Iron MOFs

A values have been obtained for oxidation of benzenediols by [Fe(bipy)(CN)4], including the effect of pH, i.e., of protonation of the iron(III) complex, and the kinetics of [Fe(phen)(CN)4] oxidation of catechol and of 4-butylcatechol reported. Redox potentials of [Fe(bipy)2(CFQ7] and of [Fe(bipy)(CN)4] are available. The self-exchange rate constant for [Fe(phen)2(CN)2] has been estimated from kinetic data for electron transfer reactions involving, inter alios, catechol and hydroquinone as 2.8 2.5 x 10 dm moF s (in dimethyl sulfoxide). 

Dimethoxyhydroxyphenylflurone has been proposed as a chromogenic reagent for the spectrophotometric determination (e = 1.3610 1 mof cm ) of trace amounts of Mo in steel and pure iron [4]. Thiazolylazo compounds were used as chromogenic reagents to determine Mo in human urine [5]. Thiazolyl blue tetrazolium bromide and 3,4,5-trihydroxybenzoic acid and nitrobluetetrazolium chloride were employed to determine Mo in soil [6,7]. 

Yaghi et have taken the approach using trimeric building blocks a stage further with their synthesis of MOF-500, in which trimeric iron carboxylate units similar to those found in MlL-88, -100 and -101, but partially terminated by coordinated sulfate units that remain during the synthesis, are connected by coordination of the iron atoms in two further, hierarchical levels of complexity... 

Magnetically separable catalysts synthesised by Saikia that show effective utilisation of Fe304 impregnated chromium-based MOF have been used for the solvent-free oxidation of benzyl alcohol in the presence of TBHP. Sulfonic acid functionalised chromium MILlOl can be used as an efficient catalyst for the vapour-phase dehydration of butanol by oleic acid. Also, bimetallic MOF catalysts of iron and chromium (Fe(Cr)-MIL-lOl) have received attention for epoxidation of styrene to styrene oxide with excellent selectivity and catalytic recyclability. ... 

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