The interaction of pyrazolones as a donor with iodine as an acceptor has been studied using spectrophotometric and constant activity methods. The results indicate the formation of 1:1 molecular complex species of n-s\* type. The equilibrium constants of these complexes were determined at different t
Iodine—acetophenone charge-transfer complexes
✍ Scribed by R.M. Medina; J.A. García-Vázquez; M.J. Macazaga; J.R. Masaguer
- Publisher
- Elsevier Science
- Year
- 1984
- Tongue
- English
- Weight
- 451 KB
- Volume
- 40
- Category
- Article
- ISSN
- 1386-1425
No coin nor oath required. For personal study only.
✦ Synopsis
By
using a spectrophotometric method, equilibrium constants, K, for the interaction of iodine with acetophenone (I), Cbromo-acetophenone (II), 4thloro-acetophenone (III), 4-methyl-acetophenone (IV) and 4-methoxy-acetophenone (V) have been determined at 25°C in cyclohexane. These values are discussed and interpreted by using electronic and steric effects. On the other hand, various spectral constants of the shift acceptor bands have been determined. The results are interpreted by using Mulliken's theory for charge-transfer complexes.
📜 SIMILAR VOLUMES
The conductivity of the freshly prepared yellow adduct of phenothiazine and iodine in acetonitrile is due in about equal parts to 2: 3 and 1: 2 complexes at 20°C. In CH,CN the complexes are completely dissociated\_ The equivalent conductivity remains constant, independent of concentration, at 130 mh
Femtosecond spectroscopy is used to investigate the ultrafast photochemistry of the I,: arene charge-transfer complex that occurs upon excitation into the charge-transfer state. We find that the photo-excited complex branches into two different channels within 25 fs. The dominant channel involves br
Femtosecond transient absorption studies of charge-transfer complexes of 12 with hexamethylbenzene have been performed in a series of noncomplexing solvents. Anisotropy measurements of the bleach of the charge-transfer absorption band indicate that the geometry and electronic structure of the comple