|
|
| Line 1: |
Line 1: |
| In [[chemistry]], the '''Effective Molarity''' (denoted ''EM'')<ref name=Kirby>{{cite book|last=Kirby, AJ in|title=Advances in Physical Organic Chemistry|year=1980|publisher=Academic Press|location=London|isbn=9780120335176|pages=183–278}}</ref> is defined as the ratio between the first-order rate constant of an [[intramolecular reaction]] and the second-order rate constant of the corresponding intermolecular reaction (''Kinetic Effective Molarity'')<ref name=Kirby /><ref>{{cite book|last=Dougherty|first=Eric V. Anslyn ; Dennis A.|title=Modern physical organic chemistry|year=2006|publisher=University Science Books|location=Sausalito, Calif.|isbn=9781891389313|pages=496|edition=Dodr.}}</ref> or the ratio between the [[equilibrium constant]] of an [[intramolecular reaction]] and the [[equilibrium constant]] of the corresponding intermolecular reaction (''Thermodynamic Effective Molarity'').<ref name=Kirby /><ref>{{cite journal|last=Hunter|first=Christopher A.|coauthors=Anderson, Harry L.|title=What is Cooperativity?|journal=Angewandte Chemie International Edition|date=28 September 2009|volume=48|issue=41|pages=7488–7499|doi=10.1002/anie.200902490}}</ref>
| | I'm Merissa (22) from Zevenbergen, Netherlands. <br>I'm learning Spanish literature at a local college and I'm just about to graduate.<br>I have a part time job in a university.<br>, https://twitter.com/playdohvideos<br><br>My weblog: [https://twitter.com/playdohvideos Surprise Eggs unboxing toys] |
| | |
| <math>EM_{kinetic} = {k_{intramolecular} \over k_{intermolecular}}</math> | |
| | |
| <math>EM_{thermo} = {K_{intramolecular} \over K_{intermolecular}}</math>
| |
| | |
| EM has the dimension of concentration. High EM values always indicate greater ease of intramolecular processes over the corresponding intermolecular ones. Effective molarities can be used to get a deeper understanding of the effects of intramolecularity on reaction courses.<ref>{{cite journal|last=Krishnamurthy|first=Vijay M.|coauthors=Semetey, Vincent; Bracher, Paul J.; Shen, Nan; Whitesides, George M.|title=Dependence of Effective Molarity on Linker Length for an Intramolecular Protein−Ligand System|journal=Journal of the American Chemical Society|date=1 February 2007|volume=129|issue=5|pages=1312–1320|doi=10.1021/ja066780e}}</ref> In last decades, the frequency of use of effective molarity in scientific literature has shown a marked decrease, because this formalism is being progressively replaced by more important [[physical quantities]].
| |
| | |
| ==See also==
| |
| *[[Cyclic compound]]
| |
| *[[Macrocycle]]
| |
| *[[Intramolecular reaction]]
| |
| *[[Polymerization]]
| |
| | |
| ==References==
| |
| | |
| {{Reflist}}
| |
| | |
| [[Category:Physical organic chemistry]]
| |
Latest revision as of 01:19, 17 February 2014
I'm Merissa (22) from Zevenbergen, Netherlands.
I'm learning Spanish literature at a local college and I'm just about to graduate.
I have a part time job in a university.
, https://twitter.com/playdohvideos
My weblog: Surprise Eggs unboxing toys