Patent ID: 7625639

Claim:
A neutral metal-complex compound which comprises a tridentate chelate ligand having a partial structure represented by a following general formula (I): wherein M represents any one metal atom of Group 9 in Periodic Table; L—Z represents an organic group expressed by N(nitrogen)-C(carbon) or O(oxygen)-O(oxygen); X represents a monovalent ligand having an atom of Groups 14 to 17 in Periodic Table; Y represents a carbon atom; A represents a cycloalkane moiety having 5 to 20 carbon atoms and further may have a substituent, an aromatic hydrocarbon group having 6 to 20 carbon atoms and further may have a substituent or a heterocyclic group having 2 to 20 carbon atoms and further may have a substituent indicating that a circle enclosing the sign A shows a ring structure comprising Y; R 1 to R 4 each independently represents a hydrogen atom, a cyano group, a halogen atom, an alkyl group having 1 to 12 carbon atoms and further may have a substituent, an alkylamino group having 1 to 12 carbon atoms and further may have a substituent, an arylamino group having 6 to 20 carbon atoms and further may have a substituent, an alkoxy group having 1 to 12 carbon atoms and further may have a substituent, an alkoxy halide group having 1 to 12 carbon atoms and further may have a substituent, an aryloxy group having 6 to 20 carbon atoms and further may have a substituent, an aromatic hydrocarbon group having 6 to 20 carbon atoms and further may have a substituent, a heterocyclic group having 3 to 20 carbon atoms and further may have a substituent, an alkyl halide group having 1 to 12 carbon atoms and further may have a substituent, an alkenyl group having 1 to 12 carbon atoms and further may have a substituent, an alkynyl group having 1 to 12 carbon atoms and further may have a substituent or a cycloalkyl groups having 1 to 12 carbon atoms and further may have a substituent; and R 1 & R 2 or R 3 & R 4 may bond each other to form a ring structure.