Magnetic and Electrochemical Properties of a Heterobridged μ‐Phenoxido–μ<sub>1,1</sub>‐Azide Dinickel(II) Compound: A Unique Example Demonstrating the Bridge Distance Dependency of Exchange Integral
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Bibliographic record
Abstract
Abstract The synthesis, structure, magnetic and electrochemical properties of the heterobridged μ‐phenoxido–μ 1,1 ‐azide dinickel(II) compound [Ni II 2 (HL 1 ) 3 (μ 1,1 ‐N 3 )] · 3H 2 O ( 1 ) derived from the tetradentate Schiff base ligand N ‐(2‐hydroxyethyl)‐3‐methoxysalicylaldimine (H 2 L 1 ) are described. The title compound crystallizes in the triclinic system (space group P $\bar {1}$ ). Electrochemical analyses reveal that compound 1 exhibits two‐step quasireversible couples in the reduction window with E 1/2 values of –1412 and –1762 mV. The variable‐temperature (2–300 K) magnetic susceptibilities at 1 T of the title compound were measured. The interaction between the metal centres is weak ferromagnetic ( J = 5.0 cm –1 , g = 2.23, D 1 = 29.2 cm –1 and D 2 = 10.7 cm –1 ). Comparison of the exchange integral of 1 with that of the only reported μ‐phenoxido–μ 1,1 ‐azide dinickel(II) compound results in the emergence of a unique example of the dependence of strength of magnetic exchange interaction on the metal–ligand bridge distance. (© Wiley‐VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2009)
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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 | 0.001 | 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 | 0.001 | 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