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4-(2,4-Dichloro-phen-yl)-5,5-dimethyl-2-(3-silatranyl-propyl-mino)-1,3,2-dioxa-phospho-rinane 2-oxide.

ABSTRACT: In the title compound, C(20)H(31)Cl(2)N(2)O(6)PSi, the dioxaphospho-rinane ring adopts a cis conformation. The silatrane fragment forms a cage-like structure in which there exists an intra-molecular Si-N donor-acceptor bond. In the crystal, centrosymmetrically related mol-ecules are linked by pairs of N-H⋯O hydrogen bonds into inversion dimers, generating rings with graph-set motif R(2) (2)(8). The dimers are further connected into ribbons parallel to the a axis by inter-molecular C-H⋯O hydrogen bonds.

SUBMITTER: Liu ZR

PROVIDER: S-EPMC3238936 | biostudies-literature |

REPOSITORIES: biostudies-literature

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(S)-2-[(2,4-Dichloro-phen-yl)(hy-droxy)meth-yl]-5,5-dimethyl-1,3,2-dioxa-phosphinane 2-oxide.

Project description:In the title mol-ecule, C(12)H(15)Cl(2)O(4)P, the cyclic dioxaphosphinane ring adopts a chair conformation. In the crystal, inter-molecular O-H?O hydrogen bonds link the mol-ecules into chains propagating along the b axis.

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Methyl 2-(5,5-dimethyl-1,3,2-dioxa-borinan-2-yl)-4-nitro-benzoate.

Project description:The six-membered boronate ester ring of the title compound, C(13)H(16)BNO(6), adopts an envelope conformation with the C atom bearing the dimethyl substituents at the flap. The O-B-C-C torsion angles between the boronate group and the benzene ring are 72.5?(2) and 81.0?(2)°. The 4-nitro-benzoate unit adopts a slightly twisted conformation, with dihedral angles between the benzene ring and the nitrate and methyl ester groups of 17.5?(2) and 14.4?(3)°, respectively. In the crystal, inversion-related pairs of mol-ecules show weak ?-? stacking inter-actions [centroid-centroid distance = 4.0585?(9)?Å and inter-planar spacing = 3.6254?(7)?Å].

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5,5'-[(2,4-Dichloro-phen-yl)methyl-ene]bis-(2,2-dimethyl-1,3-dioxane-4,6-dione).

Project description:The title compound, C(19)H(18)Cl(2)O(8), was prepared by the reaction of 2,2-dimethyl-1,3-dioxane-4,6-dione and 2,4-dichloro-benzaldehyde in ethanol. The two 1,3-dioxane rings exhibit boat conformations. In the crystal, mol-ecules are linked by weak inter-molecular C-H?O and C-H?Cl hydrogen bonds, forming chains parallel to the a axis.

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N-(2,4-Dichloro-phen-yl)-2,4-dimethyl-benzene-sulfonamide.

Project description:In the title compound, C(14)H(13)Cl(2)NO(2)S, the mol-ecule is bent at the S atom with an C-SO(2)-NH-C torsion angle of -69.9?(2)°. The dihedral angle between the sulfonyl and aniline benzene rings is 44.0?(1)°. The crystal structure features inversion dimers linked by pairs of N-H?O hydrogen bonds. An intra-molecular N-H?Cl hydrogen bond is also observed.

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2,4-Dichloro-N-(2,4-dimethyl-phen-yl)benzene-sulfonamide.

Project description:In the title compound, C(14)H(13)Cl(2)NO(2)S, the C-SO(2)-NH-C torsion angle is -71.4?(4)°. The sulfonyl and aniline benzene rings are tilted relative to one another by 44.6?(1)°. The crystal structure features inversion-related dimers linked by pairs of N-H?O hydrogen bonds.

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Bis(2,4-dichloro-phen-oxy-acetato-?O,O)(5,5'-dimethyl-2,2'-bipyridine-?N,N')cobalt(II).

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2,4,5-Triphenyl-1,3,2-dioxa-phospho-lan-2-one.

Project description:The dioxaphospho-lane ring in the title compound, C(20)H(17)O(3)P, adopts an envelope conformation about one of the ring carbons. The benzene rings of the compound do not form face-to-face ?-? inter-actions, instead weak C-H?? inter-actions occur between adjacent mol-ecules. The methine H atoms on the dioxaphospho-lane ring form weak C-H?O hydrogen bonds to the oxide group of an adjacent mol-ecule.

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Crystal structure of 2-chloro-1,3-bis-(2,6-diiso-propyl-phen-yl)-1,3,2-di-aza-phospho-lidine 2-oxide.

Project description:The title compound, C26H38ClN2OP, was synthesized by reacting phosphoryl chloride with N,N'-bis-(2,6-diiso-propyl-phen-yl)ethane-1,2-di-amine in the presence of N-methyl-morpholine which acted as an auxilliary base to quench the HCl released as a by-product. The resultant N-heterocyclic phosphine five-membered ring adopts a half-chair conformation and features a tetra-coordinate P atom ligated by the chelating di-amine [P-N = 1.6348 (14) and 1.6192 (14) Å], one double-bonded O atom [P1-O1 = 1.4652 (12) Å] and one Cl atom [P1-Cl1 = 2.0592 (7) Å]. The sterically hindered 2,6-diiso-propyl-phenyl (Dipp) groups twist away from the central heterocycle, with torsion angles of -75.66 (19) and 83.39 (19)° for the P-N-Car-Car links. A number of intra-molecular C-H⋯N, C-H⋯O and C-H⋯Cl close contacts occur. In the crystal, mol-ecules are linked by C-H⋯O hydrogen bonds to generate [010] chains. C-H⋯π inter-actions are also observed.

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4,4,5,5-Tetra-methyl-1,3,2?-dioxa-phospho-lan-2-one.

Project description:The five-membered ring in the title compound, C(6)H(13)O(3)P, exists in an envelope conformation with one of the ring C atoms at the flap position. The coordination geometry around the P atom is a distorted tetra-hedron. The crystal structure is stabilized by several weak C-H?O and P-H?O hydrogen bonds, forming a three-dimensional network.

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N-(2,3-Dichloro-phen-yl)-2,4-dimethyl-benzene-sulfonamide.

Project description:In the title compound, C(14)H(13)Cl(2)NO(2)S, the dihedral angle between the two aromatic rings is 70.4?(1)°. The mol-ecular conformation is stabilized by an intra-molecular N-H?Cl hydrogen bond.

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