Complexes of platinum and palladium with β-diketones and DMSO: Synthesis, characterization, molecular modeling, and biological studies

Almeida, Janaina do Couto; Marzano, Ivana Marques; Paula, Flávia C. S. de; Pivatto, Marcos; Lopes, Norberto P.; Souza, Paula Carolina de; Pavan, Fernando Rogério; Formiga, André Luiz Barboza; Pereira-Maia, Elene C.; Guerra, Wendell

doi:10.1016/j.molstruc.2014.07.023

Cited by 32 publications

(9 citation statements)

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“…Molecular compounds with β-keto-enol functions have attracted great attention for several years due to their many applications in organic and inorganic chemistry [1][2][3][4][5]. In recent years, β-keto-enols ligands appear as one of the classical chelating ligands playing a significant role in coordination chemistry [6,7].…”

Section: Introductionmentioning

confidence: 99%

β-Keto-enol Tethered Pyridine and Thiophene: Synthesis, Crystal Structure Determination and Its Organic Immobilization on Silica for Efficient Solid-Liquid Extraction of Heavy Metals

et al. 2016

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Abstract:Molecules bearing β-keto-enol functionality are potential candidates for coordination chemistry. Reported herein is the first synthesis and use of a novel designed ligand based on β-keto-enol group embedded with pyridine and thiophene moieties. The product was prepared in a one-step procedure by mixed Claisen condensation and was characterized by EA, m/z, FT-IR, ( 1 H, 13 C) NMR and single-crystal X-ray diffraction analysis. The new structure was grafted onto silica particles to afford a chelating matrix which was well-characterized by EA, FT-IR, solid-state 13 C-NMR, BET, BJH, SEM and TGA. The newly prepared organic-inorganic material was used as an adsorbent for efficient solid-phase extraction (SPE) of Cu(II), Zn(II), Cd(II) and Pb(II) from aqueous solutions and showed a capture capacity of 104.12 mg¨g´1, 98.90 mg¨g´1, 72.02 mg¨g´1, and 65.54 mg¨g´1, respectively. The adsorption capacity was investigated, in a batch method, using time of contact, pH, initial concentration, kinetics (Langmuir and Freundlich models), and thermodynamic parameters (∆G˝, ∆H˝and ∆S˝) of the system effects.

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Section: Introductionmentioning

confidence: 99%

β-Keto-enol Tethered Pyridine and Thiophene: Synthesis, Crystal Structure Determination and Its Organic Immobilization on Silica for Efficient Solid-Liquid Extraction of Heavy Metals

et al. 2016

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“…Pd(acac) 2 was purchased from Tokyo Chemical Industry Co., Ltd. and used as received. Pd(tfa) 2 and Pd(tta) 2 were synthesized according to the methods in the literature [27,28]. Liquid CO 2 (99.99%) was purchased from Taiyo Nissan Co., Ltd.…”

Section: Reagentsmentioning

confidence: 99%

Solubilities of Palladium(II) <i>β</i>-Diketonates (<i>β</i>-Diketonate = Acetylacetonate, Trifluoroacetylacetonate, Thenoyltrifluoroacetonate) in Supercritical Carbon Dioxide

Ohashi

Fukutani

Tamaoki

2021

SERDJ

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The solubilities of palladium(II) -diketonates (PdL 2 , L = acetylacetonate (acac), trifluoroacetylacetonate (tfa), and thenoyltrifluoroacetonate (tta)) in supercritical carbon dioxide (SC-CO 2 ) from 318 -338 K and 8 -25 MPa were investigated by UV-vis spectrophotometer equipped with a high-pressure optical cell. The molar absorptivities for Pd(acac) 2 , Pd(tfa) 2 , and Pd(tta) 2 in SC-CO 2 were estimated as 1.14  10 4 M -1 cm -1 at 324 nm, 8.16  10 3 M -1 cm -1 at 336.5 nm, and 2.70  10 4 M -1 cm -1 at 322.5 nm, respectively. Solubilities in SC-CO 2 increase in order of Pd(tta) 2 < Pd(acac) 2 < Pd(tfa) 2 , i.e., 6.5  10 -6 < 5.2  10 -5 < 1.3  10 -4 M at 318 K and 11.5 MPa. The experimental solubilities were correlated using the equation proposed by Chrastil and the thermodynamic parameters for each PdL 2 were estimated.

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“…Os valores obtidos foram signifi cativamente parecidos aos observados dos complexos de Pd(II) não eletrólito (apresentando valores de 2-24 Ω cm 2 .moL -1 ) MOURA, et al 2015;COUTO ALMEIDA, et al, 2014;MOURA, et al 2020), já os complexos de caráter eletrólito apresentaram valores altos para condutividade molar. Para verifi car a estabilidade dos complexos foi realizado um estudo através das medidas de condutividade molar com o tempo (as soluções foram protegidas da luz) (Figura 6).…”

Section: Condutividade Molarunclassified

ANÁLISE BROMATOLÓGICA DO ÓLEO DE COCO (Cocos nucifera L.) E DO ÓLEO DE ABACATE (Persea americana Mill.)

Rocha¹,

Uchôa²,

Rocha³

et al. 2021

A Geração De Novos Conhecimentos Na Química 2

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Complexes of platinum and palladium with β-diketones and DMSO: Synthesis, characterization, molecular modeling, and biological studies

Cited by 32 publications

References 42 publications

β-Keto-enol Tethered Pyridine and Thiophene: Synthesis, Crystal Structure Determination and Its Organic Immobilization on Silica for Efficient Solid-Liquid Extraction of Heavy Metals

β-Keto-enol Tethered Pyridine and Thiophene: Synthesis, Crystal Structure Determination and Its Organic Immobilization on Silica for Efficient Solid-Liquid Extraction of Heavy Metals

Solubilities of Palladium(II) <i>β</i>-Diketonates (<i>β</i>-Diketonate = Acetylacetonate, Trifluoroacetylacetonate, Thenoyltrifluoroacetonate) in Supercritical Carbon Dioxide

ANÁLISE BROMATOLÓGICA DO ÓLEO DE COCO (Cocos nucifera L.) E DO ÓLEO DE ABACATE (Persea americana Mill.)

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