r-funan-tbu;(r,r)-1-[1-(di-tert-butylphosphino)ethyl]-2-[di(2-furyl)phosphino]ferrocene (acc to cas);(R)-1-{(SP)-2-[Di(2-furyl)phosphino]ferrocenyl}ethyldi-tert-butylphosphine;(2R)-1-[(1R)-1-[Bis(1,1-dimethylethyl)phosphino]ethyl]-2-(di-2-furanylphosphino)ferrocene;1,2,3,4,5-cyclopentanepentayl, compd. with 1-[(1S)-1-[bis(1,...;(R)-1-[(Sp)-2-(Di-2-furylphosphino)ferrocenyl]ethyldi-t-butylphosphine