organic compounds
(E)-3-(2-Chlorophenyl)-2-[(2-formylphenoxy)methyl]prop-2-enenitrile
aDepartment of Physics, Bharathidasan Engineering College, Nattrampalli, Vellore 635 854, India, bDepartment of Physics, Thanthai Periyar Government Institute of Technology, Vellore 632 002, India, and cDepartment of Organic Chemistry, University of Madras, Maraimalai Campus, Chennai 600 025, India
*Correspondence e-mail: smurugavel27@gmail.com
In the title compound, C17H12ClNO2, the dihedral angle between the two benzene rings is 42.9 (1)°. There are no sgnificant intermolecular interactions.
Related literature
For background to the synthetic procedure, see: Bakthadoss & Murugan (2010). For related structures, see: Manikandan et al. (2012); Prasanna et al. (2011).
Experimental
Crystal data
|
Data collection: APEX2 (Bruker, 2004); cell APEX2 and SAINT (Bruker, 2004); data reduction: SAINT and XPREP (Bruker, 2004); program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: ORTEP-3 (Farrugia, 1997); software used to prepare material for publication: SHELXL97 and PLATON (Spek, 2009).
Supporting information
10.1107/S1600536812008410/bt5830sup1.cif
contains datablocks global, I. DOI:Structure factors: contains datablock I. DOI: 10.1107/S1600536812008410/bt5830Isup2.hkl
Supporting information file. DOI: 10.1107/S1600536812008410/bt5830Isup3.cml
A solution of salicylaldehyde (1.0 mmol, 0.122 g) and potassium carbonate (1.5 mmol, 0.207 g) in acetonitrile solvent was stirred for 15 min at room temperature. To this solution, (E)-2-(bromomethyl)-3-(2-chlorophenyl)prop-2-enenitrile (1.2 mmol, 0.308 g) was added drop wise till the addition is complete. After the completion of the reaction, as indicated by TLC, acetonitrile was evaporated. EtOAc (15 ml) and water (15 ml) were added to the crude mass. The organic layer was dried over anhydrous sodium sulfate. Removal of solvent led to a crude product, which was purified through a pad of silica gel (100–200 mesh) using ethyl acetate and hexanes (1:9) as solvents. The pure title compound was obtained as a colorless solid (0.270 g, 90% yield). Recrystallization was carried out using ethyl acetate as solvent.
H atoms were positioned geometrically, with C—H = 0.93–0.97 Å and constrained to ride on their parent atom, with Uiso(H) = 1.2Ueq(C).
The title compound is a stereodefined trisubstituted olefin, synthesized from the corresponding bromoderivative of Baylis–Hillman adduct with salicylaldehyde via simple SN2 reaction in good yields. This o-salicyladehyde derivative is an important precursor for many heterocyclic frameworks (Bakthadoss & Murugan, 2010).
The title compound comprises a benzaldehyde moiety connected to a chlorophenyl ring through a chain formed by a methoxy methyl and a propenenitrile group. The X-ray analysis confirms the molecular structure and atom connectivity as illustrated in Fig. 1.
The dihedral angle between the two aromatic rings is 42.9 (1)°. The propenenitrile (N1/C17/C8–C11) plane forms dihedral angles of 12.4 (1)° and 36.0 (1)°, respectively, with the formyl phenyl and chloro phenyl rings. The Cl1 atom deviates from the plane of attached ring by 0.019 (1) Å. The bond length C9—C17 [1.443 (2) Å] is significantly shorter than the expected value for a C—C single bond because of conjugation effects (Prasanna et al., 2011). The carbonitrile side chain (C9—C17—N1) is almost linear, with the angle around the central C atom being 178.1 (2)°. The geometric parameters of the title molecule agree well with those reported for similar structures (Manikandan et al., 2012; Prasanna et al., 2011).
For background to the synthetic procedure, see: Bakthadoss & Murugan (2010). For related structures, see: Manikandan et al. (2012); Prasanna et al. 2011).
