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Visualization of electronic and vibrational polarizabilities and hyperpolarizabilities

2000· article· en· W1999391615 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

VenueInternational Journal of Quantum Chemistry · 2000
Typearticle
Languageen
FieldMaterials Science
TopicNonlinear Optical Materials Research
Canadian institutionsUniversity of Ottawa
FundersNatural Sciences and Engineering Research Council of Canada
KeywordsHyperpolarizabilityPolarizabilityChemistrySimilarity (geometry)Computational chemistryElectronic structureNonlinear opticalMoleculeMolecular physicsQuantum mechanicsNonlinear systemPhysicsComputer scienceOrganic chemistryImage (mathematics)

Abstract

fetched live from OpenAlex

At the molecular level of any observed nonlinear optical behavior, one finds the polarizability and hyperpolarizability tensors. These quantities are nowadays easily calculated for small- to intermediate-sized molecules. However, to gain further insight into these properties, pictorial approaches are valuable. Here we extend the work of Chopra et al. [J. Phys. Chem., 93, 7120 (1989)] to obtain a method that may be used in order to understand how average (hyper)polarizabilities are distributed over the molecular frame. The pictures obtained represent (hyper)polarizability moments and give a description of local contributions to the total electric property. Furthermore, the formal foundations of the proposed method are developed to be used to represent both the electronic and the vibrational components of the (hyper)polarizabilities. The theory is applied to a series of push–pull polyenes. One important conclusion is the lack of any similarity between the electronic and vibrational pictorializations of either the polarizability or the first hyperpolarizability. © 2000 John Wiley & Sons, Inc. Int J Quant Chem 78: 348–377, 2000

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 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 score0.006
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 head0.009
GPT teacher head0.288
Teacher spread0.278 · 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