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The title compound, C15H10FNO3, was prepared from 2-nitro­acetphenone and 4-fluoro­benzaldehyde by an Aldol condensation reaction. The dihedral angle formed by the two benzene rings is 67.37 (2)°. The crystal structure is stabilized by weak inter­molecular C—H...O and C—H...F hydrogen bonds.

Supporting information

cif

Crystallographic Information File (CIF) https://doi.org/10.1107/S160053681001809X/lh5041sup1.cif
Contains datablocks global, I

hkl

Structure factor file (CIF format) https://doi.org/10.1107/S160053681001809X/lh5041Isup2.hkl
Contains datablock I

CCDC reference: 781389

Key indicators

  • Single-crystal X-ray study
  • T = 293 K
  • Mean [sigma](C-C) = 0.002 Å
  • R factor = 0.044
  • wR factor = 0.141
  • Data-to-parameter ratio = 16.1

checkCIF/PLATON results

No syntax errors found



Alert level C PLAT230_ALERT_2_C Hirshfeld Test Diff for C9 -- C10 .. 5.42 su PLAT910_ALERT_3_C Missing # of FCF Reflections Below Th(Min) ..... 3 PLAT911_ALERT_3_C Missing # FCF Refl Between THmin & STh/L= 0.600 6 PLAT912_ALERT_4_C Missing # of FCF Reflections Above STh/L= 0.600 15
Alert level G PLAT128_ALERT_4_G Alternate Setting of Space-group P21/c ....... P21/n PLAT199_ALERT_1_G Check the Reported _cell_measurement_temperature 293 K PLAT200_ALERT_1_G Check the Reported _diffrn_ambient_temperature 293 K
0 ALERT level A = In general: serious problem 0 ALERT level B = Potentially serious problem 4 ALERT level C = Check and explain 3 ALERT level G = General alerts; check 2 ALERT type 1 CIF construction/syntax error, inconsistent or missing data 1 ALERT type 2 Indicator that the structure model may be wrong or deficient 2 ALERT type 3 Indicator that the structure quality may be low 2 ALERT type 4 Improvement, methodology, query or suggestion 0 ALERT type 5 Informative message, check

Comment top

Among flavonoids, chalcones have been identified as interesting compounds having multiple biological activities which include antiinflammatory (Hsieh et al.,1998) and antioxidant (Anto et al.,1994). Of particular interest, the effectiveness of chalcones against cancer has been investigated (De Vincenzo et al.,2000; Dimmock et al.,1998). As part of our search for new biologically active compounds we synthesized the title compound (I) and report its crystal structure herein.

In the title molecule (Fig. 1) the dihedral angle formed by the two benzene rings is 67.44 (3)°. The nitro group is twisted from the attached benzene ring forming a dihedral angle of 53.73 (5)°. All of the bond lengths and bond angles are in normal ranges and comparable to those in related structures (Fun et al.,2008; Guo et al.,2009). The crystal structure is stabilized by weak intermolecular C—H···O and C—H···F hydrogen bonds.

Related literature top

For the biological activities of chalcones, see: Hsieh et al. (1998); Anto et al. (1994); De Vincenzo et al.(2000); Dimmock et al. (1998). For related structures, see: Fun et al. (2008); Guo et al. (2009).

Experimental top

A mixture of 2-nitroacetphenone (0.02 mol), 4-fluorobenzaldehyde (0.02 mol) and 8% NaOH(5 ml) was stirred in ethanol(30 ml) for 4 h to afford the title compound (yield 65%). Single crystals suitable for X-ray measurements were obtained by recrystallization from ethyl acetate at room temperature.

Refinement top

H atoms were positioned geometrically and allowed to ride on their parent atoms, with C—H distances of 0.93 Å, and with Uiso(H) = 1.2Ueq of the parent atoms.

Structure description top

Among flavonoids, chalcones have been identified as interesting compounds having multiple biological activities which include antiinflammatory (Hsieh et al.,1998) and antioxidant (Anto et al.,1994). Of particular interest, the effectiveness of chalcones against cancer has been investigated (De Vincenzo et al.,2000; Dimmock et al.,1998). As part of our search for new biologically active compounds we synthesized the title compound (I) and report its crystal structure herein.

