Synthesis, structures, and multinuclear NMR spectra of tin(II) and lead(II) complexes of tellurium-containing imidodiphosphinate ligands: Preparation of two morphologies of phase-pure PbTe from a single-source precursor

Jamie S. Ritch, Tristram Chivers, Kibriya Ahmad, Mohammad Afzaal, Paul O'Brien

    Research output: Contribution to journalArticlepeer-review

    Abstract

    Group 14 metal complexes of heavy chalcogen-centered anions, M[(TeP iPr2)2N]2 (5, M = Sn; 6, M = Pb) and M(TePiPr2NPiPr2Se)2 (7, M = Sn; 8, M = Pb), were synthesized in 64-89% yields by metathesis of alkali-metal salts of the ligands with group 14 metal dihalides. Crystallography characterization of the complexes revealed that 5, 6, and 8 engage in metal ⋯ chalcogen secondary bonds to generate dimers, whereas 7 is monomeric in the solid state. Multinuclear (1H,31P, 77Se, and 125Te) solution NMR data for these homoleptic complexes evinced dynamic behavior leading to the equivalence of the two ligand environments. The Pb complex 6 was utilized as a single-source precursor to micrometer-scale lead telluride particles via two divergent techniques: aerosol-assisted chemical vapor deposition of the complex in THF/CH2CI2 solution onto glass substrates yielded rectangular prisms, while solution injection of 6 in tri-n-octylphosphine onto Si/SiO2(100) substrates heated to 200-220 °C resulted in the formation of wires. PXRD and EDX analysis of the products confirmed the phase purity of the PbTe materials. © 2009 American Chemical Society.
    Original languageEnglish
    Pages (from-to)1198-1205
    Number of pages7
    JournalInorganic Chemistry: including bioinorganic chemistry
    Volume49
    Issue number3
    DOIs
    Publication statusPublished - 1 Feb 2010

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