Binuclear Platinum(IV) Complexes with Bridging Amidoalkyl Groups and Their Self-Assembly through Hydrogen Bonding
Bibliographic record
Abstract
Oxidative addition of the reagents {4-BrCH 2 C 6 H 4 -(CH 2 ) x -C(═O)NH-(CH 2 ) y } 2 Z to [PtMe 2 (bu 2 bipy)], bu 2 bipy = 4,4′-di- t -butyl-2,2′-bipyridine, gave the corresponding diplatinum(IV) complexes [{PtBrMe 2 (bu 2 bipy)-4-CH 2 C 6 H 4 -(CH 2 ) x -C(═O)NH-(CH 2 ) y } 2 Z], with Z = o -, m -, or p -C 6 H 4 and x, y = 0 or 1; or Z = 1,2-C 2 H 4 and x = y = 0. The complexes are formed selectively by trans oxidative addition to both platinum(II) centers and contain long bridging alkanediyl ligands containing two amide units in the backbone. Several iodide analogues were prepared by displacement of bromide from the bromoplatinum(IV) complexes by reaction with lithium iodide, and in one case, a chloride derivative was formed by the reaction of a bromoplatinum(IV) complex with solvent carbon tetrachloride. In the solid state, the compounds undergo self-assembly to form supramolecular polymers, ribbon polymers, or a sheet structure by forming intermolecular hydrogen bonds of the type NH···O═C, NH···BrPt or NH···ClPt.
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How this classification was reachedexpand
Full frame machine prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.
Distilled classifier scores by category (both heads)
| 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 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.001 | 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 source (direct Gemma or distilled Codex), 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".