Polycyclic aromatic compounds description

The first chapter discusses the concept of aromaticity, after which there is a description of aromatic substitution reactions. Chapters covering the chemistry of the major functionalized derivatives of benzene follow. A chapter on the use of metals in aromatic chemistry discusses not only the chemistry of Grignard reagents and aryllithium compounds but also the more recent uses of transition metals in the synthesis of aromatic compounds. The penultimate chapter discusses the oxidation and reduction of the benzene ring and the text concludes with the chemistry of some polycyclic compounds. 

Further, Garcia et al. [16] found that changes in the concentration of surfactant and alcohol, in the mobile phase, influence llie relative errors obtained with eq. 8.26, which were lower for CTAB with respect to SDS, and for 1-propanol with respect to 1-butanol. This simple model failed in taking into account some interactions of the solutes, which are more important in very hydrophobic systems and when solute-micelle interactions are diminished. It should be considered that the amount of surfectant on the column desorbed by 1-butanol is greater than by 1-propanol. Also, 1-butanol can compete to a greater extent than 1-propanol with the micelle, in the interaction with the solutes. Eq. 8.28 (with a term) provided a better description of the retention for highly hydrophobic polycyclic aromatic hydrocarbons (PAHs) than eq. 8.26 (Fig. 8.7). For these compounds, the plot of 1/k vs. (p was nonlinear. Similar results were obtained for several steroids eluted with SDS-acetonitrile eluents [17]. 

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