I understand also that for a compound to be optically energetic, it requirements to be chiral and also not have actually any planes of symmeattempt. I know 1 is symmetric, however I am perplexed about 2 and also 3.

You are watching: Which of the following are optically active?

I am quoting from IUPAC GOLD book$^1$ .

Meso-compound : A term for the achiral member(s) of a collection of diastereoisomers which likewise consists of one or more chiral members. For example:

Tbelow is a airplane of symmetry in the examples offered in IUPAC GOLD book (displayed in colour) .

Molecule $ce3$ additionally has a airplane of symmeattempt as displayed in the figure listed below. This renders it achiral.

Molecule $ce2$ does not possess airplane of symmeattempt , and therefore chiral.

In conclusion , molecule $ce3$ is achiral and molecule $ce2$ is chiral.

Refereneces

$^1$ : IUPAC. Compendium of Chemical Terminology, 2nd ed. (the "Gold Book"). Compiled by A. D. McNaught and A. Wilkinboy. Blackwell Scientific Publications, Oxford (1997). Online variation (2019-) created by S. J. Chalk. ISBN 0-9678550-9-8. https://doi.org/10.1351/goldbook.

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edited Jul 30 "19 at 3:40
answered Jul 30 "19 at 3:27

Chakravarthy KalyanChakravarthy Kalyan
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