organic compounds
2-[(E)-2-(4-Chlorophenyl)ethenyl]-1-methylpyridinium 4-bromobenzenesulfonate
aCrystal Materials Research Unit, Department of Chemistry, Faculty of Science, Prince of Songkla University, Hat-Yai, Songkhla 90112, Thailand, and bX-ray Crystallography Unit, School of Physics, Universiti Sains Malaysia, 11800 USM, Penang, Malaysia
*Correspondence e-mail: suchada.c@psu.ac.th
In the title compound, C14H13ClN+·C6H4BrO3S−, the cation exists in an E configuration with respect to the ethenyl bond and is almost planar, the dihedral angle between the pyridinium and the benzene rings being 2.80 (7)°. The dihedral angles between the benzene ring of the anion and the pyridinium and benzene rings of the cation are 80.88 (7) and 79.05 (7)°, respectively. In the crystal, the cations are stacked into columns along the a axis as a result of π–π interactions between the pyridinium and chlorobenzene rings with a Cg⋯Cg distance of 3.6976 (8) Å. The anions are linked into chains along the a axis by weak C—H⋯O interactions. These anion chains are linked to adjacent cations by additional weak C—H⋯O and C—H⋯Br interactions, forming a two-dimensional network parallel to the ab plane. There are also short O⋯Br [3.2567 (11) Å] and C⋯O [2.9917 (18) Å] contacts. The is further stabilized by C—H⋯π interactions involving the aromatic ring of the anion.
Related literature
For bond-length data, see: Allen et al. (1987). For background to non-linear optical materials research, see: Andreu et al. (1999); Jagannathan et al. (2007); Cho et al. (2002); Lakshmanaperumal et al. (2003); Veiros (2001). For related structures, see: Chanawanno et al. (2008; 2009); Chantrapromma et al. (2006); Fun et al. (2009). For the stability of the temperature controller used in the data collection, see: Cosier & Glazer (1986).
Experimental
Crystal data
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Refinement
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Data collection: APEX2 (Bruker, 2005); cell SAINT (Bruker, 2005); 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
10.1107/S1600536809026968/sj2633sup1.cif
contains datablocks global, I. DOI:Structure factors: contains datablock I. DOI: 10.1107/S1600536809026968/sj2633Isup2.hkl
2-[(E)-2-(4-Chlorophenyl)ethenyl]-1-methylpyridinium iodide (0.24 g, 0.67 mmol) which was prepared according to a previous report (Chanawanno et al., 2008) was mixed (1:1 molar ratio) with silver(I) 4-bromobenzenesulfonate (0.23 g, 0.67 mmol) (Chantrapromma et al., 2006) in methanol solution (100 ml). The mixture solution was stirred for 30 min, the precipitate of silver iodide which formed was filtered and the filtrate was evaporated to give the title compound as an orange solid. Brown block-shaped single crystals of the title compound suitable for x-ray
