Acta Cryst. (2010). E66, m1406-m1407 [ doi:10.1107/S1600536810040146 ]
Abstract: The tetranuclear molecules of the title compound, [Sn4(C4H9)8(C7H5N2O4)4O2], reside on a crystallographic inversion center. Both the two independent Sn atoms are five-coordinate, with distorted trigonal-bipyramidal geometries. One Sn atom is coordinated by two O atoms of the carboxylate anions, one bridging O atom and two butyl groups and the other Sn atom is coordinated by an O atom of the carboxylate anion, two bridging O atoms and two butyl groups. All the butyl groups are equatorial with respect to the SnO3 trigonal plane. The molecular structure is stabilized by intramolecular N-HO hydrogen bonds. In the crystal, pairs of intermolecular bifurcated acceptor N-HO and C-HO hydrogen bonds link the molecules into chains along . Weak intermolecular C-H and - interactions [centroid-centroid distance = 3.713 (2) Å] are also observed.
Online 13 October 2010
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