Hydrated metal ions in the gas phase

Beyer, Martin K.

doi:10.1002/mas.20135

Cited by 145 publications

(169 citation statements)

References 237 publications

(251 reference statements)

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“…As discussed above, the data of Lebouil et al [27] are consistent with the unipositive Mg + reaction sequence, and also with their proposed reaction sequence, which also involved a dissolution reaction, in their proposal, the dissolution reaction is Eq. (8 [40] implies that Mg + is unstable in the presence of water, and so is consistent with other studies [11][12][13][14][15] of the Mg + species.…”

Section: Williams Mcmurray and Co-workers [23-25] Used The Elegant Ssupporting

confidence: 88%

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Possible dissolution pathways participating in the Mg corrosion reaction

2015

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The Mg corrosion reaction sequence was considered in terms of possible elementary reaction steps, and their plausibility in relation to their thermodynamic status. The uni-positive Mg + reaction sequence is thermodynamically favoured, and can occur by a number of elementary steps. There are a number of possible dissolution reactions (which are defined are reactions which contribute no electrons to the corroding Mg electrode). It is impossible at this stage to conclusively determine the reaction mechanism without knowledge of the species present at the magnesium-water interface.

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Section: Williams Mcmurray and Co-workers [23-25] Used The Elegant Ssupporting

confidence: 88%

“…However, gas phase studies have shown that Mg + reacts spontaneously with water in micro-seconds [11][12][13][14][15]. Moreover, Mg + is involved in the production of Grignard reagents [16], and Mg + is also common in stars as MgH [17].…”

Section: Issues To Be Addressedmentioning

confidence: 99%

Possible dissolution pathways participating in the Mg corrosion reaction

2015

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“…1 Due to the complexity of solution phase chemistry, the study of the intrinsic interaction between the metal and water is simplified by gas phase analysis. In particular, gas phase electronic spectroscopy experiments reveal information about a metal's electronic configuration and its effects on the ion's overall metal-water structure, including the metal-water bond.…”

Section: Introductionmentioning

confidence: 99%

Near ultraviolet photodissociation spectroscopy of Mn+(H2O) and Mn+(D2O)

Pearson

Copeland

Kocak

et al. 2014

The Journal of Chemical Physics

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excited states with T 0 = 30 210 and 32 274 cm −1 , respectively. Each electronic transition has partially resolved rotational and extensive vibrational structure with an extended progression in the metal−ligand stretch at a frequency of ∼450 cm −1 . There are also progressions in the in-plane bend in the 7 B 2 state, due to vibronic coupling, and the out-of-plane bend in the 7 B 1 state, where the calculation illustrates that this state is slightly non-planar. Electronic structure computations at the CCSD(T)/aug-cc-pVTZ and TD-DFT B3LYP/6-311++G(3df,3pd) level are also used to characterize the ground and excited states, respectively. These calculations predict a ground state Mn-O bond length of 2.18 Å. Analysis of the experimentally observed vibrational intensities reveals that this bond length decreases by 0.15 ± 0.015 Å and 0.14 ± 0.01 Å in the excited states. The behavior is accounted for by the less repulsive p x and p y orbitals causing the Mn + to interact more strongly with water in the excited states than the ground state. The result is a decrease in the Mn-O bond length, along with an increase in the H-O-H angle. The spectra have well resolved K rotational structure. Fitting this structure gives spin-rotation constants ε aa = −3 ± 1 cm −1 for the ground state and ε aa = 0.5 ± 0.5 cm −1 and aa = −4.2 ± 0.7 cm −1 for the first and second excited states, respectively, and A = 12.8 ± 0.7 cm −1 for the first excited state. Vibrationally mediated photodissociation studies determine the O-H antisymmetric stretching frequency in the ground electronic state to be 3658 cm −1 .

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“…Their properties have been investigated in considerable detail, with a wide range of experimental techniques, as reviewed recently [2][3][4][5][6][7]. Photodissociation in the O-H stretch region of the infrared, often coupled with tagging with a weakly bound species like Ar, is the most widely used spectroscopic method [8][9][10][11][12][13][14] [15] were characterized with infrared spectroscopy by Duncan and coworkers.…”

Section: Introductionmentioning

confidence: 99%

Photodissociation and photochemistry of V+(H2O)n, n = 1–4, in the 360–680 nm region

Scharfschwerdt

Linde

Balaj

et al. 2012

Low Temperature Physics

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The photodissociation and photochemistry of V + (H 2 O) n , n = 1-4, was studied in the 360-680 nm region in a Fourier transform ion cyclotron resonance mass spectrometer. The light of a high pressure mercury arc lamp was filtered with band pass filters, with center wavelengths from 360 to 680 nm in steps of 20 nm. The bandwidth of the filters, defined as full width at half maximum, was 10 nm. Photodissociation channels are loss of water molecules, as well as loss of atomic or molecular hydrogen, which may be accompanied by loss of water molecules. The most intense absorptions are red shifted with increasing hydration. Theoretical spectra are calculated with time dependent density functional theory. Calculations reproduce all features of the experimental spectra, including the red shift with increasing hydration shell and the overall pattern of strong and weak absorptions.

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Hydrated metal ions in the gas phase

Cited by 145 publications

References 237 publications

Possible dissolution pathways participating in the Mg corrosion reaction

Possible dissolution pathways participating in the Mg corrosion reaction

Near ultraviolet photodissociation spectroscopy of Mn+(H2O) and Mn+(D2O)

Photodissociation and photochemistry of V+(H2O)n, n = 1–4, in the 360–680 nm region

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