Questions tagged [optical-isomerism]

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1answer
95 views

Is it correct to class these two compounds as enantiomers?

This question is from GRB Problems In Organic Chemistry For Jee Advanced. Identify the relation between these two compounds: (a) Homomers (b) Enantiomers (c) Diastereomers (d) Different compounds ...
3
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1answer
111 views

Why is 1,3-dimethyl-cyclohexane a meso compound?

So i was trying to find the plane of symmetry in 1,3-dimethyl-cyclohexane in chair conformation, but then i realised the plane is present only at a particular orientation [see figure]. So why do we ...
0
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1answer
60 views

Racemization of hydrocarbon in presence of AlCl3

Our textbook mentioned that the compound in the diagram racemizes in presence of $\ce{AlCl3}$, but it didn't explain anything. Any help regarding the mechanism of the reaction would be appreciated.
0
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1answer
35 views

Natural Sources for S-(-)-Limonene?

I'm interested in developing an undergrad organic lab that delves deeper into distillation/extraction, optical rotation and enantiomers. Our lab currently does a steam distillation extracting R-(+)-...
-3
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1answer
29 views

Why total stereoisomers is 1 even if no geometrical isomers and optical-isomers are present [closed]

Let's for example take the complex structure type $\ce{MA_6}$, What will be the Total number of Stereo-isomers (=[Geometrical-isomers]+[optical-isomers]). My effort was that There will be no G.I and ...
0
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1answer
81 views

Is a tetrahedral complex with two symmetric bidentate ligands optically active?

If the shape of of a complex $\ce{M(AA)2}$ (with $\ce{AA}$, a bidentate ligand) is tetrahedral, then is it optically active? Currently I know that it is optically inactive, but I want to know the ...
5
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1answer
378 views

The total number of stereoisomers of 1,2-dibromo-3,4-dichlorocyclobutane

I tried writing all the geometrical isomers for 1,2-dibromo-3,4-dichlorocyclobutane, and then saw if they were optical or not. And I am getting the answer as 10: However, the given answer is 8. I can'...
3
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1answer
104 views

Confusion in R/S Nomenclature and Chirality [closed]

I have many confusions regarding optical isomerism: What is the use of the R/S nomenclature? I understand that it is used to distinguish between the different spacial arrangements that are possible ...
4
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1answer
65 views

Effect of R/S configuration on reactions not involving the stereocentre

An exam question involved the following reaction - + forms Both reactants (2-methylbutanoic acid and 2-methylbutanamine) are optically active. The question used pure R-enantiomer of the acid, and a ...