Questions tagged [isomers]
Compounds that have identical molecular formula but different chemical structure.
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What exactly does 'isomerism' mean?
Today, I was confronted with this question -
Is 2-methylpenten-3-one an isomer of 5-hexen-1-ol?
Some people say yes; while some say otherwise.
I'll put forward the logic on both sides.
The side of ...
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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 (...
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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 ...
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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 "...
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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 ...
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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 ...
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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 ...
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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 ...
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Why does polar solvents favor Ketonization and non-polar solvents favor Enolization? [duplicate]
I was just studying isomerism, when I came across this statement for keto-enol tautomerism:
A polar solvent favors ketonization, while a non-polar solvent favors enolization.
And I just can't get my ...
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Isomers of Pentaaminechlorocobalt(III) chloride
What kind of isomers does $\ce{[Co(NH3)5Cl]Cl2}$ exhibit?
I can rule out geometrical and optical due to there being $\ce{5 NH3}$ ligands which central metal atom cannot have different positions of $\...
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Why is the 'cis-1,3-dimethylcyclobutane' conformation of both methyl groups at the bottom more unstable than both at the top?
I'm having trouble understanding why both methyl groups on top of the ring is a more stable conformation than both at the bottom of the ring.
I found a reasoning that says the steric strain between ...
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Are conformational isomers diasteromers?
I am currently struggling on seeing where exactly conformational isomers fit within stereochemistry & how (and whether) they are a subset of diasteromers. I've seen potentially conflicting ...
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Is neo-octane possible and if yes, what is its structure? [closed]
I know iso-octane is an exception and is 2,2,4-Trimethylpentane which intuitively contains both iso and Neo groups. But then what is the structure of neo-octane or even is it possible?
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To what extent should a question such as: "how many enantiomers are there?" take geometric isomerism into account?
Pretty simple question here.
How many enantiomers are there for the structure $\ce{CH3CH=CHCH(CH3)CH2CH3}$?
On the one hand, there is just one chiral centre so one would suggest $2$. On the other ...
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Converting Quartz data from one (P3221) space group to another (P3121)
For my studies, I’ve done a lot of work on coal fly ash QXRD QPA on TOPAS which has been a fun and interesting challenge. Apart from theory reviewing, a lot of my learning so far has come from a prior ...
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