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Record W2332080811 · doi:10.1021/cs400986v

Iridium- and Platinum-Free Ring Opening of Indan

2013· article· en· W2332080811 on OpenAlexafffund
Jing Shen, Natalia Semagina

Bibliographic record

VenueACS Catalysis · 2013
Typearticle
Languageen
FieldBiochemistry, Genetics and Molecular Biology
TopicChemical Synthesis and Analysis
Canadian institutionsUniversity of Alberta
FundersUniversity of Alberta
KeywordsPlatinumIridiumRing (chemistry)CatalysisChemistryCombinatorial chemistryOrganic chemistry

Abstract

fetched live from OpenAlex

A 3- and 2-fold increase in selectivities toward 2-ethyltoluene and n -propylbenzene, respectively, in indan ring opening (RO) was achieved by introducing palladium to the ruthenium catalyst. The product selectivities for the Ru–Pd system with the 4:1 molar ratio were the same as those for monometallic iridium, known for its outstanding single cleavage selectivity; the lights formation was suppressed as compared with the monometallic platinum catalyst. A further increase in the Pd amount did not result in the selectivity improvement and brought down the activity to the low level of Pd. The bimetallic catalysts were synthesized in the presence of poly-(vinylpyrrolidone). The bimetallic systems revealed sintering resistance up to 400 °C, as compared with their monoforms. The indan RO activity was maximized after precalcination at 200 °C. The suggested nanoparticles’ bimetallicity was consistent with the results of CO-TPD, CO–DRIFTS, thermal stability tests, and a chemical probe reaction (olefin hydrogenation, in which only Pd is active). The Pd–Ru system is envisioned as a viable alternative to monometallic Ir for RO.

Fetched live from OpenAlex and de-inverted. Abstracts are not stored in this database: the inverted indexes are 8.6 GB of the frame’s 9.3 GB of text, and the host has 13 GB free.

How this classification was reachedexpand

Full frame distilled prediction

Teacher imitation

Not 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.

metaresearch head score (Codex)0.000
metaresearch head score (Gemma)0.000
Version: codex-gemma-dda1882f352aValidation status: machine_predicted_unvalidated
Candidate categoriesnone
Consensus categoriesnone
DomainCandidate signal: none · Consensus signal: none
Study designCandidate signal: Bench or experimental · Consensus signal: Bench or experimental
GenreCandidate signal: Empirical · Consensus signal: Empirical
Teacher disagreement score0.012
Threshold uncertainty score0.330

Codex and Gemma teacher scores by category

CategoryCodexGemma
Metaresearch0.0000.000
Meta-epidemiology (narrow)0.0000.000
Meta-epidemiology (broad)0.0000.000
Bibliometrics0.0000.000
Science and technology studies0.0000.000
Scholarly communication0.0000.000
Open science0.0000.000
Research integrity0.0000.000
Insufficient payload (model declined to judge)0.0000.000

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.

Opus teacher head0.006
GPT teacher head0.205
Teacher spread0.200 · how far apart the two teachers sit on this one work
Validation statusscore_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from it

Classification

machine, unvalidated

Machine predicted; a candidate call from one teacher head, not a consensus.

The models applied no category: nothing in the taxonomy fit this work.
Study designBench or experimental
Domainnot available
GenreEmpirical

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".

Quick stats

Citations24
Published2013
Admission routes2
Has abstractyes

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