Synthesis and Crystal Structure of One Trinuclear di-n-butyltin(IV) Complex with Salicylaldoxime

Abstract   One trinuclear di-n-butyltin(IV) complex with salicylaldoxime (o-HON=CHC₆H₄OH=HONZOH), (Bu₂Sn)(Bu₂SnO)(Bu₂SnOH)(ONZOH)(ONZO), has been synthesized and characterized by elemental analyses, IR spectrum, and single crystal X-ray diffraction. This complex is a small cluster displaying two unequivalent salicylaldoximate with one seven-coordinate pentagonal–bipyramidal tin atom linked two five-coordinate trigonal–bipyramidal tin atoms via a network of oxygen atoms by Sn–O–Sn bridges. The hydrogen bonds (o-HON=CHC₆H₄–O…H–O) are observed in the complex. These hydrogen bonds include intramolecular hydrogen bonds and intermolecular hydrogen bonds. (Bu₂Sn)(Bu₂SnO)(Bu₂SnOH)(ONZOH)(ONZO) belongs to monoclinic: space group P2₁/n, with a = 12.2307(15) ?, b = 17.361(2) ?, c = 20.976(3) ?, β = 94.424(2)°, V = 4440.5(10) ?³, Z = 4, D _c  = 1.500 g/cm³, μ(MoKα) = 1.715 mm⁻¹, F(000) = 2024, and final R ₁ = 0.0426, wR ₂ = 0.1064 for observed reflections 7779(I > 2σ(I)). Index abstract  The title compound, di-n-butyltin(IV) complex with salicylaldoxime, was synthesized and its crystal structure determined. Single crystal X-ray diffraction analysis reveals that the molecular structure of the title compound is trinuclear. The complex is a small cluster displaying two unequivalent salicylaldoximate with one seven-coordinate pentagonal–bipyramidal tin atom linked two five-coordinate trigonal–bipyramidal tin atoms via a network of oxygen atoms by Sn–O–Sn bridges.