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8 citations found for Teerawatananond, T.

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The title Schiff base compound, C14H12ClNO, was prepared from 4-chloro­benzyl­amine and salicyl­aldehyde. The mol­ecule is V-shaped: the dihedral angle between the aromatic rings is 67.51 (5)°. The rings are located on the opposite side of the C=N bond, giving an E configuration. An intra­molecular N-H...O hydrogen bond generates a S(6) ring. In the crystal structure, only weak non-classical C-H...O contacts are observed.

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In the title compound, C7H10N2·C7H6O2, the components are linked by an O-H...N hydrogen bond. The mean planes of two mol­ecules form a dihedral angle of 78.68 (5)°. The crystal packing exhibits weak non-classical C-H...O contacts.

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In the title compound, C22H21ClO8, the rotenoid core is nearly planar (r.m.s. deviation 0.114 Å), with the largest deviations from the least-squares plane being 0.286 (3) and 0.274 (2) Å. An inter­molecular O-H...O hydrogen bond links two mol­ecules into a centrosymmetric dimer having an R22(18) ring motif.

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The title compound (also known as phragmalin triacetate), C35H42O14, is a phragmalin-type limonoid extracted from X. rumphii. The mol­ecule consists of eight rings with the orthoacetate group bridged at positions 1, 8 and 9. The two five-carbocyclic rings (A1 and A2) and the dioxolane ring (G) adopt a distorted envelope conformation. The 1,3-dioxane ring (E) exists in a chair conformation. The six-carbocyclic rings (B and C) exhibit a twisted-boat conformation. The lactone ring has a half-chair conformation and the furan ring is planar (r.m.s. deviation = 0.002 Å). Rings A1/B, A2/B, B/C, C/D and C/G are all cis-fused. The two acet­oxy groups attached to ring B and the furan ring attached to the lactone ring are in equatorial positions. The porous crystal packing exhibits voids of 688 Å3 and weak inter­molecular C-H...O inter­actions. The absolute configuration was assigned on the basis of literature data.

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The title compound, C8H10O4, was isolated from culture extracts of the endophytic fungus Xylaria sp. (PB-30). The cyclo­hexenone ring exhibits a flattened boat conformation. In the crystal structure, mol­ecules related by translation along the b axis are linked into chains through O-H...O hydrogen bonds. Weak non-classical C-H...O contacts are also observed in the structure.



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The title mol­ecule, C28H20O8S2, has a T-shaped conformation. The central 9,10-anthraquinone moiety is bow-shaped with the two outer aromatic rings being inclined to one another by 13.99 (11)°. The benzenesulfonate rings are inclined to one another by 47.35 (12)°, and by 34.51 (11) and 17.88 (11)° to the bridging aromatic ring of the 9,10-anthraquinone moiety. In the crystal, C-H...O interactions link the mol­ecules into ribbons in [100].

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