A new coordination compound with formula [Tb(2-TC)3(DMF)]n(1, 2-TC = 2-thiophenecarboxylic ligand and DMF = dimethylformamide) was synthesized by solvothermal method. The structure of compound 1 was determined by single-crystal X-ray diffraction analyses, and characterized by elemental analyses, IR and powder X-ray diffraction. Structure analysis reveals compound 1, exhibiting a one-dimensional chain structure, crystallizes in triclinic space group P21/c, with a = 9.2751(19), b = 16.490(3), c = 15.865(5) A, β = 118.98(2)o, V = 2122.7(9) A3, Dc = 1.916 g/cm3, Mr = 612.45(C18H15NO7S3Tb), F(000) = 1196, μ(MoKα) = 3.67 mm–1, Z = 4, R = 0.0616 and wR = 0.0962 for 3865 observed reflections(I > 2σ(I)), and R = 0.1092 for all data. Meanwhile, the photoluminescent properties of compound 1 were also investigated in the solid state at room temperature. A new coordination compound with formula [Tb (2-TC) 3 (DMF)] n (1,2-TC = 2-thiophenecarboxylic ligand and DMF = dimethylformamide was synthesized by solvothermal method. -crystal X-ray diffraction analyzes, and characterized by elemental analyzes, IR and powder X-ray diffraction. Structure analysis reveals compound 1, exhibiting a one-dimensional chain structure, crystallizes in triclinic space group P21 / c, with a = 9.2751 ( B = 16.490 (3) c = 15.865 A = β = 118.98 (2) o V = 2122.7 (9) A3 Dc = 1.916 g / cm3 Mr = 612.45 (C18H15NO7S3Tb) F 000 = 1196, μ (MoKα) = 3.67 mm -1, Z = 4, R = 0.0616 and wR = 0.0962 for 3865 observed reflections (I> 2σ (I)), and R = 0.1092 for all data. photoluminescent properties of compound 1 were also investigated in the solid state at room temperature.