organic compounds
10-(1,2,2-Trichlorovinyl)-10H-phenothiazine 5,5-dioxide
aDepartment of Material Science and Chemistry, Wakayama University, Sakaedani, Wakayama 640-8510, Japan
*Correspondence e-mail: okuno@center.wakayama-u.ac.jp
The title compound, C14H8Cl3NO2S, forms a dimeric structure by intermolecular Cl⋯O=S interactions. The dimers make a two-dimensional array parallel to (101) by other Cl⋯O=S interactions. The two-dimensional network is found to be kept unchanged, although the trichlorovinyl group is disordered (relative occupancies 0.65:0.35).
Related literature
For related reviews of halogen bonding, see: Auffinger et al. (2004); Politzer et al. (2007). For related structures of phenothiazine 5,5-dioxide compounds, see: Harrison et al. (2007); Kamtekar et al. (2011); Siddegowda et al. (2011a,b); Zhu et al. (2007). For related structures with intermolecular Cl⋯O=S contacts, see: Bandera et al. (2007); Choi et al. (2008); Douglas et al. (1993); Jovanovic et al. (1986). For the preparation of the title compound, see: Okuno et al. (2006).
Experimental
Crystal data
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Refinement
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Data collection: CrystalClear (Rigaku, 2008); cell CrystalClear; data reduction: CrystalClear; program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: ORTEP-3 (Farrugia, 1997); software used to prepare material for publication: CrystalStructure (Rigaku, 2010).
Supporting information
https://doi.org/10.1107/S160053681203245X/ff2076sup1.cif
contains datablocks global, I. DOI:Structure factors: contains datablock I. DOI: https://doi.org/10.1107/S160053681203245X/ff2076Isup2.hkl
Supporting information file. DOI: https://doi.org/10.1107/S160053681203245X/ff2076Isup3.cml
The title compound was prepared according to a reported procedure (Okuno et al., 2006). The single crystals with sufficient quality for X-ray analysis were obtained by concentration of a dichloromethane solution.
The occupancies of disordered trichlorovinyl groups were determined to 0.65 for A and 0.35 for B as both disordered forms have similar thermal parameters. All H atoms were placed at ideal positions and were treated as riding on their parent C atoms. Uiso(H) values of the H atoms were set at 1.2Ueq(parent atom).
Halogen bondings between halogen atoms and Lewis bases have been paid attention from the viewpoint of protein chemistry because of their use for the design of supramolecular assemblies (Auffinger et al. 2004; Politzer et al., 2007). However, Cl···O=S interactions in heterocycles such as thiophenes and phenothiazines have been reported only in two cases (Douglas et al., 1993; Jovanovic et al., 1986). This is the first report of Cl···O=S interactions in phenothiazine 5,5-dioxide compounds.
The trichlorovinyl group is disordered to give two orientations, which are represented by the form A (C13A/C14A/Cl3A) and the form B (C13B/C14B/Cl3B) (Figure 1). The occupancies of A and B are determined to 0.65 for A and 0.35 for B as both disordered forms have similar thermal parameters. Both trichlorovinyl groups have a planar structure (the N1/C13A/C14A/Cl1/Cl2/Cl3A plane: r.m.s. deviation = 0.0465 Å and the N1/C13B/C14B/Cl1/Cl2/Cl3B plane: r.m.s. deviation = 0.0521 Å). The structures around N1 are pyramidal in A and planar in B, where the distances of N1 to the C1/C12/C13A plane and the C1/C12/C13B plane are 0.212 (2) Å and 0.071 (2) Å, respectively.
The phenothiazine moiety has a butterfly structure, where the dihedral angle between two benzene rings (the C1—C6 plane: r.m.s. deviation = 0.0103 Å and the C7—C12 plane: r.m.s. deviation = 0.0114 Å) is 162.51 (9)°. The central six-membered ring (the N1/C1/C6/S1/C7/C12 ring) has a boat form. The length of the equatorial S1—O2 bond is in the range of the reported values (1.4293 (14) Å - 1.4421 (11) Å) of phenothiazine 5,5-dioxide compounds (Harrison et al., 2007; Kamtekar et al., 2011; Siddegowda et al., 2011a,b; Zhu et al., 2007), while the axial S1—O1 bond shows a longer bond length compared with that of the reported values (1.4294 (13) Å - 1.4495 (17) Å). This elongation may be caused by the intermolecular Cl···O=S interactions.
