OXYGEN COMPOUNDS - Storming Media

Halogen Oxygen Interactions and Disorder Modes in Pressure Frozen Complexes of 1,2-Dihaloperfluoroethanes with 1,4-Dioxane (Preprint)

17 MAY 2007

17 pages

Authors: Anna Olejniczak; Andrzej Katrusiak; ADAM MICKIEWICZ UNIV POZNAN (POLAND)

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1,2-Diiodo-, 1,2-dibromo- and 1-bromo-2-iodoperfluoroethanes in 1:1 mixtures with 1,4-dioxane were pressure frozen in a diamond-anvil cell. Structures of cocrystal of 1,2-diiodoperfluoroethane: 1,4-dioxane at 0.30(5) GPa/296(2) K and of 1-bromo-2-iodoperfluoroethane: 1,4-dioxane at 0.62(5) GPa/296 K were determined by single-crystal X-ray diffraction. Also the single-crystal of 1,4-dioxane separated from 1,2-dibromoperfluoroethane, which remained liquid, was investigated at 0.42 GPa/296 K. The cocrystal of ICF2CF2I:C4H8O2 and the 1,4-dioxane crystals are isostructural with their phases ...

Dynamics of O(3P) Reactions with Gaseous, Liquid, and Solid Hydrocarbons

10 NOV 2004

36 pages

Authors: William L. Hase; WAYNE STATE UNIV DETROIT MI DEPT OF COMPUTER SCIENCE

This final report describes the initial two phases of the overall project. In the first phase, accurate barriers and energetics were calculated for 7 reactions involved in O(3P) oxidation of hydrocarbons. This was done by MRCI/CASSCF ab initio calculations with cc-pVTZ and cc-pVQZ basis sets and extrapolation to the complete basis set limit. For collisions of high- energy O(3P) atoms with hydrocarbons, the radical products contain sufficient internal energy to ...

Hyperthermal Reactions of O+(4S3/2) with CD4 and CH4: Theory and Experiment

24 JUL 2004

13 pages

Authors: Dale J. Levandier; Yu-Hui Chiu; Rainer A. Dressler; Lipeng Sun; George C. Schatz; AIR FORCE RESEARCH LAB HANSCOM AFB MA SPACE VEHICLES DIRECTORATE

Theoretical and experimental methods are applied to the study of the reaction dynamics in hyperthermal collisions of 0+(4S3/2) with methane. Measurements of the absolute reaction cross sections for the interaction of 0+ with CD4 and CH4 were obtained at collision energies in the range from near-thermal to approximately 15 eV, using the guided-ion beam (GIB) technique. Product recoil velocity distributions, using the GIB time-of-flight (TOF) methods, were determined for several ...

Development and Validation of 1.3 ATA PO2-in-He Decompression Tables for the MK 16 MOD 1 UBA

30 AUG 2002

419 pages

Authors: Wayne A. Gerth; Thomas M. Johnson; NAVY EXPERIMENTAL DIVING UNIT PANAMA CITY FL

The Navy Experimental Diving Unit (NEDU) was tasked by PMS-EOD to develop and validate repetitive helium-oxygen (He-O2) decompression tables for use with the MK 16 MOD 1 Underwater Breathing Apparatus (UBA). The present report provides details of the work that was completed to meet this tasking and produce the tables published in NEDU Technical Report 14-01. The report includes a description of the probabilistic model used as the basis for ...

The Ozonizer Discharge as a Gas-Phase Advanced Oxidation Process

26 OCT 1997

8 pages

Authors: Louis A. Rosocha; LOS ALAMOS NATIONAL LAB NM

Ozonizers have been used for over a century in water treatment and for about two decades in advanced oxidation. Ozonizers are fundamentally based on non-thermal plasmas, which are useful for generating reactive species (free radicals) in gas streams. Because radical-attack reaction rate constants are very large for many chemical species, entrained pollutants are readily decomposed by these radicals. Non-thermal plasmas can generate both oxidative and reductive radicals; therefore, they show ...

