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Chemistry Forums for Students => Organic Chemistry Forum => Organic Spectroscopy => Topic started by: pdark1987 on July 21, 2014, 08:26:42 PM

Title: Help figure out my unknown PLz
Post by: pdark1987 on July 21, 2014, 08:26:42 PM
i look around and cant seem to figure out what this unknown is..
i figure this much out that it has 9 carbons n 9 hydrogens
its refractive index @ 24 degree Celsius 1.4950 expermintal
also not sure what how i do this part. Correction Factor  = t * 0.00045 = (Rm Temp – 20) * 0.00045

 the experimental Bp was 98 degrees Celsius.

https://answers.yahoo.com/question/index?qid=20140720150021AAGQ2qZ (https://answers.yahoo.com/question/index?qid=20140720150021AAGQ2qZ)
Title: Re: Help figure out my unknown PLz
Post by: Dan on July 22, 2014, 03:08:13 AM
The images are too small to see properly.

Post the spectra using img tags like this: [img]http://image uri[/img] or upload images as attachments (click the "Additional Options..." tab below the edit field in the reply window) - please do not link to external image hosting websites. For more information on formatting posts correctly, click here (http://www.chemicalforums.com/index.php?topic=59314.msg230001#msg230001)
Title: Re: Help figure out my unknown PLz
Post by: pdark1987 on July 22, 2014, 12:42:34 PM
that the pix, i will upload the unknow list that i have..
the info that i have is that my compound has 2 signals in proton nmr one in the aromatic area and other is around 2ppm. from ir spec i see ring overtone and c-h aliphatic and aromatic stretching. but i dunno how to tell which compound are aromatic from the list?
Title: Re: Help figure out my unknown PLz
Post by: pdark1987 on July 22, 2014, 12:45:12 PM
these are the list of unknowns..
Title: Re: Help figure out my unknown PLz
Post by: Dan on July 22, 2014, 03:28:15 PM
Quote from: pdark1987 on July 21, 2014, 08:26:42 PM
i figure this much out that it has 9 carbons n 9 hydrogens

Based on what? The 1H integrals look like 5:3 to me (but I didn't get a ruler out), and I don't see a 13C.

Re: list of unknowns - what evidence do you have for a carbonyl?
Title: Re: Help figure out my unknown PLz
Post by: pdark1987 on July 23, 2014, 01:11:05 AM
yah actually scratch that 9c 9h info i think i was wrong on that part.. n also we didnt get a 13c nmr
Title: Re: Help figure out my unknown PLz
Post by: discodermolide on July 24, 2014, 05:26:29 AM
The NMR is that of a very simple compound, it is not on the lists you provided, unless I missed it!