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Acta Crystallogr Sect E Struct Rep Online. 2010 May 1; 66(Pt 5): o1229–o1230.
Published online 2010 April 30. doi:  10.1107/S1600536810015199
PMCID: PMC2979013

[3-(5-Nitro-2-fur­yl)-1-phenyl-1H-pyrazol-4-yl](phen­yl)methanone

Abstract

In the title pyrazole compound, C20H13N3O4, an intra­molecular C—H(...)O hydrogen bond generates a seven-membered ring, producing an S(7) ring motif. The essentially planar furan and pyrazole rings [maximum deviations of 0.002 (1) and 0.007 (1) Å, respectively] are coplanar with each other, forming a dihedral angle of 3.06 (10)°. The pyrazole ring forms dihedral angles of 8.51 (9) and 56.81 (9)° with the two benzene rings. The nitro group is coplanar with the attached furan ring, as indicated by the dihedral angle of 2.5 (3)°. In the crystal packing, inter­molecular C—H(...)O hydrogen bonds link adjacent mol­ecules into two-mol­ecule-wide chains along the a axis. The crystal packing is further stabilized by weak inter­molecular C—H(...)π and π–π inter­actions [centroid–centroid distance = 3.4441 (10) Å].

Related literature

For general background to and applications of the title compound, see: Kalluraya et al. (1994 [triangle]); Rai & Kalluraya (2006 [triangle]); Rai et al. (2008 [triangle]); Sridhar & Perumal (2003 [triangle]). For graph-set descriptions of hydrogen-bond ring motifs, see: Bernstein et al. (1995 [triangle]). For closely related structures, see: Goh et al. (2009a [triangle],b [triangle]). For the stability of the temperature controller used for the data collection, see: Cosier & Glazer (1986 [triangle]).

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Object name is e-66-o1229-scheme1.jpg

Experimental

Crystal data

  • C20H13N3O4
  • M r = 359.33
  • Monoclinic, An external file that holds a picture, illustration, etc.
Object name is e-66-o1229-efi1.jpg
  • a = 11.2946 (12) Å
  • b = 6.9755 (8) Å
  • c = 22.7064 (18) Å
  • β = 115.015 (4)°
  • V = 1621.1 (3) Å3
  • Z = 4
  • Mo Kα radiation
  • μ = 0.11 mm−1
  • T = 100 K
  • 0.24 × 0.15 × 0.07 mm

Data collection

  • Bruker APEXII DUO CCD area-detector diffractometer
  • Absorption correction: multi-scan (SADABS; Bruker, 2009 [triangle]) T min = 0.976, T max = 0.992
  • 17931 measured reflections
  • 4725 independent reflections
  • 2991 reflections with I > 2σ(I)
  • R int = 0.056

Refinement

  • R[F 2 > 2σ(F 2)] = 0.051
  • wR(F 2) = 0.129
  • S = 1.02
  • 4725 reflections
  • 296 parameters
  • All H-atom parameters refined
  • Δρmax = 0.37 e Å−3
  • Δρmin = −0.24 e Å−3

Data collection: APEX2 (Bruker, 2009 [triangle]); cell refinement: SAINT (Bruker, 2009 [triangle]); data reduction: SAINT; program(s) used to solve structure: SHELXTL (Sheldrick, 2008 [triangle]); program(s) used to refine structure: SHELXTL; molecular graphics: SHELXTL; software used to prepare material for publication: SHELXTL and PLATON (Spek, 2009 [triangle]).

Table 1
Hydrogen-bond geometry (Å, °)

Supplementary Material

Crystal structure: contains datablocks global, I. DOI: 10.1107/S1600536810015199/tk2653sup1.cif

Structure factors: contains datablocks I. DOI: 10.1107/S1600536810015199/tk2653Isup2.hkl

Additional supplementary materials: crystallographic information; 3D view; checkCIF report

Acknowledgments

The authors thank Universiti Sains Malaysia (USM) for the Research University Golden Goose grant (No. 1001/PFIZIK/811012). JHG also thanks USM for the award of a USM fellowship.

