organic compounds
N-(4-Chlorobenzoyl)-N′-(3-fluorophenyl)thiourea
aSchool of Chemical Sciences and Food Technology, Universiti Kebangsaan Malaysia, UKM 43500 Bangi Selangor, Malaysia, and bDepartment of Chemistry, Faculty of Science, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia
*Correspondence e-mail: bohari@ukm.my
In the title compound, C14H10ClFN2OS, the molecule adopts a trans–cis geometry of the thiourea unit. The dihedral angles between the benzene rings is 34.47 (7)°. The crystal packing features intermolecular N—H⋯S and C—H⋯O hydrogen bonds, forming a chain along the b axis. A short C—H⋯S intramolecular contact is also observed.
Related literature
For the biological and anti corrosion properties of thiourea derivatives, see: Shen et al. (2006); Sun et al.(2006). For the structures of related 4-chlorobenzoyl thiourea derivatives, see: Khawar Rauf et al. (2009); Yusof et al. (2009). For bond-length data, see: Allen et al. (1987).
Experimental
Crystal data
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Refinement
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Data collection: CrysAlis PRO (Oxford Diffraction, 2010); cell CrysAlis PRO; data reduction: CrysAlis PRO; program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: SHELXTL (Sheldrick, 2008); software used to prepare material for publication: SHELXTL, PARST (Nardelli, 1995) and PLATON (Spek, 2009).
Supporting information
https://doi.org/10.1107/S1600536810030965/dn2588sup1.cif
contains datablocks global, I. DOI:Structure factors: contains datablock I. DOI: https://doi.org/10.1107/S1600536810030965/dn2588Isup2.hkl
4-chlorobenzoyl chloride (1.74 g, 0.01 mol) was mixed with an equimolar amount of ammonium thiocyanate (0.76 g,0.01 mol) and 3-fluoroaniline (1.11 g, 0.01 mol) in 50 ml dried acetone. The mixture was refluxed for 2 h. The light yellow solution was filtered and left to evaporate at room temperature. Colourless crystals were obtained after a few days (Yield 89.2%; m.p 458.2–459.7 K).
H atoms on the parent carbon atoms were positioned geometrically with C—H= 0.93 Å and N—H = 0.86Å and constrained to ride on their parent atoms with Uiso(H)= 1.2Ueq(parent atom).
The rapid progress in the synthesis of thiourea derivative is driven by their potential as biological active compounds (Sun et al., 2006) and in the material applications such as anti corrosion(Shen et al., 2006). The molecular structural study of the compound is important for structure-activity relationship which is useful for rasional design strategy. The tittle compound (I) is analogus to 1-(4-chlorobenzoyl)-3-(2,4,6-trichlorophenyl)thiourea hemihydrate (II)(Khawar Rauf et al., 2009) and 1-(1,3-benzothiazol-2-yl)-3- (4-chlorobenzoyl)thiourea (III) (Yusof et al. 2009) except the substituent attached to the terminal nitrogen atom is 3-fluorophenyl instead of 2,4,6-trichlorohenyl or benzothiazole. There are two molecules in the
of (II). The dihedral angle between the two benzene rings in each molecule is 66.93 (8)° and 60.44 (9)°. On the other hand, the dihedral angles between the benzene ring and the benzothiaozole in (III) of 28.42 (8)° indicating the role of chlorine atom on the stablity of the compound.The molecule (I) is discrete (Figure 1) and adopts a typical trans-cis configuration with respect to the position of 4-chlorobenzoyl and 3-fluorophenyl fragments respectively against the thiono group across their C—N bonds. The benzene rings and thiourea moiety are each planar with maximum deviation of 0.025 (1)Å for N2 atom from least square plane. The dihedral angles between the two benzene rings of 34.47 (7)° is smaller than that in (II) but close to (III). The central thiourea moiety (N1/C8/N2/S1) makes dihedral angles with the benzene (C1—C6) and (C9—C14)rings of 15.44 (6)° and 21.68 (6)° respectively. The bond lengths and angles are in normal ranges (Allen et al., 1987). There are two intramolecular hydrogen bonds, N2—H2A..O1 and C14—H14A..S1, forming two pseudo-six member rings [O1..H2A/N2/C8/N1/C7] and [S1..H14A/C14/C9/N2/C8]. In the
molecules are linked by intermolecular hydrogen bonds, N1—H1A..S1 and C2—H2B..O1 (symmetry code as in table 2) forming one dimensional chain along b axis (Figure 2).For the biological and anti corrosion properties of thiourea derivatives, see: Shen et al. (2006); Sun et al.(2006). For the structures of related 4-chlorobenzoyl thiourea derivatives, see: Khawar Rauf et al. (2009); Yusof et al. (2009). For bond-length data, see: Allen et al. (1987).
