1,2,3,4,5-Pentamethylcyclopentadiene, CAS No. 4045-44-7

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4045-44-7

Catalog No. EBD25018

CAS 4045-44-7

Name 1,2,3,4,5-Pentamethylcyclopentadiene

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Basic Information

Synonyms: 1,3-Cyclopentadiene,1,2,3,4,5-pentamethyl- Cyclopentadiene,1,2,3,4,5-pentamethyl- Pentamethylcyclopentadiene 1,2,3,4,5-Pentamethyl-1,3-cyclopentadiene 1,2,3,4,5-Pentamethylcyclopentadiene

Molecular Formula: C10H16

Molecular Weight: 136.23

MDL Number: MFCD00001354

Categories: Materials Chemistry > Optoelectronic and Organic Semiconductor Materials > OLED and Organic Optoelectronic Precursors Synthetic Chemistry > Organic Building Blocks > Other Organic Building Blocks

Product Description:

1,2,3,4,5-Pentamethylcyclopentadiene is a highly substituted cyclopentadiene derivative. It is a colorless to pale yellow liquid at room temperature and serves as a crucial precursor in organometallic chemistry and materials science. Its primary and most significant application is as a ligand precursor for the synthesis of pentamethylcyclopentadienyl (Cp*) complexes. The Cp* ligand, generated from this compound, is extensively used to stabilize a wide range of transition metal complexes, particularly those of lanthanides and actinides, as well as early transition metals. These Cp*-based complexes are fundamental building blocks in the development of catalysts for olefin polymerization and are key components in the synthesis of advanced materials, including precursors for organic light-emitting diodes (OLEDs) and other organic electronic devices. Due to its role as a specialized, high-value synthon for creating sophisticated organometallic compounds with direct applications in catalysis and functional materials, it is categorized primarily within the materials chemistry domain. Its utility as a fundamental organic building block in synthetic chemistry is also recognized.

Physical Properties

Boiling Point: 58 °C/13 mmHg(lit.)

Flash Point: 44 °C

Density: 0.87 g/mL at 25 °C(lit.)

Refractivity: n20/D 1.474(lit.)

Storage: −20°C

Safety Information

Packing Level: III

Hazard Category: 3

Transport Codes: 3295C

Analytical Data

Appearance: clear colorless to yellowish liquid