Materials Literature
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Molecular dynamics calculations based on atom–atom potentials and rigid nonpolarizable ions are used to study the cubic rotator phases of ammonium bromide (NH4Br). The nature of the orientational order exhibited by the ammonium ions is characterized using tetrahedral rotor functions (Mμ, μ=1,7). The quantities 〈M2μ〉 a…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTCarbon-carbon bond forming and breaking by a metal-assisted redox process in a nickel(II)-Schiff base complexSandro Gambarotta, Fabio Urso, Carlo Floriani, Angiola Chiesi-Villa, and Carlo GuastiniCite this: Inorg. Chem. 1983, 22, 26, 3966–3972Publication Date (Print):Decembe…
Abstract Kohlenstoff‐„Modifikationen”︁ zeigen — sofern sie überwiegend die Schichtstruktur des Graphits aufweisen – 1) elektronische Leitfähigkeit, 2) die Fähigkeit, Ionen oder Moleküle zwischen die Schichten des Gitters einzulagern, und 3) die Fähigkeit, über funktionelle Gruppen ihrer Oberflächen (im wesentlichen de…
Interdiffusion in Cu–Al thin film bilayers at temperatures between 160 and 300 °C has been studied by a combination of glancing-incidence x-ray diffraction, Rutherford backscattering spectroscopy, and transmission electron diffraction and microscopy. A sequential intermetallic compound formation was observed in sample…
Monoclinic telluric acid ammonium phosphate (TAAP) is shown to be a new class m ferroelectric with a Curie temperature close to ambient (48°C). Emphasis is placed on dielectric and thermal properties, but some optical results are also reported. The material behaves closely like TGS and, from a practical point of view,…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTClay-supported reagents. 5. Nitration of estrone into 2-nitroestrone by clay-supported ferric nitrateAndre Cornelis, Pierre Laszlo, and Pascal PennetreauCite this: J. Org. Chem. 1983, 48, 24, 4771–4772Publication Date (Print):December 1, 1983Publication History Published onl…
Abstract A preliminary set of ‘rules’ for acid-catalysis by ion-exchanged montmorillonites has been derived from the reaction of alkenes, alcohols and alicyclic acids over such catalysts. It has been shown that: 1. Cr(III) and Fe(III) are the most active interlayer cations. Although Al is also active, the exact proced…
Abstract Compositions and elemental distributions of anodic films formed on aluminium in aqueous borate electrolytes have been investigated by Rutherford backscattering spectroscopy (RBS) and associated nuclear reaction methods, together with controlled crystallization of film sections in the transmission electron mic…
Experimental studies were performed in a 4.8×2.8×3.5 m3 cold room with a HV transformer of 124 kVA, 120 kV. Atmospheric ice was accreted on a vertical string of three types of insulators: a classic glass insulator and two long-rod synthetic insulators. The results obtained show that flashover occurs at the lowest volt…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSynthesis and stereochemistry of mono-, bi-, and tetranuclear manganese thiolatesThomas Costa, Jay R. Dorfman, Karl S. Hagen, and R. H. HolmCite this: Inorg. Chem. 1983, 22, 26, 4091–4099Publication Date (Print):December 1, 1983Publication History Published online1 May 2002P…
The results of extensive studies of magnetic properties for the spinels ${\mathrm{Cu}}_{x}{\mathrm{Zn}}_{1\ensuremath{-}x}{\mathrm{Cr}}_{2}{\mathrm{Se}}_{4}$ are summarized. They concern the isotherms of static magnetization in applied induction up to 14 T, the N\'eel temperature ${T}_{N}$ (for $x\ensuremath{\le}0.1$)…
From the measurements of dielectric constants and X-ray diffraction profiles on a random mixture of a ferroelectric and an antiferroelectric, Rb 1- x (NH 4 ) x H 2 PO 4 , for \(0.3{\lesssim}x{\lesssim}1.0\), the phase diagram was determined. For \(0.8{\lesssim}x{\lesssim}1.0\) the long range antiferroelectric phase wa…
Thermoelectric coefficient measurements in the system Fe 3 O 4 ‐Fe 2 TiO 4 were used to determine the cation distributions from 600° to 1300°C. The cation distributions obeyed the relation ‐RT In K=‐9.61+2(‐0.0154 T ) b +0.0256 T (kJ/mol) where K Fe cd is the iron distribution constant and b is the tetrahedral Fe 3+ c…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTKinetics of long-distance ruthenium-to-copper electron transfer in [pentaammineruthenium histidine-83]azurinNenad M. Kostic, Ruth Margalit, Chi Ming Che, and Harry B. GrayCite this: J. Am. Chem. Soc. 1983, 105, 26, 7765–7767Publication Date (Print):December 1, 1983Publicatio…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTDynamics of the spiropyran-merocyanine conversion in solutionY. Kalisky, T. E. Orlowski, and D. J. WilliamsCite this: J. Phys. Chem. 1983, 87, 26, 5333–5338Publication Date (Print):December 1, 1983Publication History Published online1 May 2002Published inissue 1 December 198…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSymmetry of the magnetic orbitals and exchange interaction in copper iron (CuIIFeIII) and copper chromium (CuIICrIII) heterobinuclear complexes. Crystal structure of CuFe[(fsa)2en]Cl(H2O)(CH3OH).CH3OHYves Journaux, Olivier Kahn, Jacqueline Zarembowitch, Jean Galy, and Joel J…
ADVERTISEMENT RETURN TO ISSUEPREVArticleConformational flexibility and photochemistryPeter J. WagnerCite this: Acc. Chem. Res. 1983, 16, 12, 461–467Publication Date (Print):December 1, 1983Publication History Published online1 May 2002Published inissue 1 December 1983https://pubs.acs.org/doi/10.1021/ar00096a006https:/…
An X-ray survey of 71 globular clusters has been conducted with the Einstein Observatory. Fourteen new X-ray sources have been discovered in seven globular clusters; this brings to 18 the total number of known X-ray emitting globular clusters in the Galaxy. Multiple sources have been detected in NGC 5139 (ω Cen) and N…
Twenty‐seven mullite‐matrix aluminosilicate refractory bodies in three different refractory systems were synthesized and their thermal expansions were measured and then correlated with their corundum and mullite contents by regression analyses. Thermal expansion coefficients were also calculated from the physical prop…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTKinetic and equilibrium studies of complex formation of nickel(II) with carboxylate ligands at high pressure. 2. Nickel(II) glycolate and nickel(II) lactateTohru Inoue, Kazuhiro Sugahara, Kiyotaka Kojima, and Ryosuke ShimozawaCite this: Inorg. Chem. 1983, 22, 26, 3977–3981Pu…