If the compound is a disulfide, the disulfide bond is broken and {HEAD ~ each sulfur} is individually bonded to {TAIL ~ the metal} 
is individually bonded to
If the compound is a disulfide , the disulfide bond is broken and { HEAD ~ each sulfur } is individually bonded to { TAIL ~ the metal }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL