Synthesis and properties of ionic liquids based on 1-methyl-3-(2-phenethyl)imidazolium
Bibliographic record
Abstract
The synthesis and properties of three ionic liquids based on 1-methyl-3-(2-phenethyl)imidazolium cation ([MPIm]) and the chloride, tetrafluoroborate, and hexafluorophosphate anions have been investigated. The proposed quaternization and anion exchange processes afforded quantitative amounts of the three ionic liquids, and very pure [MPIm][BF 4 ] and [MPIm][PF 6 ] were obtained after recrystallization from ethanol. [MPIm][BF 4 ] showed low melting point and high electrical conductivity. These ionic liquids (immiscible with diethyl ether but miscible with water and DMSO) absorb air moisture, increasing their mass and decreasing their viscosity. The results of NMR spectroscopy ( 1 H, 13 C, and 19 F) and X-ray structure determination confirm the possibility of ion-pair and hydrogen-bond formation in [MPIm][BF 4 ].
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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 | 0.001 |
| 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".