First slide

Diborane

Question

Methylation of diborane gives [Me = methyl group]

Moderate

A

B₂(Me)₆
B

B₂H(Me)₅
C

B₂H₂(Me)₄
D

All the above

Solution

${B_2}{H_6} + 4C{H_3}I\xrightarrow{{Methylation}}{B_2}{H_2}{[C{H_3}]_4} + 4HI$
OR
During methylation reaction only four terminal hydrogens are replaced by methyl groups but not bridged hydrogens.This reaction indicates diborane contains four terminal hydrogens and two bridged hydrogens.

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