Reversible Dissociation of (Se<sub>6</sub>I<sub>2</sub>)(AsF<sub>6</sub>)<sub>2</sub> in SO<sub>2</sub>(I)
Bibliographic record
Abstract
The dissociation of (Se6I2)(AsF6)2 in SO2(1) has been investigated by 77Se NMR spectroscopy at –80 °C involving both a natural-abundance sample as well as that containing selenium enriched in the 77Se-isotope (enrichment 92 %). In addition to the previously characterized cations Se6I2 2+, SeI3 +, 1,1,4,4-Se4I4 2+, Se10 2+, Se8 2+, and Se4 2+, the NMR spectra of the equilibrium solution exhibited additional resonances the assignment of which has been carried out by 77Se-77Se COSY, selective irradiation experiments, and spectral simulation. Combining this information with the trends in the chemical shifts as well as with iodine, selenium, and charge balances that were calculated from quantitative integrated intensities, the presence of cyclic cations Se7[+ and 1,4-Se7I2 2+, as well as acyclic Se2I+, and 1,1,6,6-Se6I4 2+(two rotamers) could be inferred. Upon evaporation of the solvent only Se6I22+ was found to be present in the solid state.
Fetched live from OpenAlex and de-inverted. Abstracts are not stored in this database: the inverted indexes are 8.6 GB of the frame’s 9.3 GB of text, and the host has 13 GB free.
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) | 0.002 | 0.002 |
| Meta-epidemiology (broad) | 0.002 | 0.001 |
| Bibliometrics | 0.001 | 0.002 |
| Science and technology studies | 0.002 | 0.001 |
| Scholarly communication | 0.000 | 0.001 |
| Open science | 0.001 | 0.001 |
| Research integrity | 0.002 | 0.003 |
| 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; both teacher heads agree on what is shown here.
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".