Startseite Crystal structure of 4-(1-phenylimidazo[1,5-a]pyridin-3-yl)benzoic acid (C20H14N2O2)
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Crystal structure of 4-(1-phenylimidazo[1,5-a]pyridin-3-yl)benzoic acid (C20H14N2O2)

  • Adeleke A. Adesola , Sizwe J. Zamisa ORCID logo EMAIL logo und Bernard Omondi ORCID logo
Veröffentlicht/Copyright: 27. September 2019

Abstract

C20H14N2O2, monoclinic, C2/c (no. 15), a = 17.8410(5) Å, b = 15.3081(4) Å, c = 11.3881(3) Å, β = 104.280(1)°, V = 3014.12(14) Å3, Z = 8, Rgt(F) = 0.0364, wRref(F2) = 0.0997, T = 100(2) K.

CCDC no.: 1940906

The molecular structure is shown in the figure. Table 1 contains crystallographic data and Table 2 contains the list of the atoms including atomic coordinates and displacement parameters.

Table 1:

Data collection and handling.

Crystal:Yellow needle
Size:0.27 × 0.16 × 0.11 mm
Wavelength:Mo Kα radiation (0.71073 Å)
μ:0.09 mm−1
Diffractometer, scan mode:Bruker SMART APEX-II, φ and ω
θmax, completeness:26.0°, 98%
N(hkl)measured, N(hkl)unique, Rint:9187, 2897, 0.018
Criterion for Iobs, N(hkl)gt:Iobs > 2 σ(Iobs), 2410
N(param)refined:219
Programs:Bruker [1], SHELX [2], [3], Mercury [4]
Table 2:

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

AtomxyzUiso*/Ueq
O10.45803(6)0.58344(6)0.89839(9)0.0332(2)
H1a0.4855220.5713110.9676030.050*
O20.45394(6)0.43778(6)0.88330(10)0.0336(3)
H2a0.4790680.4425880.9558130.050*
N10.20104(7)0.46362(7)0.31121(11)0.0273(3)
N20.22653(6)0.60197(7)0.27783(11)0.0261(3)
C10.08324(8)0.34730(8)0.17026(15)0.0323(3)
H1A0.0896670.3443320.2554960.039*
C20.04545(8)0.28042(9)0.09727(16)0.0383(4)
H2A0.0259860.2320300.1328160.046*
C30.03580(8)0.28345(10)−0.02699(16)0.0398(4)
H30.0109280.236780−0.0765690.048*
C40.06266(8)0.35498(10)−0.07829(15)0.0389(4)
H40.0555270.357907−0.1636680.047*
C50.09999(8)0.42253(9)−0.00583(14)0.0333(3)
H50.1175760.471745−0.0422800.040*
C60.11203(7)0.41922(8)0.11944(13)0.0274(3)
C70.15896(8)0.48505(8)0.19842(13)0.0266(3)
C80.17283(8)0.57220(8)0.17395(13)0.0270(3)
C90.14577(8)0.63081(9)0.07735(14)0.0317(3)
H90.1067130.6132060.0085720.038*
C100.17598(8)0.71284(9)0.08326(15)0.0357(4)
H100.1573820.7529730.0190500.043*
C110.23537(8)0.73849(9)0.18550(14)0.0333(3)
H110.2580190.7947740.1870200.040*
C120.25989(8)0.68422(8)0.28002(14)0.0294(3)
H120.2996950.7019310.3477440.035*
C130.24128(8)0.53362(8)0.35861(13)0.0261(3)
C140.29179(8)0.53397(8)0.48083(13)0.0264(3)
C150.32061(8)0.45291(8)0.52923(13)0.0285(3)
H150.3080960.4017520.4811620.034*
C160.36645(8)0.44626(8)0.64448(13)0.0285(3)
H160.3851930.3906810.6755570.034*
C170.38587(7)0.52053(8)0.71677(13)0.0267(3)
C180.35693(8)0.60152(8)0.66987(13)0.0288(3)
H180.3697010.6525650.7181020.035*
C190.31004(8)0.60802(8)0.55434(13)0.0291(3)
H190.2899040.6633350.5242930.035*
C200.43548(8)0.51214(8)0.83985(13)0.0276(3)
  1. aOccupancy: 0.5.

