Synthesis, Structure and Characterization of a 3d-4f Hetero-metallic Complex Based on Imidazole-dicarboxylate

A new 3d-4f polymer formulated as {[SmCo2(mu(2)-Hmimda)(3)(mu(2)-H(2)mimda)center dot 4H(2)O]. 3H(2)O}(n) (H(3)mimda = 1-H-2-methy1-4,5-imidazole-dicarboxylic acid) has been hydrothermally synthesized and structurally characterized by elemental analysis, X-ray single-crystal diffraction and magnetic susceptibility measurement. It crystallizes in monoclinic system, space group C2/c, with a = 17.251(6), b = 16.965(6), c = 14.668(5) angstrom, beta = 118.565(5)degrees, Z = 4, V = 3770(2) angstrom(3), F(000) = 1984, the final R = 0.0597 and wR = 0.1820. In the crystal, the dicarboxylate ligand links the Sm(III) and Co(II) ions to give rise to a heterometallic [SmCo2(mu(2)-Hmimda)(3)(mu(2)-H(2)mimda)] aggregate which acts as the second building unit. Then, the SBUs further extended a 2D corrugated layer with a (4, 4) topology. The title complex displays strong photoluminescence in the solid state.