Evidence for the co-existence of isomers of water dimer radical cations and their inter-conversion in a linear ion trap

Zhang, Xinglei; Zhang, Yunpeng; Zhou, Xin; Xu, Jin; Mi, Dongbo

doi:10.1016/j.heliyon.2023.e17763

Cited by 2 publications

(4 citation statements)

References 33 publications

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“…Further, the hemi‐bonded isomer was verified as the intermediate complex in the proton transfer between H 2 O + ⋅ and H 2 O [28] . Notably, recent research further validated the interconversion using a linear ion trap mass spectrometer [31] …”

Section: Water Radical Cations In the Gas Phase And In Solutionmentioning

confidence: 84%

“…One noteworthy property of (H 2 O) 2 + ⋅ is its lifetime, which is intimately linked to the chemical environment. For instance, (H 2 O) 2 + ⋅ can persist in an ion trap for at least 200 ms, and the monomeric form exhibits an even longer lifetime, lasting for at least 800 ms [31] . This differs notably from the lifetime of water radical cation in aqueous solution (less than a few hundred femtoseconds) [28,32,33] .…”

Section: Water Radical Cations In the Gas Phase And In Solutionmentioning

confidence: 98%

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Spontaneous Oxidation in Aqueous Microdroplets: Water Radical Cation as Primary Oxidizing Agent

Qiu,

Cooks

2024

Angew Chem Int Ed

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Exploration of the unique chemical properties of interfaces can unlock new understanding. A striking example is the finding of accelerated reactions, particularly spontaneous oxidation reactions, that occur without assistance of catalysts or external oxidants at the air interface of both aqueous and organic solutions (provided they contain some water). This finding opened a new area of interfacial chemistry but also caused heated debate regarding the primary chemical species responsible for the observed oxidation. An overview of the literature covering oxidation in microdroplets with air interfaces is provided, together with a critical examination of previous findings and hypotheses. The water radical cation/radical anion pair, formed spontaneously and responsible for the electric field at or near the droplet/air interface, is suggested to constitute the primary redox species. Mechanisms of accelerated microdroplet reactions are critically discussed and it is shown that hydroxyl radical/hydrogen peroxide formation in microdroplets does not require that these species be the primary oxidant. Instead, we suggest that hydroxyl radical and hydrogen peroxide are the products of water radical cation decay in water. The importance of microdroplet chemistry in the prebiotic environment is sketched briefly and the role of partial solvation in reaction acceleration is noted.

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Section: Water Radical Cations In the Gas Phase And In Solutionmentioning

confidence: 84%

Section: Water Radical Cations In the Gas Phase And In Solutionmentioning

confidence: 98%

Spontaneous Oxidation in Aqueous Microdroplets: Water Radical Cation as Primary Oxidizing Agent

Qiu,

Cooks

2024

Angew Chem Int Ed

View full text Add to dashboard Cite

show abstract

“…[28] Notably, recent research further validated the interconversion using a linear ion trap mass spectrometer. [31] One noteworthy property of (H 2 O) 2 + * is its lifetime, which is intimately linked to the chemical environment. For instance, (H 2 O) 2 + * can persist in an ion trap for at least 200 ms, and the monomeric form exhibits an even longer lifetime, lasting for at least 800 ms. [31] This differs notably from the lifetime of water radical cation in aqueous solution (less than a few hundred femtoseconds).…”

Section: Water Radical Cations In the Gas Phase And In Solution 21 Ge...mentioning

confidence: 99%

“…[31] One noteworthy property of (H 2 O) 2 + * is its lifetime, which is intimately linked to the chemical environment. For instance, (H 2 O) 2 + * can persist in an ion trap for at least 200 ms, and the monomeric form exhibits an even longer lifetime, lasting for at least 800 ms. [31] This differs notably from the lifetime of water radical cation in aqueous solution (less than a few hundred femtoseconds). [28,32,33] Meanwhile, in solution, the solvation behavior of water radical cation differs between monomeric and dimeric forms.…”

Section: Water Radical Cations In the Gas Phase And In Solution 21 Ge...mentioning

confidence: 99%

Spontaneous Oxidation in Aqueous Microdroplets: Water Radical Cation as Primary Oxidizing Agent

Qiu,

Cooks

2024

Angewandte Chemie

View full text Add to dashboard Cite

show abstract

Evidence for the co-existence of isomers of water dimer radical cations and their inter-conversion in a linear ion trap

Cited by 2 publications

References 33 publications

Spontaneous Oxidation in Aqueous Microdroplets: Water Radical Cation as Primary Oxidizing Agent

Spontaneous Oxidation in Aqueous Microdroplets: Water Radical Cation as Primary Oxidizing Agent

Spontaneous Oxidation in Aqueous Microdroplets: Water Radical Cation as Primary Oxidizing Agent

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