• English
    • العربية
  • العربية
  • Login
  • QU
  • QU Library
  •  Home
  • Communities & Collections
  • Help
    • Item Submission
    • Publisher policies
    • User guides
    • FAQs
  • About QSpace
    • Vision & Mission
    • QSpace policies
View Item 
  •   Qatar University Digital Hub
  • Qatar University Institutional Repository
  • Academic
  • University Publications
  • QU Ceased Journals
  • Qatar University Science Journal - [From 1981 TO 2007]
  • View Item
  • Qatar University Digital Hub
  • Qatar University Institutional Repository
  • Academic
  • University Publications
  • QU Ceased Journals
  • Qatar University Science Journal - [From 1981 TO 2007]
  • View Item
  •      
  •  
    JavaScript is disabled for your browser. Some features of this site may not work without it.

    Proton And Carbon-13 Nuclear Magnetic Resonance Of Some 4-Amino-3-Alkyl (Aryl)-5-Thio-1,2,4-Triazolines And Their Derivatives

    Thumbnail
    View/Open
    079111-0007-fulltext.pdf (323.5Kb)
    Date
    1991
    Author
    El Toukhy, Ahmed [احمد الطوخي]
    Al-Kubaisi, Abdulla H.
    Kenawy, Ibrahim
    Metadata
    Show full item record
    Abstract
    The proton and carbon-13 NMR spectra of some 4-amino-3-alkyl(aryl)-5-thio-1,2,4-triazolines, some 3-alkyl-5-thio- 1,2,4-triazolines and some 4-amino-3-aryl-5-thio-l,2,4-triazoles were measured in DMSO-d6 as solvent. The chemical shift for each proton and carbon in these compounds were assigned. The 'H, chemical shift of N-H protons of the thioamide group and the "C chemical shift of C(3) in the triazolines were found to be sensitive to the substituent R (alkyi or aryl) at C(3), and correlated to Taft substituent constant CT*. The deprotonation constants p^ of the 4-amino-l,2,4-triazolines were correlated linearly with the proton chemical shift, 8, of the thioamide N-H protons.
    DOI/handle
    http://hdl.handle.net/10576/10346
    Collections
    • Qatar University Science Journal - [From 1981 TO 2007] [‎770‎ items ]

    entitlement


    Qatar University Digital Hub is a digital collection operated and maintained by the Qatar University Library and supported by the ITS department

    Contact Us | Send Feedback
    Contact Us | Send Feedback | QU

     

     

    Home

    Submit your QU affiliated work

    Browse

    All of Digital Hub
      Communities & Collections Publication Date Author Title Subject Type Language Publisher
    This Collection
      Publication Date Author Title Subject Type Language Publisher

    My Account

    Login

    Statistics

    View Usage Statistics

    About QSpace

    Vision & Mission QSpace policies

    Help

    Item Submission Publisher policiesUser guides FAQs

    Qatar University Digital Hub is a digital collection operated and maintained by the Qatar University Library and supported by the ITS department

    Contact Us | Send Feedback
    Contact Us | Send Feedback | QU

     

     

    Video