Home Physical Sciences Crystal structure of methyl 4-(3-cyanophenyl)-2,7,7-trimethyl-5-oxo-1,4,5,6,7,8-hexahydro-quinoline-3-carboxylate, C21H22N2O3
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Crystal structure of methyl 4-(3-cyanophenyl)-2,7,7-trimethyl-5-oxo-1,4,5,6,7,8-hexahydro-quinoline-3-carboxylate, C21H22N2O3

  • Qing-Hua Meng EMAIL logo , Xu Long , Jing-Li Liu , Shuan Zhang and Guang-Hui Zhang
Published/Copyright: June 29, 2018
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Zeitschrift für Kristallographie - New Crystal Structures
From the journal Zeitschrift für Kristallographie - New Crystal Structures Volume 233 Issue 5

Abstract

C21H22N2O3, orthorhombic, Pbcn (no. 60), a = 15.093(2) Å, b = 13.896(2) Å, c = 17.501(2) Å, V = 3670.5(8) Å3, Z = 8, Rgt(F) = 0.0446, wRref(F2) = 0.1208, T = 293(2) K.

CCDC no.: 1848829

The crystal structure is shown in the figure. Tables 1 and 2 contain details on crystal structure and measurement conditions and a list of the atoms including atomic coordinates and displacement parameters.

Table 1:

Data collection and handling.

Crystal:Yellow block
Size:0.36 × 0.32 × 0.27 mm
Wavelength:Mo Kα radiation (0.71073 Å)
μ:0.09 mm−1
Diffractometer, scan mode:Bruker APEX-II CCD, φ and ω
θmax, completeness:25.0°, >99%
N(hkl)measured, N(hkl)unique, Rint:17564, 3233, 0.060
Criterion for Iobs, N(hkl)gt:Iobs > 2 σ(Iobs), 2199
N(param)refined:236
Programs:Olex2 [5], SHELX [6], Bruker [7]
Table 2:

Fractional atomic coordinates and isotropic or equivalent isotropic displacement parameters (Å2).

AtomxyzUiso*/Ueq
O10.51281(9)0.13879(10)0.17343(9)0.0584(4)
O20.58481(9)0.26593(12)0.12781(9)0.0709(5)
O30.19325(9)0.10459(9)0.13142(8)0.0541(4)
N10.33369(10)0.40305(11)0.11403(10)0.0492(4)
H10.3274350.4645060.1118850.059*
N20.25381(17)0.43032(17)0.44731(12)0.0878(7)
C10.59677(14)0.09112(17)0.18260(16)0.0717(7)
H1A0.5873260.0275370.2024470.108*
H1B0.6259820.0869560.1339890.108*
H1C0.6330160.1270620.2174940.108*
C20.51565(13)0.22887(15)0.14597(12)0.0469(5)
C30.42776(12)0.27212(13)0.14175(11)0.0412(5)
C40.41775(13)0.36524(13)0.12290(11)0.0451(5)
C50.48936(14)0.43779(15)0.10879(15)0.0649(7)
H5A0.4631150.4987320.0963180.097*
H5B0.5249950.4444470.1539210.097*
H5C0.5258390.4166830.0671030.097*
C60.26024(12)0.34614(12)0.10856(11)0.0394(5)
C70.26559(12)0.25222(12)0.12626(10)0.0382(4)
C80.34742(12)0.21186(12)0.16387(11)0.0405(5)
H80.3565760.1463920.1446070.049*
C90.19078(12)0.19009(12)0.11329(11)0.0405(5)
C100.11040(13)0.23249(14)0.07638(13)0.0510(5)
H10A0.0589530.1952080.0914600.061*
H10B0.1164380.2269840.0213730.061*
C110.09429(12)0.33774(13)0.09664(11)0.0445(5)
C120.07020(15)0.34682(17)0.18076(13)0.0651(6)
H12A0.0169570.3111680.1907480.098*
H12B0.1175470.3216550.2114610.098*
H12C0.0608860.4133510.1931540.098*
C130.01877(14)0.37804(17)0.04839(14)0.0645(6)
H13A−0.0346540.3430820.0591410.097*
H13B0.0102440.4448000.0604440.097*
H13C0.0331810.371619−0.0047970.097*
C140.17852(12)0.39360(13)0.07916(12)0.0478(5)
H14A0.1837420.4013590.0242580.057*
H14B0.1738800.4572610.1015400.057*
C150.33687(11)0.20645(12)0.25016(11)0.0418(5)
C160.31046(12)0.28630(13)0.29134(11)0.0443(5)
H160.2983840.3435670.2658800.053*
C170.30178(12)0.28213(14)0.36984(12)0.0476(5)
C180.27420(15)0.36518(17)0.41251(13)0.0598(6)
C190.32006(14)0.19792(16)0.40863(13)0.0600(6)
H190.3154350.1953670.4615760.072*
C200.34502(16)0.11848(17)0.36812(14)0.0683(7)
H200.3567060.0611410.3936040.082*
C210.35302(14)0.12261(14)0.28983(13)0.0571(6)
H210.3696790.0676390.2631380.069*

Source of material

A mixture of methyl 3-aminocrotonate (10 mmol), aromatic aldehyde (10 mmol) and 1,1-dimethyl-3,5-cyclohexanedione (10 mmol) in ethanol (100 mL) was refluxed for 2−3 h and then cooled to room temperature. After filtering the precipitates, they were sequentially washed with ice-cooled water and ethanol and then dried under a vacuum.

