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dc.contributorWichita State University. Department of Chemistryen_US
dc.contributor.authorLeavitt, Christopher M.en_US
dc.contributor.authorOomens, Josen_US
dc.contributor.authorDain, Ryan P.en_US
dc.contributor.authorSteill, Jeffrey D.en_US
dc.contributor.authorGroenewold, Gary S.en_US
dc.contributor.authorVan Stipdonk, Michael J.en_US
dc.date.accessioned2012-02-06T17:17:05Z
dc.date.available2012-02-06T17:17:05Z
dc.date.issued2009-05-01en_US
dc.identifier19201616en_US
dc.identifier9010412en_US
dc.identifierS1044-0305(09)00002-6en_US
dc.identifier.citationJournal of the American Society for Mass Spectrometry. 2009 May; 20(5): 772-82.en_US
dc.identifier.issn1879-1123en_US
dc.identifier.issn1044-0305en_US
dc.identifier.urihttp://dx.doi.org/10.1016/j.jasms.2008.12.023en_US
dc.identifier.urihttp://hdl.handle.net/10057/4393
dc.descriptionClick on the DOI link below to access the article (may not be free).en_US
dc.description.abstractAnionic group II metal nitrate clusters of the formula [M(2)(NO(3))(5)](-), where M(2) = Mg(2), MgCa, Ca(2), and Sr(2), are investigated by infrared multiple photon dissociation (IRMPD) spectroscopy to obtain vibrational spectra in the mid-IR region. The IR spectra are dominated by the symmetric and the antisymmetric nitrate stretches, with the latter split into high and low-frequency components due to the distortion of nitrate anion symmetry by interactions with the cation. Density functional theory (DFT) is used to predict geometries and vibrational spectra for comparison to the experimental spectra. Calculations yield two stable isomers: the first one contains two terminal nitrate anions on each cation and a single bridging nitrate ("mono-bridging"), while the second structure features a single terminal nitrate on each cation with three bridging nitrate ligands ("tri-bridging"). The tri-bridging isomer is calculated to be lower in energy than the mono-bridging one for all species. Theoretical spectra of the tri-bridging structure provide a better qualitative match to the experimental infrared spectra of [Mg(2)(NO(3))(5)](-) and [MgCa(NO(3))(5)](-). However, the profile of the low-frequency nu(3) band for the Mg(2) complex suggests a third possible isomer not predicted by theory. The IRMPD spectra of the Ca(2) and Sr(2) complexes are better reconciled by a weighted summation of the spectra of both isomers suggesting that a mixture of structures is present.en_US
dc.format.extent772-82en_US
dc.language.isoengen_US
dc.publisherSpringeren_US
dc.relation.ispartofseriesJournal of the American Society for Mass Spectrometryen_US
dc.relation.ispartofseriesJ. Am. Soc. Mass Spectrom.en_US
dc.sourceNLMen_US
dc.titleIRMPD spectroscopy of anionic group II metal nitrate cluster ionsen_US
dc.typeArticleen_US
dc.coverage.spacialUnited Statesen_US
dc.description.versionpeer revieweden_US
dc.rights.holderCopyright © 2009, American Society for Mass Spectrometryen_US


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