organic compounds
6-Bromo-N-(6-bromopyridin-2-yl)-N-[4-(2,3-dihydrothieno[3,4-b][1,4]dioxin-5-yl)phenyl]pyridin-2-amine
aDepartment of Chemistry, The University of Texas at Austin, 105 E 24th Street, Stop A5300, Austin, Texas 78712, USA
*Correspondence e-mail: bholliday@cm.utexas.edu
In the title molecule, C22H15Br2N3O2S, the central benzene ring forms dihedral angles of 12.39 (17), 56.66 (17) and 74.71 (19)°, respectively, with the mean planes of the thiophene and two pyridine rings. The dioxane ring is in a half-chair conformation. An intramolecular C—H⋯O hydrogen forms an S(6) ring. The amine N atom is sp2-hybridized.
Related literature
For related structures, see: Chen et al. (2011); Sotzing & Reynolds (1996); de Betterncourt-Dias et al. (2011). For applications of simliar compounds, see: Chahma et al. (2007); Roncali et al. (2005). For the synthesis of the starting material 4-(2,3-dihydrothieno[3,4-b][1,4]dioxin-5-yl)aniline, see: Trippé-Allard & Lacroix (2013). For the calculation of the functionality of the amine group in terms of see: Allen et al. (1995). For hydrogen-bond graph-set motifs, see: Bernstein et al. (1995).
Experimental
Crystal data
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Data collection: CrystalClear (Rigaku, 2008); cell CrystalClear; data reduction: CrystalClear; program(s) used to solve structure: SIR97 (Altomare et al., 1999); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008) within WinGX (Farrugia, 2012); molecular graphics: ORTEP-3 for Windows (Farrugia, 2012) and POV-RAY (Cason, 2004); software used to prepare material for publication: SHELXL97 and publCIF (Westrip, 2010).
Supporting information
https://doi.org/10.1107/S1600536814013191/lh5709sup1.cif
contains datablock I. DOI:Structure factors: contains datablock I. DOI: https://doi.org/10.1107/S1600536814013191/lh5709Isup2.hkl
Supporting information file. DOI: https://doi.org/10.1107/S1600536814013191/lh5709Isup3.cml
In an air-free glovebox tris(dibenzylideneacetone)dipalladium(0) (0.488 g, 0.5 mmol) was added to a dry schlenk flask. The reaction flask was pumped out, dry toluene was transferred into the flask by cannula and 4-(2,3-dihydrothieno[3,4-b][1,4]dioxin-5-yl)aniline, synthesized from Trippé-Allard & Lacroix (2013), (4.508 g, 19.3 mmol), 2,6-dibromopyridine (9.387 g, 39.6 mmol), 1,1'-bis(diphenylphosphino)ferrocene (0.632 g, 1.1 mmol), and sodium tert-butoxide (3.989 g, 41.5 mmol) were added to the solution. The solution was refluxed at 393 K for 20 h. The solution was cooled to room temperature and the toluene was removed by rotoevaporation. The product was extracted into CH2Cl2 (x3) washing with H2O. The crude solid was purified by silica gel δ: 7.72 (d, 2H, J = 8.4), 7.36 (t, 2H, J = 7.9), 7.15 (d, 2H, J = 8.4), 7.09 (d, 2H, J = 5.1), 6.93 (d, 2H, J = 8.4), 6.30 (s, 1H), 4.31 – 4.25 (m, 4H), 13C{1H} NMR (75 MHz, CDCl3) δ: 156.9, 142.2, 141.5, 139.6, 139.4, 138.3, 131.51, 127.2, 122.1, 116.6, 114.9, 97.9, 64.8, 64.4. Anal. calcd. for C22H15Br2N3O2S: C, 48.46; H, 2.77; N, 7.71. Found: C, 48.63; H, 2.51; N, 7.59.
with 45% ethyl acetate: 55% hexanes by volume (Rf = 0.59) to yield a bright yellow solid (2.298 g, 21.8%). Crystals suitable for X-ray diffraction were obtained by slow evaporation from a 45% ethyl acetate, 55% hexanes solution (v/v). m.p. 433 K. 1H NMR (300 MHz, CDCl3)All H atoms were positioned geometrically and refined using a riding model, with C—H = 0.93–0.97 Å and with Uiso(H) = 1.2 times Ueq(C).
