The torsional vibration of the CO2–N2O complex determined from its infrared spectrum
Bibliographic record
Abstract
The spectra of the weakly bound complex CO(2)-N(2)O are studied in the regions of the nu(1) and nu(3) fundamentals of N(2)O and the nu(3) fundamental of CO(2) using a rapid-scan tunable diode laser spectrometer to probe a pulsed supersonic jet expansion. Five bands are measured and analyzed, of which four have not been previously studied. Two bands at 2225.75 and 1279.58 cm(-1), with a/b-type rotational structure, are assigned to the nu(1) and nu(3) fundamentals of the N(2)O component of the complex. Small perturbations are noted in the nu(3) band, similar to those observed previously for the nonpolar dimer (N(2)O)(2) in the nu(3) and nu(1)+nu(3) regions. The previously known band at 2348.86 cm(-1) in the region of the nu(3) CO(2) stretch is analyzed in improved detail. Weaker c-type bands at 2251.46 and 2374.67 cm(-1) are assigned as combinations of the intermolecular torsional (out-of-plane) vibration plus the N(2)O nu(1) and CO(2) nu(3) stretches, respectively. The resulting torsional frequency of CO(2)-N(2)O is experimentally determined for the first time to be 25.8 cm(-1).
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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) | 0.002 | 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 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".