R, R-Reetz F-Diphosphonite

1,1'-BIS[(11BR)-DINAPHTHO[2,1-D:1',2'-F&

(R,R)-1,1'-BIS[DINAPHTHO[1,2-D,1,2F][1,3,2]DIOXAPHOSPHEPIN-8-YL]FERROCENE

1,1μBis[(11bR)-dinaphtho[2,1-d:1μ, 2μ-f][1,3,2]dioxaphosphepin-4-yl]ferrocene