A novel unexpected two-dimensional layer-like luminescent dysprosium coordination polymer [Dy<sub>2</sub>(phth)<sub>3</sub>H<sub>2</sub>O]<i><sub>n</sub></i> by hydrothermal synthesis
Bibliographic record
Abstract
Assembling potassium acid phthalate (KHphth) and dysprosium nitrate, a novel luminescent two-dimensional layer-like dysprosium coordination polymer with the formula [Dy 2 (phth) 3 H 2 O] n has been synthesized by a hydrothermal process. It is unexpected that the complex exhibits a new coordination mode with phthalate and an asymmetrical structure for the two dysprosium fragments in the molecular unit. The title coordination polymer crystallizes in the mono clinic system, space group P2 1 /c, with lattice parameters a = 7.913(2) Å, b = 26.360(7) Å, c = 11.563(3) Å, β = 106.864(3)°, V = 2308.3(11) Å 3 , D c = 2.404 Mg/m 3 , Z = 4, F(000) = 1576, GOF = 1.079, R 1 = 0.0282. The luminescence spectrum shows that the blue emission intensity of the 4 F 9/2 → 6 H 15/2 transition is stronger than the yellow emission intensity of the 4 F 9/2 → 6 H 13/2 transition. Key words: dysprosium (III), two-dimensional layer-like coordination polymer, molecular structure, luminescence, hydrothermal synthesis.
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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) | 0.001 | 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 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".