Structure of hexa-μ-acetato-1κ3O:2κ3O';2κ3O:3κ3O'-bis(1,10-phenanthroline)-1κ2N1,N10;2κ2N1,N10-trimanganese(II)

Tsuneyoshi, K.; Kobayashi, Hanako; Miyamae, Hiroshi

doi:10.1107/s0108270192006395

Cited by 13 publications

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“…The trinuclear linear compound [Mn 3 (2,2′-bipy) 2 (C 3 H 3 O 2 ) 6 ] is framed in structural prototype presented in literature [Mn 3 (RCOO) 6 (N–N) 2 ], where:RCOO − is the anion of isobutyrate and N–N is 1,10-phenantroline/2,2′-bipyridine [32];RCOO − is the acetate ion, while N–N is 2,2′-bipyridine [33], 1,10-phenantroline [34], 2,2′-bis(1-methylimidazolyl)-phenylmetoxymethane [35], 2-(2-pyridyl)benzimidazole [36], N -(1,3-dimethylimidazolidin-2-ylidene)quinolin-8-amine [37];RCOO − is chloroacetate and N–N is 2,2′-bipyridine [38]. …”

Section: Resultsmentioning

confidence: 99%

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Synthesis, Structural Characterization, Antimicrobial Activity, and In Vitro Biocompatibility of New Unsaturated Carboxylate Complexes with 2,2′-Bipyridine

Scăeţeanu

Chifiriuc

Bleoţu³

et al. 2018

Molecules

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The synthesis, structural characterization, cytotoxicity, and antimicrobial properties of four new complexes formed by employing acrylate anion and 2,2′-bipyridine are reported herein. X-ray crystallography revealed the trinuclear nature of [Mn3(2,2′-bipy)2(C3H3O2)6] (1), meanwhile complexes with general formula [M(2,2′-bipy)(C3H3O2)2(H2O)x]∙yH2O ((2) M: Ni, x = 1, y = 0; (3) M: Cu, x = 1, y = 0; (4) M: Zn, x = 0, y = 1; 2,2′-bipy: 2,2′-bipyridine; C3H3O2: acrylate anion) were shown to be mononuclear. The lowest minimum inhibitory concentration (MIC) of 128 μg mL−1 was recorded for all four tested complexes against Candida albicans, for complex (3) against Escherichia coli, and for complex (4) against Staphylocococcus aureus. Compounds (3) and (4) were also potent efflux pumps activity inhibitors (EPI), proving their potential for use in synergistic combinations with antibiotics. Complexes (1)–(4) revealed that they were not cytotoxic to HCT-8 cells. They also proved to interfere with the cellular cycle of tumour HCT-8 cells by increasing the number of cells found in the S and G2/M phases. Taken together, these results demonstrate the potential of zinc and copper complexes for use in the development of novel antimicrobial and anti-proliferative agents.

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Section: Resultsmentioning

confidence: 99%

“…RCOO − is the acetate ion, while N–N is 2,2′-bipyridine [33], 1,10-phenantroline [34], 2,2′-bis(1-methylimidazolyl)-phenylmetoxymethane [35], 2-(2-pyridyl)benzimidazole [36], N -(1,3-dimethylimidazolidin-2-ylidene)quinolin-8-amine [37];…”

Section: Resultsmentioning

confidence: 99%

Synthesis, Structural Characterization, Antimicrobial Activity, and In Vitro Biocompatibility of New Unsaturated Carboxylate Complexes with 2,2′-Bipyridine

Scăeţeanu

Chifiriuc

Bleoţu³

et al. 2018

Molecules

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“…In all those compounds, the ligation of the Mn ions is provided mainly by O- and N-donor atoms from the various aminoacid residues present in the metalloproteins. In order to prepare functional and structural models of the Mn compounds that are present in metalloenzymes, efforts have been centered on the synthesis and study of manganese carboxylate complexes with various chelating N-donor ligands, such as 2,2′-bipyridine (bpy) [10–13], 1,10-phenanthroline (phen) [10, 14–16], and 2-(2-pyridyl)benzimidazole [17]. As a result a plethora of dinuclear, trinuclear and tetranuclear manganese compounds containing carboxylato groups or/and nitrogen-donor ligands have been prepared and characterized [4, 7, 10–30].…”