Seasonal and Diurnal Variations in SAR Signatures of Landfast Sea Ice.

MAY 1992

Authors: D. G. Barber; E. F. Ledrew; D. G. Flett; M. Shokr; J. Falkingham; WATERLOO UNIV (ONTARIO)

The full text of this report is not available and therefore is not for sale. This information is provided for reference purposes only.

Evaluation of LEH/LR16 Artificial Blood Formulation

MAR 92

10 pages

Authors: Thomas G. Burke; A. E. Staubus; OHIO STATE UNIV COLUMBUS COLL OF PHARMACY

Nine new LR16 analogues have been synthesized in sufficient amounts to allow for their characterization as modulators of the oxygen affinity of liposome-encapsulated hemoglobin. Among the compounds are nitro-substituted, sulfur-substituted, fluoro-substituted, and quaternized or permanently-charged analogues of LR16. These compounds have not been synthesized previously and thus it will be of interest to evaluate their ability to modulate the oxygen binding affinities of hemoglobin.

Synthesis and Structural Characterization of New High-Valent Inorganic Fluorine Compounds and their Oxidizing Properties. Volume 3

FEB 92

Authors: G. J. Schrobilgen; MCMASTER UNIV HAMILTON (ONTARIO) DEPT OF CHEMISTRY

Noble gas fluorine oxidizers of Neon, Krypton, Argon, and Xenon have been synthesized and characterized. KrF(+) and XeF(+) cations have been made with neutral organic bases. Kr-N and Kr-O bonded molecules are also synthesized and characterized. The hypervalent compounds ClFsub6(-) and XeFsub5(-) are made. The anions IFsub6O(-), TeFsub6O(2-), TeFsub7(-) and TeFsub8(2-) anions are also made. Proof that the ClFsub6(-) anion exists is also presented. The photoelectron spectra of XeFsub2, XeFsub4, ...

Synthesis and Structural Characterization of New High-Valent Inorganic Fluorine Compounds and their Oxidizing Properties. Volume 2

FEB 92

Authors: G. J. Schrobilgen; MCMASTER UNIV HAMILTON (ONTARIO) DEPT OF CHEMISTRY

Synthesis and Structural Characterization of New High-Valent Inorganic Fluorine Compounds and their Oxidizing Properties. Volume 1

FEB 92

Authors: G. J. Schrobilgen; MCMASTER UNIV HAMILTON (ONTARIO) DEPT OF CHEMISTRY

Dynamic Interpolation and Application to Flight Control.

JUL 1991

Authors: J. W. JACKSON; P. E. Crouch

Modeling Error Bounds for Flexible Structures with Application to Robust Control.

MAY 1991

Authors: Y. Chait; MASSACHUSETTS UNIV AMHERST DEPT OF MECHANICAL ENGINEERING

Free Radicals Accelerate the Decay of Long-Term Potentiation in Field CA1 of Guinea-Pig Hippocampus

Jan-1991

8 pages

Authors: T C Pellmar; G E Hollinden; J M Sarvey; ARMED FORCES RADIOBIOLOGY RESEARCH INST BETHESDA MD

Long-term potentiation (LTP) is a persistent increase in monosynaptic efficacy following a high frequency train. Because the potentiation can last for hours or even days in vivo, this electrophysiological phenomenon has been considered to be a correlate of memory and learning. The biochemical changes that underlie LTP are complex, possibly involving a number of second messenger systems. Free radicals and active oxygen compounds (e.g. peroxide, superoxide and hydroxyl radicals) are ...