The molecules form a dimeric structure by the intermolecular Cl2ii···O1 interactions [Symmetry code: (ii) -x, -y, -z + 1]. The dimers make a two-dimensional array on the (101) plane by other Cl···O=S interactions (Figure 2). The intermolecular Cl···O=S distances are in the range of reported values (2.741 (3) Å - 3.267 (2) Å (Bandera et al., 2007; Choi et al., 2008)). Remarkable contacts cannot be observed between the arrays. The two-dimensional network is found to be kept unchanged, although the trichlorovinyl group is disordered.
For related reviews of halogen bonding, see: Auffinger et al. (2004); Politzer et al. (2007). For related structures of phenothiazine 5,5-dioxide compounds, see: Harrison et al. (2007); Kamtekar et al. (2011); Siddegowda et al. (2011a,b); Zhu et al. (2007). For related structures with intermolecular Cl···O=S contacts, see: Bandera et al. (2007); Choi et al. (2008); Douglas et al. (1993); Jovanovic et al. (1986). For the preparation of the title compound, see: Okuno et al. (2006).
Data collection: CrystalClear (Rigaku, 2008); cell
CrystalClear (Rigaku, 2008); data reduction: CrystalClear (Rigaku, 2008); program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: ORTEP-3 (Farrugia, 1997); software used to prepare material for publication: CrystalStructure (Rigaku, 2010).Fig. 1. The asymmetric unit of the title compound with atom-numbering scheme. Displacement ellipsoids are drawn at the 50% probability level and H atoms are shown as small spheres. Disordered atoms are discriminated with A/B notation, and the minor disordered form is drawn as open bonds. | |
Fig. 2. A view of the two-dimensional array on the (101) plane. Hydrogen atoms are omitted for clarity. The Cl···O=S interactions are shown as dashed lines. [Symmetry codes: (i) x + 1/2, -y + 1/2, z - 1/2; (ii) -x, -y, -z + 1; (iii) -x + 1/2, y - 1/2, -z + 1/2]. |
C14H8Cl3NO2S | F(000) = 728.00 |
Mr = 360.64 | Dx = 1.639 Mg m−3 |
Monoclinic, P21/n | Mo Kα radiation, λ = 0.71075 Å |
Hall symbol: -P 2yn | Cell parameters from 4473 reflections |
a = 7.703 (3) Å | θ = 2.1–31.1° |
b = 12.766 (5) Å | µ = 0.77 mm−1 |
c = 14.884 (6) Å | T = 93 K |
β = 93.028 (6)° | Block, colourless |
V = 1461.7 (10) Å3 | 0.10 × 0.10 × 0.10 mm |
Z = 4 |
Rigaku Saturn724+ diffractometer | 2660 reflections with F2 > 2σ(F2) |
Detector resolution: 7.111 pixels mm-1 | Rint = 0.040 |
ω scans | θmax = 27.5° |
Absorption correction: numerical (NUMABS; Rigaku, 1999) | h = −9→9 |
Tmin = 0.964, Tmax = 0.970 | k = −16→16 |
11979 measured reflections | l = −16→19 |
3350 independent reflections |