supplementary crystallographic information

Comment

Pyrazole derivatives are in general well-known nitrogen-containing heterocyclic compounds and various procedures have been developed for their synthesis (Rai & Kalluraya, 2006). The chemistry of pyrazole derivatives has been the subject of much interest due to their importance for various applications, and their widespread potential and proven biological and pharmacological activities (Rai et al., 2008). Steroids containing pyrazole moiety are of interest as psychopharmacological agents. Some alkyl- and aryl- substituted pyrazoles have sharply pronounced sedative action on the central nervous system. Certain alkyl pyrazoles show significant bacteriostatic, bacteriocidal, fungicidal, analgesic and anti-pyretic activities (Sridhar & Perumal, 2003). In continuation of our studies on 1,3-dipolar cyclo-addition reactions of sydnones with dipolarophiles carrying a nitrofuran or a nitrothiophene moiety (Kalluraya et al., 1994), we herein report the crystal structure of the title pyrazole compound.

In the title compound, Fig. 1, an intramolecular C11—H11A···O2 hydrogen bond (Table 1) generates a seven-membered ring, producing an S(7) ring motif (Bernstein et al., 1995). The furan (C10-C13/O1) and pyrazole (C8/C9/N2/N1/C14) rings are essentially planar, with maximum deviations of 0.002 (1) and -0.007 (1) Å, respectively, at atoms C12 and N2. These two rings are coplanar to one another, as indicated by the dihedral angle formed between them of 3.06 (10)°. The pyrazole ring is inclined at dihedral angles of 56.81 (9) and 8.51 (9)°, respectively, with the C1-C6 and C15-C20 benzene rings. The nitro group is coplanar with the attached furan ring, making a dihedral angle of 2.5 (3)°. The bond lengths and angles agree well with those closely related pyrazole structures (Goh et al., 2009a,b).

In the crystal packing, intermolecular C2—H2A···O4 and C14—H14A···O3 hydrogen bonds (Table 1) link adjacent molecules into two-molecule-wide chains along the a axis (Fig. 2). The crystal packing is further stabilized by weak intermolecular C18—H18A···Cg1 (Table 1) and Cg2···Cg2 interactions [Cg2···Cg2i = 3.4441 (10) Å where Cg1 and Cg2 are the centroids of the C15-C20 benzene and pyrazole rings, respectively].

Experimental

3-Phenylsydnone (0.01 mol) and 1-phenyl-3-(5-nitro-2-furyl)-2-propyn-1-one (0.01 mol) were dissolved in dry xylene (10 ml) and refluxed for 4 h. After completion of the reaction, the solvent was removed by distillation under reduced pressure. The crude product obtained was purified by recrystallization from a mixture of ethanol and DMF. The solid obtained was collected by filtration, washed with ethanol and dried. Single crystals suitable for X-ray analysis were obtained from a 1:2 mixture of ethanol and DMF by slow evaporation.

Refinement

All the H atoms were located from difference Fourier map [range of C—H = 0.933 (18)–1.00 (3) Å] and allowed to refine freely.

Figures

Fig. 1.
The molecular structure of the title compound, showing 50% probability displacement ellipsoids for non-H atoms and the atom-numbering scheme. An intramolecular hydrogen bond is shown as dashed line.
Fig. 2.
The crystal packing of the title compound, viewed along the c axis, showing two-molecule-wide chains along the a axis. Hydrogen atoms not involved in intermolecular interactions (dashed lines) have been omitted for clarity.

Crystal data

C20H13N3O4F(000) = 744
Mr = 359.33Dx = 1.472 Mg m3
Monoclinic, P21/cMo Kα radiation, λ = 0.71073 Å
Hall symbol: -P 2ybcCell parameters from 2349 reflections
a = 11.2946 (12) Åθ = 3.5–26.3°
b = 6.9755 (8) ŵ = 0.11 mm1
c = 22.7064 (18) ÅT = 100 K
β = 115.015 (4)°Block, brown
V = 1621.1 (3) Å30.24 × 0.15 × 0.07 mm
Z = 4