Source of material

To anhydrous ethanol solution (10 mL) of 2-benzoylpyridine (1 mmol, 0.183 g) was added anhydrous ethanol solution (15 mL) of 4-(aminomethyl)benzoic acid (1 mmol, 0.151 g) in the presence of few drops of concentrated hydrochloric acid as a catalyst and refluxed at 80 °C for 48 h using a modified procedure from literature [5], [6]. The resulting off-white solid was isolated by filtration and washed three times with small amounts of ethanol and the white solid was then recrystallized from a solution of ethanol to give a needle crystals. Yield: (55.74%, 0.175 g), m.p.: 186–187 °C; 1H-NMR: (400 MHz, CD3OD) δ ppm = 8.60 (1H, d), 8.37 (2H, d, J = 8.70 Hz), 8.10 (3H, m), 7.89 (2H, m), 7.67 (2H, m), 7.59 (1H, m), 7.40 (1H, m), 7.26 (1H, m), 4.89 (2H, s); 13C-NMR: (400 MHz, CD3OD) δ ppm = 168.24, 135.27, 131.95, 131.03, 130.90, 130.77, 130.68, 129.15, 128.82, 128.14, 127.63, 126.57, 126.45, 123.75, 120.19, 120.10. MS (ESI): m/z Calc. for [C20H14N2O2]: 314.34; found [M+]: 315 (100%), 316 (24%).

Experimental details

The structure was solved by the direct method using the SHELXS [2] program and refined. The visual crystal structure information was performed using Mercury [4] system software. The C—H and O—H distances were restrained to 0.950 Å and 0.84 Å, respectively with Uiso(H) = 1.2Ueq(C) and Uiso(H) = 1.5Ueq(O). The carboxylate hydrogen was found to be disordered over two positions.

Comment

Heterocyclic compounds possessing both the imidazole and pyridines moieties are of great importance as ligands in inorganic synthesis [7]. The title compound is known to be present in the structures of some biologically active compounds, thus giving it some importance. The compound has a great potential to be applied in other fields such as material science [8], organic synthesis [9], in lighting and photovoltaic technologies [8], and in pharmaceutical science where imidazole[1,5-a]pyridines moiety has been shown to be active against HIV protease [10], as a cardiotonic agent [11] and also as an anti-tumour agent [12] among others. They are also known to be used as precursors for synthesis of N-heterocyclic carbenes [13], as ligands in coordination chemistry [14] and as pH-probes [15]. A number of methods have been used in the preparation of an imidazole[1,5-a]pyridine. One is the Vilsmeier-type cyclization reaction along with the variant methods [16], [17]. Other methods involve the usage of organometallic catalysts [18] or an oxidant [19] and also the one-pot condensation reactions of amines and aldehydes [20], [21]. In an attempt to synthesize a Schiff base using the one-pot condensation reaction using 4-(aminomethyl)benzoic acid and 2-benzoylpyridine, imidazole[1,5-a]pyridine moiety was isolated as a product in agreement with Wang et al. [20] and Volpi et al. [21].