Section: Introductionmentioning

confidence: 99%

Synthesis and Characterization of a Linear [Mn₃(O₂CMe)₄(py)₈]²⁺ Complex

Moushi

Kizas

Nastopoulos

et al. 2010

Bioinorganic Chemistry and Applications

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Two new compounds that consist of the linear trinuclear manganese(II) cation [Mn3(O2CMe)4(py)8]2+ cocrystallizing with different counteranions (I3 −, [1]; ClO4 −, [2]) are reported. Complex 1 was prepared from the reaction of [Mn(O2CMe)2] · 4H2O with I2 in MeCO2H/py, whereas complex 2 was isolated from the reaction of [Mn3O(O2CMe)6(py)3] · py with [Mn(ClO4)2] · 6H2O in MeCN/py. The crystal structures of both compounds were determined by single crystal X-ray crystallography. Magnetic susceptibility studies that were performed in microcrystalline powder of 1 in the 2–300 K range revealed the presence of antiferromagnetic exchange interactions that resulted in an S = 5/2 ground spin state.

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Synthesis, Crystal Structures, and Magnetic and Catalytic Studies on a Linear Trinuclear Mn^II₃ Complex

et al. 2015

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Recyclable gold nanocatalysts with controllable morphology are in‐situ formed on the solid substrate by a facile ultrasonic spray pyrolysis method. The Au nanoparticles on Mo substrates form spheres, while on Si icosahedra, or after addition of Cu ions to the precursor solution, decahedra are obtained. The catalytic properties are studied for the reduction of 4‐nitrophenol as a model reaction and compared with those of several stabilized colloidal Au catalysts. Due to the absence of any stabilizers on the surface and the good adhesion to the solid support, the substrate‐immobilized Au nanoparticles exhibit excellent catalytic activity and stability as well as simple reuse without activity loss and easy recyclability. Furthermore, it is shown that by this spray pyrolysis process also the inner walls of a tube can easily be coated. The efficiency of this resulting flow‐through reactor is investigated. Finally, naked Au nanoparticle films enable a unique comparative investigation of the catalytic reaction rate in the presence of typical ligands used for the stabilization of colloidal nanoparticle catalysts. Only with the films of naked Au nanoparticles is a constant Au base available, while different ligands lead to different sizes and probably shapes of colloidal particles thus not allowing an exact comparison. It turns out that all investigated stabilizers reduce the catalytic efficiency.

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Structure of hexa-μ-acetato-1κ3O:2κ3O';2κ3O:3κ3O'-bis(1,10-phenanthroline)-1κ2N1,N10;2κ2N1,N10-trimanganese(II)

Cited by 13 publications

References 0 publications

Synthesis, Structural Characterization, Antimicrobial Activity, and In Vitro Biocompatibility of New Unsaturated Carboxylate Complexes with 2,2′-Bipyridine

Synthesis, Structural Characterization, Antimicrobial Activity, and In Vitro Biocompatibility of New Unsaturated Carboxylate Complexes with 2,2′-Bipyridine

Synthesis and Characterization of a Linear [Mn₃(O₂CMe)₄(py)₈]²⁺ Complex

Synthesis, Crystal Structures, and Magnetic and Catalytic Studies on a Linear Trinuclear Mn^II₃ Complex

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Structure of hexa-μ-acetato-1κ3O:2κ3O';2κ3O:3κ3O'-bis(1,10-phenanthroline)-1κ2N1,N10;2κ2N1,N10-trimanganese(II)

Cited by 13 publications

References 0 publications

Synthesis, Structural Characterization, Antimicrobial Activity, and In Vitro Biocompatibility of New Unsaturated Carboxylate Complexes with 2,2′-Bipyridine

Synthesis, Structural Characterization, Antimicrobial Activity, and In Vitro Biocompatibility of New Unsaturated Carboxylate Complexes with 2,2′-Bipyridine

Synthesis and Characterization of a Linear [Mn3(O2CMe)4(py)8]2+ Complex

Synthesis, Crystal Structures, and Magnetic and Catalytic Studies on a Linear Trinuclear MnII3 Complex

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Synthesis and Characterization of a Linear [Mn₃(O₂CMe)₄(py)₈]²⁺ Complex

Synthesis, Crystal Structures, and Magnetic and Catalytic Studies on a Linear Trinuclear Mn^II₃ Complex