organic compounds
2,5-Diphenylpenta-2,4-dienenitrile
aPG Research Department of Physics, Rajah Serfoji Government College (Autonomous), Thanjavur 613 005, Tamil Nadu, India, bDepartment of Chemistry, Annamalai University, Annamalai Nagar 608 002, Tamil Nadu, India, and cDepartment of Chemistry, Howard University, 525 College Street NW, Washington, DC 20059, USA
*Correspondence e-mail: athiru@vsnl.net
In the title compound, C17H13N, the dihedral angle between the two phenyl rings is 17.6 (1)°. An intermolecular C—H⋯N hydrogen bond is found in the also a C—H⋯π interaction involving the phenyl ring at position 5.
Related literature
For the prebiotic synthesis of biological molecules, see: Guillemin et al. (1998). For the preparation of flavonoid pigments, see: Fringuelli et al. (1994). For sexual pheromones, see: Liu et al. (1981). For the manufacture of light-emitting diodes (LEDs) with air-stable electrodes, see: Maruyama et al. (1998); Segura et al. (1999); Gómez et al. (1999).
Experimental
Crystal data
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Refinement
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Data collection: CrysAlis Pro (Oxford Diffraction, 2009); cell CrysAlis Pro; data reduction: CrysAlis Pro; 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: PLATON (Spek, 2009).
Supporting information
https://doi.org/10.1107/S160053680904481X/wn2360sup1.cif
contains datablocks global, I. DOI:Structure factors: contains datablock I. DOI: https://doi.org/10.1107/S160053680904481X/wn2360Isup2.hkl
To a mixture of benzyl cyanide (1.12 ml, 0.01 mol) and potassium hydroxide (0.66 g, 0.01 mol) in 50 ml ethanol, trans-cinnamaldehyde (1.3 ml, 0.01 mol) was added and the solution was stirred for five minutes at room temperature. The solid obtained was separated, dried and then recrystallized from absolute ethanol. The yield of isolated product was 1.81 g (82%).
H atoms were positioned geometrically and allowed to ride on their parent atoms, with C—H = 0.95 Å; Uiso(H) = 1.2Ueq(C).
Unsaturated
play a key role in many of the pathways proposed for the prebiotic synthesis of biological molecules (Guillemin et al., 1998). Arylacrylonitriles are important synthons for the synthesis of several biologically active molecules in the preparation of flavonoid pigments (Fringuelli et al., 1994) and sexual pheromones(Liu et al., 1981). Recently arylacrylonitriles have been used to obtain high polymers which can be used to manufacture light-emitting diodes (LEDs) with air-stable electrodes (Maruyama et al., 1998; Segura et al., 1999; Gómez et al., 1999).As part of our research, we have synthesized the title compound and report its π(1/2 - x, 1/2 + y, 1/2 - z) interaction involving the phenyl ring (C51—C56) at position 5 is also found.
here. In the molecule, the dihedral angle between the two phenyl rings is 17.6 (1)°. The angle N13—C12—C2 is 178.90 (13)°, indicating that atom C12 is sp hybridized. Atoms C2,C3,C4 and C5 are essentially coplanar. An intermolecular C54—H54···N13(1/2 - x, -1/2 + y, 1/2 - z) hydrogen bond is found in the In addition, a C56—H56···For the prebiotic synthesis of biological molecules, see: Guillemin et al. (1998). For the preparation of flavonoid pigments, see: Fringuelli et al. (1994). For sexual pheromones, see: Liu et al. (1981). For the manufacture of light-emitting diodes (LEDs) with air-stable electrodes, see: Maruyama et al. (1998); Segura et al. (1999); Gómez et al. (1999). Cg1 is the centroid of the C51–C56 phenyl ring.
