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