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  1. 1401
    “…The title compound, C(19)H(15)NO(5), has an intra­molecular C—H⋯O=C hydrogen bond between a naphthalene H atom and the O atom of the carbonyl group. …”
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    (2,7-Dimeth­oxy­naphthalen-1-yl)(3-nitro­phen­yl)methanone
  2. 1402
    por Smith, Graham, Wermuth, Urs D.
    Publicado 2010
    “…The asymmetric unit of the title compound, C(6)H(13)N(2)O(+)·C(8)H(7)O(2) (−)·0.5H(2)O, comprises two isonipecotamide cations, two phenyl­acetate anions and a water mol­ecule of solvation. …”
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    4-Carbamoylpiperidinium phenyl­acetate hemihydrate
  3. 1403
    “…The hy­droxy and meth­oxy groups lie in the plane of the benzene ring to which they are bound [O—C—C—C = 179.96 (11)° and C—O—C—C = −177.96 (12)°]. …”
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    2-(2-Hy­droxy-3-meth­oxy­phen­yl)-6H-perimidin-6-one
  4. 1404
    “…Two independent mol­ecules comprise the asymmetric unit of the title compound, C(20)H(16)ClNO, which differ in the orientation of the chalcone residue with respect to the quinoline ring [the C—C—C(=O)—C torsion angles are 69.5 (2) and 86.0 (2)°]. …”
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    (2E)-3-(4-Chloro­phen­yl)-1-(2,4-dimethyl­quinolin-3-yl)prop-2-en-1-one
  5. 1405
    “…The two meth­oxy groups at the meta positions are essentially coplanar with the attached benzene rings [C—O—C—C torsion angles = −0.97 (14) and 179.47 (9)°], whereas the meth­oxy group at the para position is twisted from the attached ring with a C—O—C—C torsion angle of −104.48 (11)°. …”
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    (E)-1-(Pyridin-2-yl)-3-(3,4,5-trimeth­oxy­phen­yl)prop-2-en-1-one
  6. 1406
    “…An extensive array of inter­molecular O—H⋯O, O—H⋯N and N—H⋯O hydrogen bonds and weak inter­molecular N—H⋯O, C—H⋯O and C—H⋯π inter­actions dominate the crystal packing.…”
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    Opipramolium fumarate
  7. 1407
    “…Inter­molecular weak C—H⋯O hydrogen bonding, and C=O⋯C=O [O⋯C = 3.058 (3) Å] and C=O⋯π [O⋯centroid = 3.328 (2) Å] inter­actions occur in the crystal structure.…”
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    8-Acetyl-4-methyl-2-oxo-2H-chromen-7-yl acetate
  8. 1408
    “…In the title mol­ecule, C(22)H(24)OSi, the Si—O—C angle is 139.79 (11)°, the O—C—C angles of the triphenyl­meth­oxy group are in the range 106.13 (13)–109.22 (14)° and the O—Si—C angles of the trimethyl­sil­yloxy group are in the range 103.08 (10)–113.53 (10)°. …”
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    Trimeth­yl(triphenyl­meth­oxy)silane
  9. 1409
    “…The meth­oxy groups at the ortho and para positions are slightly twisted from the benzene ring to which they are bound [C—O—C—C = 21.9 (3) and −171.93 (18)°, respectively], whereas the meth­oxy group at the meta position is almost coplanar [C—O—C—C = 3.5 (3)°]. …”
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    2-(2,4,5-Trimeth­oxy­phen­yl)-2,3-dihydro­quinolin-4(1H)-one
  10. 1410
    “…The meth­oxy group of the 4-meth­oxy­phenyl fragment deviates slightly [C(methyl)—O—C—C = 10.0 (4)°] with respect to the benzene ring, whereas the eth­oxy group of the 3-eth­oxy-4-hy­droxy­phenyl fragment is is almost coplanar [C—O—C—C(methyl) = 178.5 (2)°]. …”
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    (E)-N′-(3-Eth­oxy-4-hy­droxy­benzyl­idene)-4-meth­oxy­benzohydrazide
  11. 1411
    “…One meth­oxy group, surrounded on either side by the other meth­oxy groups, is almost normal to the benzene ring to which it is connected [C—O—C(ar)—C(ar) torsion angle = 81.64 (15)°]. In the crystal, N—H⋯O, C—H⋯O and π–π inter­actions [between quinoline residues; centroid–centroid distance = 3.4375 (8) Å] link mol­ecules into a three-dimensional architecture.…”
