Abstract: A novel organo-tin compounds {[~nBu_2Sn(OOCC_5H_3(NO_2)_2)]_2O}_2 was synthesized by the reaction of 3, 5-dinitrobenzoic acid with (n-Bu)_2SnO. The structure was characterized by elemental analysis, IR spectroscopy as well as X-ray single crystal diffractometer. The crystal belongs to triclinic with space group Pī. Crystallographic date: a=1.0705(2) nm, b=1.3333(3) nm,c=1.4360(3) nm,α=68.892(3) °,β=78.297(3) °, γ=80.285(3) °,V=1.8620(7) nm~3 ,Z=1,dc=1.613g/cm~3 ,μ=1.406 mm~(-1),F(000)=908, R_1=0.0408, wR_2=0.0948. The complex is a centrosymmetric dimer structure mode with a four-membered central endo-cyclic Sn_2O_2 unit in which two bridged oxygen atoms both connect with an exo-cyclic tin atom.

Key words: A novel organo-tin compounds {[~nBu_2Sn(OOCC_5H_3(NO_2)_2)]_2O}_2 was synthesized by the reaction of 3, 5-dinitrobenzoic acid with (n-Bu)_2SnO. The structure was characterized by elemental analysis, IR spectroscopy as well as X-ray single crystal diffractometer. The crystal belongs to triclinic with space group Pī. Crystallographic date: a=1.0705(2) nm, b=1.3333(3) nm,c=1.4360(3) nm,α=68.892(3) °,β=78.297(3) °, γ=80.285(3) °,V=1.8620(7) nm~3 ,Z=1,dc=1.613g/cm~3 ,μ=1.406 mm~(-1),F(000)=908, R_1=0.0408, wR_2=0.0948. The complex is a centrosymmetric dimer structure mode with a four-membered central endo-cyclic Sn_2O_2 unit in which two bridged oxygen atoms both connect with an exo-cyclic tin atom.