Microwave Spectrum, Geometry, and Hyperfine Constants of PdCO
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Bibliographic record
Abstract
The pure rotational spectrum of palladium monocarbonyl, PdCO, has been measured between 6000 and 24 000 MHz using a cavity pulsed jet Fourier transform microwave spectrometer. The molecules were prepared by laser ablation of Pd in the presence of CO contained in an Ar backing gas. The spectra of 15 isotopomers have been used to determine the molecular geometry from the measured rotational constants. Centrifugal distortion constants are in good agreement with those calculated from a literature harmonic force field. A nuclear quadrupole coupling constant and nuclear spin-rotation constant have been determined for 105 Pd. Nuclear shielding parameters have been evaluated from the measured spin-rotation constant. The geometry is discussed with reference to theoretical data and to other molecules containing an M−CO bond.
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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) | 0.000 | 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 it