CAS 12108-13-3 (Methylcyclopentadienyl)manganese(I) tricarbonyl

Synonyms

pi-(Methylcyclopentadienyl)manganese tricarbonyl

Molecular Weight

218.09

Molecular Formula

C9H7MnO3

Canonical SMILES

CC1C=C[C-]=C1.[C-]#[O+].[C-]#[O+].[C-]#[O+].[Mn]

InChI

InChI=1S/C6H7.3CO.Mn/c1-6-4-2-3-5-6;3*1-2;/h2,4-6H,1H3;/q-1;

InChI Key

PIVRQNUPYVIVCC-UHFFFAOYSA-N

Purity

96%

Appearance

Yellow liquid

Complexity

98.2

Covalently-Bonded Unit Count

Defined Atom Stereocenter Count

Exact Mass

217.977562

Heavy Atom Count

Monoisotopic Mass

217.977562

Rotatable Bond Count

Topological Polar Surface Area

3 Å²

Application

(Methylcyclopentadienyl)manganese(I) tricarbonyl (MMT) is primarily used as an antiknock agent in gasoline, enhancing octane levels and reducing smoke emissions from various burners, including home, commercial, industrial, and marine. Discovered in the 1950s and commercially available through Ethyl Corporation, MMT is synthesized through the carbonylation of bis(methylcyclopentadienyl) manganese. This dark orange liquid has a faintly pleasant herb-like odor and possesses a molecular weight of 218.10. It boils at 232°C, melts at 18°C, and has a flash point of 74°C. Although practically insoluble in water, MMT can be mildly toxic if inhaled, ingested, or absorbed through the skin. Beyond its role as an antiknock additive, MMT is utilized for doping ZnSe nanocrystals, participating in aldol addition reactions, and forming various complex compounds. While it remains stable in water, MMT decomposes when exposed to light.

January 19, 2025

Excellent Research Tool in Manganese Chemistry

I utilized (Methylcyclopentadienyl)manganese(I) tricarbonyl from Alfa Chemistry for ZnSe nanocrystal doping. This orange liquid is easy to handle with a pleasant odor and significantly enhanced our research results.