Experimental details

H atoms bonded to C and N atoms were positioned geometrically and refined using a riding model, with C—H = 0.96 Å and N—H = 0.86 Å with Uiso(H) = 1.2 times Ueq(C) and 1.2 times Ueq(N).

Comment

4-Arylpolyhydroquinolines belonging to the heterocyclic family, are natural and synthetic products that have been reviewed for their wide range of biological activities as antibacterial, anti-tumor, anti-inflammatory and antioxidant agents, etc. [1], [2], [3], [4].

In the title crystal structure (Figure), the dihedral angle of best planes of the six-membered ring containing one nitrogen atom and the adjacent six-membered carbon ring is 86.9°. The dihedral angle of phenyl ring and the six-membered ring containing one nitrogen atom is about 8°. The bond lengths of C—C and C—O are in the range of 1.350(3)−1.527(3) Å and 1.197(3)−1.430(3) Å, respectively. The bond lengths of C—N1 are 1.382(2) and 1.366(2) Å. All of above bond distances are in their normal ranges and they are comparable with previously reported compounds [8].

Funding source: Natural Science Foundation of Shaanxi Province

Award Identifier / Grant number: 2016SF-399

Funding statement: This research was supported by the Natural Science Foundation of Shaanxi Province (No. 2016SF-399), the Scientific Research Program Funded by Shaanxi Provincial Education Department (No.16JK1220) and the Youth Basic Research Project Funded by Shaanxi University of Chinese Medicine (No.2016QN37)

References

Kahsai, A. W.; Cui, J.; Kaniskan, H. Ü.; Garner, P. P.; Fenteany, G.: Analogs of tetrahydroisoquinoline natural products that inhibit cell migration and target galectin-3 outside of its carbohydrate-binding site. J. Biol. Chem. 283 (2008) 24534–24545.10.1074/jbc.M800006200Search in Google Scholar PubMed PubMed Central

Wang, Y.; Ba, Y.: Studies on the chemical constituents of Radix astragali and their inhibitory effect on HepG2 proliferation. Biomed. Res.-India 26 (2015) 393–398.Search in Google Scholar

Wang, X. K.; Li, P. W.; Yan, B.; Wang, B.-J.: 1,4-Dihydropyridine derivatives: synthesis and anti-hepatoma cancer activity. Lat. Am. J. Pharm. 35 (2016) 1692–1695.10.15199/62.2017.4.34Search in Google Scholar

Gündüz, M. G.; Celebi, S.; Kaygisiz, B.; Safak, C.: 7-Substituted hexahydroquinoline derivatives and their calcium channel modulator effects. Lat. Am. J. Pharm. 28 (2009) 922–926.Search in Google Scholar

Dolomanov, O. V.; Bourhis, L. J.; Gildea, R. J.; Howard, J. A. K.; Puschmann, H.: OLEX2: a complete structure solution, refinement and analysis program. J. Appl. Crystallogr. 42 (2009). 339–341.10.1107/S0021889808042726Search in Google Scholar

Sheldrick, G. M.: Crystal structure refinement with SHELXL. Acta Crystallogr. C71 (2015) 3–8.10.1107/S2053229614024218Search in Google Scholar PubMed PubMed Central

Bruker. APEX2. Bruker AXS Inc., Madison, WI, USA (2008).Search in Google Scholar

Zhang, G.-H.: Crystal structure of 2-amino-4-(3,4- difluorophenyl)-5-oxo-5,6,7,8-tetrahydro-4H-chromene-3-carbonitrile, C16H12N2O2F2. Z. Kristallogr. NCS 231 (2016) 223–224.10.1515/ncrs-2015-0097Search in Google Scholar

Received: 2018-03-12
Accepted: 2018-06-12
Published Online: 2018-06-29
Published in Print: 2018-08-28

©2018 Qing-Hua Meng et al., published by De Gruyter, Berlin/Boston

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.

Articles in the same Issue

  1. Cover and Frontmatter
  2. Crystal structure of 2-amino-4-(2,4-dinitrophenyl)-3-cyano-7,7-dimethyl-5-oxo-4H-5,6,7,8-tetrahydrobenzo-pyran, C18H16N4O6
  3. Crystal structure of catena-poly[(μ3-5-carboxy-2-(pyridin-4-yl)benzoato-κ5O,O′:O′′,O′′′:O′′′)(1,10-phenanthroline-κ2N,N′)cadmium(II)], C100H60N12O16Cd4
  4. Crystal structure of 2-amino-4-(3,4,5-trimethoxy-phenyl)-7-methyl-5-oxo-4H,5H-pyrano[4,3-b]pyran-3-carbonitrile, C19H18N2O6
  5. Crystal structure of 1-{4-[(2-hydroxy-5-methyl benzylidene)amino]phenyl}ethanone O-ethyl-oxime, C18H20N2O2
  6. Crystal structure of bis{4-methyl-2-((E)-((4-((E)-1-(ethoxyimino)ethyl)phenyl)imino)methyl)phenolato-κ2N,O)}copper(II), C36H38CuN4O4
  7. Crystal structure of bis{5-methoxy-2-((E)-((4-((E)-1-(methoxyimino)ethyl)phenyl)imino)methyl)phenolato-κ2N,O}nickel(II), C34H34N4NiO6
  8. Crystal structure of poly[μ8-3-carboxyphthalat-κ8-O:O1,O1,O1:O2:O3,O3:O4)silver(I)], C9H4Ag2O6
  9. Crystal structure of 2-((E)-((4-((E)-1-(hydroxyimino)ethyl)phenyl)iminio)methyl)-5-methoxyphenolate, C16H16N2O3
  10. Crystal structure of (E)-1-(4-(((E)-2-hydroxy-3-methoxybenzylidene)amino)phenyl)ethan-1-one oxime, C16H16N2O3
  11. The crystal structure of 2-(tert-butyl)-4-chloro-6-phenyl-1,3,5-triazine, C13H14Cl1N3
  12. Crystal structure of (6,6′-(((((2-aminoethyl)azanediyl)bis(ethane-2,1-diyl))bis(azanylylidene))bis(methanylylidene))bis(2,4-dichlorophenolato)-κ6N,N′,N′′,N′′′,O,O′)cadmium(II) – ethanol – water (1/1/1), C22H28CdCl4N4O4
  13. Crystal structure of 6-chloro-N-methylpyrimidin-4-amine, C5H6ClN3
  14. Synthesis and crystal structure of bis{((E)-((4-((E)-1-(methoxyimino)ethyl)phenyl)imino)methyl)-2-naphtholato-κ2N,O}nickel(II), C40H34N4NiO4
  15. Crystal structure of (E)-2-(4-bromophenyl)ethenesulfonyl fluoride (C8H6BrFO2S)
  16. Synthesis and crystal structure of 2,2′-ethylenedioxybis(benzimide)-2,2′-bis[O-(1-propyloxyamide)]oxime-4,4′,6,6′-tetrachlorodiphenol, C36H34Cl4N4O8
  17. Crystal structure of bis(N-(1-(pyrazin-2-yl)ethylidene)nicotinohydrazonato-κ3N,N′,O)cadmium(II) – methanol (1/1), C26H28N10O4Zn
  18. Crystal structure of diaqua-(N-(1-(pyrazin-2-yl)ethylidene)nicotinohydrazonato-κ3N,N′,O)-bis(nitrato-κ2O,O′)samarium(III), C12H14N7O9Sm
  19. Crystal structure of hexaaqua-{(E)-N′-(1-(pyrazin-2-yl)ethylidene)isonicotinohydrazide-κ3N,N′,O}praseodym(III) trichloride monohydrate, C12H25Cl3N5O8Pr
  20. Crystal structure of methyl 4-(3-cyanophenyl)-2,7,7-trimethyl-5-oxo-1,4,5,6,7,8-hexahydro-quinoline-3-carboxylate, C21H22N2O3
  21. Crystal structure of ethyl 2-amino-4-(2-methoxyphenyl)-5-oxo-4H,5H-pyrano[3,2-c]chromene-3-carboxylate, C22H19NO6
  22. Crystal structure of 2,12-dibromo-5,15-dihexyl-5,15-dihydrobenzo [1,2-b:5,6-c′]dicarbazole, C38H38Br2N2
  23. Crystal structure of ethyl 2-amino-4-(3-hydroxy-4-methoxyphenyl)-5-oxo-4H,5H-pyrano[3,2-c]chromene-3-carboxylate, C22H19NO7
  24. Crystal structure of ethyl 2-amino-4-(3,4-dimethylphenyl)-5-oxo-4H,5H-pyrano[3,2-c] chromene-3-carboxylate, C23H21NO5
  25. Crystal structure of 2-hydroxy-N′-(pyrimidin-2-yl)benzohydrazide, C11H10N4O2
  26. Crystal structure of 2-(3,4-dimethylphenyl)-1,8-naphthyridine, C16H14N2
  27. Crystal structure of ethyl 4-(3,4-dimethylphenyl)-2,7,7-trimethyl-5-oxo-1,4,5,6,7,8-hexahydroquinoline-3-carboxylate, C23H29NO3
