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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.

ABSTRACT: In the title compound, C(18)H(17)N(3)O(4), the furyl and phenyl rings are inclined at almost right angles [85.77?(7) and 63.25?(7)°, respectively] to the central imidazo[1,2-a]pyridinyl unit. The structure displays both inter- and intra-molecular N-H?O hydrogen bonding.

SUBMITTER: Yaqub M

PROVIDER: S-EPMC2969857 | biostudies-other | 2009

REPOSITORIES: biostudies-other

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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.

Yaqub Muhammad M Shafiq Zahid Z Qureshi Ashfaq M AM Najam-Ul-Haq Muhammad M

Acta crystallographica. Section E, Structure reports online 20090829 Pt 9

In the title compound, C(18)H(17)N(3)O(4), the furyl and phenyl rings are inclined at almost right angles [85.77 (7) and 63.25 (7)°, respectively] to the central imidazo[1,2-a]pyridinyl unit. The structure displays both inter- and intra-molecular N-H⋯O hydrogen bonding. ...[more]

PMID: 21577676

Similar Datasets

(4-Fluoro-phen-yl)[6-(2-fur-yl)-7-nitro-2,3,4,6,7,8-hexa-hydro-1H-pyrido[1,2-a]pyrimidin-9-yl]methanone.

Project description:In the title compound, C(19)H(18)FN(3)O(4), the fused pyridine and pyrimidine rings adopt half-chair conformations. The structure displays intra-molecular N-H?O and inter-molecular N-H?F hydrogen bonding.

| S-EPMC2977271 | biostudies-literature

Crystal structure and Hirshfeld surface analysis of phen-yl(5,7,8a-triphenyl-1,2,3,7,8,8a-hexa-hydro-imidazo[1,2-a]pyridin-6-yl)methanone with an unknown solvent.

Project description:In the title compound, C32H28N2O, the imidazolidine and pyridine rings of the central hexa-hydro-imidazo[1,2-a]pyridine ring system adopt envelope and screw-boat conformations, respectively. The mol-ecule exhibits two weak intra-molecular ?-? inter-actions between phenyl rings. In the crystal, mol-ecules are linked via pairs of C-H? O hydrogen bonds, forming inversion dimers. The dimers are further linked by pairs of C-H?? inter-actions, forming infinite chains along the c-axis direction. A Hirshfeld surface analysis indicates that the most important contributions to the crystal packing are from H?H (73.4%), C?H/H?C (18.8%) and O?H/H?O (5.7%) contacts. The contribution of some disordered solvent to the scattering was removed using the SQUEEZE routine [Spek (2015 ?). Acta Cryst. C71, 9-18] in PLATON. The solvent contribution was not included in the reported mol-ecular weight and density.

| S-EPMC7405580 | biostudies-literature

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

Project description: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.

| S-EPMC3007961 | biostudies-literature

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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[6-(Furan-2-yl)-7-nitro-2,3,4,6,7,8-hexa-hydro-1H-pyrido[1,2-a]pyrimidin-9-yl](phen-yl)methanone.

Project description:The asymmetric unit of the title compound, C19H19N3O4, contains two mol-ecules with very few conformational differences; a C atom in the pyrimidine ring in one of the mol-ecules is disordered in a 0.688?(15):0.312?(15) ratio. In both mol-ecules, the fused pyridine and pyrimidine rings adopt half-chair conformations. The dihedral angles between the furan and benzene rings are 81.00?(13) and 84.99?(10)° in the two mol-ecules. The mol-ecular structure is consolidated by intra-molecular N-H?O hydrogen bonding. In the crystal, C-H?O hydrogen bonds connect the molecules into a three-dimensional network.

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1-[(6-Chloro-3-pyrid-yl)meth-yl]-5-eth-oxy-8-nitro-1,2,3,5,6,7-hexa-hydro-imidazo[1,2-a]pyridine.

