Nitrogen oxygen fluorides

The region between 667 and 10 cm (15-1000 pm) contains the bending vibrations of carbon, nitrogen, oxygen, fluoride with atoms heavier than mass 19, and additional bending motions in cyclic or unsaturated systems. The low-frequency molecular vibrations found in the far infrared are particularly... 

A side stream from the anode product mixture is passed over a hot (100-115°C) alumina bed where the fluorine reacts quantitatively to produce aluminum fluoride and oxygen. The nitrogen/oxygen ratio is... 

Fluorinated -alkenes and -cycloalkenes have a special relationship with their hydrocarbon analogues, usually exhibiting a chemistry that is complementary. For example, the fluorinated systems are frequently susceptible to nucleophilic attack, in some cases dramatically so, and therefore reactions of nucleophiles with fluorinated alkenes often reveal unique new chemistry. This chapter covers electrochemical reduction, principles governing orientation and reactivity of fluorinated alkenes towards nucleophiles, fluoride ion as a nucleophile and the mirror-image relationship of this chemistry with that of proton-induced reactions, reactions with nitrogen-, oxygen-, carbon- centred nucleophiles etc., and, finally, chemistry of some oligomers of fluorinated -alkenes and -cycloalkenes. 

When in compounds such as NF3 and OF2 the nitrogen or oxygen atom is bound to the strongly electronegative fluorine atoms, it has become positive and it still possesses only such a small proton affinity that these molecules no longer form complexes. OF2 is an oxygen fluoride and not a fluorine oxide, if we indicate the anion, the acid residue, by the second part of the name. 

Direct synthesis of NF3 from nitrogen and fluorine was not effected until 1964, when Maya obtained yields up to 30% on passing an N2-F2 mixture at a pressure of 20- 40 mm through an electric discharge in a tube cooled to — 196°C (207). This method is similar to that used in the synthesis of oxygen fluorides from the elements (144,259), except that in the latter case different oxygen fluorides are produced by changing the stoichiometry of the mixture of reactants, whereas with N2-F2 mixtures only NF3 results. 

Among the products of the irradiation of FNO are found all of the nitrogen oxides, the various known polyoxygen fluorides, nitrogen, oxygen, and possibly FNO3, as well as the proposed dimers and trimers. The evidence for polymeric (FNO) was obtained from the product distillate at 223° K. where the mass spectrometric data shown in Table IX were obtained. 

Table 11.02. Carbon Dioxide, Nitrogen, Oxygen, and Water Vapor Permeability through Solvay Solef 1008 Polyvinylidene Fluoride Film...

Molecular acids Fluorides, chlorides, bromides, sulfates, phosphates, nitrogen/oxygen compounds Etch chambers, diffusion furnaces, CVD processes, buffered oxide etch, wet benches using HCl, HF Forms haze crystals on reticles, wafers, and exposure tool optical elements, causes corrosion of A1 and Cu metal lines... 

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