prepared by the alkylation of fluorenyllithium with (−)-menthyltosylate, and the complex (+)-(pseudo-neomenthylfluorenyl)Co(COD) (6) was synthesized by the metathetic reaction of the corresponding lithium salt with (PPh3)3CoCl and COD, in which an inversion of the cyclohexane ring of the terpene moiety was observed upon complexation. The structures of the compounds 1, 2, 3, 4, 5, and 6 were determined by single-crystal