METAL COMPLEX, MODIFIED COMPOUND THEREOF AND USEFUL COMPOUND THEREOF

Provided is a compound including residues derived from a compound represented by Formula (1) and a divalent aromatic group, wherein the number of the residues is 2 to 4, the number of the divalent aromatic group is 1 to 3, and the sum of the numbers of the residues and the divalent aromatic group is 3 to 5. In Formula (1), each of Yto Yrepresent a group represented by any of the following Formula (2); in the following Formula (2), R represents a hydrogen atom or a hydrocarbyl group; each of Pto Prepresents an atomic group forming a heterocyclic ring containing Yto Y; Pand Prepresent an atomic group forming an aromatic ring or a heterocyclic ring; Qand Qrepresent a linking group or a direct bond; and Zand Zrepresent a hydrogen atom or a group represented by any of the following Formula (3); and in the following Formula (3), Rrepresents a hydrogen atom or a hydrocarbyl group.