homeGeek CultureWebstoreeCards!Forums!Joy of Tech!AY2K!webcam

The Geek Culture Forums!


Post New Topic  New Poll  Post A Reply
my profile | directory login | | search | faq | forum home
  next oldest topic   next newest topic
» The Geek Culture Forums!   » Techno-Talking   » Science!   » Feel the Chemistry! (Page 2)

 - UBBFriend: Email this page to someone!  
This topic comprises 2 pages: 1  2 
 
Author Topic: Feel the Chemistry!
Xanthine

Solid Nitrozanium SuperFan!
Member # 736

Member Rated:
5
Icon 1 posted November 14, 2007 17:49      Profile for Xanthine     Send New Private Message       Edit/Delete Post   Reply With Quote 
On a whim, I went in to see if my thesis topic was in the wikipedia. It is. Some of what they had was good, some was garbage. So I fixed up the garbage. Whoever wrote that entry had their facts more or less correct, but it was just badly written and unclear. It looked like they'd read a paper, not understood it, and tried to summarize it. So I fixed it. I felt like I had to because 1) it was my work they screwed up (but they did reference me!) and 2) that particular article shows up when you run the right search in an RNA sequence database I like to use and I just couldn't bear to see my baby in such bad shape. I would have added a better picture as well, but it wasn't intuitively obivous and I didn't have the time to really fsck around. I just couldn't let this one slide.

I've skimmed through other wikipedia entries related to my work and haven't found anything glaringly wrong in the biology. Someone out there is doing a good job of keeping up to date with the literature. I haven't had the nerve to go through the crystallography sections.

--------------------
And it's one, two, three / On the wrong side of the lee / What were you meant for? / What were you meant for?
- The Decemberists

Posts: 7670 | From: the lab | Registered: Mar 2001  |  IP: Logged
GrumpySteen

Solid Nitrozanium SuperFan
Member # 170

Icon 1 posted November 14, 2007 18:35      Profile for GrumpySteen     Send New Private Message       Edit/Delete Post   Reply With Quote 
Xanthine wrote:
I would have added a better picture as well, but it wasn't intuitively obivous and I didn't have the time to really fsck around.

If you can send me links to the picture you'd like and the article in question, I can edit it to change the picture for you.

--------------------
Worst. Celibate. Ever.

Posts: 6364 | From: Tennessee | Registered: Jan 2000  |  IP: Logged
Ashitaka

SuperFan!
Member # 4924

Member Rated:
4
Icon 1 posted November 27, 2007 01:26      Profile for Ashitaka     Send New Private Message       Edit/Delete Post   Reply With Quote 
So did it work?

--------------------
"If they're not gonna make a distinction between Muslims and violent extremists, then why should I take the time to distinguish between decent, fearful white people and racists?"

-Assif Mandvi

Posts: 3093 | From: Switzerland | Registered: Feb 2006  |  IP: Logged
ScholasticSpastic
Highlie
Member # 6919

Member Rated:
5
Icon 1 posted December 24, 2007 16:17      Profile for ScholasticSpastic     Send New Private Message       Edit/Delete Post   Reply With Quote 
Guess I kind of wandered away from the thread... I did attempt the synthesis and I did not make diphenyl oxalate. Whatever I made was orange and solid at room temperature. It does contain benzene-type rings, but that's about all I know- the rings could just be unreacted phenol.

There was water in the reaction mixture and I suspect that it reacted with diphenyl oxalate as it was produced, resulting in a complete loss of product as the diphenyl oxalate would have decomposed to reform phenol and release carbon dioxide gas.

I'm going to try it with a drier mixture next year and tweak my glassware a little to try to remove any water as it's formed. I hope to be left with some actual product as a result. It's a tricky reaction from the starting point I've chosen. The GloStick manufacturers probably use different reagents.

Alterations:
There will be no reflux, the mixture of dry phenol and oxalic acid will be brought to a temperature above 100C prior to addition of an acid catalyst.

H2SO4 instead of HCl- concentrated H2SO4 has less water in it than concentrated HCl.

Hopefully, by removing water from the mixture via distillation I will keep things dry enough to get product out.

Theoretical yield for four grams of oxalic acid is about ten grams of diphenyl oxalate, I'll be happy if I get 2-3 grams out. Still not sure how I'll separate the diphenyl oxalate from the phenol solvent, but as one is a liquid at room temperature while the other is a solid, it's possible that my product may separate itself for me. That's something that I'll probably learn when next I try the reaction.

--------------------
"As in repeating a well-known song, so in instincts, one action follows another by a sort of rhythm; if a person be interrupted in a song, or in repeating anything by rote, he is generally forced to go back to recover the habitual train of thought..." (Darwin, The Origin of Species)

Posts: 540 | From: Vernal, UT | Registered: Jan 2007  |  IP: Logged
quantumfluff
BlabberMouth, a Blabber Odyssey
Member # 450

Member Rated:
5
Icon 1 posted December 24, 2007 22:14      Profile for quantumfluff     Send New Private Message       Edit/Delete Post   Reply With Quote 
Xanthine: This might sound selfish, but you shouldn't be updating the public knowledge base until your own thesis is finished. In an academic world of publish-or-perish it's often more about getting your own ideas out more than adding to the collective knowledge. So, you might want to make sure the wikipedia entries site you correctly, but you don't want to give away unattributed knowledge.
Posts: 2902 | From: 5 to 15 meters above sea level | Registered: Jun 2000  |  IP: Logged


All times are Eastern Time
This topic comprises 2 pages: 1  2 
 
Post New Topic  New Poll  Post A Reply Close Topic    Move Topic    Delete Topic next oldest topic   next newest topic
 - Printer-friendly view of this topic
Hop To:

Contact Us | Geek Culture Home Page

© 2018 Geek Culture

Powered by Infopop Corporation
UBB.classicTM 6.4.0



homeGeek CultureWebstoreeCards!Forums!Joy of Tech!AY2K!webcam