Data collection: CrysAlis PRO (Oxford Diffraction, 2010); cell
CrysAlis PRO (Oxford Diffraction, 2010); data reduction: CrysAlis PRO (Oxford Diffraction, 2010); program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: SHELXTL (Sheldrick, 2008); software used to prepare material for publication: SHELXTL (Sheldrick, 2008), PARST (Nardelli, 1995) and PLATON (Spek, 2009).C14H10ClFN2OS | F(000) = 632 |
Mr = 308.75 | Dx = 1.518 Mg m−3 |
Monoclinic, P21/c | Melting point: 459 K |
Hall symbol: -P 2ybc | Cu Kα radiation, λ = 1.54178 Å |
a = 8.5778 (1) Å | Cell parameters from 24507 reflections |
b = 11.7584 (2) Å | θ = 5.0–72.7° |
c = 13.4069 (2) Å | µ = 4.03 mm−1 |
β = 92.448 (2)° | T = 293 K |
V = 1351.00 (3) Å3 | Block, colourless |
Z = 4 | 0.50 × 0.29 × 0.25 mm |
Oxford Diffraction Xcalibur Eos Gemini diffractometer | 2685 independent reflections |
Radiation source: Enhance (Cu) X-ray Source | 2628 reflections with I > 2σ(I) |
Graphite monochromator | Rint = 0.027 |
Detector resolution: 16.1952 pixels mm-1 | θmax = 72.7°, θmin = 5.0° |
ω scans | h = −9→10 |
Absorption correction: multi-scan (CrysAlis PRO; Oxford Diffraction, 2010) | k = −14→14 |
Tmin = 0.238, Tmax = 0.432 | l = −16→16 |
33403 measured reflections |
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)] = 0.032 | Hydrogen site location: inferred from neighbouring sites |
wR(F2) = 0.090 | H-atom parameters constrained |
S = 1.06 | w = 1/[σ2(Fo2) + (0.0565P)2 + 0.5662P] where P = (Fo2 + 2Fc2)/3 |
2685 reflections | (Δ/σ)max < 0.001 |
181 parameters | Δρmax = 0.31 e Å−3 |
0 restraints | Δρmin = −0.27 e Å−3 |
C14H10ClFN2OS | V = 1351.00 (3) Å3 |
Mr = 308.75 | Z = 4 |
Monoclinic, P21/c | Cu Kα radiation |
a = 8.5778 (1) Å | µ = 4.03 mm−1 |
b = 11.7584 (2) Å | T = 293 K |
c = 13.4069 (2) Å | 0.50 × 0.29 × 0.25 mm |
β = 92.448 (2)° |
Oxford Diffraction Xcalibur Eos Gemini diffractometer | 2685 independent reflections |
Absorption correction: multi-scan (CrysAlis PRO; Oxford Diffraction, 2010) | 2628 reflections with I > 2σ(I) |
Tmin = 0.238, Tmax = 0.432 | Rint = 0.027 |
33403 measured reflections |
R[F2 > 2σ(F2)] = 0.032 | 0 restraints |
wR(F2) = 0.090 | H-atom parameters constrained |
S = 1.06 | Δρmax = 0.31 e Å−3 |
2685 reflections | Δρmin = −0.27 e Å−3 |
181 parameters |
Experimental. Empirical absorption correction using spherical harmonics, implemented in SCALE3 ABSPACK scaling algorithm, CrysAlisPro (Oxford Diffraction, 2010) |
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 | ||