were recrystallized from methanol by slow evaporation at room temperature over a month, Mp. 508-509 K.All H atoms were positioned geometrically and allowed to ride on their parent atoms, with d(C-H) = 0.93 Å for aromatic and CH and 0.96 Å for CH3 atoms. The Uiso values were constrained to be 1.5Ueq of the
for methyl H atoms and 1.2Ueq for the remaining H atoms. A rotating group model was used for the methyl groups. The highest residual electron density peak is located at 0.70 Å from Cl1 and the deepest hole is located at 0.50 Å from Cl1.Data collection: APEX2 (Bruker, 2005); cell
SAINT (Bruker, 2005); data reduction: SAINT (Bruker, 2005); 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).Fig. 1. The molecular structure of the title compound, with 50% probability displacement ellipsoids and the atom-numbering scheme. | |
Fig. 2. The crystal packing of the title compound viewed down the c axis. Weak C—H···O and C—H···Br interactions are shown as dashed lines. |
C14H13ClN+·C6H4BrO3S− | F(000) = 944 |
Mr = 466.77 | Dx = 1.651 Mg m−3 |
Monoclinic, P21/c | Melting point = 508–509 K |
Hall symbol: -P 2ybc | Mo Kα radiation, λ = 0.71073 Å |
a = 7.9476 (1) Å | Cell parameters from 8227 reflections |
b = 18.6099 (3) Å | θ = 2.2–35.0° |
c = 12.7173 (2) Å | µ = 2.46 mm−1 |
β = 93.467 (1)° | T = 100 K |
V = 1877.50 (5) Å3 | Block, brown |
Z = 4 | 0.51 × 0.26 × 0.24 mm |
Bruker APEXII CCD area-detector diffractometer | 8227 independent reflections |
Radiation source: sealed tube | 6744 reflections with I > 2σ(I) |
Graphite monochromator | Rint = 0.026 |
ϕ and ω scans | θmax = 35.0°, θmin = 2.2° |
Absorption correction: multi-scan (SADABS; Bruker, 2005) | h = −12→12 |
Tmin = 0.368, Tmax = 0.586 | k = −29→30 |
36425 measured reflections | l = −20→20 |
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)] = 0.031 | Hydrogen site location: inferred from neighbouring sites |
wR(F2) = 0.079 | H-atom parameters constrained |
S = 1.02 | w = 1/[σ2(Fo2) + (0.0355P)2 + 1.227P] where P = (Fo2 + 2Fc2)/3 |
8227 reflections | (Δ/σ)max = 0.002 |
245 parameters | Δρmax = 1.30 e Å−3 |
0 restraints | Δρmin = −0.73 e Å−3 |
C14H13ClN+·C6H4BrO3S− | V = 1877.50 (5) Å3 |
Mr = 466.77 | Z = 4 |
Monoclinic, P21/c | Mo Kα radiation |
a = 7.9476 (1) Å | µ = 2.46 mm−1 |
b = 18.6099 (3) Å | T = 100 K |
c = 12.7173 (2) Å | 0.51 × 0.26 × 0.24 mm |
β = 93.467 (1)° |
Bruker APEXII CCD area-detector diffractometer | 8227 independent reflections |
Absorption correction: multi-scan (SADABS; Bruker, 2005) | 6744 reflections with I > 2σ(I) |
Tmin = 0.368, Tmax = 0.586 | Rint = 0.026 |
36425 measured reflections |