The asymmetric unit of the title compound contains one molecule defined by a benzoic acid moiety, an imidazole[1,5-a]pyridine moiety with an attached phenyl ring, all non coplanar. The dihedral angles between the imidazole[1,5-a]pyridine moiety, the benzoic acid moiety, and the phenyl ring moiety are 27.3 and 29.9(9)°, respectively. The Npyridinyl–Cbenzoic acid, Cbenzoic acid–Nimidazole and the Nimidazole–Cphenyl are similar to those of reported analogues [14], [21], [22], [23], [24]. In the crystal, two molecules are centrosymmetrically connected through intermolecular O—H⋯Oi hydrogen bonds (symmetry code: (i) = 1 − x, 1 − y, 2 − z). The centrosymmetric dimers are further connected through Cgpyridine⋯Cgbenzoic acid interaction and the distance between them is 3.9676(8) Å (symmetry code: (i) = x, 1 − y, −1/2 − z).

Funding source: National Research Foundation of South Africa

Award Identifier / Grant number: 119342

Funding statement: We appreciate the University of KwaZulu-Natal and the National Research Foundation of South Africa (Grant number: 119342) for their financial assistance for Ms Adesola A. Adeleke.

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Received: 2019-04-25
Accepted: 2019-07-16
Published Online: 2019-09-27
Published in Print: 2019-11-26

©2019 Adeleke A. Adesola et al., published by De Gruyter, Berlin/Boston

This work is licensed under the Creative Commons Attribution 4.0 Public License.

