Questions tagged [stereochemistry]
Applicable to questions about the spatial arrangement of atoms in a molecule and how they affect its physical or chemical properties.
840
questions
0
votes
0
answers
45
views
Why is α-truxillic acid not meso compound? [duplicate]
I know that for a compound to be meso it should be optically inactive and should have multiple chiral centres but in case of α-truxillic acid, it is optically inactive due to centre of symmetry being ...
- 33
-1
votes
1
answer
131
views
Can you have a diastereomer with one chiral center? If yes, give me example [closed]
If we say yes, how? Because if the compound have 1 chiral carbon, thus if it is S and another compound is R thus is mirror imagested
- 15
3
votes
2
answers
96
views
Does 1-chloro-4-(chloromethylidene)cyclohexane show geometrical isomerism?
Would this compound show geometrical isomerism, or GI for short?
There certainly wouldn't be any restricted rotation for any atoms in the ring, as for the chiral carbon having chlorine and hydrogen (...
- 41
8
votes
2
answers
541
views
Can O-alkyl sulphoxides be chiral?
Consider the two molecules below.
A chemical drawing software that I won't name says that the one on the left is chiral with configuration R at sulphur, whereas the one on the right isn't.
I checked ...
- 779
0
votes
1
answer
96
views
Why do we use cis/trans for 1,4-dichlorocyclohexane, but R/S nomenclature for its 1,3 isomers?
1,4-dichlorocyclohexane has two isomers, and 1,3-dichlorocyclohexane has three:
Looking at the substituted carbon, the reason for the isomers is the same: either the chlorine points up or it points ...
- 41.3k
6
votes
1
answer
95
views
Optical activity in tritiated cyclobutane
How would we determine the optical activity in a compound as such:
The biggest difficulty I'm having is determining the R-S configuration as that will determine whether the pair are enantiomers or ...
- 429
5
votes
2
answers
585
views
Geometrical isomerism in 1-(chloromethylidene)-3,5-dimethylcyclohexane
Will this compound exhibit geometrical isomerism?
This question was asked in JEE (Mains) 2020, which is an entrance exam held in India annually. The official answer given for this question was "...
- 131
-1
votes
1
answer
66
views
How exactly are mirror images of molecules rotated to determine enantiomeric pair?
I know there are many similar questions to this but none could clear my confusion over how exactly the mirrored molecules is rotated i.e on which axis it is rotated to superpose with the original ...
- 127
7
votes
2
answers
727
views
Is there a plane of symmetry in [Ma3b2c]?
We have been taught to look for plane of symmetries in inorganic complexes. If there is a plane of symmetry then the complex is optically inactive, otherwise it is optically active. In this particular ...
- 127
0
votes
1
answer
96
views
Are these stereoisomers considered geometrical isomers?
I came across this compound in the Black Book of Organic Chemistry by Ashish Mishra. The question asked whether this compound could show geometrical isomers.
Now, I know the compound has the ...
- 199
0
votes
0
answers
34
views
Is the compound optically active? [duplicate]
My work -
The compound seems to have a plane of symmetry(POS)(The plane of the compound itself seems to be the POS)
Because- all carbon atoms in the benzene ring, the - COOH, the C=C, are all SP2 ...
- 27
0
votes
1
answer
66
views
Which of these molecules have stereoisomers?
Problem:
Which of these molecules have stereoisomers?
Solution:
(The molecules with a red X beside them are the ones with stereoisomers.)
Question:
What is the method used to identify which molecules ...
- 133
6
votes
1
answer
314
views
What is the number of different compounds formed from the monochlorination of cis-1,2-dimethyl cyclopentane?
I encountered this question in the Black Book of Organic Chemistry by Ashish Mishra while preparing for a college entrance exam.
According to the answer key the answer is 12. I have only managed to ...
- 199
4
votes
1
answer
255
views
Why is cyclooctene the smallest cycloalkene to have cis-trans isomerism?
What prevents cis and trans isomers from existing in smaller cycloalkenes, for example, cyclohexenes for more than a short period of time?
- 109
2
votes
1
answer
121
views
How the tertiary carbons of cyclohexane are assigned the stereo-descriptors (r)?
We assign the stereodescriptors R and S for chiral centres - carbons and other atoms, as per the set of sequence rules (CIP rules).
The pseudochiral centres are given the descriptors (r) & (s) ...
- 759