Talk:Radical (chemistry)

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"Free radical" redirects here (intro bio topic) - tameeria 20:38, 5 May 2007 (UTC)
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"Free radical" redirects here (intro bio topic) - tameeria 20:38, 5 May 2007 (UTC)
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Contents

[edit] excuse

excuse me there...I have an assignment about acid radicals and i tried to search for it on the wikipedia but all i could find was radicals as a whole...I'd be pleased if anyone could add some information about it...or even send me any article that explains exactly what are the acid radicals..thank you please contact : ramo005@hotmail.com —Preceding unsigned comment added by 196.205.193.125 (talk) 13:54, 19 October 2007 (UTC)

[edit] Ability to understandthe article

I hope you take this to be constuctive and friendly criticism, but i found the article very hard to understand, perhaps others feel the same. Its obvious the author(s) of this article spent a great deal of time and effort to write the article. Could it be put more into "laymans" terms to help other appreciate the subject more?

Thanks and best wishes

I changed to to combaine what was on Radical (chemistry) and Free Radical and formated it. They should be merged, forwarding Free radical to here. Zwa 03:18, 24 Jun 2005 (UTC)

This page isn't particularly well organised/explained, insomuch as it talks about two different meanings of the word radical in chemistry. It would seem better to me to have a disambiguation page for this with a link to the exsisting Free radical page which is far more comprehensive, and another to a slightly expanded page explaining the use of the word in the sense of a substituent. --ChemRad 23:53, 22 Feb 2005 (UTC)

[edit] vote for merge with free radical

this article should be merged, rikXL 21:19, 22 May 2005 (UTC)

[edit] Free radicals?

I thought free radicals is what happens when you dont put leftists in jail... :-)

Dullfig 20:03, 13 August 2006 (UTC)

[edit] What molecular species are you talkin' 'bout, Willis?

>>In chemistry, radicals (often referred to as free radicals) are atomic or molecular species

I'm not a chemist, but I've never heard of an atomic or molecular species before. If there is such a thing in chemistry, it should be linked to definition. If not, then that's some bad word choice.

It is clear that you are not a chemist then. "atomic or molecular species" is a very commonly used term in chemistry.

[edit] Are radicals always uncharged?

I think it is untrue to suggest that radicals are uncharged. Radicals can be charged.

http://pubs.acs.org/cgi-bin/abstract.cgi/jpcbfk/2002/106/i40/abs/jp026591s.html

http://pubs.acs.org/cgi-bin/abstract.cgi/jpchax/1977/81/i17/f-pdf/f_j100532a018.pdf?sessid=6006l3

http://adsabs.harvard.edu/abs/2000SPIE.4061..154F

The "uncharged" has got to go. Superoxide is both an anion and a free radical, the charge is irrelevant. Jasoninkid

[edit] Observational Database?

A large observational database of many different atmospheric constituents including radicals from a host of platforms is available. It is of general use. Do you think it should be added to the article text? Dlary


[edit] improper referrals

The section titled "Elimination of systemic free radicals" contains the sentence "Since reactive oxidative species (ROS) like sunlight and carcinogens lead to the formation of free radicals, inhibition of free radicals therefore decreases the risk of tumoric growth." Sunlight is certainly not a free radical and not all carcinogens are either. This sentence makes no logical sense and should be re-written by the author to better express their argument. 24.210.141.199 23:47, 10 March 2007 (UTC)

There are so many errors in this pare it should just be dieted. Jasoninkid

[edit] Diagnostics

If memory serves Spin Traps are usually used in EPR experiments with free radicals should a part be written on them? Jasoninkid

[edit] Formation

Free radicals do not half to be created from a broken covalent bond, although they can, they can also be made by one e- reduction or oxidation of a atom or molecule, this line needs to be fixed. Jasoninkid

What is this obsession with no charge, "all species" should be most at most. Jasoninkid

They can also be created by a single electron being knocked out of an atom or molecule by high energy collisions (eg: cosmic rays). --128.243.220.22 (talk) 16:41, 22 February 2008 (UTC)

[edit] Combustion

O2 is not a radical. Jasoninkid


O2 is a radical, the MO diagram shows two unpaired electrons, hence O2 is paramagnetic. —Preceding unsigned comment added by 196.207.35.245 (talk) 11:41, 16 November 2007 (UTC)

[edit] loose definition

Jasoninkid wrote many suggestion about what is radicals. I think there are two definition of radical. From the GLOSSARY OF TERMS USED IN PHYSICAL ORGANIC CHEMISTRY (IUPAC Recommendations 1994)[1] radicals are molecules which have unpaired electron. On the other hand, according to recent trend at some fierld of chemistry, definition of radical contains the any chemically unstable molecules such as singlet state of biradical, ion and so on. I added about this in the section of "Loose definition of radicals" this article. Please read and develop it.--Jingxin 01:26, 19 April 2007 (UTC)

[edit] New "Free radical reaction" article needed

Free radical reaction needs to be created; free-radical reactions are a huge topic in chemistry; selectivity, homolysis and soforth is huge. 212.219.39.146 09:16, 24 April 2007 (UTC)

Can someone please check the image supplied in the first paragraph? It looks incorrect... 212.219.39.146 11:27, 24 April 2007 (UTC)
The same question was already posted on commons:Image talk:Radical.svg. See answer on commons. Annabel 18:07, 25 April 2007 (UTC)

this is not to be a good article for radicals —Preceding unsigned comment added by 59.94.253.213 (talk) 05:03, 2 September 2007 (UTC)