化学学报 ›› 1992, Vol. 50 ›› Issue (3): 249-256. 上一篇    下一篇

研究论文

八乙基卟啉及其锌配合物的分子和晶体结构

竺乃珏;李言;吴国璋;粱晓光   

  1. 中国科学院化学研究所;中国科学院感光化学研究所
  • 出版日期:1992-03-15 发布日期:1992-03-15

The molecular and crystal structures of meso-substituted octaethylporphine and its zinc complex

ZHU NAIJUE;LI YANMIN;WU GUOZHANG;LIANG XIAOGUANG   

  • Online:1992-03-15 Published:1992-03-15

测定了中位(meso)取代八乙基卟啉和无轴向配位卟啉锌(II)配合物的结构, 讨论了锌离子配位前后卟啉环的平面性, 并比较了有锌和无锌配位卟啉阴离子的几何构型。研究结果表明卟啉骨架的构型不仅决定于卟啉骨架中央孔穴的大小, 配位离子的尺寸和电子结构, 而且还决定于骨架上的取代基团。本文还分析了在卟啉骨架上取代硝基的几何构型以及它们在卟啉共轭效应中的作用。

关键词: 晶体结构测定, 硝基, 锌络合物, 分子结构, X射线衍射分析, 结构分析, 取代基效应, 卟啉

The crystal and mol. structures of OEP(NO2)4 and its Zn complexes OEP(NO2)2Zn complex, where OEP is octaethylporphine, were determine by x-ray diffractometry. Both compounds have space group P21/n, with a 1.052(5), b 20522(1), c 1.356(7) nm, b 96.12?for OEP(NO2)4; and a 0.4890(2), b 2.1816(13), c 1.5039(9)nm, b 95.24? The structures of porphinate skeleton with or without the central Zn(II) were compared. The configuration of nitro groups on the porphine skeleton show that these nitro groups also participate in the conjugation of the porphine in different levels.

Key words: CRYSTAL STRUCTURE DETERMINATION, NITRO GROUP, ZINC COMPLEX, MOLECULAR STRUCTURE, X-RAY DIFFRACTION ANALYSIS, STRUCTURAL ANALYSIS, SUBSTITUENT EFFECT, PORPHYRIN

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