The Manganocene, with the CAS registry number 73138-26-8, is also known as Bis(cyclopentadienyl)manganese. Its EINECS number is 215-038-5. This chemical's molecular formula is C₁₀H₁₀Mn  and molecular weight is 185.12. What's more, its systematic name is Cyclopenta-1,3-diene; manganese. It should be sealed and stored in containers with dry inert gas which are placed in a cool and dry place. Moreover, it should be protected from oxides, moisture, air and water. It is not compatible with strong oxidizing agents, halogens.

Physical properties of Manganocene are: (1)ACD/LogP: 1.79; (2)# of Rule of 5 Violations: 0; (3)#H bond acceptors: 0; (4)#H bond donors: 0; (5)#Freely Rotating Bonds: 0; (6)Enthalpy of Vaporization: 27.4 kJ/mol; (7)Boiling Point: 41.5 °C at 760 mmHg; (8)Vapour Pressure: 418 mmHg at 25°C.

Preparation: this chemical can be prepared by reaction of manganese(II) chloride with sodium cyclopentadienide.

MnCl₂ + 2CpNa → Cp₂Mn + 2NaCl

When you are using this chemical, please be cautious about it as the following:
It is irritating to eyes, respiratory system and skin. In case of contact with eyes, you should rinse immediately with plenty of water and seek medical advice. When using it, you need wear suitable protective clothing.

You can still convert the following datas into molecular structure:
(1)Canonical SMILES: [CH-]1[C-]=[C-][C-]=[C-]1.[CH-]1[C-]=[C-][C-]=[C-]1.[Mn]
(2)InChI: InChI=1S/2C5H.Mn/c2*1-2-4-5-3-1;/h2*1H;/q2*-5;
(3)InChIKey: HDTBMGOTBXMORT-UHFFFAOYSA-N