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Crystal and Molecular Structures of 3-Carboxypropyltriphenylphosphonium Diiodobromide |
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| Authors: | Kazheva O N Aleksandrov G G D'yachenko O A Chernov'yants M S Simonyan S S Lykova E O |
| Institution: | (1) Institute of Problems of Chemical Physics, Russian Academy of Sciences, Chernogolovka, Moscow oblast, 142432, Russia;(2) Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, Leninskii pr. 31, Moscow, 119991, Russia;(3) Rostov State University, pr. Stachki 194, Rostov-on-Don, 344104, Russia |
| Abstract: | Complexation in the 3-carboxypropyltriphenylphosphonium bromide–molecular iodine system in chloroform was studied. The maximum number of iodine molecules coordinated by 3-carboxypropyltriphenylphosphonium bromide was established by the spectrophotometric method using a function of the average-iodine number, and the stability constant of the complex was determined. The (C6H5)3P(CH2)3COOH]BrI2 diiodobromide was studied by X-ray diffraction analysis. The characteristic feature of the crystalline salt was the formation of dimer associates: anionic associates were formed due to the Br···Br intermolecular interactions and cationic associates were formed due to the O···H–O hydrogen bonds. The data obtained were correlated to the results of quantum-chemical calculations. |
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