Method for producing ruthenium compound

02 0 3l1m2n 1 2 A method for producing ruthenium compound including the step of reacting a compound represented by General Formula (1): RuL(wherein Lrepresents an unsaturated hydrocarbon compound having 4 to 10 carbon atoms and at least two double bonds) with trifluorophosphine or reacting the compound represented by General Formula (1) with trifluorophosphine, and hydrogen or a halogen to obtain a compound represented by General Formula (2): Ru(PF)(L)(L)(wherein Lrepresents a hydrogen atom or halogen atom, Lrepresents an unsaturated hydrocarbon compound having 4 to 10 carbon atoms and at least two double bonds, l is an integer from 1 to 5, m is an integer from 0 to 4, and n is an integer from 0 to 2, provided that l+m+2n=5 or 6). With this method, a trifluorophosphine-ruthenium compound can be synthesized under low-temperature and low-pressure conditions.