Bis(acetonitrile)(η<sup>4</sup>-1,5-cyclooctadiene) Rhodium(I) Tetrafluoroborate
Bibliographic record
Abstract
[32679-02-0] C12H18BF4N2Rh (MW 379.99) InChI = 1S/C8H12.2C2H3N.BF4.Rh/c1-2-4-6-8-7-5-3-1;2*1-2-3;2-1(3,4)5;/h1-2,7-8H,3-6H2;2*1H3;;/q;;;-1;+1/b2-1-,8-7-;;;; InChIKey = KSMAFOANQHYEJG-SUESZSCISA-N (catalyst for the formation of C–C bonds between various organic electrophiles and organometallic reagents. Also used as a catalyst for hydroformylation and hydrogenation reactions) Physical Data: mp 188–190 °C (dec).2 Solubility: soluble in most organic solvents; insoluble in H2O. Form Supplied in: yellow crystals, commercially available from Aldrich (cat. #640360). Analysis of Reagent Purity: melting point, IR.2 Preparative Methods: can be prepared by reaction of [RhCl(cod)]2 and AgBF4 in CH2Cl2 and CH3CN, followed by filtration, concentration of the reaction solution, and precipitation of the product using Et2O.3 A similar synthesis has also been performed using Ph3CBF4 instead of AgBF4.2 Purification: recrystallization can be done from acetonitrile with slow addition of diethyl ether. Handling, Storage, and Precautions: store in a cool, dry place in a tightly sealed container. Handle and store under an inert atmosphere of nitrogen or argon. May cause mild to severe irritation of the eyes, skin, nose, mucous membrane, or respiratory tract. Avoid ingestion, inhalation, or direct contact with skin or clothing. The toxicological effects of this reagent have not been thoroughly tested; unknown hazards may be present. Chemical-safety goggles and appropriate gloves are highly recommended. Use only in a chemical fume hood and near safety shower and eye bath. Do not breathe dust. Compound is incompatible with oxidizing agents and active metals and decomposes to carbon dioxide, carbon monoxide, boron oxides, hydrogen fluoride, and rhodium salts.
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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) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.014 | 0.011 |
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".