نتایج جستجو برای: ring inversion

تعداد نتایج: 164449  

2009
Jin-Sheng Gao Ying Liu Shuang Zhang Guang-Feng Hou Peng-Fei Yan

In the title compound, C(18)H(16)N(2)O(2), the phenyl-ene ring is located on inversion center. The pyridyl ring makes a dihedral angle of 39.9 (1)° with the phenyl-ene ring. In the crystal, adjacent mol-ecules are linked by inter-molecular C-H⋯N hydrogen bonds, forming a linear chain along the a axis.

2011
Cheng-Li Song Ke Liu Ai-Jiang Zhang Zhu-Guo Xu Hao-Li Zhang

In the title compound, C(30)H(38)O(4)S(2), the centroid of the benzene ring lies on a center of inversion. The thio-phene ring is aligned at 49.8 (1)° with respect to the benzene ring. The alkyl chain adopts an extended zigzag conformation.

2014
Cynthia E. Theodore S. Naveen S. B. Benaka Prasad M. Madaiah C. S. Ananda Kumar N. K. Lokanath

In the title compound, C15H18N2O2S, the 2,3-di-hydro-1-benzo-thio-pyran ring adopts a sofa conformation and the hydantoin ring is twisted with respect to the benzene ring at 78.73 (17)°. In the crystal, pairs of N-H⋯O hydrogen bonds link the mol-ecules into inversion dimers.

2011
A. Chitradevi S. Athimoolam S. Asath Bahadur S. Indumathi S. Perumal

In the title compound, C(26)H(31)NO(6)S, the five-membered pyrrolidine ring adopts an envelope conformation and the six-membered thia-zine ring is in a distorted chair conformation. The crystal packing is stabilized through an inter-molecular C-H⋯O inter-action, generating inversion-related R(2) (2)(10) ring motifs.

2012
Uzma Ashiq Rifat Ara Jamal Hina Ismail Khalid Mohammed Khan Sammer Yousuf

In the title compound, C16H15N3O, the dihedral angle between the indole ring system (r.m.s. deviation = 0.020 Å) and the phenyl ring is 14.49 (9)°. The mol-ecular conformation is supported by an intra-molecular C-H⋯O inter-action, which closes an S(7) ring. In the crystal, inversion dimers linked by pairs of N-H⋯O hydrogen bonds generate R2(2)(8) loops.

2011
Xiu-Huan Zhan Zi-Yun Wang

In the title compound, C(17)H(13)ClN(4)OS, the 1,3,4-thia-diazole ring makes dihedral angles of 9.70 (15) and 7.22 (10)° with the benzene and phenyl rings, respectively; the dihedral angle between these two rings is 6.37 (19)°. In the crystal, pairs of N-H⋯N and C-H⋯O hydrogen bonds between inversion-related mol-ecules result in supra-molecular ribbons displaying alternate R(2) (2)(8) and R(2) ...

2012
Hoong-Kun Fun Ching Kheng Quah Dongdong Wu

In the title mol-ecule, C(23)H(18)O(5), the meth-oxy-substituted benzene ring makes dihedral angles of 65.12 (4) and 88.55 (4)° with the other two benzene rings. These two benzene rings form a dihedral angle of 45.70 (4)°. In the crystal, mol-ecules are linked into inversion dimers by pairs of weak C-H⋯O hydrogen bonds.

2011
K. Shakuntala Sabine Foro B. Thimme Gowda

The title compound, C(14)H(14)ClNO(2)S, contains two molecules in the asymmetric unit with different conformations. The C-SO(2)-NH-C torsion angles are 65.3 (2) and 54.6 (2)° and the aromatic rings are tilted relative to each other by 59.3 (1) and 45.8 (1)° in the two mol-ecules. In the crystal, inversion symmetry results in dimers linked by pairs of N-H⋯O hydrogen bonds for both molecules.

2014
Hong Dae Choi Pil Ja Seo Uk Lee

In the title compound, C18H17BrO2S, the dihedral angle between the methyl-phenyl ring and the mean plane of the benzo-furan rung system is 87.0 (2)°. In the crystal, mol-ecules related by inversion are paired into dimers via C-H⋯O and C-H⋯π inter-actions. These dimers are further linked by C-H⋯O hydrogen bonds and π-π inter-actions between the benzene and furan rings of neighbouring mol-ecules ...

2012
P. A. Suchetan Sabine Foro B. Thimme Gowda

In the title compound, C(14)H(12)N(2)O(5)S, the conformation between the N-H group and the ortho-nitro group in the sulfonyl benzene ring is syn and that between the C=O and meta-methyl groups in the benzoyl ring is anti. The mol-ecule is twisted at the S-N bond with a torsion angle of 64.3 (2)°. The dihedral angle between the sulfonyl benzene ring and the -SO(2)-NH-C-O segment is 75.73 (7)° an...

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