The organometallic chemical vapor deposition reaction between tetra-tert-butoxytin and hydroxylated Al(110) proceeds in ultrahigh vacuum to generate a surface-bound tin alkoxide product. The stoichiometry of the product, [Al]-[O](3)-Sn(OBut), is different from that observed for zirconium alkoxide analogues. Facile ligand exchange of tert-butoxy for phenoxy can be accomplished for the surface-bound tin complex. Heating either surface tert-butoxytin or phenoxytin species ultimately gives the zerovalent metal. Deposition and thermal evolution reactions were followed by both reflection-absorption infrared and X-ray photoelectron spectroscopies.