Orientational ortho−H2 pair interactions in the microporous framework MOF-5

Title:
Orientational ortho−H2 pair interactions in the microporous framework MOF-5
Authors:
FitzGerald, Stephen; Eckdahl, Christopher T.; McDonald, Cooper S.; Nelson, Jocienne N.; Shinbrough, Kai; Lai, Holden W. H.; Rowsell, Jesse L. C.
Abstract:
Infrared spectroscopy is used to observe the orientational fine structure arising from ortho−H2 adsorbed at the primary site of the microporous framework MOF-5. The Q1(1) vibrational transition shows at least two symmetrically spaced fine structure bands on either side of the main band. These grow in relative intensity with increasing H2 concentration indicative of interacting H2 pairs. This interpretation is strongly supported by D2 addition experiments, which cause a large increase in intensity of the fine structure bands with only minimal change in the main band. The spectra are analyzed in terms of H2−H2 electric quadrupole-quadrupole interactions. Consistent with this approach we observe no fine structure bands for the Q1(0) vibrational transition arising from para−H2, which does not possess a quadrupole moment.
Citation:
FitzGerald, Stephen A., Christopher T. Eckdahl, Cooper S. McDonald, et al. 2015. "Orientational ortho−H2 pair interactions in the microporous framework MOF-5." Physical Review B 92(13): 134304 1-6.
Publisher:
American Physical Society
DATE ISSUED:
2015-10-09
Department:
Physics and Astronomy
Type:
Article
PUBLISHED VERSION:
10.1103/PhysRevB.92.134304
PERMANENT LINK:
http://hdl.handle.net/11282/582234

Full metadata record

DC FieldValue Language
dc.contributor.authorFitzGerald, Stephenen
dc.contributor.authorEckdahl, Christopher T.en
dc.contributor.authorMcDonald, Cooper S.en
dc.contributor.authorNelson, Jocienne N.en
dc.contributor.authorShinbrough, Kaien
dc.contributor.authorLai, Holden W. H.en
dc.contributor.authorRowsell, Jesse L. C.en
dc.date.accessioned2015-11-16T13:34:14Zen
dc.date.available2015-11-16T13:34:14Zen
dc.date.issued2015-10-09en
dc.identifier.citationFitzGerald, Stephen A., Christopher T. Eckdahl, Cooper S. McDonald, et al. 2015. "Orientational ortho−H2 pair interactions in the microporous framework MOF-5." Physical Review B 92(13): 134304 1-6.en
dc.identifier.issn1098-0121en
dc.identifier.urihttp://hdl.handle.net/11282/582234en
dc.description.abstractInfrared spectroscopy is used to observe the orientational fine structure arising from ortho−H2 adsorbed at the primary site of the microporous framework MOF-5. The Q1(1) vibrational transition shows at least two symmetrically spaced fine structure bands on either side of the main band. These grow in relative intensity with increasing H2 concentration indicative of interacting H2 pairs. This interpretation is strongly supported by D2 addition experiments, which cause a large increase in intensity of the fine structure bands with only minimal change in the main band. The spectra are analyzed in terms of H2−H2 electric quadrupole-quadrupole interactions. Consistent with this approach we observe no fine structure bands for the Q1(0) vibrational transition arising from para−H2, which does not possess a quadrupole moment.en
dc.language.isoen_USen
dc.publisherAmerican Physical Societyen
dc.identifier.doi10.1103/PhysRevB.92.134304en
dc.subject.departmentPhysics and Astronomyen_US
dc.titleOrientational ortho−H2 pair interactions in the microporous framework MOF-5en_US
dc.typeArticleen
dc.identifier.journalPhysical Review Ben
dc.subject.keywordMetal-organic frameworksen_US
dc.subject.keywordResolution infrared-spectroscopyen_US
dc.subject.keywordSolid hydrogenen_US
dc.subject.keywordAbsorption intensitiesen_US
dc.subject.keywordParahydrogenen_US
dc.subject.keywordTransitionsen_US
dc.identifier.volume92en_US
dc.identifier.issue13en_US
dc.identifier.startpage134304-1en_US
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