Description

1,2,3,4,5-Pentamethylcyclopentadiene (CAS No. 4045-44-7) is a highly specialized organic compound with the molecular formula C₁₀H₁₆. This derivative of cyclopentadiene features five methyl groups symmetrically substituted around the cyclopentadiene ring, enhancing its reactivity and utility in organometallic chemistry. It is a valuable precursor for synthesizing metallocene complexes, particularly in the production of catalysts for polymerization reactions. The compound is characterized by its high purity and stability, making it ideal for research and industrial applications. Available in various quantities, our product is rigorously tested to meet the stringent requirements of researchers and scientists working in advanced chemical synthesis and material science.

Properties

• CAS Number: 4045-44-7
• Complexity: 192
• IUPAC Name: 1,2,3,4,5-pentamethylcyclopenta-1,3-diene
• InChI: InChI=1S/C10H16/c1-6-7(2)9(4)10(5)8(6)3/h6H,1-5H3
• InChI Key: WQIQNKQYEUMPBM-UHFFFAOYSA-N
• Exact Mass: 136.125200510
• Molecular Formula: C10H16
• Molecular Weight: 136.23
• SMILES: CC1C(=C(C(=C1C)C)C)C
• Monoisotopic Mass: 136.125200510
• Physical Description: Colorless or light yellow liquid with a mild odor;
• Synonyms: 1,2,3,4,5-Pentamethylcyclopentadiene, 1,3-Cyclopentadiene, 1,2,3,4,5-pentamethyl-, EINECS 223-743-4, DTXSID00193466, NSC 222823, DTXCID10115957, 1,2,3,4,5-pentamethyl-cyclopentadiene, 223-743-4, 4045-44-7, 1,2,3,4,5-pentamethylcyclopenta-1,3-diene, Pentamethylcyclopentadiene, Cyclopentadiene, 1,2,3,4,5-pentamethyl-, 1,2,3,4,5-Pentamethyl-1,3-cyclopentadiene, DSE3MRZ77C, NSC-222823, 1,3-Cyclopentadiene, pentamethyl-, MFCD00001354, NSC222823, UNII-DSE3MRZ77C, SCHEMBL449043, SCHEMBL449044, SCHEMBL525718, WQIQNKQYEUMPBM-UHFFFAOYSA-, DTXSID50579236, SBB085953, AKOS015950699, 51330-60-0, BS-16710, DB-009421, NS00030795, P1292, 1,2,3,4,5-Pentamethylcyclopentadiene, 95%, 1,2,3,4,5-pentamethyl-cyclopenta-1,3-diene, EN300-180073, 1,2,3,4,5-pentamethyl-2,4-cyclopentadien-1-yl, Q1927394, 1,2,3,4,5-Pentamethylcyclopentadiene, technical, >=94.0% (GC), InChI=1/C10H16/c1-6-7(2)9(4)10(5)8(6)3/h6H,1-5H3

Application

1,2,3,4,5-Pentamethylcyclopentadiene is widely used as a ligand in the synthesis of metallocene catalysts, which are critical for olefin polymerization processes. It serves as a key intermediate in the preparation of transition metal complexes for homogeneous catalysis. Researchers also utilize this compound in the development of novel organometallic frameworks and materials with tailored properties. Its unique structure makes it valuable in studies of steric and electronic effects in coordination chemistry.

Safety and Hazards

GHS Hazard Statements

• H226 (98.2%): Flammable liquid and vapor [Warning Flammable liquids]

Precautionary Statements

• P210, P233, P240, P241, P242, P243, P280, P303+P361+P353, P370+P378, P403+P235, and P501

Hazard Classes and Categories

• Flam. Liq. 3 (98.2%)

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