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

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.