User talk:E kwan

Histidine
Welcome to Wikipedia Chem. Regarding your recent edit, I recommend that you try to revise your addition to histidine. Most of us write and rewrite our copy, so you might as well get used to the revision cycle. You are most qualified to do the revision/editing. Otherwise less specialized folks will have to deal with your writing. Your level of detail seems rather specialized don't you think? Paramagnetic contribution to chem shifts? Is one to assume that you discussing about NMR spectroscopy (as we tell students patiently, "one cannot measure an NMR") if so it was unclear because your section is so jargon-filled. Perhaps you could consider a subheader (marked with flanking === 's on "NMR spectroscopy" of histidine. Just some suggestions.--Smokefoot (talk) 17:48, 17 February 2009 (UTC)

Talk:Aldol reaction
There is a comment at Talk:Aldol reaction that seems to refer to an image that you created. Can you please take a look? Thank you. -- Ed (Edgar181) 16:48, 13 December 2010 (UTC)

Proposed Image Deletion
A deletion discussion has just been created at Category talk:Unclassified Chemical Structures, which may involve one or more orphaned chemical structures, that has you user name in the upload history. Please feel free to add your comments.  Ron h jones (Talk) 22:52, 10 June 2011 (UTC)

File:Rxn2.gif listed for deletion
A file that you uploaded or altered, File:Rxn2.gif, has been listed at Files for deletion. Please see the to see why this is (you may have to search for the title of the image to find its entry), if you are interested in it not being deleted. Thank you. Bulwersator (talk) 13:59, 1 January 2012 (UTC)

File:Rxn1.gif listed for deletion
A file that you uploaded or altered, File:Rxn1.gif, has been listed at Files for deletion. Please see the to see why this is (you may have to search for the title of the image to find its entry), if you are interested in it not being deleted. Thank you. Leyo 11:59, 5 January 2012 (UTC)

LiN(tms)2
You probably do not want to intervene with our ongoing struggle with this particular IP vandal, but maybe I misunderstood. In general, we discourage images that show naked cations, unless no other image exists. As you will learn from talking to your teachers, Li+ does not exist except in the gas phase and the material being discussed is very covalent. But we are always open to suggestions.

I don't know anything about the IP dispute to which you're referring, but actually LiHMDS is sufficiently electronically stabilized to exist at least partially in monomeric form in many solvents. It may well have solvent ligands, but I think a picture showing the structure of an LiHMDS monomer is, in fact, informative.

Now, I give my full name, and I'm a lecturer at Harvard University and hold a Ph.D. in organic chemistry from there. Perhaps you'd care to give your name and credentials? Eugene Kwan (talk) 05:17, 28 January 2013 (UTC)

Aldol reaction
Hello Eugene, I really appreciate your contributions to the aldol reaction. It's great! Do you still have the images? If so, could you have them all in high-resolution PNG or SVG? (ChemDraw SVG usually gives errors, though.) Or are you too busy with academic stuff? Because in that case, we'll happily do it for you (https://en.wikipedia.org/wiki/Wikipedia:WikiProject_Chemistry/Image_Request). Many thanks in advance! Cheers. Georginho (talk) 07:56, 4 October 2013 (UTC)

I have some, but not all, of the original ChemDraws. How do I send them to you? Eugene Kwan (talk) 13:23, 8 October 2013 (UTC)

You can send them via e-mail: georginho_juventusygr@yahoo.co.id. Or if you have Outlook.com, you can upload them to your SkyDrive and share them with me (change yahoo.co.id to hotmail.com). Or you can upload them to http://www.sendspace.com and send me the link so that I can download them. Whichever is convenient to you. Cheers. Georginho (talk) 18:35, 3 November 2013 (UTC)

Hello, important ongoing discussion
Dr K …concerning the future direction of the Natural Products article, please see the "Class" section in that article, and skim remaining. Article is in a current sorry state, and it is apparently avoided for its current structure and constraints. See developing discussion at. Perhaps you have a view to express. You can see my User page, hidden though it is—un-gray by clicking on Edit tab—to see who I am. Le Prof Leprof 7272 (talk) 18:30, 3 June 2014 (UTC)

Lone pair article
Hi Eugene,

I'm not sure if you still edit Wikipedia; if you do, I would value your input on the debate between Landis and Shaik regarding the "correctness" (whatever that really means) of taking linear combinations to get equivalent rabbit ear orbitals for water cited in the lone pair article. My own understanding of computational chemistry and MO theory is not good enough to fully appreciate the nuances involved. I hope you would be able to comment on the merits of the arguments on both sides.

Best wishes, ymw Alsosaid1987 (talk) 04:48, 12 May 2018 (UTC)

p.s. Hope things are going well -- I learned many things from you in your TF section.