N,N-Bis(diphenyl-phosphan-yl)cyclo--penta-namine.

The coordination around the N atom in the title compound, C(29)H(29)NP(2), shows an almost planar geometry, defined by the attached P and C atoms, in order to accomodate the steric bulk of the phenyl rings. The distortion of the trigonal-pyramidal geometry of the N atom is illustrated by the bond angles ranging between 115.22 (12) and 121.76 (9)°. The P atoms present a pyramidal environment with bond angles ranging from 100.62 (9) to 104.71 (8)°. One of the C atoms in the cyclo-pentyl ring displays a 0.822 (4):0.178 (4) positional disorder. Within the crystal structure, intra-molecular C-H⋯P hydrogen bonds together with inter- and intra-molecular C-H⋯π inter-actions link the mol-ecules into a supra-molecular two-dimensional network.