ChemSiddiqui Posted October 23, 2008 Share Posted October 23, 2008 hi all, I just wanted to ask what the fragmentation pattern of oxalic acid will be. Its not a homework question so I think its appropriate for this section. I think that the m/z = 17 corresponding to OH will be lost leaving the fragment C2HO+ behind. I can't think of the other fragment for it. Any idea folks! Link to comment Share on other sites More sharing options...
hermanntrude Posted October 23, 2008 Share Posted October 23, 2008 here's a good website for that type of thing: sheffield chemputer isotope pattern calculator Link to comment Share on other sites More sharing options...
ChemSiddiqui Posted October 23, 2008 Author Share Posted October 23, 2008 thanks hermanntrude! Appreciate it! Link to comment Share on other sites More sharing options...
hermanntrude Posted October 23, 2008 Share Posted October 23, 2008 did it work? when i tried it, I couldnt get it to respond. I thought perhaps their servers were down Link to comment Share on other sites More sharing options...
ChemSiddiqui Posted October 31, 2008 Author Share Posted October 31, 2008 no herm it didn't. I just said thank you as a gratitute of your intention to help. I did all the calculations myself and filled pages of answer (it wan't just oxalic acid whose fragementation pattern I was after!!!!!!). Link to comment Share on other sites More sharing options...
hermanntrude Posted October 31, 2008 Share Posted October 31, 2008 i used to use that all the time... i wonder what went wrong... it's a shame Link to comment Share on other sites More sharing options...
ChemSiddiqui Posted November 1, 2008 Author Share Posted November 1, 2008 so it did work then(at least use to) .....yeh it is a shame it did look like a good program to use Link to comment Share on other sites More sharing options...
John Cuthber Posted November 1, 2008 Share Posted November 1, 2008 Does this help? http://www.massbank.jp/jsp/Dispatcher.jsp?type=disp&id=PR010022&site=1 Link to comment Share on other sites More sharing options...
hermanntrude Posted November 20, 2008 Share Posted November 20, 2008 OK I just checked and the chemputer is back up and running. It doesnt do fragmentation patterns but it DOES do isotopic patterns here's the result for oxalic acid. Better late than never: mass % 90 100.0 __________________________________________________ 91 2.3 _ 92 0.8 93 0.0 Link to comment Share on other sites More sharing options...
Recommended Posts
Create an account or sign in to comment
You need to be a member in order to leave a comment
Create an account
Sign up for a new account in our community. It's easy!
Register a new accountSign in
Already have an account? Sign in here.
Sign In Now