1. Finkelstein Reaction
2. Swarts Reaction
H3C – Br + AgF → H3C – F + AgBr Hg2F2, COF2 and SbF3 can also be used as a reagent for Swarts reaction.
3. Hunsdiecker Reaction
Physical Properties of Haloalkanes 1. Boiling point orders
1. R – I > R – Br > R – CI > R – F
2. CH3 –( CH2) 2 – CH2Br >( CH3) 2 CHCH2Br >( CH3) 3CBr 3. CH3CH2CH2 > CH3CH2X > CH3X
2. Bond strength of haloalkanes decreases as the size of the halogen atom increases. Thus, the order of bond strength is
CH3F > CR3Cl > CR3Br > CH3I
3. Dipole moment decreases as the electronegativity of the halogen decreases.
4. Haloalkanes though polar but are insoluble in water as they do not form hydrogen bonding with water.
5. Density order is RI > RBr > RCl > RF( For the same alkyl group) CH3I > C2H5I > C3H7I