Benzene and Alkyl Benzene - Result Question 16
####20. A solution of $(+)$-2-chloro-2-phenylethane in toluene racemises slowly in the presence of small amount of $SbCl _5$, due to the formation of
$(1999,2 M)$
(a) carbanion
(b) carbene
(c) free-radical
(d) carbocation