Monomeric Alkali Metal (Li, Na, K) Complexes of Bis(iminophosphorano)methanides
Bibliographic record
Abstract
The reaction of the bis(iminophosphorano)methane, CH 2 (Cy 2 P NSMe 3 ) 2 ( 1 ), with methyllithium (even with excess of the latter) gave the monomeric methanide complex [Li{HC(Cy 2 P NSiMe 3 ) 2 - κ C, κ N, κ N ‘ }(OEt 2 )] ( 2 ) in a good yield. The reaction of H 2 C(Ph 2 P NSiMe 3 ) 2 ( 2 ) with equimolar equivalents of NaH or KH in THF solvent yielded monomeric [M{HC(Ph 2 P NSiMe 3 ) 2 - κ N, κ N ‘ }(THF) 2 ] (M = Na, 4; K, 5 ) with evolution of hydrogen gas. The crystal structures of each complex show the development of a unique coordination sphere around each alkali metal. In the lithium complex, 3, the central carbon atom of the ligand is bound to the metal, but such interaction does not occur in the case of either the Na, 4, or the K, 5, complexes. However in the potassium complex, one of the phenyl rings of the ligand is π-coordinated to the metal.
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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 | 0.000 |
| Meta-epidemiology (narrow) | 0.001 | 0.001 |
| Meta-epidemiology (broad) | 0.001 | 0.001 |
| Bibliometrics | 0.000 | 0.002 |
| 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) | 0.118 | 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".