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Acta Crystallogr Sect E Struct Rep Online. 2009 April 1; 65(Pt 4): o675.
Published online 2009 March 6. doi:  10.1107/S1600536809007144
PMCID: PMC2968975

1-(4-Fluoro­phen­yl)-5-(4-methoxy­phen­yl)pyrazolidin-3-one

Abstract

In the mol­ecule of the title compound, C16H15FN2O2, the benzene rings are oriented at a dihedral angle of 88.61 (3)°. The five-membered ring adopts an envelope conformation. Intra­molecular C—H(...)N hydrogen bonds result in the formation of two planar five-membered rings. In the crystal structure, inter­molecular N—H(...)O and C—H(...)F hydrogen bonds link the mol­ecules, forming R 2 2(8) and R 2 2(18) ring motifs. Weak C—H(...)π inter­actions may further stabilize the structure.

Related literature

For applications of pyrazolidin-3-one, see: Prakash et al. (2008 [triangle]); Nonaka (2003 [triangle]); Mabuchi & Ohtsuka (1999 [triangle]). For a related structure, see: Liu et al. (2008 [triangle]). For bond-length data, see: Allen et al. (1987 [triangle]). For ring motifs, see: Bernstein et al. (1995 [triangle]).

An external file that holds a picture, illustration, etc.
Object name is e-65-0o675-scheme1.jpg

Experimental

Crystal data

  • C16H15FN2O2
  • M r = 286.30
  • Monoclinic, An external file that holds a picture, illustration, etc.
Object name is e-65-0o675-efi1.jpg
  • a = 11.455 (2) Å
  • b = 7.1590 (14) Å
  • c = 18.136 (4) Å
  • β = 101.05 (3)°
  • V = 1459.7 (5) Å3
  • Z = 4
  • Mo Kα radiation
  • μ = 0.10 mm−1
  • T = 294 K
  • 0.4 × 0.4 × 0.3 mm

Data collection

  • Enraf–Nonius CAD-4 diffractometer
  • Absorption correction: ψ scan (North et al., 1968 [triangle]) T min = 0.969, T max = 0.991
  • 2991 measured reflections
  • 2844 independent reflections
  • 1869 reflections with I > 2σ(I)
  • R int = 0.023
  • 3 standard reflections frequency: 120 min intensity decay: none

Refinement

  • R[F 2 > 2σ(F 2)] = 0.049
  • wR(F 2) = 0.164
  • S = 1.01
  • 2844 reflections
  • 191 parameters
  • H-atom parameters constrained
  • Δρmax = 0.18 e Å−3
  • Δρmin = −0.18 e Å−3

Data collection: CAD-4 Software (Enraf–Nonius, 1985 [triangle]); cell refinement: CAD-4 Software; data reduction: XCAD4 (Harms & Wocadlo, 1995 [triangle]); program(s) used to solve structure: SHELXS97 (Sheldrick, 2008 [triangle]); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008 [triangle]); molecular graphics: ORTEP-3 for Windows (Farrugia, 1997 [triangle]) and PLATON (Spek, 2009 [triangle]); software used to prepare material for publication: SHELXTL (Sheldrick, 2008 [triangle]).

Table 1
Hydrogen-bond geometry (Å, °)

Supplementary Material

Crystal structure: contains datablocks I, global. DOI: 10.1107/S1600536809007144/hk2631sup1.cif

Structure factors: contains datablocks I. DOI: 10.1107/S1600536809007144/hk2631Isup2.hkl

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

Acknowledgments

The authors thank the Center of Testing and Analysis, Nanjing University, for support.

supplementary crystallographic information

Comment

Nowadays, pyrazolidin-3-one and its derivatives used as pesticide have been developed most quickly, such as antiseptic (Prakash et al., 2008), insecticide (Nonaka, 2003) and herbicide (Mabuchi & Ohtsuka, 1999). We report herein the crystal structure of the title compound.