Cl1 | 0.68504 (4) | 0.20726 (4) | 0.98436 (3) | 0.03536 (13) | |
S1 | 1.21472 (5) | 0.03202 (3) | 0.43885 (3) | 0.03022 (13) | |
F1 | 1.42690 (13) | 0.17249 (11) | 0.12225 (8) | 0.0484 (3) | |
O1 | 1.06117 (13) | 0.36258 (8) | 0.58155 (8) | 0.0294 (2) | |
N1 | 1.06930 (14) | 0.17096 (10) | 0.55597 (9) | 0.0236 (3) | |
H1A | 1.0313 | 0.1078 | 0.5764 | 0.028* | |
N2 | 1.20911 (14) | 0.26185 (10) | 0.43716 (9) | 0.0244 (3) | |
H2A | 1.1773 | 0.3206 | 0.4686 | 0.029* | |
C1 | 0.94098 (17) | 0.14201 (12) | 0.75021 (11) | 0.0247 (3) | |
H1B | 0.9950 | 0.0807 | 0.7247 | 0.030* | |
C2 | 0.86286 (18) | 0.12932 (13) | 0.83788 (11) | 0.0278 (3) | |
H2B | 0.8634 | 0.0600 | 0.8712 | 0.033* | |
C3 | 0.78396 (17) | 0.22191 (13) | 0.87489 (10) | 0.0255 (3) | |
C4 | 0.78102 (18) | 0.32590 (13) | 0.82683 (11) | 0.0284 (3) | |
H4A | 0.7276 | 0.3871 | 0.8530 | 0.034* | |
C5 | 0.85897 (18) | 0.33731 (12) | 0.73923 (11) | 0.0265 (3) | |
H5A | 0.8578 | 0.4069 | 0.7062 | 0.032* | |
C6 | 0.93944 (16) | 0.24564 (11) | 0.69979 (10) | 0.0216 (3) | |
C7 | 1.02701 (16) | 0.26641 (12) | 0.60795 (10) | 0.0226 (3) | |
C8 | 1.16519 (16) | 0.16253 (12) | 0.47485 (10) | 0.0220 (3) | |
C9 | 1.29923 (16) | 0.28669 (12) | 0.35414 (11) | 0.0245 (3) | |
C10 | 1.35933 (19) | 0.39669 (14) | 0.34964 (13) | 0.0330 (3) | |
H10A | 1.3439 | 0.4479 | 0.4012 | 0.040* | |
C11 | 1.4424 (2) | 0.42933 (16) | 0.26764 (15) | 0.0414 (4) | |
H11A | 1.4825 | 0.5027 | 0.2651 | 0.050* | |
C12 | 1.46672 (19) | 0.35550 (16) | 0.19007 (14) | 0.0398 (4) | |
H12A | 1.5221 | 0.3776 | 0.1352 | 0.048* | |
C13 | 1.40591 (18) | 0.24824 (16) | 0.19719 (12) | 0.0333 (4) | |
C14 | 1.32205 (17) | 0.21067 (13) | 0.27676 (11) | 0.0274 (3) | |
H14A | 1.2824 | 0.1371 | 0.2784 | 0.033* |
U11 | U22 | U33 | U12 | U13 | U23 | |
Cl1 | 0.0334 (2) | 0.0521 (3) | 0.02125 (19) | −0.00362 (16) | 0.00978 (15) | −0.00270 (15) |
S1 | 0.0401 (2) | 0.01980 (19) | 0.0323 (2) | −0.00030 (13) | 0.01862 (16) | −0.00299 (13) |
F1 | 0.0517 (6) | 0.0658 (7) | 0.0294 (5) | 0.0014 (5) | 0.0214 (4) | 0.0013 (5) |
O1 | 0.0390 (6) | 0.0187 (5) | 0.0315 (6) | −0.0022 (4) | 0.0119 (5) | −0.0016 (4) |
N1 | 0.0312 (6) | 0.0176 (5) | 0.0228 (6) | −0.0027 (5) | 0.0098 (5) | −0.0013 (4) |
N2 | 0.0294 (6) | 0.0201 (6) | 0.0243 (6) | −0.0004 (5) | 0.0085 (5) | −0.0008 (4) |
C1 | 0.0313 (7) | 0.0213 (6) | 0.0219 (7) | 0.0031 (5) | 0.0034 (5) | −0.0026 (5) |
C2 | 0.0347 (8) | 0.0268 (7) | 0.0220 (7) | −0.0002 (6) | 0.0024 (6) | 0.0018 (5) |