Production of Jet Fuels from Coal Derived Liquids. Vol 16. Analysis of Phenolic Species in Coal Derived Aviation Fuels

JUN 90

Authors: F. D. Guffey; D. E. Hunter; UNIVERSITY OF WYOMING RESEARCH CORP LARAMIE WESTERN RESEARCH INST

Samples of jet fuel (JP-4, JP-8, JP-8X) produced from the liquid by- products of the gasification of lignite coal from the Great Plains Gasification Plant were analyzed to determine the quantity and type of organo-oxygen compounds present. Large quantities of oxygen compounds were found in the coal derived liquids and were removed in the refining process. Trace quantities of organo-oxygenate compounds were suspected to be present in the refined fuels. ...

Production of Jet Fuels from Coal-Derived Liquids. Volume 14. Oxygenates Content of Coal-Derived Jet Fuels

JUN 90

Authors: C. L. Knudson; NORTH DAKOTA UNIV GRAND FORKS ENERGY RESEARCH CENTER

Samples of jet fuel (JP-4, JP-8, JP-8X) produced from the liquid by- products of the gasification of lignite coal from the Great Plains Gasification Plant were analyzed to determine the quantity and type of organo-oxygen compounds present. Results were compared to similar fuel samples produced from petroleum. Large quantities of oxygen compounds were found in the coal-derived liquids and were removed in the refining process. Trace quantities of organo- oxygenate ...

Production of Jet Fuels from Coal-Derived Liquids. Volume 15. Thermal Stability of Coal-Derived Jet Fuels

JUN 90

Authors: Semih Eser; Chunshan Song; Ronald M. Copenhaver; Janice Perison; Harold H. Schobert; PENNSYLVANIA STATE UNIV UNIVERSITY PARK DEPT OF MATERIALS SCIENCE AND ENGINEE RING

Samples of jet fuel (JP-4, JP-8, JP-8X) produced from the liquid by- products of the gasification of lignite coal from the Great Plains Gasification Plant were analyzed to determine the quantity and type of organo-oxygen compounds present. Results were compared to similar fuel samples produced from petroleum. Large quantities of oxygen compounds were found in the coal derived liquids and were removed in the refining process. Trace quantities of organo- ...

A Novel Synthetic Route to 2-Halo-3, 4-Dicyanopyridines

MAR 90

Authors: Ju-Yeon Lee; H. K. Hall Jr; ARIZONA UNIV TUCSON DEPT OF CHEMISTRY

Two-Bromo-3,4-dicyanopyridine 2 was obtained in moderate yield by reacting 1,1,2,2-tetracyano-3-trimethylsiloxycyclobutane 1 with phosphorus tribromide. Similarly, reaction of 1 with chlorinating reagents such as thionyl chloride and oxalyl chloride led to the corresponding 2-chloro-3, 4- dicyanopyridine 3 in 40% yield. A reaction mechanism is suggested. (AW)

Synthesis and Electrochemistry of 2,2'-Bipyridyl Complexes of Dioxorhenium(V). Revision

AUG 89

Authors: M. S. Ram; Christopher S. Johnson; Robert L. Blackbourn; Joseph T. Hupp; NORTHWESTERN UNIV EVANSTON IL DEPT OF CHEMISTRY

The rhenium(V) bipyridyl(bpy) complexes (BPY) (PY)2Re(O)2CLO4 and (bpy) (3 - pySO3)2Re(O)2(Na).2H2O have been prepared by reaction of 2,2' - bipyridine with trans -(PY)4Re(O)2CL and trans-(3-PYSO3)4Re(O)2 (Na)3 in methanol or methanol/water solutions (py = pyridine, 3-pySO3 = 3 pyridinesulfonate). Despite the seemingly trivial change in coordination environment the bpy-containing complexes were found to behave very differently than the corresponding tetrapyridyl complexes. For example, the pH-independent formal potential for reduction of Re ...

