Synthesis, Structure, and Bonding of a Xe<sup>IV</sup> Transition‐Metal Coordination Complex, F<sub>3</sub>XeF<sub>b</sub>‐ ‐ ‐WOF<sub>4</sub>
Bibliographic record
Abstract
Abstract The coordination complex, F 3 XeF b ‐ ‐ ‐WOF 4 , was synthesized in CFCl 3 solvent by reaction of the weak fluoride‐ion donor and strong oxidative fluorinating agent, XeF 4 , with the moderate‐strength fluoride‐ion acceptor, WOF 4 . The compound is the only transition‐metal coordination complex of Xe IV and was characterized at low temperatures by single‐crystal X‐ray diffraction and Raman spectroscopy. Xenon tetrafluoride and WOF 4 coordinate trans to the W=O bond through a W‐ ‐ ‐F b bond. The XeF 3 moiety of F 3 XeF b ‐ ‐ ‐WOF 4 acquires a degree of [XeF 3 ] + character upon coordination that is reflected by its Xe−F stretching frequencies which are intermediate with respect to those of XeF 4 and [XeF 3 ] + . Calculations show W‐ ‐ ‐F b is predominantly an electrostatic, σ‐hole bond with a significant orbital contribution that accounts for the bent Xe−F b ‐ ‐ ‐W angle. The calculations show F 3 XeF b ‐ ‐ ‐MOF 4 (M=Cr, Mo) are less stable than their W analogue, consistent with failed attempts to synthesize F 3 XeF b ‐ ‐ ‐MoOF 4 .
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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) | 0.001 | 0.001 |
| Meta-epidemiology (broad) | 0.001 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.001 | 0.000 |
| Scholarly communication | 0.000 | 0.001 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.001 |
| Insufficient payload (model declined to judge) | 0.001 | 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".