Research Article: Octa­methyldi-μ3-oxido-bis­(μ2-thio­phene-3-acetato-κ2O:O′)(thio­phene-3-acetato-κO)tetra­tin(IV)

Date Published: May 01, 2009

Publisher: International Union of Crystallography

Author(s): Muhammad Danish, M. Nawaz Tahir, Nazir Ahmad, Abdul Rauf Raza, Muhammad Ibrahim.


In the centrosymmetric title compound, [Sn4(CH3)8(C6H5O2S)4O2], the central four-membered planar ring (Sn2O2) makes dihedral angles of 66.28 (12) and 77.43 (11)° with the heterocyclic rings of the bridging and monodentate ligands, respectively. One SnIV atom adopts a distorted SnO3C2 trigonal-bipyramidal geometry, with both C atoms in equatorial sites and the other a grossly distorted SnO4C2 octa­hedral or irregular arrangement. In the crystal, the mol­ecules are connected into pillar-like polymeric units making R22(12) ring motifs due to inter­molecular C—H⋯O inter­actions. C–H⋯π inter­actions are also present. The O atoms of the chelating ligands and the S atom of the monodentate ligand are disordered over two sets of sites in a 0.65 (6):0.35 (6) ratio

Partial Text

For related structures, see: Danish et al. (1995 ▶, 1996 ▶); Ng et al. (2001 ▶); Tahir et al. (1997a ▶,b ▶). For graph-set theory, see: Bernstein et al. (1995 ▶).




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