View in EDS

UV-Raman study and theoretical analogue of picolinic acid in aqueous solution

Saved in:
Bibliographic Details
Title: UV-Raman study and theoretical analogue of picolinic acid in aqueous solution
Authors: Wang, Li-Ran1 wedu@263.net, Fang, Yan
Source: Journal of Molecular Spectroscopy. Nov2005, Vol. 234 Issue 1, p137-142. 6p.
Subjects: Raman effect, Hydrogen-ion concentration, Spectrum analysis, Density functionals
Abstract: Abstract: High quality Raman spectrum of picolinic acid aqueous solution with ultraviolet (UV) excitation of 325nm was obtained in this article. The state of picolinic acid in aqueous solution has been investigated over a wide range of solution pH values. The distinct changes of UV-Raman spectra accompanied with the pH variations indicate the changes of molecule structure. The calculations based on density functional theory were used to analyze the states of picolinic acid in aqueous solution. By comparing the experimental frequencies with the calculated ones, it can be concluded that when pH value varies from high to low, the picolinic acid tends to change from the anion form to the zwitterion that have the intermolecular hydrogen COOH⋯N bond. [Copyright &y& Elsevier]
Copyright of Journal of Molecular Spectroscopy is the property of Academic Press Inc. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Engineering Source
FullText Text:
  Availability: 0
Header DbId: egs
DbLabel: Engineering Source
An: 19085151
AccessLevel: 6
PubType: Academic Journal
PubTypeId: academicJournal
PreciseRelevancyScore: 0
IllustrationInfo
Items – Name: Title
  Label: Title
  Group: Ti
  Data: UV-Raman study and theoretical analogue of picolinic acid in aqueous solution
– Name: Author
  Label: Authors
  Group: Au
  Data: <searchLink fieldCode="AR" term="%22Wang%2C+Li-Ran%22">Wang, Li-Ran</searchLink><relatesTo>1</relatesTo><i> wedu@263.net</i><br /><searchLink fieldCode="AR" term="%22Fang%2C+Yan%22">Fang, Yan</searchLink>
– Name: TitleSource
  Label: Source
  Group: Src
  Data: <searchLink fieldCode="JN" term="%22Journal+of+Molecular+Spectroscopy%22">Journal of Molecular Spectroscopy</searchLink>. Nov2005, Vol. 234 Issue 1, p137-142. 6p.
– Name: Subject
  Label: Subjects
  Group: Su
  Data: <searchLink fieldCode="DE" term="%22Raman+effect%22">Raman effect</searchLink><br /><searchLink fieldCode="DE" term="%22Hydrogen-ion+concentration%22">Hydrogen-ion concentration</searchLink><br /><searchLink fieldCode="DE" term="%22Spectrum+analysis%22">Spectrum analysis</searchLink><br /><searchLink fieldCode="DE" term="%22Density+functionals%22">Density functionals</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: Abstract: High quality Raman spectrum of picolinic acid aqueous solution with ultraviolet (UV) excitation of 325nm was obtained in this article. The state of picolinic acid in aqueous solution has been investigated over a wide range of solution pH values. The distinct changes of UV-Raman spectra accompanied with the pH variations indicate the changes of molecule structure. The calculations based on density functional theory were used to analyze the states of picolinic acid in aqueous solution. By comparing the experimental frequencies with the calculated ones, it can be concluded that when pH value varies from high to low, the picolinic acid tends to change from the anion form to the zwitterion that have the intermolecular hydrogen COOH⋯N bond. [Copyright &y& Elsevier]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Journal of Molecular Spectroscopy is the property of Academic Press Inc. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
PLink https://search.ebscohost.com/login.aspx?direct=true&site=eds-live&db=egs&AN=19085151
RecordInfo BibRecord:
  BibEntity:
    Identifiers:
      – Type: doi
        Value: 10.1016/j.jms.2005.09.003
    Languages:
      – Code: eng
        Text: English
    PhysicalDescription:
      Pagination:
        PageCount: 6
        StartPage: 137
    Subjects:
      – SubjectFull: Raman effect
        Type: general
      – SubjectFull: Hydrogen-ion concentration
        Type: general
      – SubjectFull: Spectrum analysis
        Type: general
      – SubjectFull: Density functionals
        Type: general
    Titles:
      – TitleFull: UV-Raman study and theoretical analogue of picolinic acid in aqueous solution
        Type: main
  BibRelationships:
    HasContributorRelationships:
      – PersonEntity:
          Name:
            NameFull: Wang, Li-Ran
      – PersonEntity:
          Name:
            NameFull: Fang, Yan
    IsPartOfRelationships:
      – BibEntity:
          Dates:
            – D: 01
              M: 11
              Text: Nov2005
              Type: published
              Y: 2005
          Identifiers:
            – Type: issn-print
              Value: 00222852
          Numbering:
            – Type: volume
              Value: 234
            – Type: issue
              Value: 1
          Titles:
            – TitleFull: Journal of Molecular Spectroscopy
              Type: main
ResultId 1