To provide nitrogen-containing aromatic compounds with excellent oxygen reduction activity, metal complexes containing them, and catalysts and electrodes employing the same, the present invention provides an aromatic compound satisfying the following conditions (a) and (b):
(a) It has 2 or more structures surrounded by at least 4 coordinatable nitrogen atoms (which structures may be the same or different),
(b) At least one of the nitrogen atoms composing the structure is a nitrogen atom in a 6-membered nitrogen-containing heterocyclic ring.
为了提供具有优异氧还原活性的含氮芳香族化合物、含有它们的
金属络合物以及使用它们的催化剂和电极,本发明提供了一种满足以下条件(a)和(b)的芳香族化合物:
(a) 具有 2 个或 2 个以上由至少 4 个可配位氮原子包围的结构(这些结构可以相同或 不同)、
(b) 构成该结构的氮原子中至少有一个是 6 元含氮杂环中的氮原子。