Data collection: APEX2 (Bruker, 2004); cell
APEX2 and SAINT (Bruker, 2004); data reduction: SAINT and XPREP (Bruker, 2004); program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: ORTEP-3 (Farrugia, 1997); software used to prepare material for publication: SHELXL97 (Sheldrick, 2008) and PLATON (Spek, 2009).Fig. 1. Molecular structure of the title compound showing displacement ellipsoids at the 30% probability level. H atoms are presented as a small spheres of arbitrary radii. |
C17H12ClNO2 | Z = 2 |
Mr = 297.73 | F(000) = 308 |
Triclinic, P1 | Dx = 1.390 Mg m−3 |
Hall symbol: -P 1 | Mo Kα radiation, λ = 0.71073 Å |
a = 7.5022 (4) Å | Cell parameters from 3463 reflections |
b = 7.8301 (4) Å | θ = 2.8–28.1° |
c = 13.2379 (8) Å | µ = 0.27 mm−1 |
α = 75.470 (3)° | T = 293 K |
β = 84.696 (2)° | Block, colourless |
γ = 70.935 (2)° | 0.24 × 0.21 × 0.15 mm |
V = 711.43 (7) Å3 |
Bruker APEXII CCD diffractometer | 3433 independent reflections |
Radiation source: fine-focus sealed tube | 2685 reflections with I > 2σ(I) |
Graphite monochromator | Rint = 0.029 |
Detector resolution: 10.0 pixels mm-1 | θmax = 28.1°, θmin = 2.8° |
ω scans | h = −9→9 |
Absorption correction: multi-scan (SADABS; Sheldrick, 1996) | k = −10→10 |
Tmin = 0.937, Tmax = 0.960 | l = −17→17 |
14438 measured reflections |
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)] = 0.041 | Hydrogen site location: inferred from neighbouring sites |
wR(F2) = 0.114 | H-atom parameters constrained |
S = 1.04 | w = 1/[σ2(Fo2) + (0.053P)2 + 0.159P] where P = (Fo2 + 2Fc2)/3 |
3433 reflections | (Δ/σ)max < 0.001 |
190 parameters | Δρmax = 0.20 e Å−3 |
0 restraints | Δρmin = −0.19 e Å−3 |
C17H12ClNO2 | γ = 70.935 (2)° |
Mr = 297.73 | V = 711.43 (7) Å3 |
Triclinic, P1 | Z = 2 |
a = 7.5022 (4) Å | Mo Kα radiation |
b = 7.8301 (4) Å | µ = 0.27 mm−1 |
c = 13.2379 (8) Å | T = 293 K |
α = 75.470 (3)° | 0.24 × 0.21 × 0.15 mm |
β = 84.696 (2)° |
Bruker APEXII CCD diffractometer | 3433 independent reflections |
Absorption correction: multi-scan (SADABS; Sheldrick, 1996) | 2685 reflections with I > 2σ(I) |
Tmin = 0.937, Tmax = 0.960 | Rint = 0.029 |
14438 measured reflections |
R[F2 > 2σ(F2)] = 0.041 | 0 restraints |
wR(F2) = 0.114 | H-atom parameters constrained |
S = 1.04 | Δρmax = 0.20 e Å−3 |
3433 reflections | Δρmin = −0.19 e Å−3 |
190 parameters |
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. |
x | y | z | Uiso*/Ueq | ||
Cl1 | 0.31341 (8) | 0.23140 (7) | 0.01456 (3) | 0.07011 (17) | |
