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With Halogens

Aryl tellurium bromides and iodides can be obtained by reaction of diaryl ditellurium compounds with an equimolar amount of bromine or iodine, when the solvent is able to dissolve the starting materials but not the aryl tellurium halide. The precipitation of the aryl tellurium halide prevents it from being converted to aryl tellurium trihalides. The aryl tellurium halides thus far isolated and suitable reaction media for their preparation are listed in Table 3 (p. 240). [Pg.239]

Dupont, O. Dideberg, J. Lamotte, J.L. Piette, Acta Crystallogr., Sect. B, 35, 849 (1979). [Pg.239]

Irgolic Organic Tellurium Compounds with one Te,C Bond [Pg.240]

Starting Materials Solvent Product Yield [%] m.p. [°C] Refer- ence [Pg.240]

H3CO- Te-Te- OCH3 I2 PE or toluene 4-methoxyphenyl tellurium iodide 80 145-150 1 [Pg.240]


Alkanes also react with halogens to form substitution products. [Pg.173]

The region of high electron density between the doubly bonded carbon atoms gives alkenes an additional reactivity and in addition to burning and reacting with halogens, alkenes will add on other molecules for example ... [Pg.173]

When carbon forms four covalent bonds with halogen atoms the second quantum level on the carbon is completely filled with electrons. Most of the reactions of the Group IV tetrahalides require initial donation by a Lewis base (p. 91) (e.g. water, ammonia) which attaches initially to the tetrahalide by donation of its electron pair. Hence, although the calculated free energy of a reaction may indicate that the reaction is energetically favourable, the reaction may still not proceed. Thus we find that the tetrahalides of carbon... [Pg.195]

Numerous ionic compounds with halogens are known but a noble gas configuration can also be achieved by the formation of a covalent bond, for example in halogen molecules, X2, and hydrogen halides, HX. When the fluorine atom acquires one additional electron the second quantum level is completed, and further gain of electrons is not energetically possible under normal circumstances, i.e... [Pg.312]

Cobalt is a bluish silvery metal, exhibits ferromagnetism, and can exist in more than one crystal form it is used in alloys for special purposes. Chemically it is somewhat similar to iron when heated in air it gives the oxides C03O4 and CoO, but it is less readily attacked by dilute acids. With halogens, the cobalt(II) halides are formed, except that with fluorine the (III) fluoride, C0F3, is obtained. [Pg.401]

Aliphatic mono-halides, and aromatic hydrocarbons with halogen in side-chain, precipitate silver hdide on treatment with cold aqueous silver nitrate solution. [Pg.390]

The metal reacts directly with elemental carbon, nitrogen, boron, selenium, silicon, phosphorus, sulfur, and with halogens. [Pg.128]

Aldehydes and ketones react with halogens by substitution of one of the a hydrogens... [Pg.757]

A detector for GC that provides selectivity for solutes with halogen and nitro functional groups. [Pg.570]

Hafnium carbide is inert to most reagents at room temperature, but is dissolved by hydrofluoric acid solutions which also contain an oxidising agent. Above 250°C, hafnium carbide reacts exothermically with halogens to form hafnium tetrahaUde, and above 500°C, with oxygen to form hafnium dioxide. At higher temperatures in a flow of hydrogen, hafnium carbide slowly loses some of its carbon. [Pg.445]

At elevated temperatures, CaH2 reacts with halogens, sulfur, phosphoms, alcohols, and ammonia. At high temperatures, it reacts with refractory metal oxides and haUdes. Calcium hydride is substantially inert to organic compounds that do not contain acidic hydrogens. [Pg.298]

Reaction with Other Inorganic Halogen Compounds. Anhydrous HCl forms addition compounds at lower temperatures with halogen acids such as HBr and HI, and also with HCN. These compounds are stable at room temperature. [Pg.444]

Reaction with Halogen Nucleophiles. Hydrochloric acid [7647-01-0] hydrobromic acid [10035-10-6] and hydroiodic acid [10034-85-2] react readily with ethyleneimine (3) to give the corresponding P-halogenoethylamines (20,21). [Pg.6]

Reaction with Halogen Electrophiles. The synthesis of l-haloa2iridines, which are prone to explosion, has been carried out using hypohahtes (290,291). l-Chloroa2iridine [10165-13-6] produced in this way reacts with l-Hthiated ethyleneimine to give l,l -dia2iridine [4388-03-8]. Perchloryla2iridine [112405-46-6] has been prepared by reaction of ethyleneimine with dichlorine heptoxide at —20° C (292). [Pg.10]

Many of the common electrophilic aromatic substitution reactions can be conducted on indole. CompHcations normally arise either because of excessive reactivity or the relative instabiUty of the substitution product. This is the case with halogenation. [Pg.84]

Preparation from Nitrene Intermediates. A convenient, small-scale method for the conversion of carboxyhc acid derivatives into isocyanates involves electron sextet rearrangements, such as the ones described by Hofmann and Curtius (12). For example, treatment of ben2amide [55-21-0] with halogens leads to an A/-haloamide (2) which, in the presence of base, forms a nitrene intermediate (3). The nitrene intermediate undergoes rapid rearrangement to yield an isocyanate. Ureas can also be formed in the process if water is present (18,19). [Pg.448]

Primary and secondary phosphines can be treated with halogenating agents to produce halophosphines. [Pg.381]

Strong oxidizers and strong acids are incompatible with nikanolamines. Reactions, generating temperature and/or pressure increases, may occur with halogenated organic compounds. Alkan olamines are corrosive to copper and brass and may react. Contact with aluminum by alkan olamines, particularly when wet or at elevated temperatures (60°C), should be avoided. [Pg.9]

Meta.1 Oxides. Halogen-containing elastomers such as polychloropreae and chlorosulfonated polyethylene are cross-linked by their reaction with metal oxides, typically ziac oxide. The metal oxide reacts with halogen groups ia the polymer to produce an active iatermediate which then reacts further to produce carbon—carbon cross-links. Ziac chloride is Hberated as a by-product and it serves as an autocatalyst for this reaction. Magnesium oxide is typically used with ZnCl to control the cure rate and minimize premature cross-linking (scorch). [Pg.236]


See other pages where With Halogens is mentioned: [Pg.21]    [Pg.42]    [Pg.80]    [Pg.167]    [Pg.199]    [Pg.208]    [Pg.231]    [Pg.235]    [Pg.248]    [Pg.249]    [Pg.329]    [Pg.432]    [Pg.213]    [Pg.405]    [Pg.173]    [Pg.49]    [Pg.180]    [Pg.771]    [Pg.33]    [Pg.238]    [Pg.51]    [Pg.284]    [Pg.284]    [Pg.185]    [Pg.186]    [Pg.386]    [Pg.478]    [Pg.3]    [Pg.80]    [Pg.100]    [Pg.322]   


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Addition of halogen fluonde reactions with

Addition of halogen fluondes epoxidation with peroxytnfluoroacetic acid

Aldehydes reaction with halogens

Aldehydes, halogenation cycloaddition with

Alkali reaction with halogen molecules

Alkanes reacting with halogens

Alkanes reaction with halogens

Alkenes reaction with halogens

Alkenes with Halogen Substituents

Alkenes with Halogens

Alkenes, radical halogenation reaction with peroxides

Alkenes, radical halogenation reactivity with bromine

Alkyl halides Compounds with halogen

Alkyl halides Compounds with halogen Table

Alkyl halides Compounds with halogen ammonia

Alkyl halides Compounds with halogen elimination reaction

Alkyl halides Compounds with halogen from alcohols

Alkyl halides Compounds with halogen nucleophilic

Alkynes reactions with halogens

Alkynes with Halogens

Aluminium reaction with halogens

Arene thiolates, reaction with halogen

Aromatics with Halogenated Side Chain

Aryl halides halogen-metal exchange with

Boranes reaction with halogen

Boranes with halogens

Boronic acids reaction with halogens

Boronic esters reaction with halogen

Bromine radical halogenation with

Carbon-Halogen Bond Formation with Group 11 Metals

Chain reactions hydrogen reaction with halogens

Charge transfer complexes with halogens

Clathrates with halogens

Complexes with M-P-Halogen Bonds

Compounds with activated halogen atoms

Compounds with activated halogen groups

Conjugated compounds with halogenation

Contents 2 With Halogens

Derivatives with Halogen

Deuterium, halogen exchange with

Dihydrogen with halogens

Dimethyl sulfide halogen oxides, reactions with

Dithiocarbamates reaction with halogens

Electrically excited halogen with halogens

Electrophiles, with reactive halogen

Electrophilic additions with halogens

Ethylene with halogens

Fillers for Use in Conjunction with Halogens

Fluorine radical halogenation with

Glucal reaction with halogens

Halogen abstraction, with

Halogen acids, reaction with alcohols

Halogen atoms direct reactions with hydrogen halides

Halogen azides reactions with alkenes

Halogen compounds, reaction with alcoholic silver nitrate

Halogen compounds, reaction with alcoholic silver nitrate acetone

Halogen compounds, reaction with alkali metals

Halogen fluorides, reactions with

Halogen fluorides, reactions with radon

Halogen hydrogenation with

Halogen isocyanates reactions with alkenes

Halogen nitrates reactions with alkenes

Halogen nucleophiles, addition with

Halogen reduction with

Halogen with rearrangement

Halogen-Lithium Exchange with Organic Halides

Halogen-metal interconversions with halogenated

Halogenated Arenes and Carboxylates with Chlorine, Bromine, or Iodine Substituents