C3 | 0.0235 (7) | 0.0366 (8) | 0.0165 (6) | −0.0032 (6) | 0.0030 (5) | −0.0035 (5) |
C4 | 0.0304 (7) | 0.0287 (7) | 0.0263 (7) | 0.0042 (6) | 0.0051 (6) | −0.0075 (6) |
C5 | 0.0328 (8) | 0.0213 (7) | 0.0256 (7) | 0.0015 (6) | 0.0039 (6) | −0.0029 (5) |
C6 | 0.0237 (6) | 0.0216 (6) | 0.0194 (6) | −0.0008 (5) | 0.0024 (5) | −0.0028 (5) |
C7 | 0.0250 (7) | 0.0205 (7) | 0.0223 (7) | 0.0001 (5) | 0.0028 (5) | −0.0025 (5) |
C8 | 0.0242 (6) | 0.0217 (6) | 0.0202 (6) | −0.0013 (5) | 0.0037 (5) | −0.0009 (5) |
C9 | 0.0206 (6) | 0.0269 (7) | 0.0262 (7) | 0.0007 (5) | 0.0031 (5) | 0.0077 (5) |
C10 | 0.0328 (8) | 0.0265 (7) | 0.0400 (9) | −0.0007 (6) | 0.0041 (6) | 0.0072 (6) |
C11 | 0.0337 (8) | 0.0351 (9) | 0.0558 (11) | −0.0053 (7) | 0.0077 (8) | 0.0205 (8) |
C12 | 0.0295 (8) | 0.0516 (10) | 0.0393 (9) | 0.0025 (7) | 0.0121 (7) | 0.0224 (8) |
C13 | 0.0264 (7) | 0.0474 (9) | 0.0267 (8) | 0.0051 (7) | 0.0072 (6) | 0.0090 (7) |
C14 | 0.0243 (7) | 0.0327 (8) | 0.0258 (7) | −0.0003 (6) | 0.0062 (6) | 0.0048 (6) |
Cl1—C3 | 1.7350 (14) | C4—C5 | 1.383 (2) |
S1—C8 | 1.6691 (14) | C4—H4A | 0.9300 |
F1—C13 | 1.360 (2) | C5—C6 | 1.396 (2) |
O1—C7 | 1.2243 (18) | C5—H5A | 0.9300 |
N1—C7 | 1.3778 (18) | C6—C7 | 1.4896 (19) |
N1—C8 | 1.3949 (17) | C9—C14 | 1.390 (2) |
N1—H1A | 0.8600 | C9—C10 | 1.395 (2) |
N2—C8 | 1.3332 (18) | C10—C11 | 1.390 (2) |
N2—C9 | 1.4125 (18) | C10—H10A | 0.9300 |
N2—H2A | 0.8600 | C11—C12 | 1.377 (3) |
C1—C2 | 1.386 (2) | C11—H11A | 0.9300 |
C1—C6 | 1.393 (2) | C12—C13 | 1.370 (3) |
C1—H1B | 0.9300 | C12—H12A | 0.9300 |
C2—C3 | 1.385 (2) | C13—C14 | 1.384 (2) |
C2—H2B | 0.9300 | C14—H14A | 0.9300 |
C3—C4 | 1.382 (2) | ||
C7—N1—C8 | 128.98 (12) | O1—C7—N1 | 122.32 (13) |
C7—N1—H1A | 115.5 | O1—C7—C6 | 121.72 (12) |
C8—N1—H1A | 115.5 | N1—C7—C6 | 115.94 (12) |
C8—N2—C9 | 130.76 (13) | N2—C8—N1 | 114.77 (12) |
C8—N2—H2A | 114.6 | N2—C8—S1 | 128.04 (11) |
C9—N2—H2A | 114.6 | N1—C8—S1 | 117.17 (10) |
C2—C1—C6 | 120.71 (13) | C14—C9—C10 | 120.01 (14) |
C2—C1—H1B | 119.6 | C14—C9—N2 | 123.68 (13) |
C6—C1—H1B | 119.6 | C10—C9—N2 | 116.20 (14) |
C3—C2—C1 | 118.74 (14) | C11—C10—C9 | 119.56 (16) |
C3—C2—H2B | 120.6 | C11—C10—H10A | 120.2 |
C1—C2—H2B | 120.6 | C9—C10—H10A | 120.2 |
C2—C3—C4 | 121.87 (13) | C12—C11—C10 | 121.50 (16) |
C2—C3—Cl1 | 119.29 (12) | C12—C11—H11A | 119.2 |
C4—C3—Cl1 | 118.84 (11) | C10—C11—H11A | 119.2 |
C5—C4—C3 | 118.83 (14) | C13—C12—C11 | 117.22 (15) |
C5—C4—H4A | 120.6 | C13—C12—H12A | 121.4 |
C3—C4—H4A | 120.6 | C11—C12—H12A | 121.4 |
C4—C5—C6 | 120.77 (14) | F1—C13—C12 | 119.25 (15) |