The optical and electronic properties of 3,4-ethylenedioxythiophene (EDOT) containing compounds have spurred the development of materials for use in light-emitting devices, non-linear optics, and organic semi-conductors (Roncali et al., 2005). Triphenylamines with EDOT substituants have been utilized in the development of electroactive polymers with high redox stabilities (Chahma et al., 2007). The title compound is a promising precurser to branched unsymmetric electroactive polymers.
The geometry of the EDOT moiety is similar to other ethylenedioxythiophene containing compounds reported in the literature (Chen et al., 2011; Sotzing & Reynolds, 1996). The dihedral angle between the thiophene and central benzene is 12.39 (17)°. The two pyridine rings are twisted out of plane of the benzene ring. The dihedral angle between the benzene ring and the pyridine ring containing N1 is 56.66 (17)°, and the dihedral angle between the benzene ring and the pyridine ring containing N2 is 74.71 (19)°. An intramolecular C—H···O hydrogen forms an S(6) ring (Bernstein et al., 1995).
The pyramidality of the amine functionality, measured by χn, the angle between the C10—N2 vector and the N2/C13/C18 plane, described by Allen et al. (1995), is 2.3 (6)°, indicating that the of the nitrogen atom is mainly sp2 (sp2 χn ≈ 0°, sp3 χn ≈ 60°).
For related structures, see: Chen et al. (2011); Sotzing & Reynolds (1996); de Betterncourt-Dias et al. (2011). For applications of simliar compounds, see: Chahma et al. (2007); Roncali et al. (2005). For the synthesis of the starting material 4-(2,3-dihydrothieno[3,4-b][1,4]dioxin-5-yl)aniline, see: Trippé-Allard & Lacroix (2013). For the calculation of the functionality of the amine group in terms of
see: Allen et al. (1995). For hydrogen-bond graph-set motifs, see: (Bernstein et al. 1995).Data collection: CrystalClear (Rigaku, 2008); cell
CrystalClear (Rigaku, 2008); data reduction: CrystalClear (Rigaku, 2008); program(s) used to solve structure: SIR97 (Altomare et al., 1999); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008) within WinGX (Farrugia, 2012); molecular graphics: ORTEP-3 for Windows (Farrugia, 2012) and POV-RAY (Cason, 2004); software used to prepare material for publication: SHELXL97 (Sheldrick, 2008) and publCIF (Westrip, 2010).Fig. 1. Molecular structure of the title compound. Ellipsoids are drawn at the 50% probability level. |
C22H15Br2N3O2S | Z = 2 |
Mr = 545.25 | F(000) = 540 |
Triclinic, P1 | Dx = 1.810 Mg m−3 |
Hall symbol: -P 1 | Mo Kα radiation, λ = 0.71075 Å |
a = 4.483 (4) Å | Cell parameters from 3281 reflections |