Data collection

Bruker APEXII DUO CCD area-detector diffractometer4725 independent reflections
Radiation source: fine-focus sealed tube2991 reflections with I > 2σ(I)
graphiteRint = 0.056
[var phi] and ω scansθmax = 30.0°, θmin = 2.0°
Absorption correction: multi-scan (SADABS; Bruker, 2009)h = −15→15
Tmin = 0.976, Tmax = 0.992k = −9→9
17931 measured reflectionsl = −31→31

Refinement

Refinement on F2Primary atom site location: structure-invariant direct methods
Least-squares matrix: fullSecondary atom site location: difference Fourier map
R[F2 > 2σ(F2)] = 0.051Hydrogen site location: inferred from neighbouring sites
wR(F2) = 0.129All H-atom parameters refined
S = 1.02w = 1/[σ2(Fo2) + (0.0464P)2 + 0.6127P] where P = (Fo2 + 2Fc2)/3
4725 reflections(Δ/σ)max = 0.001
296 parametersΔρmax = 0.37 e Å3
0 restraintsΔρmin = −0.24 e Å3

Special details

Experimental. The crystal was placed in the cold stream of an Oxford Cryosystems Cobra open-flow nitrogen cryostat (Cosier & Glazer, 1986) operating at 100.0 (1)K.
Geometry. All esds (except the esd in the dihedral angle between two l.s. planes) are estimated using the full covariance matrix. The cell esds are taken into account individually in the estimation of esds in distances, angles and torsion angles; correlations between esds in cell parameters are only used when they are defined by crystal symmetry. An approximate (isotropic) treatment of cell esds is used for estimating esds involving l.s. planes.
Refinement. Refinement of F2 against ALL reflections. The weighted R-factor wR and goodness of fit S are based on F2, conventional R-factors R are based on F, with F set to zero for negative F2. The threshold expression of F2 > 2sigma(F2) is used only for calculating R-factors(gt) etc. and is not relevant to the choice of reflections for refinement. R-factors based on F2 are statistically about twice as large as those based on F, and R- factors based on ALL data will be even larger.

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

xyzUiso*/Ueq
O11.26743 (11)0.74226 (19)1.00753 (6)0.0293 (3)
O20.86733 (12)0.95863 (19)0.85528 (6)0.0297 (3)
O31.55123 (13)0.7939 (2)0.98584 (7)0.0411 (4)
O41.52027 (15)0.6888 (3)1.06817 (9)0.0764 (7)
N10.96246 (13)0.6915 (2)1.05307 (6)0.0206 (3)
N21.07625 (13)0.6992 (2)1.04603 (7)0.0215 (3)
N31.48065 (16)0.7520 (3)1.01308 (9)0.0382 (4)
C10.62475 (17)0.6603 (3)0.86532 (8)0.0286 (4)
C20.49042 (19)0.6327 (4)0.83427 (9)0.0359 (5)
C30.40950 (19)0.7816 (4)0.80076 (9)0.0410 (5)
C40.4611 (2)0.9603 (4)0.79806 (10)0.0434 (6)
C50.5954 (2)0.9876 (3)0.82757 (10)0.0362 (5)
C60.67801 (17)0.8374 (3)0.86116 (8)0.0271 (4)
C70.82209 (16)0.8692 (3)0.88763 (8)0.0238 (4)
C80.90414 (16)0.7934 (2)0.95280 (8)0.0213 (3)
C91.04207 (16)0.7631 (2)0.98559 (8)0.0208 (3)
C101.14371 (16)0.7910 (2)0.96325 (8)0.0226 (4)
C111.14713 (18)0.8593 (3)0.90780 (9)0.0278 (4)
C121.27856 (18)0.8549 (3)0.91693 (9)0.0294 (4)
C131.34517 (17)0.7833 (3)0.97709 (9)0.0282 (4)
C140.85851 (16)0.7448 (2)0.99826 (8)0.0216 (3)
C150.96295 (16)0.6275 (2)1.11294 (8)0.0209 (3)
C161.07647 (16)0.5522 (3)1.16079 (8)0.0233 (4)
C171.07388 (18)0.4800 (3)1.21724 (9)0.0281 (4)
C180.96039 (18)0.4857 (3)1.22655 (9)0.0282 (4)
C190.84901 (18)0.5655 (3)1.17896 (9)0.0273 (4)
C200.84850 (17)0.6368 (3)1.12181 (8)0.0238 (4)
H1A0.6830 (18)0.558 (3)0.8899 (9)0.024 (5)*
H2A0.458 (2)0.505 (3)0.8376 (11)0.047 (7)*
H3A0.315 (2)0.757 (3)0.7776 (11)0.047 (6)*
H4A0.406 (2)1.071 (4)0.7748 (12)0.057 (7)*
H5A0.635 (2)1.110 (4)0.8263 (11)0.048 (7)*
H11A1.071 (2)0.900 (4)0.8687 (12)0.061 (7)*
H12A1.319 (2)0.895 (3)0.8890 (10)0.041 (6)*
H14A0.7722 (19)0.741 (3)0.9963 (9)0.028 (5)*
H16A1.1530 (18)0.549 (3)1.1519 (9)0.025 (5)*
H17A1.150 (2)0.425 (3)1.2493 (10)0.039 (6)*
H18A0.9566 (19)0.433 (3)1.2648 (10)0.034 (5)*
H19A0.7709 (17)0.575 (3)1.1840 (8)0.022 (5)*
H20A0.7707 (18)0.686 (3)1.0903 (9)0.022 (5)*

