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Infrared spectra of amino acid zwitterions isolated in alkali halide matrices

Fischer, Gad

Description

A new spray sampling method (DSD) exploited in the measurement of infrared absorption of amino acids and dipeptides has resulted in a third category of spectra. They display qualitative similarities to the resolved bands obtained in the vapor and low-temperature inert-gas isolated matrix, and on the other hand have some common vibrational frequencies with the solution and alkali halide pressed pellet spectra. Comparisons of group frequencies obtained by the DSD and pellet methods, and presented...[Show more]

dc.contributor.authorFischer, Gad
dc.date.accessioned2015-12-07T22:39:42Z
dc.identifier.issn0022-2860
dc.identifier.urihttp://hdl.handle.net/1885/23991
dc.description.abstractA new spray sampling method (DSD) exploited in the measurement of infrared absorption of amino acids and dipeptides has resulted in a third category of spectra. They display qualitative similarities to the resolved bands obtained in the vapor and low-temperature inert-gas isolated matrix, and on the other hand have some common vibrational frequencies with the solution and alkali halide pressed pellet spectra. Comparisons of group frequencies obtained by the DSD and pellet methods, and presented for a number of amino acids and dipeptides, are informative of structural differences in the molecules obtained by the two methods. As well, results are presented for the measured and predicted dependence on the alkali halide matrix. It is argued that the sum of evidence presented supports the conclusion that zwitterions isolated as monomers are produced by the DSD sampling method. The method is not exclusive to the amino acids. Other applications include purine and water.
dc.publisherElsevier
dc.sourceJournal of Molecular Structure
dc.subjectKeywords: Inert gases; Infrared spectroscopy; Low temperature effects; Monomers; Vapors; Vibration control; Water; Alkali halide matrices; Matrix isolated; Spray technique; Vibrational frequencies; Zwitterions; Amino acids Amino acids; Infrared spectroscopy; Matrix isolated; Spray technique; Zwitterions
dc.titleInfrared spectra of amino acid zwitterions isolated in alkali halide matrices
dc.typeJournal article
local.description.notesImported from ARIES
local.identifier.citationvolume786
dc.date.issued2006
local.identifier.absfor030606 - Structural Chemistry and Spectroscopy
local.identifier.ariespublicationu9911292xPUB29
local.type.statusPublished Version
local.contributor.affiliationFischer, Gad, College of Physical and Mathematical Sciences, ANU
local.description.embargo2037-12-31
local.bibliographicCitation.startpage134
local.bibliographicCitation.lastpage139
local.identifier.doi10.1016/j.molstruc.2005.09.043
dc.date.updated2015-12-07T10:52:13Z
local.identifier.scopusID2-s2.0-33645968970
CollectionsANU Research Publications

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