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The crystal structures of the title compounds {(nBu₂Sn(O₂CC(H)=C(H)C₄H₃O)]₂O}₂ and [Ph₃Sn(O₂CC(H)=C(H)C₄H₃O)] have been determined at room temperature. In the structure of {(nBu₂Sn(O₂CC(H)=C(H)C₄H₃O)]₂O}₂ two nBu₂Sn unites are connected to a controsymmetric nBu₄Sn₂O₂ core at the bridging oxygen atoms. Each pair of tin atoms is linked further by a bidentate bridging carboxylate ligand and each of the two remaining ligands binds an exocyclic tin atom in the monodentate mode with the result that both of the independent tin atoms exist in a distorted trigonal bypyramidal geometry. A similar coordination geometry is found in the structure [Ph₃Sn(O₂CC(H)=C(H)C₄H₃O)] which is polymeric owing to the presence of bidentate bridging carboxylate ligands. No evidence for tin to furan-oxygen internations was found in either of the structures.Muhammad Danish, Saqib Ali, Muhammad Mazhar, Amin Badshah, Edward R.T. Tiekin

CRYSTAL AND MOLECULAR STRUCTURES OF BIS[(3-(2-FURANYL)-2-PROPENOATO)DI-N-BUTYLTIN] OXIDE AND TRIPHENYLTIN 3-(2-FURANYL)-2-PROPENOATE