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The tetranuclear molecules of the title compound, [Sn(4)(C(4)H(9))(8)(C(7)H(5)N(2)O(4))(4)O(2)], 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 carboxyl-ate anions, one bridging O atom and two butyl groups and the other Sn atom is coordinated by an O atom of the carboxyl-ate anion, two bridging O atoms and two butyl groups. All the butyl groups are equatorial with respect to the SnO(3) trigonal plane. The mol-ecular structure is stabilized by intra-molecular N-H⋯O hydrogen bonds. In the crystal, pairs of inter-molecular bifurcated acceptor N-H⋯O and C-H⋯O hydrogen bonds link the mol-ecules into chains along [10]. Weak inter-molecular C-H⋯π and π-π inter-actions [centroid-centroid distance = 3.713 (2) Å] are also observed.

Bis(μ2-4-amino-3-nitrobenzoato)bis(4-amino-3-nitrobenzoato)octabutyldi-μ3-oxido-tetratin(IV)

Bis(μ₂-4-amino-3-nitrobenzoato)bis(4-amino-3-nitrobenzoato)octabutyldi-μ₃-oxido-tetratin(IV)