Introduction to Structure Determination  
Combined: Introduction  
Introduction   Infrared   Ultraviolet   Mass Spectrometry   NMR   Crystallography   Combined  
After working through the theory and examples for each technique, you can now self assess your understanding of IR, NMR and UV / Visible spectroscopy and mass spectrometry. Complete the problems which contain information from several techniques on the same compound.

Characteristic Chemical Shifts
Characteristic Chemical Shifts
Characteristic IR Absorption Frequencies
1. A compound has a strong absorption near 1720 cm-1 in its infrared spectrum, no strong absorption in its UV spectrum and a parent ion at m/z 86 in its mass spectrum. Its 1H NMR spectrum is given below. Which of the structures below is consistent with these data.
(a) 3-methylbutan-2-one   (b) propan-3-one
(c) 2-methylbutanal   (d) 2-methylenebutan-1-ol
(e) (E)-2-methylbut-2-en-1-ol   (f) (Z)-2-methylbut-1-en-1-ol

(This question is for self assessment and your answer and score will not be recorded.)

Jump to: Q2, Q3, Q4

 © Prof Adam Bridgeman, School of Chemistry, The University of Sydney, 2020