Editing Metallocene (section)

==Applications==<!--chromocene has been used as a precatalyst, perhaps-->
Many derivatives of early metal metallocenes are active catalysts for [[olefin polymerization]]. Unlike traditional and still dominant heterogeneous [[Ziegler–Natta]] catalysts, metallocene catalysts are homogeneous.<ref name="Metallocenes"/> Early metal metallocene derivatives, e.g. [[Tebbe's reagent]], [[Petasis reagent]], and [[Schwartz's reagent]] are useful in specialized organic synthetic operations.

===Potential applications===<!-- none of these are commercial-->
The ferrocene/[[ferrocenium]] [[biosensor]] has been discussed for determining the levels of glucose in a sample electrochemically through a series of connected [[redox]] cycles.<ref name="Metallocenes"/>

Metallocene dihalides [Cp<sub>2</sub>MX<sub>2</sub>] (M = Ti, Mo, Nb) exhibit anti-tumor properties, although none have proceeded far in clinical trials.<ref>{{cite journal|journal= [[J. Am. Chem. Soc.]]|doi= 10.1021/ja00024a002|title= Metallocene antitumor agents. Solution and solid-state molybdenocene coordination chemistry of DNA constituents|year= 1991|last1= Kuo|first1= L. Y.|last2= Kanatzidis|first2= M. G.|last3= Sabat|first3= M.|last4= Marks|first4= T. J.|volume= 113|issue= 24|pages= 9027–9045|last5= Marks|first5= Tobin J.}}</ref>