organic compounds
7-Chloro-3-phenylbenzo[4,5]thiazolo[2,3-c][1,2,4]triazole
aX-ray Crystallography Unit, School of Physics, Universiti Sains Malaysia, 11800 USM, Penang, Malaysia, bChemistry Division, School of Advanced Sciences, VIT University, Vellore-632014, Tamil Nadu, India, and cDepartment of Chemistry, P A College of Engineering, Nadupadavu, D.K., Mangalore, India
*Correspondence e-mail: hkfun@usm.my
In the title compound, C14H8ClN3S, the dihedral angle between the approximately planar triple-fused ring system (r.m.s. deviation = 0.065 Å) and the pendant phenyl ring is 62.25 (5)°. In the crystal, molecules are linked into infinite chains along the c-axis direction by C—H⋯N hydrogen bonds. Aromatic π–π stacking interactions [centroid–centroid distances = 3.7499 (8) and 3.5644 (8) Å] and weak C—H⋯π interactions are also observed.
Related literature
For the biological activity of benzothiozole derivatives, see: Yaseen et al. (2006); Kini et al. (2007); Munirajasekhar et al. (2011); Gurupadayya et al. (2008); Bowyer et al. (2007); Mittal et al. (2007); Pozas et al. (2005); Rana et al. (2008).
Experimental
Crystal data
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Refinement
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Data collection: APEX2 (Bruker, 2009); cell SAINT (Bruker, 2009); data reduction: SAINT; program(s) used to solve structure: SHELXTL (Sheldrick, 2008); program(s) used to refine structure: SHELXTL; molecular graphics: SHELXTL; software used to prepare material for publication: SHELXTL and PLATON (Spek, 2009).
Supporting information
https://doi.org/10.1107/S1600536811039456/hb6414sup1.cif
contains datablocks global, I. DOI:Structure factors: contains datablock I. DOI: https://doi.org/10.1107/S1600536811039456/hb6414Isup2.hkl
Supporting information file. DOI: https://doi.org/10.1107/S1600536811039456/hb6414Isup3.cml
To a solution of the 2-benzylidene-1-(6-chlorobenzo[d]thiazol-2-yl)hydrazine (2 mmol) in dichloromethane (10 mL) at room temperature, iodobenzene diacetate (2 mmol) was added in 2–3 portions over 5 min. The resultant reaction mixture was stirred for 45 min. The solvent was evaporated under high vacuum and then purified by
(40% ethyl acetate in chloroform). The product was recrystalized from ethanol to give colourless blocks.All the H atoms were placed in calculated positions with C–H = 0.93 Å. The Uiso values were constrained to be 1.2Ueq of the
for the H atoms.Benzothiazole derivatives have emerged as significant components in various diversified therapeutic applications. Literature review reveals that benzothiazoles and their derivatives show considerable activity including potent inhibition of human immunodeficiency virus type 1 (HIV-1), replication by HIV-1 protease inhibition (Yaseen et al.,2006), antitumor (Kini et al., 2007), anthelmintic (Munirajasekhar et al., 2011), analgesic, anti-inflammatory (Gurupadayya et al.,2008), antimalarial (Bowyer et al.,2007), antifungal (Mittal et al., 2007), anticandidous (Pozas et al.,2005) and various CNS activities (Rana et al., 2008). The present work describes the synthesis and
of the title compound, 7-Chloro-3- phenylbenzo[4,5]thiazolo[2,3-c][1,2,4]triazole, which was prepared from the reaction of 2-benzylidene-1-(6-chlorobenzo[d]thiazol-2-yl)hydrazine treated with iodobenzene diacetate.In the title compound of (I), (Fig. 1), the benzene (C9–C14) ring makes dihedral angles of 5.59 (7) and 2.45 (6)° with the thiazole ring (S1/N1/C8/C9/C14) and the mean plane of triazole (N1–N3/C7/C8) ring, respectively. The dihedral angle between the two benzene (C1–C6 and C9–C14) rings is 64.11 (6)°.
