Timeline for Why No Change in Polarizability in Asymmetric Stretch?
Current License: CC BY-SA 4.0
15 events
| when toggle format | what | by | license | comment | |
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| S Jan 14, 2021 at 3:52 | history | bounty ended | Karsten♦ | ||
| S Jan 14, 2021 at 3:52 | history | notice removed | Karsten♦ | ||
| Jan 10, 2021 at 4:24 | comment | added | Karsten♦ | Related: chem.libretexts.org/Bookshelves/… | |
| Jan 10, 2021 at 2:26 | history | edited | ron | CC BY-SA 4.0 |
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| Jan 10, 2021 at 2:25 | answer | added | ron | timeline score: 4 | |
| Jan 9, 2021 at 23:06 | comment | added | ron | These earlier answers may be helpful: How can I deduce the linearity of XeF2 from the IR spectrum? and Is carbon dioxide IR inactive?. | |
| Jan 9, 2021 at 23:03 | comment | added | ron | @Karl You don't need a dipole moment, you just need a change in the dipole moment. | |
| Jan 8, 2021 at 12:00 | history | edited | Karsten♦ |
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| S Jan 8, 2021 at 11:21 | history | bounty started | Karsten♦ | ||
| S Jan 8, 2021 at 11:21 | history | notice added | Karsten♦ | Draw attention | |
| Dec 10, 2020 at 5:58 | comment | added | Jtl | the shape oscillates in left and right, how can they be same shape? And why would same shape not cause change in polarizability, hope someone can Answer. | |
| Dec 9, 2020 at 16:38 | comment | added | porphyrin | In the asymmetric stretch the molecule retains the same shape because as one extends the other contracts and vice versa. | |
| Dec 9, 2020 at 8:27 | comment | added | Karl | The effect on both sides levels out, mostly. Remember that some selection rules are stronger than others: Spin must be retained, and if you just have no dipole moment, you get no IR interaction. Oh, remember you have to look at this from the view of an electromagnetic wavelenght that is a thousand times as large. | |
| Dec 9, 2020 at 8:24 | comment | added | Poutnik | Is possible the polarizability change requirement applies not to particular bonds, but to the whole molecule, with the opposite bond effects nullifying each other ? | |
| Dec 9, 2020 at 6:12 | history | asked | Jtl | CC BY-SA 4.0 |