Organoaluminum(III) complexes of the bis-N,N[prime]-(2,6-diisopropylphenyl)imidazolin-2-imine ligand
Bibliographic record
Abstract
The reaction of trimethylaluminum with the bis-N,N 0 -(2,6-diisopropylphenyl)imidazolin-2-imine (L-H) ligand 1 afforded several new organometallic aluminium complexes.Reaction in a 1 : 1 stoichiometry at room temperature afforded a Lewis acid-base adduct, whereas thermolysis resulted in the loss of methane and the formation of a dimer complex, (L-AlMe 2 ) 2 , 3. When reacted in a 1 : 2 ratio at 110 C, the loss of two equivalents of methane yielded L 2 AlMe, 5, whereas when the reaction was performed at 60 C, (L-H)AlMe 2 (L), 4, was found as an intermediate in the reaction.Compound 2 is, to the best of our knowledge, the first example of a structurally characterized primary imine coordinated to a triorganoaluminum(III) center.Attempts to form a two coordinate aluminum cation by CH 3 À abstraction are documented.All products were characterized via normal spectroscopic techniques and single crystal X-ray diffraction.Scheme 1 Mesomeric forms of imidazolin-2-iminato ligands.
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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) | 0.000 | 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) | 0.002 | 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 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".