Y-Si-Al-O-N Glass Fibers

MAY 89

Authors: Donald R. Messier; Robert P. Gleisner; Ronald E. Rich; ARMY LAB COMMAND WATERTOWN MA MATERIAL TECHNOLOGY LAB

The excellent mechanical properties and outstanding water corrosion resistance of Y-Si-Al-O-N glasses indicate that they are attractive candidate materials for forming into high performance glass fibers. Fibers of glasses containing, respectively,3.2 and 6.6 wt% N were drawn freehand in air, and from glass rods in N2. Continuous fibers (100-m long) of the former glass were melt- drawn in N2 while being wound in air outside of the glass-melting furnace. Some ...

Fundamental Studies of Carbon, NH, and Oxygen Rings and Other High Energy Density Molecular Systems

30 AUG 88

Authors: Henry F. Schaefer III; CALIFORNIA UNIV BERKELEY

The development of efficient and safe conventional (i.e., nonnuclear) propellants and/or fuels is a goal of obvious technological significance. A desirable quality of such a propellant is clearly a high ratio of energy release to mass. The present hypothesis rests on a simple, but previously unrecognized, analogy between oxygen and sulfur. Preliminary studies showed that the oxygen ring systems are sufficiently promising to warrant the detailed, high-level theoretical research reported ...

West Germans Lobby for Tank-Detector Sensors.

FEB 1988

Authors: J. Kreidl

The Radiation Sensitivity of Select Metal Chelate Polymers: Mechanistic Changes at Higher Energies

01 APR 87

Authors: Ronald D. Archer; MASSACHUSETTS INST OF TECH CAMBRIDGE DEPT OF CHEMISTRY

Response times (RT) in a series of computer-administered questionnaires were collected in two continous operation time-shifted studies to evaluate how useful these measures might be in various research areas. These studies involved exericising and non-exercising subjects at two start-of-day times (noon, midnight). Thirty subjects were tested over two continous workdays (CW1 and CW2) of 20hrs each with a three hr nap allowed between days. The scales analyzed were the vigor ...

Cationic Polymerizations of 1,3,,6-Trioxocane and 2-Butyl-1,3,6- Trioxocane

01 OCT 86

Authors: James C. Chien; Baobei Xu; C. P. Lillya; MASSACHUSETTS UNIV AMHERST DEPT OF POLYMER SCIENCE AND ENGINEERING

The polymerization of 1,3,6-trioxocane (TOC) has been reinvestigated. The reaction occurs without an introduction period to give high MW linear polymers. The degree of polymerization is not independent of conversion. Polymers having M sub n as high as 81,000 and M sub w/M sub n approx. 1.4 and with very strong mechanical strength can be obtained. These results contrast with earlier reports of long induction periods and products with M ...

Electronic Structure of Pentavalent Phosphorus

OCT 86

Authors: Andrew Streitwieser Jr; CALIFORNIA UNIV BERKELEY DEPT OF CHEMISTRY

The goal of this research is to provide increased understanding of the chemistry and reactivity of pentavalent phosphorus compounds by analysis of structures and electronic structures obtained from ab initio molecular orbital calculations. Electronic structure results were obtained by study of integrated electron density functions. To facilitate potential applications to the chemistry of known fluorophosphonate nerve gases computational emphasis was placed on oxygen and fluorine substituents and on the nature ...

Isocyanates from Oxalyl Chloride and Amines.

25 AUG 1986

Authors: Maria A. Geigel; Chester W. Marynowski; DEPARTMENT OF THE ARMY WASHINGTON DC

The process of this invention for preparing isocyanates is a one-step process comprising heating an amine or an amine hydrochloride salt with excess oxalyl chloride (OxCl) in a high boiling point solvent from about 80 C-180 C for a reaction time of about 0.5-2 hours. An appropriate high boiling point solvent is selected from o-dichlorobenzene (DCB) and decahydronaphthalene (Decalin). After forming the isocyanate, the excess oxalyl chloride and solvent are ...

Development of Control Laws for a Flight Test Maneuver Autopilot.

AUG 1986

Authors: G. S. Alag; E. L. Duke; NATIONAL AERONAUTICS AND SPACE ADMINISTRATION EDWARDS CA DRYDEN FLIGHT RESEARCH CENTER

An autopilot can be used to provide precise control to meet the demanding requirements of flight research maneuvers with high-performance aircraft. This paper presents the development of control laws within the context of flight test maneuver requirements. The control laws are developed using eigensystem assignment and command-generator tracking. The eigenvalues and eigenvectors are chosen to provide the necessary handling qualities, while the command-generator tracking enables the tracking of a specified ...

Characterization of Ultra Thin Polyimide Films (d approx. 11A) Formed by Vapour Deposition of 4,4-Oxidianiline and 1,2,3,5 Benzenetetracarboxylic Anhydride

07 JUN 86

Authors: M. Grunze; R. N. Lamb; MAINE UNIV AT ORONO LAB FOR SURFACE SCIENCE AND TECHNOLOGY

The popularity of polyimides in, for example, packaging and dielectrics in electronic devices, stem from their favorable physical properties (eg. thermal stability, moisture resistance) and their ease of application (spin coating). The formation of ultra thin polymer films on a bulk metal surface has been achieved by the controlled vapour deposition of the polymer precursors (4, 4-Oxydianiline(ODA) and 1,2,3,5 Benezenetetracarboxylic Anhydride (PMDA)) on a polycrystalline silver substrate and the subsequent ...

Preparation and Adhesion of Ultra Thin Polyimide Films on Polycrystalline Silver

07 JUN 86

Authors: M. Grunze; R. N. Lamb; MAINE UNIV AT ORONO LAB FOR SURFACE SCIENCE AND TECHNOLOGY

4.4-Oxydianiline (ODA) and 1,2,3,5 Benzenetetracarboxylic Anhydride (PMDA) from the vapor phase were deposited onto a polycrystalline silver substrate and followed the polymerization of the two components to form ultra- thin polyimide films (d approx. 11A) by X-ray photoelectron spectroscopy. Both PMDA and ODA chemisorb on the clean surface under partial fragmentation. Co- deposition of ODA and PMDA followed by heating of the substrate led to formation of thermally stable (T ...

An Experimental Evaluation of the Effects of Selected Organic Compounds on the Formation of Insolubles in Diesel Fuels

NOV 85

Authors: John G. Zimmerman; ZIMMERMAN (JOHN G) ANNAPOLIS MD

The study documents and interrelates five experimental programs conducted by the David Taylor Naval Ship Research and Development Center in- house and under contract. The programs were designed to increase understanding of the effects of eleven selected heterocompounds on the stability of diesel- range fuels. The programs employed any or all of four different stability tests ranging from an oven test conducted at 150 F (65.6) for periods up to ...

Gas Phase Ion-Molecule Chemistry of Carbon, Nitrogen and Oxygen Compounds

29 JAN 85

Authors: C. H. DePuy; V. M. Bierbaum; COLORADO UNIV AT BOULDER DEPT OF CHEMISTRY

The gas phase reaction of nitrogen, silicon, sulfur and phosphorous organic compounds with anions have been investigated using the flowing afterglow technique. Studies have been made which compare mechanisms by which first and second row elements react with anions. New methods for the generation of specific anions in the gas phase have been developed. A variety of new types of gas phase ions (PH2(-), R5Si(-), C3H2NO2(-), etc.) have been prepared ...

Spectroscopic Studies of the Products of the Reactions of Excited Noble- Gas Atoms

29 JUN 1983

Authors: M. F. Golde; PITTSBURGH UNIV PA DEPT OF CHEMISTRY

The products of the very rapid reactions of electronically-excited Ar, Kr and Xe atoms with several oxygen-, hydrogen- and halogen-containing compounds have been investigated using the saturation ion-current technique and emission and atomic resonance fluorescence spectroscopy in discharge-flow systems. New insight has been obtained into the mechanisms of the channels leading to chemiionization and noble-gas halide formation. Energy transfer leading to molecular dissociation is the major and often the dominant ...