N1 | 0.1141 (2) | −0.1357 (2) | 0.40658 (12) | 0.0660 (4) | |
O1 | 0.3876 (2) | −0.21291 (18) | 0.75288 (10) | 0.0765 (4) | |
O2 | 0.28615 (15) | 0.15782 (13) | 0.48411 (7) | 0.0436 (2) | |
C1 | 0.32059 (19) | 0.22280 (18) | 0.56458 (10) | 0.0364 (3) | |
C2 | 0.3173 (2) | 0.4030 (2) | 0.55536 (12) | 0.0471 (4) | |
H2 | 0.2830 | 0.4913 | 0.4928 | 0.057* | |
C3 | 0.3655 (3) | 0.4509 (2) | 0.64002 (14) | 0.0562 (4) | |
H3 | 0.3639 | 0.5724 | 0.6336 | 0.067* | |
C4 | 0.4160 (3) | 0.3238 (2) | 0.73390 (13) | 0.0559 (4) | |
H4 | 0.4513 | 0.3578 | 0.7896 | 0.067* | |
C5 | 0.4132 (2) | 0.1464 (2) | 0.74357 (11) | 0.0474 (4) | |
H5 | 0.4442 | 0.0603 | 0.8071 | 0.057* | |
C6 | 0.36463 (19) | 0.09286 (18) | 0.66019 (10) | 0.0377 (3) | |
C7 | 0.3555 (2) | −0.0949 (2) | 0.67304 (12) | 0.0479 (4) | |
H7 | 0.3225 | −0.1251 | 0.6153 | 0.057* | |
C8 | 0.1837 (2) | 0.2928 (2) | 0.39872 (11) | 0.0428 (3) | |
H8A | 0.2576 | 0.3715 | 0.3627 | 0.051* | |
H8B | 0.0670 | 0.3705 | 0.4233 | 0.051* | |
C9 | 0.1425 (2) | 0.1907 (2) | 0.32654 (11) | 0.0407 (3) | |
C10 | 0.1257 (2) | 0.2525 (2) | 0.22304 (11) | 0.0453 (3) | |
H10 | 0.0988 | 0.1754 | 0.1876 | 0.054* | |
C11 | 0.1448 (2) | 0.4273 (2) | 0.15926 (11) | 0.0450 (3) | |
C12 | 0.2291 (2) | 0.4332 (2) | 0.05996 (12) | 0.0505 (4) | |
C13 | 0.2510 (3) | 0.5949 (3) | −0.00219 (14) | 0.0639 (5) | |
H13 | 0.3080 | 0.5953 | −0.0676 | 0.077* | |
C14 | 0.1887 (3) | 0.7543 (3) | 0.03273 (17) | 0.0725 (6) | |
H14 | 0.2040 | 0.8635 | −0.0090 | 0.087* | |
C15 | 0.1029 (3) | 0.7550 (3) | 0.12961 (16) | 0.0693 (5) | |
H15 | 0.0605 | 0.8643 | 0.1528 | 0.083* | |
C16 | 0.0804 (3) | 0.5936 (2) | 0.19183 (13) | 0.0562 (4) | |
H16 | 0.0212 | 0.5955 | 0.2566 | 0.067* | |
C17 | 0.1252 (2) | 0.0091 (2) | 0.37263 (11) | 0.0463 (3) |
U11 | U22 | U33 | U12 | U13 | U23 | |
Cl1 | 0.0911 (4) | 0.0811 (3) | 0.0395 (2) | −0.0294 (3) | 0.0038 (2) | −0.0151 (2) |
N1 | 0.0812 (11) | 0.0554 (9) | 0.0620 (9) | −0.0321 (8) | 0.0090 (8) | −0.0041 (7) |
O1 | 0.1249 (12) | 0.0518 (7) | 0.0519 (7) | −0.0394 (8) | −0.0187 (7) | 0.0113 (6) |
O2 | 0.0599 (6) | 0.0349 (5) | 0.0322 (5) | −0.0102 (4) | −0.0091 (4) | −0.0044 (4) |
C1 | 0.0398 (7) | 0.0358 (7) | 0.0329 (6) | −0.0113 (5) | 0.0013 (5) | −0.0083 (5) |
C2 | 0.0612 (9) | 0.0358 (7) | 0.0424 (8) | −0.0170 (7) | 0.0022 (7) | −0.0043 (6) |
C3 | 0.0757 (11) | 0.0435 (8) | 0.0598 (10) | −0.0286 (8) | 0.0056 (8) | −0.0197 (7) |
C4 | 0.0689 (11) | 0.0625 (10) | 0.0472 (9) | −0.0272 (8) | 0.0005 (7) | −0.0242 (8) |
