Synthesis, Characterization, and Theoretical Analysis of Soluble Poly(oxothiazenes): The Ambient Temperature Lewis Acid Catalyzed <i>in Situ</i> Polymerization of <i>N</i>-Silylsulfonimidoyl Chlorides
Why this work is in the frame
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Bibliographic record
Abstract
The ambient temperature condensation, to yield low molecular weight poly(methyloxothiazene) ( M w = 1 × 10 4; PDI = 1.4), can be achieved by the reaction of MeS(O 2 )NHSiMe 3 and SOCl 2 —this latter reaction being performed in an attempt to isolate ClSMe(O)NSiMe 3 ( 6a ). The in situ addition of a Lewis acid initiator (e.g., PCl 5 ) to freshly prepared samples of N -silylsulfonimidoyl chlorides (ClSR(O)NSiMe 3, 6a – d, R = Me, Et, Ph, p -C 6 H 4 Me) yielded high molecular weight, narrowly dispersed polymers, 5a – d ( M w = 6.7 × 10 4 –3.3 × 10 6; PDI = 1.2–1.6) of general formula [RS(O)═N] n . These materials have been characterized by GPC, NMR ( 1 H, 13 C) spectroscopy, and DSC. UV–vis spectroscopy of CH 2 Cl 2 solutions of 5a – d reveal a high-energy π–π* transition (λ max = 300–350 nm) that tails into the visible. Additionally, theoretical modeling of oligomeric (methyloxothiazenes) at either a semiempirical, Hartree–Fock, or DFT level of theory suggests that these polymers adopt an irregular helical architecture.
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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 | 0.001 |
| 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 it