Abstract
Two new ladder n-dibutyltin(IV) compounds with general formulae [n-Bu<sub>2</sub>Sn]<sub>4</sub>(<i>μ<sub>3</sub></i>-O)<sub>2</sub>(<i>μ<sub>2</sub></i>-OH)<sub>2</sub>(OSO<sub>2</sub>R)<sub>2</sub> with R=4-HO-C<sub>6</sub>H<sub>4</sub>-(1) and CH<sub>3</sub>-(2) have been synthetized and characterized by elemental analysis, FT-IR, <sup>1</sup>H NMR and Mass spectroscopies techniques as well as single crystal X-ray diffraction study. The complex 1 crystallizes in the triclinic space group <i>P</i>1 with <i>a=</i>12.808 (8), <i>b</i>=15.391 (9), <i>c</i>=15.803 (10) Å, <i>α=</i>87.910 (5), <i>β=</i>66.650 (6), <i>γ=</i>80.283 (5)°, <i>V=</i>2817.6 (3) Å<sup>3</sup> and <i>Z</i>=1. The crystal structure reveal them to be tetranuclear tin (IV) ladder-like structure containing two deprotonated ligands an three-rung-staircase Sn<sub>4</sub>O<sub>4</sub> core. The structure is a centro-symmetric dimer of an oxoditin (IV) unit having a central four-member ring. In this complex, the central tin (IV) atoms are pentacoordinated, where the sulfonate base acts as monodentate ligands. Supramolecular architecture is formed by extensive hydrogen-bonding interactions, O-H…O.
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