β-Functionalized ethylchalcogenolate complexes of lead(II): Synthesis, structures and their conversion into lead chalcogenide nanoparticles

The reactions of Pb(OAc)2·3H2O with NaER yield homoleptic colorless to yellow complexes of composition, [Pb(ER)2] (ER = SCH2CH2NMe2 (1), SeCH2CH2NMe2 (2) and SeCH2CH2COOMe (3)). These complexes were characterized by elemental analyses, UV–Vis and 1H NMR data. Molecular structures of [Pb(ECH2CH2NMe2)2] (E = S or Se) have been established by single crystal X-ray diffraction analyses. These molecules have a distorted trigonal bipyramidal configuration around lead with the nitrogen atoms of the chelating chalcogenolate ligands occupying the axial positions. Thermal behavior of these complexes was studied by TG analysis. Pyrolysis in a furnace or in HDA (hexadecylamine) gave PbE nanoparticles which were characterized by UV–Vis, photoluminescence, XRD, EDAX, and TEM measurements.

Complexes of the general formula [Pb(ER)2] (ER = SCH2CH2NMe2, SeCH2CH2NMe2, SeCH2CH2COOMe) have been isolated and characterized by elemental analyses, UV–Vis and 1H NMR data. Structures of [Pb(ECH2CH2NMe2)2] (E = S or Se) have been established by single crystal X-ray analyses. Pyrolysis of these complexes in a furnace or in HDA (hexadecylamine) afforded PbE nanoparticles which were characterized by various techniques.Figure optionsDownload as PowerPoint slide