  28. Crystal structure of ethyl 4-(3-cyanophenyl)-2,7,7-trimethyl-5-oxo-1,4,5,6,7,8-hexahydroquinoline-3-carboxylate, C22H24N2O3
  29. Crystal structure of 7β,9β-dihydroxy-15-oxo-ent-kauran-16-en-19,6β-olide, C20H26O5
  30. Crystal structure of Ent-7β,20-epoxy-kaur-16-en-1β,6α,7α,14α,15α-pentaol-20-one, C20H30O8
  31. Crystal structure of 1,4-bis(benzo[d][1,3]dioxol-5-ylmethyl)dihydro-1H,3H-furo[3,4-c]furan-3a(4H)-yl acetate, C22H20O8
  32. Crystal structure of methyl 2-((4-((2-nitrophenoxy)methyl)-1H-1,2,3-triazol-1-yl)methyl) benzoate, C18H16N4O5
  33. Crystal structure of diaqua-bis(5-carboxy-1-methyl-1H-imidazole-4-carboxylato-κ2N,O)zinc(II), C12H14N4O10Zn
  34. Hydrothemal synthesis and crystal structure of triaqua-bis(5-carboxy-1-methyl-1H-imidazole-4-carboxylato-κ2N,O;κ1O)manganese(II), C12H16N4O11Mn
  35. Redetermination of methyl 4-(4-chlorophenyl)-2,7,7-trimethyl-5-oxo-1,4,5,6,7,8-hexahydro-quinoline-3-carboxylate, C20H22ClNO3
  36. Crystal structure of bis{1-[(benzotriazol-1-yl)methyl]-1-H-1,3-(2-methyl-imdazol)-κN}-dithiocyano-κN-zinc(II) C24H22N12S2Zn
  37. Crystal structure of (5-fluoro-2,4-dioxo-3,4-dihydropyrimidin-1(2H)-yl)methyl furan-2-carboxylate, C10H7FN2O5
  38. Crystal structure of bis(η6-cymene)-tri-μ2-chlorido-ruthenium(II) tetrafluoroborate, C20H28BCl3F4Ru2
  39. Crystal structure of 3,6-diphenyl-7H-[1,2,4]-triazolo[3,4-b][1,3,4]thiadiazine, C16H12N4S
  40. Synthesis and crystal structure of 1,3-bis[(3,4-dicyano)phenoxy]-4,6-dinitro-benzene, C22H8N6O6
  41. Crystal structure of ethyl 2-amino-4-(2,6-dichlorophenyl)-7-methyl-5-oxo-4H,5H-pyrano [4,3-b]pyran-3-carboxylate, C18H15Cl2NO5
  42. Crystal structure of poly[μ3-hydroxy-(μ5-(5-(2-carboxylatophenoxy)isophthalato-κ6O1:O2:O3:O4:O5,O6)-(μ2-1,4-di(1H-imidazol-1-yl)butane-κ2N:N′)dicobalt(II)] hemihydrate, C25H22Co2N4O8.5
  43. Crystal structure of methyl 4-(4-bromophenyl)-2,7,7-trimethyl-5-oxo-1,4,5,6,7,8-hexahydroquinoline-3-carboxylate, C20H22BrNO3
  44. Crystal structure of 9,10-dimethoxy-5,6-dihydro-[1,3]dioxolo[4,5-g]isoquinolino[3,2-a]isoquinolin-7-ium 5-hydroxy-2-(4-hydroxyphenyl)-4-oxo-4H-chromen-7-olate trihydrate, C35H33NO12
  45. Crystal structure of 2,5-bis(4-(10H-phenothiazin-10-yl)phenyl)-1,3,4-oxadiazole, C38H24N4OS2
  46. The crystal structure of (E)-2-(4-hydroxyphenyl)-5-(prop-1-en-1-yl)benzofuran-3-carbaldehyde, C18H14O3
  47. Crystal structure of bis{5H-dibenzo[c,f][1,5]oxabismocin-12(7H)-yl} carbonate, C29H24O5Bi2
  48. Crystal structure of ethyl-5-formyl-3,4-dimethylpyrrole-2-carboxylate — N-(5-ethoxycarbonyl-3,4-dimethylpyrrole)-2-methylene-5-nitrobenzene-1,2-diamine (1:1), C26H31N5O7
  49. Crystal structure of (E)-2-(1-((2-aminophenyl)imino)ethyl)-6-bromo-4-chlorophenol, C14H12BrClN2O
  50. Crystal structure of (Z)-2-(4-chlorophenyl)-4-(furan-2-yl(phenylamino)methylene)-5-methyl-2,4-dihydro-3H-pyrazol-3-one, C21H16ClN3O2
  51. Crystal structure of N2,N4-dibutyl-6-chloro-N2,N4-bis(1,2,2,6,6-pentamethylpiperidin-4-yl)-1,3,5-triazine-2,4-diamine, C31H58ClN7 – Important intermediate of Chimassorb 119 synthesis
  52. Crystal structure of 1-(5-bromo-2-(4-methoxyphenyl)-1H-indol-7-yl)ethanone oxime, C17H15BrN2O2
  53. Crystal structure of poly-{diaqua-bis[(μ2-3-nitrobenzenesulfonylglycine-κ3N:O:O′)(4,4′-bipyridine)manganese(II)]}-dimethylformamide (1/1), C39H35Mn2N9O15S2
  54. Crystal structure of 4-(dimethylamino)-1-(prop-2-yn-1-yl)pyridin-1-ium perchlorate, C10H13ClN2O4