C5 | 0.0562 (9) | 0.0514 (9) | 0.0344 (7) | −0.0170 (7) | −0.0019 (6) | −0.0089 (6) |
C6 | 0.0424 (7) | 0.0352 (7) | 0.0341 (7) | −0.0121 (6) | 0.0002 (5) | −0.0062 (5) |
C7 | 0.0610 (9) | 0.0390 (8) | 0.0421 (8) | −0.0176 (7) | −0.0056 (7) | −0.0025 (6) |
C8 | 0.0504 (8) | 0.0388 (7) | 0.0339 (7) | −0.0099 (6) | −0.0036 (6) | −0.0037 (5) |
C9 | 0.0417 (7) | 0.0429 (7) | 0.0354 (7) | −0.0138 (6) | 0.0005 (5) | −0.0050 (6) |
C10 | 0.0520 (8) | 0.0507 (8) | 0.0358 (7) | −0.0215 (7) | −0.0031 (6) | −0.0069 (6) |
C11 | 0.0469 (8) | 0.0512 (9) | 0.0339 (7) | −0.0172 (7) | −0.0113 (6) | 0.0017 (6) |
C12 | 0.0520 (9) | 0.0601 (10) | 0.0358 (7) | −0.0200 (7) | −0.0105 (6) | 0.0020 (7) |
C13 | 0.0614 (10) | 0.0752 (13) | 0.0447 (9) | −0.0263 (9) | −0.0070 (8) | 0.0132 (8) |
C14 | 0.0733 (13) | 0.0589 (12) | 0.0736 (13) | −0.0287 (10) | −0.0198 (10) | 0.0222 (10) |
C15 | 0.0788 (13) | 0.0479 (10) | 0.0730 (13) | −0.0153 (9) | −0.0219 (10) | 0.0017 (9) |
C16 | 0.0621 (10) | 0.0509 (9) | 0.0478 (9) | −0.0124 (8) | −0.0107 (7) | −0.0013 (7) |
C17 | 0.0510 (8) | 0.0507 (9) | 0.0366 (7) | −0.0191 (7) | 0.0028 (6) | −0.0062 (6) |
Cl1—C12 | 1.7353 (18) | C8—C9 | 1.499 (2) |
N1—C17 | 1.137 (2) | C8—H8A | 0.9700 |
O1—C7 | 1.2004 (18) | C8—H8B | 0.9700 |
O2—C1 | 1.3672 (16) | C9—C10 | 1.3367 (19) |
O2—C8 | 1.4199 (16) | C9—C17 | 1.443 (2) |
C1—C2 | 1.378 (2) | C10—C11 | 1.460 (2) |
C1—C6 | 1.3992 (18) | C10—H10 | 0.9300 |
C2—C3 | 1.379 (2) | C11—C16 | 1.395 (2) |
C2—H2 | 0.9300 | C11—C12 | 1.402 (2) |
C3—C4 | 1.378 (2) | C12—C13 | 1.376 (2) |
C3—H3 | 0.9300 | C13—C14 | 1.364 (3) |
C4—C5 | 1.369 (2) | C13—H13 | 0.9300 |
C4—H4 | 0.9300 | C14—C15 | 1.381 (3) |
C5—C6 | 1.390 (2) | C14—H14 | 0.9300 |
C5—H5 | 0.9300 | C15—C16 | 1.377 (3) |
C6—C7 | 1.460 (2) | C15—H15 | 0.9300 |
C7—H7 | 0.9300 | C16—H16 | 0.9300 |
C1—O2—C8 | 116.56 (10) | H8A—C8—H8B | 108.5 |
O2—C1—C2 | 123.98 (12) | C10—C9—C17 | 117.74 (14) |
O2—C1—C6 | 115.96 (11) | C10—C9—C8 | 125.17 (13) |
C2—C1—C6 | 120.05 (13) | C17—C9—C8 | 117.06 (12) |
C1—C2—C3 | 119.14 (14) | C9—C10—C11 | 127.43 (14) |
C1—C2—H2 | 120.4 | C9—C10—H10 | 116.3 |
C3—C2—H2 | 120.4 | C11—C10—H10 | 116.3 |
C4—C3—C2 | 121.89 (14) | C16—C11—C12 | 117.11 (14) |
C4—C3—H3 | 119.1 | C16—C11—C10 | 122.99 (14) |
C2—C3—H3 | 119.1 | C12—C11—C10 | 119.90 (14) |
C5—C4—C3 | 118.66 (15) | C13—C12—C11 | 121.65 (17) |
C5—C4—H4 | 120.7 | C13—C12—Cl1 | 118.70 (14) |
C3—C4—H4 | 120.7 | C11—C12—Cl1 | 119.63 (12) |
C4—C5—C6 | 121.20 (14) | C14—C13—C12 | 119.65 (18) |
C4—C5—H5 | 119.4 | C14—C13—H13 | 120.2 |
