JEE Advance - Chemistry (2009 - Paper 2 Offline - No. 7)
In the reaction
$$\mathrm{2X+B_2H_6\to[BH_2(X)_2]^+[BH_4]^-}$$
the amine(s) X is(are) :
NH$$_3$$
CH$$_3$$NH$$_2$$
(CH$$_3$$)$$_2$$NH
(CH$$_3$$)$$_3$$N
Explanation
Tertiary amine will not react due to the bulkiness of trimethyl groups. Tertiary amines instead react with diborane to give simple addition compounds through symmetrical cleavage of diborane.
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