Evidence map›Paper›PMID 29784991›Full record

ArticleNature chemistry2018

A new fundamental type of conformational isomerism.

Peter J Canfield, Iain M Blake, Zheng-Li Cai, Ian J Luck, Elmars Krausz, Rika Kobayashi, Jeffrey R Reimers, Maxwell J Crossley

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In one paragraph

Article in Nature chemistry, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. An erratum has been issued. Cited by 26 papers.

0numbers the graph read from it
0cells of the map it votes in
26citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

26 citing papers in PubMed.

  1. Post-Modification of Tripyrenylenes to Enantiopure π-Extended DChemistry (Weinheim an der Bergstrasse, Germany) · 2026
    Article
  2. Article
  3. Interconversion Mechanisms in HThe journal of physical chemistry. A · 2026
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  5. Review
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  10. Dynamic processes of the first NHC-substituted rhenium heptahydrides [ReHDalton transactions (Cambridge, England : 2003) · 2025
    Article
  11. Article
  12. Article
  13. Review
  14. Article
  15. The Final Stereogenic Unit of [2]Rotaxanes: Type 2 Geometric Isomers.Journal of the American Chemical Society · 2024
    Article
  16. Article
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4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

8 authors.

Peter J CanfieldInternational Centre for Quantum and Molecular Structures and School of Physics, Shanghai University, Shanghai, China.ORCID http://orcid.org/0000-0002-4974-0638
Iain M BlakeSchool of Chemistry, The University of Sydney, Sydney, New South Wales, Australia.
Zheng-Li CaiSchool of Chemistry, The University of Sydney, Sydney, New South Wales, Australia.
Ian J LuckSchool of Chemistry, The University of Sydney, Sydney, New South Wales, Australia.
Elmars KrauszResearch School of Chemistry, Australian National University, Canberra, Australian Capital Territory, Australia.
Rika KobayashiInternational Centre for Quantum and Molecular Structures and School of Physics, Shanghai University, Shanghai, China.ORCID http://orcid.org/0000-0002-0672-833X
Jeffrey R ReimersInternational Centre for Quantum and Molecular Structures and School of Physics, Shanghai University, Shanghai, China. jeffrey.reimers@uts.edu.au.ORCID http://orcid.org/0000-0001-5157-7422
Maxwell J CrossleySchool of Chemistry, The University of Sydney, Sydney, New South Wales, Australia. maxwell.crossley@sydney.edu.au.ORCID http://orcid.org/0000-0001-9851-033X

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Isomerism is a fundamental chemical concept, reflecting the fact that the arrangement of atoms in a molecular entity has a profound influence on its chemical and physical properties. Here we describe a previously unclassified fundamental form of conformational isomerism through four resolved stereoisomers of a transoid (BF)O(BF)-quinoxalinoporphyrin. These comprise two pairs of enantiomers that manifest structural relationships not describable within existing IUPAC nomenclature and terminology. They undergo thermal diastereomeric interconversion over a barrier of 104 ± 2 kJ mol

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.