b = 12.151 (9) Å | θ = 1.7–27.7° |
c = 18.958 (13) Å | µ = 4.18 mm−1 |
α = 75.807 (18)° | T = 100 K |
β = 87.67 (3)° | Prism, colorless |
γ = 89.62 (2)° | 0.22 × 0.03 × 0.03 mm |
V = 1000.3 (13) Å3 |
Rigaku Saturn724+ diffractometer | 3521 independent reflections |
Radiation source: fine-focus sealed tube | 2732 reflections with I > 2σ(I) |
Graphite monochromator | Rint = 0.079 |
Detector resolution: 28.5714 pixels mm-1 | θmax = 25.0°, θmin = 1.7° |
dtprofit.ref scans | h = −5→5 |
Absorption correction: multi-scan (ABSCOR; Higashi, 2001) | k = −14→14 |
Tmin = 0.563, Tmax = 1.000 | l = −22→22 |
13439 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)] = 0.051 | Hydrogen site location: inferred from neighbouring sites |
wR(F2) = 0.128 | H-atom parameters constrained |
S = 1.00 | w = 1/[σ2(Fo2) + (0.0638P)2] where P = (Fo2 + 2Fc2)/3 |
3521 reflections | (Δ/σ)max = 0.001 |
271 parameters | Δρmax = 1.06 e Å−3 |
0 restraints | Δρmin = −0.83 e Å−3 |
C22H15Br2N3O2S | γ = 89.62 (2)° |
Mr = 545.25 | V = 1000.3 (13) Å3 |
Triclinic, P1 | Z = 2 |
a = 4.483 (4) Å | Mo Kα radiation |
b = 12.151 (9) Å | µ = 4.18 mm−1 |
c = 18.958 (13) Å | T = 100 K |
α = 75.807 (18)° | 0.22 × 0.03 × 0.03 mm |
β = 87.67 (3)° |
Rigaku Saturn724+ diffractometer | 3521 independent reflections |
Absorption correction: multi-scan (ABSCOR; Higashi, 2001) | 2732 reflections with I > 2σ(I) |
Tmin = 0.563, Tmax = 1.000 | Rint = 0.079 |
13439 measured reflections |
R[F2 > 2σ(F2)] = 0.051 | 0 restraints |
wR(F2) = 0.128 | H-atom parameters constrained |
S = 1.00 | Δρmax = 1.06 e Å−3 |
3521 reflections | Δρmin = −0.83 e Å−3 |
271 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 | ||
C1 | 0.4149 (12) | 0.8677 (5) | 0.3436 (3) | 0.0254 (13) | |
H1 | 0.4019 | 0.9100 | 0.2958 | 0.030* | |
C2 | 0.5672 (11) | 0.7710 (5) | 0.3635 (3) | 0.0223 (12) | |
C3 | 0.7454 (12) | 0.6007 (5) | 0.3458 (3) | 0.0244 (13) | |
H3A | 0.8736 | 0.5675 | 0.3141 | 0.029* | |
H3B | 0.5491 | 0.5663 | 0.3489 | 0.029* | |
C4 | 0.8723 (12) | 0.5774 (5) | 0.4210 (3) | 0.0238 (12) | |
H4A | 0.8982 | 0.4962 | 0.4395 | 0.029* | |
H4B | 1.0666 | 0.6133 | 0.4177 | 0.029* | |
C5 | 0.5503 (10) | 0.7210 (5) | 0.4403 (3) | 0.0188 (11) | |
C6 | 0.3812 (11) | 0.7836 (5) | 0.4784 (3) | 0.0214 (12) | |
C7 | 0.3032 (11) | 0.7649 (4) | 0.5558 (3) | 0.0181 (11) | |
C8 | 0.0814 (12) | 0.8290 (5) | 0.5805 (3) | 0.0238 (12) | |
H8 | −0.0179 | 0.8841 | 0.5467 | 0.029* | |
C9 | 0.0052 (12) | 0.8131 (5) | 0.6533 (3) | 0.0235 (12) | |
H9 | −0.1470 | 0.8560 | 0.6680 | 0.028* | |
C10 | 0.1546 (11) | 0.7335 (5) | 0.7049 (3) | 0.0216 (12) | |
