分子间脲基团的分叉型氢键进行脲－脲自组装，在分子水平上形成了一维链式结构；扫描电镜方法研究发现该结晶化合物呈条块状形貌。

英文摘要：

The symmetrical 3-chlorophenyl urea was synthesized via the self-aggregate reaction with 3-chlorophenyl isocyanate as raw material and characterized by melting point.The molecular structure and macroscopic morphology of the compound were investigated through single crystal X-ray diffraction analysis and scanning electron microscopy （ SEM ） , based on the aspect of molecular level and macroscopic morphology , respectively.The results showed that the urea compound carried out urea-urea self-assembly through bifurcated intermolecular hydrogen bond of urea groups , forming one-dimensional chain-like structure at the molecular level.The study of scanning electron microscopy indicated that the crystal compound appeared strip-type block morphology.