Probing the aromaticity in 2,3-pyrido-annulated N-heterocyclic carbene and its heavier analogues |
| |
| Institution: | 1. A. N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, 119991 Moscow, Russian Federation;2. N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, 119991 Moscow, Russian Federation |
| |
| Abstract: | The aromaticity in 2,3-pyrido-annulated 1,3,2λ2-diazatetroles C5H3N(NR)2EII (EII = C, Si, Ge, Sn, Pb) was studied using a set of experimental and calculated criteria: UV-VIS, Raman, ISE, NICS, GIMIC and EDDB. The data obtained indicate either a slight decrease in aromaticity (NICS, GIMIC, ISE methods) or equal aromaticity (UV-VIS, ISE methods) compared to benzo-annulated analogues C6H4(NR)2E. The π-aromaticity increases down the group from Si to Pb. |
| |
| Keywords: | tetrylenes heavier carbene analogues aromaticity Raman spectroscopy electron density of delocalized bonds gauge- including magnetically induced currents |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