Atomic displacement parameters (Å2)

U11U22U33U12U13U23
O10.0199 (6)0.0361 (7)0.0344 (7)0.0003 (5)0.0140 (5)0.0054 (6)
O20.0304 (7)0.0320 (7)0.0293 (6)−0.0019 (6)0.0152 (5)0.0027 (6)
O30.0260 (7)0.0555 (10)0.0492 (8)−0.0051 (7)0.0230 (6)−0.0074 (7)
O40.0283 (8)0.1271 (18)0.0727 (12)0.0171 (10)0.0201 (8)0.0604 (13)
N10.0185 (7)0.0227 (7)0.0226 (7)−0.0021 (6)0.0106 (5)−0.0021 (6)
N20.0184 (6)0.0232 (7)0.0252 (7)−0.0015 (6)0.0115 (5)−0.0030 (6)
N30.0244 (8)0.0450 (11)0.0475 (10)0.0010 (7)0.0176 (7)0.0061 (9)
C10.0235 (9)0.0393 (11)0.0230 (8)0.0008 (8)0.0098 (7)0.0008 (8)
C20.0274 (10)0.0548 (14)0.0264 (9)−0.0065 (10)0.0125 (8)−0.0022 (10)
C30.0222 (9)0.0738 (17)0.0254 (9)0.0009 (10)0.0086 (8)0.0023 (10)
C40.0268 (10)0.0670 (16)0.0350 (10)0.0134 (11)0.0116 (8)0.0175 (11)
C50.0324 (10)0.0443 (13)0.0337 (10)0.0069 (10)0.0157 (8)0.0113 (9)
C60.0240 (8)0.0385 (11)0.0205 (8)0.0027 (8)0.0110 (7)0.0013 (8)
C70.0255 (8)0.0242 (9)0.0232 (8)0.0008 (7)0.0117 (7)−0.0024 (7)
C80.0214 (8)0.0199 (8)0.0242 (8)−0.0021 (7)0.0112 (6)−0.0029 (7)
C90.0216 (8)0.0172 (8)0.0246 (8)−0.0027 (7)0.0108 (6)−0.0050 (7)
C100.0189 (8)0.0216 (8)0.0271 (8)−0.0021 (7)0.0095 (7)−0.0040 (7)
C110.0258 (9)0.0337 (10)0.0276 (9)−0.0023 (8)0.0148 (7)−0.0026 (8)
C120.0276 (9)0.0352 (11)0.0303 (9)−0.0065 (8)0.0171 (7)−0.0070 (8)
C130.0193 (8)0.0301 (10)0.0387 (10)−0.0020 (7)0.0157 (7)−0.0026 (8)
C140.0197 (8)0.0214 (8)0.0239 (8)0.0003 (7)0.0095 (6)−0.0030 (7)
C150.0225 (8)0.0196 (8)0.0221 (7)−0.0030 (7)0.0108 (6)−0.0027 (7)
C160.0207 (8)0.0245 (9)0.0257 (8)−0.0017 (7)0.0106 (7)−0.0032 (7)
C170.0270 (9)0.0287 (10)0.0251 (8)−0.0012 (8)0.0077 (7)0.0007 (8)
C180.0327 (10)0.0291 (10)0.0240 (8)−0.0073 (8)0.0131 (7)−0.0024 (8)
C190.0254 (9)0.0305 (10)0.0315 (9)−0.0041 (8)0.0173 (7)−0.0042 (8)
C200.0204 (8)0.0248 (9)0.0262 (8)−0.0013 (7)0.0099 (7)−0.0020 (7)

