Radical‐Bridged Ln<sub>4</sub> Metallocene Complexes with Strong Magnetic Coupling and a Large Coercive Field
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Bibliographic record
Abstract
Abstract Inducing magnetic coupling between 4 f elements is an ongoing challenge. To overcome this formidable difficulty, we incorporate highly delocalized tetrazinyl radicals, which strongly couple with f ‐block metallocenes to form discrete tetranuclear complexes. Synthesis, structure, and magnetic properties of two tetranuclear [(Cp* 2 Ln) 4 (tz . ) 4 ]⋅3(C 6 H 6 ) (Cp*=pentamethylcyclopentadienyl; tz=1,2,4,5‐tetrazine; Ln=Dy, Gd) complexes are reported. An in‐depth examination of their magnetic properties through magnetic susceptibility measurements as well as computational studies support a highly sought‐after radical‐induced “giant‐spin” model. Strong exchange interactions between the Ln III ions and tz . radicals lead to a strong magnet‐like behaviour in this molecular magnet with a large coercive field of 30 kOe.
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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) | 0.000 | 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) | 0.003 | 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