The aromatic diamine 4-aminopyridine was used for the synthesis of a series supramolecular metal–organic sulfate salts. obtained compounds with formula (C5H7N2)2[MII(H2O)6](SO4)2 (MII = Fe, Co, Ni, Cu and Zn) (C5H7N2)2[Mn(H2O)4(SO4)2] crystallize triclinic symmetry (S.G. P $$\overline{1 }$$ ). These complexes possess hybrid structure type an interlayer distance that varies from 10 to 12 Å depen...

Proton and sulfate inhibition of the obligatory chloride-chloride exchange of human erythrocytes was measured at 0 degrees C to determine their mechanism of reaction with the anion transporter. The proton and sulfate that are co-transported by this mechanism at higher temperatures behaved as nontransported inhibitors at 0 degrees C. We analyzed the data in terms of four molecular mechanisms: (1...

Bis(4-hydroxyphenyl)methanone (BHPM), a common ultraviolet stabilizer and filter (USF), is extensively added in sunscreens; however, BHPM proven as an endocrine disruptor, posing serious threat to aquatic ecology, should be then removed. As sulfate radical (SO4•−) could useful for eliminating emerging contaminants, oxone appears favorable source reagent of SO4•− degrading BHPM. Even though coba...

Materials (cement stone samples) in the CaO-K2O-SO3-H2O system with target phase compositions, including syngenite K2Ca(SO4)2·H2O and calcium sulfate dihydrate CaSO4·2H2O, were prepared from powder mixtures of anhydrite CaSO4, and/or calciolangbeinite K2Ca2(SO4)3, potassium K2SO4 via hydration reactions at a water/powder ratio within an interval 0.5–0.9. It was revealed that samples contents 25...

The crystal structure of mercury(I) sulfate (or mercurous sulfate), Hg2SO4, was re-determined based on modern CCD data. In comparison with the previous determination from Weissenberg film data [Dorm (1969 ▶). Acta Chem. Scand. 23, 1607-1615], all atoms were refined with anisotropic displacement parameters, leading to higher precision in terms of bond lengths and angles [e.g. Hg-Hg = 2.5031 (7) ...

The title compound, [Co(C3H7NO)(H2O)5]SO4·C3H7NO, contains five aqua ligands, a Co(II) atom, a sulfate ion and both a coordinating and a non-coordinating di-methyl-formamide (DMF) mol-ecule. The DMF solvent mol-ecule lies between the complex units, which are located along the b axis. The sulfate ion is for charge balance. The Co(II) atom has distorted octa-hedral coordination geometry, being li...

NaLa(SO4)2,H2O crystalline powder was obtained under hydrothermal conditions at 220°C. A coupled TGA/DTA experiment of exhibits a weight loss 260°C corresponding to the dehydration and an endothermal peak 774°C. To elucidate transformation mechanism as function temperature, single crystals have been grown 80°C, 300 800°C. For each phase, isolated structure determination performed. As already pu...

The formation constants of UO2SO4 (aq), UO2(SO4)2(2-), and UO2(SO4)3(4-) were measured in aqueous solutions from 10 to 75 degrees C by time-resolved laser-induced fluorescence spectroscopy (TRLFS). A constant enthalpy of reaction approach was satisfactorily used to fit the thermodynamic parameters of stepwise complex formation reactions in a 0.1 M Na(+) ionic medium: log 10 K 1(25 degrees C) = ...

Sulfate occurs naturally in the aquatic environment but its elevated levels can be toxic to life freshwater environments. We investigated toxicity of sulfate humic, soft whitefish (Coregonus lavaretus) from fertilization eggs hatching i.e. during critical phases early development. Anadromous Kokemäenjoki white?sh and sperm fertilization, embryos larvae were exposed long-term 175-day incubation ...