Highly Varying Photophysical Properties of Thiocarbonyls: Validation of Fundamental Theoretical Concepts of Electronic Radiationless Transitions
Bibliographic record
Abstract
A homologous series of gas-phase thiocarbonyl compounds displays highly variable photophysical properties. Thus, while thioformaldehyde, H 2 CS, and thiocyclopentanone, H 8 C 5 S, exhibit fluorescence as well as phosphorescence, thiophosgene, Cl 2 CS, displays fluorescence but not phosphorescence, and thiocyclobutanone, H 6 C 4 S, exhibits neither fluorescence nor phosphorescence. We show here that the very different emission characteristics of the four closely related thiocarbonyls can be rationalized on the basis of the presence or absence of the promoting mode for S 1 → S 0 internal conversion and the extent of S 1 and T 1 nonplanarity at the thiocarbonyl center.
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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 | 0.001 |
| 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 | 0.001 |
| 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".