In 2017,Bogomolov, Alexandr S.; Goldort, Veniamin G.; Kochubei, Sergei A.; Baklanov, Alexey V. published 《Photodissociation of van der Waals complexes of iodine X-I2 (X = I2, C2H4) via charge-transfer state: velocity map imaging investigation》.Journal of Chemical Physics published the findings.Application of 624-73-7 The information in the text is summarized as follows:
The photodissociation of van der Waals complexes of iodine X-I2 (X = I2, C2H4) excited via Charge-Transfer (CT) band has been studied with the velocity map imaging technique. Photodissociation of both complexes gives rise to translationally “”hot”” mol. iodine I2 via channels differing by kinetic energy and angular distribution of the recoil directions. These measured characteristics together with the anal. of the model potential energy surface for these complexes allow us to infer the back-electron-transfer (BET) in the CT state to be a source of observed photodissociation channels and to make conclusions on the location of conical intersections where the BET process takes place. The BET process is concluded to provide an I2 mol. in the electronic ground state with moderate vibrational excitation as well as X mol. in the electronic excited state. In the case of X = I2, the BET process converts anion I2- of the CT state into the neutral I2 in the repulsive excited electronic state which then dissociates promptly giving rise to a pair of I atoms in the fine states 2P1/2. In the case of C2H4-I2, the C2H4 mols. appear in the triplet T1 electronic state. Conical intersection for corresponding BET process becomes energetically accessible after partial twisting of C2H4+ frame in the excited CT state of complex. The C2H4(T)-I2 complex gives rise to triplet ethylene as well as singlet ethylene via the T-S conversion. (c) 2017 American Institute of Physics. After reading the article, we found that the author used 1,2-Diiodoethane(cas: 624-73-7Application of 624-73-7)
1,2-Diiodoethane(cas: 624-73-7) is one of organic iodides. The carbon-iodine bond is weaker than other carbon-halogen bonds due to the poor electronegative nature of the iodine atom. In general, organic iodides are light-sensitive and turn yellow during storage, owing to the formation of iodine. Organic iodides can be alkyl, alkenyl, or alkynyl, and all of them are very reactive toward with many kinds of nucleophiles.Application of 624-73-7
Referemce:
Iodide – Wikipedia,
Iodide – an overview | ScienceDirect Topics – ScienceDirect.com