Bibliographic record
Abstract
(Ni2B)2 [12007-01-1] BNi2 (MW 128.19) 1S/B.2Ni InChIKey = WRLJWIVBUPYRTE-UHFFFAOYSA-N (selective hydrogenation catalyst,1a,c,3 desulfurization catalyst;4 reduces nitro5 and other functional groups;1a dehalogenation catalyst;1b,6 hydrogenolysis7 catalyst) Physical Data: mp 1230 °C.8 Solubility: insol aqueous base and most organic solvents; reacts with concentrated aqueous acids. Form Supplied in: black granules, stoichiometry varies with supplier. Preparative Methods: to a stirred suspension of 1.24 g (5 mmol) of powdered Nickel(II) Acetate in 50 mL of 95% ethanol is added 5 mL of a 1 M solution of Sodium Borohydride in 95% ethanol at room temperature (control frothing). Stirring is continued until the gas evolution ceases (usually 30 min). The flask is used directly in the hydrogenation.1c,9a This catalyst is nonpyrophoric. Handling, Storage, and Precautions: caution must be taken in handling nickel salts. Ingestion of soluble nickel salts causes nausea, vomiting, and diarrhea. Nickel chloride has an LD50 (iv) = 40–80 mg kg−1 in dogs. Many nickel salts will sublime in vacuo. Nickel metal is carcinogenic and certain nickel compounds may reasonably be expected to be carcinogenic.
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 | 0.001 |
| 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 | 0.001 | 0.001 |
| Insufficient payload (model declined to judge) | 0.046 | 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".