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Trans-1-Phenyl-pyrrolidine-2,5-dicarbo-nitrile.

ABSTRACT: In the title compound, C(12)H(11)N(3), the plane of the phenyl ring and the least-squares plane of the pyrrolidine ring enclose an angle of 14.30 (6)°. The intra-cyclic N atom features a nearly trigonal-planar coordination geometry due to π-inter-actions with the aromatic system. The pyrrolidine ring is present in a twist conformation for which the closest pucker descriptor is (C9)T(C8). Weak inter-molecular C-H⋯N and C-H⋯π contacts occur.

SUBMITTER: Han W

PROVIDER: S-EPMC2979938 | biostudies-literature |

REPOSITORIES: biostudies-literature

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1'-Methyl-2-oxo-5'-phenyl-spiro-[indoline-3,3'-pyrrolidine]-4',4'-dicarbo-nitrile.

Project description:The title spiro-compound, C(20)H(16)N(4)O, crystallizes with four independent mol-ecules in the asymmetric unit. In all of them, the oxindole unit is planar, the r.m.s. deviations ranging from 0.07 to 0.08?Å, while the pyrrolinyl ring adopts an envelope conformation (with the N atom representing the flap). In the crystal, adjacent mol-ecules are linked by N-H?N and N-H?O hydrogen bonds.

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Project description:The asymmetric unit of the title compound, C10H6N2S2, contains two crystallographically independent but conformationally similar mol-ecules. The fused thio-phene ring cores are almost planar [maximum deviation = 0.027?(3)?Å] with the thio-phene rings forming dihedral angles of 0.5?(4)° in one mol-ecule and 1.91?(4)° in the other. The crystal packing is stabilized only by van der Waals inter-actions.

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Crystal structure of 4'-bromo-2,5-dihy-droxy-2',5'-dimeth-oxy-[1,1'-biphen-yl]-3,4-dicarbo-nitrile.

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Pyrrolidine-2,5-dione.

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