Donor‐Stabilised [SbF<sub>4</sub>]<sup>+</sup>: SbF<sub>5</sub> as a Fluoride‐Ion Donor
Bibliographic record
Abstract
Abstract Antimony pentafluoride is a strong Lewis acid and fluoride‐ion acceptor that has not previously demonstrated any discreet fluoride‐ion donor properties. The first donor‐stabilised [SbF 4 ] + cations were prepared from the autoionisation of SbF 5 in the presence of bidentate N‐donor ligands 2,2’‐bipyridine (bipy) and 1,10‐phenanthroline (phen) as their [SbF 6 ] − salts. The [SbF 4 (N−N)][Sb 2 F 11 ] (N−N=bipy, phen) salts were synthesised by the addition of one equivalent of SbF 5 ⋅SO 2 to [SbF 4 (N−N)][SbF 6 ] in liquid SO 2. The salts show remarkable stability and were characterised by Raman spectroscopy and multinuclear NMR spectroscopy. The crystal structures of [SbF 4 (phen)][SbF 6 ] ⋅ 3CH 3 CN and [SbF 4 (phen)][SbF 6 ] ⋅ 2SO 2 were determined, showing distorted octahedral cations. DFT calculations and NBO analyses reveal that significant degree of electron‐pair donation from N to Sb stabilizes [SbF 4 ] + with the Sb−N bond strength being approximately two thirds of that of the Sb−F bonds in these cations and the cationic charge being primarily ligand‐centred.
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 | 0.001 | 0.001 |
| Meta-epidemiology (narrow) | 0.001 | 0.001 |
| Meta-epidemiology (broad) | 0.001 | 0.001 |
| Bibliometrics | 0.000 | 0.001 |
| Science and technology studies | 0.001 | 0.000 |
| Scholarly communication | 0.001 | 0.000 |
| Open science | 0.001 | 0.001 |
| Research integrity | 0.001 | 0.004 |
| Insufficient payload (model declined to judge) | 0.003 | 0.001 |
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".