P,P-Bis[4-(dimethyl­amino)­phen­yl]-N,N-bis­(propan-2-yl)phosphinic amide

The mol­ecular structure of the title compound, C₂₂H₃₄N₃OP, adopts a distorted tetra­hedral geometry at the P atom, with the most noticeable distortion being for the O—P—N angle [117.53 (10)°]. An effective cone angle of 187° was calculated for the compound. In the crystal, weak C—H...O inter­actions create infinite chains along [100], whereas C—H...π inter­actions propagating in [001] generate a herringbone motif.

rac-[2-(Dicyclohexylphosphanyl)phenyl](phenyl)phosphinic diisopropyl­amide–borane hemihydrate

In the title compound, C₃₀H₄₈BNOP₂·0.5H₂O, the water molecule is disordered about an inversion centre. Both phospho­rus atoms shows distortions in their tetra­hedral environments with the cyclo­hexyl substituents disordered over two orientations in a 0.851 (3):0.149 (3) occupancy ratio. The crystal structure is assembled via O—H...O inter­actions between pairs of phosphininc amide mol­ecules and water molecules, creating hydrogen-bonded dimers with graph-set R₂⁴(8) along [001]. Weak C—H...O inter­actions are also observed.