Surface Diastereomeric Complexes Formed by Methyl Benzoylformate and (<i>R</i>)-1-(1-Naphthyl)ethylamine on Pt(111)
Bibliographic record
Abstract
The formation of diastereomeric complexes between methyl benzoylformate (MBF) and ( R )-1-(1-naphthyl)ethylamine, ( R )-NEA, on Pt(111) was studied using scanning tunneling microscopy. We observe several distinct geometries formed by 1:1 and 2:1 MBF/( R )-NEA complexes. The complexation patterns are compared with our previous data for 2,2,2-trifluoroacetophenone, (TFAP)/( R )-NEA, and methyl-3,3,3 trifluoropyruvate, (MTFP)/( R )-NEA, complexes on Pt(111). Steric hindrance due to the phenyl group forces MBF to form complexes that are inverted relative to those formed by MTFP. Compared to TFAP, the addition of the ester group, permitting intermolecular bonding through either the ester or the keto-carbonyl or both, increases the number of complexation geometries that the substrate can adopt. In particular, the ketoester group permits the phenyl group to be placed distant from ( R )-NEA at several positions while also permitting NH···OC bonding. Overall, this leads to a decrease of the prochiral selectivity relative to TFAP/( R )-NEA complexes.
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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 | 0.001 | 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".