Low-Frequency CH Stretch Vibrations of Free Alkoxide Ions
| Authors |
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|---|---|
| Publication date | 02-01-2017 |
| Journal | Angewandte Chemie, International Edition |
| Volume | Issue number | 56 | 1 |
| Pages (from-to) | 217-220 |
| Number of pages | 4 |
| Organisations |
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| Abstract | CH stretches in hydrocarbon cations often shift to lower frequencies relative to neutral molecules, because they do not have sufficient electrons to give every bond an electron pair. A parallel effect in negatively charged species has not been previously observed. Here we show that CH bond weakening occurs in alkoxide anions as a consequence of hyperconjugation. The reasoning differs somewhat from the case of positively charged ions, but the net effect is the same: to lower CH stretching frequencies by hundreds of wavenumbers. |
| Document type | Article |
| Note | With supplementary file |
| Language | English |
| Related publication | Low-Frequency CH Stretch Vibrations of Free Alkoxide Ions |
| Published at |
https://doi.org/10.1002/anie.201609437
(Final published version)
https://doi.org/10.1002/ange.201609437
(Other version)
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