Synthesis, characterization and hydrolytic stability of diorganotin(IV)bis(<i>O</i>-alkyl alkylphosphonate)s
Why this work is in the frame
A frame that forgets how it found something cannot be audited. These are the routes that admitted this work.
Bibliographic record
Abstract
Diorganotinbis(O-alkyl alkylphosphonate)s, R 2 Sn(O 2 P(OR 1 )R 1 ) 2 [R 1 = Me, R = Me (1), Et (2), n-Bu (3); R 1 = Et, R = Me (4), Et (5), n-Bu (6)] have been synthesized from the reaction between dimethyl/diethyl/di-n-butyltin dichloride and dialkyl alkylphosphonates, (R 1 O) 2 P(O)R 1 , in a solvent-free medium (120 °C, 18 h). X-ray crystal structure of 1 reveals two independent molecules in the unit cell that form one-dimensional polymeric motifs by virtue of bridging bidentate phosphonate groups. The structural attribute of each polymeric chain represents an orderly infinite array of -[Sn-O-P-O-] 2 8-membered puckered cyclic rings with hexa-coordinated tin atoms. The structure of 2 resembles that of 1 and exhibits nearly identical structural parameters. The presence of C–H···O hydrogen bonding interactions involving P-OMe and (or) phosphonate (P=O) groups in both 1 and 2 afford the formation of two- and three-dimensional structural motifs, respectively. The phase purity and structural integrity of the bulk sample of 1 upon exposure to water has been ascertained by powder X-ray diffraction (XRD) and scanning electron microscopy (SEM). All the compounds reported herein have been characterized by IR and multinuclear ( 1 H, 13 C, 31 P, 119 Sn) NMR spectral studies.
Fetched live from OpenAlex and de-inverted. Abstracts are not stored in this database: the inverted indexes are 8.6 GB of the frame’s 9.3 GB of text, and the host has 13 GB free.
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) | 0.000 | 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) | 0.004 | 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 it