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Record W2086014497 · doi:10.1002/qua.998

Bond orders in heteroaromatic rings*

2002· article· en· W2086014497 on OpenAlexafffund
Robert J. Doerksen, Ajit J. Thakkar

Bibliographic record

VenueInternational Journal of Quantum Chemistry · 2002
Typearticle
Languageen
FieldChemistry
TopicCrystallography and molecular interactions
Canadian institutionsUniversity of New Brunswick
FundersNatural Sciences and Engineering Research Council of Canada
KeywordsChemistryBorazineBond orderPyrroleComputational chemistryThiopheneRing (chemistry)Single bondFuranMoleculeBond lengthAb initioBenzeneTriple bondDouble bondOrganic chemistryGroup (periodic table)

Abstract

fetched live from OpenAlex

Abstract Bond orders are calculated at the Hartree–Fock and second‐order, Møller–Plesset (MP2) level for 324 distinct ring bonds in 60 heterocyclic molecules. These include benzene and 12 azines, pyrrole and 9 azoles, furan and 9 oxazoles, thiophene and 8 thiazoles, boroxine, trioxadiborole, borazine and 9 azaborinines, 3 azaboroles, and 3 oxazaboroles. The correlated bond orders are generally, but not always, smaller than their Hartree–Fock counterparts. Gordy bond orders differ from the ab initio ones by large amounts. A plot of MP2 bond orders versus bond lengths shows clearly that an empirical Gordy‐type relationship cannot be very accurate. Some trends in bond orders are identified. © 2002 John Wiley & Sons, Inc. Int J Quantum Chem, 2002

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 categoriesInsufficient payload (model declined to judge)
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 score0.093
Threshold uncertainty score0.998

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)0.0030.000

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 head0.014
GPT teacher head0.252
Teacher spread0.237 · 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.

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

Citations23
Published2002
Admission routes2
Has abstractyes

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