Metal-Ion Metathesis in Metal-Organic Frameworks: A Synthetic Route to New Metal-Organic Frameworks
| Autor: | Soonsang Hong, Yonghwi Kim, Kimoon Kim, Srinivasan Natarajan, Minyoung Yoon, Min Gyu Kim, Sunirban Das, Saurav Bhattacharya |
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| Rok vydání: | 2012 |
| Předmět: |
Models
Molecular Molecular Structure Surface Properties Chemistry Magnetic Phenomena Metal ions in aqueous solution Organic Chemistry Inorganic chemistry Tricarboxylic Acids General Chemistry Crystallography X-Ray Metathesis Catalysis Ion Exchange Metal Magnetization Adsorption Metals Heavy visual_art Organometallic Compounds visual_art.visual_art_medium Metal-organic framework Porosity Powder diffraction |
| Zdroj: | Chemistry - A European Journal. 18:16642-16648 |
| ISSN: | 0947-6539 |
| Popis: | A porous metal-organic framework, Mn(H(3)O)[(Mn(4)Cl)(3)(hmtt)(8)] (POST-65), was prepared by the reaction of 5,5',10,10',15,15'-hexamethyltruxene-2,7,12-tricarboxylic acid (H(3)hmtt) with MnCl(2) under solvothermal conditions. POST-65(Mn) was subjected to post-synthetic modification with Fe, Co, Ni, and Cu according to an ion-exchange method that resulted in the formation of three isomorphous frameworks, POST-65(Co/Ni/Cu), as well as a new framework, POST-65(Fe). The ion-exchanged samples could not be prepared by regular solvothermal reactions. The complete exchange of the metal ions and retention of the framework structure were verified by inductively coupled plasma-atomic emission spectrometry (ICP-AES), powder X-ray diffraction (PXRD), and Brunauer-Emmett-Teller (BET) surface-area analysis. Single-crystal X-ray diffractions studies revealed a single-crystal-to-single-crystal (SCSC)-transformation nature of the ion-exchange process. Hydrogen-sorption and magnetization measurements showed metal-specific properties of POST-65. |
| Databáze: | OpenAIRE |
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