The dialkyltin p-aminophenylacetate complex {[n-Bu 2Sn(O 2CCH 2C 6H 4NH 2-p)] 2O} 2 was synthesized by the reaction of diaikyltin oxide with p-aminopheriylacetic acid. Its structure has been determined by X-ray single crystal diffraction. The crystal belongs to morioclinic space group P2 1/n, with a=1.336 3(2) nm, b =1.168 5(2) nm, c=2.267 3(4) nm, β=93.391(3)°, Z=2, 7=3.534 1(11) nm 3, D c=1.470 Mg·m -3, μ(Mo Kα)=I.451 mm -1, F(000)=1 592, R 1=0.032 6, wR 2 =0.062 6. In the complex, the tin atoms are rendered five-coordination in a distor...