Specific examples thereof include iron powders, iron chloride, iron formate, {TAIL ~ iron acetate}, {HEAD ~ iron acrylate}, and iron methacrylate 
Specific examples thereof include iron powders , iron chloride , iron formate , { TAIL ~ iron acetate } , { HEAD ~ iron acrylate } , and iron methacrylate
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH