نتایج جستجو برای: extending rings

تعداد نتایج: 106954  

2012
Krzysztof Marciniec Andrzej Maślankiewicz Maria Nowak Joachim Kusz

In the title compound, C(9)H(8)N(2)O(2)S, the sulfamoyl NH(2) group is involved in intra-molecular N-H⋯N and inter-molecular N-H⋯O hydrogen bonding. In the crystal, molecules are linked via pairs of N-H⋯O hydrogen bonds, forming inversion dimers, which are further associated through π-π stacking inter-actions between the quinoline benzene rings [centroid-centroid distance = 3.649 (1) Å] into a ...

2013
Mousa Al-Noaimi Ismail Warad Salim F. Haddad Ahmad Husein Rami Shareiah

In the title compound, C15H14O3, the dihedral angle between the benzene rings is 75.85 (7)°. In the crystal, centrosymmetrically related mol-ecules are weakly associated through pairs of inter-actions between a benzene ring and an O atom of the ester group [ring centroid⋯O = 3.952 (7) Å], and through pairs of inter-actions between the other benzene ring and an O atom of the phen-oxy group [ring...

2012
Abdullah M. Asiri Nader E. Abo-Dya Muhammad Nadeem Arshad Muhammad Shafiq

In the title compound C(8)H(6)BrN(3)O, the benzotriazole ring is essentially planar (r.m.s. deviation = 0.0034 Å) and the bromo-acetyl unit is twisted at a dihedral angle of 15.24 (16)° with respect to it. In the crystal, pairs of C-H⋯O hydrogen bondings result in the formation of inversion dimers, forming R(2) (2)(12) rings, which are connected by further C-H⋯O inter-actions into chains extend...

2014
Patrycja A. Hopkins Renatus W. Sinkeldam Yitzhak Tor

A family of extended 5-modified-6-aza-uridines was obtained via Suzuki coupling reactions with a common brominated precursor. Extending the conjugated-6-aza-uridines with substituted aryl rings increases the push-pull interactions yielding enhanced bathochromic shifts and solvatochromism compared to the parent nucleosides. For example, the methoxy substituted derivative 1d displays λmax abs aro...

2011
Tahir Qadri Itrat Anis M. R. Shah Seik Weng Ng

In the title compound, C(47)H(54)N(6)O(2), the C-C-C bond angle between the rings is 108.40 (13)°. One aryl ring aligned at 38.5 (1)° with respect to the N-heterocyclic substituent and the other at 56.0 (1)° with respect to its substituent. In the crystal, adjacent mol-ecules are linked by C-H⋯N hydrogen bonds, forming a chain extending along the a axis.

2013
Chandra G. M. Raghavendra S. Jeyaseelan K. Mantelingu M. Mahendra

In the mol-ecule of the title compound, C21H14N2O3, the quinazoline ring system [maximum deviation = 0.076 (1) Å] makes dihedral angles of 40.57 (9) and 42.31 (11)°, respectively, with the phenyl and 1,3-benzodioxole rings. The dihedral angle between the phenyl ring and the 1,3-benzodioxole ring is 4.34 (10)°. In the crystal, C-H⋯O hydrogen bonds link the mol-ecules into infinite zigzag chains ...

2014
Yue-yuan Xue Yong-qi Qin

In the title compound, C15H10Br2, each mol-ecule is situated on special postion mm, so the asymmetric unit contains one-quater of a mol-ecule. The 2,7-di-bromo-9H-fluorene fragment and three spiro-cyclo-propane C atoms lie on different planes, which are perpendicular to each other. In the crystal, π-π inter-actions between aromatic rings [inter-centroid distance = 3.699 (3) Å] pack the mol-ecul...

2013
M. Prabhuswamy S. Viveka S. Madan Kumar G. K. Nagaraja N. K. Lokanath

The asymmetric unit of the title compound, C23H21N3, consists of two symmetry-independent and conformationally different mol-ecules [the comparable dihedral angles between the imidazole ring and the three benzene rings being 38.5 (2)/61.5 (3)/3.37 (17) and 45.8 (2)/36.01 (19)/46.94 (17)°]. In the crystal, inter-molecular imidazole N-H⋯N hydrogen-bonding inter-actions give a one-dimensional chai...

2015
Gihaeng Kang Jineun Kim Hansu Lim Tae Ho Kim

In the title compound, C22H19ClO4S2 [systematic name: 3-(2-chloro-4-mesylbenzo-yl)-4-(phenyl-sulfan-yl)bi-cyclo-[3.2.1]oct-3-en-2-one], which is an unclassified herbicide, the dihedral angle between the plane of the phenyl and chloro-benzene rings is 19.9 (2)°. In the crystal, C-H⋯O hydrogen bonds link adjacent mol-ecules, generating two-dimensional networks extending parellel to (011).

2010
V. Susindran S. Athimoolam S. Asath Bahadur B. Sridhar R. Manikannan S. Muthusubramanian

In the title compound C(18)H(14)N(2)O, the pendant rings make dihedral angles of 66.1 (1)° and 13.9 (1) with the central ring. In the crystal, two mol-ecules form a cyclic centrosymmetric R(2) (2)(22) dimer through pairs of C-H⋯O bonds. These dimers are further connected into zigzag chains extending along the b axis through C-H⋯π and C-H⋯O inter-actions.

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