1,2,3,4,5-cyclopentanepentayl, compd. with 1-[(1S)-1-[bis(3,5-dimethylphenyl)phosphino]ethyl]-2-(di-2-furanylphosphino)-1,2,3,4,5-cyclopentanepentayl, iron salt (1:1:1) [ 649559-65-9 ]