organic compounds
E)-2-(2-{5-[(2-acetoxyethyl)(methyl)amino]thiophen-2-yl}vinyl)-3-methylbenzothiazolium iodide monohydrate
of (aDepartment of Chemistry, Anhui University, Hefei 230039, People's Republic of China, and bKey Laboratory of Functional Inorganic Materials Chemistry, Hefei 230039, People's Republic of China
*Correspondence e-mail: ahuddl09@126.com
In the cation of the title hydrated salt, C19H21N2O2S2+·I−·H2O, the benzothiazolium ring system is approximately planar [maximum deviation = 0.0251 (15) Å], and it makes a small dihedral angle of 1.16 (18)° with the plane of the thiophene ring. In the crystal, the cations, anions and crystalline water molecules are linked by classical O—H⋯O, O—H⋯I and weak C—H⋯O hydrogn bonds, forming a three-dimensional supramolecular network. π–π stacking is observed between parallel thiazole rings of adjacent cations [centroid–centroid distance = 3.5945 (16) Å].
CCDC reference: 1023218
1. Related literature
Interest in organic compounds with non-linear optical (NLO) properties is driven by the prospective of their applications in optical information technologies. The most common design of molecules with large NLO-activity comprises strong electron donors and acceptors connected by a π-conjugated system, see: Hao et al. (2009); Zhou et al. (2011). For the crystal structures of related benzothiazolium derivatives, see: Quist et al. (2009).
2. Experimental
2.1. Crystal data
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2.2. Data collection
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2.3. Refinement
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Data collection: SMART (Bruker, 2007); cell SAINT (Bruker, 2007); 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.
Supporting information
CCDC reference: 1023218
10.1107/S1600536814020121/xu5820sup1.cif
contains datablocks I, Global. DOI:Structure factors: contains datablock I. DOI: 10.1107/S1600536814020121/xu5820Isup2.hkl
A mixture of 2,3-dimethylbenzothiazolium iodide (1 mmol), 5-[(2-hydroxyethyl)methylamino]thiophene-2-carbaldehyde (1 mmol) and acetic anhydride (20 ml) was refluxed for 20 min, than poured into a warm solution of potassium iodide (4 mmol) in water (20 ml). The precipitated product was filtered, washed with water and recrystallized from a methanol/water solution. 1H NMR: (400 Hz, DMSO-d6), d(p.p.m.):8.14 (d, 1H), 8.11 (d, 1H), 7.89 (d, 1H), 7.83 (s, 1H), 7.66 (t, 1H), 7.53 (t, 1H), 6.73 (s, 1H), 6.54 (d, 1H), 4.33 (t, 2H), 4.00 (s, 3H), 3.85 (t, 2H), 3.24 (s, 3H), 1.94 (s, 3H).
All hydrogen atoms were placed in geometrically idealized positions and constrained to ride on their parent atoms with O—H = 0.85, C—H = 0.93–0.97 Å, Uiso(H) = 1.5Ueq(C,O) for methyl H and water H atoms, and 1.2Ueq(C) for the others.
