Zirconocene

Zirconocene
Names
	IUPAC name Bis(η5-cyclopentadienyl)zirconium
	Other names * Bis(η5-cyclopentadienyl)zirconium(II) Di(cyclopentadienyl)zirconium; [(η5-C5H5)2Zr]; [(Cp)2Zr];
Identifiers
CAS Number	12116-83-5;
3D model (JSmol)	Interactive image;
	InChI InChI=1S/2C5H5.Zr/c21-2-4-5-3-1;/h21-5H;/q2*-1;+2 Key: IDASTKMEQGPVRR-UHFFFAOYSA-N;
	SMILES [CH-]1C=CC=C1.[CH-]1C=CC=C1.[Zr+2];
Properties
Chemical formula	C10H10Zr
Molar mass	221.40 g·mol−1
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

Zirconocene is a hypothetical compound with 14 valence electrons, which has not been observed or isolated. It is an organometallic compound consisting of two cyclopentadienyl rings bound on a central zirconium atom. A crucial question in research is what kind of ligands can be used to stabilize the Cp₂Zr^II metallocene fragment to make it available for further reactions in organic synthesis.

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