Miscellaneous Nitrogen-containing Compounds

Finally, PNDO has been used to calculate the dipole moments of some saturated hydrocarbons with reasonable agreement with experiment. In Table 18 we show the values obtained by each method for small molecules of the general form AB, ABz and ABz- In Tables 19 to 23 we show the values obtained by each method for hydrocarbons, fluorine-containing compounds, oxygen-containing compounds, nitrogen-containing compounds and other miscellaneous compounds. In Fig. 3 and 4 we compare, where possible, these values, to the experimentally observed ones. 

This chapter is divided into four sections devoted to, respectively, spiro-heterocyclic compounds (e.g., spiropyrans and spirooxazines), Schiff bases and related nitrogen-containing molecules, bianthrones and other overcrowded ethenes, and, finally, miscellaneous compounds. 

The reactions of the phenolic hydroxyl group which have been included in this chapter comprise esterification with carboxylic acids and related reactants, with inorganic materials, with replacements producing nitrogen, sulphur and halogen-containing compounds, procedures for removal of the OH group and miscellaneous reactions. 

In addition to ammonia, coal gas contains small quantities of miscellaneous compounds that may be removed for their own value or to improve the gas product among the more common of these are pyridine bases and hydrogen cyanide. The former are nitrogen-containing organic materials... 

For further characterisation of oximes, imides and primary sulphonamides see p. 1226 under the miscellaneous neutral and acidic compounds containing nitrogen. 

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