Bibliographic record
Abstract
[2023-48-5] C18H15BiF2 (MW 478.30) InChI = 1S/3C6H5.Bi.2FH/c3*1-2-4-6-5-3-1;;;/h3*1-5H;;2*1H/q;;;+2;;/p-2 InChIKey = OSGJIYNQSIPLAQ-UHFFFAOYSA-L (synthesis of bismuthonium salts,8-23 oxidative fluorination,24 arylation reactions,25-30 allylation reactions,31 chlorine–fluorine metathesis,32 and synthesis of carbonates33) Physical Data: mp 159 °C.1 Solubility: soluble in acetone, chloroform, and diethyl ether; slightly soluble in petroleum ether.1 Preparative Methods: readily prepared from Ph3BiCl2 by action of KF in ethanol,1 NaF in acetone,2 or AgF in acetonitrile.3 Obtained by treatment of Ph3Bi(OCHO)2 with aqueous NaF in benzene4 or by treatment of Ph3Bi(OSO2Ar)2 (Ar = 2,5-Me2C6H3) with aqueous NaF in ethanol.5 It can also be synthesized by reaction of Ph3BiCO3 or Ph3Bi(OAc)2 with hexafluoropropene oxide (HFPO) in benzene6 or by oxidation of Ph3Bi with XeF2.7 Handling, Storage, and Precaution: store under inert atmosphere and use in a fume hood.
Fetched live from OpenAlex and de-inverted. Abstracts are not stored in this database: the inverted indexes are 8.6 GB of the frame’s 9.3 GB of text, and the host has 13 GB free.
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 | 0.001 |
| Meta-epidemiology (broad) | 0.001 | 0.000 |
| Bibliometrics | 0.001 | 0.001 |
| Science and technology studies | 0.001 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.001 | 0.001 |
| Research integrity | 0.001 | 0.001 |
| Insufficient payload (model declined to judge) | 0.037 | 0.029 |
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".