Binuclear and Starburst Organoplatinum(II) Complexes of 2,2‘-Dipyridylamino Derivative Ligands: Structures, Fluxionality, and Luminescence
Why this work is in the frame
A frame that forgets how it found something cannot be audited. These are the routes that admitted this work.
Bibliographic record
Abstract
New binuclear and starburst trinuclear organoplatinum complexes based on 2,2‘-dipyridylamino (dpa) derivative ligands, Pt 2 Ph 4 (bab), bab = 1,4-bis(2,2‘-dipyridylamino)benzene, 1, Pt 2 Ph 4 (babp), babp = 4,4‘-bis(2,2‘-dipyridylamino)biphenyl, 2, Pt 3 Ph 6 (tab), tab = 1,3,5-tris(2,2‘-dipyridylamino)benzene, 3, Pt 3 Ph 6 (tat), tat = 2,4,6-tris(2,2‘-dipyridylamino)-1,3,5-triazine, 4, Pt 3 Ph 6 (tapb), tapb = 1,3,5-tris[ p -(2,2‘-dipyridylamino)phenyl]benzene, 5, Pt 3 Ph 6 (tapt), tapt = 2,4,6-tris[ p -(2,2‘-dipyridylamino)phenyl]-1,3,5-triazine, 6, Pt 3 Ph 6 (tabpb), tabpb = 1,3,5-tris{4‘-[4‘ ‘-(2,2‘-dipyridylamino)]biphenyl}benzene, 7, and Pt 3 Ph 6 (tabpt), tabpt = 1,3,5-tris{4‘-[4‘ ‘-(2,2‘-dipyridylamino)]biphenyl}benzene, 8, were synthesized by the reaction of [PtPh 2 (SMe 2 )] n with the corresponding chelate ligand. The structures of complexes 1 − 5 and 8 were determined by single-crystal X-ray diffraction. All eight complexes have phosphorescent emissions in the blue/green region at 77 K, attributed to ligand-centered π → π* transitions. Ligand-based fluorescent emission was also detected for complexes 5, 6, and 8 . Complexes 1 − 8 display versatile structures in the solid state. Complex 4 was found to be fluxional in solution. The key factors that influence the structures of the complexes in solution and the solid state are the degree of conjugation of the amino nitrogen lone pair electrons of the dpa unit with the central aromatic linker and intramolecular nonbonding interactions.
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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 | 0.001 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.001 | 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