INFRARED SPECTRUM OF CO-O2, A 'NEW' WEAKLY-BOUND COMPLEX
Bibliographic record
Abstract
Only a few weakly-bound complexes containing the O$_{2}$ molecule have been characterized by high-resolution spectroscopy, notably N$_{2}$O-O$_{2}$ [1] \nand HF-O$_{2}$ [2]. This neglect is no doubt due in part to the complications added by the oxygen unpaired electron spin. Here we report an extensive infrared spectrum of CO-O$_{2}$, as observed in the CO fundamental band region ($\\sim$2150 \\wn) using a tunable quantum cascade laser to probe a pulsed supersonic jet expansion. The derived energy level pattern consists of ‘stacks’ characterized by $K$, the projection of the total angular momentum on the intermolecular axis. Five such stacks are observed in the ground vibrational state, and ten in the excited state, v(CO) = 1. They are divided into two groups, with no observed transitions between groups, and we believe these groups correlate with the two lowest rotational states of O$_{2}$, namely ($N$, $J$) = (1, 0) and (1, 2). In many ways, the spectrum and energy levels are similar to those of CO-N$_{2}$ [3], and we use the same approach for analysis, simply fitting each stack with its own origin, $B$-value, and distortion constants. The rotational constant of the lowest stack in the ground state (with $K$ = 0) implies an effective intermolecular separation of 3.82 \\AA, but this should be interpreted with caution since it ignores possible effects of electron spin. \n\\vskip 0.2 truecm \n[1] H.-B. Qian, D. Seccombe, and B.J. Howard, \\textit{J. Chem. Phys.} \\textbf{107}, 7658 (1997). \n \n[2] W.M. Fawzy, C.M. Lovejoy, D.J. Nesbitt, and J.T. Hougen, \\textit{J. Chem. Phys.} \\textbf{117}, 693 (2002)
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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) | 0.000 | 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) | 0.011 | 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".