A novel three dimensional coordination polymer [Sm(2,5-pydc)(NO3)(H2O)]·(H2O) (2,5-pydc = 2,5-pyridine dicarboxylate) (1) had been synthesized hydrothermally and characterized by elemental analysis, FT-IR and single-crystal X-ray diffraction analysis. This coordination polymer crystallized in the monoclinic space group P2/n with cell parameters 𝑎 = 9.3610(4) Å, 𝑏 = 8.3498(3) Å, 𝑐 = 16.7159(8) Å, 𝛽 = 106.31(0)°, 𝑉 = 1253.98(184) Å3. Thermogravimetric analysis revealed that complex 1 is stable up to 400°C which on photoexcitation at 365 nm exhibited yellow emission at 583 nm.