In the π–π stacking interactions are observed between the triazole (N1–N3/C7/C8) ; centroid Cg2) and benzene (C1–C6) ; centroid Cg3) rings with a distance of Cg2···Cg3 = 3.7499 (8) Å and between triazole (N1–N3/C7/C8) ; centroid Cg2) and benzene (C9–C14) ; centroid Cg4) rings with a separation of Cg2···Cg4 = 3.5644 (8) Å. Furthermore the is stabilized by weak C—H···π interactions (Table 1) with distance of 3.5851 (15) Å.
of (Fig. 2), the molecules are linked into infinite chains along the c axis by C10—H10A···N3 hydrogen bonds.For the biological activity of benzothiozole derivatives, see: Yaseen et al. (2006); Kini et al. (2007); Munirajasekhar et al. (2011); Gurupadayya et al. (2008); Bowyer et al. (2007); Mittal et al. (2007); Pozas et al. (2005); Rana et al. (2008).
Data collection: APEX2 (Bruker, 2009); cell
SAINT (Bruker, 2009); data reduction: SAINT (Bruker, 2009); program(s) used to solve structure: SHELXTL (Sheldrick, 2008); program(s) used to refine structure: SHELXTL (Sheldrick, 2008); molecular graphics: SHELXTL (Sheldrick, 2008); software used to prepare material for publication: SHELXTL (Sheldrick, 2008) and PLATON (Spek, 2009).C14H8ClN3S | F(000) = 584 |
Mr = 285.74 | Dx = 1.569 Mg m−3 |
Monoclinic, P21/c | Mo Kα radiation, λ = 0.71073 Å |
Hall symbol: -P 2ybc | Cell parameters from 6868 reflections |
a = 16.9941 (13) Å | θ = 2.4–31.4° |
b = 5.8895 (5) Å | µ = 0.47 mm−1 |
c = 12.0930 (9) Å | T = 296 K |
β = 91.770 (1)° | Block, colourless |
V = 1209.77 (16) Å3 | 0.41 × 0.31 × 0.18 mm |
Z = 4 |
Bruker APEX DUO CCD diffractometer | 4033 independent reflections |
Radiation source: fine-focus sealed tube | 3342 reflections with I > 2σ(I) |
Graphite monochromator | Rint = 0.021 |
φ and ω scans | θmax = 31.7°, θmin = 2.4° |
Absorption correction: multi-scan (SADABS; Bruker, 2009) | h = −23→25 |
Tmin = 0.828, Tmax = 0.919 | k = −8→6 |
14981 measured reflections | l = −17→17 |
Refinement on F2 | Primary atom site location: structure-invariant direct methods |
Least-squares matrix: full | Secondary atom site location: difference Fourier map |
R[F2 > 2σ(F2)] = 0.033 | Hydrogen site location: inferred from neighbouring sites |
wR(F2) = 0.101 | H-atom parameters constrained |
S = 1.02 | w = 1/[σ2(Fo2) + (0.051P)2 + 0.2986P] where P = (Fo2 + 2Fc2)/3 |
4033 reflections | (Δ/σ)max < 0.001 |
172 parameters | Δρmax = 0.30 e Å−3 |
0 restraints | Δρmin = −0.23 e Å−3 |
C14H8ClN3S | V = 1209.77 (16) Å3 |
Mr = 285.74 | Z = 4 |
Monoclinic, P21/c | Mo Kα radiation |
a = 16.9941 (13) Å | µ = 0.47 mm−1 |
b = 5.8895 (5) Å | T = 296 K |
c = 12.0930 (9) Å | 0.41 × 0.31 × 0.18 mm |
β = 91.770 (1)° |
Bruker APEX DUO CCD diffractometer | 4033 independent reflections |
Absorption correction: multi-scan (SADABS; Bruker, 2009) | 3342 reflections with I > 2σ(I) |
Tmin = 0.828, Tmax = 0.919 | Rint = 0.021 |
14981 measured reflections |
R[F2 > 2σ(F2)] = 0.033 | 0 restraints |
wR(F2) = 0.101 | H-atom parameters constrained |
S = 1.02 | Δρmax = 0.30 e Å−3 |
4033 reflections | Δρmin = −0.23 e Å−3 |
172 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. |
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. |
x | y | z | Uiso*/Ueq | ||
S1 | 0.14776 (2) | 0.26324 (6) | 0.56813 (2) | 0.04078 (10) | |
Cl1 | 0.03783 (2) | 1.00056 (7) | 0.32558 (4) | 0.05570 (12) | |
N1 | 0.24962 (6) | 0.23101 (16) | 0.41312 (8) | 0.03099 (19) | |
N2 | 0.31988 (7) | −0.07810 (19) | 0.44194 (8) | 0.0384 (2) | |
N3 | 0.26554 (7) | −0.06213 (19) | 0.52726 (9) | 0.0401 (2) | |
C1 | 0.35771 (8) | −0.0067 (2) | 0.19026 (10) | 0.0383 (3) | |
H1A | 0.3299 | −0.1423 | 0.1940 | 0.046* | |
C2 | 0.40171 (9) | 0.0410 (3) | 0.09818 (11) | 0.0454 (3) | |
H2A | 0.4029 | −0.0621 | 0.0400 | 0.055* | |
C3 | 0.44371 (8) | 0.2413 (3) | 0.09278 (12) | 0.0455 (3) | |
H3A | 0.4736 | 0.2719 | 0.0314 | 0.055* | |
C4 | 0.44144 (8) | 0.3969 (2) | 0.17883 (11) | 0.0430 (3) | |
H4A | 0.4698 | 0.5316 | 0.1750 | 0.052* | |
C5 | 0.39691 (7) | 0.3515 (2) | 0.27057 (10) | 0.0371 (2) | |
H5A | 0.3948 | 0.4566 | 0.3278 | 0.045* | |
C6 | 0.35531 (6) | 0.1482 (2) | 0.27673 (9) | 0.0309 (2) | |
C7 | 0.30952 (7) | 0.0965 (2) | 0.37544 (9) | 0.0316 (2) | |
C8 | 0.22587 (7) | 0.1233 (2) | 0.50709 (9) | 0.0344 (2) | |
C9 | 0.20460 (6) | 0.42020 (19) | 0.38183 (9) | 0.0297 (2) | |
C10 | 0.21108 (7) | 0.5535 (2) | 0.28811 (9) | 0.0340 (2) | |
H10A | 0.2495 | 0.5239 | 0.2369 | 0.041* | |
C11 | 0.15893 (8) | 0.7317 (2) | 0.27264 (11) | 0.0382 (3) | |
H11A | 0.1620 | 0.8234 | 0.2103 | 0.046* | |
C12 | 0.10195 (7) | 0.7744 (2) | 0.34998 (11) | 0.0383 (3) | |
C13 | 0.09432 (7) | 0.6425 (2) | 0.44419 (10) | 0.0386 (3) | |
H13A | 0.0559 | 0.6734 | 0.4952 | 0.046* | |
C14 | 0.14623 (7) | 0.4629 (2) | 0.45909 (9) | 0.0334 (2) |
U11 | U22 | U33 | U12 | U13 | U23 | |
S1 | 0.04819 (18) | 0.04410 (18) | 0.03082 (15) | −0.00110 (13) | 0.01342 (12) | 0.00439 (12) |
Cl1 | 0.0502 (2) | 0.0465 (2) | 0.0703 (3) | 0.01117 (15) | −0.00102 (16) | 0.00577 (17) |
N1 | 0.0376 (5) | 0.0308 (5) | 0.0248 (4) | −0.0036 (4) | 0.0054 (3) | 0.0017 (3) |
N2 | 0.0467 (5) | 0.0359 (5) | 0.0328 (5) | 0.0011 (4) | 0.0035 (4) | 0.0031 (4) |
N3 | 0.0516 (6) | 0.0377 (5) | 0.0313 (5) | −0.0006 (5) | 0.0058 (4) | 0.0061 (4) |
C1 | 0.0435 (6) | 0.0336 (6) | 0.0379 (6) | −0.0007 (5) | 0.0065 (5) | −0.0041 (5) |
C2 | 0.0540 (7) | 0.0473 (7) | 0.0357 (6) | 0.0068 (6) | 0.0112 (5) | −0.0061 (5) |
C3 | 0.0442 (7) | 0.0528 (8) | 0.0403 (6) | 0.0066 (6) | 0.0146 (5) | 0.0078 (6) |
C4 | 0.0399 (6) | 0.0421 (7) | 0.0475 (7) | −0.0046 (5) | 0.0072 (5) | 0.0075 (5) |
C5 | 0.0394 (6) | 0.0360 (6) | 0.0362 (6) | −0.0041 (5) | 0.0037 (4) | −0.0035 (5) |
C6 | 0.0319 (5) | 0.0317 (5) | 0.0292 (5) | 0.0004 (4) | 0.0026 (4) | 0.0001 (4) |
C7 | 0.0361 (5) | 0.0306 (5) | 0.0283 (5) | −0.0018 (4) | 0.0027 (4) | −0.0017 (4) |
C8 | 0.0436 (6) | 0.0353 (6) | 0.0246 (5) | −0.0056 (5) | 0.0054 (4) | 0.0032 (4) |
C9 | 0.0342 (5) | 0.0289 (5) | 0.0261 (4) | −0.0042 (4) | 0.0022 (4) | −0.0007 (4) |
C10 | 0.0384 (5) | 0.0351 (6) | 0.0288 (5) | −0.0050 (4) | 0.0040 (4) | 0.0021 (4) |
C11 | 0.0412 (6) | 0.0370 (6) | 0.0361 (6) | −0.0036 (5) | −0.0017 (4) | 0.0066 (5) |
C12 | 0.0364 (5) | 0.0334 (6) | 0.0449 (6) | −0.0014 (4) | −0.0027 (5) | 0.0004 (5) |
C13 | 0.0367 (6) | 0.0395 (6) | 0.0398 (6) | −0.0018 (5) | 0.0061 (4) | −0.0038 (5) |
C14 | 0.0373 (5) | 0.0343 (5) | 0.0288 (5) | −0.0049 (4) | 0.0054 (4) | −0.0003 (4) |
S1—C8 | 1.7454 (13) | C3—H3A | 0.9300 |
S1—C14 | 1.7663 (12) | C4—C5 | 1.3881 (17) |
Cl1—C12 | 1.7405 (13) | C4—H4A | 0.9300 |
N1—C8 | 1.3729 (13) | C5—C6 | 1.3935 (16) |
N1—C7 | 1.3783 (15) | C5—H5A | 0.9300 |
N1—C9 | 1.3972 (14) | C6—C7 | 1.4768 (15) |
N2—C7 | 1.3140 (16) | C9—C10 | 1.3860 (15) |
N2—N3 | 1.4088 (15) | C9—C14 | 1.4062 (15) |
N3—C8 | 1.3026 (17) | C10—C11 | 1.3826 (17) |
C1—C6 | 1.3895 (16) | C10—H10A | 0.9300 |
C1—C2 | 1.3891 (18) | C11—C12 | 1.3898 (19) |
C1—H1A | 0.9300 | C11—H11A | 0.9300 |
C2—C3 | 1.381 (2) | C12—C13 | 1.3882 (18) |
C2—H2A | 0.9300 | C13—C14 | 1.3856 (17) |
C3—C4 | 1.388 (2) | C13—H13A | 0.9300 |
C8—S1—C14 | 89.57 (5) | N2—C7—N1 | 109.50 (10) |
C8—N1—C7 | 104.31 (10) | N2—C7—C6 | 126.31 (11) |
C8—N1—C9 | 114.84 (10) | N1—C7—C6 | 124.17 (10) |
C7—N1—C9 | 140.59 (9) | N3—C8—N1 | 112.25 (10) |
C7—N2—N3 | 108.51 (10) | N3—C8—S1 | 135.45 (9) |
C8—N3—N2 | 105.43 (10) | N1—C8—S1 | 112.26 (9) |
C6—C1—C2 | 119.94 (12) | C10—C9—N1 | 128.07 (10) |
C6—C1—H1A | 120.0 | C10—C9—C14 | 121.17 (11) |
C2—C1—H1A | 120.0 | N1—C9—C14 | 110.75 (10) |
C3—C2—C1 | 120.18 (13) | C11—C10—C9 | 118.29 (11) |
C3—C2—H2A | 119.9 | C11—C10—H10A | 120.9 |
C1—C2—H2A | 119.9 | C9—C10—H10A | 120.9 |
C2—C3—C4 | 120.13 (12) | C10—C11—C12 | 120.20 (12) |
C2—C3—H3A | 119.9 | C10—C11—H11A | 119.9 |
C4—C3—H3A | 119.9 | C12—C11—H11A | 119.9 |
C3—C4—C5 | 120.03 (13) | C11—C12—C13 | 122.41 (12) |
C3—C4—H4A | 120.0 | C11—C12—Cl1 | 118.02 (10) |
C5—C4—H4A | 120.0 | C13—C12—Cl1 | 119.57 (10) |
C4—C5—C6 | 119.88 (12) | C14—C13—C12 | 117.30 (11) |
C4—C5—H5A | 120.1 | C14—C13—H13A | 121.3 |
C6—C5—H5A | 120.1 | C12—C13—H13A | 121.3 |
C1—C6—C5 | 119.83 (10) | C13—C14—C9 | 120.62 (11) |
C1—C6—C7 | 120.08 (11) | C13—C14—S1 | 126.87 (9) |
C5—C6—C7 | 120.09 (10) | C9—C14—S1 | 112.50 (9) |
C7—N2—N3—C8 | −0.41 (14) | C7—N1—C8—S1 | −178.75 (8) |
C6—C1—C2—C3 | 0.6 (2) | C9—N1—C8—S1 | −3.47 (13) |
C1—C2—C3—C4 | −0.7 (2) | C14—S1—C8—N3 | −175.12 (14) |
C2—C3—C4—C5 | 0.0 (2) | C14—S1—C8—N1 | 2.37 (9) |
C3—C4—C5—C6 | 0.8 (2) | C8—N1—C9—C10 | −175.66 (11) |
C2—C1—C6—C5 | 0.19 (19) | C7—N1—C9—C10 | −2.9 (2) |
C2—C1—C6—C7 | −179.13 (12) | C8—N1—C9—C14 | 2.82 (14) |
C4—C5—C6—C1 | −0.91 (18) | C7—N1—C9—C14 | 175.61 (13) |
C4—C5—C6—C7 | 178.41 (11) | N1—C9—C10—C11 | 178.84 (11) |
N3—N2—C7—N1 | 0.01 (13) | C14—C9—C10—C11 | 0.51 (17) |
N3—N2—C7—C6 | 178.56 (11) | C9—C10—C11—C12 | 0.20 (18) |
C8—N1—C7—N2 | 0.37 (13) | C10—C11—C12—C13 | −0.4 (2) |
C9—N1—C7—N2 | −172.89 (13) | C10—C11—C12—Cl1 | −179.79 (9) |
C8—N1—C7—C6 | −178.22 (10) | C11—C12—C13—C14 | −0.12 (19) |
C9—N1—C7—C6 | 8.5 (2) | Cl1—C12—C13—C14 | 179.26 (9) |
C1—C6—C7—N2 | 59.23 (17) | C12—C13—C14—C9 | 0.83 (17) |
C5—C6—C7—N2 | −120.09 (14) | C12—C13—C14—S1 | −177.69 (9) |
C1—C6—C7—N1 | −122.43 (13) | C10—C9—C14—C13 | −1.05 (17) |
C5—C6—C7—N1 | 58.25 (16) | N1—C9—C14—C13 | −179.65 (10) |
N2—N3—C8—N1 | 0.66 (14) | C10—C9—C14—S1 | 177.67 (9) |
N2—N3—C8—S1 | 178.15 (11) | N1—C9—C14—S1 | −0.93 (12) |
C7—N1—C8—N3 | −0.66 (13) | C8—S1—C14—C13 | 177.83 (12) |
C9—N1—C8—N3 | 174.63 (10) | C8—S1—C14—C9 | −0.79 (9) |
Cg3 is the centroid of the C1–C6 ring. |
D—H···A | D—H | H···A | D···A | D—H···A |
C10—H10A···N3i | 0.93 | 2.57 | 3.3135 (16) | 138 |
C4—H4A···Cg3ii | 0.93 | 2.92 | 3.5851 (15) | 130 |
Symmetry codes: (i) x, −y+1/2, z−1/2; (ii) −x+1, y+1/2, −z+1/2. |
Experimental details
Crystal data | |
Chemical formula | C14H8ClN3S |
Mr | 285.74 |
Crystal system, space group | Monoclinic, P21/c |
Temperature (K) | 296 |
a, b, c (Å) | 16.9941 (13), 5.8895 (5), 12.0930 (9) |
β (°) | 91.770 (1) |
V (Å3) | 1209.77 (16) |
Z | 4 |
Radiation type | Mo Kα |
µ (mm−1) | 0.47 |
Crystal size (mm) | 0.41 × 0.31 × 0.18 |
Data collection | |
Diffractometer | Bruker APEX DUO CCD |
Absorption correction | Multi-scan (SADABS; Bruker, 2009) |
Tmin, Tmax | 0.828, 0.919 |
No. of measured, independent and observed [I > 2σ(I)] reflections | 14981, 4033, 3342 |
Rint | 0.021 |
(sin θ/λ)max (Å−1) | 0.739 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.033, 0.101, 1.02 |
