| 摘要 |
PROBLEM TO BE SOLVED: To provide a novel europium (III) complex which is liquid at normal temperature and normal pressure and to provide a use thereof.SOLUTION: The europium (III) complex of the present invention comprises: a europium (III) ion to which four specific anionic bidentate ligands are coordinated; and a counter cation represented by the following formula (2) (Rrepresents an alkyl group; Rrepresents a group obtained by substituting one of the hydrogen atoms of an alkyl group with a cycloalkyl group, a cycloalkyl group, an aralkyl group, or an aryl group; and Rrepresents a hydrogen atom, a methyl group, or an ethyl group).SELECTED DRAWING: None |
