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Chemistry Forums for Students => Organic Chemistry Forum => Topic started by: umalaya on May 25, 2010, 06:57:22 AM

Title: Why sometime there is a doublet band in FTIR refer to the same molecule?
Post by: umalaya on May 25, 2010, 06:57:22 AM
Hi,

Can anyone share with me that why sometime there is a double band or triplet band in the FTIR spectrum refer to the same molecule vibration?

Thank you very much...
Title: Re: Why sometime there is a doublet band in FTIR refer to the same molecule?
Post by: marquis on May 25, 2010, 08:06:15 PM
In a molecule like polyethylene, the doublets indicate crystalinity. 
Title: Re: Why sometime there is a doublet band in FTIR refer to the same molecule?
Post by: umalaya on May 26, 2010, 02:38:18 AM
hi, thanks... but why a crystalinity shows a doublet bands?