There is {HEAD ~ no especial limitation} on {TAIL ~ the iron compound} if it is a compound containing an iron atom in its molecule and is soluble in the aforementioned reaction liquid 
There is { HEAD ~ no especial limitation } on { TAIL ~ the iron compound } if it is a compound containing an iron atom in its molecule and is soluble in the aforementioned reaction liquid
OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH