Ruthenium(III) complexes containing bi- and tridentate phosphorus−nitrogen ligands
Bibliographic record
Abstract
Air-stable Ru III complexes containing a bidentate aminophosphine ligand (PN) of the type mer-RuCl 3 (PN)(PR 3 ) are made from the precursors RuCl 3 (PR 3 ) 2 (DMA)·DMA (PN = o-diphenylphosphino-N,N′-dimethylaniline (P−N) and (R)-N,N′-dimethyl-1-[o-diphenylphosphinophenyl]ethylamine ((R)-AMPHOS); R = Ph, p-tolyl; DMA = N,N′-dimethylacetamide). With the tridentate bis[o-(N,N′-dimethylamino)phenyl]phenylphosphine (BNP), the product is mer-RuCl 3 (BNP) (3), while tris[o-(N,N′-dimethylaminophenyl)phosphine (TNP) is unreactive toward the precursor. Crystal structures of mer-RuCl 3 (PN)(PPh 3 ), where PN is P−N (2a), (R)-AMPHOS (4a), and 3·CHCl 3 are reported as well as those of (R)-AMPHOS, BNP, and TNP. The Ru III −aminophosphine complexes are the first monomeric Ru III species to be formed via the useful, easily synthesized, air-stable Ru III precursors RuCl 3 (PR 3 ) 2 (DMA)·DMA (1a and 1b); complex 2a is formed also via reaction of HCl with trans-RuCl 2 (P−N)(PPh 3 ). A crystal structure of mer,cis-RuCl 3 (DMA) 2 (PPh 3 )·DMA (1c), a side-product from the synthesis of the Ru III precursor, is also presented and is the first-reported complex of DMA with Ru III . Preliminary data show that the Ru III −aminophosphine complexes in DMA (a proton-accepting solvent) are reduced by H 2 to Ru II species that can react further to form an η 2 -H 2 adduct and then a Ru II -hydridochloro species.
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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".