Experimental Study of the Cooperativity of CH−π Interactions
作者:Chen Zhao、Ping Li、Mark D. Smith、Perry J. Pellechia、Ken D. Shimizu
DOI:10.1021/ol5014729
日期:2014.7.3
A series of new torsional molecular balances was designed to study the cooperativity of CH-pi interaction in the solid state and in solution. The measured interaction energies correlated better to the number of participating alkyl carbons than to the number of CH-pi contacts. The methyl and ethyl groups displayed additive interaction energies. However, the branched isopropyl group displayed strong positive cooperativity with higher than predicted interaction energies.