Select the correct statement(s) about carbene.
A. It is obtained by photolysis of diazomethane or ketene.
B. It can react with alkene to form cycloalkane.
C. Singlet carbene act as a free radical.
D. It can exist in singlet or triplet state.
E. Triplet carbene have a pair of electrons in a non-bonding 
-orbital.
Choose the correct answer from the options given below.
Text Solution
Verified by ExpertsB
Among the given statements, only A, B and D are correct while C and E are incorrect.
Their correct form are
• Singlet carbene act as a carbocation.
• Triplet carbene have two unpaired electrons, one in each of 
and a 
-orbital.
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