Phase and morphology dependence on the annealing temperature of tin sulfides and oxides prepared by thermal decomposition of organotin precursors

Siqueira, Guilherme Oliveira; Porto, Arilza de Oliveira; Lima, Geraldo Μ. de; Matencio, Túlio

doi:10.1016/j.jorganchem.2012.05.024

Cited by 6 publications

(5 citation statements)

References 18 publications

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“…The 13 C NMR spectra showed a weak signal of the thioureide carbon (-NCS 2 ) for all the complexes in the region between 202 and 200 ppm [19], while carbon signals of the phenyl moiety resonated between 135 and 125 ppm. The signal in the region 59.8-57.0 ppm, found in the spectra of the complexes, has been attributed to the methylene carbon close to the electronegative N atom.…”

Section: Nmr ( 1 H 13 C and 119 Sn) Spectral Studymentioning

confidence: 97%

“…Tin sulfide has a very good semiconducting property and a good band gap energy in all its phases; therefore, it is supported to use it as a semiconductor in solar cells [6,12]. The SnS phase has attracted more attention than the other phases due to its electronic band gap (1.3 eV), which lies between that of Ga and Si [12,13]. As such, it has become more imperative to continue to study the thermal behavior of derivatives of tin(IV) dithiocarbamate group such as organotin(IV) dithiocarbamate complexes with the goal of understanding the possible trend in the decomposition pattern of the compound.…”

Section: Introductionmentioning

confidence: 99%

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Diorganotin(iv) benzyldithiocarbamate complexes: synthesis, characterization, and thermal and cytotoxicity study

et al. 2020

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AbstractAmmonium benzyldithiocarbamate, represented as NH4L, was prepared and used in the complexation reaction involving three organotin(iv) salts, represented as R2SnCl2 (R = CH3, C4H9, and C6H5). The structures of the synthesized complexes [(CH3)2SnL2] (1), [(C4H9)2SnL2] (2), and [(C6H5)2SnL2] (3) were established using various spectroscopic techniques (Fourier transform infrared spectroscopy, 1H NMR, 13C NMR, and 119Sn NMR) and elemental analysis. Thermal decomposition of the complexes using thermogravimetric analysis under nitrogen showed no definite pathway in the pattern of the complexes even though they are structurally related. X-ray diffraction studies of the final residue showed a common diffraction pattern for the complexes and confirmed SnS as the product of the thermal treatment. Cytotoxicity studies of these complexes against the human tumor cell lines (HeLa and MCF-7) compared favorably with the used standard 5-fluorouracil drug, with complexes 2 and 3 showing very good activity toward the used cell lines.

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Section: Nmr ( 1 H 13 C and 119 Sn) Spectral Studymentioning

confidence: 97%

Section: Introductionmentioning

confidence: 99%

Diorganotin(iv) benzyldithiocarbamate complexes: synthesis, characterization, and thermal and cytotoxicity study

et al. 2020

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“…Two types of residues, including tin sulfide or tin oxide, are often obtained from the thermal decomposition of organotin(IV) dithiocarbamate complexes, and they are dependent on the decomposition condition (inert or in air) [ 97 ]. Tin sulfides can exist in three possible phases: SnS that exhibit layer structures, SnS 2 and Sn 2 S 3 which has a mixed valence of Sn 2+ /Sn 4+ with a ribbon-like structure [ 16 ].…”

Section: Chemistry Of Organotin(iv) Dithiocarbamatementioning

confidence: 99%

“…The product of the thermal decomposition of organotin(IV) dithiocarbamate has various applications. For example, tin oxides are used as light detectors (visible and infrared), solar cells, light emitting diodes and as gas sensors [ 97 ]. Tin sulfides have outstanding electronic and optical properties due to their narrow bad gap.…”

Section: Chemistry Of Organotin(iv) Dithiocarbamatementioning

confidence: 99%

Organotin(IV) Dithiocarbamate Complexes: Chemistry and Biological Activity

2018

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Significant attention has been given to organotin(IV) dithiocabamate compounds in recent times. This is due to their ability to stabilize specific stereochemistry in their complexes, and their diverse application in agriculture, biology, catalysis and as single source precursors for tin sulfide nanoparticles. These complexes have good coordination chemistry, stability and diverse molecular structures which, thus, prompt their wide range of biological activities. Their unique stereo-electronic properties underline their relevance in the area of medicinal chemistry. Organotin(IV) dithiocabamate compounds owe their functionalities and usefulness to the individual properties of the organotin(IV) and the dithiocarbamate moieties present within the molecule. These individual properties create a synergy of action in the hybrid complex, prompting an enhanced biological activity. In this review, we discuss the chemistry of organotin(IV) dithiocarbamate complexes that accounts for their relevance in biology and medicine.

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“…Figure 3(a) shows the XRD pattern of Ni-Sn/MWCNT nanocomposite. This indicates the presence of face-centered cubic Ni (ICSD #43-397), tetragonal Sn (ICSD #40038) and monoclinic Ni 3 Sn 4 (ICSD #105-363) phases [21,22]. As found, the MWCNTs in the matrix are very difficult to be detected using the XRD analysis.…”

Section: Structural and Morphological Propertiesmentioning

confidence: 88%

Enhanced hydrogen storage capacity of Ni/Sn-coated MWCNT nanocomposites

2018

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The hydrogen storage capacity of Ni-Sn, Ni-Sn/multi-walled carbon nanotube (MWCNT) and Ni/Sn-coated MWCNT electrodes was investigated by using a chronopotentiometry method. The Sn layer was electrochemically deposited inside pores of nanoscale Ni foam. The MWCNTs were put on the Ni-Sn foam with nanoscale porosities using an electrophoretic deposition method and coated with Sn nanoparticles by an electroplating process. X-ray diffraction and energy dispersive spectroscopy results indicated that the Sn layer and MWCNTs are successfully deposited on the surface of Ni substrate. On the other hand, a field-emission scanning electron microscopy technique revealed the morphology of resulting Ni foam, Ni-Sn and Ni-Sn/MWCNT electrodes. In order to measure the hydrogen adsorption performed in a three electrode cell, the Ni-Sn, Ni-Sn/MWCNT and Ni/Sn-coated MWCNT electrodes were used as working electrodes whereas Pt and Ag/AgCl electrodes were employed as counter and reference electrodes, respectively. Our results on the discharge capacity in different electrodes represent that the Ni/Sn-coated MWCNT has a maximum discharge capacity of ∼30 000 mAh g for 20 cycles compared to that of Ni-Sn/MWCNT electrodes for 15 cycles (∼9500 mAh g). By increasing the number of cycles in a constant current, the corresponding capacity increases, thereby reaching a constant amount for 20 cycles.

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Phase and morphology dependence on the annealing temperature of tin sulfides and oxides prepared by thermal decomposition of organotin precursors

Cited by 6 publications

References 18 publications

Diorganotin(iv) benzyldithiocarbamate complexes: synthesis, characterization, and thermal and cytotoxicity study

Diorganotin(iv) benzyldithiocarbamate complexes: synthesis, characterization, and thermal and cytotoxicity study

Organotin(IV) Dithiocarbamate Complexes: Chemistry and Biological Activity

Enhanced hydrogen storage capacity of Ni/Sn-coated MWCNT nanocomposites

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