Acta Cryst. (2005). E61, m1810-m1812  [ doi:10.1107/S1600536805025493 ]

A seven-coordinated tin(IV) complex: dichloro[2,6-diacetylpyridine bis(S-benzyldithiocarbazato-⁵S,N,N',N'',S']tin(IV)

G. F. de Sousa, J. Valdés Martínez and S. Hernández-Ortega

Abstract: The pentadentate ligand 2,6-diacetypyridine bis(S-benzyldithiocarbazate) reacts with SnCl₂·2H₂O and atmospheric O₂ to form a seven-coordinated Sn^IV complex. The asymmetric unit of the title compound, [Sn(C₂₅H₂₃N₅S₄)Cl₂], consists of one half-molecule. One Cl, Sn, N of the pyridine ring and the para-C,H atoms lie on a twofold axis. The Sn^IV ion is seven-coordinated with a distorted pentadentate bipyramidal geometry. The dithiocarbazate ligand coordinates as a dianionic pentagonal ligand through the pyridine N atom, the two imine N atoms and the two thiocarbazate S atoms, forming the pentagonal plane; the two chloride ions are in axial positions. The complex was also characterized by ¹¹⁹Sn Mössbauer and IR spectroscopies.

Online 17 August 2005

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