Oxidation Reactions of Lanthanide Cations with N<sub>2</sub>O and O<sub>2</sub>: Periodicities in Reactivity
Why this work is in the frame
A frame that forgets how it found something cannot be audited. These are the routes that admitted this work.
Bibliographic record
Abstract
The oxidation reactions of all of the lanthanide cations (except Pm + ) with N 2 O and O 2 have been investigated using the inductively coupled plasma selected-ion flow tube (ICP/SIFT) technique. Lanthanide cations were generated in an inductively coupled plasma (ICP) ion source. Observations are reported for the reactions of La +, Ce +, Pr +, Nd +, Sm +, Eu +, Gd +, Tb +, Dy +, Ho +, Er +, Tm +, Yb +, and Lu + with N 2 O and O 2 at room temperature (295 ± 2 K) in helium at a total pressure of 0.35 ± 0.02 Torr. Measured reaction rates varied from close to the predicted ion−molecule collision rate down to less than 0.1% efficiency. Observations are rationalized in terms of reaction thermodynamics and electronic structure effects. The efficiency for the reactions with N 2 O was found to decrease as the energy required to promote the metal-ion electron from the 4f n 5d 0 6s 1 to the 4f n -1 5d 1 6s 1 configuration increases. Remarkable and different Arrhenius-like correlations are found in the N 2 O reactivity of the early and late lanthanide cations with this electron promotion energy.
Fetched live from OpenAlex and de-inverted. Abstracts are not stored in this database: the inverted indexes are 8.6 GB of the frame’s 9.3 GB of text, and the host has 13 GB free.
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 | 0.001 | 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 | 0.001 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.000 | 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