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Record W2125484724 · doi:10.1063/1.1416175

Crystal orbital calculation of coupled Hartree–Fock dynamic (hyper)polarizabilities for prototype π-conjugated polymers

2001· article· en· W2125484724 on OpenAlex

Why this work is in the frame

A frame that forgets how it found something cannot be audited. These are the routes that admitted this work.

affAt least one author lists a Canadian institution in the pinned OpenAlex snapshot.
fundA Canadian funder is recorded on the work.

Bibliographic record

VenueThe Journal of Chemical Physics · 2001
Typearticle
Languageen
FieldChemistry
TopicSynthesis and Properties of Aromatic Compounds
Canadian institutionsUniversity of Ottawa
FundersNatural Sciences and Engineering Research Council of Canada
KeywordsPolarizabilityHartree–Fock methodBasis setAb initioPolyacetyleneBasis (linear algebra)CoulombChemistryMolecular physicsConjugated systemCrystal (programming language)Computational chemistryUnit (ring theory)PhysicsQuantum mechanicsPolymerDensity functional theoryMoleculeMathematicsOrganic chemistryComputer scienceElectron

Abstract

fetched live from OpenAlex

Ab initio static and dynamic (hyper)polarizability calculations at the time-dependent coupled-perturbed Hartree–Fock level have been carried out on polyyne, all-trans polyacetylene (PA), and trans-transoïd polymethineimine by a noniterative method. The dependence on basis set and on the number of neighboring unit cells exactly included has been investigated. The 6-31G basis set with nine neighboring unit cells, and long-range Coulomb interactions taken into account, was utilized in the final calculations. Although in many instances our results are the first that have been obtained we compare with oligomer calculations wherever possible. For PA the theoretical result is also compared with experiment and the main reasons for the existing discrepancy are addressed.

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.

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 score0.033
Threshold uncertainty score0.406

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 head0.015
GPT teacher head0.237
Teacher spread0.222 · 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