摘要： Three novel transition metal coordination polymers [Cu(L1)]n·4nH2O (1) , [Zn(L2)2]n·3nH2O(2) ,[Co(L2)2]n·nH2O (3), (HL1=4-[3-methyl-5-(pyridin-4-yl)-1,2,4-triazol-4-yl]benzoic acid, and HL2=3-acetamido-5 - (3-methyl-5 - (pyridin-4-yl) - 4H-1, 2, 4-triazol-4-yl)benzoic acid) have been hydrothermal synthesized and characterized by single-crystal X-ray diffraction, optical and magnetic measurements. Compounds 1-3 are described as 1D polymeric chains. In compound 1, ligand L1? presents the μ3-bridging coordination mode, and ligand L2? presents two μ2-bridging coordination modes in compounds 2 and 3. The room-temperature photoluminescence spectra of 1 and 2 exhibit weak emissions in the visible region than that of the free ligands. The magnetic properties of 3 show typical antiferromagnetic interaction from 62 to 300 K. But no bifurcation of the ZFC and FC curve is observed from 2 to 80 K, which shows that 3 isn’t a magnet.