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Record W2097145005 · doi:10.1107/s1600536803023018

Aqua[<i>N,N</i>′,<i>N</i>′′,<i>N</i>′′′-tetrakis(2-hydroxyethyl)-1,4,7,10-tetrazacyclododecane-κ<sup>4</sup><i>N</i>]neodymium(III) tris(perchlorate) 1.25-hydrate

2003· article· en· W2097145005 on OpenAlexaff
Roxan U. Richards-Johnson, Ishenkumba A. Kahwa, Alan J. Lough

Bibliographic record

VenueActa Crystallographica Section E Structure Reports Online · 2003
Typearticle
Languageen
FieldMaterials Science
TopicLanthanide and Transition Metal Complexes
Canadian institutionsUniversity of Toronto
Fundersnot available
KeywordsChemistryNeodymiumPerchlorateHydrateProtonationSolventCrystal structureMedicinal chemistryLanthanideHydrogen bondNanoclustersCationic polymerizationTrisSupramolecular chemistryInorganic chemistryCrystallographyMoleculePolymer chemistryOrganic chemistryIon

Abstract

fetched live from OpenAlex

The asymmetric unit of the title structure, [Nd(C16H36N4O4)(H2O)](ClO4)3·1.25H2O, (I), contains two independent NdIII cations, six perchlorate anions and two and a half solvent water mol­ecules. Compound (I) is a product of a program exploring the formation of polynuclear metallo-nanoclusters from oligomerization of aziridineethanol in the presence of lanthanide(III) salts. Under moderately acidic or basic solutions protonation of alcoholic sites is maintained and no oligomerization via bridging alcoholic sites is found. The crystal structure contains a three-dimensional network of O—H⋯O hydrogen bonds.

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 machine prediction

Teacher imitation

Not calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.

metaresearch head score (Codex)0.000
metaresearch head score (Gemma)0.000
Version: metacan-v3-hybrid-931329e0061cValidation 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 score0.004
Threshold uncertainty score0.015

Distilled classifier scores by category (both heads)

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 science0.0010.000
Research integrity0.0000.000
Insufficient payload (model declined to judge)0.0040.001

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 head0.011
GPT teacher head0.238
Teacher spread0.226 · 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 source (direct Gemma or distilled Codex), 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

Citations1
Published2003
Admission routes1
Has abstractyes

Explore more

Same venueActa Crystallographica Section E Structure Reports OnlineSame topicLanthanide and Transition Metal ComplexesFrench-language works237,207