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Rac-Phenyl (benzylamido)(p-tolyl-amido)-phosphinate.

ABSTRACT: The title compound, C(20)H(21)N(2)O(2)P, was synthesized from (RS)-(C(6)H(5)O)P(O)Cl(NHC(6)H(4)-p-CH(3)) and benzyl-amine. The product crystallizes as a racemate in a polar space group. The phospho-rus atom has a distorted tetra-hedral configuration: the bond angles at the P atom are in the range 103.2 (1)-118.4 (1)°. The P-N(benzyl-amido) bond [1.615 (2) Å] is slightly shorter than the P-N(p-tolyl-amido) bond [1.630 (2) Å]. Both N-H groups adopt an anti orientation relative to the phosphoryl group. In the crystal, the adjacent mol-ecules are linked via N-H⋯O hydrogen bonds, forming R(2) (2)(8) rings, into a one-dimensional arrangement parallel to the x axis.

SUBMITTER: Pourayoubi M

PROVIDER: S-EPMC3200931 | biostudies-literature |

REPOSITORIES: biostudies-literature

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Phenyl bis-(m-tolyl-amido)-phosphinate.

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Project description:In the title mol-ecule, C(19)H(25)N(2)O(2)P, the P atom is bonded in a distorted tetra-hedral environment. The dihedral angle between the two phenyl rings is 89.09?(8)°. The methyl H atoms are disordered over two sets of sites with equal occupancy. The O atom of the P=O group acts as a double hydrogen-bond acceptor of the type (N-H)(2)?(O=)P-, forming R(2) (2)(8) rings which are further linked into chains along [010].

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Project description:In the title mol-ecule, C(17)H(23)N(2)O(2)P, the P atom has a distorted tetra-hedral environment. The P-N bond to the tolyl-amido fragment is 1.642 (4) Å while that to the butyl-amido fragment is 1.629 (3) Å. The dihedral angle between the two benzene rings is 82.3 (2)°. In the crystal, adjacent mol-ecules are linked via weak N-H⋯(O)P and N-H⋯N hydrogen-bonding inter-actions into an extended chain parallel to the b axis. The three methyl groups of the tert-butyl-amido 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)%.

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Project description:In the title compound, C(21)H(23)N(2)O(2)P, the P atom has a distorted tetra-hedral configuration. The O atom of the OC(6)H(4)-4-CH(3) group and the N atoms show sp(2) character. In the crystal, adjacent mol-ecules are linked by N-H?O hydrogen bonds into helical chains parallel to the b axis.

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Project description:The P atom in the title mol-ecule, C(19)H(31)N(2)O(2)P, is in a distorted tetra-hedral configuration with the bond angles in the range 101.48?(10)-118.58?(9)°. The N-H units have a syn orientation with respect to one another. In the crystal, mol-ecules are connected via two different inter-molecular N-H?O(P) hydrogen bonds into chains along the a axis in which the O atom of the P=O group acts as a double acceptor.

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Project description:In the title compound, C(21)H(23)N(2)O(2)P, the P atom exhibits tetra-hedral coordination; the P-N bond lengths are relatively short [1.6297?(13) and 1.6424?(13)?Å]. In the crystal, adjacent mol-ecules are linked by N-H?O hydrogen bonds into a zigzag chain running along the c axis.

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Project description:The P atom in the title compound, C(19)H(18)NO(3)P, exhibits a distorted tetra-hedral configuration while the N atom shows a planar coordination. In the crystal, inter-molecular N-H?O hydrogen bonds form centrosymmetric dimers.

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Project description:The asymmetric unit of the title compound, C(19)H(18)NO(3)P, contains two independent mol-ecules in which the P atoms are found in slightly distorted tetrahedral environments. In the crystal, pairs of inter-molecular N-H⋯O(P) hydrogen bonds form two independent centrosymmetric dimers.

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(R(P))-Menthyl (1-hydroxy-cyclo-hexyl)phenyl-phosphinate.

Project description:The title compound, C(22)H(35)O(3)P, features a tetra-hedral P atom bonded to a phenyl ring, a hydroxy-cyclo-hexyl unit and the O atom of a menthyl group. The axial chirality at phospho-rus is R(P). In the crystal, mol-ecules are connected through O-H?O hydrogen bonds involving the hydr-oxy and P=O groups, forming chains along the 2(1) screw axis. The methyl groups of the isopropyl fragment in the menthyl unit are disordered over two sites of equal occupancy.

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