NOVEL OPTICALLY ACTIVE RARE EARTH COMPLEX EMITTING CIRCULARLY POLARIZED LIGHT

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A novel, optically active rare earth complex (1) represented by the general formula (1) : (1) wherein X1 and X2 each independently represents hydrogen, halogeno, C1-4 alkyl, or C1-4 alkoxy; Y1, Y2, Y3, and Y4 each independently represents hydrogen, halogeno, or C1-4 alkyl; R1 represents C1-8 alkyl, C1-8 fluoroalkyl, or phenyl; and R2 represents (a) cyclopentadienyl, etc., (b) phenyl, etc., or (c) naphthyl, etc.