C4—C5—H5A | 119.6 | F1—C13—C14 | 116.73 (16) |
C6—C5—H5A | 119.6 | C12—C13—C14 | 124.02 (17) |
C1—C6—C5 | 119.09 (13) | C13—C14—C9 | 117.68 (15) |
C1—C6—C7 | 123.35 (12) | C13—C14—H14A | 121.2 |
C5—C6—C7 | 117.48 (13) | C9—C14—H14A | 121.2 |
C6—C1—C2—C3 | −0.4 (2) | C9—N2—C8—N1 | −177.20 (13) |
C1—C2—C3—C4 | 0.1 (2) | C9—N2—C8—S1 | 4.6 (2) |
C1—C2—C3—Cl1 | 179.79 (11) | C7—N1—C8—N2 | −7.1 (2) |
C2—C3—C4—C5 | 0.1 (2) | C7—N1—C8—S1 | 171.32 (12) |
Cl1—C3—C4—C5 | −179.56 (11) | C8—N2—C9—C14 | 20.2 (2) |
C3—C4—C5—C6 | 0.0 (2) | C8—N2—C9—C10 | −163.45 (15) |
C2—C1—C6—C5 | 0.5 (2) | C14—C9—C10—C11 | −0.3 (2) |
C2—C1—C6—C7 | 177.04 (13) | N2—C9—C10—C11 | −176.72 (14) |
C4—C5—C6—C1 | −0.3 (2) | C9—C10—C11—C12 | 0.2 (3) |
C4—C5—C6—C7 | −177.01 (13) | C10—C11—C12—C13 | −0.2 (3) |
C8—N1—C7—O1 | 6.6 (2) | C11—C12—C13—F1 | 179.93 (15) |
C8—N1—C7—C6 | −172.23 (13) | C11—C12—C13—C14 | 0.3 (3) |
C1—C6—C7—O1 | −158.63 (14) | F1—C13—C14—C9 | 180.00 (13) |
C5—C6—C7—O1 | 17.9 (2) | C12—C13—C14—C9 | −0.3 (2) |
C1—C6—C7—N1 | 20.2 (2) | C10—C9—C14—C13 | 0.3 (2) |
C5—C6—C7—N1 | −163.19 (13) | N2—C9—C14—C13 | 176.49 (13) |
D—H···A | D—H | H···A | D···A | D—H···A |
C14—H14A···S1 | 0.93 | 2.57 | 3.1865 (15) | 124 |
N2—H2A···O1 | 0.86 | 1.91 | 2.6402 (16) | 141 |
N1—H1A···S1i | 0.86 | 2.68 | 3.4134 (13) | 145 |
C2—H2B···O1ii | 0.93 | 2.48 | 3.3717 (18) | 160 |
Symmetry codes: (i) −x+2, −y, −z+1; (ii) −x+2, y−1/2, −z+3/2. |
Experimental details
Crystal data | |
Chemical formula | C14H10ClFN2OS |
Mr | 308.75 |
Crystal system, space group | Monoclinic, P21/c |
Temperature (K) | 293 |
a, b, c (Å) | 8.5778 (1), 11.7584 (2), 13.4069 (2) |
β (°) | 92.448 (2) |
V (Å3) | 1351.00 (3) |
Z | 4 |
Radiation type | Cu Kα |
µ (mm−1) | 4.03 |
Crystal size (mm) | 0.50 × 0.29 × 0.25 |
Data collection | |
Diffractometer | Oxford Diffraction Xcalibur Eos Gemini |
Absorption correction | Multi-scan (CrysAlis PRO; Oxford Diffraction, 2010) |
Tmin, Tmax | 0.238, 0.432 |
No. of measured, independent and observed [I > 2σ(I)] reflections | 33403, 2685, 2628 |
Rint | 0.027 |
(sin θ/λ)max (Å−1) | 0.619 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.032, 0.090, 1.06 |
No. of reflections | 2685 |
No. of parameters | 181 |
H-atom treatment | H-atom parameters constrained |
Δρmax, Δρmin (e Å−3) | 0.31, −0.27 |
Computer programs: CrysAlis PRO (Oxford Diffraction, 2010), SHELXS97 (Sheldrick, 2008), SHELXL97 (Sheldrick, 2008), SHELXTL (Sheldrick, 2008), PARST (Nardelli, 1995) and PLATON (Spek, 2009).
