Cover Feature: Fluorination/Dearomatization of C<sub>6</sub>F<sub>5</sub> Groups: An FLP Route to an Electrophilic Borane and Non‐Coordinating Anions (Chem. Eur. J. 43/2024)
Bibliographic record
Abstract
The Cover Feature highlights our finding that treatment of B(C6F5)3 adducts and related anions with XeF2 in the presence of BF3 or Lewis acidic cations affords the fluorination of arene rings to give the borane adducts (L)B(C6F7)3 (L = MeCN, OPEt3) and the anions [FB(C6F7)3]−, [B(C6F7)4]−, and [(C6F7)3BC≡NB(C6F7)3]−. These fluorinations proceed as [XeF][BF4] acts as a frustrated Lewis pair, with an exceptionally strong electrophilic cation and a nucleophilic anion. These findings suggest a route to unprecedented boranes and weakly coordinating anions. More information can be found in the Research Article by Z.-W. Qu, D. W. Stephan and co-workers (DOI: 10.1002/chem.202401776).
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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) | 0.001 | 0.000 |
| Meta-epidemiology (broad) | 0.001 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.001 | 0.000 |
| Scholarly communication | 0.001 | 0.001 |
| Open science | 0.001 | 0.001 |
| Research integrity | 0.001 | 0.001 |
| Insufficient payload (model declined to judge) | 0.235 | 0.040 |
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".