R[F2 > 2σ(F2)] = 0.031 | 0 restraints |
wR(F2) = 0.079 | H-atom parameters constrained |
S = 1.02 | Δρmax = 1.30 e Å−3 |
8227 reflections | Δρmin = −0.73 e Å−3 |
245 parameters |
Experimental. The crystal was placed in the cold stream of an Oxford Cryosystems Cobra open-flow nitrogen cryostat (Cosier & Glazer, 1986) operating at 100.0 (1) K. |
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 | ||
Br1 | 0.233790 (18) | 0.807999 (8) | 0.089929 (11) | 0.01901 (4) | |
Cl1 | 0.39854 (5) | 0.44980 (2) | −0.33199 (3) | 0.02829 (8) | |
S1 | 0.87153 (4) | 0.769209 (17) | 0.42302 (2) | 0.01344 (6) | |
N1 | 1.03961 (15) | 0.57489 (6) | 0.26973 (9) | 0.0163 (2) | |
O1 | 1.01963 (13) | 0.79162 (6) | 0.36935 (9) | 0.01957 (19) | |
O2 | 0.83179 (15) | 0.81603 (6) | 0.50948 (8) | 0.0220 (2) | |
O3 | 0.87526 (14) | 0.69338 (5) | 0.45166 (8) | 0.01917 (19) | |
C1 | 1.1310 (2) | 0.57574 (8) | 0.36310 (11) | 0.0206 (3) | |
H1A | 1.1703 | 0.6194 | 0.3904 | 0.025* | |
C2 | 1.1670 (2) | 0.51371 (8) | 0.41839 (11) | 0.0219 (3) | |
H2A | 1.2302 | 0.5150 | 0.4823 | 0.026* | |
C3 | 1.1070 (2) | 0.44893 (8) | 0.37682 (11) | 0.0214 (3) | |
H3A | 1.1279 | 0.4063 | 0.4134 | 0.026* | |
C4 | 1.01612 (19) | 0.44842 (8) | 0.28073 (11) | 0.0195 (2) | |
H4A | 0.9780 | 0.4050 | 0.2521 | 0.023* | |
C5 | 0.98054 (17) | 0.51241 (7) | 0.22572 (11) | 0.0163 (2) | |
C6 | 0.88146 (18) | 0.51613 (7) | 0.12614 (11) | 0.0180 (2) | |
H6A | 0.8578 | 0.5612 | 0.0973 | 0.022* | |
C7 | 0.82227 (19) | 0.45815 (7) | 0.07362 (11) | 0.0191 (2) | |
H7A | 0.8488 | 0.4134 | 0.1027 | 0.023* | |
C8 | 0.71911 (18) | 0.45944 (7) | −0.02595 (11) | 0.0166 (2) | |
C9 | 0.6540 (2) | 0.39406 (7) | −0.06589 (11) | 0.0207 (3) | |
H9A | 0.6790 | 0.3518 | −0.0293 | 0.025* | |
C10 | 0.5528 (2) | 0.39117 (8) | −0.15891 (12) | 0.0225 (3) | |
H10A | 0.5082 | 0.3477 | −0.1836 | 0.027* | |
C11 | 0.51988 (19) | 0.45417 (8) | −0.21391 (11) | 0.0193 (2) | |
C12 | 0.58160 (19) | 0.52002 (8) | −0.17711 (11) | 0.0193 (2) | |
H12A | 0.5572 | 0.5619 | −0.2149 | 0.023* | |
C13 | 0.68025 (18) | 0.52247 (7) | −0.08315 (11) | 0.0184 (2) | |
H13A | 0.7211 | 0.5664 | −0.0578 | 0.022* | |
C14 | 1.0017 (2) | 0.64493 (7) | 0.21800 (11) | 0.0202 (3) | |
H14A | 1.0547 | 0.6828 | 0.2591 | 0.030* | |
H14B | 0.8820 | 0.6524 | 0.2126 | 0.030* | |
H14C | 1.0439 | 0.6449 | 0.1488 | 0.030* | |
C15 | 0.69849 (16) | 0.77983 (7) | 0.32849 (10) | 0.0132 (2) | |
C16 | 0.53518 (17) | 0.77816 (7) | 0.36296 (10) | 0.0166 (2) | |
H16A | 0.5188 | 0.7707 | 0.4339 | 0.020* | |
C17 | 0.39682 (17) | 0.78748 (7) | 0.29222 (11) | 0.0162 (2) | |
H17A | 0.2879 | 0.7859 | 0.3150 | 0.019* | |
C18 | 0.42424 (17) | 0.79926 (7) | 0.18665 (10) | 0.0146 (2) | |
C19 | 0.58535 (18) | 0.80181 (7) | 0.15040 (10) | 0.0150 (2) | |
H19A | 0.6012 | 0.8102 | 0.0796 | 0.018* | |
C20 | 0.72348 (17) | 0.79154 (7) | 0.22238 (10) | 0.0139 (2) | |
H20A | 0.8323 | 0.7925 | 0.1993 | 0.017* |
U11 | U22 | U33 | U12 | U13 | U23 | |
Br1 | 0.01657 (7) | 0.02094 (6) | 0.01858 (6) | 0.00174 (5) | −0.00664 (5) | 0.00000 (5) |
Cl1 | 0.02706 (18) | 0.0357 (2) | 0.02110 (15) | 0.00237 (15) | −0.00652 (13) | −0.00412 (14) |
S1 | 0.01243 (13) | 0.01367 (12) | 0.01385 (12) | 0.00116 (10) | −0.00235 (10) | −0.00005 (9) |
N1 | 0.0170 (5) | 0.0155 (5) | 0.0163 (5) | 0.0024 (4) | 0.0002 (4) | −0.0001 (4) |
O1 | 0.0124 (4) | 0.0235 (5) | 0.0225 (5) | −0.0018 (4) | −0.0013 (4) | 0.0022 (4) |
O2 | 0.0244 (5) | 0.0241 (5) | 0.0169 (4) | 0.0055 (4) | −0.0041 (4) | −0.0065 (4) |
O3 | 0.0203 (5) | 0.0150 (4) | 0.0215 (4) | 0.0013 (4) | −0.0043 (4) | 0.0040 (3) |
C1 | 0.0247 (7) | 0.0205 (6) | 0.0162 (5) | 0.0026 (5) | −0.0010 (5) | −0.0015 (4) |
C2 | 0.0251 (7) | 0.0248 (6) | 0.0154 (5) | 0.0050 (5) | −0.0009 (5) | 0.0015 (5) |
C3 | 0.0249 (7) | 0.0205 (6) | 0.0190 (6) | 0.0057 (5) | 0.0023 (5) | 0.0034 (5) |
C4 | 0.0209 (6) | 0.0164 (5) | 0.0212 (6) | 0.0017 (5) | 0.0007 (5) | 0.0013 (4) |
C5 | 0.0153 (6) | 0.0161 (5) | 0.0173 (5) | 0.0026 (4) | −0.0003 (4) | 0.0000 (4) |
C6 | 0.0196 (6) | 0.0169 (5) | 0.0171 (5) | 0.0012 (5) | −0.0020 (5) | 0.0007 (4) |
C7 | 0.0226 (6) | 0.0170 (6) | 0.0176 (5) | 0.0008 (5) | 0.0003 (5) | 0.0013 (4) |
C8 | 0.0169 (6) | 0.0146 (5) | 0.0183 (5) | −0.0003 (4) | −0.0001 (4) | −0.0001 (4) |
C9 | 0.0261 (7) | 0.0141 (5) | 0.0217 (6) | −0.0008 (5) | −0.0021 (5) | −0.0002 (4) |
C10 | 0.0278 (7) | 0.0174 (6) | 0.0220 (6) | −0.0026 (5) | −0.0016 (5) | −0.0034 (5) |
C11 | 0.0186 (6) | 0.0221 (6) | 0.0170 (5) | 0.0015 (5) | −0.0004 (5) | −0.0023 (4) |
C12 | 0.0197 (6) | 0.0176 (6) | 0.0203 (6) | 0.0012 (5) | −0.0014 (5) | 0.0018 (4) |
C13 | 0.0182 (6) | 0.0144 (5) | 0.0223 (6) | −0.0009 (4) | −0.0008 (5) | 0.0004 (4) |
C14 | 0.0268 (7) | 0.0143 (5) | 0.0191 (6) | 0.0023 (5) | −0.0032 (5) | 0.0006 (4) |
C15 | 0.0131 (5) | 0.0127 (5) | 0.0137 (5) | 0.0005 (4) | −0.0008 (4) | 0.0000 (4) |
C16 | 0.0145 (5) | 0.0206 (6) | 0.0146 (5) | 0.0016 (5) | 0.0002 (4) | 0.0018 (4) |
C17 | 0.0126 (5) | 0.0194 (5) | 0.0166 (5) | 0.0012 (4) | −0.0004 (4) | 0.0010 (4) |
C18 | 0.0136 (5) | 0.0140 (5) | 0.0156 (5) | 0.0011 (4) | −0.0036 (4) | −0.0003 (4) |
C19 | 0.0175 (6) | 0.0146 (5) | 0.0127 (5) | 0.0004 (4) | −0.0011 (4) | −0.0006 (4) |
C20 | 0.0132 (5) | 0.0143 (5) | 0.0141 (5) | 0.0006 (4) | 0.0003 (4) | −0.0002 (4) |
Br1—C18 | 1.8988 (13) | C8—C9 | 1.4052 (19) |
Cl1—C11 | 1.7368 (14) | C9—C10 | 1.390 (2) |
S1—O2 | 1.4525 (11) | C9—H9A | 0.9300 |
S1—O1 | 1.4569 (11) | C10—C11 | 1.382 (2) |
