Organic metal compounds, organic light-emitting devices, and lighting devices employing the same are provided. The organic metal compound has a chemical structure represented by Formula (I): wherein M is Ir, Pt, Ru, Os, Cu, Au, or Pd; n is 1, 2, or 3; m is 0, 1, or 2, and the sum of m and n is equal to a valence of M; L is a bidentate ligand; R1 is hydrogen, C1-9 alkyl group, C5-10 cycloalkyl group, or C5-12 aromatic group; each of R2 is independent and can be hydrogen, halogen, cyano group, C1-9 alkyl group, C1-6 fluoroalkyl group, C5-10 cycloalkyl group, or C5-12 aromatic group; R3 is halogen; and, R4 and R5 are independently the same or different hydrogen, hydroxyl group, amine group, alkyl amine group, halogen, cyano group, C1-9 alkyl group, C1-6 fluoroalkyl group, C5-10 cycloalkyl group, or C5-12 aromatic group.