In the molecule of the title compound (Fig. 1), the bond lengths (Allen et al., 1987) and angles are within normal ranges. Rings A (C1-C6) and C (C10-C15) are, of course, planar, and they are oriented at a dihedral angle of 88.61 (3)°. The five-membered ring B (N1/N2/C7-C9) adopts envelope conformation with C7 atom displaced by 0.363 (3) Å from the plane of the other ring atoms. The intramolecular C-H···N hydrogen bonds (Table 1) results in the formations of two planar five-membered rings D (N1/N2/C4/C5/H5A) and E (N1/C7/C10/C11/H11A), in which they are oriented with respect to the adjacent rings at dihedral angles of A/D = 4.87 (3) and C/E = 0.86 (3)°. So, rings C and E are coplanar, while A and D are nearly coplanar.

In the crystal structure, intermolecular N-H···O and C-H···F hydrogen bonds (Table 2) link the molecules (Fig. 2) by forming the R22(8) and R22(18) ring motifs (Bernstein et al., 1995), in which they may be effective in the stabilization of the structure. The weak C—H···π interactions (Table 1) may further stabilize the structure.

Experimental

The title compound was prepared according to the literature method (Liu et al., 2008). Crystals suitable for X-ray analysis were obtained by dissolving the title compound (1.5 g) in ethyl acetate (25 ml) and evaporating the solvent slowly at room temperature for about 10 d.

Refinement

H atoms were positioned geometrically, with N-H = 0.86 Å (for NH) and C-H = 0.93, 0.98, 0.97 and 0.96 Å for aromatic, methine, methylene and methyl H, respectively, and constrained to ride on their parent atoms, with Uiso(H) = xUeq(C,N), where x = 1.5 for methyl H and x = 1.2 for all other H atoms.

Figures

Fig. 1.
The molecular structure of the title molecule, with the atom-numbering scheme. Displacement ellipsoids are drawn at the 50% probability level. Hydrogen bonds are shown as dashed lines.
Fig. 2.
A partial packing diagram of the title compound. Hydrogen bonds are shown as dashed lines.

Crystal data

C16H15FN2O2F(000) = 600
Mr = 286.30Dx = 1.303 Mg m3
Monoclinic, P21/cMo Kα radiation, λ = 0.71073 Å
Hall symbol: -P 2ybcCell parameters from 25 reflections
a = 11.455 (2) Åθ = 10–13°
b = 7.1590 (14) ŵ = 0.10 mm1
c = 18.136 (4) ÅT = 294 K
β = 101.05 (3)°Needle, colorless
V = 1459.7 (5) Å30.4 × 0.4 × 0.3 mm
Z = 4

Data collection

Enraf–Nonius CAD-4 diffractometer1869 reflections with I > 2σ(I)
Radiation source: fine-focus sealed tubeRint = 0.023
graphiteθmax = 26.0°, θmin = 1.8°
ω/2θ scansh = 0→13
Absorption correction: ψ scan (North et al., 1968)k = 0→8
Tmin = 0.969, Tmax = 0.991l = −21→21
2991 measured reflections3 standard reflections every 120 min
2844 independent reflections intensity decay: none

Refinement

Refinement on F2Secondary atom site location: difference Fourier map
Least-squares matrix: fullHydrogen site location: inferred from neighbouring sites
R[F2 > 2σ(F2)] = 0.049H-atom parameters constrained
wR(F2) = 0.164w = 1/[σ2(Fo2) + (0.1P)2] where P = (Fo2 + 2Fc2)/3
S = 1.01(Δ/σ)max = 0.001
2844 reflectionsΔρmax = 0.18 e Å3
191 parametersΔρmin = −0.18 e Å3
0 restraintsExtinction correction: SHELXL97 (Sheldrick, 2008), Fc*=kFc[1+0.001xFc2λ3/sin(2θ)]-1/4
Primary atom site location: structure-invariant direct methodsExtinction coefficient: 0.038 (5)