Project description:In the title compound, C(15)H(19)ClN(4)O(3), an active agrochemical possessing insecticidal activity, the dihedral angle between the mean planes passing through the pyridine ring and the five-membered ring is 87.3?(2)°. The fused pyridine ring adopts a twisted sofa conformation. The mol-ecular structure features close intra-molecular C-H?N and C-H?O hydrogen bonding.

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[3-(5-Nitro-2-fur-yl)-1-phenyl-1H-pyrazol-4-yl](phen-yl)methanone.

Project description:In the title pyrazole compound, C(20)H(13)N(3)O(4), an intra-molecular C-H?O hydrogen bond generates a seven-membered ring, producing an S(7) ring motif. The essentially planar furan and pyrazole rings [maximum deviations of 0.002?(1) and 0.007?(1)?Å, respectively] are coplanar with each other, forming a dihedral angle of 3.06?(10)°. The pyrazole ring forms dihedral angles of 8.51?(9) and 56.81?(9)° with the two benzene rings. The nitro group is coplanar with the attached furan ring, as indicated by the dihedral angle of 2.5?(3)°. In the crystal packing, inter-molecular C-H?O hydrogen bonds link adjacent mol-ecules into two-mol-ecule-wide chains along the a axis. The crystal packing is further stabilized by weak inter-molecular C-H?? and ?-? inter-actions [centroid-centroid distance = 3.4441?(10)?Å].

| S-EPMC2979013 | biostudies-literature

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.

Project description:In the title compound, C16H19ClN4O3, the cyclo-hexane ring displays a chair formation and the tetra-hydro-pyridine ring displays an envelope conformation with the methyl-ene C atom as the flap; the imidazolidine ring also displays an envelope conformation with a methyl-ene C atom as the flap. In the crystal, O-H?N hydrogen bonds between hy-droxy groups and pyridine rings link inversion-related mol-ecules into dimers. Weak C-H?O hydrogen bonds further link the dimers into supra-molecular chains running along the c axis.

| S-EPMC3772455 | biostudies-literature

(4-Methyl-phen-yl)[1-(4-methyl-phen-yl)-3-(5-nitro-2-fur-yl)-1H-pyrazol-4-yl]methanone.

Project description:In the title pyrazole compound, C(22)H(17)N(3)O(4), an intra-molecular C-H?O contact generates a seven-membered ring, producing an S(7) ring motif. The furan and pyrazole rings are essentially planar [maximum deviations = 0.004?(1) and 0.004?(2)?Å, respectively] and are almost coplanar, making a dihedral angle of 3.75?(10)°. One of the methyl-phenyl groups is inclined to the pyrazole ring, as indicated by the dihedral angle of 48.41?(9)°. In the crystal structure, mol-ecules are linked into chains along [10] by C-H?O contacts. The crystal structure is further stabilized by ?-? inter-actions [centroid-centroid distance = 3.4437?(10)?Å].

| S-EPMC2972131 | biostudies-literature

(4-Chloro-phen-yl)[1-(4-methoxy-phen-yl)-3-(5-nitro-2-fur-yl)-1H-pyrazol-4-yl]methanone.

Project description:In the title compound, C(21)H(14)ClN(3)O(5), an intra-molecular C-H?O hydrogen bond generates an S(7) ring motif and the furan and pyrazole rings are almost coplanar, making a dihedral angle of 1.98?(5)°. The pyrazole ring is inclined at dihedral angles of 47.59?(4) and 7.27?(4)° to the chloro-phenyl and methoxy-phenyl groups, respectively. The nitro group is almost coplanar to its attached furan ring [dihedral angle = 2.03?(12)°]. In the crystal, inter-molecular C-H?O hydrogen bonds link the mol-ecules into a three-dimensional network. The crystal structure also features short inter-molecular O?N [2.8546?(12)?Å] and Cl?O [3.0844?(9)?Å] contacts as well as aromatic ?-? stacking inter-actions [centroid-centroid distance = 3.4367?(6)?Å].

| S-EPMC2979246 | biostudies-literature

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