1,2,3,4,5-Pentamethylcyclopentadiene Chemical Properties

Boiling point:

58 °C13 mm Hg(lit.)

Density 

0.87 g/mL at 25 °C(lit.)

refractive index 

n20/D 1.474(lit.)

Flash point:

112 °F

storage temp. 

Store below +30°C.

form 

Liquid

color 

Clear colorless to yellow-orange, may darken on storage

Specific Gravity

0.87

Water Solubility 

Miscible with methanol. dichloromethane and ethyl acetate. Slightly miscible with water.

Sensitive 

Light Sensitive

BRN 

1849832

Stability:

store cold

CAS DataBase Reference

4045-44-7(CAS DataBase Reference)

NIST Chemistry Reference

1,3-Cyclopentadiene, 1,2,3,4,5-pentamethyl-(4045-44-7)

Safety Information

Risk Statements 

10

Safety Statements 

16

RIDADR 

UN 3295 3/PG 3

WGK Germany 

3

F 

9-23

HazardClass 

3

PackingGroup 

III

HS Code 

29021990

MSDS

• Language:English Provider:1,2,3,4,5-Pentamethyl-1,3-cyclopentadiene
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1,2,3,4,5-Pentamethylcyclopentadiene Usage And Synthesis

Chemical Properties

clear colorless to yellowish liquid

Uses

1,2,3,4,5-Pentamethylcyclopentadiene serves as a precursor to the ligand 1,2,3,4,5-pentamethylcyclopentadienyl. It is used as a growth modifier chemical, during metal organic chemical vapor deposition of iron from iron pentacarbonyl. It is used as a ligand in "one-pot" iridium-catalyzed transformation of alcohols to amides. Further, it acts as an electron mediator in the regeneration process of nicotinamide adenine dinucleotide. In addition to this, it undergoes radical cation catalyzed cycloaddition reaction with allenes to get Diels-Alder product.

General Description

Mechanism of the Diels-Alder reaction of paramagneticendohedral metallofullerene and 1,2,3,4,5-pentamethylcyclopentadiene has been studied. Three-step large-scale preparation of 1,2,3,4,5-pentamethylcyclopentadiene has been reported. Reaction of 1,2,3,4,5-pentamethylcyclopentadiene (HCp*) with actinide ions in gas phase has been investigated by laser ablation mass spectrometry. It undergoes radical cation catalyzed cycloaddition with electron rich allenes to form Diels-Alder product.

1,2,3,4,5-Pentamethylcyclopentadiene(4045-44-7)Related Product Information

• 1,3-Cyclopentadiene
• Tetraphenylcyclopentadienone
• 1,2,3,4-TETRAMETHYL-1,3-CYCLOPENTADIENE
• Decamethylcyclopentasiloxane
• METHYLCYCLOPENTADIENE DIMER
• N,N-Dimethylformamide
• 2-Chloro-5-chloromethylpyridine
• Sodium carboxymethyl cellulose
• 5-BROMO-1,2,3,4,5-PENTAPHENYL-1,3-CYCLOPENTADIENE
• SODIUM PENTAMETHYLCYCLOPENTADIENIDE
• TETRAMETHYL(N-PROPYL)CYCLOPENTADIENE
• (-)-2-[METHYLAMINO]-1-PHENYLPROPANE
• PENTAMETHYLCYCLOPENTADIENE TITANIUM TRIMETHOXIDE
• Bis(pentamethylcyclopentadienyl)iron(II)
• BIS(PENTAMETHYLCYCLOPENTADIENYL)TITANIUM DICHLORIDE
• PENTAMETHYLCYCLOPENTADIENE TITANIUM TRICHLORIDE
• BIS(PENTAMETHYLCYCLOPENTADIENYL)HAFNIUM DICHLORIDE
• 1,2,3,4,5-PENTAPHENYL-1,3-CYCLOPENTADIENE