Cyclopentadienes with a P-functionalised alkyl or aryl side chain are useful precursors for mono- and dianionic bifunctional ligands in main group and transition metal chemistry. We have developed two synthetic approaches for several (chiral) phosphanylalkyl or -aryl cyclopentadienyl complexes: a) employing lithium phosphanylalkyl- and -arylcyclopentadienides, such as Li[(C5H4)-X-PR1R2] [R1 = H, alkyl, aryl; R2 = alkyl, aryl; X = alkylene, arylene] [1], as transfer reagents for the organic ligand, and b) by modification of the metalbound cyclopentadienyl ring in ferrocenes. Primary (Fig. 1) and secondary ferrocenyl phosphines were obtained by method b). These phosphines display interesting reactivity and can be used as starting materials for further functionalisation of the phosphanyl group [2] or for ferrocenyl-substituted P-B-based polymers