Supporting information
Crystallographic Information File (CIF) https://doi.org/10.1107/S1600536807037841/bt2454sup1.cif | |
Structure factor file (CIF format) https://doi.org/10.1107/S1600536807037841/bt2454Isup2.hkl |
CCDC reference: 660209
3-bromo-2-acetylthiophene (10 g, 0.048 mol) in 50 ml me thanol is mixed with benzaldehyde (5.0 g, 0.048 mol) and the mixture was treated with an 10 ml of 30% potassium hydroxide solution at 278 K (Fig. 3). The reaction mixture was then brought to room temperature and stirred for 3 h. The solid precipated was filtered and washed with water, dried and recrytallized from toluene (m.p.: 339 K).
The high value of Rint is probably due to poor crystal quality. The H atoms were included in the riding model approximation with C—H = 0.95 Å, and with Uiso(H) = 1.18–1.21Ueq(C). The maximum residual electron density peaks of 2.40 and -1.49 e Å3, were located at 0.90 and 0.76 Å from the Br1A and Br1B atoms, respectively.
Chalcones and their heterocyclic derivatives show numerous biological effects. Among several organic compounds reported for non-linear optical (NLO) property, chalcone derivatives are noticeable materials for their excellent blue light transmittance and good crystallizability. Chalcones provide a necessary configuration to show NLO property with two planar rings connected through a conjugated double bond. The NLO effect in organic molecules originates from a strong intermolecular donor-acceptor interaction, a delocalized π-electron system, and the ability to crystallize in a non-centrosymmetric structure. Secondly, the backbone is usually twisted, and this twist is inherently chiral and often results in these compounds crystallizing in non-centrosymmetric space groups. Substitution on either of the phenyl rings greatly influences non-centrosymmetric crystal packing. It is speculated that, in order to improve the activity, more bulky substituents should be introduced to increase the spontaneous polarization of a non-centrosymmetric crystal structure The molecular hyperpolarizability, β, is strongly influenced not only by the electronic effect, but also by the steric effect of the subsistent. Prompted by this, and in continuation of our quest to synthesize new materials which can find use in the photonics industries, we have synthesized a new chalcone and the present paper reports the crystal structure of a newly synthesized chalcone, (I), C13H9BrOS.
The mean planes of the 3-Bromothien-2-yl and 3-phenyl groups in molecules A and B form dihedral angles of 4.9 (7)° and 12.2 (4)°, respectively, with each other (Fig. 1). The angles between the mean plane of the prop-2-en-1-one group and those of the 3-Bromothien-2-yl and 3-phenyl groups are 2.8 (2)° and 3.8 (2)° in molecule A, and 5.1 (1)° and 9.8 (9)° in molecule B.
The packing diagram displays a zigzag array of mean planes of adjacent planar arranged groups of molecules A located next to mean planes of molecules B located diagonal along the a axis of the unit cell (Fig. 2). The closest centroid-centroid distance of 4.63 (2) Å occurs between the nearby mean planes of the inverted 3-Bromothien-2-yl and 3-phenyl groups for molecule A.
For related structures, see: Baxter et al. (1990); Ng et al. (2006); Yathirajan, Sarojini, Narayana, Ashalatha & Bolte (2006); Yathirajan, Sarojini, Narayana, Bindya & Bolte (2006); Harrison et al. (2006); Butcher et al. (2007a,b,c). For related background, see: Fichou et al. (1988); Goto et al. (1991); Cho et al. (1996); Uchida et al. (1998); Tam et al. (1989); Indira et al. (2002); Opletalova & Sedivy (1999); Butcher, Yathirajan, Sarojini et al. (2006); Butcher et al. (2006a,b).
Data collection: APEX2 (Bruker, 2006); cell refinement: APEX2; data reduction: APEX2; program(s) used to solve structure: SHELXS97 (Sheldrick, 1990); program(s) used to refine structure: SHELXL97 (Sheldrick, 1997); molecular graphics: ORTEP-3 (Farrugia, 1997); software used to prepare material for publication: SHELXTL (Bruker, 2000).
