Photodissociation spectroscopy of MgCH3I+: dissociation processes via charge transfer and/or chemical bond rupture

Multiple Photofragmentation Pathways with Different Recoil Anisotropy from a Metal-Ion–Ligand Complex

“…We have confirmed from infrared photodissociation spectroscopy in the CH stretching region [15] that the concentration of the metastable isomer structure mentioned in Ref. [10] is small compared with this ground-state structure. (c) Five kinds of fragment ions are formed by several processes including intermolecular bond breaking (evaporation), chemical bond breaking (intracluster reaction), and CT, after one photon absorption.…”

“…Details of the experimental setup have been reported elsewhere [10]. Ion complexes composed of Mg and ICH 3 were produced by a combination of laser vaporization and pulsed beam expansion.…”

“…We recently reported a photodissociation spectrum and dissociation pathways from Mg -ICH 3 , along with theoretically calculated results [10]. We used a density functional theory (DFT) program from the GAUSSIAN 98 package [12] with the Becke-3-Lee-Yang-Parr (B3LYP) functional for a geometry optimization.…”

Photofragment imaging from mass-selected ions using a reflectron mass spectrometer. II: Formation mechanism of MgF+ in the photodissociation of Mg+FCH3 complex

“…In our group, the photodissociation of Mg + XCH 3 (X = F, Cl, Br, and I) complexes has been studied by using a reflectron time-offlight (TOF) mass spectrometer [8,13,14]. In the photodissociation spectra of these cluster ions, three bands were observed in the ultraviolet region, which originate from the 2 P ← 2 S transition of Mg + .…”

Photodissociation Study of Ca+-Dipropylamine Complex

“…Singly charged alkaline earth metal ions are ideal for such photodissociation studies by virtue of their substantial oscillator strengths in the visible and ultraviolet spectral regions, which can be easily accessed by pulsed laser sources [3, 4, 6, 12−14]. During the last few years, many photo-induced reactions of Mg + -ligand complexes have been studied experimentally, for example, those of Mg + -XCH 3 (X=H, F, Cl, I) [1,15,16], Mg + -H 2 O [17−19], Mg + -CH 3 OH [20,21], Mg + -acetone, Mg + -XHCO (X=H, CH 3 ) [22,23], Mg + -nitromethane [24], Mg + -dioxanes [25], Mg + -NH 3 [26], Mg + -diethylamine [27], Mg + -triethylamine [27], Mg + -NCCH 3 [28], Mg + -NCSR (R=CH 3 , C 2 H 5 ) [29], Mg + -XCNC 2 H 5 (X=O, S) [29,30], Mg + -2,2,2-trifluoroethanol [31], Mg + -C 6 H 5 X (X=H, F, Cl, Br) [32], Mg + -(o-, m-, p-C 6 H 4 F 2 ) [33], Mg + (2-fluoropyrdine) [34], Mg + -thymine and Mg +uracil [35]. In the ground states of such complexes, Mg + is always coordinated to highly electronegative O, F, or N atoms, and the electrostatic interaction is dominant.…”