Palladium(II)-1-phenylthio-2-arylchalcogenoethane complexes: palladium phosphide nano-peanut and ribbon formation controlled by chalcogen and Suzuki coupling activation

Dalton Transactions : an International Journal of Inorganic Chemistry
Gyandshwar Kumar RaoAjai Kumar Singh

Abstract

The ligands PhSCH2CH2EAr (; E = S, Se or Te) and their Pd-complexes [PdLCl2] () have been synthesized and authenticated with their (1)H, (13)C{(1)H}, (77)Se{(1)H} and (125)Te{(1)H} NMR spectra. Single crystal structures of and reveal the geometry of donor atoms around palladium as nearly square planar. Thermolysis of all three complexes in trioctylphosphine (TOP) at 350, 320 and 280 °C, respectively, results in a single phase of crystalline PdP2. The morphology of the phase varies with 'E' to some extent. The nanopeanuts (size ∼30 and ∼35 nm) were formed with and as precursor complexes. On using complex as a precursor nanoribbons are formed. The preferential growth in the (202) plane in the case of all the three precursor complexes has been rationalized in terms of texture coefficient and average crystallite size. All three complexes and PdP2 NPs have been explored for Suzuki-Miyaura coupling of several aryl halides. Complexes and show good catalytic activity but complex does not. The activity appears to result due to in situ generated palladium containing nanoparticles (NPs) in the case of and . The formation of inactive large Pd aggregates in the case of appears to be responsible for the difference. The PdP2 NPs have been fou...Continue Reading

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Aug 22, 2012·Dalton Transactions : an International Journal of Inorganic Chemistry·Arun KumarAjai K Singh
Jan 24, 2013·Dalton Transactions : an International Journal of Inorganic Chemistry·Arun KumarAjai K Singh
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Sep 4, 2013·Chemical Communications : Chem Comm·Kamal Nayan SharmaAjai K Singh
Oct 5, 2013·Dalton Transactions : an International Journal of Inorganic Chemistry·Satyendra KumarAjai Kumar Singh

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Citations

Aug 18, 2020·Dalton Transactions : an International Journal of Inorganic Chemistry·Preeti OswalArun Kumar
May 7, 2021·Dalton Transactions : an International Journal of Inorganic Chemistry·Aayushi AroraArun Kumar
May 23, 2021·Scientific Reports·Shu FujitaTakato Mitsudome

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