Data collection: SMART (Bruker, 2007); cell
SAINT (Bruker, 2007); data reduction: SAINT (Bruker, 2007); 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).Fig. 1. : The molecular structure of the title compound (I) showing 30% probability displacement ellipsoids. |
C19H21N2O2S2+·I−·H2O | Z = 2 |
Mr = 518.43 | F(000) = 520 |
Triclinic, P1 | Dx = 1.566 Mg m−3 |
Hall symbol: -P 1 | Mo Kα radiation, λ = 0.71073 Å |
a = 9.6689 (9) Å | Cell parameters from 3223 reflections |
b = 11.1237 (11) Å | θ = 2.6–26.8° |
c = 11.1693 (11) Å | µ = 1.67 mm−1 |
α = 94.420 (1)° | T = 293 K |
β = 110.067 (1)° | Block, red |
γ = 99.919 (1)° | 0.20 × 0.20 × 0.18 mm |
V = 1099.40 (18) Å3 |
Bruker SMART 1000 CCD area-detector diffractometer | 3638 reflections with I > 2σ(I) |
Radiation source: fine-focus sealed tube | Rint = 0.016 |
Graphite monochromator | θmax = 26.0°, θmin = 1.9° |
phi and ω scans | h = −11→11 |
8450 measured reflections | k = −13→13 |
4211 independent reflections | l = −13→13 |
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)] = 0.028 | Hydrogen site location: inferred from neighbouring sites |
wR(F2) = 0.071 | H-atom parameters constrained |
S = 0.97 | w = 1/[σ2(Fo2) + (0.036P)2 + 0.5766P] where P = (Fo2 + 2Fc2)/3 |
4211 reflections | (Δ/σ)max < 0.001 |
247 parameters | Δρmax = 0.67 e Å−3 |
0 restraints | Δρmin = −0.30 e Å−3 |
C19H21N2O2S2+·I−·H2O | γ = 99.919 (1)° |
Mr = 518.43 | V = 1099.40 (18) Å3 |
Triclinic, P1 | Z = 2 |
a = 9.6689 (9) Å | Mo Kα radiation |
b = 11.1237 (11) Å | µ = 1.67 mm−1 |
c = 11.1693 (11) Å | T = 293 K |
α = 94.420 (1)° | 0.20 × 0.20 × 0.18 mm |
β = 110.067 (1)° |
Bruker SMART 1000 CCD area-detector diffractometer | 3638 reflections with I > 2σ(I) |
8450 measured reflections | Rint = 0.016 |
4211 independent reflections |
R[F2 > 2σ(F2)] = 0.028 | 0 restraints |
wR(F2) = 0.071 | H-atom parameters constrained |
S = 0.97 | Δρmax = 0.67 e Å−3 |
4211 reflections | Δρmin = −0.30 e Å−3 |
247 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 | 0.8392 (4) | 1.1137 (3) | 1.1880 (3) | 0.0617 (8) | |
H1 | 0.9151 | 1.1225 | 1.1540 | 0.074* | |
C2 | 0.8380 (4) | 1.2036 (3) | 1.2804 (4) | 0.0735 (10) | |
H2 | 0.9138 | 1.2747 | 1.3076 | 0.088* | |
C3 | 0.7274 (4) | 1.1903 (3) | 1.3330 (3) | 0.0710 (9) | |
H3 | 0.7318 | 1.2513 | 1.3968 | 0.085* | |
C4 | 0.6105 (4) | 1.0881 (3) | 1.2926 (3) | 0.0608 (8) | |
H4 | 0.5353 | 1.0797 | 1.3274 | 0.073* | |
C5 | 0.6088 (3) | 0.9985 (2) | 1.1986 (3) | 0.0476 (6) | |
C6 | 0.7227 (3) | 1.0101 (3) | 1.1481 (3) | 0.0483 (6) | |
C7 | 0.8124 (4) | 0.8983 (3) | 0.9953 (3) | 0.0698 (9) | |