Worldwide Report, Law of the Sea, No. 217

21 JAN 83

Authors: JOINT PUBLICATIONS RESEARCH SERVICE ARLINGTON VA

This Worldwide Report contains articles on Law of the Sea.

Predictions of Multipath Levels for Air-to-Air ECM-Resistant Communication Systems.

AUG 1982

Authors: D. P. Koester; UNIDENTIFIED SOURCE

This paper presents the results of an investigation of the relative levels of reflected energy due to ground multipath propagation in Direct Sequence (DS) of Pseudorandom Noise (PN) modulated spread-spectrum systems. Both specularly and diffusely reflected signals were examined with parametric assessments made as a function of airborne transmitter/receiver separation range, transmitter/receiver altitudes and various terrain characteristics for a PN-modulated spread-spectrum system operating in the UHF band (225-400 MHz) with ...

Proceedings of the 1982 Army Science Conference Held at the United States Military Academy, West Point, New York on 15-18 June 1982. Volume 2. Principal authors H through N.

18 JUN 1982

Authors: DEPUTY CHIEF OF STAFF FOR RESEARCH DEVELOPMENT AND ACQUISITION (ARMY) WASHINGTON D C

These Proceedings of the 1982 Army Science Conference are a compilation of all papers presented at the conference and the supplemental papers that were submitted. The Proceedings consist of Four Volumes, with Volumes I through III Unclassified, and Volume IV Classified.

Sea Sparrow

DEC 1981

Authors: Christian Eliot

Tactical Missile Performance Requirements a Methodology for Development.

MAY 1979

Authors: C. T. Maney; AIR FORCE ARMAMENT CENTER EGLIN AFB FL

This paper addresses the philosophy by which tactical air launched missile design requirements are developed using the development planning process used by the United States Air Force. Basically, this process consists of an analysis of the mission to be accomplished including the countering influence of the threat, a comparison of the alternative approaches to the solution, and a trade off design analysis of subsystem and system performance, effectiveness and costs. ...

Jet Engine Exhaust Analysis by Subtractive Chromatography

DEC 1978

77 pages

Authors: Joseph J. Brooks; Diana S. West; John E. Strobel; Leonard Stamper; MONSANTO RESEARCH CORP DAYTON OH

This report describes the further refinement of a method for the sampling and analysis of organics in jet engine exhaust by chemical classes. Details for the selection, construction, and evaluation of the combination sorbent (Tenax-GC/Ambersorb XE-340) sampling system are given along with the rationale and operational parameters for the subtractive chromatography system that produces the organic class analysis. The significant improvements incorporated into both the sampling and analytical systems compared ...

119 Sn-Moessbauer-Spektren von Funktionell Substituierten Stannylenen und Ihren Stannio-Komplexen mit Chrom-, Molybdaen- und Wolfram- Carbonyl-Acceptoren (119 Sn Mossbauer Spectra of Functionally Substituted Stannylenes and Their Stannio-Complexes with Ch

15 AUG 1978

Authors: Wolf-Walther DU Mont; J. L. Lefferts; J. J. Zuckerman; OKLAHOMA UNIV NORMAN DEPT OF CHEMISTRY

119 Sn-Moessbauer data for a series of base-stabilized, intermolecularly associated tin(II) compounds with O-, Cl-, P- and As- atoms bonded to the tin are compared with isomer shifts (I.S.) and quadrupole splittings (Q.S.) of their stannio-complex derivatives with Cr, Mo and W carbonyls. Coordination by the tin lone pair gives rise to a decrease in I.S. of ca. 2.1 + or - 0.2 mm/s and an increase of the Q.S.. ...

Synthesis of Organofluorine Compounds by Direct Fluorination.

