Reaction intermediate - Revision history

Spencer Williams at 22:31, 17 October 2021

2021-10-17T22:31:16Z

Spencer Williams at 10:08, 1 May 2013

2013-05-01T10:08:32Z

Harry Brumer at 14:17, 17 January 2010

2010-01-17T14:17:16Z

Spencer Williams at 22:29, 6 October 2009

2009-10-06T22:29:58Z

Harry Brumer at 23:33, 27 July 2009

2009-07-27T23:33:28Z

Spencer Williams: New page: * Author: Stephen Withers * Responsible Editor: Spencer Williams ---- An '''intermediate''' in a reaction is a species formed that has a real...

2009-07-10T12:17:10Z

New page: * Author: Stephen Withers * Responsible Editor: Spencer Williams ---- An '''intermediate''' in a reaction is a species formed that has a real...

New page

* Author: [[User:Withers|Stephen Withers]]
* Responsible Editor: [[User:SpencerWilliams|Spencer Williams]]

----

An '''intermediate''' in a reaction is a species formed that has a real lifetime, best defined as being greater than the time for a bond vibration (approx 10<sup>-12 </sup>sec). This will correspond to a minimum in the [[reaction coordinate diagram]] located between the reactant and product. Depending on their lifetimes and the tools available, intermediates can sometimes be trapped and observed by physical and chemical techniques.

[[Image:ReactionCoordinate.png|centre]]

[[Category:Definitions and explanations]]

@@ Line 5: / Line 5: @@
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-An '''intermediate''' in a reaction is a species formed that has a real lifetime, best defined as being greater than the time for a bond vibration (approx 10<sup>-12 </sup>sec). This will correspond to a minimum in the reaction coordinate diagram located between the reactant and product. Depending on their lifetimes and the tools available, intermediates can sometimes be trapped and observed by physical and chemical techniques.
+An '''intermediate''' in a reaction is a species formed that has a real lifetime, best defined as being greater than the time for a bond vibration (approx 10<sup>-14 </sup>sec, ie a few femtoseconds). This will correspond to a minimum in the reaction coordinate diagram located between the reactant and product. Depending on their lifetimes and the tools available, intermediates can sometimes be trapped and observed by physical and chemical techniques.
 [[Image:ReactionCoordinate.png|center|400px]]
 [[Category:Definitions and explanations]]

@@ Line 7: / Line 7: @@
 An '''intermediate''' in a reaction is a species formed that has a real lifetime, best defined as being greater than the time for a bond vibration (approx 10<sup>-12 </sup>sec). This will correspond to a minimum in the reaction coordinate diagram located between the reactant and product. Depending on their lifetimes and the tools available, intermediates can sometimes be trapped and observed by physical and chemical techniques.
-[[Image:ReactionCoordinate.png|centre]]
+[[Image:ReactionCoordinate.png|center|400px]]
 [[Category:Definitions and explanations]]

← Older revision		Revision as of 14:17, 17 January 2010
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		+	{{CuratorApproved}}
	* Author: [[User:Withers\|Stephen Withers]]		* Author: [[User:Withers\|Stephen Withers]]
	* Responsible Curator: [[User:SpencerWilliams\|Spencer Williams]]		* Responsible Curator: [[User:SpencerWilliams\|Spencer Williams]]

@@ Line 1: / Line 1: @@
 * Author: [[User:Withers|Stephen Withers]]
-* Responsible Editor:  [[User:SpencerWilliams|Spencer Williams]]
+* Responsible Curator:  [[User:SpencerWilliams|Spencer Williams]]
 ----