34409-33-1Relevant articles and documents
Synthesis and crystal structures of bis(dibenzyl dithiocarbamato)Cu(II) and Ag(I) complexes: Precursors for Cu1.8S and Ag2S nano-photocatalysts
Ajibade, Peter A.,Botha, Nandipha L.,Oluwalana, Abimbola E.,Omondi, Bernard,Sikakane, Berlinda M.
, (2020)
We report the synthesis and crystal structures of bis(dibenzyl dithiocarbamato) copper(II) and silver(I) complexes and their use as precursors to prepare Cu1.8S and Ag2S nanoparticles. Single crystal analysis of bis(dibenzyl dithiocarbamato)Cu(II) complex consist of a monomeric entity where the two dibenzyl dithiocarbamate ligands form a distorted square planar geometry around the Cu(II) ion. The bis(dibenzyl dithiocarbamato)Ag(I) formed hexameric coordination complex consisting of two distorted hexagonal Ag3S3 rings. The complexes were thermolysed at 220 °C to prepare copper sulphide and silver sulphide nanoparticles. Powder X-ray diffraction (p-XRD) patterns of the copper sulphide nanoparticles were indexed to digenite Cu1.8S, while silver sulphide nanoparticles were confirmed to be acathinite Ag2S. High-resolution transmission electron microscopy (HRTEM) images showed Ag2S nanoparticles with particle size in the range 11.4–27.4 nm while Cu1.8S nanoparticles are semi-spherical in shape with slightly agglomerated particles in the range 6.9–24.0 nm. The as-prepared nanoparticles were used as nano-photocatalysts for the degradation of methylene blue dye (MB) under UV light irradiation with degradation efficiency of 42.52% and 48.39% for Cu1.8S and Ag2S nanoparticles respectively.
Structural, morphological and optical properties of iron sulfide, cobalt sulfide, copper sulfide, zinc sulfide and copper-iron sulfide nanoparticles synthesized from single source precursors
Sathiyaraj,Thirumaran
, (2019/12/09)
Iron sulfide (1), cobalt sulfide (2), copper sulfide (3), zinc sulfide (4), and copper-iron sulfide (5) nanoparticles were prepared from [Fe(dbzdtc)3], [Co(dbzdtc)3], [Cu(dbzdtc)2], [Zn(dbzdtc)2] and [Cu(dbzdtc)3][FeCl4] (where dbzdtc = N,N-dibenzyldithiocarbamate), respectively. The synthesized samples 1–5 were characterized by X-ray diffraction (XRD), field emission scanning electron microscopy (FESEM), transmission electron microscopy (TEM), high-resolution transmission electron microscopy (HRTEM), UV–Vis, photoluminescence and Fourier transform infrared (FT-IR) spectroscopy techniques. In the X-ray diffraction patterns of samples 1, 3–5, sharp peaks are observed which indicates that the as-prepared metal sulfide nanoparticles, 1,3–5 are crystalline. EDAX spectra confirm the composition of the metal sulfides. The SAED spots of as-prepared copper sulfide and zinc sulfide supports the crystalline nature of the nanoparticles. UV–Vis absorption and photoluminescence spectra of the synthesized nanoparticles 1–5 show a significant blue shift compared to that of the respective bulk metal sulfide. Infrared spectral studies on metal sulfides (Samples 1,2,4 and 5) confirm the presence of capping agent ethylenediamine (en).
Neutral and ionic complexes of C60 with metal dibenzyldithiocarbamates. Reversible dimerization of C60 ?- in ionic multicomponent complex [Crl(C 6H6)2?+]·(C 60?-)·0.5[Pd(dbdtc)2]
Konarev, Dmitri V.,Kovalevsky, Andrey Yu.,Otsuka, Akihiro,Saito, Gunzi,Lyubovskaya, Rimma N.
, p. 9547 - 9553 (2008/10/09)
New molecular complexes of C60 with metal(II) dibenzyldithiocarbamates, M(dbdtc)2·C60·0. 5(C6H5Cl), where M = CuII, NiII, PdII, and PtII (1-4) and an ionic multicomponent complex [Crl(C6H6)2?+] ·(C60?-)·0.5[Pd(dbdtc)2] (5) (Cr-(C6H6)S: bis(benzene)chromium) were obtained. According to IR, UV-visible-NIR, and EPR spectra, 1-4 involve neutral components, whereas 5 comprises neutral Pd(dbdtc)2 and C 60?- and Crl(C6H 6)2?+ radical ions. The crystal structure of 5 at 90 K reveals strongly puckered fullerene layers alternating with those composed of Pd(dbdtc)2. The Crl(C6H 6)2?+ radical cations are arranged between the layers. Fullerene radical anions form pairs within the layer with an interfullerene C...C contact of 3.092(2) A, indicating their monomeric state at 90 K. This contact is essentially shorter than the sum of van der Waals radii of two carbon atoms, and consequently, C60 ?- can dimerize. According to SQUID and EPR, single-bonded diamagnetic (C60-)2 dimers form in 5 below 150-130 K on slow cooling and dissociate above 150-170 K on heating. The hysteresis was estimated to be 20 K. For the (C60-) 2 dimers in 5, the dissociation temperature is the lowest among those for ionic complexes of C60 (160-250 K). Fast cooling of the crystals within 10 min from room temperature down to 100 K shifts dimerization temperatures to lower than 60 K. This shift is responsible for the retention of a monomeric phase of 5 at 90 K in the X-ray diffraction experiment.
