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1301por Rathwell, Dominea C. K., Tsang, Kit Y., Choi, Ka Wai, Boyd, Peter D. W., Brimble, Margaret A.“…In the crystal structure of the title compound, C(16)H(16)O(6), a pair of naphthoquinone rings are linked via O—H⋯O—C hydrogen bonds in a nearly orthogonal arrangement. …”
Publicado 2008
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1302“…In the crystal structure of the title compound, C(14)H(14)F(3)O(7)P, the central chain, which connects the phosphate bicyclic system and the benzene ring, is made up of an approximately planar C—C(O)—O—C(H(2)) fragment and a C(H(2))—O—C(Ph) link; the mean planes make a dihedral angle of 75.9 (2)°. …”
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1303“…The molecules are linked into a three-dimensional network via intermolecular N—H⋯O, C—H⋯O, C—H⋯N and C—H⋯Br hydrogen bonds. An intramolecular N—H⋯O hydrogen bond is also present.…”
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1304“…In the title compound, C(11)H(9)Cl(2)N(3)O(3), the triazole and benzene rings are roughly parallel to one another [dihedral angle = 4.99 (2)°] because the C—O—C—C—O chain that links the two rings is folded [O—C—C—O = 8.60 (2)°] rather than fully extended. …”
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1305“…In the title compound, C(16)H(12)Cl(2)O(3), the benzene rings form a dihedral angle of 2.0 (3)°. Within the central O=C—CH(2)C(H)OH—C=O unit, the carbonyl groups are coplanar and lie to opposite sides [O—C⋯C—O = −170.1 (6)°]. …”
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1306por Nagasawa, Atsushi, Mitsui, Ryosuke, Kato, Yuichi, Okamoto, Akiko, Yonezawa, Noriyuki“…In the molecule of the title compound, C(18)H(14)O(3), there is an intramolecular O—H⋯O=C hydrogen bond between the carbonyl and hydroxy groups on the naphthalene ring system. …”
Publicado 2010
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1307por Chandraprakash, K., Ramesh, P., Ravichandran, K., Mohan, P. S., Ponnuswamy, M. N.“…In the title compound, C(11)H(9)NO(2), the quinoline ring system is essentially planar (r.m.s. deviation = 0.005 Å) and the methoxy and aldehyde groups are almost coplanar with it [N—C—O—C = 6.24 (19) and O—C—C—C = 0.3 (2)°]. In the crystal, molecules are linked by pairs of C—H⋯O hydrogen bonds, forming centrosymmetric R (2) (2)(10) dimers. …”
Publicado 2010
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1308por Rajesh, K., Vijayakumar, V., Narasimhamurthy, T., Suresh, J., Tiekink, Edward R. T.“…In the crystal, hydrogen-bonding interactions of the type N(a)—H⋯O(c) and O(h)—H⋯O(c) (a = amine, c = carbonyl and h = hydroxy) link the molecules into a three-dimensional network.…”
Publicado 2010
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1309por Hassan, Noor Doha, Abdullah, Zanariah, Tajuddin, Hairul Anuar, Fairuz, Zainal A., Ng, Seik Weng, Tiekink, Edward R. T.“…The molecule is twisted about the ether–benzene O—C bond, with a C—O—C—C torsion angle of −102.8 (2)°. …”
Publicado 2010
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1310“…The N—H and O=C groups are linked by an intramolecular hydrogen bond. …”
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1311por Vennila, Jasmine P., Thiruvadigal, D. John, Kavitha, Helen P., Chakkaravarthi, G., Manivannan, V.“…The crystal structure exhibits O—H⋯O, C—H⋯O, C—H⋯Br and C—H⋯ π interactions.…”
Publicado 2011
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1312por Muto, Toyokazu, Hijikata, Daichi, Okamoto, Akiko, Oike, Hideaki, Yonezawa, Noriyuki“…In the title compound, C(25)H(16)N(2)O(8), the dihedral angle between the naphthalene ring system and the benzene ring of the nitrophenyl ketone unit is 82.64 (7)°. The bridging ester O—C(=O)—C plane makes dihedral angles of 42.12 (8) and 11.47 (9)°, respectively, with the naphthalene ring system and the benzene ring of the nitrophenyl ester unit. …”
Publicado 2011
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1313“…The polymorphs feature the same strong intramolecular N—H⋯O=C hydrogen bonds, but show different packing modes. …”
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1314“…The dioxolene ring adopts an envelope conformation on the O—C—O C atom. In the crystal, molecules are linked via C—H⋯O interactions, resulting in R (2) (2)(6) and R (2) (2)(12) graph-set motifs.…”
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1315por Fun, Hoong-Kun, Quah, Ching Kheng, Nayak, Prakash S., Narayana, B., Sarojini, B. K.“…In the crystal, molecules are linked via intermolecular N—H⋯O, C—H⋯O, C—H⋯Cl and C—H⋯F hydrogen bonds into layers parallel to (001). …”
Publicado 2012
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1316“…The device uses Peltier-based thermoelectric modules (TECs) for heating and cooling, and is capable of precision control of temperatures from −5ºC to 60ºC. Our approach can be easily adapted for use in a variety of physiological and behavioral assays that require precise temperature control over a wide range of temperatures.…”
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1317por Hamadi, Fatima, Latrache, Hassan, Zahir, Hafida, Elghmari, Abderrahmene, Timinouni, Mohamed, Ellouali, Mostapha“…The electrophoretic mobility at pH 7 appeared to be governed on the cell surface by the (O=C) functional groups. The cell surface’s hydrophilicity was associated with high levels of (C-(O.N)) and (OH- (C-O-C)) functional groups, whereas the cell surface’s hydrophobicity was associated with (C-(C,H)) functional groups.…”
Publicado 2008
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1318“…The thermal decomposition of imidoyl azides (ArO-C=N-Z)-N(3), (Ar = p-NO(2)-C(6)H(4)-, p-Br-C(6)H(4)-, p-Cl-C(6)H(4)-, p-C(6)H(5)-, p-CH(3)-C(6)H(4)-, 2,4-dimethyl-C(6)H(3)-, 2,4,6-trimethyl-C(6)H(2)-, p-CH(3)O-C(6)H(4)- and Z = p-CH(3)-C(6)H(4)-SO(2)-, 2,4,6-trimethyl-C(6)H(2)-SO(2)-, CN) in the solid phase and in anisole has been studied in detail. …”
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1319Oxidized Carbon Black as an Activator of Transesterification Reactions under Solvent-Free Conditionspor Acocella, Maria Rosaria, Maggio, Mario, Ambrosio, Chiara, Aprea, Noemi, Guerra, Gaetano“…The procedure, based on 5/1 w/w H(2)O(2)/H(2)SO(4), when applied to high-surface-area CB, leads to oxidation contents (O/C = 0.66) comparable to those obtained for graphite with the more aggressive and metal-based Hummers method (O/C 0.63). …”
Publicado 2017
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1320“…Hemanthamine [466-75-1] C17H19NO4 (301.35). mp 203~203.5ºC, [a]D 25 = +19.7º (c = 3.8, methanol), [a]D 25 = +33 (c = 1.25, CHCl3). …”
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