Geometric parameters (Å, °)

O1—C131.358 (2)C7—C81.472 (2)
O1—C101.375 (2)C8—C141.377 (2)
O2—C71.228 (2)C8—C91.430 (2)
O3—N31.233 (2)C9—C101.451 (2)
O4—N31.219 (2)C10—C111.362 (2)
N1—C141.353 (2)C11—C121.410 (3)
N1—N21.3616 (18)C11—H11A0.98 (2)
N1—C151.429 (2)C12—C131.346 (3)
N2—C91.335 (2)C12—H12A0.96 (2)
N3—C131.414 (2)C14—H14A0.96 (2)
C1—C21.390 (3)C15—C161.387 (2)
C1—C61.395 (3)C15—C201.391 (2)
C1—H1A0.97 (2)C16—C171.389 (2)
C2—C31.380 (3)C16—H16A0.968 (18)
C2—H2A0.98 (2)C17—C181.385 (3)
C3—C41.388 (3)C17—H17A0.94 (2)
C3—H3A0.99 (2)C18—C191.382 (3)
C4—C51.389 (3)C18—H18A0.96 (2)
C4—H4A1.00 (3)C19—C201.387 (2)
C5—C61.396 (3)C19—H19A0.939 (18)
C5—H5A0.97 (2)C20—H20A0.933 (18)
C6—C71.494 (2)
C13—O1—C10104.57 (13)C8—C9—C10130.30 (15)
C14—N1—N2112.10 (13)C11—C10—O1110.18 (14)
C14—N1—C15127.88 (14)C11—C10—C9134.91 (16)
N2—N1—C15120.00 (13)O1—C10—C9114.89 (14)
C9—N2—N1104.88 (13)C10—C11—C12107.23 (16)
O4—N3—O3124.47 (17)C10—C11—H11A125.5 (14)
O4—N3—C13119.14 (17)C12—C11—H11A127.2 (14)
O3—N3—C13116.38 (17)C13—C12—C11105.03 (16)
C2—C1—C6119.85 (19)C13—C12—H12A124.0 (13)
C2—C1—H1A121.2 (11)C11—C12—H12A131.0 (13)
C6—C1—H1A118.9 (11)C12—C13—O1112.99 (15)
C3—C2—C1120.1 (2)C12—C13—N3130.37 (17)
C3—C2—H2A123.0 (14)O1—C13—N3116.60 (16)
C1—C2—H2A116.9 (13)N1—C14—C8107.64 (15)
C2—C3—C4120.51 (19)N1—C14—H14A120.4 (11)
C2—C3—H3A118.6 (14)C8—C14—H14A132.0 (11)
C4—C3—H3A120.8 (14)C16—C15—C20120.80 (16)
C3—C4—C5119.7 (2)C16—C15—N1119.63 (14)
C3—C4—H4A122.8 (14)C20—C15—N1119.55 (15)
C5—C4—H4A117.5 (14)C15—C16—C17119.16 (16)
C4—C5—C6120.2 (2)C15—C16—H16A117.3 (11)
C4—C5—H5A122.1 (13)C17—C16—H16A123.6 (11)
C6—C5—H5A117.7 (14)C18—C17—C16120.84 (17)
C1—C6—C5119.62 (17)C18—C17—H17A119.5 (13)
C1—C6—C7122.14 (17)C16—C17—H17A119.6 (13)
C5—C6—C7118.10 (18)C19—C18—C17119.16 (17)
O2—C7—C8122.64 (16)C19—C18—H18A119.1 (12)
O2—C7—C6119.53 (15)C17—C18—H18A121.7 (12)
C8—C7—C6117.83 (15)C18—C19—C20121.20 (17)
C14—C8—C9104.11 (14)C18—C19—H19A121.7 (11)
C14—C8—C7124.45 (15)C20—C19—H19A117.1 (11)
