Editing Dimerization (section)

== Inorganic and organometallic dimers ==
Many molecules and ions are described as dimers, even when the monomer is elusive.

=== Boranes ===
[[File:Borane & Diborane.jpg|thumb|class=skin-invert-image|Borane and diborane]]
[[Diborane]] (B<sub>2</sub>H<sub>6</sub>) is an dimer of [[borane]], which is elusive and rarely observed.  Almost all compounds of the type R2BH exist as dimers.<ref>{{Cite book |last=Shriver |first=Duward |title=Inorganic Chemistry |publisher=W.H. Freeman and Company |year=2014 |isbn=9781429299060 |edition=6th |pages=306–307 |language=English}}</ref>

===Organoaluminium compounds===
[[File:Trimethylaluminium dimer.png|thumb|class=skin-invert-image|Trimethylaluminium dimer]]
[[Organoaluminium chemistry|Trialkylaluminium compounds]] can exist as either monomers or dimers, depending on the [[Steric effects|steric bulk]] of the groups attached. For example, [[trimethylaluminium]] exists as a dimer, but trimesitylaluminium adopts a monomeric structure.<ref name=":0">{{Cite book |last=Shriver |first=Duward |title=Inorganic Chemistry |publisher=W.H. Freeman and Company |year=2014 |isbn=9781429299060 |edition=6th |pages=377–378 |language=English}}</ref>

===Organochromium compounds===
Cyclopentadienylchromium tricarbonyl dimer exists in measureable equilibrium quantities with the monometallic radical {{chem2|(C5H5)Cr(CO)3}}.<ref>{{cite journal |  doi = 10.1021/ja00810a019 | issue = 5| pages = 749–754| title = Unusual structural and magnetic resonance properties of dicyclopentadienylhexacarbonyldichromium| journal = Journal of the American Chemical Society| volume = 96| year = 1974| last1 = Adams| first1 = Richard D.| last2 = Collins| first2 = Douglas E.| last3 = Cotton| first3 = F. Albert}}</ref>