  55. Crystal structure of 2-amino-5-oxo-4-(4-chloro-phenyl)-4,5,6,7-tetrahydro-cyclopenta[b]pyran-3-carbonitrile, C15H11ClN2O2
  56. Crystal structure of triaqua-(pyridine-2,6-dicarboxylato-κ3O,N,O′)cobalt(II) – 6-phenyl-1,3,5-triazine-2,4-diamine (1/1), C16H18CoN6O7
  57. Crystal structure of ethyl 2-amino-4-(3-cyanophenyl)-7,7-dimethyl-5-oxo-5,6,7,8-tetrahydro-4H-chromene-3-carboxylate, C21H22N2O4
  58. Crystal structure of 2-(4-chloro-2,6-dinitrophenyl)-1-(4-chloro-3-nitrophenyl)diazene 1-oxide, C12H5Cl2N5O7
  59. Crystal structure of 3,4-dimethyl-2,6-dinitrophenol, C8H8N2O5
  60. Crystal structure of 1,2-dimethyl-3,5-dinitrobenzene, C8H8N2O4
  61. Crystal structure of ethyl 4-(3-chlorophenyl)-2,7,7-trimethyl-5-oxo-1,4,5,6,7,8-hexahydroquinoline-3-carboxylate, C21H24ClNO3
  62. Crystal structure of N-(4-chlorophenyl)-2-(2,6-dichlorophenyl)acetamide, C14H10Cl3NO
  63. Crystal structure of 2-amino-4-(4-fluorophenyl)-3-cyano-5-oxo-4H,5H-pyrano[3,2c] chromene, C19H11FN2O3
  64. The crystal structure of (4-nitrophenyl) (5-ferrocenyl-3-(trifluoromethyl)-1H-pyrazol-1-yl) methanone, C21H12F3FeN3O3
  65. Crystal structure of 5,5′-((3-hydroxy-4-methoxyphenyl)methylene)bis(1,3-diethyl-6-hydroxy-2-thioxo-2,3-dihydropyrimidin-4(1H)-one), C24H30N4O6S2
  66. Crystal structure of (3aR,4R,5R,7R,8S,9R,9aS,12R)-7-ethyl-5-(1-hydroxy-2-((R)-3-hydroxypyrrolidin-1-yl)ethoxy)-4,7,9,12-tetramethyldecahydro-4,9a-propanocyclopenta[8]annulene-3,8-diol – a pleuromutilin derivative, C26H41NO5
  67. Crystal structure of bis(μ2-3-formyl-5-methoxy-2-oxidobenzoato-κ3O,O′:O′)-hexapyridine-dicadmium(II) – pyridine (1/1), C53H47Cd2N7O10
  68. Crystal structure of ethyl 2-amino-4-(3-methoxyphenyl)-5-oxo-4H,5H-pyrano[3,2-c]chromene-3-carboxylate, C22H19NO6
  69. Crystal structure of methyl 4-(3,5-ditrifluoromethylphenyl)-2,7,7-trimethyl-5-oxo-1,4,5,6,7,8-hexahydroquinoline-3-carboxylate — water (2/1), C22H21F6NO3
  70. Crystal structure of 2-(4-bromophenyl)-2,3-dihydro-1H-perimidine, C17H13BrN2
  71. Crystal structure of (5-ethyl-2-(4-methoxyphenyl)-1,3-dioxan-5-yl)methanol, C14H20O4
  72. Crystal structure of (E)-N-(4-bromo-2-(1-(hydroxyimino)ethyl)phenyl)benzamide, C15H13BrN2O2
  73. Crystal structure of caffeinium triiodide – caffeine (1/1), C16H21I3N8O4
  74. Crystal structure of methyl 2-methyl-4-(3-methoxyphenyl)-5-oxo-1,4,5,6,7,8-hexahydroquinoline-3-carboxylate, C19H21NO4
  75. Crystal structure of (E)-3-(3,5-di-tert-butyl-4-hydroxyphenyl)-1-phenylprop-2-en-1-one, C23H28O2
  76. Crystal structure of 1,4-bis(2-azidoethyl)piperazine-1,4-diium dichloride, C8H18N8Cl2
  77. The crystal structure of dichlorido-(1,3-bis(2,6-dimethylphenyl)-1H-imidazol-2(3H)-ylidene)-(morpholine-κ1N)palladium(II), C23H29Cl2N3OPd(II)
  78. The crystal structure of 1-((5-chloro-3-methyl-1-phenyl-1H-pyrazole-4-yl)methyl)-1,3-diphenylurea, C24H21ClN4O
  79. Crystal structure of 6-(2-bromoacetamido)tetrahydro-2H-pyran-2,3,4,5-Tetrayl tetraacetate, C16H22BrNO10
  80. Crystal structure of 5-methylpyrazine-2-carbohydrazide, C6H8N4O
  81. Crystal structure of catena-poly[(μ2-5-(tert-butyl)isophthalato-κ4O,O′:O′′,O′′′)(-4′-(pyridin-4-yl)-2,2′:6′,2′′-terpyridine-κ3N,N′,N′′)manganese(II)], C32H28N4O5Mn
https://doi.org/10.1515/ncrs-2018-0017
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Articles in the same Issue

