Bis(cyclopentadienyl)magnesium(II)

Synonym: Bis(cyclopentadienyl)magnesium, Magnesocene, MgCp2

CAS Number 1284-72-6 | MDL Number MFCD00134487  | EC Number 603-275-0

MgCp2 Chemical Structure

Product codeMG4726
CAS number1284-72-6
Assay (purity)98%+
Metal purity99.99+%-Mg
Purity methodby titration: complexometric
Molecular weight154.49 g/mol
Formsolid
Appearancewhite crystals
Melting point176.0°C (348.8°F)
Boiling point290.0°C (554°F) @ 760 mmHg (decomposes)
Flash point13.9±13.0°C
Sensitivityair, moisture
Molecular formulaC10H10Mg
Linear formulaMg(C5H5)2
Packagingglassware/metal containers/bubblers

Bis(cyclopentadienyl)magnesium, also known as MgCp₂ or Magnesocene, is an organomagnesium compound with the molecular formula C₁₀H₁₀Mg and a molecular weight of 154.49 g/mol. This compound features magnesium in the +2 oxidation state, coordinated with two cyclopentadienyl ligands, creating a stable sandwich structure characteristic of metallocenes. Bis(cyclopentadienyl)magnesium appears as white crystals, has a purity of 99% verified by titration, and is highly sensitive to air and moisture, requiring storage in an inert, dry environment.

Applications in Organic and Inorganic Synthesis

Bis(cyclopentadienyl)magnesium serves as a critical reagent in organometallic chemistry and is widely used for synthesizing various magnesium-containing compounds. Its structure, with two cyclopentadienyl ligands symmetrically bonded to magnesium, makes it effective in facilitating complex reactions, particularly in catalysis and polymerization. It is also valuable in producing magnesium-based materials and is frequently employed in reactions that require the precise addition of magnesium components.

Precautions for Safe Storage and Handling

Classified under hazard codes H228-2, H250, H260, H314, H318, and H335, Bis(cyclopentadienyl)magnesium is flammable, pyrophoric, and highly reactive with water. It should be handled in a well-ventilated, moisture-free environment, ideally under an inert gas. Proper protective equipment, including gloves, goggles, and flame-resistant clothing, is essential to prevent exposure to its reactive nature. Additionally, storage in sealed containers away from heat and ignition sources is recommended to prevent accidental ignition.

Industrial and Laboratory Applications

In both industrial and laboratory settings, Bis(cyclopentadienyl)magnesium is essential for the development of magnesium-based organometallic reagents and is frequently used in material synthesis and catalytic applications. It is instrumental in the production of advanced polymers and specialized materials, contributing to research and industrial manufacturing of high-performance products. The compound’s unique structure and reactivity make it a crucial agent in various organometallic transformations, especially in high-tech material science and chemical synthesis.

Bis(cyclopentadienyl)magnesium(II) is the most popular p-doping precursor for GaN materials in the industry. This product was successfully applied as a precursor for chemical vapor infiltration (CVI) of magnesium metal film on carbon foams at 700-775°C substrate temperature. MgCp2 has been applied as a precursor for the MOCVD growth of MgO as passivating buffer layers for YBa2Cu3O7−x deposition on GaAs substrates. It is also has been applied for the growth of magnesium oxide thin films by atomic layer epitaxy (ALE) with water as an oxygen source, on soda-lime glass and Si(100) as substrates. This product is the most commonly used p-dopant in GaN-based materials as well as GaAs, AlGaAs, InP. See links below

Ereztech manufactures and sells this product in small and bulk volumes. Glass ampules, bottles or metal ampules or bubblers are available for packaging. For additional analytical information or details about purchasing MG4726 contact us at sales@ereztech.com

Safety information

UN3393
Hazardous class4.2 (4.3)
Packing groupI
PictogramsGHS02
Signal wordDANGER
Hazard statementsH228-H250-H260-H314-H318-H335
Precautionary statementsP210-P222-P223-P231 + P232-P240-P241-P260-P264-P271-P280-P301 + P330 + P331-P303 + P361 + P353-P304 + P340-P305 + P351 + P338-P310-P334 + P335-P363-P370 + P378
Transport descriptionOrganometallic substance, solid, pyrophoric, water-reactive (Bis(cyclopentadienyl) magnesium (II))
In TSCA registryYes

First Aid Measures

General adviceConsult a physician. Show this safety data sheet to the doctor in attendance. Move out of the dangerous area.
Eye contactRinse thoroughly with plenty of water for at least 15 minutes and consult a physician.
Skin contactWash off with soap and plenty of water. Consult a physician.
InhalationIf breathed in, move person into the fresh air. If not breathing, give artificial respiration. Consult a physician.
If swallowedDo NOT induce vomiting. Never give anything by mouth to an unconscious person. Rinse mouth with water. Consult a physician.

 

Certificates of Analysis (CoA)

If you don’t see the needed lot of Bis(cyclopentadienyl)magnesium(II) below please contact customer support at sales@ereztech.com

Lot# 020/338

External identifiers for MgCp2

Pubchem CID24942211
IUPAC Namemagnesium; cyclopenta-1,3-diene
SMILES[CH-]1C=CC=C1.[CH-]1C=CC=C1.[Mg+2]
InchI IdentifierInChI=1S/2C5H5.Mg/c2*1-2-4-5-3-1;/h2*1-5H;/q2*-1;+2
InchI KeyWGESBNRUPISICS-UHFFFAOYSA-N

Known applications and external links

With Bis(cyclopentadienyl)magnesium(II) other customers often ask:

Ereztech synthesizes and sells additional MG-compounds.

To purchase MG4726 contact us at sales@ereztech.com