Introduction to Structure Determination  
Infrared: Self Assessment Problems  
Introduction   Infrared   Ultraviolet   Mass Spectrometry   NMR   Crystallography   Combined  
 
  • Introduction
  • The Spectrum
  • Characteristic Frequencies
  • Fingerprint Region
  • Examples
  • Self Assessment Problems
    •
    Characteristic IR Absorption Frequencies
    You will need to consult the characteristic frequencies table.

    5. Enter the condensed formula of a compound which is consistent with the data given.
     
    (a) A substance has a molecular formula of C2H5NO and has IR absorptions at 3500, 3380, 2925 and 1675 cm-1.  
     
    (b) A substance has a molecular formula of C3H6O2 and its IR spectrum shows a broad band at 2500 - 3000 cm-1 and an intense, sharp band at 1715 cm-1.  



    (This question is for self assessment and your answer and score will not be recorded.
    Use the x2 and x2 formatting buttons to add subscripts and superscripts to your chemical formulae.)
    Jump to: Q1, Q2, Q3, Q4


     
     © Prof Adam Bridgeman, School of Chemistry, The University of Sydney, 2024