Lewis acids and bases ionic bonding. Classically, the term "Lewis acid" is restricted to trigonal planar species with an empty p orbital, such as BR where R can be an organic substituent or a halide. For the purposes of discussion, even complex compounds such as EtAlCl and AlCl are treated as trigonal planar Lewis acids. Metal ions such as Na, Mg, and Ce, which are invariably complexed with additional ligands, are often sources of coordinatively unsaturated derivatives that form Lewis adducts upon reaction with a Lewis base[citation needed]. Other reactions might simply be referred to as "acid-catalyzed" reactions. Some compounds, such as HO, are
Magic in the Air (Magic System song) Magic in the Air (Magic System song) "Magic in the Air" is a 2014 single by Ivorian musical group Magic System, featuring Moroccan singer Chawki and produced by Moroccan producer RedOne. The track also appears on Magic system's album "Africainement vôtre," released on 19 May 2014. The association football themed song focusing on African football was produced by Swedish-Moroccan producer RedOne with the catchy refrain saying On t'invite à la magie, y a pas de raccourci,<br> Oublie tes soucis, viens faire la folie<br>Feel the magic in the air, allez allez allez, <br>Levez les mains en l'air, allez allez allez. which