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Quadridentate versus quinquedentate co-ordination of some N 5 and N 3 O 2 macrocyclic ligands and an unusual thermally controlled quintet ⇌ singlet spin transition in an iron( II ) complex

S. Martin Nelson、P. D. A. MCILROY、Clarke Stevenson 等 6 位作者1986-01-01Journal of the Chemical Society Dalton Transactions

The complexes [FeIIL(CN)2]·xH2O of the macrocyclic Schiff-base ligands L1–L3 derived from the condensation of 2,6-diacetylpyridine with 3,6-diazaoctane- 1,8-diamine (L1), 3,7-diazanonane1,9-diamine (L2), and 3,6-dioxaoctane-1,8-diamine (L3) have been prepared and their magnetic susceptibilities and Mössbauer spectra s…

Metal complexes synthesis and propertiesMagnetism in coordination complexesLanthanide and Transition Metal Complexes

Experimental Evidence for the Existence of the Ti 3 B 4 Phase

Karl E. Spear、P. Mcdowell、Francis Mcmahon1986-01-01Journal of the American Ceramic Society

Experimental evidence for the formation of Ti 3 B 4 with an orthorhombic Ta 3 B 4 ‐type structure is presented. This phase forms by a peritectic reaction between TiB 2 and liquid at ∼2200°C and is stable to temperatures at least as low as 1690°C, the lowest temperature at which samples were annealed. No evidence was f…

Boron and Carbon Nanomaterials ResearchMXene and MAX Phase MaterialsSuperconductivity in MgB2 and Alloys

Polymer-polymer miscibility

Sonja Krause1986-01-01Pure and Applied Chemistry

Abstract

Polymer crystallization and propertiesAdditive Manufacturing and 3D Printing TechnologiesMaterial Properties and Processing

Forces and the existence of stresses in invariant continuum mechanics

Reuven Segev1986-01-01Journal of Mathematical Physics

In an invariant formulation of pth-grade continuum mechanics, forces are defined as elements of the cotangent bundle of the Banach manifold of Cp embeddings of the body in space. It is shown that forces can be represented by measures which generalize the stresses of continuum mechanics. The mathematical representation…

Elasticity and Material ModelingThermoelastic and Magnetoelastic PhenomenaNonlocal and gradient elasticity in micro/nano structures

Transformations of Inorganic Phosphorus During the Flooding and Draining Cycles of Soil

R. N. Sah、D. S. Mikkelsen1986-01-01Soil Science Society of America Journal

Abstract Phosphorus transformations that occur after anoxic soils are drained have been associated with acute P deficiencies in rotation crops following rice. Flooded rice may not respond to P fertilization while rotation crops respond markedly to P fertilization on similar soils. The changes that occur among the inor…

Soil Carbon and Nitrogen DynamicsSoil and Water Nutrient DynamicsClay minerals and soil interactions

A Mn II Cu II Mn II trinuclear species with an S= 9/2 ground state

Yutao Pei、Yves Journaux、Olivier Kahn 等 5 位作者1986-01-01Journal of the Chemical Society Chemical Communications

The S= 9/2 ground state of a linear MnIICuIIMnII trinuclear complex arises from the parallel alignment of the local spins (5/2) of the two terminal MnII ions through antiferromagnetic interactions with the local spin (1/2) of the central CuII ion.

Physics of Superconductivity and MagnetismMagnetism in coordination complexesAdvanced Condensed Matter Physics

Synthesis and structural characterisation of hexakis(triphenyl phosphine)hexagold(2+) nitrate, [Au6(PPh3)6][NO3]2, and related clusters with edgesharing bitetrahedral geometries

Clive E. Briant、Kevin P. Hall、D. Michael P. Mingos 等 4 位作者1986-01-01Journal of the Chemical Society Dalton Transactions

