Exchange of Coordinated Solvent During Crystallization of a Metal–Organic Framework Observed by In Situ High‐Energy X‐ray Diffraction |
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| Authors: | Dr Yue Wu Matthew I Breeze Dr Guy J Clarkson Dr Franck Millange Prof Dermot O'Hare Prof Richard I Walton |
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| Institution: | 1. Department of Chemistry, University of Oxford, OX1 3TA, UK;2. Department of Chemistry, University of Warwick, Coventry, UK);3. Département de Chimie, Université de Versailles-St-Quentin-en-Yvelines, Versailles cedex, France |
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| Abstract: | Using time‐resolved monochromatic high energy X‐ray diffraction, we present an in situ study of the solvothermal crystallisation of a new MOF Yb2(BDC)3(DMF)2]?H2O (BDC=benzene‐1,4‐dicarboxylate and DMF=N,N‐dimethylformamide) under solvothermal conditions, from mixed water/DMF solvent. Analysis of high resolution powder patterns obtained reveals an evolution of lattice parameters and electron density during the crystallisation process and Rietveld analysis shows that this is due to a gradual topochemical replacement of coordinated solvent molecules. The water initially coordinated to Yb3+ is replaced by DMF as the reaction progresses. |
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| Keywords: | crystal growth host– guest systems metal– organic frameworks microporous materials X-ray diffraction |
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