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Record W2042969596 · doi:10.1255/ejms.683

A Study of the Methane Catalyzed Isomerization of HCO <sup>+</sup> to HOC <sup>+</sup> and the Elimination of Methane from Metastable Methoxymethyl Cation

2004· article· en· W2042969596 on OpenAlex
Travis D. Fridgen

Why this work is in the frame

A frame that forgets how it found something cannot be audited. These are the routes that admitted this work.

affAt least one author lists a Canadian institution in the pinned OpenAlex snapshot.
fundA Canadian funder is recorded on the work.

Bibliographic record

VenueEuropean Journal of Mass Spectrometry · 2004
Typearticle
Languageen
FieldPhysics and Astronomy
TopicAdvanced Chemical Physics Studies
Canadian institutionsUniversity of OttawaWilfrid Laurier University
FundersWilfrid Laurier University
KeywordsIsomerizationDissociation (chemistry)MetastabilityChemistryMethaneCatalysisIonPhysical chemistryPhotochemistryOrganic chemistry

Abstract

fetched live from OpenAlex

Electronic structure calculations on the methane catalyzed HCO + /HOC + potential energy surface have been conducted. The results show that 1,2-proton transfer from C to O can be efficiently catalyzed by CH 4 . The complex CH 4 /HCO + and the closely related species, CH 5 + /CO, are separated from the methoxymethyl cation CH 3 OCH 2 + by a large potential energy barrier. It follows from the calculations that the metastable methoxymethyl cation is very unlikely to dissociate to yield HOC + . New experiments also show that HOC + is not produced to any observable extent. A new explanation is proposed for the composite peak for m/z 29 observed from metastable dissociation of metastable methoxymethyl cation. The two components both arise from the formation of HCO + , but via different transition states. The minor, narrow, component involves dissociation from the CH 5 + /CO complex and the broad peak from the CH 4 /HCO + ion–molecule complex.

Fetched live from OpenAlex and de-inverted. Abstracts are not stored in this database: the inverted indexes are 8.6 GB of the frame’s 9.3 GB of text, and the host has 13 GB free.

Full frame distilled prediction

Teacher imitation

Not calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.

metaresearch head score (Codex)0.002
metaresearch head score (Gemma)0.000
Version: codex-gemma-dda1882f352aValidation status: machine_predicted_unvalidated
Candidate categoriesnone
Consensus categoriesnone
DomainCandidate signal: none · Consensus signal: none
Study designCandidate signal: Bench or experimental · Consensus signal: Bench or experimental
GenreCandidate signal: Empirical · Consensus signal: Empirical
Teacher disagreement score0.117
Threshold uncertainty score0.705

Codex and Gemma teacher scores by category

CategoryCodexGemma
Metaresearch0.0020.000
Meta-epidemiology (narrow)0.0000.000
Meta-epidemiology (broad)0.0010.000
Bibliometrics0.0000.001
Science and technology studies0.0000.000
Scholarly communication0.0000.000
Open science0.0010.000
Research integrity0.0000.000
Insufficient payload (model declined to judge)0.0000.000

Machine scores (provisional)

The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.

Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.

Opus teacher head0.011
GPT teacher head0.243
Teacher spread0.232 · how far apart the two teachers sit on this one work
Validation statusscore_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from it