No. of reflections | 4033 |
No. of parameters | 172 |
H-atom treatment | H-atom parameters constrained |
Δρmax, Δρmin (e Å−3) | 0.30, −0.23 |
Computer programs: APEX2 (Bruker, 2009), SAINT (Bruker, 2009), SHELXTL (Sheldrick, 2008) and PLATON (Spek, 2009).
Cg3 is the centroid of the C1–C6 ring. |
D—H···A | D—H | H···A | D···A | D—H···A |
C10—H10A···N3i | 0.93 | 2.57 | 3.3135 (16) | 138 |
C4—H4A···Cg3ii | 0.93 | 2.92 | 3.5851 (15) | 130 |
Symmetry codes: (i) x, −y+1/2, z−1/2; (ii) −x+1, y+1/2, −z+1/2. |
Footnotes
‡Thomson Reuters ResearcherID: A-3561-2009.
Acknowledgements
HKF and SIJA thank the Malaysian Government and Universiti Sains Malaysia for the Research University Grants (Nos.1001/PFIZIK/811160 and 1001/PFIZIK/ 811151).
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Benzothiazole derivatives have emerged as significant components in various diversified therapeutic applications. Literature review reveals that benzothiazoles and their derivatives show considerable activity including potent inhibition of human immunodeficiency virus type 1 (HIV-1), replication by HIV-1 protease inhibition (Yaseen et al.,2006), antitumor (Kini et al., 2007), anthelmintic (Munirajasekhar et al., 2011), analgesic, anti-inflammatory (Gurupadayya et al.,2008), antimalarial (Bowyer et al.,2007), antifungal (Mittal et al., 2007), anticandidous (Pozas et al.,2005) and various CNS activities (Rana et al., 2008). The present work describes the synthesis and crystal structure of the title compound, 7-Chloro-3- phenylbenzo[4,5]thiazolo[2,3-c][1,2,4]triazole, which was prepared from the reaction of 2-benzylidene-1-(6-chlorobenzo[d]thiazol-2-yl)hydrazine treated with iodobenzene diacetate.
In the title compound of (I), (Fig. 1), the benzene (C9–C14) ring makes dihedral angles of 5.59 (7) and 2.45 (6)° with the thiazole ring (S1/N1/C8/C9/C14) and the mean plane of triazole (N1–N3/C7/C8) ring, respectively. The dihedral angle between the two benzene (C1–C6 and C9–C14) rings is 64.11 (6)°.
In the crystal structure of (Fig. 2), the molecules are linked into infinite chains along the c axis by C10—H10A···N3 hydrogen bonds. π–π stacking interactions are observed between the triazole (N1–N3/C7/C8) ; centroid Cg2) and benzene (C1–C6) ; centroid Cg3) rings with a distance of Cg2···Cg3 = 3.7499 (8) Å and between triazole (N1–N3/C7/C8) ; centroid Cg2) and benzene (C9–C14) ; centroid Cg4) rings with a separation of Cg2···Cg4 = 3.5644 (8) Å. Furthermore the crystal structure is stabilized by weak C—H···π interactions (Table 1) with distance of 3.5851 (15) Å.