A Structural Probe for Organogold(I) Rings and [2]Catenanes
Bibliographic record
Abstract
The digold(I) diacetylides [4-RC 6 H 9 (4-C 6 H 4 OCH 2 C⋮CAu) 2 ], which contain a cyclohexylidene hinge group 4-RC 6 H 9 with R = H or t -Bu, react with diphosphine ligands Ph 2 PZPPh 2 to give the corresponding macrocycles or [2]catenanes [{4-RC 6 H 9 (4-C 6 H 4 OCH 2 C⋮CAu) 2 (μ-Ph 2 PZPPh 2 )} y ] [Z = C⋮C, (CH 2 ) 2, (CH 2 ) 3, or (CH 2 ) 4; y = 1, 2, or 4]. When R = t -Bu, the bulky tert -butyl group locks the cyclohexane ring conformation and so provides a good NMR spectroscopic probe of the structure. The organogold(I) [2]catenane complexes are chiral when R = t -Bu, and the complex with Z = (CH 2 ) 4 gives an equilibrium in solution between ring, double-ring, and [2]catenane. When R = H and Z = (CH 2 ) 3, the variable-temperature NMR spectra give new insight into the fluxionality in the [2]catenane complex, and when R = H and Z = (CH 2 ) 4, it is shown that the complex exists in solution as the ring structure, although it crystallizes as a doubly braided [2]catenane.
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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 | 0.000 | 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) | 0.000 | 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 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".