In the title molecule (Fig. 1) the dihedral angle formed by the two benzene rings is 67.44 (3)°. The nitro group is twisted from the attached benzene ring forming a dihedral angle of 53.73 (5)°. All of the bond lengths and bond angles are in normal ranges and comparable to those in related structures (Fun et al.,2008; Guo et al.,2009). The crystal structure is stabilized by weak intermolecular C—H···O and C—H···F hydrogen bonds.

For the biological activities of chalcones, see: Hsieh et al. (1998); Anto et al. (1994); De Vincenzo et al.(2000); Dimmock et al. (1998). For related structures, see: Fun et al. (2008); Guo et al. (2009).

Computing details top

Data collection: SMART (Bruker, 1997); cell refinement: SAINT (Bruker, 1997); data reduction: SAINT (Bruker, 1997); program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: SHELXTL (Sheldrick, 2008); software used to prepare material for publication: SHELXTL (Sheldrick, 2008).

Figures top
[Figure 1] Fig. 1. The molecular structure of the title compound with the atom-labeling scheme. Displacement ellipsoids are drawn at the 30% probability level.
(E)-3-(4-Fluorophenyl)-1-(2-nitrophenyl)prop-2-en-1-one top
Crystal data top
C15H10FNO3F(000) = 560
Mr = 271.24Dx = 1.401 Mg m3
Monoclinic, P21/nMo Kα radiation, λ = 0.71073 Å
Hall symbol: -P 2ynCell parameters from 2218 reflections
a = 7.7698 (16) Åθ = 3.2–27.5°
b = 17.072 (3) ŵ = 0.11 mm1
c = 9.759 (2) ÅT = 293 K
β = 96.72 (3)°Bar, colourless
V = 1285.6 (5) Å30.3 × 0.3 × 0.2 mm
Z = 4
Data collection top
Bruker SMART CCD
diffractometer
2218 reflections with I > 2σ(I)
Radiation source: fine-focus sealed tubeRint = 0.021
Graphite monochromatorθmax = 27.5°, θmin = 3.2°
φ and ω scansh = 910
12293 measured reflectionsk = 2222
2921 independent reflectionsl = 1212
Refinement top
Refinement on F2Primary atom site location: structure-invariant direct methods
Least-squares matrix: fullSecondary atom site location: difference Fourier map
R[F2 > 2σ(F2)] = 0.044Hydrogen site location: inferred from neighbouring sites
wR(F2) = 0.141H-atom parameters constrained
S = 1.13 w = 1/[σ2(Fo2) + (0.0695P)2 + 0.2079P]
where P = (Fo2 + 2Fc2)/3
2921 reflections(Δ/σ)max < 0.001
181 parametersΔρmax = 0.24 e Å3
0 restraintsΔρmin = 0.19 e Å3
Crystal data top
C15H10FNO3V = 1285.6 (5) Å3
Mr = 271.24Z = 4
Monoclinic, P21/nMo Kα radiation
a = 7.7698 (16) ŵ = 0.11 mm1
b = 17.072 (3) ÅT = 293 K
c = 9.759 (2) Å0.3 × 0.3 × 0.2 mm
β = 96.72 (3)°
Data collection top
Bruker SMART CCD
diffractometer
2218 reflections with I > 2σ(I)
12293 measured reflectionsRint = 0.021
2921 independent reflections
Refinement top
R[F2 > 2σ(F2)] = 0.0440 restraints
wR(F2) = 0.141H-atom parameters constrained
S = 1.13Δρmax = 0.24 e Å3
2921 reflectionsΔρmin = 0.19 e Å3
181 parameters
Special details top