[Au6(PPh3)6][NO3]2 has been synthesised in low yield from [Au8(PPh3)8][NO3]2 and K[Ag(CN)2] and characterised by a single-crystal X-ray diffraction study. The compound crystallises as [Au6(PPh3)6][NO3]2·3CH2Cl2 in the monoclinic space group P21/a with four formula units in a cell of dimensions a= 25.674(5), b= 15.843(…

Organometallic Complex Synthesis and CatalysisNanocluster Synthesis and ApplicationsInorganic Chemistry and Materials

Tris(o-phenylenedioxy)cyclotriphosphazene: the clathration-induced monoclinic to hexagonal solid-state transition

Harry R. Allcock、Michael Levin、Robert R. Whittle1986-01-01Inorganic Chemistry

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTTris(o-phenylenedioxy)cyclotriphosphazene: the clathration-induced monoclinic to hexagonal solid-state transitionHarry R. Allcock, Michael L. Levin, and Robert R. WhittleCite this: Inorg. Chem. 1986, 25, 1, 41–47Publication Date (Print):January 1, 1986Publication History Pub…

Synthesis and Properties of Aromatic CompoundsFlame retardant materials and propertiesThermal and Kinetic Analysis

Studies on clathrasils. IX*

作者信息未提供1986-01-01Zeitschrift für Kristallographie - Crystalline Materials

Abstract Deca-dodecasil 3R, 120 SiO 2 · 6M 10 · 9M 12 · 6M 19 with M 12 = N 2 and M 19 = C 10 NH 17 (1-aminoadamantane), crystallizes in space group R [unk] m with a = 13.860(3) Å and c = 40.891(8) Å. Its crystal structure is built by corner-sharing [SiO 4 ] tetrahedra. The tetrahedra are connected to pseudohexagonal…

Metal-Organic Frameworks: Synthesis and ApplicationsMesoporous Materials and CatalysisSupramolecular Self-Assembly in Materials

Electrochemical generation of an iron(IV) porphyrin

John T. Groves、John A. Gilbert1986-01-01Inorganic Chemistry

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTElectrochemical generation of an iron(IV) porphyrinJohn T. Groves and John A. GilbertCite this: Inorg. Chem. 1986, 25, 2, 123–125Publication Date (Print):January 1, 1986Publication History Published online1 May 2002Published inissue 1 January 1986https://pubs.acs.org/doi/10.…

Porphyrin and Phthalocyanine ChemistrySurface Chemistry and Catalysis

On the identification of molybdophosphate complexes in aqueous solution

J.A.R. van Veen、Olof Sudmeijer、Cornelis A. Emeis 等 4 位作者1986-01-01Journal of the Chemical Society Dalton Transactions

Aqueous solutions containing sodium phosphate and sodium molybdate ([P]= 0.01–0.07 mol l–1[Mo] : [P]= 1.25–15) were acidified with concentrated HCl and the formation of molybdophosphate anions was followed by 31P n.m.r. spectroscopy with a view to establishing this technique as an easily applicable method for the iden…

Metal-Organic Frameworks: Synthesis and ApplicationsPolyoxometalates: Synthesis and ApplicationsChemical Synthesis and Characterization

Development of high strength low alloy steels for marine applications: Part 1: Results of long term exposure tests on commercially available and experimental steels

F. Blekkenhorst、G. Ferrari、C. J. van der Wekken 等 4 位作者1986-01-01British Corrosion Journal

High strength low alloy (HSLA) steels, both commercially available and experimentally prepared, were immersed at 45 and 90 m depths in the North Sea for periods ranging from 1·6 to 7·2 years. General corrosion, pitting corrosion, and crevice corrosion behaviour were evaluated after immersion. The influence of alloying…

Corrosion Behavior and InhibitionHydrogen embrittlement and corrosion behaviors in metalsNon-Destructive Testing Techniques