Refinement on F2 | Secondary atom site location: difference Fourier map |
R[F2 > 2σ(F2)] = 0.040 | Hydrogen site location: inferred from neighbouring sites |
wR(F2) = 0.097 | H-atom parameters constrained |
S = 1.07 | w = 1/[σ2(Fo2) + (0.0468P)2 + 0.463P] where P = (Fo2 + 2Fc2)/3 |
3350 reflections | (Δ/σ)max < 0.001 |
217 parameters | Δρmax = 0.38 e Å−3 |
0 restraints | Δρmin = −0.34 e Å−3 |
Primary atom site location: structure-invariant direct methods |
C14H8Cl3NO2S | V = 1461.7 (10) Å3 |
Mr = 360.64 | Z = 4 |
Monoclinic, P21/n | Mo Kα radiation |
a = 7.703 (3) Å | µ = 0.77 mm−1 |
b = 12.766 (5) Å | T = 93 K |
c = 14.884 (6) Å | 0.10 × 0.10 × 0.10 mm |
β = 93.028 (6)° |
Rigaku Saturn724+ diffractometer | 3350 independent reflections |
Absorption correction: numerical (NUMABS; Rigaku, 1999) | 2660 reflections with F2 > 2σ(F2) |
Tmin = 0.964, Tmax = 0.970 | Rint = 0.040 |
11979 measured reflections |
R[F2 > 2σ(F2)] = 0.040 | 0 restraints |
wR(F2) = 0.097 | H-atom parameters constrained |
S = 1.07 | Δρmax = 0.38 e Å−3 |
3350 reflections | Δρmin = −0.34 e Å−3 |
217 parameters |
Refinement. Refinement was performed using all reflections. The weighted R-factor (wR) and goodness of fit (S) are based on F2. R-factor (gt) are based on F. The threshold expression of F2 > 2.0 σ(F2) is used only for calculating R-factor (gt). |
x | y | z | Uiso*/Ueq | Occ. (<1) | |
Cl1 | 0.35886 (7) | 0.18970 (5) | 0.16632 (4) | 0.02359 (15) | |
Cl2 | 0.04748 (7) | −0.04673 (5) | 0.28388 (4) | 0.02550 (15) | |
Cl3A | 0.1475 (6) | −0.0132 (4) | 0.1010 (4) | 0.0266 (6) | 0.6500 |
Cl3B | 0.1789 (11) | 0.0075 (6) | 0.0902 (6) | 0.0245 (10) | 0.3500 |
S1 | 0.22085 (7) | 0.24593 (4) | 0.51836 (3) | 0.01767 (14) | |
O1 | 0.1318 (2) | 0.16939 (13) | 0.57137 (11) | 0.0228 (4) | |
O2 | 0.2795 (2) | 0.33968 (13) | 0.56464 (11) | 0.0249 (4) | |
N1 | 0.2211 (3) | 0.14499 (17) | 0.33098 (13) | 0.0280 (5) | |
C1 | 0.3743 (3) | 0.13499 (18) | 0.38622 (15) | 0.0215 (5) | |
C2 | 0.5134 (3) | 0.0742 (2) | 0.35768 (16) | 0.0280 (6) | |
C3 | 0.6655 (3) | 0.0672 (2) | 0.40926 (17) | 0.0284 (6) | |
C4 | 0.6877 (3) | 0.1205 (3) | 0.49020 (17) | 0.0292 (6) | |
C5 | 0.5510 (3) | 0.1783 (2) | 0.52011 (17) | 0.0278 (6) | |
C6 | 0.3943 (3) | 0.18481 (18) | 0.46904 (14) | 0.0188 (5) | |
C7 | 0.0856 (3) | 0.27768 (18) | 0.42469 (14) | 0.0177 (5) | |
C8 | −0.0368 (3) | 0.35745 (19) | 0.43520 (15) | 0.0226 (5) | |
C9 | −0.1597 (4) | 0.3786 (2) | 0.36668 (16) | 0.0277 (6) | |
C10 | −0.1595 (4) | 0.3195 (3) | 0.28853 (16) | 0.0303 (6) | |
C11 | −0.0370 (3) | 0.2424 (3) | 0.27715 (16) | 0.0296 (6) | |
