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

Three new complexes, namely, {[Cd(TZMB)(1,3-bimb)]·(H 2 O) 2 } n ( 1 ), {[Mn 2 (TZMB) 2 (1,4-bib) 0.5 (H 2 O) 2 ]·(H 2 O) 2 (DMA)} n ( 2 ), {[Co 2 (TZMB) 2 (1,4-bib)]·(H 2 O) 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 (4 8 ·6 2 ), complex 2 is a 3,3,3,5,9-connected net 3D framework with the point symbol of {3·4·5}{3·4 3 ·5 3 ·6 2 ·7}{3·4 5 ·5 4 ·6 11 ·7 11 ·8 3 ·9}{4·5·6}{4 2 ·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 (4·8 2 )(4·8 5 ). Furthermore, luminescent properties of 1 and the magnetic properties of complexes 2 and 3 were also investigated. [ABSTRACT FROM AUTHOR]