C13H9BrOS | Dx = 1.683 Mg m−3 |
Mr = 293.17 | Mo Kα radiation, λ = 0.71073 Å |
Orthorhombic, Pca21 | Cell parameters from 5433 reflections |
a = 17.321 (4) Å | θ = 2.4–28.3° |
b = 5.4295 (12) Å | µ = 3.71 mm−1 |
c = 24.600 (5) Å | T = 123 K |
V = 2313.5 (9) Å3 | Rectangular, colourless |
Z = 8 | 0.69 × 0.32 × 0.10 mm |
F(000) = 1168 |
Bruker APEXII CCD area-detector diffractometer | 5590 independent reflections |
Radiation source: fine-focus sealed tube | 4041 reflections with I > 2σ(I) |
Graphite monochromator | Rint = 0.105 |
φ and ω scans | θmax = 28.7°, θmin = 2.4° |
Absorption correction: multi-scan (SADABS; Sheldrick, 1996) | h = −23→23 |
Tmin = 0.335, Tmax = 1.000 | k = −5→7 |
17031 measured reflections | l = −31→33 |
Refinement on F2 | Secondary atom site location: difference Fourier map |
Least-squares matrix: full | Hydrogen site location: inferred from neighbouring sites |
R[F2 > 2σ(F2)] = 0.069 | H-atom parameters constrained |
wR(F2) = 0.178 | w = 1/[σ2(Fo2) + (0.114P)2] where P = (Fo2 + 2Fc2)/3 |
S = 0.99 | (Δ/σ)max = 0.001 |
5590 reflections | Δρmax = 2.41 e Å−3 |
289 parameters | Δρmin = −1.49 e Å−3 |
1 restraint | Absolute structure: Flack (1983), 2580 Friedel pairs |
Primary atom site location: structure-invariant direct methods | Absolute structure parameter: 0.014 (15) |
C13H9BrOS | V = 2313.5 (9) Å3 |
Mr = 293.17 | Z = 8 |
Orthorhombic, Pca21 | Mo Kα radiation |
a = 17.321 (4) Å | µ = 3.71 mm−1 |
b = 5.4295 (12) Å | T = 123 K |
c = 24.600 (5) Å | 0.69 × 0.32 × 0.10 mm |
Bruker APEXII CCD area-detector diffractometer | 5590 independent reflections |
Absorption correction: multi-scan (SADABS; Sheldrick, 1996) | 4041 reflections with I > 2σ(I) |
Tmin = 0.335, Tmax = 1.000 | Rint = 0.105 |
17031 measured reflections |
R[F2 > 2σ(F2)] = 0.069 | H-atom parameters constrained |
wR(F2) = 0.178 | Δρmax = 2.41 e Å−3 |
S = 0.99 | Δρmin = −1.49 e Å−3 |
5590 reflections | Absolute structure: Flack (1983), 2580 Friedel pairs |
289 parameters | Absolute structure parameter: 0.014 (15) |
1 restraint |
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 | ||
Br1A | 0.19487 (4) | −0.04060 (15) | 0.04400 (3) | 0.0344 (2) | |
Br1B | −0.10871 (5) | 0.54938 (16) | 0.45589 (3) | 0.0362 (2) | |
S1A | 0.25796 (9) | −0.2937 (3) | 0.20837 (8) | 0.0247 (4) | |
S1B | −0.15628 (9) | 0.7896 (3) | 0.28805 (8) | 0.0242 (4) | |
O1A | 0.1645 (3) | 0.1132 (10) | 0.2363 (2) | 0.0248 (10) | |
O1B | −0.0611 (3) | 0.3863 (11) | 0.2652 (2) | 0.0309 (12) | |
C1A | 0.2977 (4) | −0.4717 (15) | 0.1588 (4) | 0.0274 (17) | |
H1AA | 0.3305 | −0.6085 | 0.1656 | 0.033* | |
