TGA studies of metoclopramide complexes of cobalt(II) in the solid state

Chetana, P.R.; Siddaramaiah, X.; Ramappa, P. G.

doi:10.1016/j.tca.2003.10.012

Cited by 16 publications

(10 citation statements)

References 18 publications

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“…[45][46][47] Concerning drugs, many studies are applied to determine their properties when making complexes with transition metal or during investigation about drug release of nanoparticles. [48][49][50][51][52][53] In the present study, TGA was applied to characterize the antibiotic doripenem considering its behavior when submitted to heating. The differential and integrated thermogravimetric curves for the drug, obtained with a heating rate of 10 o C min -1 in N 2 atmosphere are shown in Figure 5 and 6, respectively.…”

Section: Tgamentioning

confidence: 99%

Characterization of the antibiotic doripenem using physicochemical methods: chromatography, spectrophotometry, spectroscopy and thermal analysis

et al. 2011

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Recebido em 1/11/10; aceito em 14/5/11; publicado na web em 22/7/11 Doripenem was characterized through physicochemical and spectroscopic techniques, as well as thermal analysis. TLC (Rf = 0.62) and HPLC (rt = 7.4 min) were found to be adequate to identify the drug. UV and infrared spectra showed similar profile between doripenem bulk and standard. The 1 H and 13 C NMR analysis revealed chemical shifts that allowed identifying the drug. Thermal analysis demonstrated three steps with mass loss, at 128, 178 and 276 o C. The work was successfully applied to qualitative analysis of doripenem, showing the reported methods can be used for physicochemical characterization of doripenem.

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Section: Tgamentioning

confidence: 99%

Characterization of the antibiotic doripenem using physicochemical methods: chromatography, spectrophotometry, spectroscopy and thermal analysis

et al. 2011

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“…According to thermogravimetric analysis, the complexes were thermally decomposed in a stepwise manner within the temperature range of 25–1000°C. [ 36 ] In the TG curve of complex 1 , the first step at 28–300°C (obs. = 13.92% and calc.…”

Section: Resultsmentioning

confidence: 99%

Novel metformin complexes: Geometry optimization, non‐isothermal kinetic parameters, DNA binding, on–off light switching and docking studies

Shekhar

Rajeshwari

Jayasree

et al. 2022

Applied Organom Chemis

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Novel three water‐soluble chromium(III) complexes of types [Cr(Cl)(gly‐H)2(met)H2O] (1), [Cr(Cl)(met)(pro‐H)2H2O] (2) and [Cr(Cl)(his‐H)2(met)H2O] (3) (met = metformin, gly = glycine, pro = proline and his = histidine) have been synthesized. The geometrical structures have been shown to be octahedral, with substantial evidence from spectroanalytical techniques. Thermal investigations show the degradation pattern of the compounds from which the kinetic and thermodynamic parameters for the complexes' degradation were calculated using the Coats–Redfern 13 distinct kinetic models. The quantum chemical parameters were computed using the energies of the molecular orbital structures, developed from optimized geometrical structures, to evaluate the stability of the complexes. The groove binding of the complexes with CT‐DNA was confirmed by absorption and emission spectroscopy, viscosity measurements, gel electrophoresis and molecular docking studies.

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“…Thermogravimetry (TG) analyses carried out in a TA Instruments SDT Q600 simultaneous TG/DSC device (Quito, Japan) employing samples with 5 mg, heated from room temperature (~ 23°C) to 500°C, the heating rate was 10°C/min and nitrogen flow rate of 100 mL/min. The activation energy (Ea) was evaluated using the Horowitz‐Metzger model, according to the Equation : 30

italicLn ([], italicLn \frac{(W_{0} - W_{f})}{(W - W_{f})}) = \frac{E_{a} θ}{R T_{s}^{2}} .

…”

Section: Characterizationsmentioning

confidence: 99%

Polypropylene/wood powder/ethylene propylene diene monomer rubber‐maleic anhydride composites: Effect of PP melt flow index on the thermal, mechanical, thermomechanical, water absorption, and morphological parameters

et al. 2020

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Environmental damage promoted trough post‐consumer waste from the wood industry has worried the society, while its inadequate disposal has raised concerns of the scientific community. Environmentally and economically effective alternative is reusing this residue to produce smart composites. Therefore, this work aimed to investigate the performance of polypropylene (PP)/Jatobá Wood Powder (WP) composites compatibilized with ethylene propylene diene monomer rubber‐maleic anhydride (EPDM‐MA). The effect of distinct melt flow index (MFI) (PP H103 and PP H503) was also investigated. The composites were characterized using differential scanning calorimetry, thermogravimetry, mechanical properties (tensile, flexural, impact, and Shore D hardness), heat deflection temperature, Vicat softening temperature, water absorption and scanning electron microscopy (SEM). Addition of EPDM‐MA, increased impact strength. The best performance was observed for the composition with 10% EPDM‐MA and PP with lower MFI (PP H503). EPDM‐MA also decreased the water absorption for both PP, most due to the chemical interactions among composite phases. SEM images suggest encapsulation of wood particles by EPDM‐MA, promoting better composites performance. Reported results are valuable for the recycling industry, as well as are economically and environmentally promising.

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TGA studies of metoclopramide complexes of cobalt(II) in the solid state

Cited by 16 publications

References 18 publications

Characterization of the antibiotic doripenem using physicochemical methods: chromatography, spectrophotometry, spectroscopy and thermal analysis

Characterization of the antibiotic doripenem using physicochemical methods: chromatography, spectrophotometry, spectroscopy and thermal analysis

Novel metformin complexes: Geometry optimization, non‐isothermal kinetic parameters, DNA binding, on–off light switching and docking studies

Polypropylene/wood powder/ethylene propylene diene monomer rubber‐maleic anhydride composites: Effect of PP melt flow index on the thermal, mechanical, thermomechanical, water absorption, and morphological parameters

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