Saved Bookmarks
| 1. |
What is inorganic benzene ? Why is it so called ? How will you get it from diborane ? |
Answer» SOLUTION :Borazine or borzole `(B_(3)N_(3)H_(6)`) is known as inorganic benzene . It is called because and the structure of borazine is similar to that of benzene. It is also isoelectronic and isosteric with benzene . Like carbon in benzene both N and b B in borazine are `sp^(2)` hybridised. Each N has a p-orbital which is perpendicular to the `alpha`- bonding orbitals and contains a lone pair of electrons. In contrast each B has an empty P - orbital which is also perpendicular to the plane of the ring. THUS the x-bonding in borazine is DATIVE and it arises from the sideways and overlaps the fully filled orbitals of N and empty P-orbitals of B  Preparation of borazine : At low temerature diborane combines with ammonia to form an addition compound. `B_(2)H_(6)+2NH_(3) overset("Low temp ") RARR B_(2)H_(6).2NH_(3)` When this addition compound is heated to 473 K, it decomposes to form a volatile compound called borazine . `3B_(2)H_(6).2NH_(3) overset(473 K) rarr UNDERSET("Borazine" )(2B_(3)N_(3)H_(6))+12H_(2)` |
|