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
Rashard Lewis Cavaliers, what he called the biggest shot of his career. The Magic won the series and advanced to the NBA Finals, where they were defeated by the Los Angeles Lakers in five games. On August 6, 2009, Lewis was suspended without pay for the first ten games of the 2009–10 season after testing positive for a banned substance. On December 18, 2010, Lewis was traded to the Washington Wizards in exchange for Gilbert Arenas. In 60 games for the Wizards over two seasons, Lewis averaged 9.7 points, 4.9 rebounds and 1.5 assists per game. On June 20, 2012, Lewis was