Oxide halogen

Much of tills chapter concerns ET reactions in solution. However, gas phase ET processes are well known too. See figure C3.2.1. The Tiarjioon mechanism by which halogens oxidize alkali metals is fundamentally an electron transfer reaction [2]. One might guess, from tliis simple reaction, some of tlie stmctural parameters tliat control ET rates relative electron affinities of reactants, reactant separation distance, bond lengtli changes upon oxidation/reduction, vibrational frequencies, etc. 

Liquid phase processes, such as hydrogenation, halogenation, oxidation, nitration, kylation, and so on... 

Diazo compounds Diazoniiim sulfides and derivatives, Xanthates 1,2-epoxides Halo-aryl metals Haloarenemetal TC-complexes Halogen oxides Hydraziniiim salts Hyjiohalites... 

O-X Alkyl perchlorates. Chlorite salts. Halogen oxides, Hypohalites, Perchloric acid, Perchloryl Compounds... 

A combined halogenation-oxidation-dehydrohalogenation reaction has been described. ... 

The most important of the tertiary phosphine complexes of platinum(IV) are Pt(QR3)2X4, generally prepared by halogen oxidation [174] of cis- or trans-Pt(QR3)2X2 (Q = P, As, R = alkyl Q = Sb, R = Me), since direct reaction of the platinum(IV) halides with the ligands leads to reduction. Once made, the platinum(IV) compounds are stable to reduction ... 

Halogen oxidation of platinum(II) complexes generally occurs trans, as does reaction with H202 to afford dihydroxy complexes (Figure 3.106). 

Just as many palladium(IV) complexes are produced by halogen oxidation of the corresponding palladium(II) complex, so the palladium(IV) compounds tend to decompose by the reverse process, usually on heating ... 

The acid strengths and oxidizing abilities of the halogen oxoacids increase with the oxidation number of the halogen. The hypohalous acids, HXO (halogen oxidation number +1), are prepared by direct reaction of the halogen with water. For example, chlorine gas disproportionates in water to produce hypochlorous acid and hydrochloric acid ... 

Halogen oxide radicals such as CIO and BrO are important reactive intermediates in the catalytic cycles of ozone destruction in the middle and upper stratosphere. The first absorption band CIO(/l211 <— X2 I) starts from 318 nm and has a series of vibronic bands that converge to a broad continuum at wavelengths shorter than 264nm (Fig. 8).98-101 In this continuum region four dissociation pathways are thermodynamically possible,33... 

See other GLASS INCIDENTS See other HALOGEN OXIDES... 

Bailar, 1973, Vol. 2, 1388 Hydrolysis may proceed explosively. See other HALOGEN OXIDES... 

See other corrosion incidents, glass incidents, halogen oxides... 

Dining preparation of tungsten(IV) dibromide oxide, appropriate proportions of reactants are heated in an evacuated sealed glass ampoule to 400-500°C. Initially only one end should be heated to prevent excessive pressure bursting the ampoule. See other GLASS INCIDENTS See other halogens, oxidants... 

See Potassium Non-metal oxides See other halogen oxides, oxidants... 

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