Wang, Hao-Yang; Gao, Ying; Zhang, Fang; Yu, Chong-Tian; Xu, Chu; Guo, Yin-Long published the artcile< Mass Spectrometric Study of the Gas-Phase Difluorocarbene Expulsion of Polyfluorophenyl Cations via F-Atom Migration>, Name: 1,4-Difluoro-2-iodobenzene, the main research area is mass spectrometry polyfluorophenyl cation gas phase difluorocarbene expulsion; fluorine atom migration.
An increasing number of fluorinated drugs, pesticides, and fine chems. are now produced and applied, especially those containing polyfluorinated aromatic moieties. However, at present, the extent of literature covering the special mass spectrometric behaviors of these compounds remains limited. Herein, we report an unexpected but also general gas-phase dissociation mode of polyfluorinated aromatics in mass spectrometry: expulsion of difluorocarbene (50-Da neutral loss). Results from accurate mass measurements, tandem mass spectrometric experiments, and d. functional theory (DFT) calculations support an intramol. F-atom “”ring-walk”” migration mechanism for gas-phase CF2 loss. Based on an assessment of the electron ionization-mass spectrometry (EI-MS) data of more than 40 polyfluorinated aromatic compounds from the National Institute of Standards and Technol. data bank, we generalized on the substitution group effects on the difluorocarbene dissociation process of polyfluorinated aromatic compounds in EI-MS. These studies have enriched our knowledge of the special gas-phase reactivity of polyfluorinated aromatics and will provide valuable information in further anal. research of these compounds by mass spectrometry.
Journal of the American Society for Mass Spectrometry published new progress about Aryl fluorides Role: PEP (Physical, Engineering or Chemical Process), PRP (Properties), RCT (Reactant), PROC (Process), RACT (Reactant or Reagent) (polyfluoro arenes). 2265-92-1 belongs to class iodides-buliding-blocks, and the molecular formula is C6H3F2I, Name: 1,4-Difluoro-2-iodobenzene.
Referemce:
Iodide – Wikipedia,
Iodide – an overview | ScienceDirect Topics – ScienceDirect.com