Flash vacuum thermolysis of 3,4‐dimethyl‐1‐germacyclopent‐3‐enes: UV photoelectron spectroscopic characterization of GeH<sub>2</sub> and GeMe<sub>2</sub>
Bibliographic record
Abstract
Abstract Gas‐phase UV photoelectron spectra of germylene (GeH 2 ) and its dimethyl analogue (GeMe 2 ) have been recorded, using flash vacuum thermolysis of 3,4‐dimethyl‐ and 1,1,3,4‐tetramethyl‐germacyclopent‐3‐ene to generate these reactive species in the inlet of the photoelectron spectrometer. The lowest vertical ionization bands for GeH 2 (9.4 eV) and GeMe 2 (8.2 and 10.0 eV) have been located with the aid of time‐dependent density functional theory calculations carried out at the B3LYP/6‐311G(d,p) level of theory. Similar experiments carried out with 3,4‐dimethyl‐1,1‐diphenylgermacyclopent‐3‐ene, in an attempt to record the photoelectron spectrum of diphenylgermylene (GePh 2 ), were less conclusive, but are consistent with the theoretically predicted lowest lonization potential of 8.0–8.2 eV for GePh 2 . Photoelectron spectra of the three germacyclopentene derivatives are also reported. Copyright © 2004 John Wiley & Sons, Ltd.
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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 | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.001 | 0.001 |
| 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 | 0.001 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.002 | 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 teacher head, 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".