Kinetics and Mechanism of Electron Transfer Reaction of an Adipato Bridged Iron(III)-Salen Complex with Dithionite Ion in Perchloric Acid Medium
Bibliographic record
Abstract
Redox kinetics of the reaction of an adipato bridged iron(III)-salen complex, [(Fe(salen))2adi] with dithionite ion, S2O4 2-, was investigated in perchloric acid at I = 0.05 mol dm -3 (NaClO4) and T = 29 1 C. Spectrophotometric titrations indicated consumption of one mole of S2O4 2-per mole of [(Fe(salen))2adi] reduced. Under pseudo-first order conditions of [S2O4 2-] above ten-fold excess of concentration of [(Fe(salen))2adi], observed rates increased with increase in [S2O4 2-] and second order rate constants were fairly constant (0.285 0.01 dm 3 mol -1 s -1 ) indicating first order dependence of the rate on [(Fe(salen))2adi]. A plot of logkobs versus log[S2O4 2-] was linear and gave a slope of 1.0 indicating first order dependence of the rate on [S2O4 2-]. The reaction rate increased with increase in [H + ] within 3 10 -3 mol dm -3 [H + ] 14 10 -3 mol dm -3 . The reaction was unaffected by variation of ionic strength and dielectric constant of the medium. Addition of anion and cation did not catalyze the reaction. The reaction has been analyzed on the basis of an inner-sphere mechanism mediated by proton transfer.
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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) | 0.000 | 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) | 0.000 | 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; 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".