p-Block Elements-I 1 Question 15

15. In the reaction, 2X+B2H6[BH2(X)2]+[BH4] the amine(s) X is/are

(2009)

(a) NH3

(b) CH3NH2

(c) (CH3)2NH

(d) (CH3)3N

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Answer:

Correct Answer: 15. (a,b,c)

Solution:

  1. Diborane (B2H6) undergoes unsymmetric cleavage with NH3, primary and secondary amine while tertiary amine brings about symmetrical cleavage of B2H6 as :



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