Bibliographic record
Abstract
The focus of this research has been the preparation of late transition metal phosphinimine complexes. The thesis herein describes the synthesis of a series of monomeric Group IX phosphinimine complexes. [RhCOD(o-C 6H4PPh2NR)] (R = 2,6-C6H3(CH 3)2 44, 2,6-C6H3 iPr2 45, 3,5-C6H3(CH 3)2 46 and Ph 47) were prepared via salt metathesis under mild conditions. The analogous complexes [Rh( o-C6H4PPh2NPh)(Ph2PCH 2CH2PPh2)] 52 and [IrCOD( o-C6H4PPh2NPh)] 53 were also readily prepared by similar methods. Reactivity studies were performed on these complexes. Unexpectedly, complexes 46, 47, 52 and 53 underwent oxidative addition of methylene chloride. However, when steric bulk was introduced on the 2,6-positions of the N-phenyl ring (compounds 44 and 45), oxidative addition of CH2Cl2 was not observed. The reaction of Group X transition metals with phosphinimine ligands was also explored. Attempts to coordinate [Li(o-C6H 4PPh2NR)]2·Et2O (R = SiMe 3 61 and tBu 62) to Group X transition metals proved to be unsuccessful due to steric congestion. However, transmetallation did occur when less bulky phosphinimine ligands were used, such as, [Li(o-C6H4PPh2NR)] 2·Et2O (R = Ph 63 and 3,5-C6H 3(CH3)2 66). The Group X phosphinimine complexes described herein, [Ni(o-C6H4PPh 2NR)2] (R = Ph 67 and 3,5-C6H 3(CH3)2 68) and [Pd(o-C 6H4PPh2NPh)2] 69, were bis-ligand type complexes.Dept. of Chemistry and Biochemistry. Paper copy at Leddy Library: Theses & Major Papers - Basement, West Bldg. / Call Number: Thesis2003 .C46. Source: Masters Abstracts International, Volume: 42-02, page: 0594. Adviser: D. W. Stephan. Thesis (M.Sc.)--University of Windsor (Canada), 2003.
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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 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.001 |
| Meta-epidemiology (broad) | 0.001 | 0.000 |
| Bibliometrics | 0.000 | 0.001 |
| Science and technology studies | 0.001 | 0.001 |
| Scholarly communication | 0.000 | 0.001 |
| Open science | 0.001 | 0.000 |
| Research integrity | 0.000 | 0.001 |
| Insufficient payload (model declined to judge) | 0.008 | 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".