High-valent iron species of oxidation states +4, +5, and +6, have been involved as intermediates in enzymatic reactions, in green organic synthesis, and in purification and disinfection of water. Many of these species have been synthesized to understand their role in different systems, which include ferryl complexes (oxoiron(IV) (Fe IV=O), oxoiron(V) (FeV=O)), iron(IV / V / VI)-nitride complexe...

When Streptomyces sp. strain Wak. A-305 is cultured in iron (III)- or cobalt (II)-containing media, tris(p-vinylphenyl-4-hydroxy-3-nitrosobenzoato-N3, O4)ferrate(II) (ferroverdin) or the analogous tris-cobalt(III) complex, respectively, is produced intracellularly. In contrast, when cultured in transition metal ion-limiting media. Streptomyces sp. strain Wak. A-305 did not produce p-vinylphenyl...

In the title salt, (C(16)H(36)N)[Fe(C(3)H(9)OSi)(4)], the cation contains a central N atom bonded to four n-butyl alkyl groups in a tetra-hedral arrangement, while the anion contains a central Fe(III) atom tetra-hedrally coordinated by four trimethyl-silanolate ligands.

In the title salt, (C(10)H(9)N(2))(2)[Fe(C(8)H(2)NO(6))(C(8)H(3)NO(6))]·3H(2)O, the Fe(III) atom is O,N,O'-chelated by dianionic and trianionic ligands in a slightly distorted octa-hedral coordination geometry. The cations and ferrate anions are linked into a layered structure; the layers are connected through the uncoordinated water mol-ecules into a hydrogen-bonded three-dimensional supra-mol...

The rates of oxidation of cyanide with Fe(VI) were measured as a function of pH (8.0-12) and temperature (1530 °C). The reaction was found to be first order for each reactant. The rates decrease with increasing pH. The energy of activation was found to be 38.9 ( 1.0 kJ mol-1 at pH 9.0. The removal of cyanide by oxidation with Fe(VI) was studied at pH 7.5, 9.0, and 12.0. Fe(VI) removal efficienc...

Ciprofloxacin (CIP) antibiotic liquid waste is the most common found in hospital discharge waters. The accumulation of CIP can increase mutation, microbial resistance, and toxicity environment due to its low biodegradability longevity Thus, methods for eliminating are important. Advanced Oxidation Process (AOP) method with ferrate (VI) has good redox potential water disinfection, degradation or...

The objective of this work was to develop a novel wet-scrubbing process using Fe(VI) for the simultaneous removal of gaseous NO and SO(2). The oxidation of SO(2) and NO with Fe(VI) was studied in aqueous solution at alkaline pH (9.0-11.0). A stoichiometric molar ratio for NO and SO(2) oxidation with Fe(VI) was determined to be nearly 3.0. Sulfate and nitrate was identified as final products by ...