User:OrganoMetallurgy/sandbox

=sandbox=

curie

 * value, value, value,
 * value, value, ...

value type of order

possible compounds to add to my list

 * rubyrin
 * amethyrin
 * Tris(dicyanomethylene)cyclopropane aka Hexacyano[3]radialene
 * 2,3,6,7,10,11-Hexamethoxytriphenylene
 * Isophlorin(s)
 * Truxene
 * trindene
 * pyracylene
 * dithiatetrazocines
 * Bathocuproine
 * Dimethyltin difluoride, Me2SnF2
 * Azupyrene


 * Dithianitronium (hexafluoroarsenate)


 * Sr21Si2O5C6 Might want to do an article about compound with the same of related structures.
 * 2-phosphaethynolate

stable radicals

 * Bis(trifluoromethyl)nitroxide
 * di-tert-butylnitroxide

=Mesomeric betaine= Mesomeric betaines are neutral conjugated molecules which can only be represented by dipolar structures in which both the positive and negative charges are delocalised within the same π-electron system. They cannot be represented by any uncharged covalent structure.

Heterocyclic mesomeric betaines
Examples of heterocyclic mesomeric are pyridinium-3-olates, mesoionic compounds, certain heteropentalenes

Magnetic
Associated concepts
 * ring currents
 * paratropic ring currents are often associated with antiaromaticity
 * diatropic ring currents are


 * Nucleus independent chemical shifts NICS

Energetic
Based on (de)stabization relative to nonaromatic refence system(s).

Geometric

 * Bond length alternation
 * generally smaller in aromatic molecules
 * generally larger in antiaromatic molecules


 * Aromatic rings tend to show smaller deviations from planarity
 * Antiaromatic rings tend to deviate from planarity

Reactivity(?)
Aromatic molecules tend to undergo substitution rather than addition reactions

Electron counting
Huckel's rule

graph stuff
For polycyclic molecules

potential refs
http://pubs.acs.org/doi/abs/10.1021/ed074p132