Data collection: CrysAlis PRO (Oxford Diffraction, 2009); cell
CrysAlis PRO (Oxford Diffraction, 2009); data reduction: CrysAlis PRO (Oxford Diffraction, 2009); 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: PLATON (Spek, 2009).C17H13N | F(000) = 976 |
Mr = 231.28 | Dx = 1.251 Mg m−3 |
Monoclinic, C2/c | Melting point: 440 K |
Hall symbol: -C 2yc | Cu Kα radiation, λ = 1.54178 Å |
a = 16.9390 (5) Å | Cell parameters from 4071 reflections |
b = 7.5869 (2) Å | θ = 4.6–74.1° |
c = 19.3809 (6) Å | µ = 0.56 mm−1 |
β = 99.521 (3)° | T = 110 K |
V = 2456.42 (13) Å3 | Prism, colourless |
Z = 8 | 0.53 × 0.36 × 0.29 mm |
Oxford Diffraction Xcalibur Ruby Gemini diffractometer | 2420 independent reflections |
Radiation source: Enhance (Cu) X-ray Source | 2322 reflections with I > 2σ(I) |
Graphite monochromator | Rint = 0.014 |
Detector resolution: 10.5081 pixels mm-1 | θmax = 74.1°, θmin = 4.6° |
ω scans | h = −20→15 |
Absorption correction: multi-scan (CrysAlis PRO; Oxford Diffraction, 2009) | k = −8→9 |
Tmin = 0.713, Tmax = 1.000 | l = −23→23 |
4517 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)] = 0.044 | Hydrogen site location: inferred from neighbouring sites |
wR(F2) = 0.121 | H-atom parameters constrained |
S = 1.02 | w = 1/[σ2(Fo2) + (0.0729P)2 + 1.834P] where P = (Fo2 + 2Fc2)/3 |
2420 reflections | (Δ/σ)max = 0.001 |
163 parameters | Δρmax = 0.34 e Å−3 |
0 restraints | Δρmin = −0.22 e Å−3 |
C17H13N | V = 2456.42 (13) Å3 |
Mr = 231.28 | Z = 8 |
Monoclinic, C2/c | Cu Kα radiation |
a = 16.9390 (5) Å | µ = 0.56 mm−1 |
b = 7.5869 (2) Å | T = 110 K |
c = 19.3809 (6) Å | 0.53 × 0.36 × 0.29 mm |
β = 99.521 (3)° |
Oxford Diffraction Xcalibur Ruby Gemini diffractometer | 2420 independent reflections |
Absorption correction: multi-scan (CrysAlis PRO; Oxford Diffraction, 2009) | 2322 reflections with I > 2σ(I) |
Tmin = 0.713, Tmax = 1.000 | Rint = 0.014 |
4517 measured reflections |
R[F2 > 2σ(F2)] = 0.044 | 0 restraints |
wR(F2) = 0.121 | H-atom parameters constrained |
S = 1.02 | Δρmax = 0.34 e Å−3 |
2420 reflections | Δρmin = −0.22 e Å−3 |
163 parameters |
Geometry. Bond distances, angles etc. have been calculated using the rounded fractional coordinates. All su's are estimated from the variances of the (full) variance-covariance matrix. The cell e.s.d.'s are taken into account in the estimation of distances, angles and torsion angles |
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 > 2σ(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 | ||
N13 | 0.26391 (6) | 0.47605 (14) | −0.01895 (5) | 0.0260 (3) | |
C2 | 0.40160 (7) | 0.32134 (15) | 0.01356 (6) | 0.0195 (3) | |
C3 | 0.42079 (7) | 0.25057 (15) | 0.07831 (6) | 0.0211 (3) | |
