4045-51-6

Usage

Physical state

Colorless liquid

Flammability

Highly flammable

Odor

Pungent

Usage

Building block in the synthesis of various organic compounds

Applications

Production of fragrances, pharmaceuticals, and polymers

Role

Monomer in the production of specialized resins

Function

Precursor in the manufacturing of fine chemicals

Research utility

Reagent for various chemical reactions

Importance

Versatile and significant compound in the field of chemistry

Upstream product

• 147962-93-4 3,4-Dimethyl-cyclopent-2-enol 

Relevant academic research and scientific papers

An Electron Spin Resonance Study of the Methylcyclopentadienyl Radicals, MenH5-nC5 (n=1-5)

The radicals MenC5H5-n have been generated by photolysis of the corresponding hydrocarbons (n=3-5) or mercury derivatives (n=0-5) and their e.s.r. spectra have been recorded.The spectra are interpreted in terms of thermal population of the ψA and ψS molecular orbitals, for which the predicted hyperfine coupling constants are calculated by the McLachlan equation, taking λ 0.75 and Q(C5H5) -30 and Q(Me5C5) 31.85 G.The energy separations between the ψA and ψS MOs can be rationalised on the assumption that a methyl substituent on a carbon atom of the cyclopentadienyl carrying a unit ?-electron has a destablising interaction, within a factor of two, of 10 kJ mol-1.