A method in accordance 8, wherein said metal is platinum, {HEAD ~ palladium} and {TAIL ~ ruthenium} 
A method in accordance 8 , wherein said metal is platinum , { HEAD ~ palladium } and { TAIL ~ ruthenium }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD OTH TAIL TAIL TAIL TAIL TAIL