Manganocene

Manganocene
Identifiers
CAS number 73138-26-8
PubChem 24199707
Properties
Molecular formula C10H10Mn
Molar mass 185.12 g mol−1
Melting point

175 °C
Boiling point

245 °C
Hazards
EU classification Xn F
R-phrases R11, R14, R20/21/22, R36/37/38
S-phrases S16, S26, S36/37/39
NFPA 704
2
0
0
Flash point 52 °C (125.6 °F)
 Y (verify) (what is: Y/N?)
Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa)
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).

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

This article incorporates information from the equivalent article on the German Wikipedia.