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- etimología
Qué (quién) es F-block metallocene - definición
F-block metallocene
In organometallic chemistry, f-block metallocenes are a class of sandwich compounds consisting of an f-block metal and a set of electron-rich ligands such as the cyclopentadienyl anion.
Metallocene
![[[Ball-and-stick model]] of a metallocene [[molecule]] where the cyclopentadienyl anions are in a [[staggered conformation]]. The purple ball in the middle represents the metal cation.](https://commons.wikimedia.org/wiki/Special:FilePath/Ferrocene-from-xtal-3D-balls.png?width=200 "[[Ball-and-stick model]] of a metallocene [[molecule]] where the cyclopentadienyl anions are in a [[staggered conformation]]. The purple ball in the middle represents the metal cation.")
COMPOUNDS TYPICALLY CONSISTING OF TWO CYCLOPENTADIENYL ANIONS BOUND TO A METAL CENTER
Metallocenes; Metallocene polymer
A metallocene is a compound typically consisting of two cyclopentadienyl anions (, abbreviated Cp) bound to a metal center (M) in the oxidation state II, with the resulting general formula Closely related to the metallocenes are the metallocene derivatives, e.g.
Block (permutation group theory)
TERM IN MATHEMATICS AND GROUP THEORY
Block system
In mathematics and group theory, a block system for the action of a group G on a set X is a partition of X that is G-invariant. In terms of the associated equivalence relation on X, G-invariance means that
