effecting contact between {HEAD ~ substantially equal molar amounts} of an alkylaryliodonium organic sulfonic acid salt having {TAIL ~ the formula}, 
effecting contact between { HEAD ~ substantially equal molar amounts } of an alkylaryliodonium organic sulfonic acid salt having { TAIL ~ the formula } ,
OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH