Synthesis and X‐ray Structure of <i>n</i>‐Propylimidodiphosphonic Anhydride, a New Precursor for the Hydrothermal or Solvothermal Synthesis of Zinc Phosphates
Bibliographic record
Abstract
Abstract n ‐Propylimidodiphosphonic anhydride [O(OH)P( μ ‐O)PO(OH)( μ ‐N n Pr)] 2 ·2NH 2 n Pr ( 1 ) is prepared by hydrolysis of trichloro‐ n ‐propylimidophosphorane with three equivalents of water. X‐ray analysis shows that 1 forms an eight‐membered P 4 N 2 O 2 ring in a chair conformation. These heterocycles are linked via extensive hydrogen‐bonding to form a three‐dimensional network. Hydrothermal reactions of 1 with zinc chloride give rise to P‐N bond cleavage and the formation of the hydrated zinc phosphates, {Zn 3 (PO 4 ) 2 ·H 2 O} n and {Zn 3 (PO 4 ) 2 ·4H 2 O} n , whereas the solvothermal reaction in isopropyl alcohol produces the anionic network [ZnCl(HPO 4 ) − ] n with [ n PrNH 3 ] + counter‐ions.
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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 | 0.001 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.001 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.001 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.005 | 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".