Metal-induced various properties and structures of complexes based on methylene-derived diamide and S2-bridged carboxylate

By introducing different metal ions, six new coordination polymers (CPs) [Zn(L) 0.5 (DTSA)]·H 2 O ( CP1 ), [Cd(L) 0.5 (DTSA)(H 2 O)] ( CP2 ), [Mn(L) 0.5 (DTSA)(H 2 O)] ( CP3 ), [Co(L) 0.5 (DTSA)(H 2 O)] ( CP4 ), [Ni(L) 0.5 (DTSA)(H 2 O)] ( CP5 ), [Pb 2 (L) 0.5 (DTSA) 2 ] ( CP6 ), [ N , N ′-bis(4-methylenepyridin-4-yl)-1,4-benzenedicarboxamide (L), 2,2′-dithiodibenzoic acid (H 2 DTSA)] have been synthesized under hydrothermal conditions. CP1 is a unified node (4,4)-connected network derived from Zn 2 nodes, pairs of DTSA anions and μ 2 -L linkers. CP2 – CP5 display similar binode (4,4)-connected layers based on single metal centers, μ 2 -DTSA anions and μ 4 -L linkers. CP6 show a novel 3D (3,4,4,5)-connected Pb-based framework, which is constructed form Pb-DTSA layers and μ 4 -L linkers. The effect of metal ions on the architectures of the title complexes is investigated. The experimental results indicate that CP1 , CP2 and CP6 are efficient luminescent sensors for the detection of Fe 3+ ions ( CP1 and CP2 ) and dimethyl sulfoxide (DMSO) ( CP1 and CP6 ). In addition, CP3 – CP5 show different electrochemical response to nitrite and bromate in water solution.