The preparation of a series of 3, 3-bis (trimethylstannyl)-, 3, 3-bis (halodimethylstannyl)-, and 3, 3-bis-(dihalomethybtanny1) propyl derivatives having carboxyl, hydroxy, acetoxy, and sulfoxy as functional groups is described. Intramolecular coordination in the bromostannyl acetates and sulfoxides was examined. 3, 3-Bis (bromodimethylstanny1) propyl acetate showed no evidence of coordination in the solid state or in acetonitrile as shown by IR ...