|
NISCAIR ONLINE PERIODICALS REPOSITORY (NOPR) >
NISCAIR PUBLICATIONS >
Research Journals >
Indian Journal of Chemistry -Section A (IJC-A) >
IJC-A Vol.50A [2011] >
IJC-A Vol.50A(09-10) [September-October 2011] >
| Title: | Isolation and characterization of two isomeric arylamine substituted triazinium salts. Studies of intramolecular charge-transfer and electrochromic properties |
| Authors: | Sinan, Mominul
Ghosh, Pradip
Goswami, Sreebrata |
| Keywords: | Positional isomers
Donor-acceptor molecules
Perchlorates
Triazinium cations
X-ray structures
Redox properties
Electrochromic properties |
| Issue Date: | Sep-2011 |
| Publisher: | NISCAIR-CSIR, India |
| Abstract: | Reaction of
9,10-diaza-4a-azonia-phenanthrene perchlorate ([1]ClO4) with para-toludine
in acetonitrile at room temperature affords isomeric triazinium compounds (para isomer, [2a]ClO4, 6-p-tolylamino-9,10-diaza-4a-azonia-phenanthrene
perchlorate and ortho isomer, [2b]ClO4, 8-p-tolylamino-9,10-diaza-4a-azonia-phenanthrene
perchlorate) in moderate yields. X-ray structures of the compounds are
reported. The isolated compounds have been characterized by different
spectroscopic techniques. The compounds
belong to the category of ‘donor-acceptor molecules’ and absorb strongly in the
visible region. Positioning effect on intramolecular charge transfer
process on these isomeric compounds has been investigated. Comparative studies
of the spectral, redox and structural properties of the reference isomeric
compounds are discussed. Notably the colour of the para isomer (red) is distinctly different than that of the ortho isomer (blue). These compounds
undergo chemically reversible reductions producing azo based free radicals.
Electrochromic properties of the compounds are investigated. |
| Page(s): | 1273-1280 |
| CC License: |  CC Attribution-Noncommercial-No Derivative Works 2.5 India |
| ISSN: | 0975-0975(Online); 0376-4710(Print) |
| Source: | IJC-A Vol.50A(09-10) [September-October 2011]
|
|