C4 | 0.37331 (7) | 0.25955 (15) | 0.13347 (6) | 0.0209 (3) | |
C5 | 0.39654 (7) | 0.17874 (15) | 0.19524 (6) | 0.0214 (3) | |
C12 | 0.32517 (7) | 0.40883 (15) | −0.00422 (6) | 0.0204 (3) | |
C21 | 0.45270 (7) | 0.31560 (14) | −0.04165 (6) | 0.0189 (3) | |
C22 | 0.42867 (7) | 0.40207 (16) | −0.10539 (6) | 0.0224 (3) | |
C23 | 0.47643 (7) | 0.39861 (16) | −0.15733 (6) | 0.0250 (3) | |
C24 | 0.54848 (7) | 0.30767 (16) | −0.14678 (6) | 0.0245 (3) | |
C25 | 0.57313 (7) | 0.22103 (16) | −0.08366 (6) | 0.0242 (3) | |
C26 | 0.52583 (7) | 0.22532 (16) | −0.03154 (6) | 0.0224 (3) | |
C51 | 0.35609 (6) | 0.18244 (15) | 0.25646 (6) | 0.0194 (3) | |
C52 | 0.37767 (7) | 0.05962 (15) | 0.31035 (6) | 0.0212 (3) | |
C53 | 0.34045 (7) | 0.05941 (15) | 0.36908 (6) | 0.0222 (3) | |
C54 | 0.28173 (7) | 0.18303 (16) | 0.37571 (6) | 0.0230 (3) | |
C55 | 0.25983 (7) | 0.30566 (16) | 0.32272 (6) | 0.0240 (3) | |
C56 | 0.29636 (7) | 0.30601 (16) | 0.26368 (6) | 0.0219 (3) | |
H3 | 0.47024 | 0.18917 | 0.08834 | 0.0254* | |
H4 | 0.32454 | 0.32395 | 0.12601 | 0.0250* | |
H5 | 0.44452 | 0.11182 | 0.19968 | 0.0257* | |
H22 | 0.37921 | 0.46385 | −0.11333 | 0.0269* | |
H23 | 0.45960 | 0.45882 | −0.20022 | 0.0300* | |
H24 | 0.58077 | 0.30461 | −0.18245 | 0.0294* | |
H25 | 0.62245 | 0.15873 | −0.07614 | 0.0291* | |
H26 | 0.54331 | 0.16626 | 0.01150 | 0.0269* | |
H52 | 0.41827 | −0.02457 | 0.30665 | 0.0254* | |
H53 | 0.35524 | −0.02567 | 0.40485 | 0.0266* | |
H54 | 0.25673 | 0.18379 | 0.41613 | 0.0276* | |
H55 | 0.21948 | 0.39005 | 0.32695 | 0.0288* | |
H56 | 0.28080 | 0.39060 | 0.22787 | 0.0263* |
U11 | U22 | U33 | U12 | U13 | U23 | |
N13 | 0.0243 (5) | 0.0299 (6) | 0.0246 (5) | 0.0032 (4) | 0.0064 (4) | 0.0016 (4) |
C2 | 0.0198 (5) | 0.0191 (6) | 0.0198 (5) | −0.0021 (4) | 0.0038 (4) | −0.0030 (4) |
C3 | 0.0205 (6) | 0.0216 (6) | 0.0214 (6) | −0.0006 (4) | 0.0037 (4) | −0.0013 (4) |
C4 | 0.0199 (5) | 0.0219 (6) | 0.0209 (6) | −0.0005 (4) | 0.0037 (4) | −0.0009 (4) |
C5 | 0.0194 (5) | 0.0229 (6) | 0.0220 (6) | 0.0003 (4) | 0.0034 (4) | −0.0009 (4) |
C12 | 0.0243 (6) | 0.0216 (6) | 0.0161 (5) | −0.0030 (4) | 0.0060 (4) | −0.0010 (4) |
C21 | 0.0206 (5) | 0.0175 (5) | 0.0188 (5) | −0.0036 (4) | 0.0035 (4) | −0.0034 (4) |
C22 | 0.0221 (5) | 0.0240 (6) | 0.0210 (6) | 0.0010 (4) | 0.0034 (4) | −0.0015 (4) |
C23 | 0.0291 (6) | 0.0274 (6) | 0.0187 (5) | −0.0008 (5) | 0.0045 (4) | 0.0001 (4) |
C24 | 0.0267 (6) | 0.0264 (6) | 0.0228 (6) | −0.0032 (5) | 0.0109 (5) | −0.0040 (4) |
C25 | 0.0214 (6) | 0.0243 (6) | 0.0279 (6) | 0.0004 (4) | 0.0070 (5) | −0.0019 (5) |
C26 | 0.0235 (6) | 0.0230 (6) | 0.0208 (6) | −0.0001 (4) | 0.0036 (4) | 0.0013 (4) |
C51 | 0.0181 (5) | 0.0215 (6) | 0.0179 (5) | −0.0029 (4) | 0.0010 (4) | −0.0009 (4) |
