| Twelve new coordination polymers, namely,[Pb（L）]（1）,[Mn2（L）2（H2O）]（2）,[Mn（L）（H2O）]（3）,[Zn3（L）2（H2O）4]（4）,[Zn（L）（pbib）0.5]·1.5H2O （5）,[Cd（L）（pbib）0.5]·2H2O（6）,[Zn（L）（bbtz）0.5]·H2O （7）,[Zn（L）（bbmb）0.5]（8）,[Co（L）（bbmb）0.5（H2O）]（9）,[Zn（L）（biim-6）0.5]·2H2O （10）,[Cd（L）（biim-6）0.5]·2H2O （11）, and [Cd（L）（biim-4）0.5]·2H2O （12）,where H2L=3-carboxy-1-carboxymethyl-2-oxidopyridinium, pbib=1,4-bis（imidazol-1-ylmethyl）benzene, bbtz=1,4-bis（1H-1,2,4-triazol-1-ylmethyl）benzene,bbmb=1,1’-（1,4-butanediyl）bis（2-methylbenzimidazole）, biim-6=1,1’-（1,6-hexanediyl）bis（imidazole）, and biim-4=1,1’-（1,4-butanediyl）bis（imidazole）, havebeen synthesized under hydrothermal conditions. Compound1features1D double-chainstructures, which are further linked by C–H···O hydrogen-bonding interactions to form a3Dsupramolecular architecture. Compounds2–11show2D layer structures. Compound2possesses a2D （42·64） layer. Compound3exhibits a2D undulated （4,4） sheet. The2D layersof compounds2and3are further connected by intermolecular hydrogen-bonding interactions,leading to a3D supramolecular architecture. The structure of compound4is a2D（3,4）-connected net with the （42·62·82）（42·6） topology. Compounds5-7have similar structures,and show2D （4,4） networks. Compound8has a similar structure to9, and displays a（3,4）-connected network with the （42·6）（42·63·8） topology. Compounds10and11revealsimilar （4,4） nets. The2D layers of compounds5-11are further extended into3Dsupramolecular architectures through the π-π interactions. Compound12shows a3D （65·8）CdSO4-type framework. The thermal stabilities of1-12have been studied bythermogravimetric analysis. The luminescent properties for4-8and10-12have also beeninvestigated in detail. |
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