catena-Poly[[tri-phenyl-tin(IV)]-μ-N-(4-acetyl-phen-yl)maleamato].

The crystal structure of the polymeric title compound, [Sn(C6H5)3(C12H10NO4)] n , comprises polymeric chains whereby adjacent Sn atoms are bridged by carboxyl-ate and amide carbonyl O atoms [Sn-O = 2.115 (15) and 2.653 (1) Å, respectively]. The Sn(IV) atom is five-coordinated showing a distorted trigonal-bipyramid geometry, with the three phenyl ipso-C atoms defining the trigonal plane and the axial positions occupied by O atoms [O-Sn-O = 171.91 (5)°]. Intra-molecular N-H⋯O hydrogen bonding leads to a seven-membered loop. There is an intra-molecular C-H⋯O inter-action within the polymeric chain. An inter-molecular C-H⋯O inter-action along c links the polymeric chains into sheets which are linked into a three-dimensional network via C-H⋯π inter-actions.