Lewis Acidity of Pt-Doped Buckybowls, Fullerenes, and Single-Walled Carbon Nanotubes
Bibliographic record
Abstract
The Lewis acidic character of alkyl- and arylplatinum complexes has been investigated within density functional theory with an emphasis on supramolecular structures (e.g., buckybowls, fullerenes, and nanotubes) doped with Pt atoms. By selective substitution of a single atom within a larger carbon framework with a Pt atom, the resulting species demonstrate a strong preference for interaction with small organic molecules, particularly polar substances via a Lewis acid/Lewis base complexation. Coordination with CO and maleic anhydride offers a gauge of comparing the Lewis acidity of these alkyl- and arylplatinum complexes. We have also examined the use of these organometallic species as catalysts for the Diels−Alder reaction and have found that curved π-conjugation and delocalization of electrons offer modest rate enhancements and improvements in selectivity. Preliminary results suggest that extended molecular architectures such as Pt-doped nanotubes may provide selectivities that differ from that of traditional Lewis acid catalysts.
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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) | 0.000 | 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) | 0.000 | 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 teacher head, 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".