Editing Isomerization (section)

===Inorganic and organometallic chemistry===
:[[File:Fp2-isomerization.png|frameless|440x440px|center]]
The compound with the formula [[Cyclopentadienyliron dicarbonyl dimer|{{chem2|(C5H5)2Fe2(CO)4}}]] exists as three isomers in solution.  In one isomer the CO ligands are terminal.  When a pair of CO are [[bridging ligand|bridging]],
cis and trans isomers are possible depending on the location of the [[cyclopentadienyl ligand|C<sub>5</sub>H<sub>5</sub> groups]].<ref name=":2">{{Cite journal|last1=Harris|first1=Daniel C.|last2=Rosenberg|first2=Edward|last3=Roberts|first3=John D.|date=1974|title=Carbon-13 nuclear magnetic resonance spectra and mechanism of bridge–terminal carbonyl exchange in di-''µ''-carbonyl-bis[carbonyl(''η''-cyclopentadienyl)iron](Fe–Fe) [{(''η''-C<sub>5</sub>H<sub>5</sub>)Fe(CO)<sub>2</sub>}<sub>2</sub>]; ''cd''-di-''µ''-carbonyl-''f''-carbonyl-''ae''-di(''η''-cyclopentadienyl)-''b''-(triethyl-phosphite)di-iron(Fe–Fe) [(''η''-C<sub>5</sub>H<sub>5</sub>)<sub>2</sub>Fe<sub>2</sub>(CO)<sub>3</sub>P(OEt)<sub>3</sub>], and some related complexes|journal=Journal of the Chemical Society: Dalton Transactions|language=en|issue=22|pages=2398–2403|doi=10.1039/DT9740002398|issn=0300-9246|url=https://authors.library.caltech.edu/12272/1/HARjcsdt74.pdf}}</ref>

Another example in [[organometallic chemistry]] is the [[linkage isomer]]ization of decaphenylferrocene, {{chem2|[(\h{5}C5[[phenyl|Ph]]5)2Fe]}}.<ref>{{cite journal|last1=Brown|first1=K. N.|last2=Field|first2=L. D.|last3=Lay|first3=P. A.|last4=Lindall|first4=C. M.|last5=Masters|first5=A. F.|title=(&eta;<sup>5</sup>-Pentaphenylcyclopentadienyl){1-(&eta;<sup>6</sup>-phenyl)-2,3,4,5-tetraphenylcyclopentadienyl}iron(II), [Fe(&eta;<sup>5</sup>-C<sub>5</sub>Ph<sub>5</sub>){(&eta;<sup>6</sup>-C<sub>6</sub>H<sub>5</sub>)C<sub>5</sub>Ph<sub>4</sub>}], a linkage isomer of decaphenylferrocene|journal=[[Chemical Communications|J. Chem. Soc., Chem. Commun.]]|issue=5|pages=408–410|year=1990|doi=10.1039/C39900000408}}</ref><ref>{{cite journal|last1=Field|first1=L. D.|last2=Hambley|first2=T. W.|last3=Humphrey|first3=P. A.|last4=Lindall|first4=C. M.|last5=Gainsford|first5=G. J.|last6=Masters|first6=A. F.|last7=Stpierre|first7=T. G.|last8=Webb|first8=J.|title=Decaphenylferrocene|journal=Aust. J. Chem.|volume=48|issue=4|pages=851–860|year=1995|doi=10.1071/CH9950851}}</ref>

[[File:Formation of decaphenylferrocene from its linkage isomer.svg|380px|center|Formation of decaphenylferrocene from its linkage isomer]]