Materials Literature
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ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTTheoretical study of the ground- and excited-state reactivity of sodium and hydrogen fluoride. Comparison of SCF-CI and VB treatmentsAlain Sevin, Philippe C. Hiberty, and Jean Michel LefourCite this: J. Am. Chem. Soc. 1987, 109, 6, 1845–1852Publication Date (Print):March 1,…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTLuminescence from and absorption by the 3T1g level of the hexacyanocobaltate(III) ionL. Viaene and J. D'OlieslagerCite this: Inorg. Chem. 1987, 26, 6, 960–962Publication Date (Print):March 1, 1987Publication History Published online1 May 2002Published inissue 1 March 1987htt…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTStructure and electrochemical properties of antiferromagnetically coupled binuclear hydroxo-bridged copper(II) complexes with pyridazine and phthalazine ligands. Crystal and molecular structures of [.mu.-3,6-bis(1-pyrazolyl)pyridazine-N2,.mu.-N3,.mu.-N4,N5](.mu.-hydroxo)tric…
Abstract This paper describes the proper external potential formulation of a cathodic protection system employed for corrosion prevention of structures in infinite electrolytes. The boundary condition associated with the mathematical formulation is not of the standard type encountered in hydrodynamic, electrostatic or…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTDilead(II) chalcogenide anions Pb2Ch32- (Ch selenium, tellurium): a lead-207, tellurium-125 and selenium-77 solution NMR study. X-ray crystal structure of (2,2,2-crypt-K+)2Pb2Se32-Mar Bjorgvinsson, Jeffery F. Sawyer, and Gary J. SchrobilgenCite this: Inorg. Chem. 1987, 26, 5…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTPreparation and characterization of an (acylperoxo)iron(III) porphyrinJohn T. Groves and Yoshihito WatanabeCite this: Inorg. Chem. 1987, 26, 6, 785–786Publication Date (Print):March 1, 1987Publication History Published online1 May 2002Published inissue 1 March 1987https://pu…
Infrared spectroscopic studies of charge‐coupled substitution in silicate glasses and crystals along the joints x MAlO 2 (1 – x )SiO 2 (M = Li, Na, K, Rb, and Cs; 0.10 ≤ x ≤ 0.60) were carried out in the range 2000 to 200 cm −1 Three major absorption bands appeared in the 1100‐, 800‐, and 500‐cm −1 regions. For a spec…
The annealing effect of ethylene ionomers annealed at various temperatures and for various periods was studied by differential scanning calorimetry. Two endothermic melting peaks were observed for all the ethylene ionomers annealed. The melting peak at the lower temperature, which was assigned to bundlelike crystal ow…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTPhotodecomposition of acrolein in oxygen-nitrogen mixturesEdward P. Gardner, Paul D. Sperry, and Jack G. CalvertCite this: J. Phys. Chem. 1987, 91, 7, 1922–1930Publication Date (Print):March 1, 1987Publication History Published online1 May 2002Published inissue 1 March 1987h…
Abstract Ten commercial linear low‐density polyethylenes (LLDPE) were characterized by solution viscosity, size exclusion chromatography, SEC, and 13 C nuclear magnetic resonance. The resins were copolymers of ethylene with butene, hexene, or octene. They were prepared in gas phase (with narrow or very broad molecular…
MgO produced by vacuum decomposition of Mg(OH) 2 is formed as aggregates containing both open and closed pores. The surface area and the volume of the open pores, as measured by N 2 adsorption, were found to be 300 m 2 /g and 0.14 cm 3 /g, respectively. Through calorimetric and TEM studies, reported elsewhere, the ini…
Abstract Electrochemical oxidation of a solution containing BEDT-TTF, (n-C4H9)4NI3,and small amount of (n-C4H9)4NAuI2 gave a new ambient-pressure superconductor (Tc=3.6 K), which coexisted with the superconducting θ-type salt but was clearly distinguished by the X-ray examination. The crystal data are: (C10H8S8)2I3, m…
Abstract Mixed-layer clay minerals of illite-smectite, having smectite contents ∼25% and IS ordering, kaolinite-smectite, and a three-component variety with kaolinite-smectite-chlorite-like material are described from a Carboniferous paleosol in South Wales. The clays, which are restricted to particular horizons, are…
Molecular dynamics computer simulations were used to study surfaces of pure silica glass. The potentials used here were those previously established to model bulk silica and have been extended to study surface relaxation in a perfect vacuum. A large number of surfaces were made using different starting configurations;…
X-ray photoelectron spectroscopy analysis was performed on ion beam sputter deposited films of indium tin oxide as a function of O2 partial pressure during deposition. The oxygen partial pressure was varied over the range of 2.5×10−6–4.0×10−5 Torr. Changes in composition as well as in the deconvoluted In 3d5/2, Sn 3d5…
Three aspects of the interaction of a low energy electron beam with surface excitations are described. The long range dipolar scattering concentrates the inelastic electrons in a narrow lobe close to the specular reflection. The resulting spectra are quantitatively interpreted by the macroscopic dielectric theory in o…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTComparison of the molecular and electronic structures of (.mu.-oxo)bis[(5,10,15,20-tetraphenylporphyrinato)iron(III)] and (.mu.-oxo)bis[(7,8-dihydro-5,10,15,20-tetraphenylporphyrinato)iron(III)]Steven H. Strauss, Michael J. Pawlik, J. Skowyra, J. Rory Kennedy, Oren P. Anders…
The structural description, symmetry and diffraction properties of incommensurate modulated phases are revised using a real-space framework. The superspace formalism usually employed is reformulated using a practical description where no multidimensional geometrical constructions are needed. The incommensurate structu…
The various order-disorder-type models for crystals in the KDP (potassium dihydrogen phosphate) family are reviewed, beginning with the Slater-Takagi-Senko model, continuing with tunneling additions by Blinc and Svetina, and analyzing the pressure-induced tricritical point in the Slater-Takagi-Senko model. The possibi…
Interconnections will become the limit in performance and reliability at submicrometer dimensions. Long-distance interconnections are defined using models based on resistivity, and it is found that more than half of the interconnections will become categorized as such at 0.5-µm feature sizes. The resistivity of even l…