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