organic compounds
3-(4-Methoxyphenyl)-1,3-selenazolo[2,3-b][1,3]benzothiazol-4-ium hydrogen sulfate
aBaku State University, Z. Khalilov St 23, Baku, AZ-1148, Azerbaijan, bR.E. Alekseev Nizhny Novgorod State Technical University, 24 Minin St, Nizhny Novgorod, 603950, Russian Federation, and cX-Ray Structural Centre, A.N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, 28 Vavilov St, B-334, Moscow 119991, Russian Federation
*Correspondence e-mail: gunka479@mail.ru
The title compound, C16H12NOSSe+·HSO4−, was obtained from a mixture of 3-(4-methoxyphenyl)[1,3]selenazolo[2,3-b][1,3]benzothiazol-4-ium chloride and potassium hydrogen sulfate. In the cation, the benzene ring is twisted by 71.62 (7)° from the tricycle mean plane. In the crystal, O—H⋯O hydrogen bonds link the anions into chains along [100]. The anions in adjacent chains are linked via weak C—H⋯O hydrogen bonds. The crystal packing exhibits short intermolecular contacts between the chalcogen unit and the O atoms: Se⋯O(anion) 2.713 (3), Se⋯O(cation) 2.987 (3) and S⋯O(anion) 2.958 (3) Å.
Related literature
For details of the synthesis and the biological properties of selenium- and nitrogen-containing heterocycles, see: Back (2009); Mlochowski & Giurg (2009); Mukherjee et al. (2010); Selvakumar et al. (2010). For the synthesis of the starting compound, 3-(4-methoxyphenyl)[1,3]selenazolo[2,3-b][1,3]benzothiazol-4-ium chloride, see: Borisov et al. (2012).
Experimental
Crystal data
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Data collection: SMART (Bruker, 1998); cell SAINT (Bruker, 1998); 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
https://doi.org/10.1107/S1600536813009288/cv5401sup1.cif
contains datablocks global, I. DOI:Structure factors: contains datablock I. DOI: https://doi.org/10.1107/S1600536813009288/cv5401Isup2.hkl
Supporting information file. DOI: https://doi.org/10.1107/S1600536813009288/cv5401Isup3.cml
A mixture of 3-(4-methoxyphenyl)[1,3]selenazolo[2,3-b][1,3]benzothiazol-4-ium chloride (0.19 g, 0.5 mmol) with KHSO4 (0.072 g, 0.53 mmol) in CH3OH (20 ml) was refluxed for 0.5 h to dissolve the starting materials. After that the reaction mixture was concentrated in vacuo. Then CH2Cl2 (20 ml) was added to the solid to give precipitate of KCl, which was separated by filtration. The filtrate was concentrated in vacuo. The solid was re-crystallized from CH2Cl2 to give I as colorless crystals. Yield is 93%. M.p. = 510–512 K. 1H NMR (DMSO-d6, 600 MHz, 302 K): δ = 8.42 (1H, d, J = 8.0, H8), 8.23 (1H, s, H2), 7.63 (1H, t, J = 8.0, H7), 7.59 (2H, d, J = 8.8, H11, H15), 7.48 (1H, t, J = 8.0, H6), 7.25 (2H, d, J = 8.8, H12, H14), 6.81 (1H, d, J = 8.1, H5), 3.87 (3H, s, OMe). Anal. Calcd. for C16H13NO5S2Se: C, 43.45; H, 2.96; N, 3.17. Found: C, 43.37; H, 2.93; N, 3.12.
The hydroxyl hydrogen atom was localized in the difference-Fourier map and included in the
with fixed positional and isotropic displacement parameters [Uiso(H) = 1.5Ueq(O)]. The other hydrogen atoms were placed in calculated positions with C—H = 0.95 Å (CH) and 0.98 Å (CH3) and refined in the riding model with fixed isotropic displacement parameters [Uiso(H) = 1.5Ueq(C) for the CH3 group and 1.2Ueq(C) for the CH groups].In the last years, the selenium- and nitrogen-containing heterocycles have attracted considerable attention owing to the variety of their pharmacological properties (Back, 2009; Mlochowski & Giurg, 2009; Mukherjee et al., 2010; Selvakumar et al., 2010). This article describes the structure of 3-(4-methoxyphenyl)[1,3]selenazolo[2,3-b][1,3]benzothiazol-4-ium hydrogen sulfate, [C16H12NOSSe]+.[HSO4]-, (I), which was obtained by the reaction of 3-(4-methoxyphenyl)[1,3]selenazolo[2,3-b][1,3]benzothiazol-4-ium chloride (Borisov et al., 2012) with potassium hydrogen sulfate (Figure 1).
The compound I is a salt consisting of 3-(4-methoxyphenyl)[1,3]selenazolo[2,3-b][1,3]benzothiazol-4-ium cation and hydrogen sulfate anion (Figure 2). The cation of I comprises a fused tricyclic system containing two five-membered rings (1,3-selenazole and 1,3-thiazole) and one six-membered ring (benzene). The tricyclic system is practically planar (r.m.s deviation = 0.020 Å). The methoxy group is almost coplanar to the plane of the phenyl substituent (the C12—C13—O1—C16 torsion angle is 1.7 (5)°). The dihedral angle between the mean planes of the tricyclic system and methoxyphenyl fragment is 71.82 (6)°.
In the crystal, anions form chains along the a axis through the intermolecular O—H···O hydrogen bonding interactions (Table 1, Figure 3). Weak intermolecular C—H···O hydrogen bonds (Table 1, Figure 3) as well as non-valent attractive Se···O (Se1···O3b 2.713 (3), Se1···O1c 2.987 (3), Se1···O3 3.366 (3), Se1···O5b 3.423 (3) Å) and S···O [S9···O2a 2.958 (3) and S9···O1c 3.050 (3) Å] interactions consolidate further the three-dimensional-crystal packing (Figure 3) [symmetry codes: (a) x, y, z + 1; (b) x–1, y, z; (c) –x, y + 0.5, –z + 1].
For details of the synthesis and the biological properties of selenium- and nitrogen-containing heterocycles, see: Back (2009); Mlochowski & Giurg (2009); Mukherjee et al. (2010); Selvakumar et al. (2010). For the synthesis of the starting compound, 3-(4-methoxyphenyl)[1,3]selenazolo[2,3-b][1,3]benzothiazol-4-ium chloride, see: Borisov et al. (2012).
Data collection: SMART (Bruker, 1998); cell
SAINT (Bruker, 1998); data reduction: SAINT (Bruker, 1998); 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).C16H12NOSSe+·HO4S− | F(000) = 444 |
Mr = 442.35 | Dx = 1.840 Mg m−3 |
Monoclinic, P21 | Mo Kα radiation, λ = 0.71073 Å |
Hall symbol: P 2yb | Cell parameters from 2780 reflections |
a = 4.6408 (8) Å | θ = 2.2–28.3° |
b = 18.263 (3) Å | µ = 2.64 mm−1 |
c = 9.4482 (16) Å | T = 100 K |
β = 94.294 (3)° | Plate, colourless |
V = 798.6 (2) Å3 | 0.30 × 0.18 × 0.02 mm |
Z = 2 |
Bruker SMART 1K CCD diffractometer | 4145 independent reflections |
Radiation source: fine-focus sealed tube | 3555 reflections with I > 2σ(I) |
Graphite monochromator | Rint = 0.052 |
φ and ω scans | θmax = 29.0°, θmin = 2.2° |
Absorption correction: multi-scan (SADABS; Sheldrick, 1998) | h = −6→6 |
Tmin = 0.505, Tmax = 0.949 | k = −24→24 |
8638 measured reflections | l = −12→12 |
Refinement on F2 | Secondary atom site location: difference Fourier map |
