organic compounds
Z)-[(2E)-3-(4-chlorophenyl)-1-phenylprop-2-en-1-ylidene]amino}-3-ethylthiourea
of 1-{(aDepartment of Chemistry, Universiti Putra Malaysia, 43400 Serdang, Malaysia, and bCentre for Crystalline Materials, Faculty of Science and Technology, Sunway University, No. 5 Jalan Universiti, 47500 Bandar Sunway, Selangor Darul Ehsan, Malaysia
*Correspondence e-mail: thahira@upm.edu.my, edwardt@sunway.edu.my
In the title thiosemicarbazone compound, C18H18ClN3S, the CN3S residue is almost planar (r.m.s. deviation = 0.0031 Å) and forms dihedral angles of 65.99 (7) and 34.60 (10)° with the phenyl and chlorobenzene rings, respectively; the dihedral angle between the aromatic rings is 85.13 (8)°. The conformation about the C=N bond is Z, and that about the C=C bonds is E. The imine N and ethyl N atoms are syn and are linked by an ethyl–imine N—H⋯N hydrogen bond. This H atom also forms an intermolecular hydrogen bond to the thione S atom, resulting in a supramolecular helical chain propagating along the b axis. The chains are consolidated into a three-dimensional architecture by phenyl-C—H⋯Cl contacts and weak π–π interactions between centrosymmetrically related chlorobenzene rings [inter-centroid distance = 3.9127 (15) Å].
Keywords: crystal structure; hydrogen bonding; thiosemicarbazone.
CCDC reference: 1441045
1. Related literature
For background to the coordination chemistry and applications of metal thiosemicarbazones, see: Dilworth & Hueting (2012). For the structure of a closely related thiosemicarbazone compound, 1-benzothiophene-2-carbaldehyde 4-ethylthiosemicarbazone, with almost planar semicarbazone units (two molecules comprise the asymmetric unit) and E conformations for the C=N bonds, see: Kayed et al. (2009).
2. Experimental
2.1. Crystal data
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2.3. Refinement
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Data collection: CrysAlis PRO (Agilent, 2013); cell CrysAlis PRO; data reduction: CrysAlis PRO; program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL2014 (Sheldrick, 2015); molecular graphics: ORTEP-3 for Windows (Farrugia, 2012) and DIAMOND (Brandenburg, 2006); software used to prepare material for publication: publCIF (Westrip, 2010).
Supporting information
CCDC reference: 1441045
https://doi.org/10.1107/S2056989015023531/hb7555sup1.cif
contains datablocks 1, I. DOI:Structure factors: contains datablock I. DOI: https://doi.org/10.1107/S2056989015023531/hb7555Isup2.hkl
Supporting information file. DOI: https://doi.org/10.1107/S2056989015023531/hb7555Isup3.cml
An ethanol solution (20 ml) of 4-chlorochalcone (0.243 g, 1 mmol) was slowly added to a solution of 4-ethyl-3-thiosemicarbazide (0.119 g, 1 mmol) in absolute ethanol (20 ml), while stirring and heating for about 20 mins. The yellow precipitate was filtered, washed with cold ethanol and dried in vacuo. Light brown prisms of the title compound were grown at room temperature from the slow evaporation of a solvent mixture of dimethylformamide and acetonitrile; M.pt: 154–156 °C.
Carbon-bound H-atoms were placed in calculated positions (C—H = 0.93 to 0.97 Å) and were included in the
in the riding model approximation with Uiso(H) = 1.2–1.5Ueq(C). The N—H atom was refined with N—H = 0.88±0.01 Å, and with Uiso(H) = 1.2Ueq(N).For background to the coordination chemistry and applications of metal thiosemicarbazones, see: Dilworth & Hueting (2012). For the structure of a closely related thiosemicarbazone compound, 1-benzothiophene-2-carbaldehyde 4-ethylthiosemicarbazone, with almost planar semicarbazone units (two molecules comprise the asymmetric unit) and E conformations for the C═N bonds, see: Kayed et al. (2009).
