Bis[2-(morpholinometh-yl)phen-yl]phenyl-phosphane.

The title compound, C(28)H(33)N(2)O(2)P, contains a penta-coordinated P atom as a result of the weak N→P intra-molecular inter-actions, with three C atoms, two N atoms and the lone pair arranged in a dicapped pseudo-tetra-hedral geometry. The morpholine rings exhibit an almost ideal chair conformation. In the crystal, two weak C-H⋯O hydrogen-bond inter-actions link the mol-ecules in layers stacked along the a axis; there are no further inter-actions between the layers.

[2-(4-Methyl-piperazin-1-ylmeth-yl)phen-yl]diphenyl-phosphane.

In the title compound, C(24)H(27)N(2)P, the P atom is bonded to three C atoms in a trigonal-pyramidal geometry. The overall Ψ-trigonal-bipyramidal coordination of the P atom is established when the contribution of the electron lone pair and of the N-P donor-acceptor distance of 3.051 (3)Å are considered. The 4-methyl-piperazinyl ring adopts a chair conformation. Intra- and inter-molecular C-H⋯π hydrogen bonding leads to the consolidation of the structure.