By a cationic Lewis acid is meant {HEAD ~ a cation} with a positive charge such as Ag+, {TAIL ~ H+}, and Na+ 
By a cationic Lewis acid is meant { HEAD ~ a cation } with a positive charge such as Ag+ , { TAIL ~ H+ } , and Na+
OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL OTH OTH OTH