The First <i>P</i>‐Stereogenic 1D Coordination Polymers with the Metal Centers in the Backbone
Bibliographic record
Abstract
Abstract The enantiomeric ligands ( R , R )‐ and ( S , S )‐bis( o ‐anisylphenylphosphanyl)methane ( R , R ‐ 22 and S , S ‐ 22 ) and ( R , R )‐ and ( S , S )‐bis(phenyl‐ m ‐xylylphosphanyl)methane ( R , R ‐ 23 and S , S ‐ 23 ; dppm*), were treated with [Cu(NCCH 3 ) 4 ](BF 4 ) and AgBF 4 to produce the binuclear complexes [Cu 2 (dppm*) 2 (NCCH 3 ) 4 ](BF 4 ) 2 or [Ag 2 (dppm*) 2 ](BF 4 ) 2 , respectively. Then, these complexes were used as building blocks to prepare the first P ‐chirogenic 1D coordination polymers {[M 2 (dppm*) 2 (dmb) 2 ](BF 4 ) 2 } n [dppm* = ( R , R )‐ 22 , ( S , S )‐ 22 , ( R , R )‐ 23 , ( S , S )‐ 23 , M = Cu, Ag, dmb = 1,8‐diisocyano‐ p ‐menthane] where M is part of the backbone of the polymer chain. The isostructural nature of these new polymers with the achiral parent polymers, {[M 2 (dppm) 2 (dmb) 2 ](BF 4 ) 2 } n (M = Cu, Ag), was unambiguously demonstrated with a combination of methods including 1 H NMR, chemical analysis, UV/Vis spectrometry, emission spectroscopy and emission lifetime measurements. The structure of the bimetallic complex [Ag 2 ( R , R ‐ 23 ) 2 ](BF 4 ) 2 was solved by X‐ray crystallography, and all enantiomeric complexes and polymers were characterized by circular dichroism spectroscopy.
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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 | 0.001 | 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 | 0.002 | 0.000 |
| Research integrity | 0.000 | 0.001 |
| Insufficient payload (model declined to judge) | 0.002 | 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".