Fluorescent and magnetic properties of three complexes based on 4,4′-(1H-1,2,4-triazol-1-yl)methylene-bis(benzonic acid)

Abstract

Three new complexes, namely, {[Cd(TZMB)(1,3-bimb)]·(H2O)2}n (1), {[Mn2(TZMB)2(1,4-bib)0.5(H2O)2]·(H2O)2(DMA)}n (2), {[Co2(TZMB)2(1,4-bib)]·(H2O)1.5}n (3), have been synthesized under hydrothermal conditions and characterized by single-crystal X-ray diffraction analysis, elemental analysis (EA), IR spectra (IR), powder X-ray diffraction (PXRD) and thermogravimetric (TG) analysis. Single X-ray diffraction analysis reveals that complex 1 is a 5-connected net 2D network with the point symbol of (48·62), complex 2 is a 3,3,3,5,9-connected net 3D framework with the point symbol of {3·4·5}{3·43·53·62·7}{3·45·54·611·711·83·9}{4·5·6}{42·6} and complex 3 is a 3,4-connected 3D framework. The topological type of 3 is dmc (topos&RCSR.ttd) with the point symbol of (4·82)(4·85). Furthermore, luminescent properties of 1 and the magnetic properties of complexes 2 and 3 were also investigated.