title: A two-dimensional layered Cd(II) coordination polymer with a three-dimensional supramolecular architecture incorporating mixed multidentate N- and O-donor ligands.
abstract: The combination of N-heterocyclic and multicarboxylate ligands is a good choice for the construction of metal-organic frameworks. In the title coordination polymer, poly[bis{μ2-1-[(1H-benzimidazol-2-yl)methyl]-1H-tetrazole-κ(2)N(3):N(4)}(μ4-butanedioato-κ(4)O(1):O(1'):O(4):O(4'))(μ2-butanedioato-κ(2)O(1):O(4))dicadmium], [Cd(C4H4O4)(C9H8N6)]n, each Cd(II) ion exhibits an irregular octahedral CdO4N2 coordination geometry and is coordinated by four O atoms from three carboxylate groups of three succinate (butanedioate) ligands and two N atoms from two 1-[(1H-benzimidazol-2-yl)methyl]-1H-tetrazole (bimt) ligands. Cd(II) ions are connected by two kinds of crystallographically independent succinate ligands to generate a two-dimensional layered structure with bimt ligands located on each side of the layer. Adjacent layers are further connected by hydrogen bonding, leading to a three-dimensional supramolecular architecture in the solid state. Thermogravimetric analysis of the title polymer shows that it is stable up to 529 K and then loses weight from 529 to 918 K, corresponding to the decomposition of the bimt ligands and succinate groups. The polymer exhibits a strong fluorescence emission in the solid state at room temperature.
authors.affiliation: Department of Chemical Engineering, Henan Polytechnic Institute, 473009 Nanyang, Henan, People's Republic of China.
authors.forename: Qiu-Ying
authors.initials: QY
authors.lastname: Huang
authors.affiliation: Department of Chemical Engineering, Henan Polytechnic Institute, 473009 Nanyang, Henan, People's Republic of China.
authors.forename: Ming-Yang
authors.initials: MY
authors.lastname: Su
authors.affiliation: The College of Chemistry and Molecular Engineering, Zhengzhou University, 450001 Zhengzhou, Henan, People's Republic of China.
authors.forename: Xiang-Ru
authors.initials: XR
authors.lastname: Meng
mesh_terms: D001562:Benzimidazoles / Q000737:chemistry*; D002104:Cadmium / Q000737:chemistry*; D056831:Coordination Complexes / Q000737:chemistry*; D018360:Crystallography, X-Ray; D005453:Fluorescence; D006860:Hydrogen Bonding; D008024:Ligands; D015394:Molecular Structure; D011108:Polymers / Q000737:chemistry*; D013696:Temperature; D013777:Tetrazoles / Q000737:chemistry*
chemical_list: C000602491:1-((1H-benzimidazol-2-yl)methyl)-1H-tetrazole; D001562:Benzimidazoles; D056831:Coordination Complexes; D008024:Ligands; D011108:Polymers; D013777:Tetrazoles; D002104:Cadmium
keywords: 1-[(1H-benzimidazol-2-yl)methyl]-1H-tetrazole; CdII complex; crystal structure; irregular octahedral coordination geometry; metal–organic hybrid material; photoluminescent behaviour; succinate; thermogravimetric analysis; two-dimensional coordination polymer