نتایج جستجو برای: h h2o
تعداد نتایج: 544560 فیلتر نتایج به سال:
During a systematic study of monofluorophosphates, i.e., compounds comprising the tetrahedral anion PO3F2?, twelve, for most part new, were obtained from aqueous solutions. Crystal structure refinements based on single crystal X-ray diffraction data revealed previously unknown structures CdPO3F(H2O)2, Cr2(PO3F)3(H2O)18.8, Pb2(PO3F)Cl2(H2O), (NH4)2M(PO3F)2(H2O)2 (M = Mg, Mn, Co), NH4Cr(PO3F)2(H2...
The crystal structure of the title compound, [Cu(H2O)6](BF4)2·3C4H4N2O2, comprises discrete [Cu(H2O)6](2+) cations and BF4 (-) anions along with three equivalents of pyrazine 1,4-dioxide (pzdo). The hexa-aqua-copper(II) ion and all three pzdo mol-ecules lie about crystallographic inversion centers. The lattice is supported by an extensive hydrogen-bonding network. O-H⋯O hydrogen bonding between...
BACKGROUND Causing pneumothorax is one of the main concerns of lung recruitment maneuvers in pediatric patients, especially newborns. Therefore, these maneuvers are not performed routinely during anesthesia. Our objective was to determine the pressures that cause pneumothorax in healthy newborns by a prospective experimental study of 10 newborn piglets (<48 h old) with healthy lungs under gener...
Two chain-like coordination polymers, namely, {[Zn(saes)(4,4’-bipy)(H2O)]·H2O}n (1) and {[Cd (Hsaes)2(4,4’-bipy)(H2O)2]·2H2O}n (2), where H2saes = 2-(2-hydroxybenzylideneamino)ethanesulfonic acid and 4,4’-bipy = 4,4’-bipyridine, have been synthesized and characterized by singlecrystal X-ray diffraction, IR spectroscopy, elemental, thermogravimetric and photoluminescence analysis. X-Ray diffract...
A fundamental understanding of the interactions between coadsorbed water and hydrogen on metallic surfaces is critical to many chemical processes including catalysis and electrochemistry. Here, we report on the strong and intricate interactions between coadsorbed H/D and water on the close-packed (111) surface of gold. Deuterium isotopic labeling shows H/D exchange in H-D2O and D-H2O systems, i...
The reaction of bis(diphenylphosphino)methane dioxide (dppmO2) with LaCl3, LaI3 or LaCl3/[NH4][PF6] produces [La(dppmO2)4]Y3 (Y = Cl, I, PF6) which contain eight-coordinate, distorted square antiprismatic cations. In contrast, LaCl3 or LaCl3/[NH4][PF6] and 1,2-bis(diphenylphosphino)ethane dioxide (dppeO2) produce the polymer [LaCl3(dppeO2)1.5]n, which has a six-coordinate La centre with three m...
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