Bibliographic record
Abstract
[13770-96-2] AlH4Na (MW 54.01) InChI = 1S/Al.Na.4H/q-1;+1;;;; InChIKey = MNYCIYRTKITUKR-UHFFFAOYSA-N (reducing agent similar in activity to LiAlH4;1 deoxygenative dimerization of carbonyls and alcohols;11a hydroalumination of alkenes and alkynes11b) Physical Data: mp 180–183 °C (dec with evolution of H2); d 1.28 g cm−3. Solubility: sol THF, DME, diglyme; insol ether, hydrocarbons. Form Supplied in: white crystalline solid. Analysis of Reagent Purity: iodometric titration;10b H content determined by gas evolution analysis; Al content determined by EDTA–Zn(OAc)2 back titration at pH 4 using dithizone as an indicator.9a Purification: recrystallization from a THF–benzene solvent mixture by addition of benzene, followed by partial removal of the solvent under vacuum. The white solid is collected and dried under vacuum before dissolving in freshly distilled THF. Handling, Storage, and Precautions: severe fire and explosion hazard in contact with oxidizing agents and water, forms caustic and irritant compounds; stable in dry air at room temperature. Solutions in THF or diglyme appear to be stable for at least several months if not exposed to air. To preserve reactivity it is best to store wet with toluene than to store dry. 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 | 0.001 | 0.001 |
| Meta-epidemiology (narrow) | 0.001 | 0.001 |
| Meta-epidemiology (broad) | 0.001 | 0.001 |
| Bibliometrics | 0.001 | 0.001 |
| Science and technology studies | 0.002 | 0.000 |
| Scholarly communication | 0.001 | 0.001 |
| Open science | 0.003 | 0.001 |
| Research integrity | 0.001 | 0.002 |
| Insufficient payload (model declined to judge) | 0.104 | 0.068 |
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".