S1—O3 | 1.4572 (10) | C10—H10A | 0.9300 |
S1—C15 | 1.7820 (13) | C11—C12 | 1.390 (2) |
N1—C1 | 1.3540 (18) | C12—C13 | 1.390 (2) |
N1—C5 | 1.3615 (18) | C12—H12A | 0.9300 |
N1—C14 | 1.4828 (17) | C13—H13A | 0.9300 |
C1—C2 | 1.373 (2) | C14—H14A | 0.9600 |
C1—H1A | 0.9300 | C14—H14B | 0.9600 |
C2—C3 | 1.389 (2) | C14—H14C | 0.9600 |
C2—H2A | 0.9300 | C15—C20 | 1.3930 (18) |
C3—C4 | 1.381 (2) | C15—C16 | 1.3952 (19) |
C3—H3A | 0.9300 | C16—C17 | 1.3889 (18) |
C4—C5 | 1.4013 (19) | C16—H16A | 0.9300 |
C4—H4A | 0.9300 | C17—C18 | 1.3905 (19) |
C5—C6 | 1.4518 (19) | C17—H17A | 0.9300 |
C6—C7 | 1.3393 (19) | C18—C19 | 1.3877 (19) |
C6—H6A | 0.9300 | C19—C20 | 1.3993 (18) |
C7—C8 | 1.4665 (19) | C19—H19A | 0.9300 |
C7—H7A | 0.9300 | C20—H20A | 0.9300 |
C8—C13 | 1.4048 (19) | ||
O2—S1—O1 | 113.69 (7) | C11—C10—C9 | 118.67 (13) |
O2—S1—O3 | 113.19 (7) | C11—C10—H10A | 120.7 |
O1—S1—O3 | 112.92 (7) | C9—C10—H10A | 120.7 |
O2—S1—C15 | 104.47 (6) | C10—C11—C12 | 121.67 (13) |
O1—S1—C15 | 105.34 (6) | C10—C11—Cl1 | 118.43 (11) |
O3—S1—C15 | 106.22 (6) | C12—C11—Cl1 | 119.90 (11) |
C1—N1—C5 | 121.59 (12) | C13—C12—C11 | 119.18 (13) |
C1—N1—C14 | 117.56 (12) | C13—C12—H12A | 120.4 |
C5—N1—C14 | 120.84 (11) | C11—C12—H12A | 120.4 |
N1—C1—C2 | 121.57 (14) | C12—C13—C8 | 120.85 (13) |
N1—C1—H1A | 119.2 | C12—C13—H13A | 119.6 |
C2—C1—H1A | 119.2 | C8—C13—H13A | 119.6 |
C1—C2—C3 | 118.61 (13) | N1—C14—H14A | 109.5 |
C1—C2—H2A | 120.7 | N1—C14—H14B | 109.5 |
C3—C2—H2A | 120.7 | H14A—C14—H14B | 109.5 |
C4—C3—C2 | 119.44 (13) | N1—C14—H14C | 109.5 |
C4—C3—H3A | 120.3 | H14A—C14—H14C | 109.5 |
C2—C3—H3A | 120.3 | H14B—C14—H14C | 109.5 |
C3—C4—C5 | 120.98 (13) | C20—C15—C16 | 119.85 (12) |
C3—C4—H4A | 119.5 | C20—C15—S1 | 121.43 (10) |
C5—C4—H4A | 119.5 | C16—C15—S1 | 118.70 (9) |
N1—C5—C4 | 117.80 (12) | C17—C16—C15 | 120.59 (12) |
N1—C5—C6 | 118.24 (12) | C17—C16—H16A | 119.7 |
C4—C5—C6 | 123.95 (13) | C15—C16—H16A | 119.7 |
C7—C6—C5 | 123.52 (13) | C16—C17—C18 | 118.74 (13) |
C7—C6—H6A | 118.2 | C16—C17—H17A | 120.6 |
C5—C6—H6A | 118.2 | C18—C17—H17A | 120.6 |
C6—C7—C8 | 125.35 (13) | C19—C18—C17 | 121.86 (12) |
C6—C7—H7A | 117.3 | C19—C18—Br1 | 119.82 (10) |
C8—C7—H7A | 117.3 | C17—C18—Br1 | 118.27 (10) |
C13—C8—C9 | 118.10 (12) | C18—C19—C20 | 118.76 (12) |
C13—C8—C7 | 123.69 (12) | C18—C19—H19A | 120.6 |
C9—C8—C7 | 118.20 (12) | C20—C19—H19A | 120.6 |
C10—C9—C8 | 121.50 (13) | C15—C20—C19 | 120.19 (12) |
C10—C9—H9A | 119.3 | C15—C20—H20A | 119.9 |
C8—C9—H9A | 119.3 | C19—C20—H20A | 119.9 |
C5—N1—C1—C2 | −0.7 (2) | C10—C11—C12—C13 | 0.6 (2) |
C14—N1—C1—C2 | 177.66 (14) | Cl1—C11—C12—C13 | −179.20 (11) |
N1—C1—C2—C3 | −0.2 (2) | C11—C12—C13—C8 | 0.6 (2) |
C1—C2—C3—C4 | 1.2 (2) | C9—C8—C13—C12 | −0.7 (2) |
