Activation of Si−C or C−H Bonds in Tetramethylsilane: Evidence from Protonolysis of (Trimethylsilyl)methyl−Platinum Bonds
Bibliographic record
Abstract
Protonolysis of the (trimethylsilyl)methyl−platinum bonds in [Pt(CH 2 SiMe 3 ) 2 (NN)] (NN = 4,4‘-di- tert -butyl-2,2‘-bipyridine) and in [Pt(CH 2 SiMe 3 )(NNC)] (NNC = C 6 H 4 -2-CH N- trans -C 6 H 10 -2-N CHPh) is suggested to occur by protonation at platinum to give a 16-electron hydridoplatinum(IV) intermediate, followed by either rapid, concerted rearrangement to give a methyl(trimethylsilyl)platinum(IV) complex intermediate or reductive coupling to form tetramethylsilane (TMS). The direct characterization of (trimethylsilyl)platinum(IV) complex intermediates, such as [PtBrMe 2 (SiMe 3 )(NN)], proves that the α-migration of the trimethylsilyl group from carbon to a cationic platinum center is easy and suggests that Si−C bond activation by electrophilic platinum(II) complexes may be an alternative to C−H activation.
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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 | 0.001 | 0.002 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.001 | 0.000 |
| Bibliometrics | 0.001 | 0.003 |
| 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) | 0.020 | 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".