C11 | 0.3738 (11) | 0.6680 (5) | 0.6820 (3) | 0.0215 (12) | |
H11 | 0.4733 | 0.6138 | 0.7163 | 0.026* | |
C12 | 0.4468 (11) | 0.6822 (5) | 0.6089 (3) | 0.0208 (12) | |
H12 | 0.5927 | 0.6366 | 0.5945 | 0.025* | |
C13 | 0.0144 (11) | 0.8117 (5) | 0.8102 (3) | 0.0201 (12) | |
C14 | 0.1319 (11) | 0.9198 (5) | 0.7798 (3) | 0.0248 (13) | |
H14 | 0.2632 | 0.9325 | 0.7393 | 0.030* | |
C15 | 0.0499 (12) | 1.0077 (5) | 0.8109 (3) | 0.0264 (13) | |
H15 | 0.1216 | 1.0809 | 0.7910 | 0.032* | |
C16 | −0.1433 (12) | 0.9848 (5) | 0.8729 (3) | 0.0257 (13) | |
H16 | −0.2045 | 1.0416 | 0.8954 | 0.031* | |
C17 | −0.2361 (11) | 0.8761 (5) | 0.8984 (3) | 0.0235 (12) | |
C18 | 0.0708 (11) | 0.6057 (5) | 0.8273 (3) | 0.0204 (12) | |
C19 | 0.2220 (12) | 0.5796 (5) | 0.8916 (3) | 0.0230 (12) | |
H19 | 0.3344 | 0.6341 | 0.9057 | 0.028* | |
C20 | 0.2000 (11) | 0.4706 (5) | 0.9338 (3) | 0.0239 (12) | |
H20 | 0.2952 | 0.4508 | 0.9778 | 0.029* | |
C21 | 0.0373 (11) | 0.3899 (5) | 0.9114 (3) | 0.0221 (12) | |
H21 | 0.0175 | 0.3157 | 0.9394 | 0.027* | |
C22 | −0.0947 (11) | 0.4255 (5) | 0.8448 (3) | 0.0214 (12) | |
N1 | −0.1728 (9) | 0.7893 (4) | 0.8702 (2) | 0.0208 (10) | |
N2 | 0.0834 (10) | 0.7185 (4) | 0.7811 (2) | 0.0223 (10) | |
N3 | −0.0829 (9) | 0.5300 (4) | 0.8032 (2) | 0.0208 (10) | |
O1 | 0.7239 (8) | 0.7215 (3) | 0.31571 (18) | 0.0250 (9) | |
O2 | 0.6761 (8) | 0.6202 (3) | 0.47078 (18) | 0.0228 (9) | |
S1 | 0.2461 (3) | 0.90420 (13) | 0.41770 (7) | 0.0266 (3) | |
Br1 | −0.49638 (12) | 0.83856 (5) | 0.98380 (3) | 0.02763 (19) | |
Br2 | −0.31232 (12) | 0.31910 (5) | 0.80909 (3) | 0.02536 (18) |
U11 | U22 | U33 | U12 | U13 | U23 | |
C1 | 0.042 (3) | 0.024 (3) | 0.009 (3) | 0.000 (3) | 0.005 (2) | −0.002 (2) |
C2 | 0.028 (3) | 0.026 (3) | 0.017 (3) | −0.004 (2) | 0.004 (2) | −0.014 (2) |
C3 | 0.033 (3) | 0.025 (3) | 0.019 (3) | 0.002 (2) | 0.001 (2) | −0.014 (3) |
C4 | 0.028 (3) | 0.025 (3) | 0.022 (3) | 0.002 (2) | 0.001 (2) | −0.012 (2) |
C5 | 0.018 (3) | 0.026 (3) | 0.015 (3) | 0.000 (2) | 0.0007 (19) | −0.009 (2) |
C6 | 0.026 (3) | 0.023 (3) | 0.018 (3) | 0.002 (2) | −0.002 (2) | −0.010 (2) |
C7 | 0.025 (3) | 0.019 (3) | 0.011 (2) | 0.001 (2) | 0.001 (2) | −0.006 (2) |
C8 | 0.029 (3) | 0.024 (3) | 0.019 (3) | 0.007 (2) | −0.003 (2) | −0.006 (2) |
C9 | 0.032 (3) | 0.021 (3) | 0.018 (3) | 0.004 (2) | 0.009 (2) | −0.009 (2) |
C10 | 0.026 (3) | 0.024 (3) | 0.018 (3) | −0.003 (2) | 0.001 (2) | −0.011 (2) |
C11 | 0.029 (3) | 0.022 (3) | 0.015 (3) | 0.000 (2) | −0.001 (2) | −0.006 (2) |
C12 | 0.025 (3) | 0.020 (3) | 0.018 (3) | 0.004 (2) | 0.003 (2) | −0.007 (2) |
