Description

Lithium Pentamethylcyclopentadienide is a highly reactive organolithium compound primarily used as a versatile precursor in advanced synthesis. This compound matters for its role as a key reagent in the preparation of transition metal complexes, particularly metallocene catalysts essential for polymerization processes. It is needed by R&D chemists and manufacturers in the fine chemical, pharmaceutical, and advanced materials sectors for developing novel catalysts and organometallic frameworks.

Application

• Precursor for the synthesis of pentamethylcyclopentadienyl (Cp*) transition metal complexes, widely used in catalysis.
• Key reagent in the development of single-site catalysts for olefin polymerization (e.g., polyolefin production).
• Building block in organometallic chemistry research and the synthesis of novel organolithium reagents.
• Starting material for the preparation of lithocene derivatives and other specialty organometallic compounds.
• Used in academic and industrial R&D for exploring new catalytic systems and reaction pathways.
• Potential applications in material science, such as in the deposition of thin films or the creation of metal-organic frameworks (MOFs).

Basic Information

Product Name	Lithium Pentamethylcyclopentadienide
CAS No.	51905-34-1
Molecular Formula	C₁₀H₁₅Li
Molecular Weight	142.16 g/mol
Synonyms	Lithium Pentamethylcyclopentadienyl; Cp*Li; Pentamethylcyclopentadienyllithium; 1,2,3,4,5-Pentamethylcyclopentadienyllithium; Lithium (1,2,3,4,5-pentamethylcyclopentadienide); Lithium 1,2,3,4,5-pentamethyl-2,4-cyclopentadien-1-ide
EINECS	Contact for details

Quality Control

Our Lithium Pentamethylcyclopentadienide is produced and handled under stringent quality protocols to ensure batch-to-batch consistency and high reactivity. All materials undergo rigorous analytical testing, including NMR and titration methods, to confirm identity and purity. A comprehensive Certificate of Analysis (COA) detailing purity, assay, and impurity profiles is provided with each shipment to support your quality assurance and R&D documentation needs.

Storage

Preserve in a tightly closed container, protected from light. Store under an inert atmosphere (argon or nitrogen) at 2-8°C or as specified on the label. Due to its hygroscopic and pyrophoric nature, the container must be kept sealed in a cool, dry, and well-ventilated area, away from moisture, air, and incompatible materials.

Specification

Item	Specification
Appearance	Off-white to beige powder or solid
Identification (NMR)	Conforms to structure
Assay (Titration)	≥ 95.0%
Solubility	Soluble in THF, ethers, hydrocarbons

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.