Infrared and EPR spectroscopic study of open-shell reactive intermediates: F + NH₃ in solid argon
Vernadsky National Library of Ukraine
Переглянути архів Інформація| Поле | Співвідношення | |
| Title |
Infrared and EPR spectroscopic study of open-shell reactive intermediates: F + NH₃ in solid argon
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| Creator |
Misochko, Eugenii Ya.
Goldschleger, Ilya U. Akimov, Alexander V. Wight, Charles A. |
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| Subject |
Low-Temperature Physics and Chemistry in Cryomatrice
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| Description |
Mobile F atoms react with NH₃ molecules in an argon matrix at temperatures T=7–35 K. The open-shell NH₂–HF complex was observed by EPR and infrared spectroscopies as the main product of this reaction. The hyperfine constants of the NH₂–HF complex aN=1.20 mT, aH=2.40 mT, and aF=0.70 mT were determined from the EPR spectra of samples using NH₃, ¹⁵NH₃ and ND₃ isotopomers. Prominent features of the infrared spectrum of NH₂–HF are a strongly red-shifted HF stretching mode (Δv≈−720 cm−1(Δv≈−720 cm⁻¹ relative to that for isolated HF) and strong absorptions at 791 and 798 cm−1798 cm⁻¹ attributed to HF librational modes in the complex. Quantum chemistry calculations reveal that the hydrogen-bonded NH₂–HF complex has a planar C₂v structure and a binding energy of 51 kJ/mol. Calculated hyperfine constants and vibrational frequencies of the complex are in good agreement with those observed in the EPR and IR experiments.
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| Date |
2018-01-17T19:58:03Z
2018-01-17T19:58:03Z 2000 |
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| Type |
Article
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| Identifier |
Infrared and EPR spectroscopic study of open-shell reactive intermediates: F + NH₃ in solid argon / Eugenii Ya. Misochko, Ilya U. Goldschleger, Alexander V. Akimov, Charles A. Wight // Физика низких температур. — 2000. — Т. 26, № 9-10. — С. 981-991. — Бібліогр.: 43 назв. — англ.
0132-6414 PACS: 82.30.Cf http://dspace.nbuv.gov.ua/handle/123456789/129220 |
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| Language |
en
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| Relation |
Физика низких температур
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| Publisher |
Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України
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