  1. Cover and Frontmatter
  2. Crystal structure of 2-amino-4-(2,4-dinitrophenyl)-3-cyano-7,7-dimethyl-5-oxo-4H-5,6,7,8-tetrahydrobenzo-pyran, C18H16N4O6
  3. Crystal structure of catena-poly[(μ3-5-carboxy-2-(pyridin-4-yl)benzoato-κ5O,O′:O′′,O′′′:O′′′)(1,10-phenanthroline-κ2N,N′)cadmium(II)], C100H60N12O16Cd4
  4. Crystal structure of 2-amino-4-(3,4,5-trimethoxy-phenyl)-7-methyl-5-oxo-4H,5H-pyrano[4,3-b]pyran-3-carbonitrile, C19H18N2O6
  5. Crystal structure of 1-{4-[(2-hydroxy-5-methyl benzylidene)amino]phenyl}ethanone O-ethyl-oxime, C18H20N2O2
  6. Crystal structure of bis{4-methyl-2-((E)-((4-((E)-1-(ethoxyimino)ethyl)phenyl)imino)methyl)phenolato-κ2N,O)}copper(II), C36H38CuN4O4
  7. Crystal structure of bis{5-methoxy-2-((E)-((4-((E)-1-(methoxyimino)ethyl)phenyl)imino)methyl)phenolato-κ2N,O}nickel(II), C34H34N4NiO6
  8. Crystal structure of poly[μ8-3-carboxyphthalat-κ8-O:O1,O1,O1:O2:O3,O3:O4)silver(I)], C9H4Ag2O6
  9. Crystal structure of 2-((E)-((4-((E)-1-(hydroxyimino)ethyl)phenyl)iminio)methyl)-5-methoxyphenolate, C16H16N2O3
  10. Crystal structure of (E)-1-(4-(((E)-2-hydroxy-3-methoxybenzylidene)amino)phenyl)ethan-1-one oxime, C16H16N2O3
  11. The crystal structure of 2-(tert-butyl)-4-chloro-6-phenyl-1,3,5-triazine, C13H14Cl1N3
  12. Crystal structure of (6,6′-(((((2-aminoethyl)azanediyl)bis(ethane-2,1-diyl))bis(azanylylidene))bis(methanylylidene))bis(2,4-dichlorophenolato)-κ6N,N′,N′′,N′′′,O,O′)cadmium(II) – ethanol – water (1/1/1), C22H28CdCl4N4O4
  13. Crystal structure of 6-chloro-N-methylpyrimidin-4-amine, C5H6ClN3
  14. Synthesis and crystal structure of bis{((E)-((4-((E)-1-(methoxyimino)ethyl)phenyl)imino)methyl)-2-naphtholato-κ2N,O}nickel(II), C40H34N4NiO4
  15. Crystal structure of (E)-2-(4-bromophenyl)ethenesulfonyl fluoride (C8H6BrFO2S)
  16. Synthesis and crystal structure of 2,2′-ethylenedioxybis(benzimide)-2,2′-bis[O-(1-propyloxyamide)]oxime-4,4′,6,6′-tetrachlorodiphenol, C36H34Cl4N4O8
  17. Crystal structure of bis(N-(1-(pyrazin-2-yl)ethylidene)nicotinohydrazonato-κ3N,N′,O)cadmium(II) – methanol (1/1), C26H28N10O4Zn
  18. Crystal structure of diaqua-(N-(1-(pyrazin-2-yl)ethylidene)nicotinohydrazonato-κ3N,N′,O)-bis(nitrato-κ2O,O′)samarium(III), C12H14N7O9Sm
  19. Crystal structure of hexaaqua-{(E)-N′-(1-(pyrazin-2-yl)ethylidene)isonicotinohydrazide-κ3N,N′,O}praseodym(III) trichloride monohydrate, C12H25Cl3N5O8Pr
  20. Crystal structure of methyl 4-(3-cyanophenyl)-2,7,7-trimethyl-5-oxo-1,4,5,6,7,8-hexahydro-quinoline-3-carboxylate, C21H22N2O3
  21. Crystal structure of ethyl 2-amino-4-(2-methoxyphenyl)-5-oxo-4H,5H-pyrano[3,2-c]chromene-3-carboxylate, C22H19NO6
  22. Crystal structure of 2,12-dibromo-5,15-dihexyl-5,15-dihydrobenzo [1,2-b:5,6-c′]dicarbazole, C38H38Br2N2
  23. Crystal structure of ethyl 2-amino-4-(3-hydroxy-4-methoxyphenyl)-5-oxo-4H,5H-pyrano[3,2-c]chromene-3-carboxylate, C22H19NO7
  24. Crystal structure of ethyl 2-amino-4-(3,4-dimethylphenyl)-5-oxo-4H,5H-pyrano[3,2-c] chromene-3-carboxylate, C23H21NO5
  25. Crystal structure of 2-hydroxy-N′-(pyrimidin-2-yl)benzohydrazide, C11H10N4O2
  26. Crystal structure of 2-(3,4-dimethylphenyl)-1,8-naphthyridine, C16H14N2
  27. Crystal structure of ethyl 4-(3,4-dimethylphenyl)-2,7,7-trimethyl-5-oxo-1,4,5,6,7,8-hexahydroquinoline-3-carboxylate, C23H29NO3
