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• W2055530578 endingPage "16939" @default.
• W2055530578 startingPage "16939" @default.
• W2055530578 abstract "The (E,N,E) pincer ligands (ArECH2CH2)2NH (L1/L2: Ar = Ph, E = S/Se; L3: Ar = CH3O-p-C6H4, E = Te) synthesized by reaction of PhS−/PhSe−/CH3O-p-C6H4Te− with bis(2-chloroethyl)amine react with Na2PdCl4 in aqueous ethanol, resulting in nearly square planar diamagnetic complexes [Pd(L)Cl]Cl (1–3), where L = L1–L3. All the ligands (L1–L3) and their complexes (1–3) have been characterised with 1H, 13C{1H}, 77Se{1H} and 125Te{1H} NMR spectra and high resolution mass spectrometry. The single crystal structures (determined with X-ray diffraction) of 2 and 3 have been solved (Pd–Se: 2.4104(5)/2.4222(6) Å; Pd–Te: 2.560(2)/2.588(2) Å). The conversions for Suzuki–Miyaura coupling (SMC) of various aryl bromides with phenylboronic and 4-formyl/acetyl phenylboronic acid in water using 2–3 mol% of each of the complexes 1–3 have been found good. Complexes 1 and 2 show better catalytic activity than 3, as higher yields were observed with them in a relatively short time. The coupling reactions appear to be catalyzed with Pd(0) nanoparticles (NPs) generated in situ in the course of reaction. The NPs have been isolated and HRTEM studies on them have revealed their size as ∼1–3 nm. The SEM-EDX indicates their protection with organochalcogen fragments. Addition of TBAB was essential in some cases to get good yield of cross coupled product. The isolated NPs show catalytic activity for SMC independently. The yields of cross coupled product were excellent when NPs were reused. The two phase test suggests a relatively low contribution of homogeneous Pd species in catalysis." @default.
• W2055530578 created "2016-06-24" @default.
• W2055530578 creator A5005433094 @default.
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• W2055530578 creator A5054156436 @default.
• W2055530578 date "2013-01-01" @default.
• W2055530578 modified "2023-10-16" @default.
• W2055530578 title "Palladium(ii)-(E,N,E) pincer ligand (E = S/Se/Te) complex catalyzed Suzuki coupling reactions in water via in situ generated palladium quantum dots" @default.
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• W2055530578 doi "https://doi.org/10.1039/c3dt51658j" @default.
• W2055530578 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/24091641" @default.
• W2055530578 hasPublicationYear "2013" @default.
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