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首页> 外文期刊>Zeitschrift fur Naturforschung, B. A Journal of Chemical Sciences >Porphyrin substituent regiochemistry, conformation and packing - the case of 5,10-diphenylporphyrin
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Porphyrin substituent regiochemistry, conformation and packing - the case of 5,10-diphenylporphyrin

机译:卟啉取代基的区域化学,构象和堆积-以5,10-二苯基卟啉为例

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摘要

5,10-Disubstituted porphyrins are more recent additions to the family of meso-substituted porphyrins. A crystallographic comparison of 5,10-diphenylporphyrin with the regioisomeric 5,15-disubstituted system reveals striking differences in their conformation. In the free base porphyrins the former uses mainly out-of-plane distortion to alleviate steric strain while in-plane core elongation predominates in the latter. In contrast, the structure of the Cu(II) complex is planar and forms strong p-p aggregates with very small lateral shifts. Macroscopically, the packing is similar to that of porphyrin sponges of the 5,10,15,20-tetraphenylporphyrin type.
机译:5,10-二取代的卟啉是介孔取代的卟啉家族的最新成员。 5,10-二苯基卟啉与区域异构体5​​,15-二取代系统的晶体学比较显示其构象存在显着差异。在游离碱卟啉中,前者主要使用面外变形来减轻空间应变,而后者则以面内核心伸长为主。相反,Cu(II)络合物的结构是平面的,并形成具有很小横向位移的强p-p聚集体。在宏观上,填充物类似于5,10,15,20-四苯基卟啉类型的卟啉海绵。

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