pH-Dependent Formation of Two Dihydrazinyltetrazine–Azobistetrazolate Salts with Different Thermal Stabilities and Energetic Performance
Bibliographic record
Abstract
Two new energetic salts were prepared through the combination of 3,6-dihydrazinyl-1,2,4,5-tetrazine dichloride ([H 2 DHT]Cl 2 ) and disodium 5,5′-azobis(tetrazolate) pentahydrate (Na 2 AZT·5H 2 O) in different pH conditions. Under acidic conditions, the 1:1 salt [H 2 DHT][AZT]·2H 2 O ( 2 ·2H 2 O) was isolated, while neutral pH gave access to the formation of the 2:1 salt ([HDHT] 2 [AZT]·4H 2 O; 3 ·4H 2 O). Both compounds were characterized by IR and NMR spectroscopy, thermal analysis (thermogravimetric analysis and differential scanning calorimetry), as well as single crystal and powder X-ray diffraction. Based on experimental data, compound 2 ·2H 2 O was found to be more thermally stable, with a decomposition temperature of T dec = 107 °C, compared to compound 3 ·4H 2 O ( T dec = 99 °C). Non-covalent interactions (hydrogen bonds and π–π interactions) were evaluated to better understand the structure–property relationships, revealing the effect of crystal packing on the overall energetic properties.
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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) | 0.000 | 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 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".