Student or educator? Sign up with your school email and get 6 months of Pro free.
Cited by 258

The DOI matches its Crossref record; 1 of the 1 references it cites were found in a registry or an index.

Indeno[2,1‐a]fluorene: An Air‐Stable ortho‐Quinodimethane Derivative

Shimizu, Akihiro, Tobe, Yoshito·2011·Angewandte Chemie International Edition

Abstract

A new isomer: 11,12-Dimesitylindeno[2,1-a]fluorene was synthesized and isolated in crystal form. The indenofluorene exhibits significant bond-length alternation in the o-quinodimethane structure, limited singlet biradical character, and weakly antiaromatic character. Optical and electrochemical properties suggest that indeno[2,1-a]fluorene derivatives may be candidates for optoelectronic materials.

Overview

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Integrity signals

Registry

Crossref · 10.1002/anie.201101950

Cites

1 of 1 references verified0 citation errors · 0 not checkable

Statistics

Verification

Claims the paper makes

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Self-check

Percentages, sums and reported differences re-computed from the paper’s own numbers.

The self-check needs the paper’s full text.

Citations

Cites

Show all 1 references

Cited by

See all 258

Metadata

Authors
Shimizu, A., & Tobe, Y.
Venue
Angewandte Chemie International Edition
Publisher
Wiley
Published
2011-06-15
Volume
50
Issue
30
Pages
6906-6910
ISSN
  • 1433-7851 (ISSN-L)
  • 1521-3773
OpenAlex
W2118011826
Cited by
258
References
1
FWCI
8.83
Type
journal article
Language
en
Open access
closed

About these checks

Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.

Statistics and arithmetic are recomputed, not judged.

Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.

What counts as a claim ›How we measure confidence ›How we check this ›

Are you an author, or do you see a problem with this page? Request a review

How to cite

Cite CoChat for the checks on this page, and the paper for its own findings.

This page
CoChat. (2026). Citation check: Indeno[2,1‐a]fluorene: An Air‐Stable ortho‐Quinodimethane Derivative. https://app.cochat.ai/papers/10.1002/anie.201101950
The paper
Shimizu, A., & Tobe, Y. (2011). Indeno[2,1‐a]fluorene: An Air‐Stable ortho‐Quinodimethane Derivative. Angewandte Chemie International Edition. https://doi.org/10.1002/anie.201101950

Data sources

Bibliographic data: Semantic Scholar, OpenAlex, Crossref.

Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).

Semantic Scholar’s data is described in: Kinney, R., et al. (2023). The Semantic Scholar Open Data Platform. arXiv:2301.10140.