Abstract

The reactions of pentaphenylantimony with 2,4-difluoro-, 2,5-difluoro-, and 2-chloro-4-fluorophenol in a benzene–octane mixture of solvents afford tetraphenylantimony aroxides Ph₄SbOC₆H₃F₂-2,4 (I), Ph₄SbOC₆H₃F₂-2,5 (II), and Ph₄SbOC₆H₃(Cl-2)(F-4) (III). According to the X-ray diffraction analysis data (CIF files CCDC nos. 1973286 (I), 1975709 (II), and 1973305 (III)), the antimony atoms in the compounds have the coordination of a distorted trigonal bipyramid with the aroxide oxygen atom in the axial position. The OSbС axial angles in compounds I–III are 177.86(6)°, 177.29(7)°, and 174.34(6)°, respectively. The geometric parameters of the molecules in compounds I–III are similar in the Sb−C_eq and Sb−O bond lengths (2.118(2)−2.127(2) and 2.1780(16) Å in I; 2.122(2)−2.130(2) and 2.179(2) Å in II; and 2.116(2)−2.119(2) and 2.1803(16) Å in III). The structural organization in crystals of the compounds is due to weak hydrogen bonds involving F atoms and C–H∙∙∙π interactions. These interactions result in the organization of the molecules in the crystal of compound I into a three-dimensional network, paired chains are formed in compound II, and the molecules of compound III are organized into layers.

中文翻译：

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四苯基芳氧化锑 Ph4SbOAr (Ar = C6H3F2-2,4, C6H3F2-2,5, C6H3Cl-2-F-4) 的合成与结构

摘要

五苯基锑与 2,4-二氟-、2,5-二氟-和 2-氯-4-氟苯酚在苯-辛烷混合溶剂中的反应得到四苯基环氧化锑 Ph ₄ SbOC ₆ H ₃ F ₂ -2,4 ( I )、Ph ₄ SbOC ₆ H ₃ F ₂ -2,5 ( II )、Ph ₄ SbOC ₆ H ₃ (Cl-2)(F-4) ( III )。根据 X 射线衍射分析数据（CIF 文件 CCDC 编号 1973286（I）、1975709（II）和 1973305（III）))，化合物中的锑原子与轴向位置的芳氧化物氧原子具有扭曲的三角双锥配位。化合物I - III中的 OSbС 轴角分别为 177.86 (6)°、177.29(7)° 和 174.34(6)°。分子化合物中的几何参数我- III是在SB-C类似的_当量和Sb-O键长（2.118（2）-2.127（2）和2.1780（16）一种在我; 2.122（2）-2.130 (2) and 2.179(2) Å in II ; and 2.116(2)−2.119(2) and 2.1803(16) Å in III）。化合物晶体中的结构组织是由于涉及 F 原子的弱氢键和 C-H∙∙∙π 相互作用。这些相互作用导致化合物I晶体中的分子组织成三维网络，化合物II中形成成对链，化合物III分子组织成层。