Synthesis of phase‐pure SnS particles employing dithiocarbamate organotin(IV) complexes as single source precursors in thermal decomposition experiments

Abstract

Preparation of tin(II ] (4). Phase-pure tin(II) sulfide has been obtained by pyrolysis of these precursors at 350• C in N 2 . Thermogravimetric analysis, X-ray powder diffraction, scanning electron microscopy, X-ray electron probe microanalysis and 119 Sn Mössbauer spectroscopy revealed that the complexes decompose in a single and sharp step (1 and 2), or in pseudo-single stage (3 and 4), to produce SnS. We have also measured the bandgap energies of the residues using electronic spectroscopy in the solid state and the result relates well to that in the literature for SnS, 1.3 eV. A decomposition mechanism was also proposed for each complex based on electrospray ionization tandem mass spectrometric results. The synthetic method used in this work might be useful for the preparation of pure SnS on a large scale.

Great influence of a small amount of capping agents on the morphology of SnS particles using xanthate as precursor

“…The formation of SnS nanoflakes should be a characteristic growth habit for orthorhombic SnS in solution which had been commonly reported previously [13]. If the molar ratio of C 2 H 5 OCS 2 K to SnCl 2 was increased to 2.4, slightly excess C 2 H 5 OCS 2 − may act as capping reagent and coordinate to Sn 2+ because the coordination number of Sn 2+ is 6 [27]. This coordination interaction may control the growth rate of different crystal faces, resulting in the formation of belt-like SnS architectures.…”

Dithiocarbamate Complexes as Single Source Precursors to Nanoscale Binary, Ternary and Quaternary Metal Sulfides

“…This is a potentially important finding, as SnS could then result simply from a second reductive-elimination of thiuram monosulfide (TMS) from these dimers, and indeed, TGA of [Sn­(S 2 CNEt 2 ) 2 (μ-S)] 2 shows its clean decomposition between 325 and 375 °C to afford SnS 2 (Scheme ). Since these reports, others have reported TGA of a range of Sn­(IV) complexes, − with O’Brien and co-workers showing that AACVD of [Bu 2 Sn­(S 2 CNR 2 ) 2 ] and [Ph 2 Sn­(S 2 CNR 2 ) 2 ], with both symmetric and unsymmetric DTCs, deposit thin films of sheet-like orthorhombic SnS from toluene solutions at between 450 and 530 °C …”

Synthesis, characterization and antifungal activity of new dithiocarbamate-based complexes of Ni(II), Pd(II) and Pt(II)

“…We have been interested in attaching functionalized DTC ligands to metal cations in order to evaluate their biocide responses as a consequence of the new bonding, and chemical or structural properties [21][22][23][24][25][26]. In the last two years we have been exploring ligands such as [S 2 CNMe(R 0 )] À , {R 0 = ÀCH 2 CH(OMe) 2 or = 2-methyl-1,3-dioxolane} [27][28][29].…”