摘要: The uranyl selenite (H2en) [(UO2)(SeO3)(HSeO3)] (NO3)·0.5H2O is synthesized by slow evaporation of an aqueous mixture of UO2(NO3)2, SeO2, and en (56% yield).关键词: uranium, U selenium, Se nitrogen, N structure (solids and liquids luminescence, fluorescence (solids and ...
To reveal the binding sites for Mg2 þ and K þ ions within TmCdsA and identify the amino-acid residues responsible for coordinating these two distinct cations, we have prepared BaCl2-, MnCl2-, TlNO3- or sites of divalent and CsCl-soaked crystals monovalent cations in to probe the ...
The gray contours are guides to the eye and emphasize the positive/negative slope of the data points. Figure 7. Energy shifts obtained from core level and valence band evaluation. The dashed vertical line highlights the reference sample thickness from where the core level shifts are counted....
Two copper(Ⅱ) complexes with 2 oxo propionic acid salicyloyl hydrazone, Cu(C 10 H 8N 2O 4)·(H 2O) 2 (1) and Cu(C 10 H 8N 2O 4)(CH 3OH)(H 2O) (2) (C 10 H 8N 2O 2- 4 is the dinegative ion of 2 oxo propionic acid salicyloyl hydrazone), have been synthesized....
The high-temperature data indicate strong antiferromagnetic coupling between Mn{sup 3+} ions in the form of a large, negative {theta} = {minus}943(7) K. Powder neutron diffraction as a function of temperature disclosed magnetic long-range ordering below 130 K, where the chemical and magnetic...
[Zn(hba)2(tmdp)]n (1), a Zn-coordination polymer (CP), prepared by the reaction of Zn(NO3)2•6H2O, 4-hydroxybenzoic acid (Hhba) and 4,4′- trimethylenedipyridine (tmdp) was reported. The compound was characterised, using CHN, single crystal and powder X-ray diffraction analysis, ...
Correlations have been established between the spectral evolution and the crystal distortion of these compounds. La1-xCaxMnO3±y oxides with 0 < x 1 have been synthesised by the same route, at 700 °C and under an oxygen pressure of 0.21atm. It is shown that a negative correlation exists...
Consider the Lewis structure of dichloroacetic acid (CHCl2COOH). For the chemical bond C-O, determine the type of the chemical bond and the bond polarity. a. Polar covalent bond and the partial negative charge is on C b. Polar covalent bond an...
Addi- tionally, metallic anodes do not require solid-state diffusion of ions to transfer material from the charged to the discharged state, but merely the successful deposition/dissolution of the ions onto/from the surface of the metal. Magnesium metal has a high negative reduction potential (...
Along with negative stop voltage modulated multi-level, current compliance dependent multi-level has also been demonstrated and resistance ratio up to 2000 has been achieved even for a thin (<5 nm) switching material. By considering oxidation-reduction of the conducting filaments, the current-...