C2A | 0.2771 (4) | −0.3951 (16) | 0.1081 (3) | 0.0291 (17) | |
H2AA | 0.2935 | −0.4729 | 0.0755 | 0.035* | |
C3A | 0.2279 (4) | −0.1846 (13) | 0.1098 (3) | 0.0218 (14) | |
C4A | 0.2109 (4) | −0.1080 (15) | 0.1615 (3) | 0.0224 (15) | |
C5A | 0.1631 (3) | 0.0939 (14) | 0.1870 (3) | 0.0220 (15) | |
C6A | 0.1159 (3) | 0.2476 (14) | 0.1517 (3) | 0.0233 (15) | |
H6AA | 0.1161 | 0.2209 | 0.1135 | 0.028* | |
C7A | 0.0719 (4) | 0.4273 (14) | 0.1731 (3) | 0.0258 (16) | |
H7AA | 0.0741 | 0.4479 | 0.2114 | 0.031* | |
C8A | 0.0203 (4) | 0.5969 (14) | 0.1426 (3) | 0.0234 (15) | |
C9A | −0.0133 (3) | 0.7948 (14) | 0.1707 (4) | 0.0282 (16) | |
H9AA | −0.0033 | 0.8184 | 0.2083 | 0.034* | |
C10A | −0.0618 (4) | 0.9568 (14) | 0.1427 (4) | 0.0323 (19) | |
H10A | −0.0856 | 1.0885 | 0.1617 | 0.039* | |
C11A | −0.0754 (4) | 0.9286 (14) | 0.0882 (4) | 0.0329 (19) | |
H11A | −0.1064 | 1.0446 | 0.0693 | 0.040* | |
C12A | −0.0432 (4) | 0.7272 (16) | 0.0604 (3) | 0.0350 (19) | |
H12A | −0.0541 | 0.7031 | 0.0229 | 0.042* | |
C13A | 0.0046 (4) | 0.5632 (16) | 0.0877 (3) | 0.0321 (18) | |
H13A | 0.0267 | 0.4278 | 0.0688 | 0.039* | |
C1B | −0.1999 (4) | 0.9667 (14) | 0.3363 (4) | 0.0276 (16) | |
H1BA | −0.2330 | 1.1005 | 0.3276 | 0.033* | |
C2B | −0.1839 (4) | 0.9028 (15) | 0.3871 (3) | 0.0253 (16) | |
H2BA | −0.2026 | 0.9852 | 0.4185 | 0.030* | |
C3B | −0.1345 (4) | 0.6920 (14) | 0.3877 (3) | 0.0243 (14) | |
C4B | −0.1132 (3) | 0.6062 (15) | 0.3372 (3) | 0.0220 (15) | |
C5B | −0.0641 (4) | 0.4081 (12) | 0.3151 (3) | 0.0206 (14) | |
C6B | −0.0212 (4) | 0.2400 (15) | 0.3516 (3) | 0.0272 (16) | |
H6BA | −0.0264 | 0.2568 | 0.3899 | 0.033* | |
C7B | 0.0246 (4) | 0.0655 (14) | 0.3314 (3) | 0.0250 (15) | |
H7BA | 0.0260 | 0.0508 | 0.2929 | 0.030* | |
C8B | 0.0732 (3) | −0.1073 (13) | 0.3625 (3) | 0.0252 (16) | |
C9B | 0.1140 (4) | −0.2874 (13) | 0.3332 (3) | 0.0254 (15) | |
H9BA | 0.1109 | −0.2924 | 0.2946 | 0.030* | |
C10B | 0.1595 (4) | −0.4607 (15) | 0.3615 (4) | 0.0330 (18) | |
H10B | 0.1873 | −0.5822 | 0.3417 | 0.040* | |
C11B | 0.1642 (4) | −0.4563 (15) | 0.4168 (4) | 0.0354 (19) | |
H11B | 0.1947 | −0.5741 | 0.4356 | 0.042* | |
C12B | 0.1238 (5) | −0.2768 (18) | 0.4451 (4) | 0.046 (2) | |
H12B | 0.1277 | −0.2700 | 0.4836 | 0.055* | |
C13B | 0.0778 (5) | −0.1073 (16) | 0.4182 (4) | 0.0320 (17) | |
H13B | 0.0492 | 0.0102 | 0.4385 | 0.038* |
U11 | U22 | U33 | U12 | U13 | U23 | |
Br1A | 0.0368 (4) | 0.0379 (5) | 0.0284 (4) | 0.0097 (3) | −0.0013 (3) | 0.0006 (4) |
Br1B | 0.0410 (4) | 0.0391 (5) | 0.0286 (4) | 0.0139 (3) | 0.0015 (3) | 0.0031 (5) |
S1A | 0.0172 (7) | 0.0230 (9) | 0.0340 (9) | 0.0013 (6) | −0.0024 (6) | 0.0024 (8) |
