The photographic element 2 wherein T1 is a timing or linking {HEAD ~ group} which functions by {TAIL ~ electron transfer} down an unconjugated chain and is of the formula 
functions by
The photographic element 2 wherein T1 is a timing or linking { HEAD ~ group } which functions by { TAIL ~ electron transfer } down an unconjugated chain and is of the formula
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD OTH REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH