Patent ID: 7642548

Claim:
An electroluminescent compound having the general chemical formula: wherein: L is selected from the group consisting of M is selected from the group consisting of ruthenium, rhodium, palladium, osmium, iridium and platinum; n is 1 or 2; R 1 , R 4 and R 5 are the same or different and are independently selected from the group consisting of substituted and unsubstituted hydrocarbyl groups; substituted and unsubstituted monocyclic and polycyclic heterocyclic groups; substituted and unsubstituted hydrocarbyloxy and carboxy groups; fluorocarbyl groups; halogen; nitrile; amino; alkylamino; dialkylamino; arylamino; diarylamino; and thiophenyl; p, s and t are independently selected from the integers 0, 1, 2 and 3, subject to the proviso that where any of p, s and t is 2 or 3 only one of the entities R 1 , R 4 and R 5 can be other than saturated hydrocarbyl or halogen; R 2 and R 3 are the same or different and are independently selected from the group consisting of substituted and unsubstituted hydrocarbyl groups and halogen; and, q and r are independently selected from the integers 0, 1 and 2.