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    7-Chloro-4-[(E)-2-(3,4,5-trimeth­oxy­benzyl­idene)hydrazin-1-yl]quinoline
  12. 1412
    “…The 2-tolyl ring is approximately orthogonal to this plane [dihedral angle = 83.03 (7)°] as is the acetonitrile group [C—O—C—C torsion angle = 79.24 (14)°] which is also syn to the methyl substituent of the tolyl group. …”
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    2-{[2-Methyl-3-(2-methyl­phen­yl)-4-oxo-3,4-dihydro­quinazolin-8-yl]­oxy}acetonitrile
  13. 1413
    “…By introducing the molecular orbital concept, the dominant fluorescence was found to originate from the electronic transitions among/between the non-oxidized carbon regions and the boundary of oxidized carbon atom regions, where all three kinds of functionalized groups C-O, C = O and O = C-OH were participating. In the visible spectral range, the ultrafast fluorescence of graphene oxide was observed for the first time.…”
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    The Origin of Fluorescence from Graphene Oxide
  14. 1414
    por Courtney, Robert, Seymour, Jamie
    Publicado 2013
    “…Maximum fecundity occurred in thermal treatments of 21 to 25ºC and the theoretical minimum thermal requirement for population stability was approximately 17ºC. …”
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    Seasonality in Polyps of a Tropical Cubozoan: A latina nr mordens
  15. 1415
    “…The meth­oxy substituents of the central benzene ring are either almost coplanar [C—C—O—C = 3.54 (15) and 177.70 (9)°] or perpendicular [C—C—O—C = 80.08 12)° for the central substituent]. …”
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    Ethyl (2Z)-3-oxo-2-(3,4,5-tri­meth­oxy­benzyl­idene)butano­ate
  16. 1416
    “…The 4-meth­oxy substituent is almost co-planar with the benzene ring [C—C—O—C torsion angle = 5.4 (1)°], while the meth­oxy groups at positions 2 and 3 [C—C—O—C torsion angles of 122.6 (4) and −66.1 (4)°, respectively] are twisted away from the mean plane of the benzene ring in anti­clinical and synclinical conformations, respectively. …”
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    (4-Methyl­piperazin-1-yl)(2,3,4-tri­meth­oxy­benzyl­idene)amine
  17. 1417
    “…The intramolecular cyclization at 80 ºC proceeded with minimal racemization of the stereogenic center at C-12 on neoechinulin A, even though the cyclization at 110 ºC caused partial racemization. …”
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    Synthesis and Neuroprotective Action of Optically Pure Neoechinulin A and Its Analogs
  18. 1418
    “…The carboxyl­ate group assumes an extended conformation with respect to the pyrimidine ring, which can be seen from the O=C—O—C torsion angle of 3.2 (4) °. In the crystal, mol­ecules are linked via C—H⋯O and C—H⋯N hydrogen bonds, forming slabs lying parallel to (100).…”
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    Crystal structure of ethyl 4-(2,4-di­chloro­phen­yl)-2-methyl-4H-benzo[4,5]thia­zolo[3,2-a]pyrimidine-3-carboxyl­ate
  19. 1419
    “…In the title β-thio­carbonyl compound, C(16)H(16)O(3)S, the adjacent meth­oxy and carbonyl O atoms are synperiplanar [the O—C—C—O torsion angle is 19.8 (4)°] and are separated by 2.582 (3) Å. …”
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    Crystal structure of 2-meth­oxy-2-[(4-meth­oxy­phen­yl)sulfan­yl]-1-phenyl­ethanone
  20. 1420
    por Pinal Mora, Karla Magdalena
    Publicado 2006
    Libro
    Apuntes de metodología y redacción : guía para la elaboración de un proyecto de tesis
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