Photodissociation of Mg+–(CH3OH)  complexes: evidence for the onset of solvation

France, M. R.; Pullins, S. H.; Duncan, M. A.

doi:10.1016/s0301-0104(98)00352-8

Cited by 43 publications

(38 citation statements)

References 30 publications

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“…Other possible processes, reactions 6, have been observed in other experiments for complexes with larger values of x. [11][12][13] These reactions were not observed in the present studies; however, our sensitivity to these reactions is poor because these (6) product ions lie only 1 amu below the mass of the very intense reactant ions.…”

Section: Cid Of Mgsupporting

confidence: 42%

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Collision-Induced Dissociation and Theoretical Studies of Mg⁺ Complexes with CO, CO₂, NH₃, CH₄, CH₃OH, and C₆H₆

et al. 2000

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The sequential bond energies for complexes of Mg + with CO, CO 2 , NH 3 , CH 4 , CH 3 OH, and C 6 H 6 are determined by collision-induced dissociation (CID) with xenon or argon in a guided ion beam tandem mass spectrometer. The kinetic energy dependence of the CID and ligand exchange cross sections are analyzed to yield 0 and 298 K bond energies for Mg + -L after accounting for the effects of multiple ion-molecule collisions, internal energy of the reactant ions, and dissociation lifetimes. Bond energies (in eV) to Mg + at 0 K are determined for L ) Ar (0.10 ( 0.07), Xe (0.32 ( 0.12), 1-2 CO (0.43 ( 0.06 and 0.40 ( 0.03), 1-3 CO 2 (0.60 ( 0.06, 0.50 ( 0.03, and 0.46 ( 0.06), 1-5 NH 3 (1.60 ( 0.12, 1.27 ( 0.07, 0.99 ( 0.09, 0.45 ( 0.11, and 0.58 ( 0.12), 1-2 CH 4 (0.29 ( 0.07 and 0.15 ( 0.07), 1-3 CH 3 OH (1.51 ( 0.07, 1.25 ( 0.07, and 0.95 ( 0.09), and one C 6 H 6 (1.39 ( 0.10 eV). As expected for largely electrostatic interactions, the sequential bond energies generally decrease monotonically with increasing number of ligands. These values are in good agreement with theoretical values in the literature and ab initio calculations performed here, but the agreement is mixed for comparison with results of photodissociation measurements. Qualitatively, geometries of these complexes are controlled by interactions of the ligands with the single polarized valence electron on Mg + .

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Section: Cid Of Mgsupporting

confidence: 42%

“…Such a reaction is also observed in studies of Mg + (CH 3 OH) x complexes. [10][11][12][13] Photodissociation spectroscopy of Mg + (CH 4 ) has also been conducted by Kleiber and coworkers. 14 Augmenting these experimental studies has been the extensive theoretical work of Bauschlicher and co-workers.…”

Section: Introductionmentioning

confidence: 99%

Collision-Induced Dissociation and Theoretical Studies of Mg⁺ Complexes with CO, CO₂, NH₃, CH₄, CH₃OH, and C₆H₆

et al. 2000

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“…Clusters containing a magnesium monocation, Mg þ , which has the same electron configuration with Na, have been studied extensively, because allowed transitions lie in UV region due to 2 P 2 S transition of the atomic ion. There are several reports on the observation that the fragment ions are produced via CT in the photodissociation of Mg þ -molecule clusters [4][5][6][7][8][9][10][11][12]. For example, in the photodissociation of MgC 2 H þ 4 [4,5] and MgNH þ 3 [8,9], ions of C 2 H þ 4 Chemical Physics Letters 382 (2003) 283-290 www.elsevier.com/locate/cplett and NH þ 3 were produced as minor fragments, respectively, by intermolecular bond dissociation after CT processes.…”

Section: Introductionmentioning

confidence: 99%

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

Furuya¹,

Tsunoyama²,

Misaizu³

et al. 2003

Chemical Physics Letters

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“…Vibrationally-resolved photodissociation spectra on the singly-solvated cluster ion have been reported by Duncan and co-workers [73]; however, photodissociation measurements on the larger clusters were reported only at selected wavelengths. Stepwise binding energies in the Mg þ (CH 3 OH) n system have been measured in collision-induced dissociation experiments reported by Armentrout and co-workers [23].…”

Section: Mg þ (Ch 3 Od) Nmentioning

confidence: 80%

Size-dependent reactivity in open shell metal-ion polar solvent clusters: spectroscopic probes of electronic-vibration coupling, oxidation and ionization

Farrar

2003

International Reviews in Physical Chemistry

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This review considers the spectroscopy and structure of clusters formed by stepwise addition of polar solvent molecules such as NH 3 , H 2 O, and CH 3 OH to effective one-electron chromophores that include the singly-charged alkaline earth cations Mg þ , Ca þ , and Sr þ ; atomic sodium; and the Rydberg molecule NH 4 . The absorption of photons by such species results in initial electronic excitation, followed by energy transfer to vibrational degrees of freedom, ultimately leading to dissociation. Experimental data are presented to support this electronic-tovibrational energy transfer mechanism. Wavelength-dependent photodissociation signals for all of these species exhibit a similar size-dependence in which large spectral red shifts are observed as the first solvation shell fills. An examination of ab initio calculations on a number of related systems, as well as theoretical models for charge transfer, suggests that non-covalent interactions of solvent molecules with the single valence electron of the cluster core lead to spontaneous ionization of the core with increasing cluster size. The process is analogous to the formation of solvated electrons in condensed phases. The collective results suggest that within the broad topic of solvation and the formation of solutions, clusters can provide a linkage between the properties of the gas phase and those of condensed phases.

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Photodissociation of Mg+–(CH3OH) complexes: evidence for the onset of solvation

Cited by 43 publications

References 30 publications

Collision-Induced Dissociation and Theoretical Studies of Mg⁺ Complexes with CO, CO₂, NH₃, CH₄, CH₃OH, and C₆H₆

Collision-Induced Dissociation and Theoretical Studies of Mg⁺ Complexes with CO, CO₂, NH₃, CH₄, CH₃OH, and C₆H₆

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

Size-dependent reactivity in open shell metal-ion polar solvent clusters: spectroscopic probes of electronic-vibration coupling, oxidation and ionization

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Photodissociation of Mg+–(CH3OH) complexes: evidence for the onset of solvation

Cited by 43 publications

References 30 publications

Collision-Induced Dissociation and Theoretical Studies of Mg+ Complexes with CO, CO2, NH3, CH4, CH3OH, and C6H6

Collision-Induced Dissociation and Theoretical Studies of Mg+ Complexes with CO, CO2, NH3, CH4, CH3OH, and C6H6

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

Size-dependent reactivity in open shell metal-ion polar solvent clusters: spectroscopic probes of electronic-vibration coupling, oxidation and ionization

Contact Info

Product

Resources

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Collision-Induced Dissociation and Theoretical Studies of Mg⁺ Complexes with CO, CO₂, NH₃, CH₄, CH₃OH, and C₆H₆

Collision-Induced Dissociation and Theoretical Studies of Mg⁺ Complexes with CO, CO₂, NH₃, CH₄, CH₃OH, and C₆H₆