Artikel in diesem Heft

  1. Frontmatter
  2. Crystal structure of [aqua[2,2′-(1,2-phenylene)bis(1H-imidazole-4-carboxylato-5-carboxy)-κ4N3,N3,O4,O4] zinc(II)] monohydrate, C16H10N4O9Zn⋅H2O
  3. Crystal structure of ethyl 3-(4-methoxyphenyl)-5-methylcarbamoyl-1H-pyrazole-4-carboxylate, C15H17N3O4
  4. 7-(4-Fluorobenzylidene)-3-(4-fluorophenyl)-N-phenyl-3,3a,4,5,6,7-hexahydro-2H-indazole-2-carbothioamide–dimethylformamide (2/1), C27H23F2N3S, 0.5(C3H7NO)
  5. Crystal structure of 4,4′-(hydrazonomethylene)diphenol dihydrate, C13H16N2O4
  6. Crystal structure of 4-methoxyphenyl-3-phenylpropiolate, C16H12O3
  7. Crystal Structure of tris(tetrakis{1-vinyl-1H-imidazole-κN}copper(II)) bis[tri-μ2-bromido-tetrabromido-bis(1-vinyl-1H-imidazole-κN)tetracopper(I)], C80H96N32Cu11Br14
  8. Crystal structure of (E)-2-(3,6-bis(diethylamino)-9H-xanthen-9-yl)-N′-(quinoxalin-2-ylmethylene)benzohydrazide, C37H36N6O2
  9. Crystal structure of 4-(1-phenylimidazo[1,5-a]pyridin-3-yl)benzoic acid (C20H14N2O2)
  10. Crystal structure of 3-fluoro-3-methyl-1-((2-nitrophenyl)sulfonyl)-5,5-diphenylpiperidine, C24H23FN2O4S
  11. Crystal structure of dimethyl 3,12-dibenzyl-6,10-diphenyl-3,12-diazapentacyclo [6.3.1.02.7.04.11.05.9]-dodecane-7,11-dicarboxylate — acetone (2/1), C40H38N2O2 ⋅ 0.5C3H6O
  12. Crystal structure of poly[(μ2-2-(1H-1,2,4-triazol-1-yl)benzoato-κ4O:O′:N:N′)silver(I)] monohydrate, C9H8AgO3N3
  13. Crystal structure of poly[(μ2-9H-carbazole-3,6-dicarboxylate-κ4O1,O2:O3,O4)(μ2-1,3-di(pyridin-4-yl)propane-κ2N:N)cadmium(II)]monohydrate, C27H23N3O5Cd
  14. The synthesis and crystal structure of bis(2-(benzo[d]thiazol-2-yl)-5-methylbenzen-1-ido-κ2C,N)-(N,N′-diethyldithiocarbamato-κ2S,S′)iridium(III), C33H30N3S4Ir
  15. The crystal structure of 5-amino-1-(2,6-dichloro-4-(trifluoromethyl)phenyl)-4-(trifluoromethylsulfonyl)-1H-pyrazole-3-carboxamide, C12H6N4Cl2F6O3S
  16. Synthesis and crystal structure of poly[(μ2-nitrato-κ4O,O′:O′,O′′)-nitrato-κO-(μ2-1,4-bis((1H-imidazol-1-yl)methyl)benzene-κ2N:N′)cadmium(II)], C14H14N6O6Cd
  17. Crystal structure of ethyl (Z)-(4-oxo-4-phenylbut-2-en-2-yl)glycinate, C14H17NO3
  18. Halogen bonds in the crystal structure of 5-bromo-3,4′-bipyridine – 1,4-diiodotetrafluorobenzene (2/1), C26H14Br2F4I2N4
  19. Crystal structure of bis(2,2′-bipyridine-κ2N,N′)-tetrakis(μ2-3-(phenylsulfonamido)propanoato-κ2O:O′)-bis(3-(phenylsulfonamido)propanoato-κ2O,O′)digadolinium(III) – 2,2′-bipyridine (1/1), C84H84Gd2N12O24S6
  20. Crystal structure of poly[aqua(μ2-2-amino-1,4-benzenedisulfonato-κ2O:O′)bis(μ2-pyrazin-κ2N:N′)silver(I)], C14H16Ag2N5O8S2
  21. The crystal structure of 1,6-di-tert-butyl-1,1,3,3,4,4,6,6-octamethyl-2,2,5,5-tetrakis (trimethylsilyl)hexasilane, C28H78Si10
  22. Crystal structure of discandium triruthenium tetrasilicide, Sc2Ru3Si4
  23. Crystal structure of poly[(μ2-4-amino-1,5-naphthalenedisulfonato-κ4O,N:O′, N′)bis(μ2-hexamethylenetetramino-κ2N;N′)silver(I)], {C22H30Ag2N9O6S2}n
