NHC‐Stabilized Mixed Group 13/14/15 Element Hydrides
Bibliographic record
Abstract
Abstract The syntheses of novel N‐heterocyclic carbene (NHC) adducts of group 13, 14 and 15 element hydrides are reported. Salt metathesis reactions between NaPH2 and IDipp ⋅ GeH2BH2OTf (1) (IDipp=1,3‐bis(2,6‐diisopropylphenyl)imidazol‐2‐ylidene) led to mixtures of the two isomers IDipp ⋅ GeH2BH2PH2 (2 a) and IDipp ⋅ BH2GeH2PH2 (2 b); by altering the reaction conditions an almost exclusive formation of 2 b was achieved. Attempts to purify mixtures of 2 a and 2 b by re‐crystallization from THF afforded a salt [IDipp ⋅ GeH2BH2 ⋅ IDipp][PHGeH2BH2PH2BH2GeH2] (4) that contains the novel anionic cyclohexyl‐like inorganic heterocycle [PHGeH2BH2PH2BH2GeH2]−. In addition, the borane adducts IDipp ⋅ GeH2BH2PH2BH3 (3 a) and IDipp ⋅ BH2GeH2PH2BH3 (3 b) as even longer chain compounds were obtained from reactions of 2 a/2 b with H3B ⋅ SMe2 and were studied by NMR spectroscopy. Accompanying DFT computations give insight into the mechanism and energetics associated with 2 a/2 b isomerization as well as their decomposition pathways.
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How this classification was reachedexpand
Full frame machine prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.
Distilled classifier scores by category (both heads)
| 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) | 0.002 | 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 source (direct Gemma or distilled Codex), 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".