Bis(1,2,3,4-η4-anthracene)cobaltate(1−)

Two remarkable features of bis(anthracene)cobaltate(1−) (see picture) are that it is the first homoleptic anthracene transition metal complex to be prepared by a conventional synthesis, that is, one not involving a metal atom reactor, and it is the first anionic complex of a late (Groups 7–11) transition metal containing only bound aromatic hydrocarbons.