  24. Crystal structure of diaqua[5,5′-dicarboxy-2,2′-(propane-1,3-diyl)bis(1H-imidazole-4-carboxylato-κ4O,O′,N,N′)]zinc(II) dihydrate, C13H18N4O12Zn
  25. The crystal structure of poly [(μ3-N1,N4-bis(pyridin-3-yl)cyclohexane-1,4-dicarboxamide-κ3-O:N:N′)-(p-toluenesulfonato-κ2O,O′)silver(I)], C25H27Ag1N4O5S
  26. The crystal structure of 1,2-bis(3-bromophenoxy) ethane, C14H12Br2O2
  27. The crystal structure of 4-(pyren-1-yl)butyl-3-nitrobenzoate, C27H21NO4
  28. Crystal structure of bis[(2-(4-chlorophenyl)-5-methyl-1,3-dioxane-5-carboxylato-κ1O) (5,5,7,12,12,14-hexamethyl-1,4,8,11-tetraazacyclotetradecane-κ4N,N′,N′′,N′′′)]nickel(II), C40H60Cl2N4NiO8
  29. The crystal structure of 1,5-dinitro-2,3,4-trichlorobenzene, C6H1Cl3N2O4
  30. The crystal structure of the solid solution of 3,5-dinitropyrazole and 4-chlorine-3,5-dinitropyrazole, C3H1.24Cl0.76N4O4
  31. The cocrystal structure of 4-nitropyrazole — acetic acid (1/1), C5H7N3O4
  32. The crystal structure of propan-2-one O-(2,4,6-trinitrophenyl) oxime, C9H8N4O7
  33. The crystal structure of ethyl 2-(3-(2-ethoxy-2-oxoethyl)benzo[d] thiazol-2(3H)-ylidene)acetate, C15H17NO4S
  34. Crystal structure of (acetic acid-κ1O)-bis(μ2-2-chlorobenzoato-κ2O:O′)-(2-chlorobenzoato-κ1O)-(μ2-hydroxy-κ2O:O)-bis(1,10-phenanthroline-κ2N,N′)dimanganese(II) — methanol (1/1), C48H37Cl3Mn2N4O10
  35. Crystal structure of 3-methyl-2-phenyl-1,8-naphthyridine, C15H12N2
  36. Crystal structure of chlorido-(5-acetyl-2-(5-methylpyridin-2-yl)benzen-1-ido-κ2C,N)-pyridine-κN-palladium(II), C19H17ClN2OPd
  37. Crystal structure of (4-methyl-benzoato-κ2O,O′)-(5,5,7,12,12,14-hexamethyl-1,4,8,11-tetraazacyclotetradecane-κ4N,N′,N′′,N′′′)nickel(II) perchlorate monohydrate, C24H45ClN4NiO7
  38. Crystal structure of (1,4,7,10,13,16-hexaoxacyclooctadecane-κ6O6) 1,2,3,4,5-pentamethyl-cyclopenta-2,4-dien-1-yl(potassium, rubidium) — ammonia (1/2), [K0.3Rb0.7(18-crown-6)]Cp*⋅2 NH3, C22H45K0.3N2O6Rb0.7
  39. Crystal structure of (3E,5E)-1-((4-fluorophenyl)sulfonyl)-3,5-bis(3-nitrobenzylidene)piperidin-4-one — dichloromethane (2/1), C51H38Cl2F2N6O14S2
  40. Crystal structure of (E)-N′-((1,6-dihydropyren-1-yl)methylene)isonicotinohydrazide — methanol (1/1), C24H19N3O2
  41. Crystal structure of poly[aqua(μ2-2-amino-1,4-benzenedisulfonato-κ3N,O:O′)-(μ4-hexamethylenetetramino-κ4N:N′:N′′:N′′′)disilver(I)] monohydrate, C12H21Ag2N5O8S2
  42. Crystal structure of bis(acridin-10-ium) 2,5-dihydroxyterephthalate — 2,5-dihydroxyterephthalic acid (1/1), C21H15NO6
  43. The crystal structure of 1,12-diazaperylene, C18H10N2
  44. Crystal structure of 1-(5-(4-chlorophenyl)-3-(2-fluorophenyl)-4,5-dihydro-1H-pyrazol-1-yl)ethan-1-one, C17H14N2OFCl
  45. Crystal structure of (4aR,6aR,6bR,10S,12aR)-10-acetoxy-1,2,3,4, 4a,5,6,6a,6b,7,8,8a,9,10,11,12,12a, 12b,13,14b-icosahydro-2,2,4a,6b,9,9,12a-heptamethylpicene-6a-carboxylic acid, C32H50O4
  46. The crystal structure of tetrachlorido-bis{1,3-bis(2,6-diisopropylphenyl)-1H-3λ4-imidazol-2-yl}-(μ2-pyrimidine-κ2N:N′)dipalladium(IV) — dichloromethane (1/2), C60H80Cl8N6Pd2
