Thermal Decomposition of 2- and 4-Iodobenzyl Iodide Yields Fulvenallene and Ethynylcyclopentadienes: A Joint Threshold Photoelectron and Matrix Isolation Spectroscopic Study.

ABSTRACT: The thermal decomposition of 2- and 4-iodobenzyl iodide at high temperatures was investigated by mass-selective threshold photoelectron spectroscopy (ms-TPES) in the gas phase, as well as by matrix isolation infrared spectroscopy in cryogenic matrices. Scission of the benzylic C-I bond in the precursors at 850 K affords 2- and 4-iodobenzyl radicals (ortho- and para-IC₆H₄CH₂^•), respectively, in high yields. The adiabatic ionization energies of ortho-IC₆H₄CH₂^• to the X̃⁺(¹A') and ã⁺(³A') cation states were determined to be 7.31 ± 0.01 and 8.78 ± 0.01 eV, whereas those of para-IC₆H₄CH₂^• were

SUBMITTER: Saraswat M 

PROVIDER: S-EPMC10591508 | biostudies-literature | 2023 Oct

REPOSITORIES: biostudies-literature