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Chemistry Forums for Students => Organic Chemistry Forum => Topic started by: jiujitsu123 on January 25, 2007, 12:02:47 AM

Title: IR spectrometry Updated with attachment of my cyclohexene
Post by: jiujitsu123 on January 25, 2007, 12:02:47 AM

cyclohexene

Does anyone know the ranges for C-C bonds and C=C bonds

or lead me to a website with the appropriate ranges for the peaks.

We did this in lab.

Title: Re: IR spectrometry
Post by: nag on January 25, 2007, 12:32:44 AM

hello,
you can get some information from this below mentioned web site
http://www.chem.ucla.edu/~bacher/faqs/LabWriteup/example.html

Thank you
T.NAGESHWAR :)

Title: Re: IR spectrometry
Post by: english on January 25, 2007, 08:03:43 AM

C=C should appear around 1600 cm^-1

Title: Re: IR spectrometry
Post by: jiujitsu123 on January 25, 2007, 11:27:07 AM

anyone know how to attach file???

Title: Re: IR spectrometry
Post by: jiujitsu123 on January 25, 2007, 11:40:18 AM

I have peaks at 2913  C-H

one at 2842 C-H



one at 1452

that would be my double bond  right

we just did this today and he said to follow the chart

how do u know if their distinguished peaks if their long or what??  I was just given the chart and i read the stuff on wiekepedia think that correct.

how does it look??
I will show u what i got if someone knows how to add attachment for me and tell me how to do it.  that would be great.

Title: Re: IR spectrometry
Post by: chiralic on January 25, 2007, 12:37:23 PM

Look at this:
http://wps.prenhall.com/wps/media/objects/724/741576/Instructor_Resources/Chapter_13/Text_Images/FG13_22.JPG

Title: Re: IR spectrometry
Post by: english on January 25, 2007, 01:20:49 PM

The main stretches you should focus on are around 2900 cm^-1 for sp³ hybridized C-H stretches, and around
1600 cm^-1 for the alkene.

It might not be exactly 1600 cm^-1. 

Title: Re: IR spectrometry
Post by: jiujitsu123 on January 25, 2007, 04:26:25 PM

I attached the document which shows my IR spec.  How does it look??

only one i think I need to modify is the 1630 that would be my C=C double bond as shown from the attachment.

1452 would be my C-H

2913 would be my C-H
2842 C-H

ttyl.

jenny