JSON and Mesomeric effect: Difference between pages

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The '''mesomeric effect''' or '''resonance effect''' in [[chemistry]] is a property of [[substituent]]s or [[functional group]]s in a [[chemical compound]]. The effect is used in a qualitative way and describes the electron withdrawing or releasing properties of substituents based on relevant [[resonance structure]]s and is symbolized by the letter '''M'''. The mesomeric effect is negative ('''-M''') when the substituent is an electron-withdrawing group and the effect is positive ('''+M''') when based on resonance the substituent is an electron releasing group.

'''JSON''', which stands for "'''J'''ava'''S'''cript '''O'''bject '''N'''otation", is a lightweight data interchange format. '''JSON''' has the advantage, over [[XML]], as a data interchange format in that it can be trivially parsed, by JavaScript, with JavaScript's built in [[eval]]() procedure. (This is important because of [[JavaScript]]'s ubiquitousness amoung [[web browsers]].) '''JSON''' is JavaScript's [[object literal]] format.

*Examples of -M substituents: [[acetyl]] (UPAC ethanoyl) - [[nitrile]] - [[nitro]]

== Using JSON ==

*Examples of +M substituents: [[alcohol]] - [[amine]]

'''JSON''' is useful as a data-interchange format because it can be trivially parsed, by JavaScript built in [[eval]]() procedure. For example:

The net electron flow from or to the substituent is determined also by the [[inductive effect]]. It's important to note that the mesomeric effect as a result of p - orbital overlap (resonance) has absolutely no effect on this inductive effect, as the inductive effect is purely to do with the [[electronegativity]] of the atoms and their structural chemistry (which atoms are connected to which).

eval("the_object = " + json_data + ";");

The concepts of mesomeric effect, '''mesomerism''' and '''mesomer''' were introduced by [[Christopher Kelk Ingold|Ingold]] in 1938 as an alternative to the [[Linus Pauling|Pauling's]] synonymous concept of [[resonance effect|resonance]] <ref>''If It's Resonance, What Is Resonating?'' Kerber, Robert C. . J. Chem. Educ. '''2006''' 83 223. [http://www.jce.divched.org/Journal/Issues/2006/Feb/abs223.html Abstract]</ref>. Mesomerism is in this context is often encountered in German and French literature but in English literature the term resonance dominates.

== JSON Pronunciation ==

'''JSON''' is pronounced like the name "Jason".

== External Links links==

* IUPAC [[Gold Book]] [http://www.crockfordiupac.comorg/JSONgoldbook/M03844.pdf JSON Websitedefinition]

* [http://json-rpc.org/ JSON-RPC]

== UsingSee JSONalso ==

* [[List of publications in chemistry#Organic chemistry|Important publications in organic chemistry]]

== References ==

<references />

[[Category:Chemical bonding]]

[[de:Mesomerer Effekt]]