All Questions
Tagged with symmetry molecular-structure
22
questions
4
votes
1
answer
217
views
Breaking degeneracy in phosphorus pentachloride
Recently, in a class discussion, the following point was brought up:
Although the axial and equatorial bond lengths in $\ce {PCl5}$ are inequivalent, when we consider the time-averaged $\ce {P-Cl}$...
- 10.7k
15
votes
1
answer
241
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Are there any non-Jahn-Teller type distortions?
My question is essentially, if ANY gradual type of deviation from a higher possible symmetric arrangement of the nuclei in a molecule is covered by the Jahn-Teller model.
More specifically I have in ...
1
vote
1
answer
488
views
What is the criteria for determining structure of a molecule?
Does the shape of the molecule depends on symmetry?
Why is the shape of dinitrogen trioxide ($\ce{N2O3}$):
(oxidation number of nitrogen atoms: +4, +2)
Instead of my proposal, which is much more ...
- 1,232
-1
votes
2
answers
1k
views
Relation between molecule symmetry and crystal symmetry
How much is crystal symmetry dependent on molecule symmetry?
Can one make any kind of inferences on the symmetry of the molecule looking at the symmetry of its crystal or the other way around?
- 196
2
votes
0
answers
119
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Are the $+\leftrightarrow+$ and $-\leftrightarrow-$ methanol rotational transitions dipole-allowed?
I am quite confused about the origin and justification of the rotational selection rules of methanol, and I would appreciate any help or references. As far as I understand, there are three irreducible ...
user37085
6
votes
1
answer
6k
views
Why doesn't 1,3-dichloro-2,4-dimethylcyclobutane have a plane of symmetry?
In (1R,2R,3S,4S)-1,3-dichloro-2,4-dimethylcyclobutane, are the blue lines not planes of symmetry?
My book says it has a centre of symmetry, but not a plane of symmetry. But if I took a cut ...
- 2,853
2
votes
2
answers
3k
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Dipole moment of symmetrical molecules
While studying dipole moment in organic chemistry, I got stuck at a particular statement written in the book :
Symmetrical molecules without lone pairs of electrons will have $\mu = 0.$
The main ...
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