erein in the formula (8), the substituent R is hydrogen, and R???q represents a fluoro or trifluoromethyl group substituted at a 4- or 5-position. [0065] A metal coordination compound, wherein in the formula (8), the partial structure Rp-Ph- is 5-fluorophenyl group, and R???q is a hydrogen atom or a fluorine atomg or trifluoromethyl group substituted at a 4- or 5-position. [0066] A metal coordinat