Syntheses,Characterization Of Complexes Based On Triazolyl Aromatic Carboxylic Acid

The potential application value of nitrogenous aromatic carboxylic acid complexes in drug delivery,molecular recognition,gas adsorption and separation has attracted more and more attention.In this paper,fifteen complexes with novel structure,based on4,4’-（1H-1,2,4-triazol-1-yl）methylene-bis（benzonic acid）（H₂TZMB）ligands with transition metal ions were synthesized and were characterized by X-ray diffraction,IR spectroscopy,the powder X-ray diffraction,and elemental analysis.The complexes 1,2,3,6,7,10,11 and12 have been determined by fluorescence spectrum analyses.The complexes 5,8,9 and 15have been investigated magnetic properties.Results show that 1 and 2 have good recognition abilities for acetone,NP and Fe³⁺,which can be be used as candidate materials for fluorescent probes to detect toxic substances in water.Moreover,complexes 5,8,9 and 15 have antiferromagnetic interaction.The molecular formula of the complexes 1-15 are as follows,[Zn（TZMB）]_n（1）{[Zn（TZMB）（H₂TZMB）]·（C₂H₅OH）_0.5（H₂O）_2.5}_n（2）{[Cd（TZMB）（DMA）]·（H₂O）_0.5}_n（3）{[Co（HTZMB）₂（H₂O）₂]·H₂O}_n（4）{[Mn₂（TZMB）₂（H₂O）（DMA）]·DMA}_n（5）[Cd（TZMB）（1,4-bib）_0.5]·（H₂O）_1.5}_n（6）[Zn（TZMB）（1,4-bib）0.5]}_n（7）{[Mn₂（TZMB）₂（1,4-bib）_0.5（H₂O）₂]·（H₂O）₂（DMA）}_n（8）{[Co₂（TZMB）₂（1,4-bib）]·（H₂O）_1.5}_n（9）{[Cd（TZMB）（1,3-bimb）]·（H₂O）₂}_n（10）{[Cd（TZMB）（1,4-bimb）]·H₂O}_n（11）{[Cd（HTZMB）₂（4,4′-bibp）]·（4,4′-bibp）（H₂O）_0.5}_n（12）{[Ni（TZMB）（1,4-bipb）（H₂O）]·（H₂O）}_n（13）{[M（TZMB）（4,4-bibp）（H₂O）_0.5]·（H₂O）_3.5}_n（14¹5）[M=Ni（14）,Co（15）]Complex 1 is a 2-node 3,6-connected 3D dual-core network structure with point symbol(6¹¹.8⁴)（6³）2.Complex 2 is a 2D network structure that interacts with hydrogen bonds to form a 3D supermolecular structure.Complex 3 is also the 3D structure with 2 node 4,8-connected and the point symbol is{4⁴.6²}2{4⁸.6¹⁸.8²}.Complex 4 is a one-dimensional chain structure.The complex 5 is a 4 node 5,5,5,5-connected 3D multicore structure,and its point symbol is{4⁵.6⁵}{4⁶.6⁴}.The complex 6 is 4,4-connected 3D framework,and the point symbol is（4⁷.8⁴）（4.7².8³）.Complex 7 is a 3,4-connected 3D framework and the topos type is dmc（topos&RCSR.ttd）,with the point symbol being{4.8²}{4.8⁵}.Complex 8 is a 5-connected dual-core3Dnetworkstructurewithpointsymbolis{3.4.5}{3.4³.5³.6².7}{3.4⁵.5⁴.6¹¹.7¹¹.8³.9}{4.5.6}{4².6}.Complex 9 is 3,4-connected 3D structure.The topos type of 9 is dmc（topos&RCSR.ttd）with point symbol（4.8²）（4.8⁵）.Complex 10 is a 5-connected2D structure with point symbol（4⁸.6²）.Complex 11 is 4,4-connected 3D structure with point symbol（4.8⁵）.Complex 12 is the second node,4,5-connected to the 3D structure,with point symbol{6⁶}{6⁹.8}.Complex 13 a three-node 3,4,6-connected 3D structure,its point symbol{3².4.5.6³.7.8²}{3².4².5.6⁴.7².8⁴}{3².4}.The complexes 14 and 15 are heterogeneous isomorphism,which are 3D structure with four nodes,3,4,4,6-connected.The point symbol is{3.4³.5².6³.7⁴.8²}₂{3.6³.7.8}₂{3².4.5².6}{4.6.7}₂.