Materials Literature
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ADVERTISEMENT RETURN TO ISSUEPREVArticlePhase-transition studies in polymesomorphic compounds. 1. Density studies in N-(p-n-hexyloxybenzylidene)-p-n-butylanilineN. V. S. Rao and V. G. K. M. PisipatiCite this: J. Phys. Chem. 1983, 87, 5, 899–902Publication Date (Print):March 1, 1983Publication History Published online1…
Ferrous/ferric equilibria were determined in alkali‐alkaline‐earth borosilicate glass as a function of temperature, oxygen partial pressure, and glass composition. Expected linear relations are found between log(Fe 2+ /Fe 3+ ) and log( p O 2 ) or 1/ T . The slopes of the correlation with 10g( p O 2 ) are near the expe…
We present results of calculations of the reflectivity of diffraction gratings of sawtooth profile, and of electric fields near such gratings. We employ a method based on the use of the extinction theorem, and the grating amplitude is not assumed small. This approach also allows one to calculate the electric fields wi…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTEpoxidation of alkenes with trichloroacetonitrile/hydrogen peroxide in a neutral biphasic solvent systemLuis A. Arias, Stevie Adkins, Christopher J. Nagel, and Robert D. BachCite this: J. Org. Chem. 1983, 48, 6, 888–890Publication Date (Print):March 1, 1983Publication Histor…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTMetal complexes with tetrapyrrole ligands. 30. The manganese-nitrogen triple bond. Synthesis and molecular stereochemistry of (5,15-dimethyl-2,3,7,8,12,13,17,18-octaethyl-5H,15H-porphinato)nitridomanganese(V)Johann W. Buchler, Christine Dreher, Kiong Lam Lay, Young J. Lee, a…
The low-temperature heat capacity of superconducting ternary iron silicides ${\mathrm{Lu}}_{2}$${\mathrm{Fe}}_{3}$${\mathrm{Si}}_{5}$, ${\mathrm{Sc}}_{2}$${\mathrm{Fe}}_{3}$${\mathrm{Si}}_{5}$, and ${\mathrm{Y}}_{2}$${\mathrm{Fe}}_{3}$${\mathrm{Si}}_{5}$ has been measured, revealing several anomalous properties of the…
The hydride Mg2NiH4 exhibits a phase transition from a low temperature to a high temperature phase at about 508 K. The dynamics of the hydrogen in the high temperature phase have been studied by cold neutron scattering experiments. According to these, the hydrogen atoms showed a high mobility, but the motion was mainl…
This work concerns three questions: How can one decide whether a particular liquid metal will wet a given oxide substrate? What does analysis of experimental data tell one about the nature of the metal-substrate interactions? Is there correlation with strong metal-support intereactions in catalysis? Comparison of the…
Adenylate cyclase of Escherichia coli K12 has been purified 17,000-fold to near homogeneity from a 5-fold overproducing strain. One major band of Mr = 92,000 and several minor bands are seen on sodium dodecyl sulfate-polyacrylamide electrophoresis of the purest fractions. Identification of the enzyme with the 92,000-D…
Abstract Fibers of poly( L ‐lactide) (PLLA) with a tensile strength up to 1.2 GPa and Young's modulus in the range of 12–15 GPA were obtained by a hot drawing of fibers spun from solution of PLLA in good solvents such as dichloromethane and trichloromethane. The tensile strength of fibers was strongly dependent on the…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTEffects of annealing and prior history on enthalpy relaxation in glassy polymers. 3. Experimental and modeling studies of polystyreneIan M. Hodge and G. S. HuvardCite this: Macromolecules 1983, 16, 3, 371–375Publication Date (Print):March 1, 1983Publication History Published…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTCofacial assembly of partially oxidized metallamacrocycles as an approach to controlling lattice architecture in low-dimensional molecular solids. Chemical and architectural properties of the "face-to-face" polymers [M(phthalocyaninato)O]n, where M = Si, Ge, and SnCarl W. Di…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTToward tricyclo[2.2.2.2]decane. 1. [n.2.2.2]Paddlane systems, n = 10-14Philip E. Eaton and Bernard D. LeipzigCite this: J. Am. Chem. Soc. 1983, 105, 6, 1656–1658Publication Date (Print):March 1, 1983Publication History Published online1 May 2002Published inissue 1 March 1983…
Mixtures of α‐A1 2 O 3 and NaAlO 2 corresponding to the eutectic composition 65 mot % A1 2 O 3 were heated in sealed platinum crucibles above the eutectic temperature (measured to be 1572°C in this study). Once melting was complete, the liquid was quenched and the resultant solid examined by X‐ray diffraction. Sodium…
An accurate intermolecular potential of the HFD-C form is proposed which appears to be the best representation of the Ar–Kr interaction. The potential, which possesses the correct long range behavior, predicts a wide variety of macroscopic and microscopic data. It is consistent with accurate second virial, viscosity,…
Abstract Nylon resins and CPE rubber can be melt-blended to give compositions which have useful properties. If the rubber is cured by dynamic vulcanization, high strength oil resistant thermoplastic elastomers result. Cold milling of melt-mixed compositions results in nylon-reinforced rubber which can be mixed with cu…
"Nuclear Chemical Engineering (2nd ed.)." Nuclear Technology, 60(3), pp. 439–440
Abstract Several metallophthalocyanines (MPc: M=Ni(II), Co(II), Zn(II), Pb(II), Fe(II), Sn(II), Cd(II), Mg(II), and Mn(III)) were obtained by heating phthalonitrile with metal salts in alcohols in the presence of 1,8-diazabicyclo[5.4.0]undec-7-ene. Metal acetylacetonates as well as metal halides were available as meta…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSynthesis and molecular structure of a nitrido(porphyrinato)chromium(V) complexJohn T. Groves, Tadashi Takahashi, and William M. ButlerCite this: Inorg. Chem. 1983, 22, 6, 884–887Publication Date (Print):March 1, 1983Publication History Published online1 May 2002Published in…
Potentiodynamic cyclic polarization of four orthodontic alloys (wires), namely Permachrome, Elgiloy, a beta-titanium alloy and Nitinol in a 1% NaCl solution within -500 mV and +300 mV (SCE) indicated the first three alloys to be passive whereas breakdown of passivity was observed on Nitinol. The SEM examination of the…