Craig L. Hill、Michael M. Williamson1985-01-01Journal of the Chemical Society Chemical Communications
The principal kinetic product in the Rothemund template synthesis of sterically hindered tetra-arylporphyrins is not the metalloporphyrin complex but the bis(dipyrromethene) complex; the latter has been isolated from a typical porphyrin preparation, that of tetrakis(2,6-dichlorophenyl)porphyrin, and characterized by u…
Porphyrin and Phthalocyanine ChemistryMetal-Catalyzed Oxygenation MechanismsSurface Chemistry and Catalysis
A. Blumstein、M. M. Gauthier、O. Thomas 等 4 位作者1985-01-01Faraday Discussions of the Chemical Society
The homologous series of thermotropic nematic main-chain polyesters [graphic omitted] has been investigated. In the case of even values of n, a smectic phase appears at n= 18. An odd–even oscillation of nematic order parameters associated with the mesogen is observed near the clearing temperature, Tc. At the same time…
Liquid Crystal Research AdvancementsSurfactants and Colloidal SystemsAdvanced Materials and Mechanics
Michihiro Miyake、Osamu Kaji、Nobuhiro Nakagawa 等 4 位作者1985-01-01Journal of the Chemical Society Faraday Transactions 2 Molecular and Chemical Physics
The structure of liquid formamide has been examined by X-ray analysis. It is concluded that there are distorted ring dimers which consist of hydrogen-bonded formamide molecules in the liquid state. The most likely model is similar to the crystal structure of formamide.
Liquid Crystal Research AdvancementsSurfactants and Colloidal Systems
Peter A. Hamilton、Timothy P. Murrells1985-01-01Journal of the Chemical Society Faraday Transactions 2 Molecular and Chemical Physics
The reactions of ground-state oxygen and nitrogen atoms with phosphine have been studied using a discharge-flow system with detection of both free-radical and molecular species by molecular-beam sampling mass spectrometry. By observing the decay of PH3 in an excess of O, the rate constant for the reaction O + PH3 [gra…
Atmospheric chemistry and aerosolsCatalytic Processes in Materials ScienceCatalysis and Oxidation Reactions
Piotr Tomasik、Zbigniew Ratajewicz、George R. Newkome 等 4 位作者1985-01-01Wiley eBooks
Essentials of Coordination Chemistry. Sigma Pyridine Coordination Compounds with Nontransition Metals. Sigma Pyridine Coordination Compounds with Transition Metals. Coordination Compounds of Metals with Pyridine--l----Oxides. Pi--Coordination Compounds of Pyridine with Metals. Pyridine Intercalation Compounds. Clathra…
Solid-state spectroscopy and crystallography
M. Kléman1985-01-01Journal de Physique Lettres
The local configuration of polymers results from a competition between entropy effects and attractive forces which provide a high density. The resulting frustration is studied geometrically in a curved space representation reminiscent of the curved space representation for blue phases. Within this frame work, we study…
Liquid Crystal Research AdvancementsMaterial Dynamics and PropertiesSurfactants and Colloidal Systems
Kazuo Akashi1985-01-01Pure and Applied Chemistry
Abstract
Catalytic Processes in Materials ScienceHigh-Temperature Coating Behaviors
Seiji Fukuyama、Kiyoshi Yokogawa、Kiyokatsu Kudo 等 4 位作者1985-01-01Transactions of the Japan Institute of Metals
The fatigue properties of the soluted and the sensitized type 304 stainless steel were investigated in high pressure hydrogen up to 4.0 MPa at room temperature. It is found that both the number of cycles to failure and the fatigue limits of the soluted and the sensitized steel decreased with increasing hydrogen pressu…
Microstructure and Mechanical Properties of SteelsHydrogen embrittlement and corrosion behaviors in metalsMaterial Properties and Failure Mechanisms
M. Szilágyi1985-01-01Proceedings of the IEEE
A novel approach to electron/ion optical synthesis and optimization is presented. Low-aberration field distributions are sought by dynamic programming or optimal control procedures in the form of continuous curves constructed of cubic splines. A very simple algorithm is proposed for the reconstruction of the electrode…
Advanced Electron Microscopy Techniques and ApplicationsAdvancements in Photolithography TechniquesElectron and X-Ray Spectroscopy Techniques
CHRISTIAN ESKENAZI、G.G.A. Balavoine、Florent Meunier 等 4 位作者1985-01-01Journal of the Chemical Society Chemical Communications
RuCl3·n(H2O) or FeSO4 associated with bipyridyl or substituted phenanthrolines, catalyse the expoxidation of stilbenes by IO4– or ClO–; using phenanthrolines bearing electron donating or withdrawing groups, it is possible to modulate the reactivity of these systems.
