The DOI matches its Crossref record; 8 of the 8 references it cites were found in a registry or an index.
M2(m-dobdc) (M = Mg, Mn, Fe, Co, Ni) Metal–Organic Frameworks Exhibiting Increased Charge Density and Enhanced H2 Binding at the Open Metal Sites
Abstract
The well-known frameworks of the type M2(dobdc) (dobdc(4-) = 2,5-dioxido-1,4-benzenedicarboxylate) have numerous potential applications in gas storage and separations, owing to their exceptionally high concentration of coordinatively unsaturated metal surface sites, which can interact strongly with small gas molecules such as H2. Employing a related meta-functionalized linker that is readily obtained from resorcinol, we now report a family of structural isomers of this framework, M2(m-dobdc) (M = Mg, Mn, Fe, Co, Ni; m-dobdc(4-) = 4,6-dioxido-1,3-benzenedicarboxylate), featuring exposed M(2+) cation sites with a higher apparent charge density. The regioisomeric linker alters the symmetry of the ligand field at the metal sites, leading to increases of 0.4-1.5 kJ/mol in the H2 binding enthalpies relative to M2(dobdc). A variety of techniques, including powder X-ray and neutron diffraction, inelastic neutron scattering, infrared spectroscopy, and first-principles electronic structure calculations, are applied in elucidating how these subtle structural and electronic differences give rise to such increases. Importantly, similar enhancements can be anticipated for the gas storage and separation properties of this new family of robust and potentially inexpensive metal-organic frameworks.
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Metadata
- Authors
- Kapelewski, M. T., Geier, S. J., Hudson, M. R., Stück, D., Mason, J. A., Nelson, J. N., Xiao, D. J., Hulvey, Z., Gilmour, E., FitzGerald, S. A., Head-Gordon, M., Brown, C. M., & Long, J. R.
- Venue
- Journal of the American Chemical Society
- Publisher
- American Chemical Society (ACS)
- Published
- 2014-08-18
- Volume
- 136
- Issue
- 34
- Pages
- 12119-12129
- ISSN
- 0002-7863 (ISSN-L)
- 1520-5126
- OpenAlex
- W2123375990
- Cited by
- 270
- References
- 8
- FWCI
- 8.47
- Type
- journal article
- Language
- en
- Open access
- closed
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