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3answers
45 views

what is the simple enantiomer in the powder form that one can get?

I want to do some experiments on enantiomers. As it involves more calculations of potential energy surfaces, I would like to do this experiment on a simple enantiomer. For example CHBrClF. But this is ...
2
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2answers
520 views

Why are allenes chiral?

How is this molecule chiral? $(Br)HC=C=CH(Cl)$ My thoughts: I know that chiral carbons have different groups attached to it. Here the end carbons have two different groups and a double bond. But, ...
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1answer
56 views

Liquid crystal current flow

Sorry, maybe some terms used in the question are not correct and may be this is a trivial question, but I'm not a chemist I am a computer scientist. In a liquid crystal cell used for LCD the ...
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2answers
168 views

Why only chiral molecules rotate plane polarized light and how does it rotate light?

I have learnt that only chiral or unsymmetrical molecules can rotate plane polarized light. But, why is it so? And how can molecules rotate plane polarized light or what does it actually mean by ...
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1answer
153 views

Molecular chirality and optical rotation

Why does having molecular chirality result in optical rotation? The dissymetry or chirality of molecules translates to the rotation of plane polarized light, the magnitude and direction depending on ...
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1answer
111 views

Racemization of biphenyl compounds

How does the effect of heat and effect of substituents affect racemization of biphenyl compounds?
2
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0answers
39 views

How would you change the chirality of a compound such that (S,R) becomes (S,S)?

How would you change the chirality of a compound such that (S,R) becomes (S,S)? That is how would you synthesise a compound from its diastereomer?
4
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1answer
427 views

If I have a chiral substrate, should I always assume that both enantiomers are present?

Considering the Sn1 reaction of (S)-2,3-dimethyl-3-pentanol, knowing that this molecule has a chiral carbon, should I always assume that both enantiomers are present, and therefore the products of a ...
4
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1answer
4k views

What does the “D” group represent on a chiral center?

I am trying to figure out the configuration for this chiral carbon to answer a homework question, however they arbitrarily include a "D" group as shown in the image. My guess is that it is some higher ...
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1answer
122 views

Is there a simple way to get the circular dichroism of a molecule from it's structure?

Are there any heuristics to get the relative absorbtion of left and right circularly polarized light by a molecule from its molecular structure? Is it even possible to predict which polarization is ...