Di- oxide

TABLE 4. Hyperfine splitting constants (gauss) of thioxanthone S-(mono or di)oxide radical anions as free or tight contact ion-pair ... 

Industrial maintenance coatings—titanium in alkyl with 100% rutile titanium di> oxide. 

Reduction of (V,(V -di oxides (bis nitrosyl derivatives or intramolecular nitroso dimers) with hydrogen with a palladium-on-carbon catalyst [58] (Eq. 54). 

There have been comprehensive reviews on the coordination chemistry of aromatic JV-oxides by Garvey et al. (up to 1968)67 and Karayannis et al. (up to 1971),68 the latter including a short section on aliphatic amine (V-oxides and secondary amine nitroxide free radicals. A further review by Karayannis et al. (up to 1975)69 covers mono- and di-oxides of bipyridyl, o-phenanthroline and some diazines. 

Mellor (Ref 3) reports that contact with Cu oxide, Pb mono- or di-oxide, Hg (II) oxide, Sn oxide and tri-iron tetraoxide causes violent decompn and ignition... 

Only derivatives of the 1,2-oxathiole series have been obtained by direct heteroatom coupling. The successful bond formation involves some type of activation of the sulfur atom in 3-hydroxypropanethiol or its oxidized derivatives. TTie parent 1,2-oxathiolane system (106) was recently reported (81CC741) to be obtained from the vacuum pyrolysis of (105), as shown in Scheme 23. A cyclic oligomer is believed to be generated first and (106) is formed on standing. Oxidation of (106) yields the mono- and di-oxide which have been known for some time. The monoxide may be obtained by the oxidative coupling of 3-hydroxypropane thiol (equation 22). Chlorine is the most frequently used oxidant and... 

In contact with ordinary fresh air, the conductivity of water is 0-7 to 0-8 x 10-6 mho, the rise being due mainly to the dissolved carbon di-oxide.5... 

Rhodium that has been precipitated from solution evolves considerable quantities of various gases, such as carbon di-oxide, hydrogen, and oxygen, when heated in vacuo. After this treatment the metal does not occlude appreciable quantities of hvdrogen or of carbon di-oxide between 420° C. and 1020° C.s... 

APM-Ace [2-carboxy- 3-(A-(/>-methoxycarbonyl-2-phenyl)eth-ylcarbamoyl)]ethanaminium 6-methyl-4-oxo-l,2,3-oxathiazin-3-ide-2,2-dioxide L-Phenylalanine, L-a-aspartyl-2-methyl ester compound with 6-methyl-l,2,3-oxathiazin-4(3H)-one 2,2-di-oxide (1 1)... 

Sc4N4 is prepared by ammonolysis of selenium tetrahalides, diselenium dichloride,selenium di-oxide, or diethyl selenite. It is rather unstable and decomposes explosively on heating or by sudden impact. 

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