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Diborane

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A compound of boron X reacts at $200^{\circ} C$ temperature with $N H_{3}$ to give another compound $Y$ which is called as inorganic benzene. The compound $Y$ is a colourless liquid and is highly sensitive. Its melting point is $- 57^{\circ} C$ . The compound $X$ with excess $N H_{3}$ and at a still higher temperature gives boron nitride ${(B N)}_{n}$ . The compounds $X$ and $Y$ respectively are:

A

B H_{3} and B_{2} H_{6}

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B

N a B H_{4} and C_{6} H_{6}

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C

B_{2} H_{6} and B_{3} N_{3} H_{6}

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D

B_{4} C_{3} and C_{6} H_{6}

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Solution

The correct option is C $B_{2} H_{6} and B_{3} N_{3} H_{6}$
The reactions involved are
$3 B_{2} H_{6} (X) + 6 N H_{3} ⟶ 2 B_{3} N_{3} H_{6} (Y) + 12 H_{2}$
$B_{2} H_{6} + N H_{3} (e x c e s s) ⟶ (B N)_{n} + H_{2}$

Y is borazole, which is isosteric and isoelectronic with benzene and hence called as Inorganic benzene.

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Similar questions

Q. A compound of boron X reacts at

200^{\circ} C

temperature with

N H_{3}

to give another compound

Y

which is called as inorganic benzene. The compound

Y

is a colourless liquid and is highly sensitive. Its melting point is

- 57^{\circ} C

X

N H_{3}

and at a still higher temperature gives boron nitride

{(B N)}_{n}

. The compounds

X

Y

respectively are:

Q. A compound of boron X reacts at

200^{\circ} C

temperature with

N H_{3}

to give another compound

Y

which is called as inorganic benzene. The compound

Y

is a colourless liquid and is highly sensitive. Its melting point is

- 57^{\circ} C

X

N H_{3}

and at a still higher temperature gives boron nitride

{(B N)}_{n}

. The compounds

X

Y

respectively are:

A compound of B (Boron), X reacts at $200^{\circ} C$ with $N H_{3}$ to give another compound Y which is called as inorganic benzene. The compound Y is colorless liquid and is highly light sensitive. The compound X with excess of $N H_{3}$ and at still higher temp gives $(B N)_{n}$ . The compound X and Y respectively.

X

, of boron reacts with

N H_{3}

on heating to give another compound

Y

which is called inorganic benzene. The compound

X

can be prepared by treating

B F_{3}

with lithium aluminum hydride. The compounds

X

Y

are represented by formula:

N a_{2} B_{4} O_{7} .10 H_{2} O 720^{o} C - --- \to Δ 2 N a B O_{2} + (X) + 10 H_{2} O

(X) + C a F_{2} + H_{2} S O_{4} ⟶ (Y) + C a S O_{4} + H_{2} O

(Y) + N a B H_{4} ⟶ (Z) + N a B F_{4}

(Z) High temperature - --------- \to N H_{3} (1 : 2) B_{3} N_{3} H_{6} Inorganic benzene

Select the correct statements regarding compound

(X), (Y)

(Z)

.

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