The evolution and the current trends in a new area of chemistry of organometalloporphyrins, in metalloporphyrin chemistry are reviewed. Synthesis and properties of out of plane, di—nuclear, and "Skewered" metalloporphyrins are described. The new chemistry of metalloporphyrins was initiated by the application of Cr(CO)6, metal carbonyl in general, for insertion of Cr ion (metal ions) into por— p...

Mineralogy and specific surface area are major controls on the stabilities of ferric oxyhydroxide microparticles in natural waters. The thermodynamic stabilities of ferric oxyhydroxides, as described by the activity product in solution pK = -log [Fe(3+)] [OH(-)](3) range from pK = 37.1 for freshly precipitated amorphous oxyhydroxide to pK = 44.2 for well crystallized goethite. The sizes of susp...

On 5 November 2015, a large tailing deposit failed in Brazil, releasing an estimated 32.6 to 62 million m3 of iron mining tailings into the environment. Tailings from Fundão Dam flowed down through Gualaxo do Norte and Carmo riverbeds floodplains reached Doce River. Since then, bottom sediments have become enriched Fe(III) oxyhydroxides. Dissimilatory iron-reducing microorganisms (DIRMs) are an...

Background Sucroferric oxyhydroxide is a non-calcium, iron-based phosphate binder indicated for the treatment of hyperphosphataemia in adult dialysis patients. This post hoc analysis of a randomized, 24-week Phase 3 study and its 28-week extension was performed to evaluate the long-term effect of sucroferric oxyhydroxide on iron parameters. Methods A total of 1059 patients were randomized to ...

The trinuclear title compound, [Co(3)(CH(3)COO)(4)(C(20)H(22)N(2)O(6))(2)]·2CH(2)Cl(2), contains mixed-valence cobalt ions in the following order Co(III)-Co(II)-Co(III) where all the three cobalt ions are hexa-coordinated. The central cobalt ion is situated on an inversion centre and is in an all-oxygen environment, coordinated by four phenolate O atoms and two O atoms from bridging acetate gro...

2015 Sucroferric oxyhydroxide (Velphoro®; Vifor Fresenius Medical Care Renal Pharma Ltd) is an iron-based phosphate binder approved for the control of serum phosphorus concentrations in chronic kidney disease patients receiving dialysis. Clinical data indicate that sucroferric oxyhydroxide has similar efficacy to sevelamer carbonate in lowering serum phosphorus levels; however, with a substanti...

A new cobalt(III) complex salt, [cis-Co(en)2(C8H7O2)2](C8H7O2) Æ 2H2O, has been synthesized and characterized by single crystal Xray structure determination. This is the first example of a cobalt(III) compound of this type with two p-methylbenzoate groups in cisconfiguration. The cations and anions are associated in chains by strong NH . . . O hydrogen bonds. The crystal lattice is stabilized b...

in this paper, the mer-co(nh3)3(no2)3 complex was used as a new precursor for synthesizing spinel-type cobalt oxide nanoparticles (co3o4nps).thermal decomposition of the complex at low temperature (175 °c) resulted in the co3o4nps without using expensive and toxic solvents or complicated equipment. xrd, ft-ir, sem, edx, and tem were employed to characterize the product, and its optical and magn...