Received 16 November 2012
The title compound, [Sn6(C4H9)6(CH3COO)6O6]·C7H8, has one half-toluene molecule and one half-organotin molecule in the asymmetric unit. The latter is situated about an inversion centre and belongs to the class of hexameric monoorganooxotin carboxylates with a hexagonal prismatic or `drum-like' motif of the central tin-oxygen core. Two Sn3O3 rings in a flat-chair conformation are linked via six Sn-O bonds and six bridging acetate groups. All Sn atoms have approximate octahedral coordination geometry. The Sn-O bonds which are trans to the alkyl group are significantly shorter than the others. One butyl group is disordered over two different sites, with occupancies of 0.9:0.1. Very large atomic displacement parameters of the toluene molecule indicate an unresolvable disorder about the twofold axis.
For an overview of the synthesis of organotin carboxylates, see: Mehrotra & Bohra (1983). For an overview on compositions and structure types of organotin carboxylates, see: Tiekink (1991). For structural details on hexameric, `drum-like' monoorganooxotin acetates, see: Day et al. (1988); Kuan et al. (2002); Beckmann et al. (2004). For `ladder-type' monoorganooxotin carboxylates, see: Day et al. (1988). For the static trans strengthening in alkyltin(IV) halides, see: Buslaev et al. (1989); Reuter & Puff (1992).
Data collection: APEX2 (Bruker, 2009); cell refinement: SAINT (Bruker, 2009); data reduction: SAINT; program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: DIAMOND (Brandenburg, 2006); software used to prepare material for publication: SHELXTL (Sheldrick, 2008).
Supplementary data and figures for this paper are available from the IUCr electronic archives (Reference: FJ2609 ).
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