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 > 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) top
xyzUiso*/Ueq
O30.08601 (15)0.10025 (8)0.43283 (13)0.0659 (4)
C70.22626 (19)0.11601 (9)0.49650 (15)0.0449 (3)
C90.18075 (19)0.04525 (9)0.70546 (15)0.0469 (3)
H9A0.08710.02260.65170.056*
C60.36095 (18)0.15551 (8)0.42269 (14)0.0418 (3)
C80.27359 (19)0.09685 (9)0.64309 (15)0.0472 (4)
H8A0.36890.12090.69240.057*
C150.1386 (2)0.05036 (9)0.88492 (16)0.0495 (4)
H15A0.07250.07940.81730.059*
F10.27941 (18)0.06060 (9)1.24775 (11)0.0933 (4)
N10.13799 (19)0.23833 (8)0.29207 (17)0.0589 (4)
C100.21056 (19)0.02052 (9)0.84967 (15)0.0449 (3)
C110.3057 (2)0.06445 (10)0.95326 (16)0.0522 (4)
H11A0.35360.11220.93170.063*
C10.31757 (19)0.20928 (9)0.31805 (16)0.0471 (4)
C50.5339 (2)0.13342 (10)0.44662 (16)0.0521 (4)
H5A0.56850.09770.51650.063*
C140.1637 (2)0.07817 (11)1.01808 (18)0.0569 (4)
H14A0.11790.12611.04080.068*
C120.3287 (2)0.03713 (12)1.08766 (17)0.0595 (5)
H12A0.39110.06611.15740.071*
C130.2572 (2)0.03371 (12)1.11546 (16)0.0593 (5)
C40.6559 (2)0.16380 (12)0.36778 (19)0.0634 (5)
H4A0.77140.14870.38570.076*
O20.07277 (18)0.26603 (9)0.38907 (18)0.0830 (5)
C20.4367 (2)0.23925 (11)0.2374 (2)0.0643 (5)
H2A0.40260.27450.16670.077*
C30.6067 (3)0.21593 (13)0.2637 (2)0.0702 (5)
H3A0.68880.23560.21060.084*
O10.0655 (2)0.23414 (11)0.17437 (17)0.0930 (5)
Atomic displacement parameters (Å2) top
U11U22U33U12U13U23
O30.0545 (7)0.0779 (9)0.0612 (7)0.0237 (6)0.0098 (5)0.0163 (6)
C70.0435 (8)0.0443 (8)0.0459 (8)0.0029 (6)0.0003 (6)0.0010 (6)
C90.0446 (8)0.0472 (8)0.0477 (8)0.0016 (6)0.0013 (6)0.0025 (6)
C60.0411 (7)0.0437 (7)0.0396 (7)0.0021 (6)0.0009 (5)0.0065 (6)
C80.0424 (7)0.0526 (9)0.0455 (8)0.0057 (6)0.0006 (6)0.0017 (6)
C150.0508 (8)0.0491 (8)0.0488 (8)0.0039 (6)0.0063 (7)0.0005 (6)
F10.1009 (9)0.1298 (11)0.0478 (6)0.0207 (8)0.0028 (6)0.0285 (6)
N10.0533 (8)0.0473 (8)0.0755 (10)0.0011 (6)0.0049 (7)0.0163 (7)
C100.0432 (7)0.0503 (8)0.0417 (7)0.0059 (6)0.0076 (6)0.0004 (6)
C110.0486 (8)0.0571 (9)0.0515 (8)0.0001 (7)0.0084 (7)0.0037 (7)
C10.0458 (8)0.0396 (7)0.0560 (9)0.0011 (6)0.0070 (6)0.0006 (6)
C50.0474 (8)0.0621 (10)0.0456 (8)0.0040 (7)0.0002 (6)0.0042 (7)
C140.0590 (9)0.0554 (9)0.0577 (9)0.0109 (7)0.0126 (8)0.0124 (7)
C120.0538 (9)0.0791 (12)0.0448 (8)0.0068 (8)0.0020 (7)0.0115 (8)
C130.0555 (9)0.0819 (12)0.0411 (8)0.0204 (9)0.0075 (7)0.0121 (8)
C40.0413 (8)0.0821 (13)0.0678 (11)0.0007 (8)0.0105 (8)0.0142 (9)
O20.0623 (8)0.0779 (10)0.1116 (12)0.0149 (7)0.0225 (8)0.0109 (8)
C20.0669 (11)0.0554 (10)0.0734 (12)0.0025 (8)0.0199 (9)0.0147 (8)
C30.0601 (11)0.0744 (12)0.0809 (13)0.0075 (9)0.0287 (10)0.0056 (10)
O10.0797 (10)0.1129 (13)0.0809 (10)0.0104 (9)0.0132 (8)0.0361 (9)
Geometric parameters (Å, º) top
O3—C71.2195 (18)C10—C111.399 (2)
C7—C81.472 (2)C11—C121.384 (2)
C7—C61.498 (2)C11—H11A0.9300
C9—C81.330 (2)C1—C21.382 (2)
C9—C101.462 (2)C5—C41.390 (2)
C9—H9A0.9300C5—H5A0.9300
C6—C11.385 (2)C14—C131.359 (3)
C6—C51.389 (2)C14—H14A0.9300
C8—H8A0.9300C12—C131.371 (3)
C15—C141.376 (2)C12—H12A0.9300
C15—C101.393 (2)C4—C31.371 (3)
C15—H15A0.9300C4—H4A0.9300
F1—C131.3619 (18)C2—C31.375 (3)
N1—O21.220 (2)C2—H2A0.9300
N1—O11.221 (2)C3—H3A0.9300
N1—C11.475 (2)
O3—C7—C8123.58 (14)C2—C1—C6122.96 (15)
O3—C7—C6119.14 (13)C2—C1—N1117.45 (15)
C8—C7—C6117.27 (12)C6—C1—N1119.56 (13)
C8—C9—C10126.77 (14)C6—C5—C4121.00 (16)
C8—C9—H9A116.6C6—C5—H5A119.5
C10—C9—H9A116.6C4—C5—H5A119.5
C1—C6—C5116.81 (14)C13—C14—C15118.23 (17)
C1—C6—C7121.96 (13)C13—C14—H14A120.9
C5—C6—C7120.89 (14)C15—C14—H14A120.9
C9—C8—C7120.32 (14)C13—C12—C11118.32 (16)
C9—C8—H8A119.8C13—C12—H12A120.8
C7—C8—H8A119.8C11—C12—H12A120.8
C14—C15—C10121.09 (16)C14—C13—F1118.22 (18)
C14—C15—H15A119.5C14—C13—C12123.39 (15)
C10—C15—H15A119.5F1—C13—C12118.40 (17)
O2—N1—O1124.40 (16)C3—C4—C5120.24 (16)
O2—N1—C1117.87 (15)C3—C4—H4A119.9
O1—N1—C1117.71 (16)C5—C4—H4A119.9
C15—C10—C11118.74 (14)C3—C2—C1118.66 (17)
C15—C10—C9117.76 (14)C3—C2—H2A120.7
C11—C10—C9123.49 (15)C1—C2—H2A120.7
C12—C11—C10120.21 (16)C4—C3—C2120.31 (16)
C12—C11—H11A119.9C4—C3—H3A119.8
C10—C11—H11A119.9C2—C3—H3A119.8
Hydrogen-bond geometry (Å, º) top
D—H···AD—HH···AD···AD—H···A
C4—H4A···O3i0.932.573.500 (2)177
C5—H5A···F1ii0.932.543.396 (2)153
C9—H9A···O30.932.512.836 (2)101
C9—H9A···O3iii0.932.573.411 (2)150
Symmetry codes: (i) x+1, y, z; (ii) x+1, y, z+2; (iii) x, y, z+1.

