How To Use Halide In A Sentence
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Many elements form fluorides, however, that cannot be labeled covalent or ionic; these halides exhibit the characteristics of polymeric compounds.
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In a similar way, both hydroxide ions and water molecules may act as nucleophiles by reacting with alkyl halides to produce alcohols.
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Dissolving alkyl halides at low temperature in hydrogen fluoride-antimon pentafluoride (HF-SbF5), which is
Press Release: The 1994 Nobel Prize in Chemistry
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Many alkyl halides, alcohols, or alkenes can be reacted with benzene in the presence of certain catalysts to give an alkyl benzene.
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Except sunlight, which pours on the artificial reef in a steady burst of halide energy.
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These groups are the silicate minerals, carbonate minerals, oxides, sulfides, and halides.
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High-purity uranium can be prepared by the thermal decomposition of uranium halides on a hot filament.
Uranium
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In almost every case the electronic ballast ensures the highest mean lumens per watt, both by inherent efficiency and, in the case of metal halide lamps, by better lamp power management.
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A few minutes later, the first row of metal halides flickered to life.
Miracles, Inc.
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In almost every case the electronic ballast ensures the highest mean lumens per watt, both by inherent efficiency and, in the case of metal halide lamps, by better lamp power management.
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Two men discovered that in the presence of Lewis acids (such as aluminum chloride or ferric chloride), alkyl halides will alkylate benzenes.
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The silver halide crystals in a photographic emulsion are not perfect.
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The titanium complex selectively extracts a halogen from an organohalide such as PhBr or CyBr (where Ph is phenyl and Cy is cyclohexyl) to generate carbon-centered radicals that P4 readily traps.
R&D Mag - News
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The group III and IV elements (boron, aluminum, gallium, indium, carbon, silicon, germanium, tin), on the other hand, tend to form covalent halides.
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When the shutter of your camera opens for that fraction of a second, photons of light stream in and strike the silver halide grains suspended in the gelatin emulsion.
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All the halogen is obtained with the washing liquid in the form of sodium halide, all the sulphur in the form of sulphuric acid.
Fritz Pregl - Nobel Lecture
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Two semesters of organic chemistry later, I decided that medicine is best left to those that don't mix up alkyl halide reactions.
Lesley Ryder: After Hamilton, Chasing a Dream
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The halides are a group of minerals whose principle chemical constituents are fluorine, chlorine, iodine, and bromine.
Composition of rocks
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When a halogen combines with another element, the resulting compound is called a halide.
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One- and two-photon excitation of halide anions in polar molecular solvents results in electron detachment from the dissociative charge-transfer-to-solvent state.
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Many alkyl halides, alcohols, or alkenes can be reacted with benzene in the presence of certain catalysts to give an alkyl benzene.
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The oxides, hydrides, and halides are volatile covalent compounds that have low melting points.
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The chemical reactivity of titanium to the halides is similarly exhibited by its combination with their acids.
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Tertiary amines are manufactured by heating an alcoholic solution of ammonia with excess alkyl halide.
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The methyl halide can be produced by reacting methanol with phosphorous halides, hydrogen halides, or, in the case of methyl chloride, thionyl chloride.
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The halides all contain halogen elements, such as chlorine and fluorine.
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When light strikes the film the silver halide decomposes to give silver.
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Black and white photographic emulsions are composed of layers of silver halide crystals, with additional small amounts of various sensitizing agents, suspended in gelatin.
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This paper repots the N-alkylation of Saccharin with alkyl halide under microwave irradiation by using solid reagents as a supporter.
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The process of 'seeing' with X-rays was clearly more difficult to apply to such systems than my early reading of Bragg had suggested; it was with some hesitation that I began my first piece of research work with H.M. Powell on thallium dialkyl halides, substances remote from, yet curiously connected with, my later subjects for research.
Nobel Lecture The X-Ray Analysis Of Complicated Molecules
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Such lamps have two electrodes in a ceramic tube that contains small amounts of mercury and metal-halide salts.
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After processing in this bath, the film is clear where the developed silver was and white where the remaining silver halide is.
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* Lead halide as radiant agent in high density discharge lamps for professional reprography applications.
Purchasing - Top Stories
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The methyl halide can be produced by reacting methanol with phosphorous halides, hydrogen halides, or, in the case of methyl chloride, thionyl chloride.
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When the shutter of your camera opens for that fraction of a second, photons of light stream in and strike the silver halide grains suspended in the gelatin emulsion.
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Couple this with the hypothesis that freshwater melt from Greenland pouring into the Davis Strait dilutes the salinity of the Gulf Stream, which could turn off the Halide (salt) conveyer and turn off the Gulf Stream.
Man made global warming? No way!
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Grignard had discovered that organic halides can form compounds with magnesium.
The Nobel Prize in Chemistry: The Development of Modern Chemistry
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In covalent halides, such as carbon tetrachloride, the bonding electrons are localized in the carbon-chlorine bonds of the individual molecules.
