Synthesis and Reactivity of a Terminal Scandium Imido Complex
Why this work is in the frame
A frame that forgets how it found something cannot be audited. These are the routes that admitted this work.
Bibliographic record
Abstract
Preparation of a terminal scandium imido complex, 2 ·DMAP, was accomplished through thermolysis of an arylamido methyl complex, 1, stabilized by a bulky β-diketiminato ligand in the presence of 4- N, N -dimethylaminopyridine (DMAP). Mechanistic studies revealed that the reaction proceeds by initial metalation of 1, followed by rapid DMAP-promoted alkane elimination to generate the scandium imido complex. Kinetic studies of the reaction between separately synthesized metalate 3 and DMAP under pseudo-first-order conditions yielded activation parameters of Δ H ⧧ = 73.5(2) kJ mol –1 and Δ S ⧧ = −70.4(5) J K –1 mol –1 . The reaction of 2 ·DMAP with tert -butyl amine or phenylacetylene resulted in addition of the N–H or C–H bond across the scandium imide linkage, respectively, to furnish complexes endo- / exo -4 and endo -5 . These compounds were fully characterized, including via structural analysis, providing further evidence for the terminal scandium imido derivative 2 ·DMAP.
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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 | 0.001 |
| 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) | 0.007 | 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 it