trans-(Ethene-1,2-di­yl)bis­(diphenyl­phosphine selenide)

In the title mol­ecule, C₂₆H₂₂P₂Se₂, both P atoms have distorted tetra­hedral environments, resulting in effective cone angles of 177 and 174°. Inversion twinning was detected and refined to a ratio of 0.35:0.65. Weak inter­molecular C—H...Se inter­actions are observed.

Dicyclo­hex­yl[4-(dimethyl­amino)­phen­yl]phosphine selenide

In the title mol­ecule, C₂₀H₃₂NPSe, the P atom has a distorted tetra­hedral environment resulting in an effective cone angle of 172°. Weak inter­molecular C—H...Se inter­actions are observed.