Lewis acids and bases factors, in addition to electron configuration factors, play a role in determining the strength of the interaction between the bulky di-"t"-butylpyridine and tiny proton. Lewis acids and bases A Lewis acid is a chemical species that contains an empty orbital which is capable of accepting an electron pair from a Lewis base to form a Lewis adduct. A Lewis base, then, is any species that has a filled orbital containing an electron pair which is not involved in bonding but may form a dative bond with a Lewis acid to form a Lewis adduct. For example, NH is a Lewis
2012 Super League season results at Etihad Stadium as part of Magic Weekend<br> F. Galpharm Stadium renamed John Smith's Stadium as of 1 August 2012 <br> G. Game switched to Leigh Sports Village due to fixture clash with co-tenants Sale Sharks 2012 Super League season results This is a list of the 2012 Super League season results. Super League is the top-flight rugby league competition in the United Kingdom and France. The 2012 season started on 4 February and ends on 6 October with the 2012 Super League Grand Final at Old Trafford. The Magic Weekend was scheduled over the weekend of 26 and 27