Bibliographic record
Abstract
[82097-93-6] C12H27CuSn (MW 353.65) InChI = 1S/3C4H9.Cu.Sn/c3*1-3-4-2;;/h3*1,3-4H2,2H3;; InChIKey = BQXNARKRLDXPOX-UHFFFAOYSA-N (incorporation of tributyltin via reaction with electrophilic substrates1-6) Physical Data: prepared in situ; its THF solution is dark red. Solubility: sol THF. Preparative Methods: Bu3SnCu 1 is prepared by reaction of Tri-n-butylstannyllithium with 1 equiv of Copper(I) Iodide (eq 1).1, 2, 5, 8 A closely related reagent, Bu3SnCuċMe2S (see Trimethylstannylcopper–Dimethyl Sulfide), is readily obtained by treatment of Bu3SnLi with an equimolar quantity of CuBrċMe2S 2 (see Copper(I) Bromide) (eq 2).3, 4, 9-13 (1) (2) Handling, Storage, and Precautions: should be prepared in dry solvent and used under an inert atmosphere. Organotin compounds are toxic;7 therefore, reaction workup should be carried out 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 | 0.000 |
| Meta-epidemiology (broad) | 0.001 | 0.000 |
| Bibliometrics | 0.001 | 0.001 |
| Science and technology studies | 0.001 | 0.000 |
| Scholarly communication | 0.000 | 0.001 |
| Open science | 0.001 | 0.001 |
| Research integrity | 0.000 | 0.001 |
| Insufficient payload (model declined to judge) | 0.046 | 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".