2,2′-(1,3,5,7-Tetraoxo-1,2,3,5,6,7-hexahydropyrrolo[3,4-f]isoindole-2,6-diyl)diacetic acid N,N-dimethylformamide disolvate
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چکیده
The asymmetric unit of the title compound, C(14)H(8)N(2)O(8)·2C(3)H(7)NO or L·2DMF (DMF = N,N-dimethyl-formamide), contains one half of the centrosymmetric mol-ecule L and one solvent mol-ecule, which is disordered between two orientations in a 0.555 (4):0.445 (4) ratio. Inter-molecular O-H⋯O hydrogen bonds link one L and two DMF mol-ecules into a centrosymmetric hydrogen-bonded cluster. The crystal packing is further stabilized by weak inter-molecular C-H⋯O hydrogen bonds.
منابع مشابه
3,3′-(1,3,5,7-Tetraoxo-2,3,6,7-tetrahydro-1H,5H-pyrrolo[3,4-f]isoindole-2,6-diyl)dipropanoic acid N,N-dimethylformamide disolvate
In the title compound, C(16)H(12)N(2)O(8)·2C(3)H(7)NO, the complete tricyclic compound is generated by a crystallographic centre of symmetry. In the crystal, the tricycle is linked to two adjacent N,N-dimethyl-formamide solvent mol-ecules by O-H⋯O hydrogen bonds.
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In the title salt, C24H22N4O4 (2+)·2NO3 (-), the cation is U-shaped with the two iso-indole dione rings inclined to one another by 60.41 (13)°, while the two outer pyridine rings are inclined to one another by 2.77 (12)°. The dihedral angles between the pyridine ring and the adjacent iso-indole dione ring are 71.82 (12) and 86.44 (13)°. In the crystal, each nitrate anion is linked to a protonat...
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The complete molecule of the title compound, C(13)H(13)N(5)O(6)·2C(3)H(7)NO, is generated by crystallographic twofold rotation with an N and a C atom lying on the axis. The structure is stabilized by inter-molecular O-H⋯O hydrogen bonds.
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In the title compound, C(26)H(20)N(2)O(4), the central isoindole core is almost planar (r.m.s. deviation = 0.043 Å). The phenyl rings lie to either side of the plane [dihedral angles = 88.64 (5) and 67.74 (6)°] and the dihedral angle between the phenyl rings is 63.39 (7)°. In the crystal, mol-ecules are linked by C-H⋯O inter-actions; notably, one carbonyl O atom accepts three such bonds.
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The asymmetric unit of the title compound, C(12)H(10)N(4)O(2)Se(2)·2C(3)H(7)NO, contains two solvent mol-ecules and two half mol-ecules of the dinicotinamide, each of which sits on a center of symmetry passing through the middle of the Se-Se bond. In each mol-ecule, the two pyridyl groups and diseleno group are approximately coplanar (r.m.s. deviations from planarity for all non-H atoms = 0.011...
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