A novel palladium-EDTA coordination polymer (Pd-EDTA-CP) as an efficient heterogeneous catalyst for the Stille cross-coupling reaction

This study reports the synthesis of a novel palladium-based coordination polymer (Pd-EDTA-CP) through the reaction of Pd(II) acetate with EDTA as a chelating ligand. The catalyst was characterized using FT-IR, XRD, TGA-DTA, EDX, elemental mapping, FESEM, Nitrogen adsorption-desorption, and ICP-OES, confirming its crystalline structure, uniform morphology, well-distributed elements, high surface area, and thermal stability. Pd-EDTA-CP exhibited excellent catalytic performance in the Stille coupling of aryl halides with triphenyltin chloride, achieving up to 95% yield under mild conditions (DMSO, 110 °C, 2 h). Its heterogeneous nature allowed easy recovery by centrifugation and multiple reuses without significant loss of activity. Overall, Pd-EDTA-CP offers a sustainable and reusable platform for efficient carbon–carbon bond formation under mild and practical conditions.