C6—C5—H5 | 119.4 | C12—C13—H13 | 120.2 |
C5—C6—C1 | 118.97 (13) | C13—C14—C15 | 120.53 (17) |
C5—C6—C7 | 120.44 (13) | C13—C14—H14 | 119.7 |
C1—C6—C7 | 120.58 (12) | C15—C14—H14 | 119.7 |
O1—C7—C6 | 124.58 (15) | C16—C15—C14 | 120.0 (2) |
O1—C7—H7 | 117.7 | C16—C15—H15 | 120.0 |
C6—C7—H7 | 117.7 | C14—C15—H15 | 120.0 |
O2—C8—C9 | 107.51 (11) | C15—C16—C11 | 121.09 (18) |
O2—C8—H8A | 110.2 | C15—C16—H16 | 119.5 |
C9—C8—H8A | 110.2 | C11—C16—H16 | 119.5 |
O2—C8—H8B | 110.2 | N1—C17—C9 | 178.10 (17) |
C9—C8—H8B | 110.2 | ||
C8—O2—C1—C2 | −21.16 (19) | C17—C9—C10—C11 | −177.54 (15) |
C8—O2—C1—C6 | 160.05 (12) | C8—C9—C10—C11 | 0.5 (3) |
O2—C1—C2—C3 | −176.06 (14) | C9—C10—C11—C16 | −37.5 (2) |
C6—C1—C2—C3 | 2.7 (2) | C9—C10—C11—C12 | 143.27 (17) |
C1—C2—C3—C4 | −0.3 (3) | C16—C11—C12—C13 | 1.2 (2) |
C2—C3—C4—C5 | −1.7 (3) | C10—C11—C12—C13 | −179.48 (15) |
C3—C4—C5—C6 | 1.4 (3) | C16—C11—C12—Cl1 | 179.72 (12) |
C4—C5—C6—C1 | 0.9 (2) | C10—C11—C12—Cl1 | −1.0 (2) |
C4—C5—C6—C7 | −177.70 (15) | C11—C12—C13—C14 | −0.4 (3) |
O2—C1—C6—C5 | 175.89 (12) | Cl1—C12—C13—C14 | −178.89 (14) |
C2—C1—C6—C5 | −2.9 (2) | C12—C13—C14—C15 | −0.3 (3) |
O2—C1—C6—C7 | −5.54 (19) | C13—C14—C15—C16 | 0.2 (3) |
C2—C1—C6—C7 | 175.62 (13) | C14—C15—C16—C11 | 0.7 (3) |
C5—C6—C7—O1 | 0.0 (3) | C12—C11—C16—C15 | −1.4 (2) |
C1—C6—C7—O1 | −178.53 (16) | C10—C11—C16—C15 | 179.34 (15) |
C1—O2—C8—C9 | −173.38 (11) | C10—C9—C17—N1 | 36 (6) |
O2—C8—C9—C10 | −149.36 (14) | C8—C9—C17—N1 | −142 (6) |
O2—C8—C9—C17 | 28.70 (17) |
Experimental details
Crystal data | |
Chemical formula | C17H12ClNO2 |
Mr | 297.73 |
Crystal system, space group | Triclinic, P1 |
Temperature (K) | 293 |
a, b, c (Å) | 7.5022 (4), 7.8301 (4), 13.2379 (8) |
α, β, γ (°) | 75.470 (3), 84.696 (2), 70.935 (2) |
V (Å3) | 711.43 (7) |
Z | 2 |
Radiation type | Mo Kα |
µ (mm−1) | 0.27 |
Crystal size (mm) | 0.24 × 0.21 × 0.15 |
Data collection | |
Diffractometer | Bruker APEXII CCD |
Absorption correction | Multi-scan (SADABS; Sheldrick, 1996) |
Tmin, Tmax | 0.937, 0.960 |
No. of measured, independent and observed [I > 2σ(I)] reflections | 14438, 3433, 2685 |
Rint | 0.029 |
(sin θ/λ)max (Å−1) | 0.662 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.041, 0.114, 1.04 |
No. of reflections | 3433 |
No. of parameters | 190 |
H-atom treatment | H-atom parameters constrained |
Δρmax, Δρmin (e Å−3) | 0.20, −0.19 |
Computer programs: APEX2 (Bruker, 2004), APEX2 and SAINT (Bruker, 2004), SAINT and XPREP (Bruker, 2004), SHELXS97 (Sheldrick, 2008), ORTEP-3 (Farrugia, 1997), SHELXL97 (Sheldrick, 2008) and PLATON (Spek, 2009).