C9—C8—C7131.35 (15)C19—C20—C15118.82 (16)
N2—C9—C8111.25 (14)C19—C20—H20A118.7 (11)
N2—C9—C10118.45 (15)C15—C20—H20A122.5 (11)
C14—N1—N2—C91.32 (18)C8—C9—C10—O1−178.34 (16)
C15—N1—N2—C9179.83 (15)O1—C10—C11—C12−0.2 (2)
C6—C1—C2—C3−1.6 (3)C9—C10—C11—C12178.25 (19)
C1—C2—C3—C4−0.4 (3)C10—C11—C12—C130.3 (2)
C2—C3—C4—C52.1 (3)C11—C12—C13—O1−0.3 (2)
C3—C4—C5—C6−1.6 (3)C11—C12—C13—N3−177.8 (2)
C2—C1—C6—C52.1 (3)C10—O1—C13—C120.2 (2)
C2—C1—C6—C7−173.56 (16)C10—O1—C13—N3178.07 (16)
C4—C5—C6—C1−0.5 (3)O4—N3—C13—C12178.3 (2)
C4—C5—C6—C7175.34 (18)O3—N3—C13—C12−0.8 (3)
C1—C6—C7—O2135.87 (18)O4—N3—C13—O10.9 (3)
C5—C6—C7—O2−39.8 (2)O3—N3—C13—O1−178.27 (17)
C1—C6—C7—C8−45.1 (2)N2—N1—C14—C8−1.0 (2)
C5—C6—C7—C8139.15 (17)C15—N1—C14—C8−179.35 (16)
O2—C7—C8—C14159.65 (17)C9—C8—C14—N10.24 (19)
C6—C7—C8—C14−19.3 (3)C7—C8—C14—N1−176.58 (16)
O2—C7—C8—C9−16.2 (3)C14—N1—C15—C16170.60 (17)
C6—C7—C8—C9164.80 (17)N2—N1—C15—C16−7.6 (2)
N1—N2—C9—C8−1.14 (18)C14—N1—C15—C20−7.7 (3)
N1—N2—C9—C10178.84 (14)N2—N1—C15—C20174.08 (15)
C14—C8—C9—N20.58 (19)C20—C15—C16—C172.0 (3)
C7—C8—C9—N2177.09 (17)N1—C15—C16—C17−176.24 (16)
C14—C8—C9—C10−179.40 (17)C15—C16—C17—C18−1.1 (3)
C7—C8—C9—C10−2.9 (3)C16—C17—C18—C19−0.4 (3)
C13—O1—C10—C110.0 (2)C17—C18—C19—C201.1 (3)
C13—O1—C10—C9−178.77 (15)C18—C19—C20—C15−0.2 (3)
N2—C9—C10—C11−176.7 (2)C16—C15—C20—C19−1.3 (3)
C8—C9—C10—C113.2 (3)N1—C15—C20—C19176.91 (16)
N2—C9—C10—O11.7 (2)

Hydrogen-bond geometry (Å, °)

Cg1 is the centroid of the C15–C20 benzene ring.
D—H···AD—HH···AD···AD—H···A
C2—H2A···O4i0.98 (2)2.45 (2)3.190 (3)131.8 (17)
C11—H11A···O20.98 (3)2.23 (3)2.950 (3)130 (2)
C14—H14A···O3ii0.96 (2)2.43 (2)3.379 (3)169.3 (17)
C18—H18A···Cg1iii0.96 (2)2.96 (2)3.671 (2)132.0 (16)

Symmetry codes: (i) −x+2, −y+1, −z+2; (ii) x−1, y, z; (iii) −x+2, y−1/2, −z+5/2.

Footnotes

Supplementary data and figures for this paper are available from the IUCr electronic archives (Reference: TK2653).

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