S1B | 0.0190 (7) | 0.0232 (9) | 0.0303 (9) | 0.0022 (6) | −0.0020 (6) | −0.0003 (7) |
O1A | 0.020 (2) | 0.022 (3) | 0.032 (3) | 0.003 (2) | 0.003 (2) | 0.001 (2) |
O1B | 0.031 (3) | 0.027 (3) | 0.034 (3) | 0.011 (2) | 0.004 (2) | 0.001 (2) |
C1A | 0.009 (3) | 0.028 (4) | 0.045 (5) | 0.005 (3) | −0.002 (3) | −0.002 (3) |
C2A | 0.017 (3) | 0.033 (5) | 0.037 (4) | −0.005 (3) | 0.000 (3) | −0.004 (3) |
C3A | 0.021 (3) | 0.017 (4) | 0.027 (4) | 0.000 (2) | −0.003 (3) | 0.006 (3) |
C4A | 0.018 (3) | 0.021 (4) | 0.029 (4) | −0.008 (3) | 0.002 (3) | −0.008 (3) |
C5A | 0.007 (2) | 0.026 (4) | 0.034 (4) | 0.001 (2) | 0.001 (2) | 0.002 (3) |
C6A | 0.017 (3) | 0.021 (4) | 0.031 (4) | 0.003 (3) | 0.000 (3) | −0.001 (3) |
C7A | 0.016 (3) | 0.022 (4) | 0.040 (4) | 0.001 (2) | −0.002 (3) | 0.001 (3) |
C8A | 0.013 (3) | 0.022 (4) | 0.035 (4) | 0.000 (2) | 0.002 (3) | 0.003 (3) |
C9A | 0.012 (3) | 0.021 (4) | 0.051 (5) | −0.004 (3) | 0.002 (3) | −0.001 (3) |
C10A | 0.014 (3) | 0.020 (4) | 0.063 (6) | 0.003 (3) | 0.007 (3) | 0.011 (4) |
C11A | 0.019 (3) | 0.020 (4) | 0.060 (6) | 0.001 (3) | 0.000 (3) | 0.014 (4) |
C12A | 0.029 (3) | 0.038 (5) | 0.038 (5) | 0.005 (3) | 0.000 (3) | 0.011 (3) |
C13A | 0.027 (3) | 0.030 (5) | 0.040 (5) | 0.004 (3) | 0.003 (3) | 0.004 (4) |
C1B | 0.018 (3) | 0.020 (4) | 0.045 (5) | 0.000 (3) | −0.002 (3) | −0.001 (3) |
C2B | 0.015 (3) | 0.025 (4) | 0.035 (4) | −0.005 (3) | 0.007 (3) | −0.006 (3) |
C3B | 0.023 (3) | 0.021 (4) | 0.028 (4) | −0.007 (3) | −0.003 (3) | 0.003 (3) |
C4B | 0.008 (2) | 0.022 (4) | 0.036 (4) | 0.000 (2) | 0.002 (2) | 0.006 (3) |
C5B | 0.021 (3) | 0.007 (3) | 0.034 (4) | −0.002 (2) | 0.000 (3) | −0.003 (3) |
C6B | 0.020 (3) | 0.030 (4) | 0.032 (4) | 0.005 (3) | −0.005 (3) | 0.000 (3) |
C7B | 0.014 (3) | 0.025 (4) | 0.036 (4) | 0.001 (3) | −0.002 (3) | −0.001 (3) |
C8B | 0.012 (3) | 0.011 (3) | 0.053 (5) | 0.003 (2) | −0.003 (3) | −0.004 (3) |
C9B | 0.018 (3) | 0.012 (3) | 0.046 (4) | 0.000 (2) | 0.004 (3) | −0.001 (3) |
C10B | 0.014 (3) | 0.025 (4) | 0.060 (6) | 0.003 (3) | 0.001 (3) | 0.001 (4) |
C11B | 0.020 (3) | 0.030 (5) | 0.056 (6) | 0.009 (3) | −0.003 (3) | 0.004 (4) |
C12B | 0.050 (5) | 0.038 (5) | 0.050 (6) | 0.019 (4) | −0.009 (4) | 0.006 (4) |
C13B | 0.033 (4) | 0.023 (4) | 0.039 (4) | 0.015 (3) | −0.009 (3) | −0.008 (3) |
Br1A—C3A | 1.886 (7) | C11A—H11A | 0.9500 |
Br1B—C3B | 1.900 (7) | C12A—C13A | 1.389 (11) |
S1A—C1A | 1.702 (8) | C12A—H12A | 0.9500 |
S1A—C4A | 1.736 (8) | C13A—H13A | 0.9500 |
S1B—C1B | 1.705 (8) | C1B—C2B | 1.324 (12) |
S1B—C4B | 1.735 (8) | C1B—H1BA | 0.9500 |
O1A—C5A | 1.216 (9) | C2B—C3B | 1.429 (11) |
