A new facile high yield preparative route for mixed-trinuclear acetate clusters

Vrubel, Heron; Hasegawa, T.; Oliveira, Elisabeth de; Nunes, Fábio Souza

doi:10.1016/j.inoche.2005.10.023

Cited by 19 publications

(17 citation statements)

References 12 publications

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“…The reduction wave was found to be dependent on scan rate (which is typical of irreversible electrode reactions) and pH. The simultaneous reduction in the three Fe(III) centres points to the equivalency of the three metal centres, and the irreversibility of the reduction is consistent with reports of similar complexes [36,37], where reversibility (mostly quasi) is only observed in strong donor-type solvents such as pyridine and its derivatives [1][2][3]. At a higher pH, the reduction potential is more negative.…”

Section: Adduct Formationsupporting

confidence: 84%

Mechanistic studies on the intramolecular electron transfer in an adduct species of the oxo-centred trinuclear iron(III) cation and l-ascorbic acid in aqueous solution

Lawrence

Thomas

Maragh

et al. 2011

Transition Met Chem

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The kinetics of the intra-molecular electron transfer of an adduct of L-ascorbic acid and the [Fe 3 III O(CH 3 -COO) 6 (H 2 O) 3 ] ? cation in aqueous acetate buffer was studied spectrophotometrically, over the ranges 2.55 B pH B 3.74, 20.0 B h B 35.0°C, at an ionic strength of 0.50 and 1.0 mol dm -3 (NaClO 4 ). The reaction of L-ascorbic acid and the complex cation involves the rapid formation of an adduct species followed by a slower reduction in the iron centres through consecutive one-electron transfer processes. The final product of the reaction is aqueous iron(II) in acetate buffer. The proposed mechanism involves the triaqua and diaqua-hydroxo species of the complex cation, both of which form adducts with L-ascorbic acid. At 25°C, the equilibrium constant for the adduct formation was found to be 86 ± 15 and 5.8 ± 0.2 dm 3 mol -1 for the triaqua and diaquahydroxo species, respectively. The kinetic parameters derived from the rate expression have been found to be: k 0 = (1.12 ± 0.02) 9 10 -2 s -1 for the combined spontaneous decomposition and k 1 = (4.47 ± 0.06) 9 10 -2 s -1 (DH 1 à = 51.0 ± 2.3 kJ mol -1 , DS 1 à = -100 ± 8 J K -1 mol -1 ), k 2 = (4.79 ± 0.38) 9 10 -1 s -1 (DH 2 à = 76.5 ± 0.8 kJ mol -1 , DS 2 à = 6 ± 3 J K -1 mol -1 ) for the triaqua and diaqua-hydoxo species, respectively. Abbreviation Trimer [Fe 3III O(CH 3 COO) 6 (H 2 O) 3 ] ?

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Section: Adduct Formationsupporting

confidence: 84%

Mechanistic studies on the intramolecular electron transfer in an adduct species of the oxo-centred trinuclear iron(III) cation and l-ascorbic acid in aqueous solution

Lawrence

Thomas

Maragh

et al. 2011

Transition Met Chem

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“…[19]. Briefly, equimolar proportions of iron(III) chloride and ammonium hydroxide were mixed in a beaker.…”

Section: Synthesis Of Iron(iii) Acetate [Fe 3 O(ac) 6 (H 2 O) 3 ]Ac (mentioning

confidence: 99%

Structure and morphology of spinel MFe2O4 (M=Fe, Co, Ni) nanoparticles chemically synthesized from heterometallic complexes

Naidek

Bianconi

Rocha

et al. 2011

Journal of Colloid and Interface Science

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“…23 A series of mixed-metal MIL-127 materials with tailored properties is prepared. We primarily synthesized mixed-metal acetate building blocks using conditions adapted from previously reported protocols 24 ( Figure 1 and Figure S1) i.e., neutral mixed metal building blocks with general formula Fe III…”

mentioning

confidence: 99%

Direct accessibility of mixed-metal (iii/ii) acid sites through the rational synthesis of porous metal carboxylates

et al. 2015

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The scalable and environmentally-friendly synthesis of mixed Fe(III)/M(II) (M = Ni, Co, Mg) polycarboxylate porous MOFs based on the Secondary Building Unit approach is reported. A combination of in situ infrared spectroscopy, (57)Fe Mössbauer spectrometry and adsorption microcalorimetry confirms the direct accessibility of the iron(III) and metal(II) sites under low temperature activation conditions.

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A new facile high yield preparative route for mixed-trinuclear acetate clusters

Cited by 19 publications

References 12 publications

Mechanistic studies on the intramolecular electron transfer in an adduct species of the oxo-centred trinuclear iron(III) cation and l-ascorbic acid in aqueous solution

Mechanistic studies on the intramolecular electron transfer in an adduct species of the oxo-centred trinuclear iron(III) cation and l-ascorbic acid in aqueous solution

Structure and morphology of spinel MFe2O4 (M=Fe, Co, Ni) nanoparticles chemically synthesized from heterometallic complexes

Direct accessibility of mixed-metal (iii/ii) acid sites through the rational synthesis of porous metal carboxylates

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