Least-squares matrix: full | Hydrogen site location: difference Fourier map |
R[F2 > 2σ(F2)] = 0.040 | H-atom parameters constrained |
wR(F2) = 0.085 | w = 1/[σ2(Fo2) + (0.001P)2] where P = (Fo2 + 2Fc2)/3 |
S = 0.97 | (Δ/σ)max < 0.001 |
4145 reflections | Δρmax = 0.74 e Å−3 |
227 parameters | Δρmin = −0.99 e Å−3 |
1 restraint | Absolute structure: Flack (1983), 2075 Friedel pairs |
Primary atom site location: structure-invariant direct methods | Absolute structure parameter: 0.038 (9) |
C16H12NOSSe+·HO4S− | V = 798.6 (2) Å3 |
Mr = 442.35 | Z = 2 |
Monoclinic, P21 | Mo Kα radiation |
a = 4.6408 (8) Å | µ = 2.64 mm−1 |
b = 18.263 (3) Å | T = 100 K |
c = 9.4482 (16) Å | 0.30 × 0.18 × 0.02 mm |
β = 94.294 (3)° |
Bruker SMART 1K CCD diffractometer | 4145 independent reflections |
Absorption correction: multi-scan (SADABS; Sheldrick, 1998) | 3555 reflections with I > 2σ(I) |
Tmin = 0.505, Tmax = 0.949 | Rint = 0.052 |
8638 measured reflections |
R[F2 > 2σ(F2)] = 0.040 | H-atom parameters constrained |
wR(F2) = 0.085 | Δρmax = 0.74 e Å−3 |
S = 0.97 | Δρmin = −0.99 e Å−3 |
4145 reflections | Absolute structure: Flack (1983), 2075 Friedel pairs |
227 parameters | Absolute structure parameter: 0.038 (9) |
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 | ||
Se1 | −0.35253 (8) | 0.72534 (2) | 0.59512 (4) | 0.01626 (9) | |
C2 | −0.3094 (9) | 0.6448 (2) | 0.4783 (4) | 0.0173 (8) | |
H2 | −0.4181 | 0.6389 | 0.3898 | 0.021* | |
C3 | −0.1125 (9) | 0.5955 (2) | 0.5288 (4) | 0.0165 (8) | |
N4 | 0.0200 (7) | 0.61551 (17) | 0.6630 (4) | 0.0147 (7) | |
C4A | 0.2352 (8) | 0.5819 (2) | 0.7546 (4) | 0.0149 (8) | |
C5 | 0.3787 (8) | 0.5164 (2) | 0.7368 (4) | 0.0168 (8) | |
H5 | 0.3330 | 0.4866 | 0.6559 | 0.020* | |
C6 | 0.5907 (9) | 0.4956 (2) | 0.8401 (4) | 0.0186 (9) | |
H6 | 0.6911 | 0.4508 | 0.8296 | 0.022* | |
C7 | 0.6596 (9) | 0.5392 (2) | 0.9593 (4) | 0.0182 (8) | |
H7 | 0.8068 | 0.5238 | 1.0282 | 0.022* | |
C8 | 0.5155 (9) | 0.6048 (2) | 0.9785 (5) | 0.0180 (8) | |
H8 | 0.5608 | 0.6346 | 1.0596 | 0.022* | |
C8A | 0.3030 (8) | 0.6250 (2) | 0.8747 (4) | 0.0146 (8) | |
S9 | 0.0967 (2) | 0.70586 (5) | 0.87325 (11) | 0.0174 (2) | |
C9A | −0.0728 (8) | 0.6813 (2) | 0.7133 (4) | 0.0163 (8) | |
C10 | −0.0297 (8) | 0.5298 (2) | 0.4485 (4) | 0.0158 (8) | |
C11 | 0.1148 (8) | 0.5411 (2) | 0.3255 (4) | 0.0172 (8) | |
H11 | 0.1567 | 0.5896 | 0.2972 | 0.021* | |
C12 | 0.1981 (9) | 0.4824 (2) | 0.2441 (4) | 0.0182 (8) | |
H12 | 0.3004 | 0.4908 | 0.1622 | 0.022* | |
C13 | 0.1307 (8) | 0.4114 (2) | 0.2833 (4) | 0.0156 (8) | |
