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Issue 4, 2014
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Mechanochemical solid state anion-exchange of lead(II) coordination polymers via an intermediate coordination polymer; new precursors for the preparation of PbBr2/Pb3O2Br2, PbBr(OH) and PbO nanoparticles

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Abstract

The reversible crystal-to-crystal transformations of a 1D lead(II) coordination polymer with the ligand 2,5-bis(4-pyridyl)-3,4-diaza-2,4-hexadiene (4-bpdh), from [Pb(4-bpdh)Br2]n (1) to intermediate [Pb(4-bpdh)(Br)(NO3)]n (2) and [Pb(4-bpdh)(NO3)2(H2O)]n (3) by a solid state anion-replacement processes under mechanochemical reactions, have been studied. The reversible solid state structural transformation of compound 1 to compound 2 and then 3 by anion replacement have been verified by PXRD and IR measurements. PbBr2, PbBr(OH), Pb3O2Br2 and PbO nanoparticles were obtained by the thermal decomposition of compounds 1, 2 and 3 in oleic acid at 180 °C in an air atmosphere, respectively. These nanoparticles were characterized by powder X-ray diffraction (PXRD) and scanning electron microscopy (SEM).

Graphical abstract: Mechanochemical solid state anion-exchange of lead(ii) coordination polymers via an intermediate coordination polymer; new precursors for the preparation of PbBr2/Pb3O2Br2, PbBr(OH) and PbO nanoparticles

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Publication details

The article was received on 09 Jun 2013, accepted on 22 Oct 2013 and first published on 23 Oct 2013


Article type: Communication
DOI: 10.1039/C3DT51533H
Citation: Dalton Trans., 2014,43, 1489-1492
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    Mechanochemical solid state anion-exchange of lead(II) coordination polymers via an intermediate coordination polymer; new precursors for the preparation of PbBr2/Pb3O2Br2, PbBr(OH) and PbO nanoparticles

    L. Hashemi, A. Morsali and S. W. Joo, Dalton Trans., 2014, 43, 1489
    DOI: 10.1039/C3DT51533H

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