ubstituted at a 4- or 5-position. [0068] A metal coordination compound, wherein in the formula (8), the partial structure Rp-Ph- is 3,4,5-trifluorophenyl group, and R???q is a hydrogen atom or a fluorine atom or trifluoromethyl group substituted at a 4- or 5-position. [0069] A metal coordination compound, wherein in the formula (8), the partial structure Rp-Ph- is 4-trifluoromethylphenyl group, an