[1]Ferrocenophanes, [1]Chromarenophanes, and [1]Vanadarenophanes with Aluminium and Gallium in Bridging Positions
Why this work is in the frame
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Bibliographic record
Abstract
Aluminum- and gallium-bridged [1]ferrocenophanes ( 4a, 4b ), [1]chromarenophanes ( 5a, 5b ), and [1]vanadarenophanes ( 6a, 6b ) were synthesized from the respective dilithiated sandwich compounds with element dichlorides (Me 2 Ntsi)ECl 2 [E = Al, Ga; Me 2 Ntsi = C(SiMe 3 ) 2 (SiMe 2 NMe 2 )] in moderate to high isolated yields (54−97%). The new intramolecularly stabilized aluminum compound (Me 2 NCH 2 tsi)AlCl 2 ( 2a ) was synthesized, but was proven to be unreactive with respect to [Fe(LiC 5 H 4 ) 2 ]·2/3TMEDA. The diamagnetic species 2a, 4a, 4b, 5a, and 5b were characterized by NMR spectroscopy ( 1 H, 13 C, 27 Al), CHN elemental analysis, and mass spectrometry, whereas the paramagnetic compounds 6a and 6b were characterized by IR spectroscopy, CHN elemental analysis, and mass spectrometry. In addition, the molecular structures of compounds 2a, 4a, 4b, 5a, 5b, 6a, and 6b were determined by single-crystal X-ray analysis. All [1]cyclophanes are strained species, as revealed by the following tilt angles α [deg]: 14.33(14) ( 4a ), 15.83(19) ( 4b ), 11.81(9) ( 5a ), 13.24(13) ( 5b ), 14.65(14) ( 6a ), and 15.63(14) ( 6b ).
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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 | 0.001 |
| 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) | 0.004 | 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