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Your search keyword '"Huan-Qiu Li"' showing total 10 results
Start Over Author "Huan-Qiu Li" Journal acta crystallographica: section e
10 results on '"Huan-Qiu Li"'

1. Iodo­metronidazole.

Author

Yu-Min Yang, Huan-Qiu Li, Lei Shi, and Hai-Liang Zhu

Subjects
*PHYSICAL & theoretical chemistry, *IMIDAZOLES, *PYRIDINE, *CHLOROFORM, *NITRO compounds, *SOLVENTS
Abstract

In the title compound, 1-(2-iodo­ethyl)-2-methyl-5-nitro-1 H-imidazole, C6H8IN3O2, the dihedral angle between the imidazole ring and the nitro group attached to it is 7.8 (1)°. [ABSTRACT FROM AUTHOR]

Published
2005
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2. 1,4,8,11-Tetra­kis(carboxy­meth­yl)-5,5,7,12,12,14-hexa­meth­yl-1,4,8,11-tetra­azoniacyclo­tetra­deca­ne tetra­chloride octa­hydrate.

Author

Shi-Fan Wang, Huan-Qiu Li, Ban-Feng Ruan, Hai-Liang Zhu, and Seik Weng Ng

Subjects
*CRYSTALLOGRAPHY, *METHANOL, *CATIONS, *CHLORIDES, *IONS, *MOLECULES, *CRYSTALLIZATION, *HYDROGEN bonding
Abstract

The crystal structure of the centrosymmetric title compound, C24H48N4O84+·4Cl−·8H2O, consists of a 14-membered meth­yl-substituted C10N4 cationic ring which inter­acts with the chloride ions and water molecules of crystallization to give a three-dimensional hydrogen-bonded network structure. [ABSTRACT FROM AUTHOR]

Published
2005
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3. N-[Methoxy(4-nitrophenyl)methyl]pyridin-2-amine.

Author

Rui-Qin Fang, Huan-Qiu Li, Lei Shi, Zhu-Ping Xiao, and Hai-Liang Zhu

Subjects
*ORGANIC compounds, *CRYSTALS, *BENZENE, *AROMATIC compounds, *CHEMICAL bonds, *CRYSTALLOGRAPHY, *PHYSICAL & theoretical chemistry
Abstract

In the title compound, C13H13N3O3, the nitro group is twisted away from the attached benzene ring by 19.5 (3)°. The dihedral angle between the benzene and pyridine rings is 78.2 (1)°. In the crystal structure, molecules are connected into chains along the [001] direction by N—H...N hydrogen bonds. [ABSTRACT FROM AUTHOR]

Published
2007
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4. 7-Methoxy-3-(4-methoxyphenyl)-4-oxo-4 H-chromen-5-yl acetate.

Author

Huan-Qiu Li, LeiS hi, Zhu-Ping Xiao, and Hai-Liang Zhu

Subjects
*AROMATIC compounds, *CHEMICAL biology, *HETEROCYCLIC compounds, *ORGANIC compounds, *PHYSICAL organic chemistry, *AROMATIC fluorine compounds, *CYCLOBUTARENES
Abstract

In the genistein-related title compound, C19H16O6, the dihedral angle between the two benzene-ring planes is 52.81 (9)°. [ABSTRACT FROM AUTHOR]

Published
2007
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5. Benzene-1,2,3-triyl tris(benzenesulfonate).

Author

Zhu-Ping Xiao, Huan-Qiu Li, Lei Shi, Rui-Qin Fang, and Hai-Liang Zhu

Subjects
*AROMATIC compounds, *PROPERTIES of matter, *CHEMICAL biology, *HETEROCYCLIC compounds, *ORGANIC compounds, *PHYSICAL organic chemistry
Abstract

The title compound, C24H18O9S3, crystallizes with two molecules per asymmetric unit, with distinctly different conformations, as quantified by the C—O—S—C torsion angles. [ABSTRACT FROM AUTHOR]

Published
2007
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6. 5,7-Dimethoxy-3-(4-methoxyphenyl)-4 H-chromen-4-one.

Author

Huan-Qiu Li, Zhu-Ping Xiao, Yue Han, Rui-Qin Fang, and Hai-Liang Zhu

Subjects
*BENZENE, *X-rays, *MOLECULES, *MATHEMATICAL analysis, *NUMERICAL analysis, *PHYSICS
Abstract

In the genistein-related title molecule, C18H16O5, the dihedral angle between the two benzene rings is 59.25 (6)°. [ABSTRACT FROM AUTHOR]

Published
2007
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7. Chloro­metronidazole.

Author

Wen-Xia Pi, Yu-Min Yang, Huan-Qiu Li, and Hai-Liang Zhu

Subjects
*IMIDAZOLES, *METRONIDAZOLE, *PYRIDINE, *CHLOROFORM, *ANTIBACTERIAL agents, *HYDROXYL group
Abstract

In the title compound, 1-(2-chloro­ethyl)-2-methyl-5-nitro-1 H-imidazole, C6H8ClN3O2, the dihedral angle between the imidazole ring and the attached nitro group is 6.5 (1)°. [ABSTRACT FROM AUTHOR]

Published
2005
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8. Salicyl­idene­acetone.

Author

Shi-Fan Wang, Ban-Feng Ruan, Huan-Qiu Li, and Hai-Liang Zhu

Subjects
*ACETONE, *ALDEHYDES, *PHENYL compounds, *HYDROGEN bonding, *ORGANIC synthesis
Abstract

The title compound, ( E)-4-(2-hydroxy­phenyl)­but-3-en-2-one, C10H10O2, was synthesized from salicyl­aldehyde and acetone. The mol­ecule is essentially planar, suggesting a high degree of conjugation throughout the system. Intermolecular hydrogen bonds link adjacent mol­ecules to form one-dimensional chains. [ABSTRACT FROM AUTHOR]

Published
2005
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9. ( E)-4-Chloro-2-[(cyclopentylimino)methyl]phenol.

Author

Lei Shi, Rui-Qin Fang, Huan-Qiu Li, and Hai-Liang Zhu

Subjects
*DITHIOLE, *HYDROGEN-ion concentration, *CHEMICAL bonds, *PHYSICAL & theoretical chemistry, *ORGANIC compounds, *PHYSICAL organic chemistry
Abstract

The title molecule, C12H14ClNO, forms an intramolecular O—H...N hydrogen bond. [ABSTRACT FROM AUTHOR]

Published
2007
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10. 2-Methoxy-5-nitrobenzene-1,3-diyl bis(benzenesulfonate).

Author

Zhu-Ping Xiao, Rui-Qin Fang, Huan-Qiu Li, and Hai-Liang Zhu

Subjects
*AROMATIC compounds, *BENZENE, *CRYSTALLOGRAPHY, *PHYSICAL & theoretical chemistry, *PHYSICAL organic chemistry, *METHYL methacrylate
Abstract

In the title molecule, C19H15NO9S2, the dihedral angle between the nitro group and the benzene ring to which it is attached is 11.68 (8)°. The N—C bond length of 1.466 (3) Å indicates that no conjugation exists between the nitro group and the benzene ring. [ABSTRACT FROM AUTHOR]

Published
2007
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