C14 | −0.0266 (9) | 0.3998 (2) | 0.4026 (5) | 0.0205 (9) | |
H14 | −0.0819 | 0.3516 | 0.4270 | 0.025* | |
C15 | −0.1006 (8) | 0.4583 (2) | 0.4841 (4) | 0.0192 (9) | |
H15 | −0.2019 | 0.4498 | 0.5663 | 0.023* | |
O1 | 0.2001 (6) | 0.35027 (15) | 0.2094 (3) | 0.0199 (6) | |
C16 | 0.3593 (9) | 0.3608 (2) | 0.0861 (4) | 0.0198 (9) | |
H16A | 0.3901 | 0.3134 | 0.0411 | 0.030* | |
H16B | 0.5466 | 0.3833 | 0.1145 | 0.030* | |
H16C | 0.2497 | 0.3930 | 0.0188 | 0.030* | |
S1 | 0.2806 (2) | 0.78392 (5) | 0.26484 (11) | 0.0180 (2) | |
O2 | 0.3759 (7) | 0.7346 (2) | 0.1596 (3) | 0.0333 (8) | |
O3 | 0.2090 (6) | 0.74833 (15) | 0.3937 (3) | 0.0228 (6) | |
O4 | 0.0395 (6) | 0.83188 (17) | 0.2081 (3) | 0.0256 (7) | |
O5 | 0.5298 (6) | 0.83793 (17) | 0.3069 (4) | 0.0277 (7) | |
H5O | 0.6634 | 0.8370 | 0.2413 | 0.042* |
U11 | U22 | U33 | U12 | U13 | U23 | |
Se1 | 0.01455 (16) | 0.01458 (16) | 0.02001 (18) | 0.00098 (18) | 0.00359 (13) | 0.00010 (19) |
C2 | 0.0167 (19) | 0.018 (2) | 0.018 (2) | −0.0019 (16) | 0.0052 (16) | 0.0018 (16) |
C3 | 0.0159 (19) | 0.0149 (18) | 0.019 (2) | −0.0012 (15) | 0.0058 (16) | 0.0005 (16) |
N4 | 0.0130 (15) | 0.0124 (15) | 0.0192 (17) | −0.0010 (13) | 0.0049 (13) | −0.0009 (13) |
C4A | 0.0115 (18) | 0.0145 (18) | 0.019 (2) | −0.0025 (15) | 0.0036 (15) | −0.0001 (15) |
C5 | 0.017 (2) | 0.0164 (19) | 0.018 (2) | −0.0027 (16) | 0.0047 (16) | −0.0004 (16) |
C6 | 0.0153 (19) | 0.0165 (19) | 0.025 (2) | 0.0015 (16) | 0.0085 (17) | 0.0024 (17) |
C7 | 0.0135 (19) | 0.022 (2) | 0.019 (2) | 0.0007 (16) | 0.0020 (16) | 0.0031 (17) |
C8 | 0.016 (2) | 0.0172 (19) | 0.021 (2) | −0.0006 (16) | 0.0050 (17) | 0.0012 (17) |
C8A | 0.0156 (19) | 0.0124 (18) | 0.016 (2) | 0.0009 (15) | 0.0053 (15) | −0.0010 (15) |
S9 | 0.0163 (4) | 0.0168 (5) | 0.0192 (5) | 0.0003 (3) | 0.0028 (4) | −0.0013 (4) |
C9A | 0.0155 (19) | 0.0165 (18) | 0.0175 (19) | −0.0055 (16) | 0.0054 (15) | −0.0042 (16) |
C10 | 0.0132 (18) | 0.0137 (18) | 0.021 (2) | −0.0009 (15) | 0.0019 (16) | −0.0011 (16) |
C11 | 0.0149 (19) | 0.0165 (19) | 0.020 (2) | −0.0005 (16) | 0.0007 (16) | 0.0008 (16) |
C12 | 0.018 (2) | 0.019 (2) | 0.018 (2) | −0.0002 (16) | 0.0034 (16) | 0.0003 (16) |
C13 | 0.0148 (19) | 0.0155 (19) | 0.016 (2) | 0.0012 (15) | 0.0000 (15) | −0.0035 (16) |
C14 | 0.019 (2) | 0.018 (2) | 0.025 (2) | −0.0031 (17) | 0.0067 (17) | 0.0013 (17) |
C15 | 0.0171 (19) | 0.021 (2) | 0.021 (2) | −0.0022 (16) | 0.0055 (17) | −0.0016 (17) |
O1 | 0.0223 (15) | 0.0163 (14) | 0.0223 (15) | −0.0003 (12) | 0.0096 (13) | −0.0003 (12) |
