1. Journal Articles
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Item Redetermination of methyl 3,4-O-isopropyl-idene-?-D-fucopyran-oside monohydrate(2009) Fun, H.-K.; Jebas, S.R.; Rai, S.; Shetty, P.; Isloor, A.M.In the title compound, C10H18O5 H2O, the fucopyran-oside ring adopts a chair conformation. The crystal packing is stabilized by inter-molecular O - H?O and C - H?O hydrogen bonds together with intra-molecular O?O [2.2936 (8) ] and inter-molecular O?O [2.7140 (8)-2.829 (3) ] short contacts. The mol-ecules are linked together to form an infinite chain along the a axis. This structure has been solved previously but with no R-values [Spiers (1931). Z. Kristallogr. Kristallgeom. Kristallphys. Kristallchem. 78, 101].Item N-(1-Naphth-yl)-10H-9-oxa-1,3-diaza-anthracen-4-amine(2009) Fun, H.-K.; Chantrapromma, S.; Rai, S.; Shetty, P.; Isloor, A.M.In the mol-ecule of the title compound, C21H15N 3O, the 10H-9-oxa-1,3-diaza-anthracene ring system is slightly bent, with dihedral angles of 3.99 (6) and 4.80 (6) between the pyran ring and the pyrimidine and benzene rings, respectively. This ring system makes a dihedral angle of 85.23 (3) with the naphthalene plane. In the crystal packing, mol-ecules are linked by N - H?N hydrogen bonds into chains along the a axis and these chains are stacked along the b axis. The crystal is further stabilized by weak C - H?N and C - H?? inter-actions.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 Ethyl 2-[(3-chloro-phen-yl)hydrazono]-3-oxobutanoate(2009) Fun, H.-K.; Padaki, M.; Sowmya; Isloor, A.M.; Chantrapromma, S.The mol-ecule of the title oxobutanoate derivative, C12H 13ClN2O3, adopts a keto-hydrazo tautomeric form and is roughly planar, the angle between the benzene ring and the mean plane through the hydrazone and aliphatic chain being 1.49 (6) . This planarity is further aided by the formation of an intra-molecular N - H?O hydrogen bond which generates an S(6) ring motif. The aromatic ring and aliphatic chain have a trans configuration with respect to the N - N bond. In the crystal packing, centrosymmetric R 2 2(16) dimers are formed through pairs of weak C - H?O(3-oxo) inter-actions. These dimers are linked together through weak C - H?O(carboxyl-ate C=O) inter-actions into ribbons along the b-axis direction. These ribbons are stacked along the a-axis direction. The crystal also exhibits Cl?Cl [3.4988 (6) ] and C?O [3.167 (2)-3.335 (2) ] short contacts.Item Ethyl 2-[(2,6-dimethylphenyl)-hydrazono]-3-oxobutanoate(2009) Fun, H.-K.; Jebas, S.R.; Padaki, M.; Hegde, C.; Isloor, A.M.The title compound, C14H18N2O3, crystallizes with two independent molecules in the asymmetric unit, having closely comparable geometries. Both molecules are essentially planar [maximum deviations from the mean plane of 0.069 (1) and 0.068 (1) for the two molecules] and contain an intramolecular N?H?O hydrogen bond which generates a ring with graph-set motif S(6). In the crystal, the molecules are linked into chains along the c axis by intermolecular C?H?O hydrogen bonds, and intermolecular C?H?? interactions are also present.Item Ethyl 2-[(4-chloro-phen-yl)hydrazono]-3-oxobutanoate(2009) Fun, H.-K.; Chantrapromma, S.; Padaki, M.; Radhika; Isloor, A.M.The mol-ecule of the title oxobutanoate derivative, C12H 13ClN2O3, is nearly planar; the inter-planar angle between the benzene ring and the mean plane through the hydrazono-3-oxobutanoate unit is 2.69 (3) . An intra-molecular N - H?O hydrogen bond generates an S(6) ring motif. In the crystal packing, C - H?O(3-oxo) inter-actions link mol-ecules into dimers. The dimers thus formed are linked through C - H?O(carboxyl-ate C=O) inter-actions, leading to the formation of ribbons along the [01 ] direction, which are stabilized via Cl?Cl [3.2916 (3) ] contacts. The ribbons are stacked via C?O contacts [3.2367 (12)-3.3948 (12) ].Item Catena-Poly[[(ethanol-O)[3-(1-phenyl-1H-pyrazol-3-yl)benzoic acid-O]lithium] - 3-(1-phenyl-1H-pyrazol-3-yl)benzoato-2 O:O?](2009) Fun, H.-K.; Balasubramani, K.; Rai, S.; Shetty, P.; Isloor, A.M.The asymmetric unit of the title polymeric compound, [Li2(C 16H11N2O2)2(C 16H12N2O2)2(CH 3CH2OH)2] n , contains two Li I ions, two 3-(1-phenyl-1H-pyrazol-3-yl)benzoate ions, two 3-(1-phenyl-1H-pyrazol-3-yl)benzoic acid molecules and two ethanol molecules. In the crystal structure, each of the two LiI ions has a distorted tetra-hedral geometry, coordinated by two carboxyl-ate O atoms, one carboxyl O atom and one ethanol O atom. The carboxyl-ate group bridges the LiI ions, forming a one-dimensional polymeric chain along [100]. The crystal structure is further stabilized by O - H?O and C - H?N hydrogen bonding, and ?-? inter-actions with centroid-centroid distances in the range 3.6534 (13)-3.8374 (13) . 2009 Fun et al.Item 4-(4-Fluoro-phen-oxy)benzoic acid(2009) Fun, H.-K.; Goh, J.H.; Rai, S.; Shetty, P.; Isloor, A.M.In the title compound, C13H9FO3, the dihedral angle between the two benzene rings is 70.99 (5) . In the crystal structure, molecules are linked into dimers by centrosymmetric O - H?O inter-actions, generating R 2 2(8) ring motifs. These dimers are linked into a two-dimensional array, parallel to the ab plane, by two different C - H?O inter-actions. A weak C - H?? inter-actions is also present. 2009 Fun et al.Item (4-Chloro-2-fluoro-phen-yl)[1-(2,6-difluoro-phen-yl)but-3-en-yl]amine(2009) Fun, H.-K.; Rai, S.; Shetty, P.; Isloor, A.M.; Chantrapromma, S.In the mol-ecule of the title homoallylic amine, C16H 13ClF3N, the dihedral angle between the two benzene rings is 84.63 (4) . Weak intra-molecular N - H?F hydrogen bonds generate S(6) and S(5) ring motifs. In the crystal structure, weak inter-molecuar N - H?F hydrogen bonds link mol-ecules into centrosymmetric dimers which are arranged in mol-ecular sheets parallel to the ac plane.Item 2-[(4-tert-Butyl-anilino)(phen-yl)meth-yl]cyclo-hexa-none(2009) Fun, H.-K.; Chantrapromma, S.; Rai, S.; Shetty, P.; Isloor, A.M.In the mol-ecule of the title compound, C23H29NO, the cyclo-hexa-none ring has been distorted from the standard chair conformation by the ketone group such that part of the ring is almost flat. The remaining [(4-tert-butyl-anilino)(phen-yl)meth-yl] portion of the mol-ecule is in an equatorial position on the cyclo-hexa-none ring. The dihedral angle between the two benzene rings is 81.52 (8) . In the crystal packing, mol-ecules are linked by N - H?O hydrogen bonds into infinite one-dimensional chains along the a axis and these chains are stacked down the c axis. The crystal structure is further stabilized by weak C - H?O and C - H?? inter-actions.
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