Anionic Cyclopentadienyl C<sub>60</sub> Complexes of Molybdenum and Tungsten; The Strange Case of Iron
Bibliographic record
Abstract
Abstract Thermal and photochemical reactions of the carbonylate salts A[(η 5 ‐C 5 H 5 )Fe(CO) 2 ], A[(η 5 ‐C 5 H 5 )Mo(CO) 3 ] and A[(η 5 ‐C 5 H 5 )W(CO) 3 ] (A = Na, PPN) in THF with C 60 result in all cases in electron transfer to give [C 60 ] − and the transient 17‐electron, metal‐centered radicals CpFe(CO) 2 , CpMo(CO) 3 and CpW(CO) 3 , respectively. Subsequent self‐coupling of the three metal‐centred radicals then results in the formation of the metal‐metal bonded dimers [CpFe(CO) 2 ] 2 , [CpMo(CO) 3 ] 2 and [CpW(CO) 3 ] 2 . In contrast, while the mixture of Na[C 60 ] and [CpFe(CO) 2 ] 2 does not react further under photochemical conditions, photolysis of mixtures of Na[C 60 ] and both [CpMo(CO) 3 ] 2 and [CpW(CO) 3 ] 2 ultimately results in complete homolysis of the dimers and regeneration of the corresponding metal‐centered radicals, which then combine with the [C 60 ] − remaining in solution to form the η 2 ‐C 60 complexes A[CpMo(CO) 2 (η 2 ‐C 60 ] and A[CpW(CO) 2 (η 2 ‐C 60 ]. (© Wiley‐VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 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 | 0.000 | 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 | 0.001 | 0.000 |
| 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".