Methylcyclopentadienyl manganese tricarbonyl, commonly referred to as Mn2(CO)10 or simply as “manganese carbonyl,” is an organometallic compound with the molecular formula C5H5MnO3. It is a dark brown to black crystalline solid that is highly sensitive to air and moisture due to its reactivity.
This compound is characterized by its cyclic structure, where a methyl group is attached to a cyclopentadienyl ring that is bonded to a manganese atom. The manganese atom is further coordinated by three carbonyl groups, which are essential to the stability of the molecule.
Mn2(CO)10 is used in various applications, including as a precursor in the synthesis of other organometallic compounds and in the production of specialty chemicals and materials. It is also utilized in the pharmaceutical industry for the synthesis of complex organic molecules and as a catalyst in certain chemical reactions.
The compound is known for its volatility and must be handled with care under an inert atmosphere to prevent decomposition. Its industrial applications are limited by its toxicity and the need for specialized handling procedures.
In summary, methylcyclopentadienyl manganese tricarbonyl is a versatile organometallic compound with a range of applications in chemical synthesis and industry. Its unique structure and reactivity make it a valuable yet challenging compound to work with in scientific and industrial settings.
Description
| Methylcyclopentadienyl manganese tricarbonyl Chemical Properties |
| Melting point | -1 ??C (lit.) |
| Boiling point | 232-233 ??C (lit.) |
| density | 1.38 g/mL at 25 ??C (lit.) |
| vapor density | >1 (vs air) |
| vapor pressure | 0.05 mm Hg ( 20 ??C) |
| refractive index | n20/D 1.584(lit.) |
| Fp | 205???F |
| storage temp. | Poison room |
| form | liquid |
| color | yellow |
| Specific Gravity | 1.388 |
| Water Solubility | Insoluble in water. Soluble in hydrocarbon solvents, alcohols, ether, acetone |
| Sensitive | Air Sensitive |
| Merck | 14,6223 |
| Exposure limits | ACGIH: TWA 0.2 mg/m3 (Skin) OSHA: Ceiling 5 mg/m3 NIOSH: IDLH 500 mg/m3; TWA 0.2 mg/m3; TWA 1 mg/m3; STEL 3 mg/m3 |
| Stability: | Stable. Incompatible with strong oxidizing agents. |
| InChIKey | LYHJNAIHGFWRKM-UHFFFAOYSA-N |
| LogP | 3.4 at 26?? |
| CAS DataBase Reference | 12108-13-3(CAS DataBase Reference) |
| EPA Substance Registry System | Methylcyclopentadienyl manganese tricarbonyl (12108-13-3) |
| Safety Information |
| Hazard Codes | T,N,T+ |
| Risk Statements | 23/24/25-40-50/53-48/23-38-26-24/25 |
| Safety Statements | 23-26-36/37/39-45-61-60-36/37-28 |
| RIDADR | UN 3281 6.1/PG 2 |
| OEB | C |
| OEL | TWA: 0.2 mg/m3 [skin] |
| WGK Germany | 3 |
| RTECS | OP1450000 |
| TSCA | Yes |
| HazardClass | 6.1 |
| PackingGroup | II |
| Hazardous Substances Data | 12108-13-3(Hazardous Substances Data) |
| Toxicity | LD50 orally in mice, guinea pig, rabbit: 352; 905; 95 mg/kg; orally in male, female rats: 175 ??33; 89 ??14; LC50 inhalation in rat: 0.22 mg/l (Stara) |