C12 | 0.0911 (3) | 0.22094 (19) | 0.34472 (15) | 0.0220 (5) | |
C13A | 0.2397 (5) | 0.1139 (3) | 0.2389 (3) | 0.0173 (7) | 0.6500 |
C13B | 0.1713 (9) | 0.0641 (6) | 0.2626 (5) | 0.0179 (13) | 0.3500 |
C14A | 0.1559 (5) | 0.0287 (3) | 0.2101 (3) | 0.0195 (7) | 0.6500 |
C14B | 0.2264 (9) | 0.0852 (6) | 0.1815 (6) | 0.0189 (13) | 0.3500 |
H1 | 0.5017 | 0.0377 | 0.3021 | 0.0336* | |
H2 | 0.7574 | 0.0250 | 0.3892 | 0.0341* | |
H3 | 0.7952 | 0.1173 | 0.5244 | 0.0351* | |
H4 | 0.5636 | 0.2141 | 0.5760 | 0.0334* | |
H5 | −0.0352 | 0.3969 | 0.4894 | 0.0272* | |
H6 | −0.2428 | 0.4327 | 0.3730 | 0.0332* | |
H7 | −0.2457 | 0.3323 | 0.2418 | 0.0363* | |
H8 | −0.0397 | 0.2034 | 0.2227 | 0.0355* |
U11 | U22 | U33 | U12 | U13 | U23 | |
Cl1 | 0.0269 (3) | 0.0239 (3) | 0.0204 (3) | −0.0051 (3) | 0.0049 (3) | 0.0012 (3) |
Cl2 | 0.0266 (3) | 0.0235 (3) | 0.0266 (3) | −0.0077 (3) | 0.0025 (3) | 0.0016 (3) |
Cl3A | 0.0265 (14) | 0.0306 (15) | 0.0225 (12) | 0.0019 (9) | −0.0008 (9) | −0.0111 (10) |
Cl3B | 0.027 (3) | 0.030 (3) | 0.0172 (18) | −0.0011 (15) | 0.0001 (15) | −0.0085 (16) |
S1 | 0.0181 (3) | 0.0219 (3) | 0.0130 (3) | 0.0017 (2) | −0.0001 (2) | −0.0001 (2) |
O1 | 0.0223 (8) | 0.0271 (9) | 0.0195 (8) | 0.0016 (7) | 0.0046 (7) | 0.0054 (7) |
O2 | 0.0280 (9) | 0.0260 (9) | 0.0203 (9) | 0.0004 (7) | −0.0038 (7) | −0.0062 (7) |
N1 | 0.0294 (11) | 0.0345 (12) | 0.0189 (10) | 0.0166 (10) | −0.0087 (9) | −0.0110 (9) |
C1 | 0.0207 (12) | 0.0249 (12) | 0.0186 (11) | 0.0061 (10) | −0.0016 (9) | 0.0001 (10) |
C2 | 0.0289 (13) | 0.0355 (15) | 0.0196 (12) | 0.0152 (12) | 0.0007 (10) | −0.0018 (11) |
C3 | 0.0245 (13) | 0.0330 (14) | 0.0280 (13) | 0.0108 (11) | 0.0045 (11) | 0.0066 (11) |
C4 | 0.0171 (12) | 0.0405 (16) | 0.0297 (14) | 0.0038 (11) | −0.0028 (10) | 0.0041 (12) |
C5 | 0.0207 (12) | 0.0398 (16) | 0.0226 (12) | −0.0012 (11) | −0.0019 (10) | −0.0028 (11) |
C6 | 0.0177 (11) | 0.0219 (12) | 0.0166 (11) | 0.0006 (9) | 0.0009 (9) | 0.0020 (9) |
C7 | 0.0175 (11) | 0.0223 (12) | 0.0132 (10) | 0.0006 (9) | 0.0012 (9) | 0.0014 (9) |
C8 | 0.0257 (12) | 0.0244 (12) | 0.0181 (11) | 0.0054 (10) | 0.0043 (10) | −0.0009 (9) |
C9 | 0.0273 (13) | 0.0331 (14) | 0.0227 (12) | 0.0148 (11) | 0.0006 (10) | 0.0004 (11) |
C10 | 0.0280 (13) | 0.0413 (16) | 0.0210 (12) | 0.0129 (12) | −0.0047 (11) | −0.0012 (11) |
C11 | 0.0278 (13) | 0.0416 (16) | 0.0187 (12) | 0.0138 (12) | −0.0049 (10) | −0.0056 (11) |
C12 | 0.0237 (12) | 0.0251 (12) | 0.0168 (11) | 0.0077 (10) | −0.0020 (9) | −0.0016 (9) |
C13A | 0.0180 (18) | 0.0191 (19) | 0.0148 (19) | 0.0027 (16) | 0.0002 (15) | 0.0002 (17) |
