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113Cd solid-state NMR for probing the coordination sphere in metal-organic frameworks.
Anusree Viswanath Kuttatheyil1, Marcel Handke, Jens Bergmann
1Universität Leipzig, Fakultät für Physik und Geowissenschaften, Linnéstrasse 5, 04103 Leipzig (Germany).
Chemistry (Weinheim an Der Bergstrasse, Germany)
|November 19, 2014
Summary
Solid-state nuclear magnetic resonance (NMR) using cadmium-113 (113Cd) effectively characterizes cadmium coordination polymers, even without single crystals. This sensitive technique reveals structural flexibility and guest-induced phase transitions in these materials.
Area of Science:
- Materials Science
- Solid-State Chemistry
- Spectroscopy
Background:
- Spectroscopic techniques are vital for determining the structure of materials, particularly when single crystals are unavailable.
- Solid-state nuclear magnetic resonance (NMR) spectroscopy offers high sensitivity and detailed information about metal ion environments.
Purpose of the Study:
- To investigate the utility of cadmium-113 (113Cd) solid-state NMR for characterizing cadmium coordination polymers.
- To demonstrate the sensitivity of 113Cd NMR in analyzing non-single-crystal materials.
- To explore the observation of guest-induced phase transitions and structural flexibility in coordination frameworks.
Main Methods:
- Utilized (113)Cd solid-state NMR spectroscopy.
- Investigated a series of 27 cadmium coordination polymers.
- Analyzed isotropic chemical shift and chemical-shift anisotropy to probe the cadmium environment.
Main Results:
- (113)Cd NMR proved to be a highly sensitive method for characterizing the cadmium environment in coordination polymers.
- The technique successfully analyzed materials lacking single-crystal forms.
- Guest-induced phase transitions were observed, highlighting the structural flexibility of the frameworks.
Conclusions:
- Solid-state (113)Cd NMR is a powerful and sensitive tool for the structural characterization of cadmium coordination polymers, irrespective of crystal quality.
- This NMR method provides insights into the dynamic behavior and structural adaptability of coordination frameworks.
Keywords:
113Cd solid-state NMRcoordination polymerscrystal structuresmetal-organic frameworksmicroporous materialsMore Related Videos
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