O1B—C5B | 1.235 (9) | C2B—H2BA | 0.9500 |
C1A—C2A | 1.361 (12) | C3B—C4B | 1.378 (11) |
C1A—H1AA | 0.9500 | C4B—C5B | 1.475 (10) |
C2A—C3A | 1.426 (10) | C5B—C6B | 1.480 (10) |
C2A—H2AA | 0.9500 | C6B—C7B | 1.332 (10) |
C3A—C4A | 1.371 (10) | C6B—H6BA | 0.9500 |
C4A—C5A | 1.510 (10) | C7B—C8B | 1.476 (10) |
C5A—C6A | 1.457 (10) | C7B—H7BA | 0.9500 |
C6A—C7A | 1.345 (10) | C8B—C13B | 1.371 (12) |
C6A—H6AA | 0.9500 | C8B—C9B | 1.406 (10) |
C7A—C8A | 1.487 (10) | C9B—C10B | 1.412 (11) |
C7A—H7AA | 0.9500 | C9B—H9BA | 0.9500 |
C8A—C13A | 1.390 (11) | C10B—C11B | 1.363 (13) |
C8A—C9A | 1.403 (10) | C10B—H10B | 0.9500 |
C9A—C10A | 1.397 (11) | C11B—C12B | 1.388 (12) |
C9A—H9AA | 0.9500 | C11B—H11B | 0.9500 |
C10A—C11A | 1.370 (13) | C12B—C13B | 1.386 (11) |
C10A—H10A | 0.9500 | C12B—H12B | 0.9500 |
C11A—C12A | 1.405 (12) | C13B—H13B | 0.9500 |
C1A—S1A—C4A | 92.5 (4) | C8A—C13A—H13A | 119.9 |
C1B—S1B—C4B | 91.7 (4) | C2B—C1B—S1B | 114.6 (6) |
C2A—C1A—S1A | 112.1 (6) | C2B—C1B—H1BA | 122.7 |
C2A—C1A—H1AA | 123.9 | S1B—C1B—H1BA | 122.7 |
S1A—C1A—H1AA | 123.9 | C1B—C2B—C3B | 110.2 (7) |
C1A—C2A—C3A | 112.0 (7) | C1B—C2B—H2BA | 124.9 |
C1A—C2A—H2AA | 124.0 | C3B—C2B—H2BA | 124.9 |
C3A—C2A—H2AA | 124.0 | C4B—C3B—C2B | 114.9 (7) |
C4A—C3A—C2A | 113.5 (6) | C4B—C3B—Br1B | 126.5 (6) |
C4A—C3A—Br1A | 127.2 (6) | C2B—C3B—Br1B | 118.5 (6) |
C2A—C3A—Br1A | 119.3 (5) | C3B—C4B—C5B | 137.1 (7) |
C3A—C4A—C5A | 136.4 (7) | C3B—C4B—S1B | 108.6 (6) |
C3A—C4A—S1A | 109.8 (6) | C5B—C4B—S1B | 114.2 (6) |
C5A—C4A—S1A | 113.7 (5) | O1B—C5B—C4B | 117.4 (6) |
O1A—C5A—C6A | 123.8 (6) | O1B—C5B—C6B | 121.5 (6) |
O1A—C5A—C4A | 117.8 (6) | C4B—C5B—C6B | 121.1 (6) |
C6A—C5A—C4A | 118.3 (7) | C7B—C6B—C5B | 120.7 (7) |
C7A—C6A—C5A | 120.0 (7) | C7B—C6B—H6BA | 119.6 |
C7A—C6A—H6AA | 120.0 | C5B—C6B—H6BA | 119.6 |
C5A—C6A—H6AA | 120.0 | C6B—C7B—C8B | 126.8 (8) |
C6A—C7A—C8A | 126.4 (7) | C6B—C7B—H7BA | 116.6 |
C6A—C7A—H7AA | 116.8 | C8B—C7B—H7BA | 116.6 |
C8A—C7A—H7AA | 116.8 | C13B—C8B—C9B | 118.9 (7) |
C13A—C8A—C9A | 119.9 (7) | C13B—C8B—C7B | 123.5 (7) |
C13A—C8A—C7A | 121.7 (7) | C9B—C8B—C7B | 117.5 (7) |
C9A—C8A—C7A | 118.4 (7) | C8B—C9B—C10B | 119.4 (8) |
C10A—C9A—C8A | 119.2 (8) | C8B—C9B—H9BA | 120.3 |
C10A—C9A—H9AA | 120.4 | C10B—C9B—H9BA | 120.3 |
C8A—C9A—H9AA | 120.4 | C11B—C10B—C9B | 120.9 (7) |
C11A—C10A—C9A | 121.1 (8) | C11B—C10B—H10B | 119.5 |
C11A—C10A—H10A | 119.5 | C9B—C10B—H10B | 119.5 |
C9A—C10A—H10A | 119.5 | C10B—C11B—C12B | 118.9 (8) |
C10A—C11A—C12A | 119.6 (7) | C10B—C11B—H11B | 120.5 |
C10A—C11A—H11A | 120.2 | C12B—C11B—H11B | 120.5 |
C12A—C11A—H11A | 120.2 | C13B—C12B—C11B | 121.1 (9) |
