As used herein, an S— group bound to {TAIL ~ a metal surface} is defined as including both a presence and an absence of {HEAD ~ the thiol hydrogen} 
As used herein , an S — group bound to { TAIL ~ a metal surface } is defined as including both a presence and an absence of { HEAD ~ the thiol hydrogen }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD