| http://www.w3.org/ns/prov#value | - such as 2,4-cyclopentadien-1-yl, 2,4-cyclohexadien-1-yl, 2,5-cyclohexadien-1-yl and the like. [0075] Preferable examples of the aryl group include an aryl group having 6 to 14 carbon atoms, such as phenyl, naphthyl (1-naphthyl and 2-naphthyl), anthryl, phenanthryl, acenaphtylenyl and the like. [0076] Preferable examples of the aromatic heterocyclic group include an aromatic monocyclic heterocyclic
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