Meso-ionic化合物

3区化学 Q2 Materials Science

Advances in Heterocyclic Chemistry Pub Date : 2022-01-01 DOI:10.1039/QR9571100015

W. Baker, W. Ollis

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引用次数: 100

摘要

本章回顾了中离子杂环。它讨论了目前已知的中离子杂环类型，然后可以考虑与某些结构条件相关的可能性总数。如果化合物是五元或可能是六元杂环化合物，不能用任何一种共价结构或极性结构令人满意地表示，并且与组成环的原子结合有六电子，则可以适当地称为中离子型化合物。环带有少量的正电荷，与位于共价原子或原子群上的相应负电荷相平衡。中离子型一词的采用和它的频繁使用已经证明了它的实用性。五元介离子杂环可分为两大类:A型和B型。本章主要讨论目前已知的44个A型成员和8个B型成员。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Meso-ionic compounds

Publisher Summary This chapter reviews meso-ionic heterocycles. It discusses the currently known types of meso-ionic heterocycles, which can then be considered in relation to the total number of possibilities associated with certain structural conditions. A compound may be appropriately called meso-ionic if it is a five or possibly a six-membered heterocyclic compound that cannot be represented satisfactorily by any one covalent or polar structure and possesses a sextet of electrons in association with the atoms comprising the ring. The ring bears a fractional positive charge balanced by a corresponding negative charge located on a covalently attached atom or group of atoms. The adoption of the term meso-ionic and its frequent use has demonstrated its usefulness. The five-membered mesoionic heterocycles can be divided into two general classes: type A and type B. This chapter is concerned with the currently known 44 members of type A and eight members of type B.

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来源期刊

Advances in Heterocyclic Chemistry 化学-有机化学

CiteScore

5.80

自引率

0.00%

发文量

审稿时长

>12 weeks

期刊介绍： Established in 1960, Advances in Heterocyclic Chemistry is the definitive serial in the area-one of great importance to organic chemists, polymer chemists and most biological scientists. Each volume contains an index and each chapter is comprehensively referenced.