Synthesis, Spectroscopic and Molecular Studies of Half‐Sandwich η<sup>6</sup>‐Arene Ruthenium, Cp* Rhodium and Cp* Iridium Metal Complexes with Bidentate Ligands
Why this work is in the frame
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Bibliographic record
Abstract
Abstract The bidentate ligand benzoyl(2‐pyridyl)thiourea ( L1 ) was prepared by reaction of benzoyl isothiocyanate with primary amine (2‐aminopyridine) but the reaction with secondary amine bis(2‐pyridyl)amine, yielded the unexpected product bis(2‐pyridyl)benzoylamine ( L2 ). Mononuclear complexes of the general formula [(η 6 ‐arene)Ru(L)Cl] + {where, L = L1 , arene = benzene ( 1 ); p ‐cymene ( 2 ); L = L2 , arene = benzene ( 5 ); p ‐cymene ( 6 )} and [Cp* M (L)Cl] + {where, L = L1 , M = Rh ( 3 ), Ir ( 4 ); L = L2 , M = Rh ( 7 ), Ir ( 8 )}, respectively, were formed by reaction of the ligands L1 and L2 with precursor complexes [(η 6 ‐arene)Ru( μ ‐Cl)Cl] 2 and [Cp* M ( μ ‐Cl)Cl] 2 ( M = Rh, Ir). The cationic complexes were characterized by FT‐IR, UV/Vis, and 1 H‐NMR spectroscopy as well as mass spectrometry. X‐ray crystallographic studies of these complexes reveal piano‐stool‐like arrangements around the metal atoms with six‐membered metallacycles in which L1 and L2 act as a N, S‐ and N, N' chelating ligands, respectively.
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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 | 0.000 |
| Meta-epidemiology (narrow) | 0.001 | 0.001 |
| Meta-epidemiology (broad) | 0.002 | 0.000 |
| Bibliometrics | 0.000 | 0.001 |
| Science and technology studies | 0.000 | 0.001 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.001 | 0.001 |
| 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 it