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A new Trinuclear Organotin(Ⅳ) Compound {[(CH3)2Sn]3(C9H7O3)2} has been synthesized and structurally characterized by X-ray analysis.The complex (C24H32N4O6Sn3,Mr =828.61) crystallizes in Orthorhombic,space group Pnma with a =8.5047 (16),b =28.466 (5),c =12.842 (2) (A),V=3109.1(10) (A)3,Z =4,Dc=1.770 g/cm3,μ (MoKα) =2.432 mm-1,F (000) =1608,the final R =0.0378 and wR =0.0973 for 2798 observed reflections with I > 2σ(Ⅰ).X-ray single-crystal structure analysis reveals that one tin(Ⅳ) atom adopts a distorted octahedral geometry,the other two tin(Ⅳ) atoms adopt distorted trigonal-bipyramidal geometry.The molecules are packed in one-dimensional chain polymer though the Sn…O interaction from adjacent molecules,respectively.