Synthesis and characterization of fluoroalkyldistannoxanes

1,3-Disubstituted tetrakis(fluoroalkyl)distannoxanes (XRf2SnOSnRf2Y)2 (Rf=C6F13C2H4, C4F9C2H4; X, Y=Cl, Br, NCS) were synthesized from readily available dibenzyltin dibromide. The dimeric formulation of these compounds that was confirmed by 119Sn-NMR spectra gave rise to a structure in which the metalloxane core is covered by the surface fluorophilic alkyl groups. Thus, these compounds exhibited high solubility in fluorocarbon solvents and large partition coefficients for FC-72 against common organic solvent.