C52 | 0.0188 (5) | 0.0209 (5) | 0.0228 (6) | 0.0009 (4) | 0.0002 (4) | 0.0002 (4) |
C53 | 0.0245 (6) | 0.0219 (6) | 0.0188 (5) | −0.0025 (4) | −0.0002 (4) | 0.0037 (4) |
C54 | 0.0250 (6) | 0.0258 (6) | 0.0190 (5) | −0.0039 (4) | 0.0059 (4) | −0.0008 (4) |
C55 | 0.0239 (6) | 0.0248 (6) | 0.0240 (6) | 0.0036 (5) | 0.0062 (4) | 0.0005 (4) |
C56 | 0.0229 (6) | 0.0233 (6) | 0.0192 (5) | 0.0020 (4) | 0.0023 (4) | 0.0039 (4) |
N13—C12 | 1.1491 (16) | C53—C54 | 1.3885 (17) |
C2—C3 | 1.3542 (16) | C54—C55 | 1.3899 (17) |
C2—C12 | 1.4450 (17) | C55—C56 | 1.3880 (16) |
C2—C21 | 1.4841 (17) | C3—H3 | 0.9500 |
C3—C4 | 1.4418 (17) | C4—H4 | 0.9500 |
C4—C5 | 1.3447 (16) | C5—H5 | 0.9500 |
C5—C51 | 1.4653 (16) | C22—H22 | 0.9500 |
C21—C22 | 1.3985 (16) | C23—H23 | 0.9500 |
C21—C26 | 1.4006 (17) | C24—H24 | 0.9500 |
C22—C23 | 1.3921 (17) | C25—H25 | 0.9500 |
C23—C24 | 1.3874 (17) | C26—H26 | 0.9500 |
C24—C25 | 1.3907 (16) | C52—H52 | 0.9500 |
C25—C26 | 1.3897 (17) | C53—H53 | 0.9500 |
C51—C52 | 1.4023 (16) | C54—H54 | 0.9500 |
C51—C56 | 1.4032 (16) | C55—H55 | 0.9500 |
C52—C53 | 1.3894 (16) | C56—H56 | 0.9500 |
N13···C12i | 3.3510 (16) | C56···H22vii | 3.1000 |
N13···C54ii | 3.3396 (16) | H3···C26 | 2.6600 |
N13···C4i | 3.4376 (15) | H3···H5 | 2.3500 |
N13···C54iii | 3.3883 (15) | H3···H26 | 2.1000 |
N13···H54ii | 2.8600 | H4···C12 | 2.6100 |
N13···H54iii | 2.6100 | H4···C56 | 2.7900 |
N13···H25iv | 2.8300 | H4···H56 | 2.2800 |
N13···H22 | 2.8900 | H5···H3 | 2.3500 |
C3···C25v | 3.5805 (17) | H5···H52 | 2.4200 |
C3···C23vi | 3.4028 (17) | H5···C52x | 3.0800 |
C4···N13i | 3.4376 (15) | H5···H5x | 2.4700 |
C4···C24vi | 3.5341 (17) | H5···H52x | 2.5700 |
C12···N13i | 3.3510 (16) | H22···N13 | 2.8900 |
C12···C25vi | 3.5755 (17) | H22···C12 | 2.4700 |
C12···C12i | 3.5296 (17) | H22···C55ii | 2.8000 |
C21···C21vi | 3.4853 (16) | H22···C56ii | 3.1000 |
C23···C3vi | 3.4028 (17) | H23···H23xi | 2.5400 |
C24···C4vi | 3.5341 (17) | H23···H24xi | 2.5500 |
C25···C12vi | 3.5755 (17) | H24···H23xi | 2.5500 |
C25···C3v | 3.5805 (17) | H25···N13xii | 2.8300 |
C54···N13vii | 3.3396 (16) | H25···H54xiii | 2.6000 |
C54···N13viii | 3.3883 (15) | H26···C3 | 2.7000 |
C2···H53ix | 3.0900 | H26···H3 | 2.1000 |
C3···H26 | 2.7000 | H26···C53x | 2.9000 |
C4···H56 | 2.7800 | H52···H5 | 2.4200 |
C5···H55viii | 2.9300 | H52···H5x | 2.5700 |
C12···H22 | 2.4700 | H52···C23xiv | 3.0500 |
C12···H4 | 2.6100 | H53···C2xiv | 3.0900 |
C21···H53ix | 2.8400 | H53···C21xiv | 2.8400 |
C23···H52ix | 3.0500 | H54···N13vii | 2.8600 |
C26···H3 | 2.6600 | H54···N13viii | 2.6100 |
C51···H55viii | 2.9100 | H54···H25xv | 2.6000 |
C52···H5x | 3.0800 | H55···C5iii | 2.9300 |
C52···H56viii | 2.9600 | H55···C51iii | 2.9100 |
