Matrix-isolation pyrolysis investigation of mercapto-functionalized 1,3,4-thiadiazoles: thermal stability of thiadiazole lubricant additives
Why this work is in the frame
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Bibliographic record
Abstract
A series of high-vacuum thermolysis experiments with alkyldithio thiadiazoles was performed between ambient temperature and 900 degrees C to investigate the thermal stability of thiadiazole type lubricant additives. The thermolysis products were trapped by matrix-isolation techniques and characterized by IR spectroscopy. Thermolysis of 2-(tert-butyldithio)-5-methyl-,3,4-thiadiazole (TB1) gave 2-methylpropene, isothiocyanic acid (HNCS), 2-mercapto-5-methyl-1,3,4-thiadiazole (McMT), hydrogen cyanide (HCN), carbon disulfide (CS2), acetonitrile (CH3CN), and elemental sulfur S(x) [x = (2), 4, 6, 8]. A decomposition mechanism is discussed explaining the temperature-dependent composition of product mixtures, and a general precursor concept for organosulfur type anti-wear additives is presented.
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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) | 0.001 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.001 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.001 | 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 it