C13B | 0.016 (4) | 0.012 (3) | 0.026 (4) | 0.000 (3) | 0.002 (3) | 0.002 (4) |
C14A | 0.0204 (19) | 0.021 (2) | 0.0177 (19) | 0.0048 (16) | 0.0016 (15) | −0.0027 (17) |
C14B | 0.016 (4) | 0.013 (3) | 0.027 (4) | 0.001 (3) | −0.002 (3) | −0.001 (3) |
Cl1—C13A | 1.747 (4) | C4—C5 | 1.379 (4) |
Cl1—C14B | 1.703 (7) | C5—C6 | 1.394 (3) |
Cl2—C13B | 1.745 (8) | C7—C8 | 1.402 (4) |
Cl2—C14A | 1.711 (4) | C7—C12 | 1.396 (4) |
Cl3A—C14A | 1.707 (7) | C8—C9 | 1.381 (4) |
Cl3B—C14B | 1.707 (11) | C9—C10 | 1.387 (4) |
S1—O1 | 1.4509 (18) | C10—C11 | 1.380 (4) |
S1—O2 | 1.4415 (18) | C11—C12 | 1.399 (4) |
S1—C6 | 1.743 (3) | C13A—C14A | 1.324 (6) |
S1—C7 | 1.743 (3) | C13B—C14B | 1.328 (11) |
N1—C1 | 1.408 (3) | C2—H1 | 0.950 |
N1—C12 | 1.416 (4) | C3—H2 | 0.950 |
N1—C13A | 1.441 (5) | C4—H3 | 0.950 |
N1—C13B | 1.485 (8) | C5—H4 | 0.950 |
C1—C2 | 1.407 (4) | C8—H5 | 0.950 |
C1—C6 | 1.388 (4) | C9—H6 | 0.950 |
C2—C3 | 1.369 (4) | C10—H7 | 0.950 |
C3—C4 | 1.387 (4) | C11—H8 | 0.950 |
O1—S1—O2 | 116.39 (10) | C7—C12—C11 | 117.3 (3) |
O1—S1—C6 | 108.83 (11) | Cl1—C13A—N1 | 121.1 (3) |
O1—S1—C7 | 108.16 (11) | Cl1—C13A—C14A | 121.2 (4) |
O2—S1—C6 | 110.19 (11) | N1—C13A—C14A | 117.6 (4) |
O2—S1—C7 | 110.36 (11) | Cl2—C13B—N1 | 124.3 (5) |
C6—S1—C7 | 101.91 (11) | Cl2—C13B—C14B | 122.2 (6) |
C1—N1—C12 | 123.7 (2) | N1—C13B—C14B | 113.5 (6) |
C1—N1—C13A | 114.1 (3) | Cl2—C14A—Cl3A | 116.0 (3) |
C1—N1—C13B | 121.0 (4) | Cl2—C14A—C13A | 120.1 (4) |
C12—N1—C13A | 115.6 (3) | Cl3A—C14A—C13A | 123.9 (4) |
C12—N1—C13B | 114.6 (3) | Cl1—C14B—Cl3B | 117.0 (6) |
N1—C1—C2 | 120.1 (2) | Cl1—C14B—C13B | 120.1 (6) |
N1—C1—C6 | 121.8 (2) | Cl3B—C14B—C13B | 122.8 (7) |
C2—C1—C6 | 118.0 (2) | C1—C2—H1 | 119.668 |
C1—C2—C3 | 120.7 (3) | C3—C2—H1 | 119.665 |
C2—C3—C4 | 121.1 (3) | C2—C3—H2 | 119.434 |
C3—C4—C5 | 118.8 (3) | C4—C3—H2 | 119.419 |
C4—C5—C6 | 120.6 (3) | C3—C4—H3 | 120.585 |
S1—C6—C1 | 121.81 (17) | C5—C4—H3 | 120.590 |
S1—C6—C5 | 117.24 (18) | C4—C5—H4 | 119.689 |
C1—C6—C5 | 120.6 (2) | C6—C5—H4 | 119.683 |
S1—C7—C8 | 117.16 (17) | C7—C8—H5 | 120.053 |
S1—C7—C12 | 121.16 (18) | C9—C8—H5 | 120.047 |
C8—C7—C12 | 121.5 (2) | C8—C9—H6 | 120.592 |
C7—C8—C9 | 119.9 (3) | C10—C9—H6 | 120.585 |
C8—C9—C10 | 118.8 (3) | C9—C10—H7 | 119.271 |
C9—C10—C11 | 121.5 (3) | C11—C10—H7 | 119.270 |
C10—C11—C12 | 120.8 (3) | C10—C11—H8 | 119.575 |
N1—C12—C7 | 122.1 (2) | C12—C11—H8 | 119.581 |
N1—C12—C11 | 120.5 (2) | ||
O1—S1—C6—C1 | 87.90 (18) | C13B—N1—C12—C11 | −24.3 (5) |
O1—S1—C6—C5 | −85.66 (17) | N1—C1—C2—C3 | 177.5 (2) |
O1—S1—C7—C8 | 86.33 (17) | N1—C1—C6—S1 | 10.3 (4) |
