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In the title compound, C11H13NOS, the thio­phene ring is planar while the central six-membered ring has a half-chair conformation and the second ring of the quinolizine moiety is in a chair conformation. The angles at the N atom sum to 331.22°, indicating pyramidalization of this atom.

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The crystal structure of the title compound, C18H19N3O3S, is formed by single mol­ecules linked by N—H...O hydrogen bonds into infinite linear chains along the ac diagonal. The thio­phene ring is nearly planar and is approximately perpendicular to the mean plane of the 1,4-di­hydro­pyridine ring. The ester group has a trans geometry with respect to the adjacent ring double bond. The di­hydro­pyridine and pyrrole rings are coplanar.

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In the title octahedral complex, [Cu{N(CN)2}2(ampym)2]n (ampym is 4-amino­pyrimidine, C4H5N3), the Cu atom is located on an inversion centre and is coordinated in the equatorial plane by two dicyan­amide nitrile N atoms and two N atoms from ampym ligands [Cu—N = 1.972 (2) and 2.001 (2) Å, respectively], and in the axial positions by another two dicyan­amide nitrile N atoms, at 2.633 (2) Å. Neighbouring Cu atoms are connected via double dicyan­amide bridges to form a one-dimensional infinite chain.

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The crystal structure of the title compound, C13H13NO3, is stabilized by dipole-dipole and van der Waals forces. The pyrrolidine ring is almost planar, while the central six-membered ring of the indolizine moiety adopts a sofa conformation.
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