Footnotes
‡Additional correspondence author, e-mail: bhakthadoss@yahoo.com.
Acknowledgements
The authors thank Dr Babu Vargheese, SAIF, IIT, Madras, India, for his help with the data collection.
References
Bakthadoss, M. & Murugan, G. (2010). Eur. J. Org. Chem. pp. 5825–5830. Web of Science CSD CrossRef Google Scholar
Bruker (2004). APEX2, SAINT and XPREP. Bruker AXS Inc., Madison, Wisconsin, U. S. A. Google Scholar
Farrugia, L. J. (1997). J. Appl. Cryst. 30, 565. CrossRef IUCr Journals Google Scholar
Manikandan, N., Murugavel, S., Kannan, D. & Bakthadoss, M. (2012). Acta Cryst. E68, o28. Web of Science CSD CrossRef IUCr Journals Google Scholar
Prasanna, C. M. S., Sethusankar, K., Rajesh, R. & Raghunathan, R. (2011). Acta Cryst. E67, o2176. Web of Science CSD CrossRef IUCr Journals Google Scholar
Sheldrick, G. M. (1996). SADABS. University of Göttingen, Germany. Google Scholar
Sheldrick, G. M. (2008). Acta Cryst. A64, 112–122. Web of Science CrossRef CAS IUCr Journals Google Scholar
Spek, A. L. (2009). Acta Cryst. D65, 148–155. Web of Science CrossRef CAS IUCr Journals 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.
The title compound is a stereodefined trisubstituted olefin, synthesized from the corresponding bromoderivative of Baylis–Hillman adduct with salicylaldehyde via simple SN2 reaction in good yields. This o-salicyladehyde derivative is an important precursor for many heterocyclic frameworks (Bakthadoss & Murugan, 2010).
The title compound comprises a benzaldehyde moiety connected to a chlorophenyl ring through a chain formed by a methoxy methyl and a propenenitrile group. The X-ray analysis confirms the molecular structure and atom connectivity as illustrated in Fig. 1.
The dihedral angle between the two aromatic rings is 42.9 (1)°. The propenenitrile (N1/C17/C8–C11) plane forms dihedral angles of 12.4 (1)° and 36.0 (1)°, respectively, with the formyl phenyl and chloro phenyl rings. The Cl1 atom deviates from the plane of attached ring by 0.019 (1) Å. The bond length C9—C17 [1.443 (2) Å] is significantly shorter than the expected value for a C—C single bond because of conjugation effects (Prasanna et al., 2011). The carbonitrile side chain (C9—C17—N1) is almost linear, with the angle around the central C atom being 178.1 (2)°. The geometric parameters of the title molecule agree well with those reported for similar structures (Manikandan et al., 2012; Prasanna et al., 2011).