O1—S1—C7—C12 | −89.26 (17) | N1—C1—C6—C5 | −176.39 (19) |
O2—S1—C6—C1 | −143.36 (16) | C2—C1—C6—S1 | −170.48 (19) |
O2—S1—C6—C5 | 43.07 (18) | C2—C1—C6—C5 | 2.9 (4) |
O2—S1—C7—C8 | −42.04 (18) | C6—C1—C2—C3 | −1.8 (4) |
O2—S1—C7—C12 | 142.37 (15) | C1—C2—C3—C4 | −0.9 (4) |
C6—S1—C7—C8 | −159.07 (15) | C2—C3—C4—C5 | 2.4 (4) |
C6—S1—C7—C12 | 25.34 (19) | C3—C4—C5—C6 | −1.3 (4) |
C7—S1—C6—C1 | −26.21 (19) | C4—C5—C6—S1 | 172.3 (2) |
C7—S1—C6—C5 | 160.23 (15) | C4—C5—C6—C1 | −1.4 (4) |
C1—N1—C12—C7 | −14.0 (4) | S1—C7—C8—C9 | −173.12 (15) |
C1—N1—C12—C11 | 165.5 (2) | S1—C7—C12—N1 | −8.8 (3) |
C12—N1—C1—C2 | −166.01 (19) | S1—C7—C12—C11 | 171.66 (14) |
C12—N1—C1—C6 | 13.2 (4) | C8—C7—C12—N1 | 175.7 (2) |
C1—N1—C13A—Cl1 | −71.3 (4) | C8—C7—C12—C11 | −3.7 (4) |
C1—N1—C13A—C14A | 112.1 (3) | C12—C7—C8—C9 | 2.5 (4) |
C13A—N1—C1—C2 | −15.9 (4) | C7—C8—C9—C10 | 0.3 (4) |
C13A—N1—C1—C6 | 163.4 (3) | C8—C9—C10—C11 | −1.7 (4) |
C1—N1—C13B—Cl2 | 88.4 (6) | C9—C10—C11—C12 | 0.4 (4) |
C1—N1—C13B—C14B | −93.3 (5) | C10—C11—C12—N1 | −177.2 (3) |
C13B—N1—C1—C2 | 24.4 (5) | C10—C11—C12—C7 | 2.3 (4) |
C13B—N1—C1—C6 | −156.4 (4) | Cl1—C13A—C14A—Cl2 | 177.4 (2) |
C12—N1—C13A—Cl1 | 81.4 (3) | Cl1—C13A—C14A—Cl3A | −2.6 (5) |
C12—N1—C13A—C14A | −95.2 (4) | N1—C13A—C14A—Cl2 | −6.0 (5) |
C13A—N1—C12—C7 | −163.7 (3) | N1—C13A—C14A—Cl3A | 174.0 (3) |
C13A—N1—C12—C11 | 15.8 (4) | Cl2—C13B—C14B—Cl1 | −175.6 (4) |
C12—N1—C13B—Cl2 | −82.2 (6) | Cl2—C13B—C14B—Cl3B | 1.1 (9) |
C12—N1—C13B—C14B | 96.1 (5) | N1—C13B—C14B—Cl1 | 6.0 (8) |
C13B—N1—C12—C7 | 156.3 (4) | N1—C13B—C14B—Cl3B | −177.2 (4) |
Experimental details
Crystal data | |
Chemical formula | C14H8Cl3NO2S |
Mr | 360.64 |
Crystal system, space group | Monoclinic, P21/n |
Temperature (K) | 93 |
a, b, c (Å) | 7.703 (3), 12.766 (5), 14.884 (6) |
β (°) | 93.028 (6) |
V (Å3) | 1461.7 (10) |
Z | 4 |
Radiation type | Mo Kα |
µ (mm−1) | 0.77 |
Crystal size (mm) | 0.10 × 0.10 × 0.10 |
Data collection | |
Diffractometer | Rigaku Saturn724+ |
Absorption correction | Numerical (NUMABS; Rigaku, 1999) |
Tmin, Tmax | 0.964, 0.970 |
No. of measured, independent and observed [F2 > 2σ(F2)] reflections | 11979, 3350, 2660 |
Rint | 0.040 |
(sin θ/λ)max (Å−1) | 0.650 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.040, 0.097, 1.07 |
No. of reflections | 3350 |
No. of parameters | 217 |
H-atom treatment | H-atom parameters constrained |
Δρmax, Δρmin (e Å−3) | 0.38, −0.34 |
Computer programs: CrystalClear (Rigaku, 2008), SHELXS97 (Sheldrick, 2008), SHELXL97 (Sheldrick, 2008), ORTEP-3 (Farrugia, 1997), CrystalStructure (Rigaku, 2010).
