User:Dhea Patel/Notebook/Phosphorylation/2012/07/06

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Objective

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NMR Analysis

Just based on the expected chemical structure, I'd expect 4 different aromatic protons in the area around 9-7ppm that would be fairly tall, because there are 4 of each kind of aromatic proton. Two of these types of protons should be triplets because there are two different hydrogens on the carbons neighboring the carbon that the hydrogen is on. There should be 3 peaks that are half as tall as the aromatic protons, with one downfield singlet, a doublet, and a triplet. I assumed that the hydrogens on a carbon neighboring a nitrogen would have experienced a similar effect if the carbon was neighboring an oxygen, so I thought that those hydrogens should be around 2.5-4.5 ppm. The hydrogen from the one OH group should be between 1ppm and 5ppm. The rest of the hydrogens ought to be half as tall as these three peaks, as they are all unique hydrogens.

However, when I googled H' NMR of Ruthenium complexes, the peaks were consistently between 9 and 7 ppm. (for instance: http://www.sciencedirect.com/science?_ob=MiamiCaptionURL&_method=retrieve&_eid=1-s2.0-S0020169311010127&_image=1-s2.0-S0020169311010127-gr1.jpg&_ba=&_fmt=full&_orig=na&_issn=00201693&_pii=S0020169311010127&_acct=C000049872&_version=1&_urlVersion=0&_userid=9645794&md5=3f1ac9b2e63bb2c97eeca47e52aae266)

When I googled H' NMR of ATP, I could not find any consistent data to use for comparison.

So, the two spectra that I got yesterday were not consistent with spectra I found on google. However, if the spectra had shifted, like when we ran the ruthenium samples last month, then it looks like a few of the predictions I made may correspond with elements from each spectrum.


Notes

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