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1-(2,2-Dimeth-oxy-eth-yl)-8-nitro-1,2,3,5,6,7-hexa-hydro-imidazo[1,2-a]pyridin-5-ol.

ABSTRACT: In the title compound, C(11)H(19)N(3)O(5), the six-membered ring displays a half-chair conformation and the imidazolidine ring is essentially planar (r.m.s. deviation = 0.088 Å). An inter-molecular hydrogen bond between the hy-droxy O atom and a nitro O atom stabilizes the crystal packing.

SUBMITTER: Tian Z

PROVIDER: S-EPMC3007961 | biostudies-literature |

REPOSITORIES: biostudies-literature

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[5-(2-Fur-yl)-6-nitro-1,2,3,5,6,7-hexa-hydro-imidazo[1,2-a]pyridin-8-yl](phen-yl)methanone.

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1-[(1,3-Dithio-lan-2-yl)meth-yl]-6-methyl-8-nitro-1,2,3,5,6,7-hexa-hydro-imidazo[1,2-c]pyrimidine.

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1-[(1,3-Dithio-lan-2-yl)meth-yl]-8-nitro-6-propyl-1,2,3,5,6,7-hexa-hydro-imidazo[1,2-c]pyrimidine.

Project description:In the title compound, C(13)H(22)N(4)O(2)S(2), the six-membered ring displays a half-chair conformation. The olefin amine unit is close to being coplanar with the imidazolidine ring (r.m.s. deviation = 0.059 Å). The dithiol-ane ring adopts a twisted conformation. In the crystal, mol-ecules are linked by weak C-H⋯O inter-actions.

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1-[(6-Chloro-pyridin-3-yl)meth-yl]-10-nitro-1,2,3,5,6,7,8,9-octa-hydro-5,9-methano-imidazo[1,2-a]azocin-5-ol.

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8-{(E)-[(4-Chloro-phen-yl)imino]-meth-yl}-1,1,7,7-tetra-methyl-1,2,3,5,6,7-hexa-hydro-pyrido[3,2,1-ij]quinolin-9-ol.

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Project description: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.

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Crystal structure and Hirshfeld surface analysis of 5,7-diphenyl-1,2,3,5,6,7-hexa-hydro-imidazo[1,2-<i>a</i>]pyridine-6,6,8-tricarbo-nitrile methanol mono-solvate.

Project description:In the title compound, C22H17N5·CH4O, the imidazolidine ring of the 1,2,3,5,6,7-hexa-hydro-imidazo[1,2-a]pyridine ring system is a twisted envelope, while the 1,2,3,4-tetra-hydro-pyridine ring adopts a twisted boat conformation. In the crystal, pairs of mol-ecules are linked by O-H⋯N and N-H⋯O hydrogen bonds via two methanol mol-ecules, forming a centrosymmetric R 4 4(16) ring motif. These motifs are connected to each other by C-H⋯N hydrogen bonds and form columns along the a axis. The columns form a stable mol-ecular packing, being connected to each other by van der Waals inter-actions. A Hirshfeld surface analysis indicates that the most significant contributions to the crystal packing are from H⋯H (43.8%), N⋯H/H⋯N (31.7%) and C⋯H/H⋯C (18.4%) contacts.

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(R)-(+)-Dimeth-yl[4-oxido-2-oxo-1-(1-phenyl-eth-yl)-1,2,5,6-tetra-hydro-pyridin-3-yl]sulfonium.

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