Browsing by Author "Liew, W.-C."
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Item 4-Amino-3-(o-tolyl-oxymeth-yl)-1H-1,2,4-triazole-5(4H)-thione(2009) Fun, H.-K.; Liew, W.-C.; Vijesh, A.M.; Padaki, M.; Isloor, A.M.The asymmetric unit of the title compound, C10H 12N4OS, contains two independent mol-ecules, A and B, which differ significantly in the relative orientations of the benzene and triazole rings. The dihedral angle between the above two rings is 6.94 (5) in mol-ecule A and 77.60 (5) in mol-ecule B. In the crystal, mol-ecules are linked into a three-dimensional network by N - H?S, N - H?O, N - H?N and C - H?S hydrogen bonds and ?-? inter-actions between the benzene and triazole rings [centroid-centroid distance = 3.5311 (6) ] are also present. 2009 Fun et al.Item 4-Amino-3-(o-tolyl-oxymeth-yl)-1H-1,2,4-triazole-5(4H)-thione(2009) Fun, H.-K.; Liew, W.-C.; Vijesh, A.M.; Padaki, M.; Isloor, A.M.The asymmetric unit of the title compound, C10H 12N4OS, contains two independent mol-ecules, A and B, which differ significantly in the relative orientations of the benzene and triazole rings. The dihedral angle between the above two rings is 6.94 (5)° in mol-ecule A and 77.60 (5)° in mol-ecule B. In the crystal, mol-ecules are linked into a three-dimensional network by N - H?S, N - H?O, N - H?N and C - H?S hydrogen bonds and ?-? inter-actions between the benzene and triazole rings [centroid-centroid distance = 3.5311 (6) Å] are also present. © 2009 Fun et al.Item An ortho-rhom-bic polymorph of 6-de-oxy-6-iodo-1,2:3,4-di-O-isopropyl-idene - D-galactopyran-oside(2009) Fun, H.-K.; Liew, W.-C.; Rai, S.; Shetty, P.; Isloor, A.M.The title compound, C12H19IO5, is the ortho-rhom-bic polymorph of a previously reported monoclinic form [Krajewski et al. (1987). Bull. Pol. Acad. Sci. Chem. 35, 91-102]. The dihedral angles between the six-membered ring and the two five-membered rings are 67.66 (14) and 71.79 (13)°, whereas the dihedral angle between the five-membered rings is 74.41 (12)°, indicating that all three rings are twisted from each other. The six-membered ring has a twist-boat conformation while both of the five-membered rings have envelope conformations. The crystal structure is stabilized by a network of C - H?O contacts linking the mol-ecules into a two-dimensional array parallel to the ab plane. © 2009 Fun et al.Item N,N-Bis(2,6-difluorobenzyl)-1,3,4-thia-diazol-2-amine(2009) Fun, H.-K.; Liew, W.-C.; Chandrakantha, B.; Isloor, A.M.In the title compound, C16H11F4N 3S, the dihedral angles between the thia-diazole ring and the difluorobenzyl rings are 81.95 (7) and 81.96 (7) , whereas the dihedral angle between the difluorobenzyl rings is 11.41 (7) . In the crystal structure, C - H?N and C - H?F inter-actions link the molecules into two-dimensional arrays parallel to the bc plane. Fun et al. 2009.Item N,N-Bis(2,6-difluorobenzyl)-1,3,4-thia-diazol-2-amine(2009) Fun, H.-K.; Liew, W.-C.; Chandrakantha, B.; Isloor, A.M.In the title compound, C16H11F4N 3S, the dihedral angles between the thia-diazole ring and the difluorobenzyl rings are 81.95 (7) and 81.96 (7)°, whereas the dihedral angle between the difluorobenzyl rings is 11.41 (7)°. In the crystal structure, C - H?N and C - H?F inter-actions link the molecules into two-dimensional arrays parallel to the bc plane. © Fun et al. 2009.Item An ortho-rhom-bic polymorph of 6-de-oxy-6-iodo-1,2:3,4-di-O-isopropyl-idene - D-galactopyran-oside(2009) Fun, H.-K.; Liew, W.-C.; Rai, S.; Shetty, P.; Isloor, A.M.The title compound, C12H19IO5, is the ortho-rhom-bic polymorph of a previously reported monoclinic form [Krajewski et al. (1987). Bull. Pol. Acad. Sci. Chem. 35, 91-102]. The dihedral angles between the six-membered ring and the two five-membered rings are 67.66 (14) and 71.79 (13) , whereas the dihedral angle between the five-membered rings is 74.41 (12) , indicating that all three rings are twisted from each other. The six-membered ring has a twist-boat conformation while both of the five-membered rings have envelope conformations. The crystal structure is stabilized by a network of C - H?O contacts linking the mol-ecules into a two-dimensional array parallel to the ab plane. 2009 Fun et al.