Manganocene

Manganocene
Identifiers
73138-26-8 Yes
PubChem 24199707
Properties
Molecular formula
 C10H10Mn
Molar mass 185.12 g·mol−1
Melting point 175 °C (347 °F; 448 K)
Boiling point 245 °C (473 °F; 518 K)
Hazards
EU classification Xn F
R-phrases R11, R14, R20/21/22, R36/37/38
S-phrases S16, S26, S36/37/39
NFPA 704
Flammability code 2: Must be moderately heated or exposed to relatively high ambient temperature before ignition can occur. Flash point between 38 and 93 °C (100 and 200 °F). E.g., diesel fuel Health (blue): no hazard code Reactivity (yellow): no hazard code Special hazards (white): no codeNFPA 704 four-colored diamond
2
Flash point 52 °C (126 °F; 325 K)
Except where noted otherwise, data is given for materials in their standard state (at 25 °C (77 °F), 100 kPa)
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Infobox references

Manganocene or bis(cyclopentadienyl)manganese(II) is an organometallic compound of manganese. It is a metallocene.

In the solid state, manganocene adopts a polymeric structure with every manganese atom coordinated by three cyclopentadienyl ligands, two of which are bridging ligands. This compound has an electron count of 17; it is readily reduced to Cp2Mn−, which has an ideal electron count of 18 (see 18-electron rule).[1]

This metallocene is commercially available. It may be prepared in the conventional fashion, by reaction of manganese(II) chloride with sodium cyclopentadienide:

MnCl2 + 2 CpNa → Cp2 Mn + 2 NaCl

References

  1. ↑ "Open and half-open manganocene chemistry: more associated salts" Retrieved 16 August 2013.