Exams › JEE Advanced › Chemistry

In the reaction 2X + B2H6 -> [BH2(X)]2+ + [BH4]-, which amine(s) X can bring about this unsymmetrical cleavage of diborane?

1. NH3
2. CH3NH2
3. (CH3)2NH
4. (CH3)3N

Correct answer: NH3

Solution

Small amines such as NH3 cause unsymmetrical (ionic) cleavage of B2H6 giving [BH2(NH3)2]+ and [BH4]-, whereas bulky bases like (CH3)3N give symmetrical cleavage.

Related JEE Advanced Chemistry questions

• What is formed when an excess amount of sodium hydroxide is added to a solution of stannous chloride?
• Which of the following substituted silanes can form a cross-linked silicone polymer upon undergoing hydrolysis?
• Which pairs of reactants most effectively demonstrate the dual acidic and basic behavior of Al2O3.xH2O?
• Among the following oxides, which one acts as the most potent oxidizing agent?
• Among the following compounds, which one acts as the most powerful reducing agent?
• Which xenon-oxygen compound cannot be produced through the hydrolysis of xenon fluorides?

⚔️ Practice JEE Advanced Chemistry free + battle 1v1 →