JUN 1978

Authors: Richard J. Lagow; TEXAS UNIV AT AUSTIN DEPT OF CHEMISTRY

Final report of research done utilizing a fluorination technique for the synthesis of perfluorinated and polyfluorinated organic compounds. (Author)

Calculation of Atmospheric Composition in the High Latitude September Stratosphere.

MAY 1978

Authors: Harold N. Ballard; Jose M. Serna; Frank P. Hudson; ARMY ELECTRONICS RESEARCH AND DEVELOPMENT COMMAND WSMR NM ATMOSPHERIC SCIENCES LAB

Prediction of prenuclear event atmospheric composition in the 10 to 100 km region of the atmosphere is required for initial input to models of nuclear weapons effects. ANMAR (the ASL Numerical Model of Atmospheric Radiation, Composition and Dynamics) was used to generate an atmospheric composition model of the 65 deg N September stratosphere (10 to 50 km). Model results of concentrations for O(3P), O2(1 Delta), O3, NO, NO2, NO3, N2O5, ...

Requirements for Improved Infrared Prediction Capability. HAES Report Number 78.

30 APR 1978

Authors: Douglas H. Archer; MISSION RESEARCH CORP SANTA BARBARA CALIF

This report describes work performed to determine the major uncertainties involved in the prediction of infrared radiation in the 2- to 5-micrometers region following atmospheric nuclear bursts. Emphasis is placed on wavelength bands near 2.8 and 4.3 micrometers. Specifically included for consideration are the molecular species NO, CO2, CO, OH, HO2, H2O, H2O2, HNO2, HNO3, N14N15, NO(+), and N2O. A priority listing is provided of recommended research items necessary for ...

Poly(aryloxyphosphazene) Foamed Thermal Insulation.

APR 1978

Authors: Arthur H. Gerber; Thomas C. Peterson; HORIZONS RESEARCH INC CLEVELAND OHIO

Pilot plant produced sulfur curable poly(aryloxyphosphazene) rubber was formulated with fillers, stabilizers, foaming agent, activators, and curatives to prepare 121.7 square feet of fire-retardant thermal insulation foam. Foaming involved two steps, thermal pre-cure under pressure and free expansion at elevated temperature. Eleven of fourteen specification properties were easily met. Three properties, namely compression set, flame spread index, and water vapor permeability did not meet the target property guidelines. (Author)

Octa(isopropoxy)Dimolybdenum and Bis(nitrosyl)Hexa(Isopropoxy)dimolybdenum. Structure and Bonding in Compounds Containing Molybdenum Atoms with Fourteen Valence Shell Electronic Configurations.

30 NOV 1977

Authors: M. H. Chisholm; F. A. Cotton; M. W. Extine; R. L. Kelly; W. W. Reichert; PRINCETON UNIV N J DEPT OF CHEMISTRY

The compounds Mo2(OPr(i))6(NO)2, I, and Mo2(OPr(i)8, II have been structurally characterized. Each compound has rigorous inversion symmetry and virtual C2v symmetry and in each there is essentially trigonal bipyramidal coordination about each molybdenum atom.

Tungsten Oxyfluoride Photoanodes.

10 NOV 1977

Authors: C. E. Derrington; C. A. Castro; W. Godek; R. L. Sanchez; A. Wold; BROWN UNIV PROVIDENCE R I DEPT OF CHEMISTRY

The photoelectrolytic behavior of WO3-x and WO3-xFx has been investigated and both the magnitude of the photocurrents and the relative stability of the two compounds were determined. It was found that WO3-x gives a much higher photocurrent than stoichiometric WO3. The substitution of fluorine for oxygen, rather than the creation of oxygen defects, increases the stability of the electrode. There is an optimum amount of substituted fluorine which results in ...

Poly(Organonitriles).

OCT 1977

Authors: Arthur H. Gerber; James R. Cable; HORIZONS RESEARCH INC CLEVELAND OHIO

Preparation of poly(organonitriles) via a ring opening polymerization of triazine monomers is not a viable approach. A variety of substituted triazines were screened using metallic and nonmetallic catalysts at elevated temperatures. Preparation of poly(organonitriles) via anionic polymerization of organic cyanates can be controlled to produce linear low molecular weight products.

