Sequential Selective Formation of Adsorbed<i>tert</i>-Butoxy and<i>tert</i>-Butyl Groups from<i>tert</i>-Butyl Formate on Ni(111)
Bibliographic record
Abstract
The sequential preparation of tert -butoxy and tert -butyl groups on Ni(111) was achieved through the thermal decomposition of adsorbed tert -butyl formate. The two intermediates were characterized using infrared reflection−absorption spectroscopy, XPS, and TPD measurements. The initial step, below 250 K, yielded coadsorbed tert -butoxy, carbon monoxide, and atomic hydrogen. The second step, in the temperature range 310−370 K, produced adsorbed oxygen atoms and surface tert -butyl groups through scission of the tert -butoxy C−O bond. The complete removal of the tert -butoxy groups coincided with the recombinative desorption of hydrogen adatoms derived from the formyl group of the parent molecule. The decomposition of the tert -butyl groups at 410 K coincided with the desorption limited removal of CO from the surface. Quantitative XPS analysis confirmed that the decomposition of tert -butyl formate on Ni(111) proceeds exclusively through the sequential formation of tert -butoxy and tert -butyl groups.
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How this classification was reachedexpand
Full frame machine prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.
Distilled classifier scores by category (both heads)
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.001 | 0.000 |
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.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; a candidate call from one source (direct Gemma or distilled Codex), not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".