  47. The crystal structure of (E)-4-(7-methoxy-2-oxo-2H-chromen-8-yl)-2-methylbut-2-en-1-yl 4-nitrobenzoate, C22H19NO7
  48. Crystal structure of 3-methyl-N-(pyrimidin-5-ylmethyl)pyridin-2-amine, C11H12N4
  49. The crystal structure of 2,5-dichloroterephthalic acid dihydrate, C8H8Cl2O6
  50. The crystal structure of 2,4,6-tris[4-(1H-imidazol-1-yl)phenyl]-1,3,5-triazine — dimethylformamide (1/1), C33H28N10O
  51. Crystal structure of N-(adamantan-1-yl)-5-(dimethylamino)naphthalene-1-sulfonamide, C22H28N2O2S
  52. Crystal structure of poly[diaqua-(μ4-4-(3,5-dicarboxy-κ1O-phenoxy)phthalato-κ3O:O′:O′)cadmium(II)], C16H12CdO11
  53. Crystal structure of poly[diaqua-bis(μ2-3-((1H-imidazol-1-yl)methyl)benzoato-κ2N:O)manganese(II)], C22H22MnN4O6
  54. Crystal structure of 9-(3-phenoxyphenyl)-3,4,6,7,9,10-hexahydroacridine-1,8(2H,5H)-dione, C25H23NO3
  55. The crystal structure of poly[(μ3-2,4,6-tris[4-(1H-imidazol-1-yl)phenyl]-1,3,5-triazine-k3N:N′:N′′)-(nitrato-k2O,O)-(nitrato-k1O)zinc(II)] - N,N-dimethylacetamide (1/2), C38H39N13O8Zn
  56. Crystal structure of poly[(μ7-4-(3,5-dicarboxylatophenoxy)phthalato)-(1,10-phenanthroline-κ2N,N′)dizinc(II)], C28H14N2O9Zn2
  57. The crystal structure of methyl 2-(benzylamino)-5-(benzyloxy)benzoate, C22H21NO3
  58. Crystal structure of (1,4,8,11-tetraazacyclotetradecane)palladium(II) tetracyanoplatinate(II), C14H24N8PdPt
  59. Crystal structure of (pyridine-2-carboxylato-κ2N,O)-[2-(2-pyridyl)phenyl-κ2N,C1]palladium(II), C17H12N2O2Pd
  60. Crystal structure of (cyclohexane-1,4-diammonium) 4-[(4-carboxylatophenyl)disulfanyl]benzoate dimethylsulphoxide hydrate (1/1/1/1), [C6H16N2]2+[C14H8O4S2]2−⋅C2H6OS⋅H2O
  61. Crystal structure of the 2:1 co-crystal 2-[(2-carboxyphenyl)disulfanyl]benzoic acid – 3-bromobenzoic acid, 2(C14H10O4S2)⋅C7H5BrO2
  62. Crystal structure of chlorido-dimethyl-(phenylpiperazine-1-carbodithioato-κ2S,S′)tin(IV), C13H19ClN2S2Sn
  63. Crystal structure of (N-n-butyl, N-methyl-dithiocarbamato-κ2 S,S′)-chlorido-dimethyl-tin(IV), C8H18ClNS2Sn
  64. Crystal structure of (2,2′-bipyridyl)bis(4-bromobenzyl)dibromidotin(IV), C24H20Br4N2Sn
  65. Crystal structure of (2,2′-bipyridyl)bis(4-chlorobenzyl)dichloridotin(IV), C24H20Cl4N2Sn
  66. Crystal structure of N-methyl-N-phenyl(methylsulfanyl)carbothioamide, C9H11NS2
  67. Crystal structure of 4-phenylpiperazin-1-ium (4-phenylpiperazin-1-yl)carbothioylsulfanide, [C10H15N2][C11H13N2S2]
  68. Crystal structure of catena-{di-aqua-sodium [n-butyl(methyl)carbamothioyl]sulfanide}n, [C6H16NNaO2S2]n
  69. Crystal structure of (2-([1,1-bis(hydroxymethyl)-2-oxyethyl]iminomethyl)-5-(n-decyl)phenolato)-dimethyl-tin(IV), C23H39NO5Sn
  70. Crystal structure of 4-chloro-N′-[(1E)-(3-ethoxy-2-hydroxyphenyl)methylidene]benzohydrazide – a Z′ = 3 structure, C16H15ClN2O3
Heruntergeladen am 18.10.2025 von https://www.degruyterbrill.com/document/doi/10.1515/ncrs-2019-0300/html?srsltid=AfmBOor5wFUGSCeDW_uSVRqAPtiyb7UlLbBx16wPfSF74ZF0q2u6MPa_
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