Small-Angle X-Ray and Neutron Scattering

D. G. LeGrand1986-01-01Materials Characterization

Abstract This article presents the experimental and theoretical aspects of small-angle scattering, and discusses specific applications used in the characterization of metals, glasses, polymers, and ceramics. The basic methods of collimating x-rays, the cause of smearing from a line source, desmearing parameters, and t…

Metallic Glasses and Amorphous AlloysCultural Heritage Materials AnalysisX-ray Diffraction in Crystallography

Nondegradative Preparation of Amorphous Cellulose

Leland R. Schroeder、Victor M. Gentile、Rajai H. Atalla1986-01-01Journal of Wood Chemistry and Technology

Amorphous (noncrystalline) cellulose was prepared by dissolving cotton hydrocellulose in the dimethylsulfoxlde-paraformalde-hyde solvent system and regenerating the cellulose by slow addition of the resultant raethylol cellulose solution to stirred 0.2M sodium alkoxide in methanol :2-propanol (1:1 vol.). The regenerat…

Biofuel production and bioconversionAdvanced Cellulose Research StudiesLignin and Wood Chemistry

Permeability and Pore Structure of Cement Pastes Containing Fly Ash, Slag, and Silica Fume

R.D. Hooton1986-01-01OpenAlex

As part of research to develop a highly durable concrete container for radioactive waste disposal in chloride and sulfate bearing granite groundwaters, a variety of cement pastes were studied. A sulfate resisting portland cement was used with various replacement levels of Class F fly ash and pelletized blast furnace s…

Concrete and Cement Materials ResearchGlass properties and applicationsRecycling and utilization of industrial and municipal waste in materials production

Effect of Plastic Deformation Modes on Tensile Properties of Beta Titanium Alloys

Shuji Hanada、T. Yoshio、Osamu Izumi1986-01-01Transactions of the Japan Institute of Metals

The tensile properties of β phase Ti–V, Ti–Mo and Ti–Nb polycrystals with various compositions were investigated at 300 and 77 K, and they were related to plastic deformation modes determined by optical and transmission electron microscopy. The stress-induced ω phase transformation occurs in {332}〈113〉 mechanical twin…

Microstructure and Mechanical Properties of SteelsHydrogen embrittlement and corrosion behaviors in metalsTitanium Alloys Microstructure and Properties

Rhombohedral crystal structure of compounds containing boron-rich icosahedra

B. Morosin、A.W. Mullendore、David Emin 等 4 位作者1986-01-01AIP conference proceedings

The crystal structures of several icosahedral boron containing compounds have been refined using Mo Kα intensity data. Though these compounds, α‐boron, boron carbide, boron phosphide and boron arsenide, differ chemically, all have the same basic rhombohedral structure. The structures consist of icosahedral units bonde…

Boron and Carbon Nanomaterials ResearchBoron Compounds in ChemistryIon-surface interactions and analysis

Asymmetric synthesis of helical metallocenes

Anantha R. Sudhakar、Thomas J. Katz1986-01-01Journal of the American Chemical Society

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTAsymmetric synthesis of helical metallocenesAnantha. Sudhakar and Thomas J. KatzCite this: J. Am. Chem. Soc. 1986, 108, 1, 179–181Publication Date (Print):January 1, 1986Publication History Published online1 May 2002Published inissue 1 January 1986https://pubs.acs.org/doi/10…

DNA and Nucleic Acid ChemistryHydrogen Storage and MaterialsElectron and X-Ray Spectroscopy Techniques

Polyetherimides. II. High‐temperature solution polymerization

T. Takekoshi、J. E. Kochanowski、J. S. Manello 等 4 位作者1986-01-01Journal of Polymer Science Polymer Symposia

Abstract The polymerization and characterization of the ether‐containing aromatic polyimides of the following general structure are presented. magnified image The polymerization was conducted in one step in homogeneous solution of m‐cresol at high temperatures. Typical polyeterimides (PEI) were noncrystalline and show…

Synthesis and properties of polymersThermal and Kinetic AnalysisSilicone and Siloxane Chemistry