Zobrazeno 1 - 10
of 337
pro vyhledávání: '"H S Yathirajan"'
Autor:
U. Likhitha, B. Narayana, B. K. Sarojini, S. Madan Kumar, Naha Anup, P. J. Srijana, H. S. Yathirajan
Publikováno v:
Journal of Chemical Crystallography. 52:276-286
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d24f9e56ec8263ebdb260dc857d16f55
https://doi.org/10.1007/s10870-021-00913-1
https://doi.org/10.1007/s10870-021-00913-1
Publikováno v:
Acta Crystallographica Section E: Crystallographic Communications, Vol 71, Iss 2, Pp 176-179 (2015)
In the cyclohexene ring of the title compound, C23H20BrNO3S, the –(CH2)4– atoms are positionally disordered [occupancy ratio = 0.753 (6):0.247 (6)]. The ring has a half-chair conformation for both the major and minor components. The dihedral angl
Externí odkaz:
https://doaj.org/article/712ac8d7b8c949d2a3d303ed7123f75f
Publikováno v:
Acta Crystallographica Section E, Vol 70, Iss 10, Pp 203-206 (2014)
The title salts, C8H13N4+·Cl−, (I), and C8H13N4+·NO3−, (II), contain linked pyridinium–piperazine heterocycles. In both salts, the piperazine ring adopts a chair conformation with protonation at the N atom not linked to the other ring. In the
Externí odkaz:
https://doaj.org/article/577f438322a04fb7b63be460a9f103a2
Autor:
S. Shashidhar Bharadwaj, Karthik Kumara, Boja Poojary, H. S. Yathirajan, K. Byrappa, N. K. Lokanath, S. Madan Kumar
Publikováno v:
IUCrData, Vol 1, Iss 5, p x160739 (2016)
The title compound, C18H13F2NO2, is a polymorph of the structure reported by Sunitha et al. [Acta Cryst. (2015), E71, o341–o342]. Both compounds crystallize in the triclinic space group P\overline{1}. The principal difference between the two polymo
Externí odkaz:
https://doaj.org/article/76522450061e42259e6e0a8bbfed8bd7
Publikováno v:
Acta Crystallographica Section E, Vol 70, Iss 11, Pp o1210-o1211 (2014)
The title salt {systematic name: bis[1-(3-chlorophenyl)piperazinium 2,4,6-trinitrophenolate]–picric acid (2/1)}, 2C10H14ClN2+·2C6H5N3O7−·C6H6N3O7, crystallized with two independent 1-(3-chlorophenyl)piperazinium cations, two picrate anions and
Externí odkaz:
https://doaj.org/article/628c8ca9ffd24997a0e24da7c63cec54
Publikováno v:
Acta Crystallographica Section E, Vol 70, Iss 9, Pp o951-o952 (2014)
In the title compound, C22H19NO2S, the cyclohexene ring adopts a half-chair conformation. The dihedral angles between the plane of the thiophene ring and those of its amide- and carbonyl-bonded benzene rings are 7.1 (1) and 59.0 (2)°, respectively.
Externí odkaz:
https://doaj.org/article/4cf7ca2924bb4719ade39cea5f905b37
Two tautomers in the same crystal: 3-(4-fluorophenyl)-1H-pyrazole and 5-(4-fluorophenyl)-1H-pyrazole
Publikováno v:
Acta Crystallographica Section E, Vol 70, Iss 9, Pp o949-o950 (2014)
The title co-crystal, 3-(4-fluorophenyl)-1H-pyrazole–5-(4-fluorophenyl)-1H-pyrazole (1/1), C9H7FN2, crystallizes with four independent molecules (A, B, C and D) in the asymmetric unit exhibiting two tautomeric forms (A and D; B and C) due to N—H
Externí odkaz:
https://doaj.org/article/99b6d7cd36a54877a58cc149f1d4ad0f
Publikováno v:
Acta Crystallographica Section E, Vol 70, Iss 6, Pp o681-o682 (2014)
In the cation of the title salt {systematic name: 4-[bis(4-fluorophenyl)methyl]-1-[(2E)-3-phenylprop-2-en-1-yl]piperazin-1-ium pyridine-4-carboxylate}, C26H27F2N2+·C6H4NO2−, the piperazine ring is in a slightly distorted chair conformation. The di
Externí odkaz:
https://doaj.org/article/7575e679164b48508cb534109f5ac77f
Publikováno v:
Acta Crystallographica Section E, Vol 70, Iss 6, Pp o636-o637 (2014)
In the title compound, C19H18N4O4, the nitrophenyl and phenyl rings are twisted by 67.0 (6) and 37.4 (4)°, respectively, with respect to the pyrazole ring plane [maximum deviation = 0.0042 (16) Å]. The dihedral angle between the mean planes of the
Externí odkaz:
https://doaj.org/article/d5e68a0431f841b0872c03e09123411b
Publikováno v:
Acta Crystallographica Section E, Vol 70, Iss 6, Pp o738-o739 (2014)
In the title compound, C22H18N2O3S, disorder is found in the benzoyl group (A and B), as well as for four C atoms of the cyclohexene ring. Two orientations were modeled in a 0.583 (5):0.417 (5) ratio. The cyclohexene ring is in a distorted chair conf
Externí odkaz:
https://doaj.org/article/b79c2e03e62a45a28dfc063f0c72cd3d