Dinuclear Iron, Cobalt and Uranium Complexes of New Diamidoether Ligands
Bibliographic record
Abstract
A series of new diamidoether ligands of the form {[RN(SiMe2)]2O}2- (R = 2,4,6-Me3Ph, 2,6-iPr2Ph, 3,5-(CF3)2Ph), termed [RNON]2-, were prepared via dilithiation of the precursors H2[RNON], which were synthesized from the reaction of O(SiMe2Cl)2 with the appropriate lithium amide. Reaction of the previously reported Li2[tBuNON] with FeX3 (X=C1, Br) yields dinuclear halide-bridged iron(III) complexes that show an unusual quantum spin-admixed magnetic state. Complexes of iron(III) with the aryl-NON ligands, however, form rare lithium “ate” structures. {[RNON]Co}2 complexes (R=tBu, 2,4,6-Me3Ph) are dinuclear with amido bridges and Co-Co bonds. Each Co(II) centre is roughly trigonal monopyramidal. The analogous reactions with UO2C12(THF)3 give dark red powders. For R=tBu, {UO2[tBuNON]}2 complexes are formed that may have structures similar to {[RNON]Co}2.
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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) | 0.001 | 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".