Resonances in the photodepletion spectrum of the Ba…FCH3 weakly bound complex

Abstract

Articles you may be interested inPhotodissociation of (SO2XH) Van der Waals complexes and clusters (XH = C2H2, C2H4, C2H6) excited at 32 040-32090 cm−1 with formation of HSO2 and X

Transition State Spectroscopy of the Photoinduced Ca + CH3F Reaction. 1. A Cluster Isolated Chemical Reaction Study

“…Situations that are apparently similar, have been examined in free complex experiments by Polanyi and coworkers on 1:1 Li · · · CH 3 F [12] and by Ureña, Radloff and coworkers on Ba · · · FCH 3 [13][14][15][16][17][18][19][20][21][22][23][24][25][26][27][28]. We shall see the that dynamics of the present Ca · · · CH 3 F system is significantly different from the latter dynamics.…”

Transition State Spectroscopy of the Photoinduced Ca + CH3F Reaction. 2. Experimental and Ab Initio Studies of the Free Ca···FCH3 Complex

“…The first one implies a significant alteration of the calcium electronic structure that brings a level of calcium within the excitation region. This can be due either to a substantial electron transfer between Ca and CH 3 F in the excited state, or to the promotion of the excited electron to a Rydberg orbital, stabilized by the interaction with CH 3 F. The second tentative explanation was invoked due to the observation of structures in the action spectrum, an observation that makes the present Ca/CH 3 F system very different from the apparently similar Ba/CH 3 F system (Ca and Ba are both alkaline earth atoms) studied in the groups of Ureña [17,18,19,20,21,22] and Radloff [23,24,25,26,27]. The structures observed in the Ca/CH 3 F system were tentatively assigned to the C-F stretch in the CH 3 F molecule, suggesting that this stretch plays an important role in the dynamics of turning on the reaction.…”

“…The Na/HF [9], Li, Na/HF, CH 3 F [10,11,5], Na 2 /CH 3 Cl [12], Ca/HX [13,14,15,16] and Ba/CH 3 F [17,18,19,20,21,22] systems were explored using the latter technique. Realtime studies have also been performed on the Ba/CH 3 F system [23,24,25,26,27].…”

Transition state spectroscopy of open shell systems: Angle-resolved photodetachment spectra for the adiabatic singlet states of OHF

“…In these spectroscopic studies, the TS is reached via photon excitation from a specific precursor, usually a van der Waals complex between the two reactants [7,[16][17][18][19][20][21][22][23][24][25][26][27] or a stable negative ion [6,[28][29][30][31][32][33]. Using van der Waals complexes as precursors, one alternative developed by Wittig and coworkers [7,26,27] consists in photodissociating one of the reactants ejecting one fragment towards the second partner at restricted geometry conditions, imposed by the structure of the initial van der Waals precursor.…”