A simple synthetic route to the formation of tetracopper(I) 2-mercaptothiazoline compounds The crystal structures of [Cu<sub>4</sub>(S-thiaz)<sub>4</sub>(PEt<sub>2</sub>Ph)<sub>2</sub>], [Cu<sub>4</sub>(S-thiaz)<sub>4</sub>(PEt<sub>3</sub>)<sub>2</sub>], [Cu<sub>4</sub>(S-thiaz)<sub>4</sub>]<sub>2</sub>, and [Cu<sub>4</sub>(S-thiaz)<sub>4</sub>]<sub>4</sub>
Bibliographic record
Abstract
Reactions of copper(I) acetate with 2-mercaptothiazoline (HS-thiaz) in the presence of tertiary phosphines lead to the formation of tetranuclear sulphur-bridged copper complexes. Depending on the reaction conditions, isolated clusters ([Cu 4 (S-thiaz) 4 (PR 3 ) 2 ] (PR 3 = PPh 3 (1), PEt 2 Ph (2), PEt 3 (3)), oligomeric compounds ([Cu 4 (S-thiaz) 4 ] 2 (4) and [Cu 4 (S-thiaz) 4 ] 4 (5)), or a one-dimensional polymer ([Cu 4 (S-thiaz) 4 ] ∞ (6)) are formed. The structures of the compounds 25 have been determined by single crystal X-ray analysis.Key words: copper, 2-mercaptothiazoline, single crystal X-ray analysis.
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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 | 0.021 | 0.012 |
| Meta-epidemiology (narrow) | 0.022 | 0.022 |
| Meta-epidemiology (broad) | 0.025 | 0.015 |
| Bibliometrics | 0.013 | 0.018 |
| Science and technology studies | 0.013 | 0.015 |
| Scholarly communication | 0.007 | 0.011 |
| Open science | 0.017 | 0.006 |
| Research integrity | 0.012 | 0.027 |
| Insufficient payload (model declined to judge) | 0.000 | 0.002 |
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".