Structural aspects of the aromaticity of cyclic π-electron systems with BN bonds
Izabela Madura , Tadeusz M. Krygowski , Michal K. Cyrański
AbstractAn extension of the HOMA model and Bird's I6 model for systems with BN bonds is given. Analysis of the aromatic character of 11 pairs of borazine derivatives and their benzene analogues is done based on Cambridge Structural Database (CSD) release using HOMA and I6 indices. Borazine derivatives exhibit less aromatic character than their benzene analogues and are much less sensitive to the chemical and topological effects from the environment of the rings in question. In contrast to cyclooctatetraene, 1,3,5,7-tetra-t-butyl-2,4,6,8-tetramethyl-1,3,5,7,2,4,6,8-tetraazatetraborocine does not exhibit antiaromatic character.
|Journal series||Tetrahedron, ISSN 0040-4020|
|Publication indicators||: 2006 = 2.817 (2) - 2007=2.854 (5)|
|Citation count*||41 (2015-04-02)|
* presented citation count is obtained through Internet information analysis and it is close to the number calculated by the Publish or Perish system.