Hexa-μ-hydrohexakis(triphenylphosphine)hexacopper
Bibliographic record
Abstract
[33636-93-0] C108H96Cu6P6 (MW 1961.16) InChI = 1S/6C18H15P.6Cu.6H/c6*1-4-10-16(11-5-1)19(17-12-6-2-7-13-17)18-14-8-3-9-15-18;;;;;;;;;;;;/h6*1-15H;;;;;;;;;;;;/q;;;;;;6*+1;6*-1 InChIKey = ULHDRBNWPMPZLA-UHFFFAOYSA-N (chemo- and stereoselective conjugate reduction;2, 3 catalytic, hydride-mediated, reduction of enones and ketones;4 reduction of alkynes and propargyl alcohols to cis-alkenes5) Alternate Name: triphenylphosphine copper hydride hexamer. Physical Data: mp 111 °C (dec).1b Solubility: sol benzene, toluene, THF (∼1 g/10 mL); reacts with CH2Cl2 and CHCl3. Form Supplied in: bright red crystals to dark red powders; commercially available. Analysis of Reagent Purity: assay by means of hydrogen evolution.1b 1H NMR spectroscopy (deaerated benzene-d6) shows ligated and, if present, free Ph3P. Preparative Method: prepared by hydrogenolysis of Ph3P-stabilized Copper(I) t‐Butoxide,1c,d which can be generated in situ from t-BuONa and Copper(I) Chloride.1e Purification: Ph3P is removed by recrystallization from benzene layered with hexanes or acetonitrile under anaerobic conditions, or by trituration with deaerated hexanes or acetonitrile.1e Handling, Storage, and Precautions: has an indefinite shelf life if stored under an inert atmosphere; can be handled briefly in the air without harm and is stable toward water. The reagent is highly air sensitive in solution; thus only rigorously deoxygenated solvents should be used. For bench top manipulation, transfer of the bulk reagent to a Schlenk tube that can be easily opened under a purge of inert gas and evacuated and backfilled after each use is recommended.
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 | 0.000 | 0.001 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.001 | 0.000 |
| Research integrity | 0.000 | 0.001 |
| Insufficient payload (model declined to judge) | 0.037 | 0.031 |
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".