Big Chemical Encyclopedia

Chemical substances, components, reactions, process design ...

Articles Figures Tables About

Iodine-oxygen compounds

Separation of Some Xenon and Iodine Oxygen Compounds. Radlokhimlya 7, 678 (1965). (In Russian). 20 40851... [Pg.74]

Iodine forms compounds with all the elements except sulfur, selenium, and the noble gases. It reacts only indirectly with carbon, nitrogen, oxygen, and some noble metals such as platinum. [Pg.360]

Since phenol has an appreciable dipole moment, and no low energy acceptor orbitals, it should interact best with the donors that have the largest lone pair dipole moment — the oxygen compounds. Iodine has no dipole moment and the interaction with iodine is expected to be essentially covalent. Iodine should interact best with the donors that have the lowest ionization potential, i.e., the ones whose charge clouds are most easily polarized. Similar considerations have been employed to explain the donor strengths of primary, secondary and tertiary amines 35a) and the acid strengths of (35b) ICl, Bt2, I2. CeHsOH and SO2. [Pg.90]

Prepare a solution of iodic acid (see p. 109) and pour it into two test tubes. Pour a potassium iodide solution into one tube. What substance evolves Pour an iron(II) sulphate solution into the other tube. What do you observe Write the equations of the reactions. What properties of iodic acid do the above experiments indicate Write the formulas of the iodine oxyacids. What oxygen compounds of iodine are known How are they prepared ... [Pg.101]

On the other hand, from oxygen compounds, iodine will displace chlorine ... [Pg.147]

Iodine forme, with oxygen, compounds of various degrees of oxidation, the lowest being iodic oxide—10, and iodous acid—IOs the highest iodic acid—TOe,- and periodic acid—IOT. The latter three constitute salts with the metallic bases, which ore called iodites, iodates, and byperiodates respectively. To enter into a description of the processes by which they are prepared, would not be warranted by the uses whioh they serve —namely, of forming the links of analogy between iodine and chlorine, bromine, et cetera. [Pg.394]

One of the distinctive chemical properties of non-metallic elements is their ability to combine with metals forming simple binary compounds in which they are the negative constituent. It is the purpose of this chapter to deal with such simple compounds of the more pronounced non-metals chlorine, bromine, iodine, oxygen, sulphur, and nitrogen. [Pg.137]

Fluorine also differs from its congeners in its apparent inability to form oxy-acids and oxy-salts. On the other hand, there are some fluorine-oxygen compounds that have no chlorine, bromine, or iodine homologs. Among these are fluorine nitrate, FONO2 fluorine perchlorate, FOCIO3 ... [Pg.211]

We previously reported that iodine containing compounds are resistant to oxygen plasma etching, and proposed two-level resist systems utilizing a mixture of iodine compounds and a commercially available positive photoresist(3). However, this resist has low resistance to O -RIE. [Pg.211]

At first sight there seems to be an anomaly in the reactions involving the free halogens and their oxygen compounds. Thus, although chlorine is able to liberate iodine from iodide ion, icxiine is able to liberate chlorine from chlorate ion,.according to the reaction... [Pg.298]

Iodine forms compounds with all elements except the noble gases, sulfur, and selenium, but only reacts indirectly with carbon, nitrogen, oxygen, and some noble metals. Ferric and cupric salts, and compounds of vanadium, chromium, and manganese in their highest oxidation status are reduced in acid solution by iodide ions, with liberation of free iodine. Iodine reacts with hydrocarbons, but equilibria are often unfavorable because hydrogen iodine is liberated, which may reduce the alkyl iodide to the hydrocarbon with formation of iodine. [Pg.1459]

In power of affinity iodine stands below bromine, as bromine does below chlorine. With metals it forms iodides extremely analogous to the chlorides and bromides. The iodides of lead, mercury, silver, and a few others are insoluble or sparingly soluble most of the others are soluble. Some iodides possess beautiful colours, as those of lead and mercury. With hydrogen and oxygen iodine forms compounds, which, as far as they are known, correspond to those of chlorine and bromine with the same elements. [Pg.84]