H7A | 0.7863 | 0.8181 | 0.9452 | 0.105* | |
H7B | 0.9112 | 0.9100 | 1.0600 | 0.105* | |
H7C | 0.8113 | 0.9604 | 0.9401 | 0.105* | |
C8 | 0.5782 (3) | 0.8216 (2) | 1.0354 (2) | 0.0432 (6) | |
C9 | 0.5304 (3) | 0.7106 (3) | 0.9491 (3) | 0.0481 (6) | |
H9 | 0.5890 | 0.6925 | 0.9021 | 0.058* | |
C10 | 0.4006 (3) | 0.6289 (3) | 0.9325 (3) | 0.0485 (6) | |
H10 | 0.3468 | 0.6512 | 0.9824 | 0.058* | |
C11 | 0.3379 (3) | 0.5172 (3) | 0.8514 (3) | 0.0498 (6) | |
C12 | 0.2052 (3) | 0.4370 (3) | 0.8388 (3) | 0.0565 (7) | |
H12 | 0.1471 | 0.4533 | 0.8869 | 0.068* | |
C13 | 0.1650 (3) | 0.3322 (3) | 0.7507 (3) | 0.0553 (7) | |
H13 | 0.0780 | 0.2720 | 0.7329 | 0.066* | |
C14 | 0.2699 (3) | 0.3259 (3) | 0.6907 (3) | 0.0481 (6) | |
C15 | 0.1367 (4) | 0.1291 (3) | 0.5589 (3) | 0.0627 (8) | |
H15A | 0.1256 | 0.0933 | 0.6314 | 0.094* | |
H15B | 0.1532 | 0.0685 | 0.5022 | 0.094* | |
H15C | 0.0469 | 0.1569 | 0.5134 | 0.094* | |
C16 | 0.3834 (4) | 0.2325 (3) | 0.5509 (3) | 0.0616 (8) | |
H16A | 0.4097 | 0.1522 | 0.5533 | 0.074* | |
H16B | 0.4725 | 0.2934 | 0.6045 | 0.074* | |
C17 | 0.3371 (4) | 0.2598 (3) | 0.4147 (3) | 0.0679 (9) | |
H17A | 0.4175 | 0.2563 | 0.3821 | 0.081* | |
H17B | 0.2482 | 0.1996 | 0.3597 | 0.081* | |
C18 | 0.2295 (4) | 0.4128 (3) | 0.3042 (4) | 0.0652 (9) | |
C19 | 0.1969 (5) | 0.5379 (4) | 0.3189 (5) | 0.1004 (14) | |
H19A | 0.1788 | 0.5703 | 0.2390 | 0.151* | |
H19B | 0.2815 | 0.5915 | 0.3852 | 0.151* | |
H19C | 0.1093 | 0.5326 | 0.3420 | 0.151* | |
I1 | 0.77902 (2) | 0.097609 (18) | 0.70194 (2) | 0.06164 (9) | |
N1 | 0.7029 (3) | 0.9082 (2) | 1.0575 (2) | 0.0474 (5) | |
N2 | 0.2650 (3) | 0.2336 (2) | 0.6039 (2) | 0.0543 (6) | |
O1 | 0.3053 (3) | 0.38152 (19) | 0.4157 (2) | 0.0676 (6) | |
O2 | 0.0975 (4) | 0.6590 (3) | 0.0227 (3) | 0.1165 (11) | |
H2A | 0.0901 | 0.7284 | 0.0548 | 0.175* | |
H2C | 0.0115 | 0.6207 | −0.0300 | 0.175* | |
O3 | 0.1931 (4) | 0.3467 (3) | 0.2039 (3) | 0.1068 (10) | |
S1 | 0.47604 (8) | 0.86129 (6) | 1.12820 (7) | 0.04896 (17) | |
S2 | 0.41617 (9) | 0.45592 (7) | 0.74660 (7) | 0.05390 (18) |
U11 | U22 | U33 | U12 | U13 | U23 | |
C1 | 0.0601 (19) | 0.0565 (18) | 0.0615 (19) | 0.0025 (15) | 0.0177 (16) | 0.0112 (15) |
C2 | 0.076 (2) | 0.0509 (19) | 0.074 (2) | −0.0031 (17) | 0.0110 (19) | 0.0046 (16) |
C3 | 0.081 (2) | 0.0509 (18) | 0.070 (2) | 0.0110 (17) | 0.0186 (19) | −0.0075 (16) |
C4 | 0.068 (2) | 0.0529 (17) | 0.0599 (18) | 0.0168 (15) | 0.0211 (16) | 0.0001 (14) |
C5 | 0.0508 (16) | 0.0426 (14) | 0.0440 (15) | 0.0127 (12) | 0.0091 (12) | 0.0068 (12) |
C6 | 0.0536 (16) | 0.0468 (15) | 0.0409 (14) | 0.0120 (13) | 0.0110 (12) | 0.0107 (12) |
