Zobrazeno 1 - 10
of 135
pro vyhledávání: '"R. V. Krishnakumar"'
Publikováno v:
Acta Crystallographica Section E: Crystallographic Communications, Vol 74, Iss 9, Pp 1267-1271 (2018)
Accurate studies on the effect of substituents on the crystal packing are essential for understanding the intermolecular interactions and thus paving the way to crystal structure prediction. The crystal structures of diethyl 1-(4-chlorobenzyl)-4-(4-c
Externí odkaz:
https://doaj.org/article/6adfc087cc314184b31f876a10048ed5
Publikováno v:
Acta Crystallographica Section E: Crystallographic Communications, Vol 72, Iss 11, Pp 1637-1641 (2016)
The two title compounds, C28H26N2O2, (I), and C27H22BrClN2O2, (II), differ in their substituents, viz.4-methylphenyl and benzoyl rings in (I) replaced by 2-chlorophenyl and 4- bromobenzoyl, respectively, in (II). A significant difference between the
Externí odkaz:
https://doaj.org/article/85e912e76c0542bb8cb0eb9b9aaf2480
Autor:
C. Muthuselvi, M. Muthu, S. Athimoolam, B. Ravikumar, S. Pandiarajan, N. Srinivasan, R. V. Krishnakumar
Publikováno v:
IUCrData, Vol 4, Iss 1, p x190010 (2019)
The title compound, C31H26N4O2S, crystallizes in a triclinic centrosymmetric lattice with two molecules in the unit cell. The five-membered thiazole and pyrrolidine rings adopt twisted and envelope conformations, respectively. The methoxyphenyl and i
Externí odkaz:
https://doaj.org/article/4c5843edc0c9426eb926834c4756f8ba
Autor:
C. Muthuselvi, S. Athimoolam, N. Srinivasan, B. Ravikumar, S. Pandiarajan, R. V. Krishnakumar
Publikováno v:
IUCrData, Vol 3, Iss 9, p x181286 (2018)
In the title compound, C22H22ClN4O2S, the angle between the mean planes of the indene ring and the quinoxaline ring system is 3.93 (11)°. The five-membered indene and thiazole rings both adopt envelope conformations while the pyrrole ring adopts a t
Externí odkaz:
https://doaj.org/article/eddc5a7032634cfdab0d41d0009f12ab
Publikováno v:
IUCrData, Vol 3, Iss 2, p x180238 (2018)
The title compound, C26H19BrN4O2S, crystallizes in a monoclinic C-centred lattice with eight molecules in the unit cell. The five-membered thiazole and pyrrolidine rings adopt envelope conformations and the bromophenyl and indenoquinoxaline planes ar
Externí odkaz:
https://doaj.org/article/85969ea7f34449c0922df46a869f2460
Publikováno v:
IUCrData, Vol 2, Iss 9, p x171305 (2017)
In the title compound, C26H20N4O2S, the thiazole and pyrrolidine rings adopt envelope conformations with the respective flap atoms being the N atom and the nitro-bearing C atom. The phenyl and indenoquinoxaline planes are oriented at an angle of 66.7
Externí odkaz:
https://doaj.org/article/6f0bfd56cac2431fb903089a23da668b
Publikováno v:
IUCrData, Vol 1, Iss 4, p x160644 (2016)
In the title compound, C27H24ClNO, the indole ring is almost orthogonal to the chlorophenyl ring and the mean plane of the cyclohexanone ring, making a dihedral angles of 82.11 (6) and 89.96 (4)°, respectively. In the crystal, a strong N—H...O hyd
Externí odkaz:
https://doaj.org/article/db13f735012a4c72a22319d22e77820b
Publikováno v:
Acta Crystallographica Section E: Crystallographic Communications, Vol 71, Iss 10, Pp o715-o716 (2015)
In the title compound, C16H16O4, the five-membered ring of the indene-1,3-dione unit adopts a twist conformation, whereas the seven-membered ring adopts a twist–chair conformation. In the crystal, molecules are linked by O—H...O hydrogen bonds, w
Externí odkaz:
https://doaj.org/article/c331be6c733c48e1a43a86217facefcb
Publikováno v:
Acta Crystallographica Section E: Crystallographic Communications, Vol 71, Iss 9, Pp o665-o666 (2015)
Redetermination of the crystal structure of N-(β-carboxyethyl)-α-isoleucine, C9H18N2O3, reported earlier by Nehls et al. [Acta Cryst. (2013), E69, o172–o173], was undertaken in which the ionization state assigned to the molecule as unionized has
Externí odkaz:
https://doaj.org/article/e201597a204b457bb146cbcfda7e850b
Publikováno v:
Acta Crystallographica Section E, Vol 70, Iss 9, Pp o974-o975 (2014)
The title compound, C26H18F3N3O2S, a 2-methoxy-substituted derivative, is closely related to its 4-methyl- and 4-chloro-substituted analogues and yet displays no structural relationships with them. The thiophene ring is disorder free and the –CF3 g
Externí odkaz:
https://doaj.org/article/9098685c8a6345f3b0950b6265a1fe90