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