期刊
ORGANIC CHEMISTRY FRONTIERS
卷 10, 期 22, 页码 5601-5609出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/d3qo01131c
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This study reports on the expedient synthesis, spectroscopic analysis, solid state structural proof, and theoretical study of structural variants of strongly aromatic (antiaromatic) meso-meso 1,3-bis(E-vinyl)azulene bridged (nonbridged) tetrathiaoctaphyrins exhibiting strong NIR absorption. Thorough DFT studies and various analyses have been carried out to explain the nature and origin of the major [34 pi]/[36 pi] single-conjugated Huckel aromaticity (antiaromaticity) in detail.
The expedient syntheses, spectroscopic analysis, solid state structural proof and theoretical study of structural variants of strongly aromatic(antiaromatic) meso-meso 1,3-bis(E-vinyl)azulene bridged(nonbridged) tetrathiaoctaphyrins exhibiting strong NIR absorption are reported. The lack of participation of the 1,3-bis(E-vinyl)azulene internal bridge in the global pi-conjugated network of tetrathiaoctaphyrins led to the loss of effective dual macrocyclic conjugation pathways, which has been fully supported by thorough DFT studies. AICD, NICS, HOMA, MCI, AV1245 index, AVmin, WBI and ELF analyses have been carried out to explain the nature and origin of the major [34 pi]/[36 pi] single-conjugated Huckel aromaticity(antiaromaticity) in detail for all the three octaphyrins with(without) the meso-meso 1,3-bis(E-vinyl)azulene bridge.
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