Open Access Article
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Expression of concern: Copper nanoparticle anchored biguanidine-modified Zr-UiO-66 MOFs: a competent heterogeneous and reusable nanocatalyst in Buchwald–Hartwig and Ullmann type coupling reactions
Hojat Veisi*a,
Narges Neyestania,
Mozhgan Pirhayatib,
Sheida Ahany Kamangara,
Shahram Lotfia,
Taiebeh Tamoradi*c and
Bikash Karmakar*d
aDepartment of Chemistry, Payame Noor University (PNU), Tehran, Iran. E-mail: hojatveisi@yahoo.com
bDepartment of Applied Chemistry, Faculty of Science, Malayer University, Malayer, Iran
cChemistry Department, Production Technology Research Institute-ACECR, Ahvaz, Iran. E-mail: t.tabss@yahoo.com
dDepartment of Chemistry, Gobardanga Hindu College, 24-Parganas (North), India. E-mail: bkarmakar@ghcollege.ac.in
First published on 27th September 2024
Abstract
Expression of concern for ‘Copper nanoparticle anchored biguanidine-modified Zr-UiO-66 MOFs: a competent heterogeneous and reusable nanocatalyst in Buchwald–Hartwig and Ullmann type coupling reactions’ by Hojat Veisi et al., RSC Adv., 2021, 11, 22278–22286, https://doi.org/10.1039/D1RA02634H.
RSC Advances is publishing this expression of concern in order to alert readers that concerns have been raised over the integrity of the data published in this article. The authors have been contacted but have not responded to requests to provide raw data. An expression of concern will continue to be associated with the article until a conclusive outcome is reached.
Laura Fisher
16th September 2024
Executive Editor, RSC Advances
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