Question

How is borazine prepared ? Why is it called inorganic benzene ? How does borazine differ from benzene

Answer 1

Borazine Molecule - H3B3N3H3
Preparation:

Boron chloride is treated with Ammonium chloride in Chloro Benzene solvent to get B-trichloroborazine.

The chlorine atoms in B-trichloroborazine are replaced by Hydride ions to Get Borazine.

Chemical Equation:
                              chlorobenzene
3NH4Cl +3BCl3  ---------------------------> H3N3B3Cl3 + 9HCl
                                         THF
 H3N3B3Cl3  + 3LiBH4  ------------>H3B3N3H3 +3LiCL +3THFBH3

Properties of Borazine:

Borazine's structure is isoeelctronic with benzene.
Borazine is called as Inorganic Benzene because it has same structure like Benzene .
In Borazine , 6 carbon atoms of Benzene are replaced by Three B atoms and Three N atoms. There by total numbers of electrons in Borazine and Benzene is same

The structure is as Follows :
Check the attachment

In Borazine molecule, nitrogen is more electro negative than the boron . Nitrogen acquires partial negative charge and boron acquires partial positive charge.
Even though Borazine and Benzene have same stricture their chemical properties are different.
--> Organic benzene is C6H6 while Inorganic benzene is Borazine having chemical formula B3N3H6
---> Borazine is more reactive than Benzene
----> borazine undergoes addition reactions compared to benzene.