C7 | 0.066 (2) | 0.082 (2) | 0.066 (2) | 0.0033 (18) | 0.0367 (17) | 0.0024 (17) |
C8 | 0.0467 (15) | 0.0472 (15) | 0.0371 (13) | 0.0148 (12) | 0.0143 (11) | 0.0091 (11) |
C9 | 0.0509 (16) | 0.0527 (16) | 0.0423 (14) | 0.0135 (13) | 0.0187 (12) | 0.0030 (12) |
C10 | 0.0521 (16) | 0.0505 (15) | 0.0436 (15) | 0.0154 (13) | 0.0172 (12) | 0.0015 (12) |
C11 | 0.0511 (16) | 0.0530 (16) | 0.0466 (15) | 0.0145 (13) | 0.0192 (13) | 0.0008 (12) |
C12 | 0.0516 (17) | 0.0603 (18) | 0.0597 (18) | 0.0108 (14) | 0.0255 (14) | −0.0024 (14) |
C13 | 0.0455 (16) | 0.0543 (17) | 0.0610 (18) | 0.0055 (13) | 0.0174 (14) | −0.0010 (14) |
C14 | 0.0468 (15) | 0.0492 (15) | 0.0424 (14) | 0.0137 (13) | 0.0080 (12) | 0.0025 (12) |
C15 | 0.067 (2) | 0.0493 (17) | 0.0566 (18) | 0.0091 (15) | 0.0084 (15) | −0.0061 (14) |
C16 | 0.0627 (19) | 0.0632 (19) | 0.0597 (18) | 0.0244 (16) | 0.0203 (15) | −0.0024 (15) |
C17 | 0.097 (3) | 0.0546 (18) | 0.063 (2) | 0.0304 (18) | 0.0367 (19) | 0.0014 (15) |
C18 | 0.067 (2) | 0.0576 (19) | 0.076 (2) | 0.0120 (16) | 0.0336 (19) | 0.0065 (18) |
C19 | 0.114 (4) | 0.069 (2) | 0.126 (4) | 0.039 (2) | 0.042 (3) | 0.019 (2) |
I1 | 0.06545 (15) | 0.05325 (13) | 0.06963 (15) | 0.00855 (9) | 0.03333 (11) | −0.00352 (9) |
N1 | 0.0494 (13) | 0.0504 (13) | 0.0425 (12) | 0.0090 (11) | 0.0174 (10) | 0.0077 (10) |
N2 | 0.0555 (14) | 0.0523 (14) | 0.0496 (13) | 0.0115 (11) | 0.0149 (11) | −0.0053 (11) |
O1 | 0.0943 (17) | 0.0500 (12) | 0.0587 (13) | 0.0227 (12) | 0.0266 (12) | −0.0024 (10) |
O2 | 0.121 (3) | 0.121 (3) | 0.106 (2) | 0.028 (2) | 0.044 (2) | −0.013 (2) |
O3 | 0.150 (3) | 0.093 (2) | 0.0662 (17) | 0.045 (2) | 0.0181 (18) | −0.0002 (15) |
S1 | 0.0494 (4) | 0.0476 (4) | 0.0501 (4) | 0.0109 (3) | 0.0197 (3) | −0.0004 (3) |
S2 | 0.0526 (4) | 0.0543 (4) | 0.0534 (4) | 0.0047 (3) | 0.0237 (3) | −0.0065 (3) |
C1—C2 | 1.384 (5) | C12—C13 | 1.372 (4) |
C1—C6 | 1.387 (4) | C12—H12 | 0.9300 |
C1—H1 | 0.9300 | C13—C14 | 1.403 (4) |
C2—C3 | 1.379 (5) | C13—H13 | 0.9300 |
C2—H2 | 0.9300 | C14—N2 | 1.340 (3) |
C3—C4 | 1.379 (5) | C14—S2 | 1.741 (3) |
C3—H3 | 0.9300 | C15—N2 | 1.459 (4) |
C4—C5 | 1.385 (4) | C15—H15A | 0.9600 |
C4—H4 | 0.9300 | C15—H15B | 0.9600 |
C5—C6 | 1.391 (4) | C15—H15C | 0.9600 |
C5—S1 | 1.745 (3) | C16—N2 | 1.459 (4) |
C6—N1 | 1.401 (3) | C16—C17 | 1.503 (5) |
C7—N1 | 1.465 (4) | C16—H16A | 0.9700 |
C7—H7A | 0.9600 | C16—H16B | 0.9700 |
C7—H7B | 0.9600 | C17—O1 | 1.439 (4) |
C7—H7C | 0.9600 | C17—H17A | 0.9700 |
C8—N1 | 1.343 (3) | C17—H17B | 0.9700 |
C8—C9 | 1.408 (4) | C18—O3 | 1.196 (4) |
C8—S1 | 1.740 (3) | C18—O1 | 1.318 (4) |
