Two highly connected frameworks and one polythreading architecture based on multidentate N-donor ligands: Syntheses, structures, characterizations and photoluminescent properties

Three coordination polymers based on multidentate N-donor ligands and polycarboxylate anions, namely, [Co-3(4,4'-tmbpt)(4)(btc)(2)].9.5H(2)O (1), [Ag-4(4,4'-tmbpt)(btec)(H2O)(2)]center dot H2O (2) and [Zn(4,4'-tmbpt)(btec)(0.5)(H2O)]center dot 0.5H(2)O (3) (4,4'-tmbpt = 1-((1H-1,2,4-triazol-1-yl)methyl)-3,5-bis(4-pyridy1)-1,2,4-triazole, H(3)btc = 1,3,5-benzenetricarboxylic acid,000 and H(4)btec = 1,2,4,5-benzenetetracarboxylic acid) have been prepared under hydrothermal condition. Compound 1 displays a 3D (3,6,8)-connected framework with (4.6(2))(4(4).6(10).8)(4(14).6(12).8(2)) topology. Compound 2 is a 3D (4,5,8)-connected framework with (4(3).6(2).8)(4(3).6(5).8(2))(4(8).6(2))(4(10).6(10).8(8)) topology. Compound 3 exhibits a 2D -> 3D polythreading architecture. The photoluminescent spectra indicate that at room temperature, compounds 2 and 3 emit green and blue luminescence, respectively. (C) 2014 Elsevier B.V. All rights reserved.