(1) Triphenyltin hydride (C₆H₅)₃SnH and Tributyltin hydride (n-C₄H₉)₃SnH reduce primary, secondary and tertiary alkyl halides to corresponding alkanes. This reaction is carried out by heat, or by irradiation with light or in the presence of a free radical initiator like AIBN (azobisisobutyronitrile). Unlike LiAlH₄ here reduction does not take place by SN₂ rather takes place by free radical mechanism. Reactivity order for different halides follows as RI>RBr>RCl and for different alkyl it follows as Benzyl > Allyl > tertiary alkyl > secondary alkyl > primary alkyl.