Mass Spectra Interpretation: AMINES









No. of Questions= 7 








ELECTRON IMPACT MASS SPECTROMETRY PRODUCED THE SPECTRA BELOW. MANY PEAKS ARE LABELLED TO AID INTERPRETATION: M/Z (RELATIVE ABUNDANCE). 
LOOK AT THE HINTS AND FOLLOW THE WEB REFERENCE LINK FOR HELP. YOU WILL NEED A PERIODIC TABLE, A TABLE OF COMMON ISOTOPES (WHICH YOU CAN FIND IN THE WEB REFERENCE), A CALCULATOR, AND SCRATCH PAPER TO WORK THIS QUIZ.













     1. 

Compounds containing C, H, O atoms will have molecular weights that are even numbers.  However, if one nitrogen is added the molecular weight will be an odd number.  Test this by calculating the molecular weight of ethylamine (CH3CH2NH2).
        
    
        



    

    





      










    
    
    

    


    

    

    
    
        a)
        
    44
        
    



    

    

    
    
        b)
        
    45
        
    



    

    

    
    
        c)
        
    46
        
    



    

    

    

    
    







    
    
        

        








     2. 

Choose the compound that this spectrum represents.
        
    
        



    

    



     

      










    
    
    
Click on image to enlarge


    		


    

    

    
    
        a)
        
    1-hexanamine
        
    



    

    

    
    
        b)
        
    1-pentanamine
        
    



    

    

    
    
        c)
        
    N-methyl-1-butanamine
        
    



    

    

    
    
        d)
        
    2-methyl-2-butanamine
        
    



    

    

    
    
        e)
        
    1-butanamine
        
    




    
    

    
    







    
    
        

        








     3. 

Choose the compound that this spectrum represents.
        
    
        



    

    



     

      










    
    
    
Click on image to enlarge


    		


    

    

    
    
        a)
        
    1-hexanamine
        
    



    

    

    
    
        b)
        
    N-methyl-1-butanamine
        
    



    

    

    
    
        c)
        
    1-pentanamine
        
    



    

    

    
    
        d)
        
    2-methyl-2-butanamine
        
    



    

    

    
    
        e)
        
    1-butanamine
        
    




    
    

    
    







    
    
        

        








     4. 

Find the alkyl LOSS ion series in the spectra shown below.  (Check the hint!)
        
    
        



    

    



     

      










    
    
    
Click on image to enlarge


    		


    

    

    
    
        a)
        
    15, 29, 43
        
    



    

    

    
    
        b)
        
    30, 44, 58
        
    



    

    

    
    
        c)
        
    none
        
    



    

    

    

    
    







    
    
        

        








     5. 

From this same spectrum, choose the compound that the spectrum represents.
        
    
        



    

    



     

      










    
    
    
Click on image to enlarge


    		


    

    

    
    
        a)
        
    methylhydrazone acetaldehyde
        
    



    

    

    
    
        b)
        
    1-pentanamine
        
    



    

    

    
    
        c)
        
    diethylamine
        
    



    

    

    
    
        d)
        
    2-methyl-2-propanamine
        
    



    

    

    
    
        e)
        
    1-propanamine
        
    




    
    

    
    







    
    
        

        








     6. 

Choose the compound that this spectrum represents.
        
    
        



    

    



     

      










    
    
    
Click on image to enlarge


    		


    

    

    
    
        a)
        
    N-methyl-1-butanamine
        
    



    

    

    
    
        b)
        
    2-methyl-2-butanamine
        
    



    

    

    
    
        c)
        
    1-pentanamine
        
    



    

    

    
    
        d)
        
    1-hexanamine
        
    



    
    

    

    
    







    
    
        

        








     7. 

Choose the compound that this spectrum represents.
        
    
        



    

    



     

      










    
    
    
Click on image to enlarge


    		


    

    

    
    
        a)
        
    1-methyl-1H-pyrrole
        
    



    

    

    
    
        b)
        
    aniline
        
    



    

    

    
    
        c)
        
    benzylamine
        
    



    

    

    
    
        d)
        
    2,4-hexadienenitrile
        
    



    

    

    
    
        e)
        
    2-methyl-benzenamine
        
    




    
    

    
    







    
    
        

        


















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