The synthesis of the first all-tin-dendrimer Sn [(CH2) 4SnPh3] 4 (2) results from complete hydrostannation of tetra (but-3-enyl) stannane (1) with triphenyltin hydride. Selective cleavage of one phenyl group from each dendron of 2 with anhydrous HCl results in Sn [(CH2) 4Sn (Cl) Ph2] 4 (3), which on treatment with LiAlH4 yields the corresponding hydride derivative Sn [(CH2) 4Sn (H) Ph2] 4 (4) containing four reactive Sn–H bonds. The ...