Exploring the reactivity of a coordinatively unsaturated Cp*Ru(κ2-P,O) complex with small molecule substrates: application in E–H bond activation (E = H, B, and Si)
Bibliographic record
Abstract
Treatment of [Cp*RuCl](4) with 1-diisopropylphosphino-2-indanone () afforded Cp*Ru(Cl)(kappa(2)-P,O-) () in 96% isolated yield. Dehydrohalogenation of under an atmosphere of N(2) provided the dinuclear complex (78% isolated yield), which is comprised of two coordinatively unsaturated Cp*Ru(kappa(2)-P,O) fragments () linked by an end-on coordinated micro-N(2) ligand. Although complex has not been observed directly, reactivity studies demonstrated that can serve as a convenient source of . Isolable adducts of were prepared via exposure of to an atmosphere of CO (93% yield, ) or two equivalents of PhCN (91% yield, ). Exposure of to an atmosphere of H(2) afforded the adduct .(sigma-H(2)) () quantitatively; the clean conversion of back into occurred upon evacuation and re-introduction of a N(2) atmosphere. Treatment of with two equivalents of PhSiH(3) or Ph(2)SiH(2) afforded products featuring (H)(2)Ru-SiPhX-O fragments ( and , respectively; both 95% isolated yield) corresponding to net double geminal Si-H bond activation of the organosilane in which the extruded silylene fragment has inserted into the Ru-O bond of the putative intermediate . Similar reactivity was observed upon treatment of with two equivalents of mesitylborane to give (82% isolated yield). While minimal Ru-HSi interactions were identified for , in solution and the solid state, the hydride ligands in were observed to bridge ruthenium and boron. Crystallographic characterization data were obtained for .0.5C(6)H(6), , , and .
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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 | 0.001 |
| 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) | 0.000 | 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".