when n is 1, M represents ruthenium, Q represents benzene or p cymene, and {HEAD ~ Y} represents a chlorine atom, {TAIL ~ a bromine atom}, or an iodine atom 
represents
when n is 1 , M represents ruthenium , Q represents benzene or p cymene , and { HEAD ~ Y } represents a chlorine atom , { TAIL ~ a bromine atom } , or an iodine atom
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD REL OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH