organic compounds
1-{3-(4-Chlorophenyl)-5-[4-(propan-2-yl)phenyl]-4,5-dihydro-1H-pyrazol-1-yl}propan-1-one
aDepartment of Studies in Chemistry, Mangalore University, Mangalagangotri 574 199, India, bDepartment of Studies in Chemistry, Industrial Chemistry Section, Mangalore University, Mangalagangotri 574 199, India, and cDepartment of Chemistry, Keene State College, 229 Main Street, Keene, NH 03435-2001, USA
*Correspondence e-mail: jjasinski@keene.edu
In the title compound, C21H23ClN2O, the dihedral angle between the benzene rings is 83.2 (6)°, while the mean plane of the pyrazole ring [r.m.s. deviation = 0.043 (1) Å] makes dihedral angles of 3.4 (3) and 86.2 (1)° with the benzene rings. In the crystal, a pair of weak C—H⋯O interactions between the benzene ring and the propan-1-one group link the molecules into an inversion dimer with an R22(16) graph-set motif. In addition, a weak π–π stacking interaction [centroid–centroid distance = 3.959 (4) Å] connects the dimers into a tape running along [201].
CCDC reference: 1006823
Related literature
For the biological activity of pyrazolines, see: Taylor et al. (1992); Lombardino & Otterness (1977); Manna et al. (2005); Samshuddin et al. (2012a,b). For standard bond lengths, see: Allen et al. (1987). For a related structure, see: Narayana et al., (2014).
Experimental
Crystal data
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Data collection: CrysAlis PRO (Agilent, 2012); cell CrysAlis PRO (Agilent, 2012); data reduction: CrysAlis RED (Agilent, 2012); program(s) used to solve structure: SUPERFLIP (Palatinus et al., 2012); program(s) used to refine structure: SHELXL2012 (Sheldrick, 2008); molecular graphics: OLEX2 (Dolomanov et al., 2009); software used to prepare material for publication: OLEX2 (Dolomanov et al., 2009).
Supporting information
CCDC reference: 1006823
https://doi.org/10.1107/S1600536814013075/is5364sup1.cif
contains datablock I. DOI:Structure factors: contains datablock I. DOI: https://doi.org/10.1107/S1600536814013075/is5364Isup2.hkl
Supporting information file. DOI: https://doi.org/10.1107/S1600536814013075/is5364Isup3.cml
To a mixture of (2E)-1-(4-chlorophenyl)-3-[4-(propan-2-yl)phenyl] prop-2-en-1-one (2.85 g, 0.01 mol) and hydrazine hydrate (0.5 mL, 0.01 mol) in 20 mL propionic acid was refluxed for 8 h (Fig. 3). The reaction mixture was cooled and poured into 50 mL ice-cold water. The precipitate formed was collected by filtration and purified by recrystallization from ethanol. Single crystals were grown from DMF by the slow evaporation method. (m.p.: 365–367 K).
All of the H atoms were placed in their calculated positions and then refined using the riding model with Atom—H lengths of 0.95–1.00 Å (CH), 0.99 Å (CH2) or 0.98 Å (CH3). Isotropic displacement parameters for these atoms were set to 1.2 (CH, CH2) or 1.5 (CH3) times Ueq of the parent atom. Idealised Me refined as a rotating group.
Pyrazolines are important nitrogen containing five-membered
Pyrazoline derivatives possess important biological activities, including antitumor (Taylor et al., 1992), immunosuppressive (Lombardino & Otterness, 1977), anticancer (Manna et al., 2005), antimicrobial, analgesic and antioxidant activities (Samshuddin et al., 2012a,b).In the title compound, the dihedral angle between the benzene rings is 83.2 (6)°, while the pyrazole ring is separated from each of the benzene rings by 3.4 (3)° (C16–C21) and 86.2 (1)° (C7–C12), respectively (Fig. 1). Bond lengths are in normal ranges (Allen et al., 1987). In the crystal, a weak C—H···O intermolecular interaction between the benzene ring and the propan-1-one group is observed forming dimers in an R22(16) ring-set motif (Fig. 2). In addition, a weak π–π intermolecular stacking interaction [Cg3···Cg3 (1 - x, 2 - y, 1 - z) = 3.959 (4) Å; Cg3: C16–C21] is present and influences the crystal packing.
For the biological activity of pyrazolines, see: Taylor et al. (1992); Lombardino & Otterness (1977); Manna et al. (2005); Samshuddin et al. (2012a,b). For standard bond lengths, see: Allen et al. (1987). For a related structure, see: Narayana et al., (2014).
Data collection: CrysAlis PRO (Agilent, 2012); cell
CrysAlis PRO (Agilent, 2012); data reduction: CrysAlis RED (Agilent, 2012); program(s) used to solve structure: SUPERFLIP (Palatinus et al., 2012); program(s) used to refine structure: SHELXL2012 (Sheldrick, 2008); molecular graphics: OLEX2 (Dolomanov et al., 2009); software used to prepare material for publication: OLEX2 (Dolomanov et al., 2009).C21H23ClN2O | Z = 2 |
Mr = 354.86 | F(000) = 376 |
Triclinic, P1 | Dx = 1.286 Mg m−3 |
a = 6.6042 (3) Å | Cu Kα radiation, λ = 1.54184 Å |
b = 10.1188 (9) Å | Cell parameters from 2712 reflections |
c = 14.4806 (12) Å | θ = 4.6–72.1° |
α = 98.444 (7)° | µ = 1.92 mm−1 |
β = 90.650 (6)° | T = 173 K |
γ = 106.542 (6)° | Irregular, colourless |
V = 916.13 (12) Å3 | 0.36 × 0.28 × 0.16 mm |
Agilent Eos Gemini diffractometer | 3519 independent reflections |
Radiation source: Enhance (Cu) X-ray Source | 3170 reflections with I > 2σ(I) |
Graphite monochromator | Rint = 0.039 |
Detector resolution: 16.0416 pixels mm-1 | θmax = 72.2°, θmin = 4.6° |
ω scans | h = −6→8 |
Absorption correction: multi-scan (CrysAlis PRO and CrysAlis RED; Agilent, 2012) | k = −12→12 |
Tmin = 0.583, Tmax = 0.736 | l = −14→17 |
5565 measured reflections |
Refinement on F2 | Hydrogen site location: inferred from neighbouring sites |
Least-squares matrix: full | H-atom parameters constrained |
R[F2 > 2σ(F2)] = 0.047 | w = 1/[σ2(Fo2) + (0.0778P)2 + 0.2126P] where P = (Fo2 + 2Fc2)/3 |
wR(F2) = 0.133 | (Δ/σ)max < 0.001 |
S = 1.05 | Δρmax = 0.31 e Å−3 |
3519 reflections | Δρmin = −0.27 e Å−3 |
230 parameters | Extinction correction: SHELXL2012 (Sheldrick, 2008), Fc*=kFc[1+0.001xFc2λ3/sin(2θ)]-1/4 |
0 restraints | Extinction coefficient: 0.0079 (10) |
Primary atom site location: structure-invariant direct methods |
C21H23ClN2O | γ = 106.542 (6)° |
Mr = 354.86 | V = 916.13 (12) Å3 |
Triclinic, P1 | Z = 2 |
a = 6.6042 (3) Å | Cu Kα radiation |
b = 10.1188 (9) Å | µ = 1.92 mm−1 |
c = 14.4806 (12) Å | T = 173 K |
α = 98.444 (7)° | 0.36 × 0.28 × 0.16 mm |
β = 90.650 (6)° |
Agilent Eos Gemini diffractometer | 3519 independent reflections |
Absorption correction: multi-scan (CrysAlis PRO and CrysAlis RED; Agilent, 2012) | 3170 reflections with I > 2σ(I) |
Tmin = 0.583, Tmax = 0.736 | Rint = 0.039 |
