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Record W2022715016 · doi:10.1107/s0108270100005527

Chains of fused rings in the hydrogen-bonded structure of<i>meso</i>-6,13-diamino-6,13-dimethyl-1,4,8,11-tetraazacyclotetradecane–2,2′-biphenol (1/2)

2000· article· en· W2022715016 on OpenAlexaff
Alan J. Lough, R.M. Gregson, George Ferguson, Christopher Glidewell

Bibliographic record

VenueActa Crystallographica Section C Crystal Structure Communications · 2000
Typearticle
Languageen
FieldChemistry
TopicSynthesis and Characterization of Heterocyclic Compounds
Canadian institutionsUniversity of GuelphMiller Group (Canada)University of Toronto
Fundersnot available
KeywordsIntramolecular forceHydrogen bondCrystallographyChemistryIonSalt (chemistry)HydrogenStereochemistryMoleculePhysical chemistryOrganic chemistry

Abstract

fetched live from OpenAlex

The title compound is a salt, [C12H32N6]2+·2[HOC6H4C6H4O]−. The centrosymmetric cation contains two intramolecular N—H⋯N hydrogen bonds with an N⋯N distance of 2.8290 (13) Å, and the pendent amino groups are in axial sites; the anion contains an intramolecular O—H⋯O hydrogen bond with an O⋯O distance of 2.4656 (11) Å. The ions are linked into continuous chains by means of four types of N—H⋯O hydrogen bonds with N⋯O distances ranging from 2.7238 (12) Å to 3.3091 (13) Å, associated with N—H⋯O angles in the range 148–160°.

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 categoriesMeta-epidemiology (narrow), Insufficient payload (model declined to judge)
Consensus categoriesnone
DomainCandidate signal: none · Consensus signal: none
Study designCandidate signal: Bench or experimental · Consensus signal: none
GenreCandidate signal: Empirical · Consensus signal: Empirical
Teacher disagreement score0.789
Threshold uncertainty score1.000

Codex and Gemma teacher scores by category

CategoryCodexGemma
Metaresearch0.0000.000
Meta-epidemiology (narrow)0.0010.001
Meta-epidemiology (broad)0.0010.000
Bibliometrics0.0010.002
Science and technology studies0.0010.001
Scholarly communication0.0000.000
Open science0.0030.000
Research integrity0.0010.001
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 head0.012
GPT teacher head0.231
Teacher spread0.219 · 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

Citations1
Published2000
Admission routes1
Has abstractyes

Explore more

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