Hydrothermal Synthesis And Characterization Of One Dimensional Chain Structures Of Monolacunary Keggin Polyoxoanions Substituted With Copper
| Autor: | Mehtap Emirdag-Eanes, Banu Önen, Colin D. McMillen |
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| Přispěvatelé: | TR58073, TR58612, Emirdağ Eanes, Mehtap, Önen, Banu, Izmir Institute of Technology. Chemistry |
| Rok vydání: | 2015 |
| Předmět: |
Stereochemistry
Pyridine chemistry.chemical_element Copper Hydrothermal Hydrothermal circulation Hybrid Inorganic Chemistry Crystallography Paramagnetism chemistry.chemical_compound chemistry Transition metal Materials Chemistry Hydrothermal synthesis Keggin Physical and Theoretical Chemistry Polyoxoanion Single crystal Monoclinic crystal system |
| Popis: | Two novel polymeric polyoxometallates constructed from transition metal substituted heteropolytungstates, [(4,4’bpyH2)2(4,4’bpyH)][PCuW11O39]·H2O (1), and [(4,4’bpyH2)(pyH)3][PCuW11O39]·2H2O (2), (4,4’bpy = 4,4’bipyridine, py = pyridine) have been synthesized under hydrothermal conditions and characterized by IR, TGA, single crystal X-ray diffraction and magnetic measurements. The product formation showed a high sensitivity toward experimental factors including pH and stirring. Compounds 1 crystallizes in the monoclinic space group P2(1)/n with a = 13.503(3) Å, b = 26.726(5) Å, c = 15.168(3) Å, = 99.61(3)° and Z=4. The second compound also crystallizes in space group P2(1)/n, but with a = 13.519(3) Å, b = 20.431(4) Å, c =18.655(4) Å, = 96.52(3)° and Z=4. Compound 1 exhibits a zigzag chain structure, while compound 2 exhibits a straight chain structure. Compound 2 is the first example of a polyoxometallate containing 1D chains of transitionmetal- substituted heteropolytungstate designed with two significantly different organic units as the countercations. The Cu2+ ions in 1 exhibit paramagnetic behavior. TÜBİTAK (109T903) |
| Databáze: | OpenAIRE |
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