D—H···A | D—H | H···A | D···A | D—H···A |
C14—H14A···S1 | 0.93 | 2.57 | 3.1865 (15) | 124 |
N2—H2A···O1 | 0.86 | 1.91 | 2.6402 (16) | 141 |
N1—H1A···S1i | 0.86 | 2.68 | 3.4134 (13) | 145 |
C2—H2B···O1ii | 0.93 | 2.48 | 3.3717 (18) | 160 |
Symmetry codes: (i) −x+2, −y, −z+1; (ii) −x+2, y−1/2, −z+3/2. |
Acknowledgements
The authors thank the Ministry of Higher Education of Malaysia and Universiti Kebangsaan Malaysia for research facilities and grants UKM-GUP-NBT-08–27–110 and UKM-OUP-NBT-27–144. An NSF scholarship from The Ministry of Science, Technology and Innovation to NEAO is very much appreciated.
References
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Yusof, M. S. M., Aishah, Z. S., Khairul, W. M. & Yamin, B. M. (2009). Acta Cryst. E65, o2519. Web of Science CSD CrossRef IUCr Journals Google Scholar
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The rapid progress in the synthesis of thiourea derivative is driven by their potential as biological active compounds (Sun et al., 2006) and in the material applications such as anti corrosion(Shen et al., 2006). The molecular structural study of the compound is important for structure-activity relationship which is useful for rasional design strategy. The tittle compound (I) is analogus to 1-(4-chlorobenzoyl)-3-(2,4,6-trichlorophenyl)thiourea hemihydrate (II)(Khawar Rauf et al., 2009) and 1-(1,3-benzothiazol-2-yl)-3- (4-chlorobenzoyl)thiourea (III) (Yusof et al. 2009) except the substituent attached to the terminal nitrogen atom is 3-fluorophenyl instead of 2,4,6-trichlorohenyl or benzothiazole. There are two molecules in the asymmetric unit of (II). The dihedral angle between the two benzene rings in each molecule is 66.93 (8)° and 60.44 (9)°. On the other hand, the dihedral angles between the benzene ring and the benzothiaozole in (III) of 28.42 (8)° indicating the role of chlorine atom on the stablity of the compound.
The molecule (I) is discrete (Figure 1) and adopts a typical trans-cis configuration with respect to the position of 4-chlorobenzoyl and 3-fluorophenyl fragments respectively against the thiono group across their C—N bonds. The benzene rings and thiourea moiety are each planar with maximum deviation of 0.025 (1)Å for N2 atom from least square plane. The dihedral angles between the two benzene rings of 34.47 (7)° is smaller than that in (II) but close to (III). The central thiourea moiety (N1/C8/N2/S1) makes dihedral angles with the benzene (C1—C6) and (C9—C14)rings of 15.44 (6)° and 21.68 (6)° respectively. The bond lengths and angles are in normal ranges (Allen et al., 1987). There are two intramolecular hydrogen bonds, N2—H2A..O1 and C14—H14A..S1, forming two pseudo-six member rings [O1..H2A/N2/C8/N1/C7] and [S1..H14A/C14/C9/N2/C8]. In the crystal structure, molecules are linked by intermolecular hydrogen bonds, N1—H1A..S1 and C2—H2B..O1 (symmetry code as in table 2) forming one dimensional chain along b axis (Figure 2).