IIT JEE , AIEEE Forum - Chemistry , Organic Chemistry - i optical isomeres why assymmetric carbon atom is used there is 1 exception which is that?

dev_22oct

allenes are optically active bt they are devoid of chiral centre.

in allenes the central carbon is sp bonded. the remaining two p orbitals are perpendicular to each other , and each overlaps the p orbital of one adjacent carbon atom forcing the two remaining bonds of each carbon into perpendicular planes therefore the allenes of type ABC=C=ABC(A

B) are chiral.

and thus allenes exist as entiomer without having chiral centre

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