重氮基已被引入5-取代的[2.2]间环phanes(MCPs)(3)的外部(13-)位。取代的[2.2] MCP重氮盐的吸收最大值与未取代的参考化合物的吸收发生红移。为了估计它们的阳离子特性,已经测量了[2.2] MCP重氮盐之间的络合物的稳定性常数(log K s)。当登录ķ小号为[2.2]携带官能团MCP重氮盐是针对欠压冈本取代基常数作图(σ p +)。对于它们,获得了线性关系。该结果表明,该官能团的电子效应可通过跨环相互作用在[2.2] MCP中的两个芳环之间传递。
(13-)position of 5-substituted [2.2]metacyclophanes (MCPs) (3). The absorption maxima of the substituted [2.2]MCP diazonium salts are bathochromically shifted from those of unsubstituted reference compounds. Stability constants (log Ks) of the complexation between the [2.2]MCP diazonium salts have been measured in order to estimate their cationic character. When log Ks for [2.2]MCP diazonium salts which
重氮基已被引入5-取代的[2.2]间环phanes(MCPs)(3)的外部(13-)位。取代的[2.2] MCP重氮盐的吸收最大值与未取代的参考化合物的吸收发生红移。为了估计它们的阳离子特性,已经测量了[2.2] MCP重氮盐之间的络合物的稳定性常数(log K s)。当登录ķ小号为[2.2]携带官能团MCP重氮盐是针对欠压冈本取代基常数作图(σ p +)。对于它们,获得了线性关系。该结果表明,该官能团的电子效应可通过跨环相互作用在[2.2] MCP中的两个芳环之间传递。