Atoms | Cl···O | C-Cl···O | Cl···O=S |
C13A-Cl1···O1i=S1 | 3.1571 (19) | 167.60 (14) | 101.82 (9) |
C14B-Cl1···O1i=S1 | 3.1571 (19) | 157.5 (3) | 101.82 (9) |
C14A-Cl2···O1ii=S1 | 3.0521 (19) | 175.00 (15) | 166.90 (10) |
C13B-Cl2···O1ii=S1 | 3.0521 (19) | 144.7 (3) | 166.90 (10) |
C14A-Cl3A···O2iii=S1 | 3.174 (5) | 157.7 (3) | 100.61 (13) |
C14B-Cl3B···O2iii=S1 | 3.175 (9) | 160.8 (5) | 104.74 (18) |
Symmetry codes: (i) x + 1/2, -y + 1/2, z - 1/2; (ii) -x, -y, -z + 1; (iii) -x + 1/2, y - 1/2, -z + 1/2. |
Acknowledgements
This work was supported by Research for Promoting Technological Seeds from the Japan Science and Technology Agency (JST).
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.
Halogen bondings between halogen atoms and Lewis bases have been paid attention from the viewpoint of protein chemistry because of their use for the design of supramolecular assemblies (Auffinger et al. 2004; Politzer et al., 2007). However, Cl···O=S interactions in heterocycles such as thiophenes and phenothiazines have been reported only in two cases (Douglas et al., 1993; Jovanovic et al., 1986). This is the first report of Cl···O=S interactions in phenothiazine 5,5-dioxide compounds.
The trichlorovinyl group is disordered to give two orientations, which are represented by the form A (C13A/C14A/Cl3A) and the form B (C13B/C14B/Cl3B) (Figure 1). The occupancies of A and B are determined to 0.65 for A and 0.35 for B as both disordered forms have similar thermal parameters. Both trichlorovinyl groups have a planar structure (the N1/C13A/C14A/Cl1/Cl2/Cl3A plane: r.m.s. deviation = 0.0465 Å and the N1/C13B/C14B/Cl1/Cl2/Cl3B plane: r.m.s. deviation = 0.0521 Å). The structures around N1 are pyramidal in A and planar in B, where the distances of N1 to the C1/C12/C13A plane and the C1/C12/C13B plane are 0.212 (2) Å and 0.071 (2) Å, respectively.
The phenothiazine moiety has a butterfly structure, where the dihedral angle between two benzene rings (the C1—C6 plane: r.m.s. deviation = 0.0103 Å and the C7—C12 plane: r.m.s. deviation = 0.0114 Å) is 162.51 (9)°. The central six-membered ring (the N1/C1/C6/S1/C7/C12 ring) has a boat form. The length of the equatorial S1—O2 bond is in the range of the reported values (1.4293 (14) Å - 1.4421 (11) Å) of phenothiazine 5,5-dioxide compounds (Harrison et al., 2007; Kamtekar et al., 2011; Siddegowda et al., 2011a,b; Zhu et al., 2007), while the axial S1—O1 bond shows a longer bond length compared with that of the reported values (1.4294 (13) Å - 1.4495 (17) Å). This elongation may be caused by the intermolecular Cl···O=S interactions.
The molecules form a dimeric structure by the intermolecular Cl2ii···O1 interactions [Symmetry code: (ii) -x, -y, -z + 1]. The dimers make a two-dimensional array on the (101) plane by other Cl···O=S interactions (Figure 2). The intermolecular Cl···O=S distances are in the range of reported values (2.741 (3) Å - 3.267 (2) Å (Bandera et al., 2007; Choi et al., 2008)). Remarkable contacts cannot be observed between the arrays. The two-dimensional network is found to be kept unchanged, although the trichlorovinyl group is disordered.