MEDIUMMCQ SINGLEIChO (Chemistry Olympiad)Inorganic Chemistryp-Block (group 13 and 14)X and B

Identify X and Y in the following reaction. NaBH 140ºC C H Cl BCl NH Cl X Y + ¾¾¾¾® ¾¾¾¾®

A.X = NaBO₂, Y = B₂O₃
B.X = Na₂B₄O₇, Y = H₃BO₃
C.X = BN, Y =
D.X = B₃N₃H₃Cl₃, Y = B₃N₃H₆✓ Correct
Explanation

Boron trichloride on reaction with ammonium chloride gives trichlorido borazine, which upon subsequent re- duction yields the borazine. 4 3 3 3 3 3 3 3 3 3 4 3 3 6 3 3 9 (borazine) NH Cl BCl B N H Cl HCl B N H Cl NaBH B N H + ® + + ® Borazine is also called as inorganic benzene. The struc- ture of borazine is as follows:

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