نتایج جستجو برای: substituted benzene

تعداد نتایج: 57887  

Journal: :journal of physical & theoretical chemistry 2015
pouya karimi

stability of the π-π stacking interactions in the ben||substituted-coronene and hfben||substituted-coronene complexes was studied using the computational quantum chemistry methods (where ben and hfben are benzene and hexaflourobenzene, || denotes π-π stacking interaction, substituted-coronene is coronene molecule which substituted with four x groups, and x= nh2, ch3, oh, h, f, cf3, cn and no). ...

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.

2010
R. Prasath S. Sarveswari V. Vijayakumar T. Narasimhamurthy Edward R. T. Tiekink

The conformation about the ethene bond [1.316 (3) Å] in the title compound, C(25)H(18)BrNO, is E. The quinoline ring forms dihedral angles of 67.21 (10) and 71.68 (10)° with the benzene and bromo-substituted benzene rings, respectively. Highlighting the non-planar arrangement of aromatic rings, the dihedral angle formed between the benzene rings is 58.57 (12)°.

2011
Tara Shahani Hoong-Kun Fun V. Vijayakumar R. Venkat Ragavan S. Sarveswari

The asymmetric unit of the title compound, C(23)H(23)ClFN(5)O(2), contains two crystallographically independent mol-ecules. In one mol-ecule, the pyrazole ring makes dihedral angles of 43.93 (7) and 35.82 (7)°, respectively, with the fluoro- and chloro-substituted benzene rings, while the corresponding angles in the other mol-ecule are 52.26 (8) and 36.85 (7)°. The piperazine rings adopt chair ...

2012
Rajni Kant Vivek K. Gupta Kamini Kapoor S. Samshuddin B. Narayana

In the title compound, C(35)H(32)N(4)O(4), the pyrazole ring forms a dihedral angle of 15.04 (8)° with the adjacent pyrimidine ring. The pyrimidine ring forms dihedral angles of 9.95 (8) and 1.86 (7)° with its adjacent meth-oxy-substituted benzene rings, whereas the equivalent angles are 80.24 (9) and 11.55 (9)° for the pyrazole ring and its adjacent benzene rings. The crystal packing features ...

2008
Muhammad Hanif Ghulam Qadeer Nasim Hasan Rama Ales Ruzicka

In the title compound, C(17)H(17)N(3)O(2)S, the five-membered ring forms dihedral angles of 53.02 (3) and 78.57 (3)° with the 3-meth-oxy-substituted and 2-meth-oxy-substituted benzene rings, respectively. In the crystal structure, mol-ecules are linked into centrosymmetric dimers via inter-molecular N-H⋯S hydrogen bonds.

2013
Rodolfo Moreno-Fuquen Fabricio Mosquera Javier Ellena Juan C. Tenorio Carlos A. De Simone

In the title benzoate derivative, C13H6ClN3O8, the planes of the benzene rings form a dihedral angle of 63.46 (5)°. The dihedral angles between the benzene ring and its nitro groups are 12.78 (16)° for the first ortho, 28.4 (4) and 17.4 (4)° for the second (disordered) ortho and 3.58 (16)° for the para nitro group. The central ester moiety, -C-(C=O)-O-, is essentially planar (r.m.s. deviation f...

2012
Hoong-Kun Fun Tze Shyang Chia Mashooq A. Bhat Mohamed A. Al-Omar Hatem A. Abdel-Aziz

In the title compound, C(20)H(19)N(3)OS, the central benzene ring makes dihedral angles of 45.36 (9) and 55.33 (9)° with the thio-phene ring and the dimethyl-substituted benzene ring, respectively. The dihedral angle between the thio-phene ring and dimethyl-substituted benzene ring is 83.60 (9)°. The thio-phene ring and the benzene ring are twisted from the mean plane of the C(=O)-N-N=C bridge ...

2012
Chin Wei Ooi Hoong-Kun Fun Ching Kheng Quah Murugan Sathishkumar Alagusundaram Ponnuswamy

The title compound, C(21)H(19)ClN(2)OS, exists in a cis conformation with respect to the N=C bond [1.2608 (13) Å]. The cyclo-hexene ring adopts a distorted half-chair conformation. The thia-zolidine ring is close to being planar (r.m.s. deviation = 0.057 Å) and makes dihedral angles of 62.92 (6) and 56.32 (6)°, respectively, with the benzene ring and the chloro-substituted benzene ring. The dih...

Stability of the π-π stacking interactions in the Ben||substituted-coronene and HFBen||substituted-coronene complexes was studied using the computational quantum chemistry methods (where Ben and HFBen are benzene and hexaflourobenzene, || denotes π-π stacking interaction, substituted-coronene is coronene molecule which substituted with four X groups, and X= NH2, CH3, OH, H, F, CF3, CN and NO). ...

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