Special details

Geometry. All e.s.d.'s (except the e.s.d. in the dihedral angle between two l.s. planes) are estimated using the full covariance matrix. The cell e.s.d.'s are taken into account individually in the estimation of e.s.d.'s in distances, angles and torsion angles; correlations between e.s.d.'s in cell parameters are only used when they are defined by crystal symmetry. An approximate (isotropic) treatment of cell e.s.d.'s is used for estimating e.s.d.'s 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 > σ(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
O10.48784 (13)0.2552 (2)0.03274 (8)0.0523 (4)
O20.38835 (15)−0.1685 (2)−0.36578 (8)0.0597 (5)
N10.26509 (14)0.3997 (2)−0.11625 (9)0.0405 (4)
N20.37005 (14)0.4183 (2)−0.06107 (10)0.0468 (5)
H2A0.41160.5192−0.05560.056*
F−0.11183 (16)0.8402 (3)−0.07221 (14)0.1260 (8)
C1−0.0185 (2)0.7276 (4)−0.08105 (18)0.0724 (8)
C2−0.0298 (2)0.6229 (4)−0.14437 (16)0.0694 (8)
H2B−0.09960.6247−0.18030.083*
C30.0654 (2)0.5135 (3)−0.15406 (13)0.0541 (6)
H3A0.06030.4424−0.19750.065*
C40.16815 (17)0.5086 (2)−0.09998 (11)0.0393 (5)
C50.1755 (2)0.6150 (3)−0.03597 (12)0.0525 (6)
H5A0.24430.61220.00090.063*
C60.0806 (2)0.7261 (4)−0.02653 (17)0.0723 (8)
H6A0.08480.79850.01650.087*
C70.24222 (18)0.1930 (3)−0.12010 (11)0.0393 (5)
H7A0.15690.1709−0.12370.047*
C80.30920 (19)0.1193 (3)−0.04418 (10)0.0436 (5)
H8A0.25590.1040−0.00900.052*
H8B0.34720.0006−0.05010.052*
C90.39987 (18)0.2682 (3)−0.01826 (11)0.0416 (5)
C100.28206 (17)0.1019 (3)−0.18638 (10)0.0391 (5)
C110.33591 (18)0.1959 (3)−0.23771 (11)0.0443 (5)
H11A0.34900.3238−0.23230.053*
C120.3703 (2)0.1032 (3)−0.29659 (11)0.0486 (5)
H12A0.40690.1687−0.33020.058*
C130.35087 (19)−0.0874 (3)−0.30603 (10)0.0455 (5)
C140.2963 (2)−0.1830 (3)−0.25569 (13)0.0592 (7)
H14A0.2825−0.3107−0.26130.071*
C150.2625 (2)−0.0876 (3)−0.19703 (12)0.0560 (6)
H15A0.2254−0.1529−0.16360.067*
C160.3801 (2)−0.3669 (4)−0.37188 (14)0.0655 (7)
H16A0.4084−0.4069−0.41580.098*
H16B0.2987−0.4044−0.37580.098*
H16C0.4276−0.4230−0.32810.098*

Atomic displacement parameters (Å2)

