Open Access Article
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Expression of concern: Picolylamine–Ni(II) complex attached on 1,3,5-triazine-immobilized silica-coated Fe3O4 core/shell magnetic nanoparticles as an environmentally friendly and recyclable catalyst for the one-pot synthesis of substituted pyridine derivatives
Sobhan Rezayatia,
Fatemeh Kalantaria and
Ali Ramazani*ab
aDepartment of Chemistry, Faculty of Science, University of Zanjan, Zanjan 45371-38791, Iran. E-mail: aliramazani@gmail.com; aliramazani@znu.ac.ir
bDepartment of Biotechnology, Research Institute of Modern Biological Techniques (RIMBT), University of Zanjan, Zanjan 45371-38791, Iran
First published on 7th March 2025
Abstract
Expression of concern for ʻPicolylamine–Ni(II) complex attached on 1,3,5-triazine-immobilized silica-coated Fe3O4 core/shell magnetic nanoparticles as an environmentally friendly and recyclable catalyst for the one-pot synthesis of substituted pyridine derivativesʼ by Sobhan Rezayati et al., RSC Adv., 2023, 13, 12869–12888, https://doi.org/10.1039/D3RA01826A.
The Royal Society of Chemistry is publishing this expression of concern in order to alert readers that concerns have been raised regarding the integrity of the XRD data in Fig. 5.
The Royal Society of Chemistry has asked the affiliated institution to investigate this matter and establish whether the data provided by the authors provide an accurate representation of the experiments that were conducted and to confirm the integrity and reliability of the data provided.
An expression of concern will continue to be associated with the article until we receive conclusive evidence regarding the reliability of the reported data.
Laura Fisher
28th February 2025
Executive Editor, RSC Advances
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