Tag: study of diborane

Questions Related to study of diborane

A compound $X$, of boron reacts with $NH _3$ on heating to give another compound $Y$ which is called inorganic benzene. The compound $X$ can be prepared by treating $BF _3$ with lithium aluminum hydride. The compounds $X$ and $Y$ are represented by formula:

chemistry the p-block elements - group 13 study of diborane some important compounds of boron study of boron

  1. $B _2H _6, B _3N _3H _6$

  2. $B _2O _3, B _3N _3H _6$

  3. $BF _3, B _3N _3H _6$

  4. $B _3N _3H _6, B _2H _6$

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Correct Option: A
Explanation:
A compound $X$, of boron, reacts with $N{H} _{3}$ on heating to give another compound $Y$ which is called inorganic benzene.
$\underset{X \; (Diborane)}{3{B} _{2}{H} _{6}} + 6N{H} _{3} \longrightarrow 3{[B{H} _{2}{(N{H} _{3})} _{2}]}^{+}{[B{H} _{4}]}^{-} \xrightarrow{heat} \underset{\text{Y (Borazole/Inorganic Benzene)}}{2{B} _{3}{N} _{3}{H} _{6}} + 12{H} _{2}$
$4B{F} _{3} + 3LiAl{H} _{4} \longrightarrow \underset{X}{2{B} _{2}{H} _{6}} +3LiF + 3Al{F} _{3}$

The styx number for $B _2H _6$ is:

chemistry the p-block elements - group 13 study of diborane some important compounds of boron study of boron

  1. $2012$

  2. $2222$

  3. $2002$

  4. $2102$

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Correct Option: C

Diborane undergoes cleavage and gives aduct with

chemistry the p-block elements - group 13 study of diborane some important compounds of boron study of boron

  1. CO

  2. $ H _2O $

  3. $ N(Me) _3 $

  4. $ NH _3 $

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Correct Option: D