Manganocene

Manganocene
Names
	Other names Bis(cyclopentadienyl)manganese
Identifiers
CAS Number	73138-26-8; 1271-27-8;
3D model (JSmol)	Interactive image;
ECHA InfoCard	100.149.777
PubChem CID	21960473;
CompTox Dashboard (EPA)	DTXSID50993877 ;
	InChI InChI=1S/2C5H5.Mn/c21-2-4-5-3-1;/h21-3H,4H2;/q2*-1;+2 Key: LCGVCXIFXLGLHG-UHFFFAOYSA-N;
	SMILES C1C=CC=[C-]1.C1C=CC=[C-]1.[Mn+2];
Properties
Chemical formula	C10H10Mn
Molar mass	185.128 g·mol−1
Appearance	amber solid < 159 °C, pink > 159 °C
Melting point	175 °C (347 °F; 448 K)
Boiling point	245 °C (473 °F; 518 K)
Hazards
	GHS labelling:
Pictograms
Signal word	Danger
Hazard statements	H228, H315, H319, H335
Precautionary statements	P210, P261, P305+P351+P338
NFPA 704 (fire diamond)	2 2 3
Flash point	52 °C (126 °F; 325 K)
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). verify (what is ?) Infobox references

Manganocene or bis(cyclopentadienyl)manganese(II) is an organomanganese compound with the formula [Mn(C₅H₅)₂]_n. It is a thermochromic solid that degrades rapidly in air. Although the compound is of little utility, it is often discussed as an example of a metallocene with ionic character.

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