Synthesis and characterization of two new zinc(II) coordination polymers with bidentate flexible ligands: Formation of a 2D structure with (44.62)-sql topology
| Autor: | Roman Gajda, Arash Lalegani, Mohammad Khaledi Sardashti, Krzysztof Woźniak |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
chemistry.chemical_classification
Denticity 010405 organic chemistry Chemistry Coordination polymer Ligand Organic Chemistry chemistry.chemical_element Infrared spectroscopy Tetrahedral molecular geometry Bridging ligand Zinc 010402 general chemistry Topology 01 natural sciences 0104 chemical sciences Analytical Chemistry Coordination complex Inorganic Chemistry chemistry.chemical_compound Spectroscopy |
| Zdroj: | Journal of Molecular Structure. 1149:777-784 |
| ISSN: | 0022-2860 |
| DOI: | 10.1016/j.molstruc.2017.08.043 |
| Popis: | Zinc(II) coordination polymers [Zn(bip) 2 (NCS) 2 ] n ( 1 ) and [Zn(μ-bbd)(N 3 ) 2 ] n ( 2 ) were synthesized by using the neutral flexible bidentate N-donor ligands 1,4-bis(3,5-dimethylpyrazolyl)butane ( bbd ) and 1,3-bis(imidazolyl)propane ( bip ), mono-anionic NCS − or N 3 − ligand and zinc(II) chloride salts. The results of the X-ray analyses demonstrate that in the structure of 1 , the zinc(II) ion is located on an inversion center and exhibits an ZnN 6 octahedral arrangement while, in the structure of 2 , the zinc(II) ion adopts an ZnN 4 tetrahedral geometry. In the polymer 1 , the NCS groups are terminally N-bonded to the metal center and the each bip with anti-gauche conformation acts as bridging connecting four zinc(II) ions to form a two-dimensional network with a sql [point symbol (4 4 .6 2 )] topology while, in the polymer 1 , the N 3 groups are terminally bonded to the metal center and each bbd with anti-anti-anti conformation acts as bridging ligand connecting two zinc(II) ions to form a one-dimensional zig-zag chain. Coordination compounds 1 and 2 have been characterized by infrared spectroscopy, elemental analyses and single-crystal X-ray diffraction. Thermal analyses of polymers were also presented. |
| Databáze: | OpenAIRE |
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