C16 | 0.021 (2) | 0.021 (2) | 0.018 (2) | −0.0003 (17) | 0.0067 (17) | −0.0029 (17) |
S1 | 0.0164 (5) | 0.0182 (5) | 0.0197 (5) | 0.0014 (4) | 0.0029 (4) | 0.0002 (4) |
O2 | 0.0372 (17) | 0.036 (2) | 0.0270 (14) | 0.0050 (17) | 0.0053 (13) | −0.0125 (16) |
O3 | 0.0204 (15) | 0.0232 (15) | 0.0252 (15) | 0.0021 (12) | 0.0041 (12) | 0.0073 (12) |
O4 | 0.0152 (15) | 0.0258 (16) | 0.0353 (18) | 0.0019 (12) | −0.0007 (13) | 0.0102 (14) |
O5 | 0.0167 (15) | 0.0263 (17) | 0.0406 (18) | −0.0014 (13) | 0.0064 (14) | −0.0019 (15) |
Se1—C9A | 1.834 (4) | C10—C15 | 1.394 (5) |
Se1—C2 | 1.859 (4) | C10—C11 | 1.399 (6) |
C2—C3 | 1.345 (5) | C11—C12 | 1.391 (6) |
C2—H2 | 0.9500 | C11—H11 | 0.9500 |
C3—N4 | 1.415 (5) | C12—C13 | 1.390 (6) |
C3—C10 | 1.485 (5) | C12—H12 | 0.9500 |
N4—C9A | 1.373 (5) | C13—O1 | 1.367 (5) |
N4—C4A | 1.412 (5) | C13—C14 | 1.404 (6) |
C4A—C5 | 1.385 (5) | C14—C15 | 1.376 (6) |
C4A—C8A | 1.397 (5) | C14—H14 | 0.9500 |
C5—C6 | 1.386 (6) | C15—H15 | 0.9500 |
C5—H5 | 0.9500 | O1—C16 | 1.439 (5) |
C6—C7 | 1.397 (6) | C16—H16A | 0.9800 |
C6—H6 | 0.9500 | C16—H16B | 0.9800 |
C7—C8 | 1.391 (6) | C16—H16C | 0.9800 |
C7—H7 | 0.9500 | S1—O2 | 1.436 (3) |
C8—C8A | 1.388 (6) | S1—O3 | 1.441 (3) |
C8—H8 | 0.9500 | S1—O4 | 1.489 (3) |
C8A—S9 | 1.759 (4) | S1—O5 | 1.549 (3) |
S9—C9A | 1.710 (4) | O5—H5O | 0.9086 |
C9A—Se1—C2 | 84.92 (18) | C15—C10—C11 | 118.3 (4) |
C3—C2—Se1 | 114.8 (3) | C15—C10—C3 | 123.9 (4) |
C3—C2—H2 | 122.6 | C11—C10—C3 | 117.7 (3) |
Se1—C2—H2 | 122.6 | C12—C11—C10 | 121.1 (4) |
C2—C3—N4 | 112.5 (4) | C12—C11—H11 | 119.5 |
C2—C3—C10 | 123.7 (4) | C10—C11—H11 | 119.5 |
N4—C3—C10 | 123.7 (3) | C11—C12—C13 | 119.6 (4) |
C9A—N4—C4A | 113.2 (3) | C11—C12—H12 | 120.2 |
C9A—N4—C3 | 114.2 (3) | C13—C12—H12 | 120.2 |
C4A—N4—C3 | 132.6 (3) | O1—C13—C12 | 124.0 (4) |
C5—C4A—C8A | 120.3 (4) | O1—C13—C14 | 116.3 (4) |
C5—C4A—N4 | 128.7 (4) | C12—C13—C14 | 119.7 (4) |
C8A—C4A—N4 | 111.0 (3) | C15—C14—C13 | 119.9 (4) |
C4A—C5—C6 | 118.3 (4) | C15—C14—H14 | 120.0 |
C4A—C5—H5 | 120.9 | C13—C14—H14 | 120.0 |
C6—C5—H5 | 120.9 | C14—C15—C10 | 121.3 (4) |
C5—C6—C7 | 121.3 (4) | C14—C15—H15 | 119.4 |
C5—C6—H6 | 119.4 | C10—C15—H15 | 119.4 |
C7—C6—H6 | 119.4 | C13—O1—C16 | 117.3 (3) |
C8—C7—C6 | 120.9 (4) | O1—C16—H16A | 109.5 |
C8—C7—H7 | 119.6 | O1—C16—H16B | 109.5 |
C6—C7—H7 | 119.6 | H16A—C16—H16B | 109.5 |
C8A—C8—C7 | 117.4 (4) | O1—C16—H16C | 109.5 |
C8A—C8—H8 | 121.3 | H16A—C16—H16C | 109.5 |
C7—C8—H8 | 121.3 | H16B—C16—H16C | 109.5 |
C8—C8A—C4A | 121.9 (4) | O2—S1—O3 | 113.9 (2) |
C8—C8A—S9 | 125.9 (3) | O2—S1—O4 | 112.44 (19) |