U11U22U33U12U13U23
O10.0529 (9)0.0421 (9)0.0565 (9)0.0060 (7)−0.0034 (7)0.0017 (7)
O20.0751 (11)0.0584 (11)0.0486 (9)−0.0018 (8)0.0194 (8)−0.0099 (7)
N10.0387 (9)0.0295 (9)0.0521 (10)0.0020 (7)0.0053 (7)−0.0001 (7)
N20.0361 (9)0.0319 (9)0.0678 (11)−0.0014 (7)−0.0017 (8)0.0030 (8)
F0.0732 (12)0.1078 (16)0.200 (2)0.0392 (11)0.0325 (13)−0.0413 (15)
C10.0470 (14)0.0575 (16)0.114 (2)0.0138 (12)0.0199 (15)−0.0134 (15)
C20.0464 (14)0.0637 (17)0.0911 (19)0.0095 (12)−0.0040 (13)−0.0011 (15)
C30.0482 (13)0.0478 (13)0.0622 (14)0.0055 (10)−0.0001 (10)−0.0054 (11)
C40.0425 (11)0.0267 (10)0.0486 (11)0.0025 (8)0.0082 (9)0.0043 (8)
C50.0536 (13)0.0472 (13)0.0551 (13)0.0021 (10)0.0069 (10)−0.0084 (10)
C60.0711 (18)0.0606 (17)0.0880 (19)0.0055 (13)0.0226 (15)−0.0289 (14)
C70.0399 (10)0.0281 (10)0.0501 (11)−0.0005 (8)0.0090 (9)0.0009 (8)
C80.0552 (13)0.0344 (11)0.0425 (11)−0.0020 (9)0.0131 (9)0.0010 (9)
C90.0455 (11)0.0328 (11)0.0476 (11)0.0064 (9)0.0122 (9)−0.0014 (9)
C100.0441 (11)0.0322 (10)0.0395 (10)0.0001 (8)0.0044 (8)0.0022 (8)
C110.0478 (12)0.0341 (10)0.0495 (12)−0.0044 (9)0.0060 (9)0.0027 (9)
C120.0550 (13)0.0484 (13)0.0434 (11)−0.0081 (10)0.0120 (10)0.0032 (9)
C130.0501 (12)0.0479 (13)0.0365 (10)0.0015 (10)0.0032 (9)−0.0026 (9)
C140.0896 (19)0.0362 (12)0.0557 (13)−0.0053 (12)0.0238 (13)−0.0048 (10)
C150.0857 (17)0.0367 (12)0.0518 (12)−0.0080 (11)0.0287 (12)0.0011 (9)
C160.0717 (16)0.0648 (16)0.0614 (14)−0.0109 (13)0.0162 (12)−0.0278 (13)

Geometric parameters (Å, °)

