Amilan Jose, D. ; Kar, Prasenjit ; Koley, Debasis ; Ganguly, Bishwajit ; Thiel, Walter ; Ghosh, Hirendra N. ; Das, Amitava (2007) Phenol-and catechol-based ruthenium (II) polypyridyl complexes as colorimetric sensors for fluoride ions Inorganic Chemistry, 46 (14). pp. 5576-5584. ISSN 0020-1669
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Official URL: http://pubs.acs.org/doi/abs/10.1021/ic070165%2B
Related URL: http://dx.doi.org/10.1021/ic070165+
Abstract
We report two ruthenium(II) polypyridyl complexes with pendant phenol/catechol functionality that act as colorimetric sensors for fluoride ions. Experiments have revealed that hydrogen bond formation occurs with a slight excess of fluoride ion. However, in higher [F-], deprotonation of the O-H functionality resulted. Time-dependent (TD-DFT) calculations at the B3LYP/LANL2DZ level have shown that new bands appear at longer wavelengths upon complexation with fluoride ions. These are of mixed character, MLCT (dΠ(Ru) → Π*(L1/bpy)), and intra- and interligand [Π(L1) → Π*(bpy) and Π(L1) → Π*(L1)] transitions. These complexes also act as sensors for fluoride ions in solvent-water mixtures.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to American Chemical Society. |
| ID Code: | 59944 |
| Deposited On: | 08 Sep 2011 10:21 |
| Last Modified: | 08 Sep 2011 10:21 |
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