Self-Destructive Core Mold Materials for Metal Alloys.

23 AUG 1977

Authors: Khodabakhsh S. Mazdiyasni; Roger R. Wills; DEPARTMENT OF THE AIR FORCE WASHINGTON D C

In the casting of metal alloys to form hollow articles, a mold of a desired shape containing a core material fabricated to a desired configuration from a silicon yttrium or silicon lanthanide oxynitride is filled with a molten metal alloy while maintaining the mold under a vacuum or under a blanket of an inert gas after which the mold is allowed to cool slowly to room temperature. The casted metal ...

Lubricity Properties of High Temperature Jet Fuel

AUG 1977

47 pages

Authors: Lawrence Grabel; NAVAL AIR PROPULSION TEST CENTER TRENTON NJ PROPULSION TECHNOLOGY AND PROJECT ENGINEERING DEPT

The effects of fuel additives and naturally occurring fuel components and impurities on the lubricity of JP-5 were determined. The ball-on-cylinder machine was used as a lubricity tester. Naturally occurring hydrocarbon compounds had very little effect on the lubricity of JP-5. Corrosion inhibitors, organic acids and nitrogen containing compounds were found to improve lubricity while sulfur compounds, non-acid oxygen containing compounds and anti-oxidants had little or no effect on lubricity. ...

Fast-Burning Compositions of Fluorinated Polymers and Metal Powders.

28 DEC 1976

Authors: Werner F. Beckert; Ottmar H. Dengel; DEPARTMENT OF THE NAVY WASHINGTON D C

This patent discusses flammable, relatively fast-burning compositions of fuels and oxidizers, which ignite and burn readily, forming substantially non-gaseous residues. The compositions comprise certain oxygen- or fluorine-rich compounds such as perchlorates, nitrates, oxides and polytetrafluoroethylene, and certain fuels such as metal powders and metal sulfides.

Chemistry of Haloperfluoro Compounds. Reactions of Metal F-Alkoxides and Metal F-Acetates with F-2-Butyne.

JUN 1976

Authors: William T. Miller; C. J. Brookes; C. F. Lane; K. K. Sun; CORNELL UNIV ITHACA N Y DEPT OF CHEMISTRY

Methods were developed for the preparation of a variety of new carbon-oxygen-fluorine containing compounds utilizing as starting reagents metal F-alkoxides, derived from the corresponding carbonyl compound and metal fluorides, or F-acetates, and F-2-butyne. (E)-2-Bromo-3-(F-alkoxy)-F-2-butenes were prepared by the addition of silver F-alkoxides to F-2-butyne in the presence of the bromine transfer reagent 1,2-dibromotetrachlorethane. F-1,2,4,4,6,6-Hexamethyl-3, 5-dioxacyclohexene, IX, and F-3,4-dimethyl-3-penten-2-one, X, were formed by the reaction of (E)-F-1-methyl-propenylsilver with F-propanone and by ...

Primary Irritation Evaluation Program.

FEB 1976

Authors: Harvey Fisch; ARMY ENVIRONMENTAL HYGIENE AGENCY ABERDEEN PROVING GROUND MD

AI3-33515-a, AI3-36368, AI3-36404, AI3-36536, AI3-36537, AI3-36538, AI3-36540, AI3-36542, AI3-36543, AI3-36558, AI3-36559, AI3-36560, AI3-36561, AI3-36563, AI3-36564, AI3-36565, AI3-36566 and AI3-36570 were evaluated on New Zealand White rabbits for their potential to cause skin and eye irritation. The data obtained serves as a basis for making a recommendation concerning their potential use on humans. This recommendation is intended only for guidance in further entomological testing of this compound. No further testing is ...