dicyclopentyl(2-dicyclopentylphosphanylethyl)phosphane

2-dipyridin-4-ylphosphanylethyl(dipyridin-4-yl)phosphane

1,2-二(二-2-吡啶基膦酰)乙烷

1,2-乙烷二基二{二[3,5-二(三氟甲基)苯基]膦}

1,2-双(二五氟代苯基磷基)-乙烷