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Question

2X+B2H6[BH2(X)2]+[BH4] the amine(s) X is/are:


A

NH3

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B

CH3NH2

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C

(CH3)2NH

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D

(CH3)3N

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Solution

The correct options are
A

NH3


B

CH3NH2


C

(CH3)2NH


The reaction:

2X+B2H6[BH2(X)2]+[BH4]

Is consistent with X being a non-tertiary amine. As in, ammonia, methylamine and dimethylamine all would definitely give this reaction. However, with a tertiary amine, an adduct is formed:

2R3N+B2H62H3B(NR3)


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