Bis(η<sup>2</sup>-ethene)(2,4-pentanedionato-<i>O</i>,<i>O</i>′)rhodium
Bibliographic record
Abstract
[12082-47-2] C9H15O2Rh (MW 258.12) InChI = 1S/C5H8O2.2C2H4.Rh/c1-4(6)3-5(2)7;2*1-2;/h3,6H,1-2H3;2*1-2H2;/q;;;+1/p-1/b4-3-;;; InChIKey = FLRBEQQDEGBCJS-FGSKAQBVSA-M (catalyst for the formation of C–C bonds. Also used in hydrogermylation, hydrosilylation, and oxidation reactions) Alternate Name: acetylacetonatobis(ethylene)rhodium(I), bis(η2-ethylene)(pentan-2,4-dionato-O,O′)rhodium, bis(η2-etilen) (pentano-2,4-dionato-O,O′)rodio, (acetylacetonato)bis (ethylene) rhodium, 2,4-pentanedionatobis(ethylene)rhodium, 2,4-pentanedionatobis(ethylene)rhodium(I), acetylacetonatobis (ethylene)rhodium(I), bis(ethylene)(2,4-pentanedionato)rhodium, bis (ethylene)rhodium(I) acetylacetonate, bis(ethylene)rhodium acetylacetonate, diethylene(acetylacetonato)rhodium, (2,4-pentanedionato)bis(ethylene)rhodium, bis(η2-ethene)(2,4-pentanedionato-O,O′)rhodium, bis(ethylene)(2,4-pentanedionato) rhodium, rhodium acetylacetonate, rhodium di(ethene)acetylacetonate, aceylacetonatorhodium. Physical Data: mp 144–146 °C (dec).1 Solubility: soluble in most organic solvents; insoluble in H2O.1 Form Supplied in: yellow to orange crystals, commercially available. Analysis of Reagent Purity: mp,1 IR.1 Preparative Methods: can be prepared by reaction of di-μ-chlorotetrakis(ethylene)dirhodium(I) and 2,4-pentanedione in diethyl ether with dropwise addition of KOH in water.1,2 Purification: recrystallization can be done from diethyl ether or methanol. 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. Disposal: dispose off according to the local, state, provincial, and federal guidelines relating to rhodium compounds and organometallic reagents. Small spills can be mixed with vermiculite, sodium carbonate, or other suitable non-combustible adsorbent and swept up. Compound is incompatible with oxidizing agents and active metals and decomposes to carbon dioxide, carbon monoxide, organic fumes, 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) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.012 | 0.005 |
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".