نتایج جستجو برای: pyridopyrimidine 5 carbohydrazide

تعداد نتایج: 1216072  

2012
Hatem A. Abdel-Aziz Hazem A. Ghabbour Suchada Chantrapromma Hoong-Kun Fun

In the asymmetric unit of the title benzofuran derivative, C(10)H(10)N(2)O(2), there are three crystallograpically independent mol-ecules, which are slightly twisted; the dihedral angle between the benzofuran ring system and the plane of the carbohydrazide unit is 8.64 (11)° in one mol-ecule, whereas the dihedral angles are 9.58 (11) and 6.89 (10)° in the other two mol-ecules. In the crystal, t...

Journal: :Acta Crystallographica Section E Structure Reports Online 2009

2009
Yan-Xian Jin

The mol-ecule of the title compound, C(12)H(10)N(4)O(4), displays an E configuration about the C=N bond. The dihedral angle between the benzene and isoxazole rings is 1.36 (5)° and the mol-ecular conformation is stabilized by the an intra-molecular C-H⋯N hydrogen bond. In the crystal structure, centrosymmetrically related mol-ecules are connected by pairs of N-H⋯O hydrogen bonds into dimers, wh...

2009
Yan-Xian Jin Zhen-Zhong Yan Jian-Guo Yang Ai-Guo Zhong Fu-You Pan

In the structure of the title compound, C(12)H(11)N(3)O(3)·H(2)O, the dihedral angle formed by the benzene and isoxazole rings is 2.03 (8)°. The mol-ecular conformation is stabilized by an intra-molecular O-H⋯N hydrogen bond. In the crystal structure, mol-ecules are linked into a three-dimesional network by inter-molecular N-H⋯O, O-H⋯N and O-H⋯O hydrogen bonds, and by π-π stacking inter-actions...

Journal: :Molecules 2015
Cristina Nastasă Brîndușa Tiperciuc Mihaela Duma Daniela Benedec Ovidiu Oniga

New series of hydrazones 5-18 were synthesized, in good yields, by reacting 4-methyl-2-(4-(trifluoromethyl)phenyl)thiazole-5-carbohydrazide with differently substituted benzaldehyde. The resulting compounds were characterized via elemental analysis, physico-chemical and spectral data. An antimicrobial screening was done, using Gram (+), Gram (-) bacteria and one fungal strain. Tested molecules ...

2013
Mehmet Akkurt Muhammet Zopun Gültaze Çapan Orhan Büyükgüngör

In the title compound, C16H18ClN3O, the cyclo-hexane ring adopts a distorted chair conformation. In the crystal, pairs of mol-ecules are linked by N-H⋯O hydrogen bonds into inversion dimers, forming R 2 (2)(10) ring motifs. These dimers are connected through C-H⋯N hydrogen bonds into chains along the a axis, forming layers parallel to (101).

2007
Yongqi Qin Fangfang Jian Hailian Xiao Jing Zhang

In the mol-ecule of the title compound, C(18)H(16)N(4)O, the intra-molecular N-H⋯N hydrogen bond results in the formation of a planar five-membered ring, which is also co-planar with the adjacent five-membered ring, being oriented at a dihedral angle of 1.23 (3)°. The dihedral angles formed by the planar pyrazole ring with the adjacent phenyl ring and the other phenyl ring are 7.29 and 11.21°, ...

2012
Rahman Bikas Parisa Mahboubi Anarjan Seik Weng Ng Edward R. T. Tiekink

The organic mol-ecule of the title monohydrate, C(12)H(9)IN(2)O(3)·H(2)O, features a disordered furyl ring with the major component [site occupancy = 0.575 (18)] having the carbonyl O and furyl O atoms syn, and the other conformation having these atoms anti. The mol-ecule is slightly twisted with the dihedral angle between the benzene and furyl rings being 10.3 (6)° (major component). An intra-...

2013
Chandra N. Srikantamurthy Shamantha Kumar B. H. Doreswamy K. B. Umesha M. Mahendra

In the title compound, C24H20N4O2, the pyrazole ring makes dihedral angles of 47.57 (10)° and 30.56 (11)° with its N-bound and C-bound phenyl groups, respectively. The C-N-N-C group that links the two carbonyls has a torsion angle of 81.5 (2)°. The torsion angles between the carbonyl groups and their adjacent pyrazole and phenyl rings are 125.89 (19) and 164.22 (17)°, respectively. In the cryst...

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