C4A—C8A—S9 | 112.2 (3) | O3—S1—O4 | 110.80 (18) |
C9A—S9—C8A | 90.01 (19) | O2—S1—O5 | 108.31 (19) |
N4—C9A—S9 | 113.6 (3) | O3—S1—O5 | 106.59 (18) |
N4—C9A—Se1 | 113.5 (3) | O4—S1—O5 | 104.13 (18) |
S9—C9A—Se1 | 132.9 (2) | S1—O5—H5O | 110.3 |
C9A—Se1—C2—C3 | 0.2 (3) | C4A—N4—C9A—S9 | 0.3 (4) |
Se1—C2—C3—N4 | 0.6 (4) | C3—N4—C9A—S9 | −178.3 (3) |
Se1—C2—C3—C10 | −175.7 (3) | C4A—N4—C9A—Se1 | −180.0 (3) |
C2—C3—N4—C9A | −1.3 (5) | C3—N4—C9A—Se1 | 1.5 (4) |
C10—C3—N4—C9A | 174.9 (4) | C8A—S9—C9A—N4 | 0.1 (3) |
C2—C3—N4—C4A | −179.5 (4) | C8A—S9—C9A—Se1 | −179.6 (3) |
C10—C3—N4—C4A | −3.3 (6) | C2—Se1—C9A—N4 | −0.9 (3) |
C9A—N4—C4A—C5 | −179.1 (4) | C2—Se1—C9A—S9 | 178.8 (3) |
C3—N4—C4A—C5 | −0.9 (7) | C2—C3—C10—C15 | −110.1 (5) |
C9A—N4—C4A—C8A | −0.6 (4) | N4—C3—C10—C15 | 74.1 (5) |
C3—N4—C4A—C8A | 177.6 (4) | C2—C3—C10—C11 | 66.4 (5) |
C8A—C4A—C5—C6 | −0.5 (6) | N4—C3—C10—C11 | −109.4 (4) |
N4—C4A—C5—C6 | 177.9 (4) | C15—C10—C11—C12 | −2.9 (6) |
C4A—C5—C6—C7 | −0.1 (6) | C3—C10—C11—C12 | −179.6 (4) |
C5—C6—C7—C8 | 0.4 (6) | C10—C11—C12—C13 | 1.6 (6) |
C6—C7—C8—C8A | −0.2 (6) | C11—C12—C13—O1 | 179.2 (4) |
C7—C8—C8A—C4A | −0.3 (6) | C11—C12—C13—C14 | 1.5 (6) |
C7—C8—C8A—S9 | −178.7 (3) | O1—C13—C14—C15 | 178.9 (4) |
C5—C4A—C8A—C8 | 0.7 (6) | C12—C13—C14—C15 | −3.3 (6) |
N4—C4A—C8A—C8 | −177.9 (4) | C13—C14—C15—C10 | 1.9 (6) |
C5—C4A—C8A—S9 | 179.3 (3) | C11—C10—C15—C14 | 1.2 (6) |
N4—C4A—C8A—S9 | 0.7 (4) | C3—C10—C15—C14 | 177.7 (4) |
C8—C8A—S9—C9A | 178.1 (4) | C12—C13—O1—C16 | 1.7 (5) |
C4A—C8A—S9—C9A | −0.4 (3) | C14—C13—O1—C16 | 179.5 (3) |
D—H···A | D—H | H···A | D···A | D—H···A |
O5—H5O···O4i | 0.91 | 1.80 | 2.610 (4) | 147 |
C6—H6···O4ii | 0.95 | 2.54 | 3.494 (5) | 178 |
C8—H8···O2iii | 0.95 | 2.26 | 3.022 (5) | 137 |
Symmetry codes: (i) x+1, y, z; (ii) −x+1, y−1/2, −z+1; (iii) x, y, z+1. |
Experimental details
Crystal data | |
Chemical formula | C16H12NOSSe+·HO4S− |
Mr | 442.35 |
Crystal system, space group | Monoclinic, P21 |
Temperature (K) | 100 |
a, b, c (Å) | 4.6408 (8), 18.263 (3), 9.4482 (16) |
β (°) | 94.294 (3) |
V (Å3) | 798.6 (2) |
Z | 2 |
Radiation type | Mo Kα |
µ (mm−1) | 2.64 |
Crystal size (mm) | 0.30 × 0.18 × 0.02 |
Data collection | |
Diffractometer | Bruker SMART 1K CCD |
Absorption correction | Multi-scan (SADABS; Sheldrick, 1998) |
Tmin, Tmax | 0.505, 0.949 |
No. of measured, independent and observed [I > 2σ(I)] reflections | 8638, 4145, 3555 |
Rint | 0.052 |
(sin θ/λ)max (Å−1) | 0.682 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.040, 0.085, 0.97 |
