catena-Poly[[tri­phenyl­tin(IV)]-μ-N-(4-acetyl­phen­yl)maleamato]

The crystal structure of the polymeric title compound, [Sn(C(6)H(5))(3)(C(12)H(10)NO(4))](n), comprises polymeric chains whereby adjacent Sn atoms are bridged by carboxyl­ate 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)°]. Intra­molecular N—H⋯O hydrogen bonding leads to a seven-membered loop. There is an intra­molecular C—H⋯O inter­action within the polymeric chain. An inter­molecular C—H⋯O inter­action along c links the polymeric chains into sheets which are linked into a three-dimensional network via C—H⋯π inter­actions.