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A Kinetic Study on Ligand Substitution Reaction of N-Cyclohexyl-2-pyrrolidone for Triphenylphosphine in Trichlorooxorhenium (V) Complex
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- Koshino Nobuyoshi
- Research Laboratory for Nuclear Reactors, Tokyo Institute of Technology
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- Usui Sanae
- Research Laboratory for Nuclear Reactors, Tokyo Institute of Technology
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- Iwai Yoshio
- Seikei University
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- Varga Tamás R.
- Szent Istvan University
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- Chowdhury Shubhamoy
- Research Laboratory for Nuclear Reactors, Tokyo Institute of Technology
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- Bényei Attila C.
- University of Debrecen
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- Iwamura Munetaka
- Seikei University
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Description
The crystal structure of the Re0Cl3 (PPh3) (NCP) (PPh3=triphenylphosphine and NCP=N-cyclohexy1-2-pyrrolidone) complex was determined by a single-crystal X-ray diffraction method. It was found that NCP coordinates to the trans-position of the oxo group, Re=O, and that the Re (V) center is in a distorted octahedral geometry. The equilibrium reaction of ReOCl3 (PPh3) 2 + NCP ↔ ReOCl3 (PPh3) (NCP) + PPh3 was examined, and its equilibrium constant was determined as 0.33±0.1 in CH2Cl2 at 25°C. Kinetic studies were carried out for the forward and backward reactions, and revealed that the rate determining steps for the both reactions are dissociation of the coordinated ligand from the Re center. Taking into account of geometrical isomers of the ReOCl3 (PPh3) 2 complex, a reaction mechanism was proposed.
Journal
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- Journal of Nuclear and Radiochemical Sciences
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Journal of Nuclear and Radiochemical Sciences 6 (3), 161-164, 2005
The Japan Society of Nuclear and Radiochemical Sciences
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Details 詳細情報について
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- CRID
- 1390282679457525120
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- NII Article ID
- 10025719285
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- NII Book ID
- AA11948402
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- COI
- 1:CAS:528:DC%2BD28XjtFSjurk%3D
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- ISSN
- 18835813
- 13454749
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- Text Lang
- en
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- Data Source
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- JaLC
- Crossref
- CiNii Articles
- OpenAIRE
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- Abstract License Flag
- Disallowed