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Topic: About IR/Raman spectra and character tables.  (Read 5951 times)

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Offline XIXTRUMP

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About IR/Raman spectra and character tables.
« on: December 12, 2010, 02:37:16 PM »
I need a guide for predict active signals in IR/raman spectra using character tables, i don't remember it and I always hate that.

Anyone helps me?


Offline TheUnfocusedOne

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Re: About IR/Raman spectra and character tables.
« Reply #1 on: December 14, 2010, 09:43:31 AM »
I know this dosen't help you short term, but you might want to pick up a solid inorganic text with character table explinations in it.  I think Miessler and Tarr do a pretty good job explaining it, though they lack enough examples (in my opinion).

http://mutuslab.cs.uwindsor.ca/macdonald/250-LectureNotes/Fall2002/Bonding-Notes5.pdf
"Like most heavy metals, thallium is highly toxic and should not be used on breakfast cereal"

Offline NTUstudent

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Re: About IR/Raman spectra and character tables.
« Reply #2 on: December 15, 2010, 09:01:45 AM »
You just look at the right of charac table.
if there is letters x or y or z, they will be IR active!

Offline Fleaker

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Re: About IR/Raman spectra and character tables.
« Reply #3 on: December 15, 2010, 09:12:24 PM »
Just remember what's IR active is not Raman active and vice versa (or so I recall, I'm not physical chemist and I'm too tired to look through my old texts from university).
Neither flask nor beaker.

Offline XIXTRUMP

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Re: About IR/Raman spectra and character tables.
« Reply #4 on: December 19, 2010, 10:44:30 PM »
I just remember, thanks, but I still hate it. Tedious and useless work ¬¬

We use "Cotton, Chemical applications of groups theory"  book as guide... Disgusting book. On a test I had to solve bonds orders using proyection operators, huckel's approximation. I always has doubted about how useful for chemistry is that...

Wish me luck, I have the last exam of this on thuesday. s*** happens xd

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