No. of reflections | 4145 |
No. of parameters | 227 |
No. of restraints | 1 |
H-atom treatment | H-atom parameters constrained |
Δρmax, Δρmin (e Å−3) | 0.74, −0.99 |
Absolute structure | Flack (1983), 2075 Friedel pairs |
Absolute structure parameter | 0.038 (9) |
Computer programs: SMART (Bruker, 1998), SAINT (Bruker, 1998), SHELXTL (Sheldrick, 2008).
D—H···A | D—H | H···A | D···A | D—H···A |
O5—H5O···O4i | 0.91 | 1.80 | 2.610 (4) | 147 |
C6—H6···O4ii | 0.95 | 2.54 | 3.494 (5) | 178 |
C8—H8···O2iii | 0.95 | 2.26 | 3.022 (5) | 137 |
Symmetry codes: (i) x+1, y, z; (ii) −x+1, y−1/2, −z+1; (iii) x, y, z+1. |
Acknowledgements
We thank Professor Abel M. Maharramov for fruitful discussions and help in this work.
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.
In the last years, the selenium- and nitrogen-containing heterocycles have attracted considerable attention owing to the variety of their pharmacological properties (Back, 2009; Mlochowski & Giurg, 2009; Mukherjee et al., 2010; Selvakumar et al., 2010). This article describes the structure of 3-(4-methoxyphenyl)[1,3]selenazolo[2,3-b][1,3]benzothiazol-4-ium hydrogen sulfate, [C16H12NOSSe]+.[HSO4]-, (I), which was obtained by the reaction of 3-(4-methoxyphenyl)[1,3]selenazolo[2,3-b][1,3]benzothiazol-4-ium chloride (Borisov et al., 2012) with potassium hydrogen sulfate (Figure 1).
The compound I is a salt consisting of 3-(4-methoxyphenyl)[1,3]selenazolo[2,3-b][1,3]benzothiazol-4-ium cation and hydrogen sulfate anion (Figure 2). The cation of I comprises a fused tricyclic system containing two five-membered rings (1,3-selenazole and 1,3-thiazole) and one six-membered ring (benzene). The tricyclic system is practically planar (r.m.s deviation = 0.020 Å). The methoxy group is almost coplanar to the plane of the phenyl substituent (the C12—C13—O1—C16 torsion angle is 1.7 (5)°). The dihedral angle between the mean planes of the tricyclic system and methoxyphenyl fragment is 71.82 (6)°.
In the crystal, anions form chains along the a axis through the intermolecular O—H···O hydrogen bonding interactions (Table 1, Figure 3). Weak intermolecular C—H···O hydrogen bonds (Table 1, Figure 3) as well as non-valent attractive Se···O (Se1···O3b 2.713 (3), Se1···O1c 2.987 (3), Se1···O3 3.366 (3), Se1···O5b 3.423 (3) Å) and S···O [S9···O2a 2.958 (3) and S9···O1c 3.050 (3) Å] interactions consolidate further the three-dimensional-crystal packing (Figure 3) [symmetry codes: (a) x, y, z + 1; (b) x–1, y, z; (c) –x, y + 0.5, –z + 1].