Question

Which of the following statement is correct for diborane ?

• A. Small amines like NH3, CH3NH2 give unsymmetrical cleavage of diborane.
• B. Large amines such as (CH3)3N and pyridine gives symmetrical cleavage of diborane.
• C. Small as well as large amines both gives symmetrical cleavage of diborane.
• D. (1) and (2) both

Answer 1

Answer: (D)

(1) and (2) both

Answer 2

B2H6 + 2NH3 $\longrightarrow$ [H2B(NH3)2]+ + [BH4]–

B2H6 + 2N(CH3)3 $\longrightarrow$2H3B $\longleftarrow$ N(CH3)3