Organometallic Complexes of Benzannelated Phospholyls: Synthesis and Characterization of Benzophospholyl and the First <i>i</i><i>so</i>-Benzophospholyl Metal Complexes
Bibliographic record
Abstract
A large-scale synthesis of the benzophospholyl (BP) ligand, 4, has been developed and employed in the synthesis of a series of manganese and iron complexes. Reaction between Li-BP and FeCp(CO) 2 X (X = Br, I) resulted in the formation of [(μ 2 -BP)Fe 2 Cp 2 (CO) 4 ]X, while reaction of bis(1,1‘-benzophospholyl) with [FeCp(CO) 2 ] 2 gave a mixture of isomers of (μ 2 -BP) 2 Fe 2 Cp 2 (CO) 2 . The phosphine adduct (BP-Ph)Mn 2 (CO) 9 was obtained from BP-Ph and Mn 2 (CO) 10 and converted to (η 5 -BP)Mn(CO) 3 upon reaction with organometallic or organic radicals. A synthesis for phenyl- iso -benzophosphole (iBP-Ph) has been explored. The compound is highly reactive and polymerizes instantaneously and irreversibly. Polymerization of the iBP precursor was avoided in the novel partially hydrogenated derivative iBP-H 2 -Ph. Manganese complexes of iBP, 5, were obtained by reaction of iBP-H 2 -Ph with Mn 2 (CO) 10, resulting in the formation of (η 5 -iBP-H 2 )Mn(CO) 3 . Reaction of (η 5 -iBP-H 2 )Mn(CO) 3 with DDQ gave (η 5 -iBP)Mn(CO) 3, the first metal complex of iBP.
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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) | 0.001 | 0.001 |
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".