C13 | 0.028 (3) | 0.019 (3) | 0.014 (3) | 0.001 (2) | 0.001 (2) | −0.008 (2) |
C14 | 0.029 (3) | 0.027 (3) | 0.020 (3) | −0.001 (2) | 0.005 (2) | −0.010 (3) |
C15 | 0.033 (3) | 0.024 (3) | 0.022 (3) | −0.005 (2) | 0.002 (2) | −0.006 (2) |
C16 | 0.038 (3) | 0.023 (3) | 0.021 (3) | 0.001 (3) | 0.004 (2) | −0.015 (3) |
C17 | 0.025 (3) | 0.033 (4) | 0.017 (3) | 0.006 (2) | −0.003 (2) | −0.016 (3) |
C18 | 0.022 (3) | 0.025 (3) | 0.018 (3) | 0.005 (2) | 0.001 (2) | −0.013 (2) |
C19 | 0.024 (3) | 0.033 (3) | 0.016 (3) | 0.003 (2) | −0.001 (2) | −0.014 (3) |
C20 | 0.028 (3) | 0.027 (3) | 0.018 (3) | 0.003 (2) | −0.001 (2) | −0.008 (3) |
C21 | 0.025 (3) | 0.022 (3) | 0.018 (3) | 0.002 (2) | 0.001 (2) | −0.003 (2) |
C22 | 0.029 (3) | 0.023 (3) | 0.015 (3) | −0.001 (2) | 0.008 (2) | −0.011 (2) |
N1 | 0.027 (2) | 0.021 (3) | 0.016 (2) | 0.0047 (19) | −0.0002 (18) | −0.009 (2) |
N2 | 0.032 (2) | 0.021 (3) | 0.017 (2) | −0.001 (2) | 0.0055 (18) | −0.011 (2) |
N3 | 0.029 (2) | 0.022 (3) | 0.013 (2) | 0.000 (2) | 0.0068 (18) | −0.009 (2) |
O1 | 0.035 (2) | 0.030 (2) | 0.0138 (18) | −0.0010 (17) | 0.0057 (15) | −0.0128 (17) |
O2 | 0.031 (2) | 0.027 (2) | 0.0130 (18) | 0.0098 (17) | 0.0015 (15) | −0.0090 (17) |
S1 | 0.0396 (8) | 0.0243 (8) | 0.0158 (7) | 0.0065 (6) | 0.0026 (6) | −0.0057 (6) |
Br1 | 0.0357 (3) | 0.0294 (4) | 0.0196 (3) | 0.0038 (3) | 0.0076 (2) | −0.0111 (3) |
Br2 | 0.0329 (3) | 0.0260 (4) | 0.0200 (3) | −0.0033 (2) | 0.0029 (2) | −0.0115 (2) |
C1—C2 | 1.335 (7) | C11—H11 | 0.9300 |
C1—S1 | 1.719 (5) | C12—H12 | 0.9300 |
C1—H1 | 0.9300 | C13—N1 | 1.360 (6) |
C2—O1 | 1.374 (6) | C13—C14 | 1.396 (8) |
C2—C5 | 1.433 (7) | C13—N2 | 1.403 (7) |
C3—O1 | 1.442 (6) | C14—C15 | 1.382 (8) |
C3—C4 | 1.517 (7) | C14—H14 | 0.9300 |
C3—H3A | 0.9700 | C15—C16 | 1.403 (7) |
C3—H3B | 0.9700 | C15—H15 | 0.9300 |
C4—O2 | 1.450 (6) | C16—C17 | 1.353 (8) |
C4—H4A | 0.9700 | C16—H16 | 0.9300 |
C4—H4B | 0.9700 | C17—N1 | 1.318 (7) |
C5—O2 | 1.351 (6) | C17—Br1 | 1.919 (5) |
C5—C6 | 1.376 (7) | C18—N3 | 1.330 (7) |
C6—C7 | 1.457 (7) | C18—C19 | 1.386 (7) |
C6—S1 | 1.748 (5) | C18—N2 | 1.435 (7) |
C7—C8 | 1.394 (7) | C19—C20 | 1.371 (8) |
C7—C12 | 1.409 (7) | C19—H19 | 0.9300 |
C8—C9 | 1.375 (7) | C20—C21 | 1.384 (8) |
C8—H8 | 0.9300 | C20—H20 | 0.9300 |
C9—C10 | 1.386 (7) | C21—C22 | 1.386 (7) |
C9—H9 | 0.9300 | C21—H21 | 0.9300 |
C10—C11 | 1.382 (7) | C22—N3 | 1.319 (7) |
C10—N2 | 1.433 (6) | C22—Br2 | 1.893 (6) |
C11—C12 | 1.380 (7) | ||
C2—C1—S1 | 111.4 (4) | C11—C12—H12 | 119.6 |
C2—C1—H1 | 124.3 | C7—C12—H12 | 119.6 |
S1—C1—H1 | 124.3 | N1—C13—C14 | 122.3 (5) |
C1—C2—O1 | 124.1 (5) | N1—C13—N2 | 115.4 (5) |
