The anellation of a 6-membered ring to the 2,3-position of corannulene (=dibenzo[ghi,mno]fluoranthene; 1) leads to curved aromatic compounds with a significantly higher bowl-inversion barrier than corannulene (see Fig. 1). If the bridge is −CH2−NR−CH2−, a variety of linkers can be introduced at the N(2) atom, and the corresponding curved aromatics act as versatile building blocks for larger structures
Synthesis and Quantum Mechanical Structure of <i>sym-</i>Pentamethylcorannulene and Decamethylcorannulene
作者:T. Jon Seiders、Kim K. Baldridge、Eric L. Elliott、Gunther H. Grube、Jay S. Siegel
DOI:10.1021/ja991486q
日期:1999.8.1
Structure/Energy Correlation of Bowl Depth and Inversion Barrier in Corannulene Derivatives: Combined Experimental and Quantum Mechanical Analysis
作者:T. Jon Seiders、Kim K. Baldridge、Gunther H. Grube、Jay S. Siegel
DOI:10.1021/ja0019981
日期:2001.1.1
correlating the structure (bowl depth) and the energy of bowl inversion. Substituents placed in the peri positions are repulsive and flatten the bowl, thus causing a decrease in the bowl inversionbarrier. Conversely, annelation across the peri positions causes a deepening of the bowl, thus an increase in the bowl inversionbarrier. Barriers between 8.7 and 17.3 kcal/mol have been measured, and their