  28. Crystal structure of ethyl 4-(3-cyanophenyl)-2,7,7-trimethyl-5-oxo-1,4,5,6,7,8-hexahydroquinoline-3-carboxylate, C22H24N2O3
  29. Crystal structure of 7β,9β-dihydroxy-15-oxo-ent-kauran-16-en-19,6β-olide, C20H26O5
  30. Crystal structure of Ent-7β,20-epoxy-kaur-16-en-1β,6α,7α,14α,15α-pentaol-20-one, C20H30O8
  31. Crystal structure of 1,4-bis(benzo[d][1,3]dioxol-5-ylmethyl)dihydro-1H,3H-furo[3,4-c]furan-3a(4H)-yl acetate, C22H20O8
  32. Crystal structure of methyl 2-((4-((2-nitrophenoxy)methyl)-1H-1,2,3-triazol-1-yl)methyl) benzoate, C18H16N4O5
  33. Crystal structure of diaqua-bis(5-carboxy-1-methyl-1H-imidazole-4-carboxylato-κ2N,O)zinc(II), C12H14N4O10Zn
  34. Hydrothemal synthesis and crystal structure of triaqua-bis(5-carboxy-1-methyl-1H-imidazole-4-carboxylato-κ2N,O;κ1O)manganese(II), C12H16N4O11Mn
  35. Redetermination of methyl 4-(4-chlorophenyl)-2,7,7-trimethyl-5-oxo-1,4,5,6,7,8-hexahydro-quinoline-3-carboxylate, C20H22ClNO3
  36. Crystal structure of bis{1-[(benzotriazol-1-yl)methyl]-1-H-1,3-(2-methyl-imdazol)-κN}-dithiocyano-κN-zinc(II) C24H22N12S2Zn
  37. Crystal structure of (5-fluoro-2,4-dioxo-3,4-dihydropyrimidin-1(2H)-yl)methyl furan-2-carboxylate, C10H7FN2O5
  38. Crystal structure of bis(η6-cymene)-tri-μ2-chlorido-ruthenium(II) tetrafluoroborate, C20H28BCl3F4Ru2
  39. Crystal structure of 3,6-diphenyl-7H-[1,2,4]-triazolo[3,4-b][1,3,4]thiadiazine, C16H12N4S
  40. Synthesis and crystal structure of 1,3-bis[(3,4-dicyano)phenoxy]-4,6-dinitro-benzene, C22H8N6O6
  41. Crystal structure of ethyl 2-amino-4-(2,6-dichlorophenyl)-7-methyl-5-oxo-4H,5H-pyrano [4,3-b]pyran-3-carboxylate, C18H15Cl2NO5
  42. Crystal structure of poly[μ3-hydroxy-(μ5-(5-(2-carboxylatophenoxy)isophthalato-κ6O1:O2:O3:O4:O5,O6)-(μ2-1,4-di(1H-imidazol-1-yl)butane-κ2N:N′)dicobalt(II)] hemihydrate, C25H22Co2N4O8.5
  43. Crystal structure of methyl 4-(4-bromophenyl)-2,7,7-trimethyl-5-oxo-1,4,5,6,7,8-hexahydroquinoline-3-carboxylate, C20H22BrNO3
  44. Crystal structure of 9,10-dimethoxy-5,6-dihydro-[1,3]dioxolo[4,5-g]isoquinolino[3,2-a]isoquinolin-7-ium 5-hydroxy-2-(4-hydroxyphenyl)-4-oxo-4H-chromen-7-olate trihydrate, C35H33NO12
  45. Crystal structure of 2,5-bis(4-(10H-phenothiazin-10-yl)phenyl)-1,3,4-oxadiazole, C38H24N4OS2
  46. The crystal structure of (E)-2-(4-hydroxyphenyl)-5-(prop-1-en-1-yl)benzofuran-3-carbaldehyde, C18H14O3
  47. Crystal structure of bis{5H-dibenzo[c,f][1,5]oxabismocin-12(7H)-yl} carbonate, C29H24O5Bi2
  48. Crystal structure of ethyl-5-formyl-3,4-dimethylpyrrole-2-carboxylate — N-(5-ethoxycarbonyl-3,4-dimethylpyrrole)-2-methylene-5-nitrobenzene-1,2-diamine (1:1), C26H31N5O7
  49. Crystal structure of (E)-2-(1-((2-aminophenyl)imino)ethyl)-6-bromo-4-chlorophenol, C14H12BrClN2O
  50. Crystal structure of (Z)-2-(4-chlorophenyl)-4-(furan-2-yl(phenylamino)methylene)-5-methyl-2,4-dihydro-3H-pyrazol-3-one, C21H16ClN3O2
  51. Crystal structure of N2,N4-dibutyl-6-chloro-N2,N4-bis(1,2,2,6,6-pentamethylpiperidin-4-yl)-1,3,5-triazine-2,4-diamine, C31H58ClN7 – Important intermediate of Chimassorb 119 synthesis
  52. Crystal structure of 1-(5-bromo-2-(4-methoxyphenyl)-1H-indol-7-yl)ethanone oxime, C17H15BrN2O2
  53. Crystal structure of poly-{diaqua-bis[(μ2-3-nitrobenzenesulfonylglycine-κ3N:O:O′)(4,4′-bipyridine)manganese(II)]}-dimethylformamide (1/1), C39H35Mn2N9O15S2
