title: Multidimensional transition metal complexes based on 3-amino-1H-1,2,4-triazole-5-carboxylic acid: from discrete mononuclear complexes to layered materials.
abstract: The synthesis and structural characterization of five transition metal complexes with different dimensionality and incorporating residues of 3-amino-1H-1,2,4-triazole-5-carboxylic acid (H2atrc) is reported: [Zn(Hatrc)2(H2O)] (1), [Mn(Hatrc)2(H2O)2]·2H2O (2), [Fe2(Hatrc)4(OH)2]·6H2O (3), [Cd(Hatrc)2(H2O)]n (4), and [Mn(atrc)(H2O)]n·nH2O (5). These materials could be prepared from solution (1-3), diffusion (4), or hydrothermal reactions (5) with various anions and L:M ratios. Structural details were revealed by single crystal X-ray diffraction. The discrete units composing compounds 1-3, the polymeric 1D chain of 4 and the 2D layer of 5 are further extended into 3D supramolecular architectures through the formation of hydrogen bonds.
authors.affiliation: Department of Chemistry, CICECO-Aveiro Institute of Materials, University of Aveiro, Campus Universitário de Santiago, 3810-193 Aveiro, Portugal. bliu_1203@163.com.|REQUIMTE/LAQV & Department of Chemistry and Biochemistry, Faculty of Sciences, University of Porto, 4169-007 Porto, Portugal. bliu_1203@163.com.
authors.forename: Bing
authors.initials: B
authors.lastname: Liu
authors.affiliation: Department of Chemistry, CICECO-Aveiro Institute of Materials, University of Aveiro, Campus Universitário de Santiago, 3810-193 Aveiro, Portugal. jafernandes@ua.pt.
authors.forename: José A
authors.initials: JA
authors.lastname: Fernandes
authors.affiliation: Department of Chemistry, University of Aveiro, QOPNA, Campus Universitário de Santiago, 3810-193 Aveiro, Portugal. jtome@ua.pt.|Department of Organic and Macromolecular Chemistry, Ghent University, B-9000 Ghent, Belgium. jtome@ua.pt.
authors.forename: João P C
authors.initials: JP
authors.lastname: Tomé
authors.affiliation: Department of Chemistry, CICECO-Aveiro Institute of Materials, University of Aveiro, Campus Universitário de Santiago, 3810-193 Aveiro, Portugal. filipe.paz@ua.pt.
authors.forename: Filipe A Almeida
authors.initials: FA
authors.lastname: Paz
authors.affiliation: REQUIMTE/LAQV & Department of Chemistry and Biochemistry, Faculty of Sciences, University of Porto, 4169-007 Porto, Portugal. l.cunha.silva@fc.up.pt.
authors.forename: Luís
authors.initials: L
authors.lastname: Cunha-Silva
mesh_terms: D002264:Carboxylic Acids / Q000737:chemistry*; D008024:Ligands; D019216:Metals, Heavy / Q000737:chemistry*; D008958:Models, Molecular; D011108:Polymers / Q000737:chemistry; D014230:Triazoles / Q000737:chemistry*
chemical_list: C000591593:3-amino-1H-1,2,4-triazole; D002264:Carboxylic Acids; D008024:Ligands; D019216:Metals, Heavy; D011108:Polymers; D014230:Triazoles
keywords: 1,2,4-triazole; crystal structures; supramolecular organization