C9—C10 | 1.362 (4) | C18—C19 | 1.489 (5) |
C9—H9 | 0.9300 | C19—H19A | 0.9600 |
C10—C11 | 1.387 (4) | C19—H19B | 0.9600 |
C10—H10 | 0.9300 | C19—H19C | 0.9600 |
C11—C12 | 1.387 (4) | O2—H2A | 0.8500 |
C11—S2 | 1.752 (3) | O2—H2C | 0.8500 |
C2—C1—C6 | 117.4 (3) | C14—C13—H13 | 123.8 |
C2—C1—H1 | 121.3 | N2—C14—C13 | 126.6 (3) |
C6—C1—H1 | 121.3 | N2—C14—S2 | 122.6 (2) |
C3—C2—C1 | 121.7 (3) | C13—C14—S2 | 110.8 (2) |
C3—C2—H2 | 119.2 | N2—C15—H15A | 109.5 |
C1—C2—H2 | 119.2 | N2—C15—H15B | 109.5 |
C2—C3—C4 | 121.1 (3) | H15A—C15—H15B | 109.5 |
C2—C3—H3 | 119.4 | N2—C15—H15C | 109.5 |
C4—C3—H3 | 119.4 | H15A—C15—H15C | 109.5 |
C3—C4—C5 | 117.8 (3) | H15B—C15—H15C | 109.5 |
C3—C4—H4 | 121.1 | N2—C16—C17 | 112.6 (3) |
C5—C4—H4 | 121.1 | N2—C16—H16A | 109.1 |
C4—C5—C6 | 121.1 (3) | C17—C16—H16A | 109.1 |
C4—C5—S1 | 128.1 (3) | N2—C16—H16B | 109.1 |
C6—C5—S1 | 110.7 (2) | C17—C16—H16B | 109.1 |
C1—C6—C5 | 120.8 (3) | H16A—C16—H16B | 107.8 |
C1—C6—N1 | 126.9 (3) | O1—C17—C16 | 107.5 (2) |
C5—C6—N1 | 112.3 (2) | O1—C17—H17A | 110.2 |
N1—C7—H7A | 109.5 | C16—C17—H17A | 110.2 |
N1—C7—H7B | 109.5 | O1—C17—H17B | 110.2 |
H7A—C7—H7B | 109.5 | C16—C17—H17B | 110.2 |
N1—C7—H7C | 109.5 | H17A—C17—H17B | 108.5 |
H7A—C7—H7C | 109.5 | O3—C18—O1 | 122.8 (3) |
H7B—C7—H7C | 109.5 | O3—C18—C19 | 125.1 (4) |
N1—C8—C9 | 126.3 (2) | O1—C18—C19 | 112.2 (3) |
N1—C8—S1 | 111.84 (19) | C18—C19—H19A | 109.5 |
C9—C8—S1 | 121.9 (2) | C18—C19—H19B | 109.5 |
C10—C9—C8 | 121.8 (2) | H19A—C19—H19B | 109.5 |
C10—C9—H9 | 119.1 | C18—C19—H19C | 109.5 |
C8—C9—H9 | 119.1 | H19A—C19—H19C | 109.5 |
C9—C10—C11 | 128.8 (3) | H19B—C19—H19C | 109.5 |
C9—C10—H10 | 115.6 | C8—N1—C6 | 114.3 (2) |
C11—C10—H10 | 115.6 | C8—N1—C7 | 123.9 (2) |
C10—C11—C12 | 126.4 (3) | C6—N1—C7 | 121.8 (2) |
C10—C11—S2 | 124.4 (2) | C14—N2—C15 | 119.5 (3) |
C12—C11—S2 | 109.2 (2) | C14—N2—C16 | 122.8 (3) |
C13—C12—C11 | 115.8 (3) | C15—N2—C16 | 117.7 (2) |
C13—C12—H12 | 122.1 | C18—O1—C17 | 117.4 (2) |
C11—C12—H12 | 122.1 | H2A—O2—H2C | 109.5 |
C12—C13—C14 | 112.4 (3) | C8—S1—C5 | 90.83 (14) |
C12—C13—H13 | 123.8 | C14—S2—C11 | 91.88 (14) |
C6—C1—C2—C3 | 1.2 (5) | C9—C8—N1—C7 | −1.4 (4) |
C1—C2—C3—C4 | −2.0 (6) | S1—C8—N1—C7 | 178.5 (2) |
C2—C3—C4—C5 | 0.8 (5) | C1—C6—N1—C8 | −178.9 (3) |
C3—C4—C5—C6 | 1.1 (4) | C5—C6—N1—C8 | 1.3 (3) |
C3—C4—C5—S1 | −179.4 (3) | C1—C6—N1—C7 | 2.1 (4) |
C2—C1—C6—C5 | 0.6 (4) | C5—C6—N1—C7 | −177.7 (3) |
C2—C1—C6—N1 | −179.2 (3) | C13—C14—N2—C15 | 3.2 (4) |
C4—C5—C6—C1 | −1.8 (4) | S2—C14—N2—C15 | −178.3 (2) |
S1—C5—C6—C1 | 178.6 (2) | C13—C14—N2—C16 | −177.0 (3) |
