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• W2121003054 abstract "A series of dibutylbis{5-[(E)-2-(aryl)-1-diazenyl]-2-hydroxybenzoato}tin(IV) complexes, Bu2Sn(LH)2, have been prepared and characterized by 1H, 13C, 119Sn NMR and ESI mass spectrometry in solution. The structures of the complexes Bu2Sn(L1H)2 (1), Bu2Sn(L3H)2 (3), Bu2Sn(L4H)2 (4), and Bu2Sn(L6H)2 (6) (L = 5-[(E)-2-(aryl)-1-diazenyl]-2-hydroxybenzoate: aryl = phenyl (L1H), 3-methylphenyl (L3H), 4-methylphenyl (L4H) and 4-bromophenyl (L6H)) were determined by X-ray crystallography and 117Sn CP-MAS NMR spectroscopy in the solid state. In general, the complexes were found to adopt a skew-trapezoidal bipyramidal arrangement around the tin atom. In addition, there are weak bridging intermolecular Sn⋯O contacts in complexes 1 and 3, but not in 4 and 6, where one of the hydroxy oxygen atoms from a neighboring molecule coordinates weakly with the Sn atom, thereby completing a seventh coordination site in the extended Sn coordination sphere. The Sn⋯O distance is 3.080(2) and 3.439(2) Å in 1 and 3, respectively, which are significantly shorter than the sum of the van der Waals radii of the Sn and O atoms (∼3.8 Å). In 1, this Sn⋯O interaction links the molecules into polymeric chains. In 3, these interactions link pairs of molecules into head-to-head dimeric units. The in vitro cytotoxicity of compound 2 indicates better results than cisplatin and etoposide against seven well characterized human tumor cell lines." @default.
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• W2121003054 date "2004-12-01" @default.
• W2121003054 modified "2023-10-17" @default.
• W2121003054 title "Dibutyltin(IV) complexes of the 5-[(E)-2-(Aryl)-1-diazenyl]-2-hydroxybenzoic acid ligand: an investigation of structures by X-ray diffraction, solution and solid state tin NMR, electrospray ionisation MS and assessment of in vitro cytotoxicity" @default.
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• W2121003054 doi "https://doi.org/10.1016/j.jorganchem.2004.07.050" @default.
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