28 research outputs found
Phosphoramidates: Molecular Packing and Hydrogen Bond Strength in Compounds Having a P(O)(N)n(O)3-n (n = 1, 2, 3) Skeleton
Cyclohexyl(methyl)ammonium {bis[cyclohexyl(methyl)amino]phosphoryl}(4-methylphenylsulfonyl)azanide
In the anion of the title salt, C7H16N+·C21H35N3O3PS−, the P and S atoms are both in distorted tetrahedral environments and the angles at the tertiary N atoms confirm their sp
2 character. The two S=O groups are in syn and gauche conformations with respect to the phosphoryl group. In the crystal, N—H⋯O(=S) and N—H⋯O(=P) hydrogen bonds involving two anions and two cations form a centrosymmetric four-component cluster
N,N,N′,N′-Tetraethyl-N′′-(2-fluorobenzoyl)phosphoric triamide
In the title compound, C15H25FN3O2P, the phosphoryl group is in an anti and syn orientation to the C=O and N—H groups, respectively. The P atom is in a distorted tetrahedral environment. One of the ethyl groups is disordered over two sets of sites with refined occupancies of 0.755 (6) and 0.245 (6). In addition, the F atom was refined as disordered with occupancies fixed at 0.9 and 0.1. This disorder corresponds to a rotation of approximately 180° of the fluorobenzene ring about its connecting C—C bond. In the crystal, pairs of intermolecular N—H⋯O(=P) hydrogen bonds form centrosymmetric dimers
N-(2,6-Difluorobenzoyl)-P,P-bis(pyrrolidin-1-yl)phosphinic amide
The phosphoryl and carbonyl groups in the title compound, C15H20F2N3O2P, are anti with respect to each other (but the P- and C-groups are separated by another atom) and the P atom is in a tetrahedral coordination environment. Two C atoms in one of the pyrrolidinyl fragments are disordered over two sets of sites with occupancies of 0.746 (8) and 0.254 (8). The environments of the pyrrolidinyl N atoms show a slight deviation from planarity and none of the three N atoms is involved in any hydrogen bond as an acceptor. In the crystal, pairs of intermolecular N—H⋯O hydrogen bonds form inversion dimers
N,N′-Dicyclohexyl-N′′-(2,6-difluorobenzoyl)-N,N′-dimethylphosphoric triamide
In the title molecule, C21H32F2N3O2P, the P=O and N—H groups are syn with respect to each other, and the P atom is bonded in a distorted tetrahedral environment. The phosphoryl group adopts an anti orientation with respect to the carbonyl group. The angles at the tertiary N atoms (with bond-angle sums of 358.4 and 357.0°) confirm their sp
2 character. In the crystal, inversion dimers linked by pairs of N—H⋯O hydrogen bonds generate R
2
2(8) loops
N,N′-Di-tert-butyl-N′′-(2,6-difluorobenzoyl)phosphoric triamide
In the title compound, C15H24F2N3O2P, the phosphoryl and carbonyl groups adopt anti positions relative to each other. The P atom is in a tetrahedral coordination environment and the environment of each N atom is essentially planar. In the crystal, adjacent molecules are linked via N—H⋯O=P and N—H⋯O=C hydrogen bonds into an extended chain parallel to the a axis. The crystal studied was a non-merohedral twin with a minor twin component of 36.4 (1)%
N-(2-Fluorobenzoyl)-N′,N′′-bis(4-methylphenyl)phosphoric triamide
The P atom in the title compound, C21H21FN3O2P, is in a tetrahedral coordination environment and the environment of each N atom is essentially planar (sums of angles = 359.7, 359.9 and 358.4°). The phosphoryl and carbonyl groups adopt anti orientations with respect to each other. In the crystal, adjacent molecules are linked via N—H⋯O=P and two N—H⋯O=C hydrogen bonds into an extended chain parallel to the a axis
O-Phenyl (tert-butylamido)(p-tolylamido)phosphinate
In the title molecule, C17H23N2O2P, the P atom has a distorted tetrahedral environment. The P—N bond to the tolylamido fragment is 1.642 (4) Å while that to the butylamido fragment is 1.629 (3) Å. The dihedral angle between the two benzene rings is 82.3 (2)°. In the crystal, adjacent molecules are linked via weak N—H⋯(O)P and N—H⋯N hydrogen-bonding interactions into an extended chain parallel to the b axis. The three methyl groups of the tert-butylamido substituent are disordered over two sets of sites with equal occupancies. The crystal studied was found to be a non-merohedral twin with the minor twin component = 23.1 (1)%