C13A—C12A—C11A | 120.0 (8) | C13B—C12B—H12B | 119.5 |
C13A—C12A—H12A | 120.0 | C11B—C12B—H12B | 119.5 |
C11A—C12A—H12A | 120.0 | C8B—C13B—C12B | 120.7 (8) |
C12A—C13A—C8A | 120.1 (8) | C8B—C13B—H13B | 119.6 |
C12A—C13A—H13A | 119.9 | C12B—C13B—H13B | 119.6 |
C4A—S1A—C1A—C2A | 0.3 (6) | C4B—S1B—C1B—C2B | 1.1 (6) |
S1A—C1A—C2A—C3A | 0.4 (8) | S1B—C1B—C2B—C3B | −1.6 (8) |
C1A—C2A—C3A—C4A | −1.2 (9) | C1B—C2B—C3B—C4B | 1.4 (9) |
C1A—C2A—C3A—Br1A | 178.0 (5) | C1B—C2B—C3B—Br1B | −175.8 (5) |
C2A—C3A—C4A—C5A | −179.2 (7) | C2B—C3B—C4B—C5B | 178.3 (7) |
Br1A—C3A—C4A—C5A | 1.6 (12) | Br1B—C3B—C4B—C5B | −4.8 (12) |
C2A—C3A—C4A—S1A | 1.4 (7) | C2B—C3B—C4B—S1B | −0.6 (7) |
Br1A—C3A—C4A—S1A | −177.7 (4) | Br1B—C3B—C4B—S1B | 176.3 (4) |
C1A—S1A—C4A—C3A | −1.0 (5) | C1B—S1B—C4B—C3B | −0.2 (5) |
C1A—S1A—C4A—C5A | 179.5 (5) | C1B—S1B—C4B—C5B | −179.4 (5) |
C3A—C4A—C5A—O1A | −176.5 (7) | C3B—C4B—C5B—O1B | 178.2 (8) |
S1A—C4A—C5A—O1A | 2.8 (8) | S1B—C4B—C5B—O1B | −2.9 (8) |
C3A—C4A—C5A—C6A | 5.9 (12) | C3B—C4B—C5B—C6B | −0.8 (12) |
S1A—C4A—C5A—C6A | −174.8 (5) | S1B—C4B—C5B—C6B | 178.1 (5) |
O1A—C5A—C6A—C7A | 1.8 (11) | O1B—C5B—C6B—C7B | 2.7 (11) |
C4A—C5A—C6A—C7A | 179.2 (6) | C4B—C5B—C6B—C7B | −178.3 (7) |
C5A—C6A—C7A—C8A | −179.3 (6) | C5B—C6B—C7B—C8B | 177.1 (7) |
C6A—C7A—C8A—C13A | 8.7 (11) | C6B—C7B—C8B—C13B | −0.6 (12) |
C6A—C7A—C8A—C9A | −171.5 (7) | C6B—C7B—C8B—C9B | 176.4 (7) |
C13A—C8A—C9A—C10A | −0.5 (10) | C13B—C8B—C9B—C10B | −1.0 (10) |
C7A—C8A—C9A—C10A | 179.7 (6) | C7B—C8B—C9B—C10B | −178.2 (6) |
C8A—C9A—C10A—C11A | −1.6 (10) | C8B—C9B—C10B—C11B | 0.2 (11) |
C9A—C10A—C11A—C12A | 3.0 (11) | C9B—C10B—C11B—C12B | −0.4 (12) |
C10A—C11A—C12A—C13A | −2.5 (11) | C10B—C11B—C12B—C13B | 1.4 (13) |
C11A—C12A—C13A—C8A | 0.4 (12) | C9B—C8B—C13B—C12B | 2.1 (12) |
C9A—C8A—C13A—C12A | 1.0 (11) | C7B—C8B—C13B—C12B | 179.1 (8) |
C7A—C8A—C13A—C12A | −179.2 (7) | C11B—C12B—C13B—C8B | −2.3 (14) |
Experimental details
Crystal data | |
Chemical formula | C13H9BrOS |
Mr | 293.17 |
Crystal system, space group | Orthorhombic, Pca21 |
Temperature (K) | 123 |
a, b, c (Å) | 17.321 (4), 5.4295 (12), 24.600 (5) |
V (Å3) | 2313.5 (9) |
Z | 8 |
Radiation type | Mo Kα |
µ (mm−1) | 3.71 |
Crystal size (mm) | 0.69 × 0.32 × 0.10 |
Data collection | |
Diffractometer | Bruker APEXII CCD area-detector |
Absorption correction | Multi-scan (SADABS; Sheldrick, 1996) |
Tmin, Tmax | 0.335, 1.000 |
No. of measured, independent and observed [I > 2σ(I)] reflections | 17031, 5590, 4041 |
Rint | 0.105 |
(sin θ/λ)max (Å−1) | 0.675 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.069, 0.178, 0.99 |
No. of reflections | 5590 |