C1—C2—C5 | 113.8 (5) | C14—C13—N2 | 122.3 (5) |
O1—C2—C5 | 122.1 (5) | C15—C14—C13 | 118.9 (5) |
O1—C3—C4 | 109.9 (4) | C15—C14—H14 | 120.6 |
O1—C3—H3A | 109.7 | C13—C14—H14 | 120.6 |
C4—C3—H3A | 109.7 | C14—C15—C16 | 118.9 (6) |
O1—C3—H3B | 109.7 | C14—C15—H15 | 120.5 |
C4—C3—H3B | 109.7 | C16—C15—H15 | 120.5 |
H3A—C3—H3B | 108.2 | C17—C16—C15 | 116.7 (5) |
O2—C4—C3 | 111.0 (4) | C17—C16—H16 | 121.6 |
O2—C4—H4A | 109.4 | C15—C16—H16 | 121.6 |
C3—C4—H4A | 109.4 | N1—C17—C16 | 127.3 (5) |
O2—C4—H4B | 109.4 | N1—C17—Br1 | 113.8 (4) |
C3—C4—H4B | 109.4 | C16—C17—Br1 | 118.9 (4) |
H4A—C4—H4B | 108.0 | N3—C18—C19 | 123.6 (5) |
O2—C5—C6 | 124.2 (5) | N3—C18—N2 | 116.0 (4) |
O2—C5—C2 | 122.8 (4) | C19—C18—N2 | 120.3 (5) |
C6—C5—C2 | 112.9 (5) | C20—C19—C18 | 117.6 (5) |
C5—C6—C7 | 131.5 (5) | C20—C19—H19 | 121.2 |
C5—C6—S1 | 109.3 (4) | C18—C19—H19 | 121.2 |
C7—C6—S1 | 119.2 (4) | C19—C20—C21 | 120.5 (5) |
C8—C7—C12 | 117.1 (5) | C19—C20—H20 | 119.8 |
C8—C7—C6 | 120.9 (4) | C21—C20—H20 | 119.8 |
C12—C7—C6 | 122.0 (4) | C20—C21—C22 | 116.3 (5) |
C9—C8—C7 | 121.9 (5) | C20—C21—H21 | 121.8 |
C9—C8—H8 | 119.0 | C22—C21—H21 | 121.8 |
C7—C8—H8 | 119.0 | N3—C22—C21 | 125.0 (5) |
C8—C9—C10 | 120.2 (5) | N3—C22—Br2 | 116.1 (4) |
C8—C9—H9 | 119.9 | C21—C22—Br2 | 118.9 (4) |
C10—C9—H9 | 119.9 | C17—N1—C13 | 115.8 (5) |
C11—C10—C9 | 119.1 (5) | C13—N2—C10 | 121.0 (4) |
C11—C10—N2 | 120.1 (5) | C13—N2—C18 | 119.9 (4) |
C9—C10—N2 | 120.8 (5) | C10—N2—C18 | 119.0 (4) |
C12—C11—C10 | 120.8 (5) | C22—N3—C18 | 116.9 (4) |
C12—C11—H11 | 119.6 | C2—O1—C3 | 110.1 (4) |
C10—C11—H11 | 119.6 | C5—O2—C4 | 113.7 (4) |
C11—C12—C7 | 120.9 (5) | C1—S1—C6 | 92.6 (3) |
S1—C1—C2—O1 | 179.9 (4) | C18—C19—C20—C21 | 1.4 (8) |
S1—C1—C2—C5 | 0.8 (6) | C19—C20—C21—C22 | 0.8 (7) |
O1—C3—C4—O2 | 62.8 (6) | C20—C21—C22—N3 | −2.0 (8) |
C1—C2—C5—O2 | 176.4 (5) | C20—C21—C22—Br2 | 178.4 (4) |
O1—C2—C5—O2 | −2.7 (8) | C16—C17—N1—C13 | 2.2 (8) |
C1—C2—C5—C6 | −0.5 (7) | Br1—C17—N1—C13 | −179.1 (3) |
O1—C2—C5—C6 | −179.6 (5) | C14—C13—N1—C17 | −0.3 (7) |
O2—C5—C6—C7 | 2.6 (9) | N2—C13—N1—C17 | 179.3 (4) |
C2—C5—C6—C7 | 179.5 (5) | N1—C13—N2—C10 | 151.1 (5) |
O2—C5—C6—S1 | −176.9 (4) | C14—C13—N2—C10 | −29.4 (7) |
C2—C5—C6—S1 | −0.1 (6) | N1—C13—N2—C18 | −26.2 (7) |
C5—C6—C7—C8 | −167.6 (6) | C14—C13—N2—C18 | 153.3 (5) |
S1—C6—C7—C8 | 11.9 (7) | C11—C10—N2—C13 | 142.0 (5) |
C5—C6—C7—C12 | 12.5 (9) | C9—C10—N2—C13 | −38.1 (7) |
S1—C6—C7—C12 | −168.0 (4) | C11—C10—N2—C18 | −40.6 (7) |
C12—C7—C8—C9 | 0.2 (8) | C9—C10—N2—C18 | 139.2 (5) |
C6—C7—C8—C9 | −179.7 (5) | N3—C18—N2—C13 | 130.1 (5) |
C7—C8—C9—C10 | 1.5 (9) | C19—C18—N2—C13 | −52.2 (7) |
