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Your search keyword '"Hua, Zheng"' showing total 2 results
Start Over Author "Hua, Zheng" Topic chemical bonds Topic molecular structure
2 results on '"Hua, Zheng"'

1. Ethyl 5-amino-3-(4,6-dimethyl- pyrimidin-2-ylamino)-1-methyl-1H- pyrazole-4-carboxylate and ethyl 5-amino-3-(4,6-dimethylpyrimidin- 2-ylamino)-1-(2-nitrophenylsulfonyl)- 1H-pyrazole-4-carboxylate.

Author

Chao Wu, You-Quan Zhu, Hua-Bin Li, Jian-Rong Li, Xue-Ling Ren, Bin Li, and Hua-Zheng Yang

Subjects
MOLECULAR structure, PYRAZOLES, INTERMOLECULAR forces, HYDROGEN bonding, CHEMICAL structure, CHEMICAL bonds, MOLECULAR association, MOLECULES, PHYSICAL & theoretical chemistry
Abstract

The molecular structures of ethyl 5-amino-3-(4,6-dimethylpyrimidin-2-ylamino)-1-methyl-1H-pyrazole-4-carboxylate, C13H18N6O2, (I), and ethyl 5-amino-3-(4,6-dimethylpyrimidin-2-ylamino)-1-(2-nitrophenylsulfonyl)-1H-pyrazole-4-carboxylate, C18H19N7O6S, (II), have been determined. There are two intramolecular N—H…O bonds and one intermolecular N—H…O hydrogen bond in (I). The rings formed by the N—H…O hydrogen bonds are almost planar. In (II), three intramolecular N—H…O hydrogen bonds exist. [ABSTRACT FROM AUTHOR]

Published
2005
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2. 3-(4-Methyl­phen­yl)-2-(1-pyrid­yl)-3 H-benzo[4,5]furo[3,2- d]pyrimidin-4-one.

Author

Yang-Gen Hu, Ai-Hua Zheng, and Gui-Hua Li

Subjects
*PYRIMIDINES, *CRYSTALS, *CHEMICAL structure, *HYDROGEN bonding, *MOLECULAR structure, *CHEMICAL bonds
Abstract

In the crystal structure of the title compound, C22H21N3O2, the packing of the mol­ecules is mainly governed by inter­molecular C—H⋯O hydrogen bonds and π–π inter­actions. [ABSTRACT FROM AUTHOR]

Published
2006
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