C53···H56viii | 2.8500 | H56···C4 | 2.7800 |
C53···H26x | 2.9000 | H56···H4 | 2.2800 |
C54···H56viii | 3.0600 | H56···C52iii | 2.9600 |
C55···H22vii | 2.8000 | H56···C53iii | 2.8500 |
C56···H4 | 2.7900 | H56···C54iii | 3.0600 |
C3—C2—C12 | 118.13 (11) | C3—C4—H4 | 119.00 |
C3—C2—C21 | 125.26 (11) | C5—C4—H4 | 119.00 |
C12—C2—C21 | 116.61 (10) | C4—C5—H5 | 116.00 |
C2—C3—C4 | 126.20 (11) | C51—C5—H5 | 116.00 |
C3—C4—C5 | 121.44 (11) | C21—C22—H22 | 120.00 |
C4—C5—C51 | 127.23 (11) | C23—C22—H22 | 120.00 |
N13—C12—C2 | 178.90 (13) | C22—C23—H23 | 120.00 |
C2—C21—C22 | 120.26 (10) | C24—C23—H23 | 120.00 |
C2—C21—C26 | 121.42 (10) | C23—C24—H24 | 120.00 |
C22—C21—C26 | 118.32 (11) | C25—C24—H24 | 120.00 |
C21—C22—C23 | 120.72 (11) | C24—C25—H25 | 120.00 |
C22—C23—C24 | 120.34 (11) | C26—C25—H25 | 120.00 |
C23—C24—C25 | 119.57 (11) | C21—C26—H26 | 120.00 |
C24—C25—C26 | 120.20 (11) | C25—C26—H26 | 120.00 |
C21—C26—C25 | 120.84 (11) | C51—C52—H52 | 120.00 |
C5—C51—C52 | 119.42 (10) | C53—C52—H52 | 120.00 |
C5—C51—C56 | 122.34 (10) | C52—C53—H53 | 120.00 |
C52—C51—C56 | 118.24 (10) | C54—C53—H53 | 120.00 |
C51—C52—C53 | 120.88 (11) | C53—C54—H54 | 120.00 |
C52—C53—C54 | 120.27 (11) | C55—C54—H54 | 120.00 |
C53—C54—C55 | 119.44 (11) | C54—C55—H55 | 120.00 |
C54—C55—C56 | 120.63 (11) | C56—C55—H55 | 120.00 |
C51—C56—C55 | 120.54 (11) | C51—C56—H56 | 120.00 |
C2—C3—H3 | 117.00 | C55—C56—H56 | 120.00 |
C4—C3—H3 | 117.00 | ||
C12—C2—C3—C4 | −2.66 (18) | C22—C21—C26—C25 | −0.32 (17) |
C21—C2—C3—C4 | 177.83 (11) | C21—C22—C23—C24 | 0.57 (18) |
C3—C2—C21—C22 | −176.35 (12) | C22—C23—C24—C25 | −0.55 (18) |
C3—C2—C21—C26 | 3.30 (18) | C23—C24—C25—C26 | 0.10 (19) |
C12—C2—C21—C22 | 4.13 (16) | C24—C25—C26—C21 | 0.34 (18) |
C12—C2—C21—C26 | −176.22 (11) | C5—C51—C52—C53 | −179.94 (11) |
C2—C3—C4—C5 | 177.44 (12) | C56—C51—C52—C53 | 0.50 (17) |
C3—C4—C5—C51 | 177.45 (11) | C5—C51—C56—C55 | −179.63 (11) |
C4—C5—C51—C52 | 165.27 (12) | C52—C51—C56—C55 | −0.08 (17) |
C4—C5—C51—C56 | −15.19 (19) | C51—C52—C53—C54 | −0.85 (18) |
C2—C21—C22—C23 | 179.52 (11) | C52—C53—C54—C55 | 0.76 (18) |
C26—C21—C22—C23 | −0.14 (17) | C53—C54—C55—C56 | −0.34 (18) |
C2—C21—C26—C25 | −179.97 (10) | C54—C55—C56—C51 | 0.00 (18) |
Symmetry codes: (i) −x+1/2, −y+1/2, −z; (ii) x, −y+1, z−1/2; (iii) −x+1/2, y+1/2, −z+1/2; (iv) x−1/2, y+1/2, z; (v) −x+1, −y, −z; (vi) −x+1, −y+1, −z; (vii) x, −y+1, z+1/2; (viii) −x+1/2, y−1/2, −z+1/2; (ix) x, −y, z−1/2; (x) −x+1, y, −z+1/2; (xi) −x+1, y, −z−1/2; (xii) x+1/2, y−1/2, z; (xiii) x+1/2, −y+1/2, z−1/2; (xiv) x, −y, z+1/2; (xv) x−1/2, −y+1/2, z+1/2. |
D—H···A | D—H | H···A | D···A | D—H···A |
C54—H54···N13viii | 0.95 | 2.61 | 3.388 (2) | 139 |