Metal complexes synthesis and propertiesPorphyrin and Phthalocyanine ChemistryMetal-Catalyzed Oxygenation Mechanisms
I. Olefjord、Lars Nyborg1985-01-01Powder Metallurgy
The surface of gas atomized ferritic powder, Fe–25Cr, was studied by ESCA and Auger spectro- scopy. During atomization reaction products are formed on the surface of the powder. Due to the very low oxygen potential in the atomizer only oxides of the strong oxide forming elements Cr, Mn, and Si are formed during coolin…
Fusion materials and technologiesHigh-Temperature Coating BehaviorsNuclear Materials and Properties
Hélène Paquet、Joëlle Duplay、Marie-Madeleine Valleron-Blanc 等 4 位作者1985-01-01Clay Minerals Society eBooks
Abstract Chemical analyses were carried out on individual particles in <2-μm size fractions to study smectite-palygorskite and smectite-sepiolite assemblages extracted from calcareous and dolomitic continental formations in Provence, southeastern France. A plot of the octahedral composition of 145 individual pa…
Clay minerals and soil interactions
R.N. Edmonds、M. R. Harrison、Peter P. Edwards1985-01-01Annual Reports Section C (Physical Chemistry)
R. N. Edmonds, M. R. Harrison and P. P. Edwards, Annu. Rep. Prog. Chem., Sect. C: Phys. Chem., 1985, 82, 265 DOI: 10.1039/PC9858200265
Magnetism in coordination complexesLanthanide and Transition Metal ComplexesElectron Spin Resonance Studies
Aidan T. Harrison、Oliver W. Howarth1985-01-01Journal of the Chemical Society Dalton Transactions
Unlike decavanadate(6–), tetradecavanadophosphate(9–) shows pH-dependent differential rates of exchange of oxygen with solvent water. If the anion's structure is described as a Keggin-type ‘sphere’ with polar ‘caps,’ then at pH > 5 the caps are kinetically stabilised with respect to the ‘equator,’ whereas at pH < 1 th…
Conducting polymers and applicationsPolyoxometalates: Synthesis and ApplicationsCovalent Organic Framework Applications
Yizhak Marcus、S. Glikberg1985-01-01Pure and Applied Chemistry
Abstract
Analytical Chemistry and ChromatographyCrystallization and Solubility StudiesChemical Thermodynamics and Molecular Structure
Harald Astheimer、Françoise Nepveu、Leonhard Walz 等 4 位作者1985-01-01Journal of the Chemical Society Dalton Transactions
The crystal and molecular structures of the title compounds [Cu4L34]·9CH3OH (3) and [Cu4L14]·8CH3CH2OH (4) have been determined from single-crystal X-ray diffraction data and refined to final R values of 0.062 (R′= 0.052) using 2 191 independent reflections for (3) and 0.062 (R′= 0.055) using 2 458 independent reflect…
Metal complexes synthesis and propertiesMagnetism in coordination complexesMetal-Catalyzed Oxygenation Mechanisms
P. McKay、D. B. Mitton1985-01-01CORROSION
Electrochemical methods have been used to study the crevice and pitting corrosion behavior of unalloyed titanium in chloride solutions at elevated temperatures (maximum 150 C). The investigation was focused primarily on crevice corrosion. The techniques which were used included simultaneous measurement of the corrosio…
Corrosion Behavior and InhibitionHydrogen embrittlement and corrosion behaviors in metalsConcrete Corrosion and Durability
G. Braunegg、B. Bogensberger1985-01-01Acta Biotechnologica
Abstract Alcaligenes latus strain DSM 1123 has been tested for the production of Poly‐D(−3)‐3‐hydroxybutyric acid using sucrose as the only carton source. The strain is capable of accumulating the polymer associated to the growth very fast and lup to high concentrations in the biomass. Alcaligenes lotus seems to be ve…
Enzyme Catalysis and Immobilizationbiodegradable polymer synthesis and propertiesMicrobial Metabolic Engineering and Bioproduction
D. M. Byrne、Austin J. Brouns、F. C. Case 等 6 位作者1985-01-01Journal of Vacuum Science & Technology B Microelectronics Processing and Phenomena
Capacitive and inductive infrared mesh filters have been fabricated using electron-beam lithography combined with a lift-off procedure. A single level of PMMA was used to create positive tone patterns while a two-level metal-on-polymer process was used to create negative tone patterns. Resonant structures consisting o…
Photonic and Optical DevicesSemiconductor Lasers and Optical DevicesOptical Coatings and Gratings
Leonhard Walz、H. Paulus、W. Haase1985-01-01Journal of the Chemical Society Dalton Transactions
The crystal and molecular structures of the title compounds have been determined using three-dimensional X-ray diffractometer data and refined to a final R value of 0.0263 for bromo(3-dimethylaminopropan-1-olato)copper(II)(1), 0.0349 for chloro(3-dimethylaminopropan-1-olato)copper(II)(2), and 0.0268 for (3-diethylamin…
Metal complexes synthesis and propertiesMagnetism in coordination complexesMetal-Catalyzed Oxygenation Mechanisms