Vibronic luminescence properties of tetragonal transition metal complexes
Bibliographic record
Abstract
The luminescence properties of trans-dioxo rhenium(V) and osmium(VI) [d2] and square-planar platinum(II) and palladium(II) [d8] transition metal complexes have been studied as a function of temperature and pressure. Both types of complexes studied have idealized D4h point group symmetry with the d2 systems representing the tetragonally compressed limit of a six-coordinate complex in the D4h point group and the d8 systems representing the tetragonally elongated limit. The observed luminescence in both classes of complexes has been assigned as a metal-centered (d → d) 3Eg → 1A1g transition. The application of external pressure provides a means to induce minor changes in the molecular geometries of these model systems that reveal the delicate interplay between structural and electronic properties. Pressure-dependent spectroscopic data are analyzed quantitatively using theoretical models adapted from high-resolution low-temperature spectra where emitting state displacements along vibrational coordinates are determined from resolved vibronic structure. These combined experimental and theoretical techniques allow for a full characterization of the ground and emitting state potential energy surfaces and their explicit dependence on structural parameters.
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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 | 0.001 |
| 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".