Synthesis and crystal structures of four ladder distannoxane dimers

Abstract

Abstract Four distannoxane dimers [ClR2SnOSnR2X]2 (X=Cl, R=PhCH2 1, 2-FC6H4CH2 2, 2-ClC6H4CH2 3, X=OH, R=2,4-ChC6H3CH2 4) have been synthesized by the hydrolytic reaction of (PhCH2)2SnCh with soditma alkoxides. And all these four complexs were characterized by elemental analysis, IR, 1H NMR spectroscopies and X-ray diffraction. All compounds were assigned tetranuclear distannoxane structures in solid state, which contain so-called ladder arrangement with a central planar Sn2O2 four-membered ring. The endo- and exo-cyclic Sn atoms are both five-coordinate, and have distorted trigonal bipyramidal geometries.