A formação e composição de vanadatos de cobre obtidos pela interação de sulfato de cobre com diferentes vanadatos de sódio (orto, piro, meta e poli) foram investigadas por técnicas eletrométricas envolvendo titulações condutométricas e pH-métricas entre reagentes a várias concentrações em meios aquoso e aquoso-etanólico. As inflexões e degraus bem definidos nas curvas de titulações fornecem evi...

This study has been carried out to "identify highly sensitive behavior on healthy nutrition (orthorexia nervosa-ON)" in residence medical doctors (MD) in the Faculty of Medicine. Diagnoses of ON was based on the presence of a disorder with obsessive-compulsive personality. The study is a cross-sectional research, which reached out to the entire 318 MD. The ORTO-15 test was used to propose a dia...

The characteristic trait of individuals developing a pathological obsession and preoccupation with healthy foods and a restrictive and avoidant eating behavior is described as orthorexia nervosa (ON). For ON, neither universal diagnosis criteria nor valid tools for large-scale epidemiologic assessment are available in the literature. The aim of the current study is to analyze the psychometric p...

The Sn(IV) atom of the stannate anion in the title salt, (C(7)H(11)N(2))(2)[SnBr(4)(C(6)H(5))(2)], lies on a center of inversion in a tetra-gonally compressed octa-hedron. The two independent Br atoms in the anion are hydrogen-bond acceptors for the same cation.

We report density functional studies of electron rich interfaces between KTaO3 or KNbO3 and CaSnO3 or ZnSnO3 and in particular the nature of the interfacial electron gasses that can be formed. We find that depending on the details these may occur on either the transition metal or stannate sides of the interface and in the later case can be shifted away from the interface by ferroelectricity. We...

The cation and the anion in the title salt, (C(6)H(16)N)[SnCl(4)(C(6)H(4)NO(2))], are linked by an N-H⋯O hydrogen bond. The Sn(IV) atom in the stannate anion is chelated by the pyridine-2-carboxyl-ate group and exists in a cis-SnCl(4)NO octa-hedral geometry. The cation is disordered over two positions in a 0.564 (1):0.436 (1) ratio.

The Sn(IV) atom in the title ammonium stannate, (Et(3)NH)[Sn(C(5)H(3)N(2)O(2))Cl(4)], is chelated by an pyrazine-2-carboxyl-ate ligand and exists in a cis-SnCl(4)NO octa-hedral geometry. The cation and the anion are linked by an N-H⋯N hydrogen bond.

The asymmetric unit of the title organotin salt, (C(8)H(20)N)[Sn(C(6)H(5))(3)(CH(4)O(3)P)(2)], contains two dibutyl-ammonium cations and two stannate(IV) anions consisting each of two monodentately bonding methyl hydrogenphosphate groups attached to an Sn(C(6)H(5)) unit. The overall coordination environment of the two Sn(IV) atoms is trigonal-bipyramidal defined by three phenyl C atoms in equat...

Wide-bandgap perovskite stannates are of interest for the emergent all-oxide transparent electronic devices due to their unparalleled room temperature electron mobility. Considering advantage amorphous material in integrating with non-semiconductor platforms, we herein reported optical and properties prototypical stannate, barium stannate (BaSnO3) thin films, which were deposited at annealed va...