C56—H56···Cg1iii | 0.95 | 2.83 | 3.657 (1) | 146 |
Symmetry codes: (iii) −x+1/2, y+1/2, −z+1/2; (viii) −x+1/2, y−1/2, −z+1/2. |
Experimental details
Crystal data | |
Chemical formula | C17H13N |
Mr | 231.28 |
Crystal system, space group | Monoclinic, C2/c |
Temperature (K) | 110 |
a, b, c (Å) | 16.9390 (5), 7.5869 (2), 19.3809 (6) |
β (°) | 99.521 (3) |
V (Å3) | 2456.42 (13) |
Z | 8 |
Radiation type | Cu Kα |
µ (mm−1) | 0.56 |
Crystal size (mm) | 0.53 × 0.36 × 0.29 |
Data collection | |
Diffractometer | Oxford Diffraction Xcalibur Ruby Gemini |
Absorption correction | Multi-scan (CrysAlis PRO; Oxford Diffraction, 2009) |
Tmin, Tmax | 0.713, 1.000 |
No. of measured, independent and observed [I > 2σ(I)] reflections | 4517, 2420, 2322 |
Rint | 0.014 |
(sin θ/λ)max (Å−1) | 0.624 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.044, 0.121, 1.02 |
No. of reflections | 2420 |
No. of parameters | 163 |
H-atom treatment | H-atom parameters constrained |
Δρmax, Δρmin (e Å−3) | 0.34, −0.22 |
Computer programs: CrysAlis PRO (Oxford Diffraction, 2009), SHELXS97 (Sheldrick, 2008), SHELXL97 (Sheldrick, 2008), ORTEP-3 (Farrugia, 1997), PLATON (Spek, 2009).
D—H···A | D—H | H···A | D···A | D—H···A |
C54—H54···N13i | 0.95 | 2.61 | 3.388 (2) | 139 |
C56—H56···Cg1ii | 0.95 | 2.83 | 3.657 (1) | 146 |
Symmetry codes: (i) −x+1/2, y−1/2, −z+1/2; (ii) −x+1/2, y+1/2, −z+1/2. |
Acknowledgements
RJB acknowledges the NSF MRI program (grant No. CHE-0619278) for funds to purchase an X-ray diffractometer.
References
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Unsaturated nitriles play a key role in many of the pathways proposed for the prebiotic synthesis of biological molecules (Guillemin et al., 1998). Arylacrylonitriles are important synthons for the synthesis of several biologically active molecules in the preparation of flavonoid pigments (Fringuelli et al., 1994) and sexual pheromones(Liu et al., 1981). Recently arylacrylonitriles have been used to obtain high electron affinity polymers which can be used to manufacture light-emitting diodes (LEDs) with air-stable electrodes (Maruyama et al., 1998; Segura et al., 1999; Gómez et al., 1999).
As part of our research, we have synthesized the title compound and report its crystal structure here. In the molecule, the dihedral angle between the two phenyl rings is 17.6 (1)°. The angle N13—C12—C2 is 178.90 (13)°, indicating that atom C12 is sp hybridized. Atoms C2,C3,C4 and C5 are essentially coplanar. An intermolecular C54—H54···N13(1/2 - x, -1/2 + y, 1/2 - z) hydrogen bond is found in the crystal structure. In addition, a C56—H56···π(1/2 - x, 1/2 + y, 1/2 - z) interaction involving the phenyl ring (C51—C56) at position 5 is also found.