| http://www.w3.org/ns/prov#value | - cent ring atoms form a fused 5- or 6-membered aromatic group, each R is independently selected from H, alkyl, aralkyl, aryl and heteroaryl, x is 0 to 3, and y is 0 to 3; J is selected from monodentate ligands having the formula wherein each R9 is independently selected from the group consisting of alkyl, alkenyl, alkynyl, aralkyl, CN, CF3, NO2, O-alkyl, halo, and aryl, and z is 0 to 5; X is a link
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