Crystal Structure and Fluorescence Character of Copper Complex Containing N,N′-Salicylidene pyridine formylhydrazide
Bibliographic record
Abstract
The title complex \[Cu 2(sphz)(DMF) 3H 2O\]·(ClO 4) 2(C 22H 32Cl 2Cu 2N 6O 14), where H 2sphz is N,N′-salicylidene pyridine formylhydrazide, has been synthesized from H 2sphz and copper perchlorate in a mixture of DMF and methanol. Crystal data of the complex were found:space group P2 1/c, a= 1.081 20(3) nm, b=2.571 87(7) nm, c=1.177 7(3) nm, β=104.147 2(5)°, V=3.175 7(2) nm 3, Z=4, D c=1.679 Mg/m 3, F(000)=1 640, μ(Mo Kα)=1.582 mm -1, R=0.035 8 for 5 234 observed reflections(I≥2σ(I)), R w=0.100 7, GOF=1.076. One copper(Ⅱ) ion in complex is coordinated with a pyridine nitrogen atom, a diazine nitrogen atom, two DMF oxygen atoms and a water oxygen atom, forming a distorted square pyramidal arrangement of N 2O 3. Another copper(Ⅱ) ion in complex is coordinated with a diazine nitrogen atom, a carbonyl oxygen atom, a phenoxy oxygen atom and a DMF oxygen atom, forming a distorted square arrangement of NO 3. Every two molecules in the crystal are linked in pairs through the intermolecular hydrogen bonding. ν(CO) and ν(CN) are shifted to lower frequencies in IR spectra; π-π * charge transitions and d-π * charge-transitions are observed in their electronic spectra. The emission lines( λ exc=310 nm) are shifted to higher frequencies in fluorescence spectra.
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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) | 0.001 | 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 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".