Linear free energy relationship of the energy of the CTTS transition of Halide ions with the solvatochromic parameter α
Document Type
Article
Publication Date
5-1989
Department
Department of Chemistry; Department of Chemical Engineering; Department of Mathematical Sciences
Abstract
A linear free energy relationship was found between vmax, the energy of the absorption maximum of chloride, bromide, or iodide ion in various solvents, and the α solvatochromic parameter which is a measure of the hydrogen bond donor ability of the solvent. The relationships are: for chloride, vmax=6.99α+50.16 kK; for bromide, vmax=5.52α+45.20 kK; for iodide, vmax=5.02α+40.33 kK. The correlation of vmax for iodide ion with α gave a larger correlation coefficient and smaller standard deviation than a correlation with the ET(30) parameter of Dimroth. From the values of vmax for iodide ion and the solvated electron in liquid ammonia at 25°C, these correlations indicate a preliminary value of 0.00 for the α parameter of liquid ammonia. This had not been reported before and is lower than expected from a general knowledge of the physical and chemical properties of liquid ammonia but is consistent with a more detailed consideration and recent gas phase measurements of hydrogen bond donor strength.
Publication Title
Journal of Solution Chemistry
Recommended Citation
Luehrs, D.,
Brown, R.,
&
Godbole, K.
(1989).
Linear free energy relationship of the energy of the CTTS transition of Halide ions with the solvatochromic parameter α.
Journal of Solution Chemistry,
18(5), 463-469.
http://doi.org/10.1007/BF00657333
Retrieved from: https://digitalcommons.mtu.edu/michigantech-p/4264