5565 measured reflections |
R[F2 > 2σ(F2)] = 0.047 | 0 restraints |
wR(F2) = 0.133 | H-atom parameters constrained |
S = 1.05 | Δρmax = 0.31 e Å−3 |
3519 reflections | Δρmin = −0.27 e Å−3 |
230 parameters |
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. |
x | y | z | Uiso*/Ueq | ||
Cl1 | 0.09015 (7) | 0.80472 (5) | 0.39149 (3) | 0.04238 (19) | |
O1 | 1.2342 (2) | 0.71922 (13) | 0.84127 (9) | 0.0348 (3) | |
N1 | 0.9973 (2) | 0.77738 (13) | 0.75592 (9) | 0.0247 (3) | |
N2 | 0.8703 (2) | 0.75374 (13) | 0.67523 (9) | 0.0239 (3) | |
C1 | 0.7420 (2) | 0.82811 (16) | 0.68834 (11) | 0.0234 (3) | |
C2 | 0.7635 (2) | 0.91195 (18) | 0.78502 (11) | 0.0272 (4) | |
H2A | 0.6352 | 0.8793 | 0.8198 | 0.033* | |
H2B | 0.7900 | 1.0126 | 0.7822 | 0.033* | |
C3 | 0.9569 (2) | 0.88334 (16) | 0.83017 (11) | 0.0243 (3) | |
H3 | 0.9150 | 0.8405 | 0.8876 | 0.029* | |
C4 | 1.1291 (2) | 0.69830 (16) | 0.76809 (11) | 0.0249 (3) | |
C5 | 1.1314 (3) | 0.58555 (16) | 0.68676 (12) | 0.0280 (4) | |
H5A | 0.9900 | 0.5161 | 0.6769 | 0.034* | |
H5B | 1.1619 | 0.6280 | 0.6292 | 0.034* | |
C6 | 1.2960 (3) | 0.51247 (19) | 0.70421 (14) | 0.0363 (4) | |
H6A | 1.2959 | 0.4423 | 0.6498 | 0.054* | |
H6B | 1.2625 | 0.4668 | 0.7596 | 0.054* | |
H6C | 1.4361 | 0.5811 | 0.7145 | 0.054* | |
C7 | 1.1482 (2) | 1.00998 (15) | 0.85394 (10) | 0.0219 (3) | |
C8 | 1.2222 (3) | 1.10049 (17) | 0.78993 (11) | 0.0258 (3) | |
H8 | 1.1504 | 1.0837 | 0.7302 | 0.031* | |
C9 | 1.3995 (3) | 1.21478 (17) | 0.81238 (11) | 0.0271 (3) | |
H9 | 1.4486 | 1.2740 | 0.7672 | 0.033* | |
C10 | 1.5071 (3) | 1.24473 (16) | 0.89944 (11) | 0.0252 (3) | |
C11 | 1.4312 (3) | 1.15487 (17) | 0.96358 (11) | 0.0278 (4) | |
H11 | 1.5005 | 1.1732 | 1.0239 | 0.033* | |
C12 | 1.2564 (3) | 1.03921 (17) | 0.94090 (11) | 0.0262 (3) | |
H12 | 1.2095 | 0.9787 | 0.9856 | 0.031* | |
C13 | 1.7049 (3) | 1.36693 (17) | 0.92541 (12) | 0.0297 (4) | |
H13 | 1.7213 | 1.3878 | 0.9952 | 0.036* | |
C14 | 1.9003 (3) | 1.3267 (2) | 0.89069 (16) | 0.0432 (5) | |
H14A | 1.8869 | 1.3024 | 0.8224 | 0.065* | |
H14B | 1.9124 | 1.2463 | 0.9183 | 0.065* | |
H14C | 2.0270 | 1.4056 | 0.9091 | 0.065* | |
C15 | 1.6934 (3) | 1.49961 (19) | 0.89028 (16) | 0.0450 (5) | |
H15A | 1.8187 | 1.5766 | 0.9146 | 0.067* | |
H15B | 1.5659 | 1.5228 | 0.9119 | 0.067* | |
H15C | 1.6884 | 1.4847 | 0.8218 | 0.067* | |
C16 | 0.5854 (2) | 0.82406 (16) | 0.61440 (11) | 0.0245 (3) | |
C17 | 0.5637 (3) | 0.73309 (19) | 0.52963 (12) | 0.0315 (4) | |
H17 | 0.6547 | 0.6753 | 0.5189 | 0.038* | |
C18 | 0.4115 (3) | 0.7264 (2) | 0.46142 (12) | 0.0338 (4) | |
H18 | 0.3968 | 0.6641 | 0.4042 | 0.041* | |
C19 | 0.2804 (3) | 0.81191 (18) | 0.47760 (12) | 0.0301 (4) | |
C20 | 0.2989 (3) | 0.90336 (18) | 0.56024 (12) | 0.0294 (4) | |
H20 | 0.2088 | 0.9619 | 0.5702 | 0.035* | |
C21 | 0.4514 (2) | 0.90838 (17) | 0.62857 (11) | 0.0272 (4) | |
H21 | 0.4644 | 0.9703 | 0.6858 | 0.033* |
U11 | U22 | U33 | U12 | U13 | U23 | |
Cl1 | 0.0387 (3) | 0.0443 (3) | 0.0417 (3) | 0.0081 (2) | −0.0167 (2) | 0.0083 (2) |
O1 | 0.0367 (7) | 0.0342 (7) | 0.0332 (7) | 0.0118 (5) | −0.0104 (5) | 0.0020 (5) |
N1 | 0.0265 (7) | 0.0227 (6) | 0.0223 (6) | 0.0062 (5) | −0.0045 (5) | −0.0024 (5) |
N2 | 0.0236 (7) | 0.0228 (6) | 0.0230 (6) | 0.0046 (5) | −0.0026 (5) | 0.0009 (5) |
C1 | 0.0214 (7) | 0.0229 (7) | 0.0230 (7) | 0.0026 (6) | 0.0013 (6) | 0.0021 (6) |
C2 | 0.0218 (8) | 0.0321 (8) | 0.0249 (8) | 0.0072 (6) | −0.0007 (6) | −0.0033 (6) |
C3 | 0.0251 (8) | 0.0242 (7) | 0.0219 (7) | 0.0063 (6) | 0.0014 (6) | −0.0002 (6) |
C4 | 0.0228 (7) | 0.0204 (7) | 0.0287 (8) | 0.0024 (6) | −0.0017 (6) | 0.0032 (6) |
C5 | 0.0273 (8) | 0.0223 (7) | 0.0333 (9) | 0.0075 (6) | −0.0015 (6) | 0.0004 (6) |
C6 | 0.0329 (9) | 0.0277 (8) | 0.0497 (11) | 0.0117 (7) | 0.0013 (8) | 0.0043 (7) |
C7 | 0.0226 (7) | 0.0218 (7) | 0.0209 (7) | 0.0079 (6) | 0.0004 (6) | −0.0012 (5) |
C8 | 0.0306 (8) | 0.0272 (8) | 0.0198 (7) | 0.0101 (6) | −0.0031 (6) | 0.0019 (6) |
C9 | 0.0336 (9) | 0.0234 (7) | 0.0253 (8) | 0.0085 (6) | 0.0030 (6) | 0.0066 (6) |
C10 | 0.0262 (8) | 0.0210 (7) | 0.0278 (8) | 0.0074 (6) | 0.0019 (6) | 0.0006 (6) |
C11 | 0.0286 (8) | 0.0287 (8) | 0.0224 (8) | 0.0043 (7) | −0.0036 (6) | 0.0010 (6) |
C12 | 0.0291 (8) | 0.0271 (8) | 0.0206 (7) | 0.0051 (6) | 0.0009 (6) | 0.0040 (6) |
C13 | 0.0317 (9) | 0.0237 (8) | 0.0287 (8) | 0.0022 (7) | 0.0000 (7) | 0.0005 (6) |
C14 | 0.0292 (9) | 0.0395 (10) | 0.0530 (12) | 0.0027 (8) | −0.0010 (8) | −0.0028 (9) |
C15 | 0.0456 (11) | 0.0261 (9) | 0.0575 (13) | 0.0008 (8) | −0.0035 (9) | 0.0079 (8) |
C16 | 0.0213 (7) | 0.0266 (8) | 0.0234 (8) | 0.0037 (6) | −0.0003 (6) | 0.0036 (6) |
C17 | 0.0333 (9) | 0.0350 (9) | 0.0269 (8) | 0.0139 (7) | −0.0009 (7) | −0.0013 (7) |
C18 | 0.0358 (9) | 0.0380 (9) | 0.0260 (8) | 0.0115 (7) | −0.0040 (7) | −0.0014 (7) |
C19 | 0.0262 (8) | 0.0321 (9) | 0.0296 (8) | 0.0028 (7) | −0.0047 (6) | 0.0085 (7) |
C20 | 0.0251 (8) | 0.0291 (8) | 0.0351 (9) | 0.0089 (6) | 0.0004 (7) | 0.0067 (7) |
C21 | 0.0244 (8) | 0.0268 (8) | 0.0284 (8) | 0.0056 (6) | 0.0014 (6) | 0.0012 (6) |
Cl1—C19 | 1.7391 (17) | C9—C10 | 1.389 (2) |
O1—C4 | 1.218 (2) | C10—C11 | 1.393 (2) |
N1—N2 | 1.3812 (18) | C10—C13 | 1.520 (2) |
N1—C3 | 1.4858 (19) | C11—H11 | 0.9500 |
N1—C4 | 1.365 (2) | C11—C12 | 1.386 (2) |
N2—C1 | 1.282 (2) | C12—H12 | 0.9500 |
C1—C2 | 1.509 (2) | C13—H13 | 1.0000 |
C1—C16 | 1.468 (2) | C13—C14 | 1.529 (3) |
C2—H2A | 0.9900 | C13—C15 | 1.525 (2) |
C2—H2B | 0.9900 | C14—H14A | 0.9800 |
C2—C3 | 1.546 (2) | C14—H14B | 0.9800 |
C3—H3 | 1.0000 | C14—H14C | 0.9800 |
C3—C7 | 1.515 (2) | C15—H15A | 0.9800 |
C4—C5 | 1.518 (2) | C15—H15B | 0.9800 |
C5—H5A | 0.9900 | C15—H15C | 0.9800 |
C5—H5B | 0.9900 | C16—C17 | 1.401 (2) |
C5—C6 | 1.516 (2) | C16—C21 | 1.391 (2) |
C6—H6A | 0.9800 | C17—H17 | 0.9500 |
C6—H6B | 0.9800 | C17—C18 | 1.382 (2) |
C6—H6C | 0.9800 | C18—H18 | 0.9500 |
C7—C8 | 1.393 (2) | C18—C19 | 1.388 (3) |
C7—C12 | 1.390 (2) | C19—C20 | 1.382 (3) |
C8—H8 | 0.9500 | C20—H20 | 0.9500 |
C8—C9 | 1.387 (2) | C20—C21 | 1.389 (2) |
C9—H9 | 0.9500 | C21—H21 | 0.9500 |
N2—N1—C3 | 113.63 (12) | C9—C10—C13 | 122.90 (14) |
C4—N1—N2 | 121.84 (13) | C11—C10—C13 | 119.59 (15) |
C4—N1—C3 | 124.15 (13) | C10—C11—H11 | 119.4 |
C1—N2—N1 | 108.33 (12) | C12—C11—C10 | 121.14 (15) |
N2—C1—C2 | 114.20 (14) | C12—C11—H11 | 119.4 |
N2—C1—C16 | 120.84 (14) | C7—C12—H12 | 119.4 |
C16—C1—C2 | 124.92 (14) | C11—C12—C7 | 121.25 (14) |
C1—C2—H2A | 111.2 | C11—C12—H12 | 119.4 |
C1—C2—H2B | 111.2 | C10—C13—H13 | 107.4 |
C1—C2—C3 | 102.65 (13) | C10—C13—C14 | 110.30 (14) |
H2A—C2—H2B | 109.2 | C10—C13—C15 | 113.48 (15) |
C3—C2—H2A | 111.2 | C14—C13—H13 | 107.4 |
C3—C2—H2B | 111.2 | C15—C13—H13 | 107.4 |
N1—C3—C2 | 100.81 (12) | C15—C13—C14 | 110.46 (16) |
N1—C3—H3 | 109.6 | C13—C14—H14A | 109.5 |
N1—C3—C7 | 112.12 (12) | C13—C14—H14B | 109.5 |
C2—C3—H3 | 109.6 | C13—C14—H14C | 109.5 |
C7—C3—C2 | 114.82 (13) | H14A—C14—H14B | 109.5 |
C7—C3—H3 | 109.6 | H14A—C14—H14C | 109.5 |
O1—C4—N1 | 120.11 (15) | H14B—C14—H14C | 109.5 |
O1—C4—C5 | 123.92 (14) | C13—C15—H15A | 109.5 |
N1—C4—C5 | 115.96 (14) | C13—C15—H15B | 109.5 |
C4—C5—H5A | 109.3 | C13—C15—H15C | 109.5 |
C4—C5—H5B | 109.3 | H15A—C15—H15B | 109.5 |
H5A—C5—H5B | 108.0 | H15A—C15—H15C | 109.5 |
C6—C5—C4 | 111.61 (14) | H15B—C15—H15C | 109.5 |
C6—C5—H5A | 109.3 | C17—C16—C1 | 120.97 (14) |
C6—C5—H5B | 109.3 | C21—C16—C1 | 120.24 (14) |
C5—C6—H6A | 109.5 | C21—C16—C17 | 118.76 (15) |
C5—C6—H6B | 109.5 | C16—C17—H17 | 119.6 |
C5—C6—H6C | 109.5 | C18—C17—C16 | 120.78 (16) |
H6A—C6—H6B | 109.5 | C18—C17—H17 | 119.6 |
H6A—C6—H6C | 109.5 | C17—C18—H18 | 120.5 |
H6B—C6—H6C | 109.5 | C17—C18—C19 | 119.09 (16) |
C8—C7—C3 | 121.51 (14) | C19—C18—H18 | 120.5 |
C12—C7—C3 | 120.69 (14) | C18—C19—Cl1 | 119.18 (14) |
C12—C7—C8 | 117.80 (14) | C20—C19—Cl1 | 119.38 (14) |
C7—C8—H8 | 119.6 | C20—C19—C18 | 121.45 (16) |
C9—C8—C7 | 120.73 (14) | C19—C20—H20 | 120.5 |
C9—C8—H8 | 119.6 | C19—C20—C21 | 118.94 (15) |
C8—C9—H9 | 119.2 | C21—C20—H20 | 120.5 |
C8—C9—C10 | 121.58 (14) | C16—C21—H21 | 119.5 |
C10—C9—H9 | 119.2 | C20—C21—C16 | 120.97 (15) |
C9—C10—C11 | 117.48 (15) | C20—C21—H21 | 119.5 |
Cl1—C19—C20—C21 | −179.97 (12) | C3—C7—C8—C9 | −179.03 (14) |
O1—C4—C5—C6 | −5.7 (2) | C3—C7—C12—C11 | −179.83 (14) |
N1—N2—C1—C2 | −1.75 (18) | C4—N1—N2—C1 | 170.50 (14) |
N1—N2—C1—C16 | −179.56 (13) | C4—N1—C3—C2 | −167.46 (14) |
N1—C3—C7—C8 | 66.98 (18) | C4—N1—C3—C7 | 69.93 (19) |
N1—C3—C7—C12 | −112.81 (16) | C7—C8—C9—C10 | −1.2 (2) |
N1—C4—C5—C6 | 175.14 (14) | C8—C7—C12—C11 | 0.4 (2) |
N2—N1—C3—C2 | 5.53 (16) | C8—C9—C10—C11 | 0.5 (2) |
N2—N1—C3—C7 | −117.09 (14) | C8—C9—C10—C13 | 178.43 (15) |
N2—N1—C4—O1 | −177.75 (14) | C9—C10—C11—C12 | 0.7 (2) |
N2—N1—C4—C5 | 1.4 (2) | C9—C10—C13—C14 | −83.6 (2) |
N2—C1—C2—C3 | 5.09 (18) | C9—C10—C13—C15 | 40.9 (2) |
N2—C1—C16—C17 | 3.7 (2) | C10—C11—C12—C7 | −1.1 (3) |
N2—C1—C16—C21 | −178.10 (14) | C11—C10—C13—C14 | 94.32 (19) |
C1—C2—C3—N1 | −5.77 (15) | C11—C10—C13—C15 | −141.14 (17) |
C1—C2—C3—C7 | 114.94 (14) | C12—C7—C8—C9 | 0.8 (2) |
C1—C16—C17—C18 | 177.91 (16) | C13—C10—C11—C12 | −177.35 (15) |
C1—C16—C21—C20 | −178.43 (14) | C16—C1—C2—C3 | −177.20 (14) |
C2—C1—C16—C17 | −173.90 (16) | C16—C17—C18—C19 | 0.4 (3) |
C2—C1—C16—C21 | 4.3 (2) | C17—C16—C21—C20 | −0.1 (2) |
C2—C3—C7—C8 | −47.29 (19) | C17—C18—C19—Cl1 | 179.47 (14) |
C2—C3—C7—C12 | 132.92 (15) | C17—C18—C19—C20 | 0.0 (3) |
C3—N1—N2—C1 | −2.67 (17) | C18—C19—C20—C21 | −0.5 (3) |
C3—N1—C4—O1 | −5.3 (2) | C19—C20—C21—C16 | 0.6 (2) |
C3—N1—C4—C5 | 173.88 (13) | C21—C16—C17—C18 | −0.4 (3) |
D—H···A | D—H | H···A | D···A | D—H···A |
C11—H11···O1i | 0.95 | 2.51 | 3.419 (2) | 161 |
Symmetry code: (i) −x+3, −y+2, −z+2. |
D—H···A | D—H | H···A | D···A | D—H···A |
C11—H11···O1i | 0.95 | 2.51 | 3.419 (2) | 161 |
Symmetry code: (i) −x+3, −y+2, −z+2. |
Acknowledgements
BN thanks the UGC for financial assistance through a BSR one-time grant for the purchase of chemicals. VVS thanks the DST for financial assistance through a PURSE grant. JPJ acknowledges the NSF–MRI program (grant No. CHE-1039027) for funds to purchase the X-ray diffractometer.
References
Agilent (2012). CrysAlis PRO and CrysAlis RED. Agilent Technologies, Yarnton, England. Google Scholar
Allen, F. H., Kennard, O., Watson, D. G., Brammer, L., Orpen, A. G. & Taylor, R. (1987). J. Chem. Soc. Perkin Trans. 2, pp. S1–19. CSD CrossRef Web of Science Google Scholar
Dolomanov, O. V., Bourhis, L. J., Gildea, R. J., Howard, J. A. K. & Puschmann, H. (2009). J. Appl. Cryst. 42, 339–341. Web of Science CrossRef CAS IUCr Journals Google Scholar
Lombardino, J. G. & Otterness, I. G. (1977). J. Med. Chem. 20, 830–834. Google Scholar
Manna, F., Chimenti, F., Fioravanti, F., Bolasco, A., Seecci, D., Chimenti, P., Ferlini, C. & Scambia, G. (2005). Bioorg. Med. Chem. Lett. 15, 4632–4635. Web of Science CrossRef PubMed CAS Google Scholar
Narayana, B., Salian, V. V., Sarojini, B. K. & Jasinski, J. P. (2014). Acta Cryst. E70, o761–o762. CSD CrossRef IUCr Journals Google Scholar
Palatinus, L., Prathapa, S. J. & van Smaalen, S. (2012). J. Appl. Cryst. 45, 575–580. Web of Science CrossRef CAS IUCr Journals Google Scholar
Samshuddin, S., Narayana, B., Sarojini, B. K., Khan, M. T. H., Yathirajan, H. S., Darsan Raj, C. G. & Ragavendra, R. (2012b). Med. Chem. Res. 21, 2012–2022. Web of Science CSD CrossRef CAS Google Scholar
Samshuddin, S., Narayana, B., Sarojini, B. K., Yathirajan, H. S. & Ragavendra, R. (2012a). Pharma Chem. 4, 1445–1457. CAS Google Scholar
Sheldrick, G. M. (2008). Acta Cryst. A64, 112–122. Web of Science CrossRef CAS IUCr Journals Google Scholar
Taylor, E. C., Patel, H. & Kumar, H. (1992). Tetrahedron, 48, 8089–8100. CrossRef CAS Web of Science Google Scholar
This is an open-access article distributed under the terms of the Creative Commons Attribution (CC-BY) Licence, which permits unrestricted use, distribution, and reproduction in any medium, provided the original authors and source are cited.
Pyrazolines are important nitrogen containing five-membered heterocyclic compounds. Pyrazoline derivatives possess important biological activities, including antitumor (Taylor et al., 1992), immunosuppressive (Lombardino & Otterness, 1977), anticancer (Manna et al., 2005), antimicrobial, analgesic and antioxidant activities (Samshuddin et al., 2012a,b).
In the title compound, the dihedral angle between the benzene rings is 83.2 (6)°, while the pyrazole ring is separated from each of the benzene rings by 3.4 (3)° (C16–C21) and 86.2 (1)° (C7–C12), respectively (Fig. 1). Bond lengths are in normal ranges (Allen et al., 1987). In the crystal, a weak C—H···O intermolecular interaction between the benzene ring and the propan-1-one group is observed forming dimers in an R22(16) ring-set motif (Fig. 2). In addition, a weak π–π intermolecular stacking interaction [Cg3···Cg3 (1 - x, 2 - y, 1 - z) = 3.959 (4) Å; Cg3: C16–C21] is present and influences the crystal packing.