1,2-Bis[di-(benzo-furan-2-yl)phosphan-yl]ethane.

The title compound, C34H24O4P2, consists of an ethyl-ene-bridged diphosphine with benzo-furan residues, where the P-C-C-P backbone exhibits an anti-conformation. The asymmetric unit contains one half mol-ecule, which is completed by inversion symmetry.