Cis, trans, and metal effects in transition metal porphyrins
Cis, trans, and metal effects in transition metal porphyrins
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过渡金属卟啉的顺式、反式和金属效应
DOI：
10.1007/bfb0116542
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发表时间：
1978
影响因子：
5.6
通讯作者：
Paul Smith
中科院分区：
文献类型：
--
作者：
J. W. Buchler;W. Kokisch;Paul Smith
顺式、反式和金属效应是可以在过渡金属卟啉中观察到的特定的"无机"取代基效应，并且取自它们的基态、热力学或动力学性质。这些影响的知识可能有助于整理出基本的电子参数，支配的具体行动的海涅蛋白质在生物氧的运输和氧化还原过程r显着的影响被发现在金属卟啉的光谱"hypso"或"hyper"类型（例如，与金属在低自旋d 6或高自旋d 5配置）。一组简单的电子传输方案有助于实现从各种不同来源获得的顺式、反式和金属效应的操作的直观理解。这些格式对于hypso型的情况工作得相当好，但是对于d1、d2和高自旋d4或d5的hyper型的情况工作得仅仅令人满意。重要的半染色质（低自旋d 5系统，"混合hypso/hyper"类型）尚未得到充分的理解。
Cis, trans, and metal effects are the specific" inorganic" substituent effects that may be observed in the transition metal porphyrins and taken from their ground-state, thermodynamic, or kinetic properties. A knowledge of these effects may help to sort out the essential electronic parameters that govern the specific action of the heine proteins in biologic oxygen transport and redox processes r Pronounced effects are found in metalloporphyrins of the spectral" hypso" or" hyper" type (eg, with metals in the low spin d 6 or high-spin d 5 configurations). A simple set of electronic transmission schemes helps to achieve an intuitive understanding of the operation of the cis, trans and metal effects taken from a large variety of different sources. The schemes work rather nicely with the hypso type, but only satisfactorily with the hyper type in the d 1, d 2, and high-spin d 4 or d 5 cases. The important hemichromes (low-spin d 5 systems," mixed hypso/hyper" type) are not yet sufficiently understood.