Reactions of SO<sub>2</sub> with <i>trans</i>-Ir(CO)(Cl)(TPPTS)<sub>2</sub> in water
Bibliographic record
Abstract
Reaction of SO2 with trans-Ir(CO)(Cl)(TPPTS)2 in water mirrors the nature of SO2 dissolved in water. At low pH (pH = 1) where SO2 exists as the hydrated species SO2·H2O, only Ir(CO)(Cl)(SO2)(TPPTS)2 forms. At higher pH (pH = 6) where HSO3 dominates, no SO2 complex is observed and a hydride, Ir(CO)(Cl)(H)(OH)(TPPTS)2, is the primary product. A mixture of SO2 and O2 does not lead to an iridium sulfate or show any evidence of the dioxygen adduct upon reaction in water with trans-Ir(CO)(Cl)(TPPTS)2, in contrast to the analogous reaction in organic solvents. In water, only the SO2 complex, Ir(CO)(Cl)(SO2)(TPPTS)2, is observed prior to decomposition. The contrasts to the PPh3 analogues in organic solvents provide further insight to water as a solvent for organometallic complexes.Key words: iridium(I), sulfur dioxide, water soluble, TPPTS.
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How this classification was reachedexpand
Full frame machine prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.
Distilled classifier scores by category (both heads)
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.002 | 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 source (direct Gemma or distilled Codex), 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".