C8—C9—C10—C11 | −2.0 (9) | N3—C18—N2—C10 | −47.3 (6) |
C8—C9—C10—N2 | 178.1 (5) | C19—C18—N2—C10 | 130.4 (5) |
C9—C10—C11—C12 | 0.8 (9) | C21—C22—N3—C18 | 0.8 (7) |
N2—C10—C11—C12 | −179.4 (5) | Br2—C22—N3—C18 | −179.6 (3) |
C10—C11—C12—C7 | 1.0 (9) | C19—C18—N3—C22 | 1.7 (7) |
C8—C7—C12—C11 | −1.5 (8) | N2—C18—N3—C22 | 179.4 (4) |
C6—C7—C12—C11 | 178.4 (5) | C1—C2—O1—C3 | −153.8 (5) |
N1—C13—C14—C15 | −1.5 (8) | C5—C2—O1—C3 | 25.2 (7) |
N2—C13—C14—C15 | 179.0 (5) | C4—C3—O1—C2 | −53.4 (5) |
C13—C14—C15—C16 | 1.4 (8) | C6—C5—O2—C4 | −173.1 (5) |
C14—C15—C16—C17 | 0.2 (8) | C2—C5—O2—C4 | 10.3 (7) |
C15—C16—C17—N1 | −2.3 (9) | C3—C4—O2—C5 | −39.1 (6) |
C15—C16—C17—Br1 | 179.2 (4) | C2—C1—S1—C6 | −0.7 (5) |
N3—C18—C19—C20 | −2.8 (8) | C5—C6—S1—C1 | 0.4 (4) |
N2—C18—C19—C20 | 179.6 (4) | C7—C6—S1—C1 | −179.2 (5) |
Acknowledgements
The data were collected using instrumentation purchased with funds provided by the National Science Foundation (grant No. CHE-0741973). The Welch Foundation (grant No. F-1631) and the National Science Foundation (grant No. CHE-0847763) are acknowledged for financial support of this research.
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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 optical and electronic properties of 3,4-ethylenedioxythiophene (EDOT) containing compounds have spurred the development of materials for use in light-emitting devices, non-linear optics, and organic semi-conductors (Roncali et al., 2005). Triphenylamines with EDOT substituants have been utilized in the development of electroactive polymers with high redox stabilities (Chahma et al., 2007). The title compound is a promising precurser to branched unsymmetric electroactive polymers.
The geometry of the EDOT moiety is similar to other ethylenedioxythiophene containing compounds reported in the literature (Chen et al., 2011; Sotzing & Reynolds, 1996). The dihedral angle between the thiophene and central benzene is 12.39 (17)°. The two pyridine rings are twisted out of plane of the benzene ring. The dihedral angle between the benzene ring and the pyridine ring containing N1 is 56.66 (17)°, and the dihedral angle between the benzene ring and the pyridine ring containing N2 is 74.71 (19)°. An intramolecular C—H···O hydrogen forms an S(6) ring (Bernstein et al., 1995).
The pyramidality of the amine functionality, measured by χn, the angle between the C10—N2 vector and the N2/C13/C18 plane, described by Allen et al. (1995), is 2.3 (6)°, indicating that the hybridization of the nitrogen atom is mainly sp2 (sp2 χn ≈ 0°, sp3 χn ≈ 60°).