CO2 reduction via aluminum complexes of ammonia boranes
Bibliographic record
Abstract
Reactions of amine-boranes NH3BH3, Me2NHBH3, or Me3NBH3 with AlX3 (X = Cl, Br, I, C6F5) have been examined. The species AlBr3·H3BNMe3 2, Al(C6F5)3·H3BNMe3 3, Al(C6F5)3·H3BNHMe2 4 and Al(C6F5)3·H3BNH3 5 have been prepared and isolated. The analogous reaction of B(C6F5)3 and H3BNMe3 results in C6F5-transfer and the formation of (C6F5)BH2·NMe3 6. While the adduct 6 was unreactive to CO2, species 3 reacts with CO2 to give the formate linked Al(C6F5)3(HCO2)H2BNMe38. The species R3PC(OAl(C6F5)3)2 (R = o-tol (1'-C6F5), R = Mes (1-C6F5)) were prepared, and 1'-C6F5 was shown to react with amine-boranes to effect the reduction of this bound-CO2 to formate and methoxide-derivatives, proceeding through intermediates including 8 and [(Me3NBH2)2(μ-H)][(HCO2)(Al(C6F5)3)2] 9. The salt [tBu3PH][(HCO2)(Al(C6F5)3)2] 10 was prepared independently.
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How this classification was reachedexpand
Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| 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) | 0.020 | 0.000 |
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 teacher head, 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".