C2—C3—C4—C5 | −1.4 (2) | C7—C8—C13—C12 | −179.97 (14) |
C1—N1—C5—C4 | 0.5 (2) | O2—S1—C15—C20 | 132.62 (11) |
C14—N1—C5—C4 | −177.77 (13) | O1—S1—C15—C20 | 12.55 (12) |
C1—N1—C5—C6 | 179.13 (13) | O3—S1—C15—C20 | −107.47 (11) |
C14—N1—C5—C6 | 0.8 (2) | O2—S1—C15—C16 | −45.68 (12) |
C3—C4—C5—N1 | 0.5 (2) | O1—S1—C15—C16 | −165.75 (11) |
C3—C4—C5—C6 | −178.01 (14) | O3—S1—C15—C16 | 74.23 (12) |
N1—C5—C6—C7 | 177.40 (14) | C20—C15—C16—C17 | 0.5 (2) |
C4—C5—C6—C7 | −4.1 (2) | S1—C15—C16—C17 | 178.87 (11) |
C5—C6—C7—C8 | 178.74 (14) | C15—C16—C17—C18 | −0.7 (2) |
C6—C7—C8—C13 | 5.2 (2) | C16—C17—C18—C19 | 0.1 (2) |
C6—C7—C8—C9 | −174.16 (15) | C16—C17—C18—Br1 | 177.48 (10) |
C13—C8—C9—C10 | −0.4 (2) | C17—C18—C19—C20 | 0.59 (19) |
C7—C8—C9—C10 | 178.93 (14) | Br1—C18—C19—C20 | −176.75 (9) |
C8—C9—C10—C11 | 1.6 (2) | C16—C15—C20—C19 | 0.17 (19) |
C9—C10—C11—C12 | −1.7 (2) | S1—C15—C20—C19 | −178.11 (10) |
C9—C10—C11—Cl1 | 178.16 (12) | C18—C19—C20—C15 | −0.72 (19) |
D—H···A | D—H | H···A | D···A | D—H···A |
C1—H1A···Br1i | 0.93 | 2.89 | 3.6585 (14) | 141 |
C3—H3A···O3ii | 0.93 | 2.53 | 3.4285 (17) | 163 |
C6—H6A···O2iii | 0.93 | 2.55 | 3.4702 (17) | 172 |
C7—H7A···O1iv | 0.93 | 2.51 | 3.4057 (17) | 161 |
C13—H13A···O2iii | 0.93 | 2.49 | 3.4205 (17) | 180 |
C14—H14A···O1 | 0.96 | 2.49 | 3.3383 (17) | 148 |
C14—H14C···O2iii | 0.96 | 2.48 | 2.9917 (18) | 113 |
C17—H17A···O1v | 0.93 | 2.28 | 3.2110 (17) | 175 |
C20—H20A···O1 | 0.93 | 2.55 | 2.9157 (17) | 104 |
C10—H10A···Cg3vi | 0.93 | 2.77 | 3.6831 (16) | 169 |
C12—H12A···Cg3iii | 0.93 | 2.79 | 3.6402 (16) | 153 |
Symmetry codes: (i) x+1, −y+3/2, z+1/2; (ii) −x+2, −y+1, −z+1; (iii) x, −y+3/2, z−1/2; (iv) −x+2, y−1/2, −z+1/2; (v) x−1, y, z; (vi) −x+1, −y+1, −z. |
Experimental details
Crystal data | |
Chemical formula | C14H13ClN+·C6H4BrO3S− |
Mr | 466.77 |
Crystal system, space group | Monoclinic, P21/c |
Temperature (K) | 100 |
a, b, c (Å) | 7.9476 (1), 18.6099 (3), 12.7173 (2) |
β (°) | 93.467 (1) |
V (Å3) | 1877.50 (5) |
Z | 4 |
Radiation type | Mo Kα |
µ (mm−1) | 2.46 |
Crystal size (mm) | 0.51 × 0.26 × 0.24 |
Data collection | |
Diffractometer | Bruker APEXII CCD area-detector diffractometer |
Absorption correction | Multi-scan (SADABS; Bruker, 2005) |
Tmin, Tmax | 0.368, 0.586 |
No. of measured, independent and observed [I > 2σ(I)] reflections | 36425, 8227, 6744 |
Rint | 0.026 |
(sin θ/λ)max (Å−1) | 0.807 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.031, 0.079, 1.02 |
No. of reflections | 8227 |
No. of parameters | 245 |
H-atom treatment | H-atom parameters constrained |
Δρmax, Δρmin (e Å−3) | 1.30, −0.73 |
Computer programs: APEX2 (Bruker, 2005), SAINT (Bruker, 2005), SHELXTL (Sheldrick, 2008) and PLATON (Spek, 2009).
