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 distilled prediction
Teacher imitationNot 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.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.001 | 0.001 |
| Meta-epidemiology (broad) | 0.001 | 0.000 |
| Bibliometrics | 0.000 | 0.001 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.001 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.001 | 0.001 |
| Insufficient payload (model declined to judge) | 0.003 | 0.001 |
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; both teacher heads agree on what is shown here.
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".