An NMR study of bis(acyloxy)iodoarenes in chloroform has confirmed that the T-shaped structure of iodine(in) compounds observed in the solid state is also adopted in solution [193,194]. The carboxylic groups of bis(acyloxy)iodoarenes show a dynamic behavior, which is explained by a [l,3]-sigmatropic shift of the iodine atom between the two oxygen atoms of the carboxylic groups [194]. [Pg.43]

A series of heterocyclic compounds containing trivalent iodine, oxygen and boron in a five-membered ring has been prepared by oxidative cyclization of commercially available orf/to-iodophenylboronic acids 182 and 185... [Pg.64]

The hydrogen in water (and in goldfish) worked as well as paraffin. Back in the lab they quickly tested whatever they could lay hands on to irradiate silicon, zinc, phosphorus, which did not seem to be affected by the slow neutrons copper, iodine, aluminum, which did. They tried radon without beryllium to make sure the paraffin was affecting neutrons and not gamma rays. They replaced the paraffin with an oxygen compound and found much less increase in induced radioactivity. [Pg.219]

In 1760, it was the days of elements such as hydrogen, oxygen, chlorine and iodine, and compounds such as carbon dioxide were not known. Therefore, it may safely be said that it was impossible to clarify the components of Cadet s liquid in those days. Cadet s fuming arsenic liquid fascinated many chemists, and his work... [Pg.9]

Several heterocyclic compounds containing trivalent iodine, oxygen, and boron in a five-membered ring have been prepared by oxidative cyclization of the orifco-iodophenylboronic acids 168 and 171 (201IICI1263). 1-Chloro-4-fluoro-lH-lX -benzo[(/][l,2,3]iodoxaborol-3-ol 170 was formed in the reaction of 2-fluoro-6-iodophenylboronic acid 168 with chlorine followed by treatment of the intermediate iododichloride 169 with water. The... [Pg.36]

The hydrazide of benzothiazole-2-carboxylic acid may be converted into compounds [1 R = C(0)NHNHC(O)Alk, C(0)NHNHC(0)Ar, C(0)NHNH-C(0)NHAlk, C(0)NHNHC(S)NHAlk, or C(0)NHNHC(S)NHAr] by standard procedures. Cyclization of the oxygen compounds with polyphosphoric acid or phosphorus oxychloride, or of the sulphur compounds with red lead or iodine in sodium hydroxide, yields the corresponding 1,3,4-oxadiazole (37 X = O). The 1,3,4-thiadiazoles (37 X = S) may be prepared by treatment of the oxygen compounds with phosphorus pentasulphide or by cyclization of the sulphur compounds with acid. Compounds (38 X = O or S Y = N) may be prepared similarly from benzothiazole-6-carboxylic acid. When compounds [1 R = C(0)NHNHC(S)NHAlk or C(0)NHNHC(S)NHAr] are cyclized with 5% aqueous sodium hydroxide or polyphosphoric acid they yield compounds (37 ... [Pg.396]

The oxidation number of chlorine, bromine or iodine in compounds is -1, except in the compounds that they form with oxygen and with other halogen atoms. Thus, in HCl the oxidation number of chlorine is —1. [Pg.18]


See other pages where Iodine-oxygen compounds is mentioned: [Pg.335]    [Pg.181]    [Pg.181]    [Pg.335]    [Pg.181]    [Pg.181]    [Pg.365]    [Pg.127]    [Pg.62]    [Pg.233]    [Pg.408]    [Pg.365]    [Pg.71]    [Pg.13]    [Pg.408]    [Pg.486]    [Pg.1381]    [Pg.10]    [Pg.12]    [Pg.66]    [Pg.116]    [Pg.287]    [Pg.87]    [Pg.71]    [Pg.378]    [Pg.3]    [Pg.12]    [Pg.38]    [Pg.44]    [Pg.76]    [Pg.322]   
See also in sourсe #XX -- [ Pg.327 ]




SEARCH



Compounds oxygenated

Iodinated compounds

Iodine compounds

Oxygen compounds

Oxygenate compounds

Oxygenous compound

© 2024 chempedia.info