Xenon Trioxide Adducts of <i>O</i> ‐Donor Ligands; [(CH <sub>3</sub> ) <sub>2</sub> CO] <sub>3</sub> XeO <sub>3</sub> , [(CH <sub>3</sub> ) <sub>2</sub> SO] <sub>3</sub> (XeO <sub>3</sub> ) <sub>2</sub> , (C <sub>5</sub> H <sub>5</sub> NO) <sub>3</sub> (XeO <sub>3</sub> ) <sub>2</sub> , and [(C <sub>6</sub> H <sub>5</sub> ) <sub>3</sub> PO] <sub>2</sub> XeO <sub>3</sub>
Bibliographic record
Abstract
Abstract Xenon trioxide (XeO 3 ) forms adducts with triphenylphosphine oxide, dimethylsulfoxide, pyridine‐ N ‐oxide, and acetone by coordination of the ligand oxygen atoms to the Xe VI atom of XeO 3 . The crystalline adducts were characterized by low‐temperature, single‐crystal X‐ray diffraction, and Raman spectroscopy. Unlike solid XeO 3 , which detonates when mechanically or thermally shocked, solid (C 5 H 5 NO) 3 (XeO 3 ) 2 , [(C 6 H 5 ) 3 PO] 2 XeO 3 , and [(CH 3 ) 2 SO] 3 (XeO 3 ) 2 are insensitive to mechanical shock. The [(CH 3 ) 2 SO] 3 (XeO 3 ) 2 adduct slowly decomposes over several days to (CH 3 ) 2 SO 2 , Xe, and O 2 . All three complexes undergo rapid deflagration when ignited by a flame. Both [(C 6 H 5 ) 3 PO] 2 XeO 3 and (C 5 H 5 NO) 3 (XeO 3 ) 2 are room‐temperature stable and the [(CH 3 ) 2 CO] 3 XeO 3 complex dissociates at room temperature to form a stable solution of XeO 3 in acetone. The xenon coordination sphere of [(C 6 H 5 ) 3 PO] 2 XeO 3 , a distorted square‐pyramid, provides the first example of a five‐coordinate XeO 3 complex with only two Xe‐ ‐ ‐O adduct bonds. The xenon coordination spheres of the remaining adducts are distorted octahedra, comprised of three Xe‐ ‐ ‐O secondary bonds that are approximately trans to the primary Xe−O bonds of XeO 3 . Quantum‐chemical calculations were used to assess the nature of the Xe‐ ‐ ‐O adduct bonds, which are described as predominantly electrostatic bonds between the nucleophilic oxygen atoms of the bases and the σ‐holes of the electrophilic xenon atoms.
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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 | 0.036 | 0.019 |
| Meta-epidemiology (narrow) | 0.057 | 0.067 |
| Meta-epidemiology (broad) | 0.047 | 0.039 |
| Bibliometrics | 0.027 | 0.042 |
| Science and technology studies | 0.028 | 0.026 |
| Scholarly communication | 0.024 | 0.029 |
| Open science | 0.041 | 0.027 |
| Research integrity | 0.033 | 0.068 |
| Insufficient payload (model declined to judge) | 0.001 | 0.023 |
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".