Crystal structure of (μ- trans-1,2-bis-{2-[(2-oxido-phen-yl)methyl-idene]hydrazin-1-yl-idene}ethane-1,2-diolato-κ3O, O', N)bis-[di- tert-butyl-tin(IV)]

Abstract

The binuclear complex, [Sn₂(C₄H₉)₄(C₁₆H₁₀N₄O₄)], contains two Sn⁴⁺ ions, connected by doubly N-deprotonated oxalylbis[(2-oxido-benzyl-idene)hydrazide] ligands, and each Sn⁴⁺ ion is linked to two tert-butyl groups. The coordination sphere of each Sn atom is best described as a distorted trigonal bipyramid. Each stannic ion in the complex is in a C₂O₂N environment. The two homologous parts of the doubly deprotonated ligand are located in trans positions with respect to the C-C bond of the oxalamide group. The oxalamide group exhibits an asymmetric coordination geometry, as seen by the slight difference between the C-O and C-N bond lengths. The three-dimensional network is a multilayer of complex mol-ecules with no strong supramolecular inter-actions.

Keywords: Schiff base; crystal structure; tin.