Dinuclear, Tetranuclear and Chain (Mn<sup>II</sup>, Co<sup>II</sup>) Complexes of Multifunctional Hydrazone Ligands – Structural and Magnetic Studies
Bibliographic record
Abstract
Abstract The coordination chemistry of a group of hydrazone‐based ligands, modified with carboxylate and heterocyclic terminal donor groups, with Mn II and Co II has been investigated. The multifunctional nature of the ligands allows coordinative flexibility based on the hydrazone core, which is well established to lead to spin‐coupled polymetallic assemblies through μ‐O hydrazone bridging. Examples of dinuclear, tetranuclear and chain complexes are reported with hydrazone, carboxylate and triazole bridging. Spin exchange through the μ‐O and μ‐N,N bridging connections leads to antiferromagnetic exchange in most cases, except for the central subunit in the Mn II 4 chain complex, where small (< 90°) bridge angles result in contributing ferromagnetic interactions.
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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 | 0.001 | 0.001 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.001 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| 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) | 0.004 | 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".