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Which indubitably indicate that the bismuthous sulfide can only dissolve in halogen acid except hydrofluoric acid, the mixed solution of dilute sulfuric acid and alkali halide.
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Metal halide lamps were used to provide artificial lighting.
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These groups are the silicate minerals, carbonate minerals, oxides, sulfides, and halides.
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All carbocations are strong alkylating agents with a high affinity for groups which donate or share their electrons, such as halide ions, hydroxyl anions and amines.
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It is not possible to overdevelop, and it is important to completely develop the remaining silver halide.
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During the shutter's brief click, silver-halide crystals on the unexposed film record the varying levels of light in the scene being photographed.
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These specific environments include anhydrous methanol/halide solutions, nitrogen tetroxide, and liquid or solid cadmium.
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To safely pass thru the British checkpoints in Istanbul, they disguised themselves as a hoca a religion teacher, pronounced hodja and his wife with Halide covering her face and hiding away her manicured fingers.
Archive 2006-12-01
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Superacid catalysts developed at the Institute permit oxidative condensation of methane to higher hydrocarbons, as well as the selective electrophilic conversion of methane to its mono-substituted derivatives such as methyl halides and methyl alcohol.
Hydrocarbons for the 21st Century - The Work of the Loker Hydrocarbon Research Institute
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On the positive side, standard metal halide offers high lumens per watt,, and fairly long life, both of which are important to building operators.
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The company is talking about using it for specialized applications: The result is a lamp that produces exceptionally high light output and 'collimated' or very focused white light at a much lower cost than current high pressure metal halide sources.
New Lighting Technology?
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When the shutter of your camera opens for that fraction of a second, photons of light stream in and strike the silver halide grains suspended in the gelatin emulsion.
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The function of pyrazolone derivative in silver halide photographic paper is as a filter to prevent halation and irradiation.
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Uranium can be prepared by reducing uranium halides with alkali or alkaline earth metals or by reducing uranium oxides by calcium, aluminum, or carbon at high temperatures.
Uranium
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However, the products obtained from reactions with halides can be rather surprising - ie the dithiadiazole can trap free radical intermediates.
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Metal halides have the added advantage of producing a warm, natural light.
WHY is the FOUL POLE FAIR?
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For instance, electronegativities in the halide sequence fluorine, chlorine, bromine, and iodine decrease from fluorine through iodine.
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Superacid catalysts developed at the Institute permit oxidative condensation of methane to higher hydrocarbons, as well as the selective electrophilic conversion of methane to its mono-substituted derivatives such as methyl halides and methyl alcohol.
Hydrocarbons for the 21st Century - The Work of the Loker Hydrocarbon Research Institute
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This article introduces the gas discharge lamps, such as fluorescence lamp, high pressure sodium lamp and metal halide lamp, and their basic requirements to the electronic ballast.
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The acetylides are also strong bases and in reactions with secondary or tertiary alkyl halides elimination reactions can occur instead.
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The oxides, hydrides, and halides are volatile covalent compounds that have low melting points.
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Metallic cerium is prepared by metallothermic reduction techniques, such as by reducing cerous fluoride with calcium, or by electrolysis of molten cerous chloride or other cerous halides.
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These groups are the silicate minerals, carbonate minerals, oxides, sulfides, and halides.
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This she began for part II Chemistry, working with H.M. Powell, as his first research student on thallium dialkyl halides, after a brief summer visit to Professor Victor Goldschmidt's laboratory in
Dorothy Crowfoot Hodgkin - Biography
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In elimination reactions, larger molecules expel smaller molecules like water, hydrogen halides, carbon dioxide and other diatomic gases to form new substances.
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The team produced a version of the mineral in which silver is replaced by lithium, germanium by phosphorus, and some of the sulphur atoms by halides (chloride, bromide or iodide), resulting in argyrodite-like structures.
Batteries that never needs recharging
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The chemical elements are grouped into sets in the periodic table (such as halides and alkali metals) based on the chemical behavior they have in common.
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But methyl bromide and methyl chloride, unlike the CFCs in halides have both human and natural sources.
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Many alkyl halides, alcohols, or alkenes can be reacted with benzene in the presence of certain catalysts to give an alkyl benzene.
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Other photographic emulsions may use other silver halides; for example silver chloride is used for any photography using infrared light.
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Lead halide as radiant agent in high density discharge lamps for professional reprography applications.
Purchasing - Top Stories
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Silver halide is manufactured by combining silver nitrate and halide salts (chloride, bromide, and iodide) which results in a range of crystal shapes and sizes.
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The team produced a version of the mineral in which silver is replaced by lithium, germanium by phosphorus, and some of the sulphur atoms by halides (chloride, bromide or iodide), resulting in argyrodite-like structures.
Batteries that never needs recharging
