Surrogates of 2,2′-Bipyridine Designed to Chelate Ag(I) and Create Metallotectons for Engineering Hydrogen-Bonded Crystals
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Bibliographic record
Abstract
6-(Pyridin-2-yl)-1,3,5-triazine-2,4-diamine ( 1 ), 6-(pyrazin-2-yl)-1,3,5-triazine-2,4-diamine ( 2 ), and 6-(pyrimidin-2-yl)-1,3,5-triazine-2,4-diamine ( 3 ) incorporate two key structural features: (1) They resemble 2,2′-bipyridine and can therefore be expected to chelate suitable metals; and (2) they simultaneous incorporate diaminotriazinyl (DAT) groups, which engage in hydrogen bonding according to reliable patterns. As a result, ligands 1 − 3 are designed to react with metals to generate predictable structures held together by multiple coordinative interactions and hydrogen bonds. In particular, they react with salts of Ag(I) to yield cationic chelates analogous to those formed by 2,2′-bipyridine itself. As planned, DAT groups play a primary role in determining the observed structures, as demonstrated by their ability to engage in particularly favorable patterns of hydrogen bonding that require substantial deformation of the geometry of metallic coordination. An elegant hydrogen-bonded zipper, created spontaneously by combining simple ligand 3 with Ag(I), illustrates the power of qualitative approaches to crystal engineering based on a dual understanding of inorganic and organic chemistry.
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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) | 0.001 | 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) | 0.000 | 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