O1—C91.234 (2)C7—C81.536 (3)
O2—C131.369 (2)C7—C101.513 (3)
O2—C161.427 (3)C7—H7A0.9800
N1—N21.415 (2)C8—H8A0.9700
N1—C41.433 (2)C8—H8B0.9700
N1—C71.502 (2)C9—C81.500 (3)
N2—C91.331 (2)C10—C151.382 (3)
N2—H2A0.8600C11—C101.386 (3)
F—C11.372 (3)C11—C121.378 (3)
C2—C11.357 (4)C11—H11A0.9300
C2—H2B0.9300C12—C131.388 (3)
C3—C21.380 (3)C12—H12A0.9300
C3—H3A0.9300C13—C141.382 (3)
C4—C31.381 (3)C14—C151.381 (3)
C4—C51.378 (3)C14—H14A0.9300
C5—C61.384 (3)C15—H15A0.9300
C5—H5A0.9300C16—H16A0.9600
C6—C11.356 (4)C16—H16B0.9600
C6—H6A0.9300C16—H16C0.9600
C13—O2—C16117.22 (18)C7—C8—H8B111.1
N2—N1—C4112.97 (15)C9—C8—C7103.53 (16)
N2—N1—C7104.02 (14)C9—C8—H8A111.1
C4—N1—C7114.23 (15)C9—C8—H8B111.1
N1—N2—H2A122.4H8A—C8—H8B109.0
C9—N2—N1115.13 (16)O1—C9—N2125.42 (19)
C9—N2—H2A122.4O1—C9—C8126.75 (18)
C2—C1—F118.3 (3)N2—C9—C8107.82 (17)
C6—C1—F118.8 (3)C15—C10—C11117.64 (19)
C6—C1—C2122.9 (2)C15—C10—C7117.95 (18)
C1—C2—C3118.2 (2)C11—C10—C7124.40 (18)
C1—C2—H2B120.9C10—C11—H11A119.4
C3—C2—H2B120.9C12—C11—C10121.1 (2)
C2—C3—C4120.7 (2)C12—C11—H11A119.4
C2—C3—H3A119.7C11—C12—C13120.42 (19)
C4—C3—H3A119.7C11—C12—H12A119.8
C3—C4—N1117.15 (18)C13—C12—H12A119.8
C5—C4—N1123.33 (18)O2—C13—C14124.3 (2)
C5—C4—C3119.40 (19)O2—C13—C12116.56 (19)
C4—C5—C6120.0 (2)C14—C13—C12119.17 (19)
C4—C5—H5A120.0C15—C14—C13119.6 (2)
C6—C5—H5A120.0C15—C14—H14A120.2
C1—C6—C5118.9 (2)C13—C14—H14A120.2
C1—C6—H6A120.6C10—C15—H15A119.0
C5—C6—H6A120.6C14—C15—C10122.1 (2)
N1—C7—C8104.13 (15)C14—C15—H15A119.0
N1—C7—C10112.66 (16)O2—C16—H16A109.5
N1—C7—H7A109.0O2—C16—H16B109.5
C8—C7—H7A109.0O2—C16—H16C109.5
C10—C7—C8112.90 (16)H16A—C16—H16B109.5
C10—C7—H7A109.0H16A—C16—H16C109.5
C7—C8—H8A111.1H16B—C16—H16C109.5
C4—N1—N2—C9109.31 (19)C4—C5—C6—C10.1 (4)
C7—N1—N2—C9−15.1 (2)C5—C6—C1—C20.8 (5)
N2—N1—C4—C3174.02 (17)C5—C6—C1—F−178.9 (3)
N2—N1—C4—C5−2.1 (3)N1—C7—C8—C9−21.70 (19)
C7—N1—C4—C3−67.3 (2)C10—C7—C8—C9100.83 (19)
C7—N1—C4—C5116.5 (2)N1—C7—C10—C111.1 (3)
N2—N1—C7—C822.13 (18)N1—C7—C10—C15−178.22 (19)
N2—N1—C7—C10−100.56 (17)C8—C7—C10—C11−116.5 (2)
C4—N1—C7—C8−101.47 (18)C8—C7—C10—C1564.2 (2)
C4—N1—C7—C10135.84 (17)O1—C9—C8—C7−165.5 (2)
N1—N2—C9—O1179.81 (18)N2—C9—C8—C713.5 (2)
N1—N2—C9—C80.8 (2)C7—C10—C15—C14−179.7 (2)
C16—O2—C13—C12173.8 (2)C11—C10—C15—C140.9 (3)
C16—O2—C13—C14−6.0 (3)C12—C11—C10—C7179.69 (19)
C3—C2—C1—C6−1.5 (4)C12—C11—C10—C15−1.0 (3)
C3—C2—C1—F178.3 (3)C10—C11—C12—C130.5 (3)
C4—C3—C2—C11.2 (4)C11—C12—C13—O2−179.71 (19)
N1—C4—C3—C2−176.6 (2)C11—C12—C13—C140.1 (3)
C5—C4—C3—C2−0.4 (3)O2—C13—C14—C15179.7 (2)
N1—C4—C5—C6175.7 (2)C12—C13—C14—C15−0.1 (4)
C3—C4—C5—C6−0.3 (3)C13—C14—C15—C10−0.4 (4)

Hydrogen-bond geometry (Å, °)

D—H···AD—HH···AD···AD—H···A
N2—H2A···O1i0.861.982.838 (2)175
C5—H5A···N20.932.432.747 (3)100
C8—H8A···Fii0.972.453.388 (3)164
C11—H11A···N10.932.532.885 (3)103
C2—H2B···Cg2iii0.932.713.589 (3)157
C15—H15A···Cg1iv0.932.893.801 (3)167

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

Footnotes

Supplementary data and figures for this paper are available from the IUCr electronic archives (Reference: HK2631).

References

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