Preparation, characterization, and structure of two dipyrrolide thorium homoleptic complexes Isolation of a dipyrrolide dipotassium salt with an inverted-sandwich type of structure
Bibliographic record
Abstract
Reactions of the in-situ-generated potassium salts of the dipyrroles (C4H3NH)2C(CH3)2 and of (C4H3NH)2C(CH3)(C6H5) with ThCl4(DME)2 has afforded the corresponding homoleptic ({[(C4H3N)2C(CH3)2]3Th}[K2(DME)])n (1) and {[(C4H3N)2C(CH3)(C6H5)]3Th}[K2(DME)] (2). In the case of 1, the solid state polymeric structure was elucidated by X-ray diffraction analysis. Preliminary attempts to reduce these species have so far afforded only intractable materials. Just in the case of 2, it was possible to isolate the corresponding ligand dipotassium salt {(C4H3NH)2C(CH3)(C6H5)[K(DME)]2}n (3) as the only characterizable material. This species possesses an unprecedented inversed-sandwich type of structure. Key words: thorium, homoleptic, dipyrrolide.
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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) | 0.001 | 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 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".