Bibliographic record
Abstract
Abstract Recent developments in the study of silyl radicals have been spectacular. Two decades ago, only short‐lived silyl radicals were known and only a few were spectroscopically characterized. Since then, many new types of persistent and stable silyl radicals were synthesized, isolated, and characterized by electron paramagnetic resonance (EPR) spectroscopy, and several also by X‐ray crystallography. These exciting developments are reviewed in this article. The review consist of five sections: 1. Introduction; 2. Tris(silyl) substituted silyl radicals; 3. Bis(silyl) silicon‐centered radicals X(R3Si)2Si·, where X is a nonsilyl substituent; 4. Anion radicals and metal‐substituted silyl radicals; 5. Conclusions and outlook. The article overviews the methods for the generation and synthesis of silyl radicals, the factors that control their stability and structure, and their EPR parameters. The isolation of stable silyl radicals, anion radicals, and diradicals opens new opportunities for their application as new materials with unique chemical, photophysical, and magnetic properties.
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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 | 0.001 | 0.001 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.001 |
| Insufficient payload (model declined to judge) | 0.004 | 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; 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".