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

Abstract

Group 14 metal complexes of heavy chalcogen-centered anions, M[(TeP(i)Pr(2))(2)N](2) (5, M = Sn; 6, M = Pb) and M(TeP(i)Pr(2)NP(i)Pr(2)Se)(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. Crystallographic 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 ((1)H, (31)P, (77)Se, and (125)Te) solution NMR data for these homoleptic complexes evinced dynamic behavior leading to the equivalence of the two ligand environments. The Pb(II) 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/CH(2)Cl(2) solution onto glass substrates yielded rectangular prisms, while solution injection of 6 in tri-n-octylphosphine onto Si/SiO(2)(100) substrates heated to 200-220 degrees C resulted in the formation of wires. PXRD and EDX analysis of the products confirmed the phase purity of the PbTe materials.

Synthesis, structural characterization and DNA binding affinity of new bioactive nano‐sized transition metal complexes with sulfathiazole azo dye for therapeutic applications

“…XRD is deemed to be one of the most useful techniques for obtaining structural microcrystalline information regarding the studied compounds . Also, it is usually applied to provide an explicit view concerning the lattice dynamics of compounds in the solid phase . Hence, the XRD patterns of the ligand (H 2 L) and complexes 1 – 5 were obtained in the 0° < 2 θ < 90° range of scattering angle.…”

Solution based CVD of main group materials

“…106,107 The PbSe films were grown at 250-500 1C and powder XRD showed that the cubic form of PbSe had formed at all temperatures. 106,107 The PbSe films were grown at 250-500 1C and powder XRD showed that the cubic form of PbSe had formed at all temperatures.…”

Morphology‐Tailored Synthesis of PbSe Nanocrystals and Thin Films from Bis[N,N‐diisobutyl‐N′‐(4‐nitrobenzoyl)selenoureato]lead(II)

“…We have reported the use of [bis(diselenoimidodialkylphosphinato)lead(II)] [Pb{N(PR 2 Se) 2 2 ] complexes as singlesource precursors for the deposition of PbSe thin films by low-pressure LP-CVD and aerosol-assisted (AACVD) experiments. [59][60][61][62] However, the deposited films have signifi- cant levels of phosphorus contamination with the phosphorus originating from the precursor. [59] Recently, it was shown that cadmium complexes of N,N-dialkyl-NЈ-acylthiourea or the corresponding N,N-dialkyl-NЈ-acylselenourea can be used as single-source precursors for the synthesis of CdS or CdSe nanoparticles.…”