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 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) | 0.001 | 0.001 |
| Meta-epidemiology (broad) | 0.002 | 0.000 |
| Bibliometrics | 0.000 | 0.001 |
| Science and technology studies | 0.001 | 0.002 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.001 | 0.001 |
| Research integrity | 0.000 | 0.000 |
| 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".