C4—C5—C6—N1 | 178.0 (3) | S2—C14—N2—C16 | 1.5 (4) |
S1—C5—C6—N1 | −1.6 (3) | C17—C16—N2—C14 | −105.5 (3) |
N1—C8—C9—C10 | −179.3 (3) | C17—C16—N2—C15 | 74.3 (4) |
S1—C8—C9—C10 | 0.7 (4) | O3—C18—O1—C17 | −3.4 (5) |
C8—C9—C10—C11 | 179.5 (3) | C19—C18—O1—C17 | 177.0 (3) |
C9—C10—C11—C12 | 179.7 (3) | C16—C17—O1—C18 | −164.4 (3) |
C9—C10—C11—S2 | −0.9 (5) | N1—C8—S1—C5 | −0.4 (2) |
C10—C11—C12—C13 | 179.2 (3) | C9—C8—S1—C5 | 179.6 (2) |
S2—C11—C12—C13 | −0.3 (4) | C4—C5—S1—C8 | −178.4 (3) |
C11—C12—C13—C14 | 0.8 (4) | C6—C5—S1—C8 | 1.1 (2) |
C12—C13—C14—N2 | 177.7 (3) | N2—C14—S2—C11 | −178.0 (2) |
C12—C13—C14—S2 | −1.0 (3) | C13—C14—S2—C11 | 0.7 (2) |
N2—C16—C17—O1 | 61.2 (4) | C10—C11—S2—C14 | −179.8 (3) |
C9—C8—N1—C6 | 179.6 (3) | C12—C11—S2—C14 | −0.3 (2) |
S1—C8—N1—C6 | −0.4 (3) |
D—H···A | D—H | H···A | D···A | D—H···A |
O2—H2A···I1i | 0.85 | 2.95 | 3.647 (3) | 140 |
O2—H2C···O3ii | 0.85 | 2.35 | 3.056 (5) | 140 |
C7—H7A···O3i | 0.96 | 2.46 | 3.364 (5) | 157 |
C19—H19A···O2 | 0.96 | 2.60 | 3.554 (6) | 173 |
Symmetry codes: (i) −x+1, −y+1, −z+1; (ii) −x, −y+1, −z. |
D—H···A | D—H | H···A | D···A | D—H···A |
O2—H2A···I1i | 0.85 | 2.95 | 3.647 (3) | 140 |
O2—H2C···O3ii | 0.85 | 2.35 | 3.056 (5) | 140 |
C7—H7A···O3i | 0.96 | 2.46 | 3.364 (5) | 157 |
C19—H19A···O2 | 0.96 | 2.60 | 3.554 (6) | 173 |
Symmetry codes: (i) −x+1, −y+1, −z+1; (ii) −x, −y+1, −z. |
Acknowledgements
This work was supported by the National Natural Science Foundation of China (grant No. 21271004), the Education Committee of Anhui Province, China (grant No. KJ2010A030), and the Undergraduate Innovative Test Program in Anhui University (grant No. 201310357260).
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Interest in organic compounds with non-linear optical (NLO) properties is driven by the prospective of their applications in optical information technologies. The most common design of molecules with large NLO-active comprises strong electron-donors and acceptors connected by a π-conjugated system (Hao et al., 2009; Zhou et al., 2011). Besides, the introduction about the highpolarizability of sulfur atoms in thiophene rings leads to a stabilization of the conjugated chain and to excellent charge transport properties. In the title compound (I) (Fig. 1), the benzothiazolium-CH═CH-thiophene part of the molecule is nearly coplanar (plane of CH═CH makes angles of 0.663 (8)° and 0.847 (1)° with the planes of the benzothiazolium and the thiophene rings), while in related benzothiazolium derivatives (Quist et al. 2009), the corresponding angles are 5.61 (18)° and 1.78 (19)°, respectively.