Summary 1. Hydrogen-halogen exchange reactions of triethylsilane with three aliphatic chlorides in the presence of aluminum chloride are reported. 2. n-Hexyl chloride gave n- hexane; neopentyl chloride and neopentylcarbinyl chloride gave the rearrangement products, isopentane and 2, 3-dimethylbutane, respectively. A mechanism for exchange of silicon-hydrogen with carbon-chlorine in the presence of aluminum chloride is proposed. ...