Halogenated Polyhydrocarbons with Aromatic Rings in the Backbone

Halogenation reaction with ethylenediamine

Halogenation with ascorbic acid

Halogenation with bromine vapor/solution

Halogenation with catalysts, bifunctional

Halogenation with concentrated halogen

Halogenation with concentrated halogen acids

Halogenation with iodine vapor

Halogenation with molybdenum complexes

Halogenation with radicals

Halogenation with rhenium complexes

Halogenation with silicate materials

Halogenation with sodium borohydride

Halogenation with sodium hydrosulfite

Halogenation with thiols

Halogenation with thionyl chloride

Halogenation with vanadium complexes

Halogens (Group phosphorus compounds with

Halogens (Group sulfur compounds with

Halogens Interaction with single crystals

Halogens Reactive Elements with High Electronegativity

Halogens addition reactions with

Halogens compounds with

Halogens diazo group replacement with

Halogens nitric oxide reaction with

Halogens oxyacids with

Halogens reaction with carbon

Halogens reaction with conjugated compounds

Halogens reaction with ethylene

Halogens reaction with hydrogen

Halogens reaction with metals

Halogens reaction with radicals

Halogens reaction with sulfur

Halogens reactions with a-chloroenamines

Halogens reactions with metal carbonyl

Halogens with metals

Halogens, complexation with pyridines

Halogens, incompatibilities with

Halogens, reaction with alkali metals

Halogens, reaction with lime

Halogens, reactions with metal alkoxide

Halogens, reactions with tetrahydroborates

Halogens, with alcohols

Halogens, with alcohols dioxide

Hydrocarbons reaction with halogens

Hydrocarbons, with Halogenated

Hydrocarbons, with Halogenated olefins

Hydrogen with halogen

Iminium salts reactions with halogen-substituted allylic anions

Indium halides reaction with halogens

Inter-halogen compounds, with

Iridium reactions with halogens

Isonitriles reaction with halogens

Ketones methyl, cleavage with halogens

Ketones reaction with halogens

Ketones, methyl with halogens

Lead—halogen bonds reactions with

Lithium, alkyl-: addn. to 1-alkenyl silanes halogen-metal exchange with

Mercury lamps halogen compounds with

Metal atoms with carbon-halogen bonds

Metal halides, halogenation with

Metal-halogen exchange, with

Methane reaction with halogens

Nanocomposites with Halogen and Nonintumescent Phosphorus Flame Retardant Additives

Nitrogen reaction with halogens

Olefins reaction with halogens

Organic Intermediates Functionalized with Oxygen, Nitrogen, or Halogens

Organoaluminum compounds with halogens

Osmium reactions with halogens

Oxidation of Simple Sugars with Halogens

Oxidation with Halogens

Oxidation, enzymic with halogens

Oxirane reactions with halogen acids

Oxygen halogen compounds reaction with

Ozone reaction with halogens

Phosphines halogenation with

Phosphines halogenations with

Phosphites, reactions with halogens

Photosensitization with Halogens

Poly with different halogen

Polyheteroatom Cations of Halogens with Oxygen or Nitrogen

Polymers with halogens

Possible Role of Idiosyncrasy in Hepatitis Associated with Halogenated Volatile Anaesthetics

Potassium fluoride halogen exchange reaction with

Primary alcohols reaction with halogen acids

Pyridines with halogens

REACTIONS OF HALOGEN COMPOUNDS WITH NITRIC OXIDE AND CARBON MONOXIDE

Reaction of halogen compounds with ammonia derivatives

Reaction with Electrophilic Halogen Sources

Reaction with Halogen Acids

Reaction with Halogenated Compounds

Reaction with Halogens, Acids, and Alkalis

Reaction with addition of halogen

Reaction with halogen atoms

Reaction with halogen molecules

Reaction with halogen-containing

Reaction with halogen-containing molecules

Reaction with halogenated methyl

Reaction with halogenated methyl radicals

Reaction with halogens

Reaction with other halogens halogenation

Reactions of Atomic Sodium with Halogenated Hydrocarbons

Reactions of CH4 with the Halogens

Reactions of Sulfur-Based Nucleophiles with Halogenated Aliphatics

Reactions of organometallic complexes with halogenes (SE2 mechanism)

Reactions with Halides and Halogens

Reactions with Halogen Compounds

Reactions with Halogens and Chloramines

Reactions with Halogens and Organic Halides

Reactions with elemental halogens

Reactions with halogen electrophiles

Reactions with halogens and other small molecules

Reactions with other oxidation levels of halogens

Relaxation in Molecules or Ions With Covalently Bonded Halogens

Replacement by halogen with

Replacement of halogens with

Ruthenium reactions with halogens

Secondary alcohols reaction with halogen acids

Selectivity in Radical Halogenation with Fluorine and Bromine

Silanes with halogens

Silver carboxylates, reaction with halogens

Sodium alkyl thiolates, reaction with halogen substituted metal complexes

Substitution and addition reactions with halogens

Tertiary alcohols reaction with halogen acids

Tetrahedral oxidations with halogens

The interaction of an alcohol with a halogen compound under basic conditions

Titanium halogenations with

Triphenylphosphine, complexes with halogen

Water reaction with halogens

With Elemental Halogens

With Exocyclic Halogen Substituents

With Halogen-Containing Compounds

With Halogens and Interhalogen Compounds

With Replacement of a Halogen Atom

With Replacement of the Halogen Atoms

With axial halogen

With equatorial halogen

With phosphorus-halogen bonds

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