New insight on the photofragmentation of CH2I2

29th International Conference on Photonic, Electronic, and Atomic Collisions

Casavola, A.R.^1 ; Cartoni, A.^2 ; Bolognesi, P.^1 ; Borocci, S.^3 ; Avaldi, L.^1

Istituto di Struttura della Materia, Area della Ricerca Roma 1, Monterotondo Scalo

00016, Italy^1

Dip. di Chimica, Università di Roma Sapienza, p.le Aldo Moro 5, Roma

00185, Italy^2

Dip. per l' Innovazione Nei Sistemi Biologici, Agroalimentari e Forestali (DIBAF), Università della Tuscia, L.go dell'Università, s.n.c., Viterbo

01100, Italy^3

关键词: Diiodomethane;    Isomerisation;    Photofragmentation;    Radical cations;    Theoretical investigations;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/635/11/112064/pdf
DOI  :  10.1088/1742-6596/635/11/112064

来源: IOP

【 摘 要 】

An experimental and theoretical investigation of the VUV photofragmentation of CH2I2molecule is reported. The work focuses on the I-loss channel. The experimental results demonstrate that at energies lower than 12 eV diiodomethane radical cation dissociates only into the CH2I+ion and an I atom while the theoretical calculationsshow that isomerisation of [CH2I2]+into iso-diiodomethane [CH2I-I]+intermediates can occur before the loss ofiodine atom.