  54. Crystal structure of 4-(dimethylamino)-1-(prop-2-yn-1-yl)pyridin-1-ium perchlorate, C10H13ClN2O4
  55. Crystal structure of 2-amino-5-oxo-4-(4-chloro-phenyl)-4,5,6,7-tetrahydro-cyclopenta[b]pyran-3-carbonitrile, C15H11ClN2O2
  56. Crystal structure of triaqua-(pyridine-2,6-dicarboxylato-κ3O,N,O′)cobalt(II) – 6-phenyl-1,3,5-triazine-2,4-diamine (1/1), C16H18CoN6O7
  57. Crystal structure of ethyl 2-amino-4-(3-cyanophenyl)-7,7-dimethyl-5-oxo-5,6,7,8-tetrahydro-4H-chromene-3-carboxylate, C21H22N2O4
  58. Crystal structure of 2-(4-chloro-2,6-dinitrophenyl)-1-(4-chloro-3-nitrophenyl)diazene 1-oxide, C12H5Cl2N5O7
  59. Crystal structure of 3,4-dimethyl-2,6-dinitrophenol, C8H8N2O5
  60. Crystal structure of 1,2-dimethyl-3,5-dinitrobenzene, C8H8N2O4
  61. Crystal structure of ethyl 4-(3-chlorophenyl)-2,7,7-trimethyl-5-oxo-1,4,5,6,7,8-hexahydroquinoline-3-carboxylate, C21H24ClNO3
  62. Crystal structure of N-(4-chlorophenyl)-2-(2,6-dichlorophenyl)acetamide, C14H10Cl3NO
  63. Crystal structure of 2-amino-4-(4-fluorophenyl)-3-cyano-5-oxo-4H,5H-pyrano[3,2c] chromene, C19H11FN2O3
  64. The crystal structure of (4-nitrophenyl) (5-ferrocenyl-3-(trifluoromethyl)-1H-pyrazol-1-yl) methanone, C21H12F3FeN3O3
  65. Crystal structure of 5,5′-((3-hydroxy-4-methoxyphenyl)methylene)bis(1,3-diethyl-6-hydroxy-2-thioxo-2,3-dihydropyrimidin-4(1H)-one), C24H30N4O6S2
  66. Crystal structure of (3aR,4R,5R,7R,8S,9R,9aS,12R)-7-ethyl-5-(1-hydroxy-2-((R)-3-hydroxypyrrolidin-1-yl)ethoxy)-4,7,9,12-tetramethyldecahydro-4,9a-propanocyclopenta[8]annulene-3,8-diol – a pleuromutilin derivative, C26H41NO5
  67. Crystal structure of bis(μ2-3-formyl-5-methoxy-2-oxidobenzoato-κ3O,O′:O′)-hexapyridine-dicadmium(II) – pyridine (1/1), C53H47Cd2N7O10
  68. Crystal structure of ethyl 2-amino-4-(3-methoxyphenyl)-5-oxo-4H,5H-pyrano[3,2-c]chromene-3-carboxylate, C22H19NO6
  69. Crystal structure of methyl 4-(3,5-ditrifluoromethylphenyl)-2,7,7-trimethyl-5-oxo-1,4,5,6,7,8-hexahydroquinoline-3-carboxylate — water (2/1), C22H21F6NO3
  70. Crystal structure of 2-(4-bromophenyl)-2,3-dihydro-1H-perimidine, C17H13BrN2
  71. Crystal structure of (5-ethyl-2-(4-methoxyphenyl)-1,3-dioxan-5-yl)methanol, C14H20O4
  72. Crystal structure of (E)-N-(4-bromo-2-(1-(hydroxyimino)ethyl)phenyl)benzamide, C15H13BrN2O2
  73. Crystal structure of caffeinium triiodide – caffeine (1/1), C16H21I3N8O4
  74. Crystal structure of methyl 2-methyl-4-(3-methoxyphenyl)-5-oxo-1,4,5,6,7,8-hexahydroquinoline-3-carboxylate, C19H21NO4
  75. Crystal structure of (E)-3-(3,5-di-tert-butyl-4-hydroxyphenyl)-1-phenylprop-2-en-1-one, C23H28O2
  76. Crystal structure of 1,4-bis(2-azidoethyl)piperazine-1,4-diium dichloride, C8H18N8Cl2
  77. The crystal structure of dichlorido-(1,3-bis(2,6-dimethylphenyl)-1H-imidazol-2(3H)-ylidene)-(morpholine-κ1N)palladium(II), C23H29Cl2N3OPd(II)
  78. The crystal structure of 1-((5-chloro-3-methyl-1-phenyl-1H-pyrazole-4-yl)methyl)-1,3-diphenylurea, C24H21ClN4O
  79. Crystal structure of 6-(2-bromoacetamido)tetrahydro-2H-pyran-2,3,4,5-Tetrayl tetraacetate, C16H22BrNO10
  80. Crystal structure of 5-methylpyrazine-2-carbohydrazide, C6H8N4O
  81. Crystal structure of catena-poly[(μ2-5-(tert-butyl)isophthalato-κ4O,O′:O′′,O′′′)(-4′-(pyridin-4-yl)-2,2′:6′,2′′-terpyridine-κ3N,N′,N′′)manganese(II)], C32H28N4O5Mn
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