Faculty Publications

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Publications by NITK Faculty

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Author: search.filters.author.Hosten, E.Subject: search.filters.subject.R factor = 0.040

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    1-[5-Acetyl-2,6-dimethyl-4-(5-phenyl-1H-pyrazol-3-yl)-1, 4-dihydropyridin-3-yl]ethanone monohydrate
    (2012) Islor, A.M.; Malladi, S.; Sundershan, S.; Gerber, T.; Hosten, E.; Betz, R.
    In the title compound, C20H21N3O 2·H2O, the aza-substitued six-membered ring adopts a L4 B conformation. In the crystal, classical N-H?O, N-H?N and O-H?O hydrogen bonds connect the entities into a three-dimensional network. Intramolecular C-H?O contacts are also observed.
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    Dimethyl 2,6-dimethyl-4-{3-[4-(methylsulfanyl)phenyl]-1H-pyrazol-4-yl}-1,4- dihydropyridine-3,5-dicarboxylate monohydrate
    (2012) Islor, A.M.; Vijesh, A.M.; Gerber, T.; Hosten, E.; Betz, R.
    In the title compound, C21H23N3O4S·H2O, the methylsulfanyl group is disordered over two sets of sites with site-occupancy factors of 0.631 (11) and 0.369 (11). The dihydropyridine ring adopts an E 4 conformation. In the crystal, classical O-H?N, O-H?O and N-H?O hydrogen bonds, as well as C-H?O and C-H?S contacts, connect the molecules into a three-dimensional network.
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    Ethyl 4-oxo-8-trifluoromethyl-1,4-dihydroquinoline-3-carboxylate
    (2012) Garudachari, B.; Islor, A.M.; Satyanarayan, M.N.; Gerber, T.; Hosten, E.; Betz, R.
    The asymmetric unit of the title compound, C13H10F3NO3, contains two independent molecules with similar conformations. In the crystal, N-H?O hydrogen bonds link alternating independent molecules into chains in [-110]. In the chain, the quinoline planes of the independent molecules are almost perpendicular to each other, forming a dihedral angle of 89.8 (1)°. ?-? interactions between the aromatic rings of quinoline bicycles related by inversion centres [for two independent centrosymmetric dimers, the shortest centroid-centroid distances are 3.495 (1) and 3.603 (1) Å] link the hydrogen-bonded chains into layers parallel to (110). Weak C-H?F and C-H?O interactions further consolidate the crystal packing.