Patent ID: 7220761

Claim:
A compound comprising: or a solvate thereof and said compound is in an E, E configuration, and wherein NR 1 R 2 and NR 3 R 4 are in the ortho, meta or para position; X − is an anion; R 1 , R 2 , R 3 , or R 4 are independently selected from the group consisting of C 1-10 alkyl (linear or branched), alkenes (linear or branched), or wherein R 1 and R 2 or R 3 and R 4 taken together with the nitrogen atom to which they are attached form pyrrolidino or piperidino rings; and R 5 is (CH 2 ) n -MR 6 . wherein n is a number from 1 to 6, M is an organometallic compound selected from the group consisting of tin, silicon, and germanium, and wherein R 6 is alkyl, substituted or unsubstituted.