Resistance of a PdAu<sub>12</sub>(8e) Core to Growth in Collision-Induced Sequential Reductive Elimination of (C≡CR)<sub>2</sub> from [PdAu<sub>24</sub>(C≡CR)<sub>18</sub>]<sup>2–</sup>
Bibliographic record
Abstract
Previous studies have reported that [PdAu 24 (PA F ) 18 ] 2– (PA F = 3,5-(CF 3 ) 2 C 6 H 3 C≡C) with an icosahedral superatomic PdAu 12 (8e) core underwent collision-induced sequential reductive elimination (CISRE) of 1,3-diyne (PA F ) 2 ( J. Phys. Chem. C 2020, 124, 19119). The most likely scenario after the CISRE of (PA F ) 2 is the growth of the PdAu 12 (8e) core via the fusion of the Au(0) atoms produced from the Au 2 (PA F ) 3 units on the core surface. Contrary to expectation, anion photoelectron spectroscopy and theoretical calculations regarding the CISRE products [PdAu 24 (PA F ) 18–2 n ] 2– ( n = 1–6) revealed that the electronically closed PdAu 12 (8e) core does not grow to a single superatom with (8 + 2 n )e but assembles with Au 2 (2e) units. Characterization of the CISRE products of other alkynyl-protected Au clusters suggested that even the non-superatomic Au 17 (8e) core was resistant to growth due probably to rigidification by PA ligands. We propose that there is a kinetic bottleneck in the growth process of protected Au clusters at the stage where they are electronically closed and/or lose their structural fluxionality by ligation.
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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) | 0.001 | 0.001 |
| Meta-epidemiology (broad) | 0.001 | 0.001 |
| Bibliometrics | 0.000 | 0.001 |
| Science and technology studies | 0.000 | 0.001 |
| Scholarly communication | 0.000 | 0.001 |
| Open science | 0.001 | 0.000 |
| Research integrity | 0.000 | 0.001 |
| 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".