The First Lanthanide Complexes with a Redox‐Active Sulfur Diimide Ligand: Synthesis and Characterization of [LnCp*<sub>2</sub>(RN=)<sub>2</sub>S], Ln=Sm, Eu, Yb; R=SiMe<sub>3</sub>
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Bibliographic record
Abstract
Abstract The first lanthanide complexes with a redox‐active sulfur diimide ligand, [LnCp* 2 (Me 3 SiN=) 2 S] (Ln=Sm, Eu, Yb; Cp*=η 5 ‐C 5 Me 5 ), are reported. The complexes were synthesized by using [LnCp* 2 (THF) 2 ] and (Me 3 SiN=) 2 S and have been thoroughly characterized by single‐crystal X‐ray diffraction, EPR spectroscopy, UV/Vis/NIR electronic absorption spectroscopy and SQUID magnetometry. The results, as interpreted by CASSCF/SOC‐RASSI calculations providing a non‐perturbative treatment of spin‐orbit coupling, indicate that these paramagnetic complexes are best described as Ln 3+ and [(Me 3 SiN=) 2 S] − . adducts. As such, these complexes contain the first isolated and structurally characterized acyclic [(RN=) 2 S] − . radical anions.
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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 | 0.002 | 0.001 |
| Meta-epidemiology (narrow) | 0.001 | 0.000 |
| Meta-epidemiology (broad) | 0.001 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.001 | 0.001 |
| Scholarly communication | 0.001 | 0.001 |
| Open science | 0.001 | 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 it