D—H···A | D—H | H···A | D···A | D—H···A |
C1—H1A···Br1i | 0.93 | 2.89 | 3.6585 (14) | 141 |
C3—H3A···O3ii | 0.93 | 2.53 | 3.4285 (17) | 163 |
C6—H6A···O2iii | 0.93 | 2.55 | 3.4702 (17) | 172 |
C7—H7A···O1iv | 0.93 | 2.51 | 3.4057 (17) | 161 |
C13—H13A···O2iii | 0.93 | 2.49 | 3.4205 (17) | 180 |
C14—H14A···O1 | 0.96 | 2.49 | 3.3383 (17) | 148 |
C14—H14C···O2iii | 0.96 | 2.48 | 2.9917 (18) | 113 |
C17—H17A···O1v | 0.93 | 2.28 | 3.2110 (17) | 175 |
C20—H20A···O1 | 0.93 | 2.55 | 2.9157 (17) | 104 |
C10—H10A···Cg3vi | 0.93 | 2.77 | 3.6831 (16) | 169 |
C12—H12A···Cg3iii | 0.93 | 2.79 | 3.6402 (16) | 153 |
Symmetry codes: (i) x+1, −y+3/2, z+1/2; (ii) −x+2, −y+1, −z+1; (iii) x, −y+3/2, z−1/2; (iv) −x+2, y−1/2, −z+1/2; (v) x−1, y, z; (vi) −x+1, −y+1, −z. |
Acknowledgements
KC thanks the Development and Promotion of Science and Technology Talents Project (DPST) for a study grant and the Graduate School, Prince of Songkla University, for partial financial support. The authors also thank Prince of Songkla University for financial support through the Crystal Materials Research Unit and the Malaysian Government and Universiti Sains Malaysia for the Research University Golden Goose grant No. 1001/PFIZIK/811012.
References
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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.
Stilbazolium is a competitive candidate for organic nonlinear optical (NLO) materials and yields high optical nonlinearities including large second harmonic generation (SHG) (Andreu et al., 1999; Jagannathan et al., 2007). Molecules with large π systems have been extensively used in attempts to obtain NLO materials (Veiros, 2001). This hypothesis led to a popular approach towards such materials which are synthesized from compounds with extended π conjugated systems to ensure large second-molecular hyperpolarizability (β) (Lakshmanaperumal et al., 2003). However, this approach will not be effective if the molecules of these compounds are arranged in centrosymmetric space groups (Cho et al., 2002). The title compound (I) has been synthesized and its crystal structure was undertaken in order to establish the orientation of molecules in the solid state. It was found that (I) crystallized in centrosymmetric space group P21/c so no second-order nonlinear optical properties are observed.
In the molecule of the title compound, C14H13ClN+. C6H4BrO3S- (Fig. 1), the cation exists in an E configuration with respect to the ethenyl C6═C7 bond [1.3393 (19) Å] and the torsion angle of C5–C6–C7–C8 = 178.74 (14)°. The cation is almost planar with the dihedral angle between the pyridinium and benzene rings of the cation being 2.80 (7)°. The anion is inclined to the cation which is reflected by the dihedral angles between the benzene ring of the anion and the pyridinium and benzene rings of the cation being 80.88 (7) and 79.05 (7)°. The Br substituents are coplanar with the attached benzene rings. The bond distances in both cation and anion have normal values (Allen et al., 1987) and are comparable with the closely related compounds (Chanawanno et al., 2008; 2009; Chantrapromma et al., 2006; Fun et al., 2009).
In the crystal packing (Fig. 2), all O atoms of the sulfonate group are involved in weak C—H···O interactions (Table 1). The cations are stacked into columns along the a axis as a result of π–π interactions with a Cg1···Cg2 distance of 3.6976 (8) Å (symmetry code 2-x, 1-y, -z); Cg1 and Cg2 are the centroids of the C1–C5/N1 and C8–C13 rings, respectively. The anions are linked into chains along the a axis by a weak C—H···O interaction (Table 1). The anions are linked to the adjacent cations by weak C—H···O and C—H···Br interactions forming a 2D network parallel to the ab plane. There are also O···Br [3.2567 (11) Å; symmetry codes: 1+x, 3/2-y, 1/2+z and -1+x, 3/2-y, -1/2+z] and C···O [2.9917 (18) Å; symmetry code: x, 3/2-y, z] short contacts. The crystal structure is further stabilized by C—H···π interactions involving the C15–C20 ring of the anion. .