No. of parameters | 289 |
No. of restraints | 1 |
H-atom treatment | H-atom parameters constrained |
Δρmax, Δρmin (e Å−3) | 2.41, −1.49 |
Absolute structure | Flack (1983), 2580 Friedel pairs |
Absolute structure parameter | 0.014 (15) |
Computer programs: APEX2 (Bruker, 2006), APEX2, SHELXS97 (Sheldrick, 1990), SHELXL97 (Sheldrick, 1997), ORTEP-3 (Farrugia, 1997), SHELXTL (Bruker, 2000).
Chalcones and their heterocyclic derivatives show numerous biological effects. Among several organic compounds reported for non-linear optical (NLO) property, chalcone derivatives are noticeable materials for their excellent blue light transmittance and good crystallizability. Chalcones provide a necessary configuration to show NLO property with two planar rings connected through a conjugated double bond. The NLO effect in organic molecules originates from a strong intermolecular donor-acceptor interaction, a delocalized π-electron system, and the ability to crystallize in a non-centrosymmetric structure. Secondly, the backbone is usually twisted, and this twist is inherently chiral and often results in these compounds crystallizing in non-centrosymmetric space groups. Substitution on either of the phenyl rings greatly influences non-centrosymmetric crystal packing. It is speculated that, in order to improve the activity, more bulky substituents should be introduced to increase the spontaneous polarization of a non-centrosymmetric crystal structure The molecular hyperpolarizability, β, is strongly influenced not only by the electronic effect, but also by the steric effect of the subsistent. Prompted by this, and in continuation of our quest to synthesize new materials which can find use in the photonics industries, we have synthesized a new chalcone and the present paper reports the crystal structure of a newly synthesized chalcone, (I), C13H9BrOS.
The mean planes of the 3-Bromothien-2-yl and 3-phenyl groups in molecules A and B form dihedral angles of 4.9 (7)° and 12.2 (4)°, respectively, with each other (Fig. 1). The angles between the mean plane of the prop-2-en-1-one group and those of the 3-Bromothien-2-yl and 3-phenyl groups are 2.8 (2)° and 3.8 (2)° in molecule A, and 5.1 (1)° and 9.8 (9)° in molecule B.
The packing diagram displays a zigzag array of mean planes of adjacent planar arranged groups of molecules A located next to mean planes of molecules B located diagonal along the a axis of the unit cell (Fig. 2). The closest centroid-centroid distance of 4.63 (2) Å occurs between the nearby mean planes of the inverted 3-Bromothien-2-yl and 3-phenyl groups for molecule A.