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Time-Resolved InSitu X-ray Diffraction Reveals Metal-Dependent Metal-Organic Framework Formation

Versatility in metal substitution is one of the key aspects of metal-organic framework (MOF) chemistry, allowing properties to be tuned in a rational way. As a result, it important to understand why MOF syntheses involving different metals arrive at or fail to produce the same topological outcome. F...

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Published in:Angewandte Chemie 2016-11, Vol.128 (45), p.14287-14290
Main Authors: Wu, Yue, Henke, Sebastian, Kieslich, Gregor, Schwedler, Inke, Yang, Miaosen, Fraser, Duncan A X, O'Hare, Dermot
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container_issue 45
container_start_page 14287
container_title Angewandte Chemie
container_volume 128
creator Wu, Yue
Henke, Sebastian
Kieslich, Gregor
Schwedler, Inke
Yang, Miaosen
Fraser, Duncan A X
O'Hare, Dermot
description Versatility in metal substitution is one of the key aspects of metal-organic framework (MOF) chemistry, allowing properties to be tuned in a rational way. As a result, it important to understand why MOF syntheses involving different metals arrive at or fail to produce the same topological outcome. Frequently, conditions are tuned by trial-and-error to make MOFs with different metal species. We ask: is it possible to adjust synthetic conditions in a systematic way in order to design routes to desired phases? We have used insitu X-ray powder diffraction to study the solvothermal formation of isostructural M2(bdc)2dabco (M=Zn, Co, Ni) pillared-paddlewheel MOFs in real time. The metal ion strongly influences both kinetics and intermediates observed, leading in some cases to multiphase reaction profiles of unprecedented complexity. The standard models used for MOF crystallization break down in these cases; we show that a simple kinetic model describes the data and provides important chemical insights on phase selection.
doi_str_mv 10.1002/ange.201608463
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subjects Breaking down
Chemistry
Diffraction
Formations
Kinetics
Mathematical models
Metal-organic frameworks
Phases
Reaction kinetics
X-rays
title Time-Resolved InSitu X-ray Diffraction Reveals Metal-Dependent Metal-Organic Framework Formation
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