Exploring the Metal‐Centered Reactivity of Isomeric, <i>N</i>‐Bridged Biscyclometalated Platinum(II) Complexes
Bibliographic record
Abstract
Abstract The field of platinum chemistry is ubiquitous in the research of anticancer drugs and new OLED materials. Within the vast library of existing compounds, the majority of work focuses on complexes in the +2 and +4 oxidation states, with comparatively few examples of Pt III complexes reported without bridging ligands. Pt III complexes with metal‐metal bonding can be made by mild oxidation of Pt II complexes having bis(phenylpyridine) ligands. Here, we report the synthesis and characterization of two new Pt II complexes bearing tetradentate N ‐bridged bis(phenylpyridine) ligands with N^C*C^N and C^N*N^C coordinating atoms. Through chemical oxidation with PhICl 2 and N ‐chlorosuccinimide, we obtained four new complexes containing Pt IV and Pt III centres. The dynamics of the Pt III complexes were explored by variable‐temperature NMR studies and showed surprisingly free rotation of the appended N ‐aryl group. This work uncovers the importance of the destabilizing nature of the bulky N ‐aryl group on intermetallic bonds, and sheds light on how the molecular rotation observed in the Pt III compounds could inspire new molecular rotors driven by intermetallic bonds.
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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 | 0.002 | 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 | 0.001 | 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) | 0.001 | 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 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".