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