Kinetic Investigation of the Reaction between Triphenylphosphine, Dialkyl Acetylenedicarboxylate, and Carbazole by the UV Spectrophotometry Technique
| Autor: | Majid Moradian, Sayyed Mostafa Habibi Khorassani, Malek Taher Maghsoodlou, Hamid Reza Dasmeh, Hosein Roohi, Ali Ebrahimi, Mohammad Zakarianezhad |
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| Rok vydání: | 2006 |
| Předmět: |
chemistry.chemical_classification
Arrhenius equation Carbazole Acetylenedicarboxylate Organic Chemistry Activation energy Photochemistry Kinetic energy Biochemistry Inorganic Chemistry chemistry.chemical_compound symbols.namesake Reaction rate constant chemistry symbols Physical chemistry Triphenylphosphine Alkyl |
| Zdroj: | Phosphorus, Sulfur, and Silicon and the Related Elements. 181:1103-1115 |
| ISSN: | 1563-5325 1042-6507 |
| DOI: | 10.1080/10426500500326446 |
| Popis: | The major objectives of the work undertaken were to carry out kinetic studies of the reaction between triphenylphosphine and dialkyl acetylenedicarboxylate in the presence of strong NH-acids, such as carbazole. To determine the kinetic parameters of the reaction, it was monitored by the UV spectrophotometer technique. The values of the second order rate constant (k 2 ) were automatically calculated using standard equations within the program when the second order fits of the mentioned reactions were automatically drawn by the software associated with a Cary UV spectrophotometer model Bio-300 at an appropriate wavelength. At the temperature range studied, the dependence of the second order rate constant (Ln k) on reciprocal temperature was in agreement with the Arrhenius equation. This provided the relevant plots to calculate the activation energy of all reactions. Furthermore, useful information was obtained from studies of the effect of solvent and different alkyl groups within the dialkyl acetylenedicar... |
| Databáze: | OpenAIRE |
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