Experimental details

Crystal data
Chemical formulaC15H10FNO3
Mr271.24
Crystal system, space groupMonoclinic, P21/n
Temperature (K)293
a, b, c (Å)7.7698 (16), 17.072 (3), 9.759 (2)
β (°) 96.72 (3)
V3)1285.6 (5)
Z4
Radiation typeMo Kα
µ (mm1)0.11
Crystal size (mm)0.3 × 0.3 × 0.2
Data collection
DiffractometerBruker SMART CCD
Absorption correction
No. of measured, independent and
observed [I > 2σ(I)] reflections
12293, 2921, 2218
Rint0.021
(sin θ/λ)max1)0.649
Refinement
R[F2 > 2σ(F2)], wR(F2), S 0.044, 0.141, 1.13
No. of reflections2921
No. of parameters181
H-atom treatmentH-atom parameters constrained
Δρmax, Δρmin (e Å3)0.24, 0.19

Computer programs: SMART (Bruker, 1997), SAINT (Bruker, 1997), SHELXS97 (Sheldrick, 2008), SHELXL97 (Sheldrick, 2008), SHELXTL (Sheldrick, 2008).

Hydrogen-bond geometry (Å, º) top
D—H···AD—HH···AD···AD—H···A
C4—H4A···O3i0.932.573.500 (2)177.3
C5—H5A···F1ii0.932.543.396 (2)153.0
C9—H9A···O3iii0.932.573.411 (2)149.9
Symmetry codes: (i) x+1, y, z; (ii) x+1, y, z+2; (iii) x, y, z+1.
 

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