Data collection: CrysAlis PRO (Agilent, 2013); cell
CrysAlis PRO (Agilent, 2013); data reduction: CrysAlis PRO (Agilent, 2013); program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL2014 (Sheldrick, 2015); molecular graphics: ORTEP-3 for Windows (Farrugia, 2012) and DIAMOND (Brandenburg, 2006); software used to prepare material for publication: publCIF (Westrip, 2010).C18H18ClN3S | F(000) = 720 |
Mr = 343.86 | Dx = 1.284 Mg m−3 |
Monoclinic, P21/c | Mo Kα radiation, λ = 0.71073 Å |
a = 10.580 (1) Å | Cell parameters from 2181 reflections |
b = 12.0438 (9) Å | θ = 2.9–27.5° |
c = 13.9561 (10) Å | µ = 0.33 mm−1 |
β = 90.196 (8)° | T = 293 K |
V = 1778.3 (2) Å3 | Prism, light-brown |
Z = 4 | 0.20 × 0.15 × 0.10 mm |
Agilent SuperNova Dual diffractometer with an Atlas detector | 4078 independent reflections |
Radiation source: SuperNova (Mo) X-ray Source | 1963 reflections with I > 2σ(I) |
Mirror monochromator | Rint = 0.051 |
Detector resolution: 10.4041 pixels mm-1 | θmax = 27.5°, θmin = 2.9° |
ω scan | h = −13→12 |
Absorption correction: multi-scan (CrysAlis PRO; Agilent, 2013) | k = −14→15 |
Tmin = 0.800, Tmax = 1.000 | l = −18→18 |
11178 measured reflections |
Refinement on F2 | Hydrogen site location: mixed |
Least-squares matrix: full | H-atom parameters constrained |
R[F2 > 2σ(F2)] = 0.038 | w = 1/[σ2(Fo2) + (0.0463P)2] where P = (Fo2 + 2Fc2)/3 |
wR(F2) = 0.120 | (Δ/σ)max = 0.001 |
S = 1.00 | Δρmax = 0.20 e Å−3 |
4078 reflections | Δρmin = −0.25 e Å−3 |
216 parameters | Extinction correction: SHELXL2014 (Sheldrick, 2014), Fc*=kFc[1+0.001xFc2λ3/sin(2θ)]-1/4 |
2 restraints | Extinction coefficient: 0.0044 (7) |
C18H18ClN3S | V = 1778.3 (2) Å3 |
Mr = 343.86 | Z = 4 |
Monoclinic, P21/c | Mo Kα radiation |
a = 10.580 (1) Å | µ = 0.33 mm−1 |
b = 12.0438 (9) Å | T = 293 K |
c = 13.9561 (10) Å | 0.20 × 0.15 × 0.10 mm |
β = 90.196 (8)° |
Agilent SuperNova Dual diffractometer with an Atlas detector | 4078 independent reflections |
Absorption correction: multi-scan (CrysAlis PRO; Agilent, 2013) | 1963 reflections with I > 2σ(I) |
Tmin = 0.800, Tmax = 1.000 | Rint = 0.051 |
11178 measured reflections |
R[F2 > 2σ(F2)] = 0.038 | 2 restraints |
wR(F2) = 0.120 | H-atom parameters constrained |
S = 1.00 | Δρmax = 0.20 e Å−3 |
4078 reflections | Δρmin = −0.25 e Å−3 |
216 parameters |
Geometry. All esds (except the esd in the dihedral angle between two l.s. planes) are estimated using the full covariance matrix. The cell esds are taken into account individually in the estimation of esds in distances, angles and torsion angles; correlations between esds in cell parameters are only used when they are defined by crystal symmetry. An approximate (isotropic) treatment of cell esds is used for estimating esds involving l.s. planes. |
x | y | z | Uiso*/Ueq | ||
S1 | 1.05835 (7) | −0.02341 (6) | 0.20649 (5) | 0.0606 (2) | |
Cl1 | 0.48690 (8) | 0.72659 (6) | 0.71676 (5) | 0.0754 (3) | |
N1 | 1.0584 (2) | 0.19712 (18) | 0.23053 (16) | 0.0579 (6) | |
H1N | 1.025 (2) | 0.2566 (14) | 0.2562 (18) | 0.070* | |
N2 | 0.9246 (2) | 0.09776 (16) | 0.32430 (15) | 0.0543 (6) | |
H2N | 0.900 (2) | 0.0320 (11) | 0.3439 (17) | 0.065* | |
N3 | 0.88627 (18) | 0.19560 (15) | 0.36594 (14) | 0.0484 (5) | |
C1 | 1.0138 (2) | 0.0979 (2) | 0.25424 (18) | 0.0470 (6) | |
C2 | 1.1491 (2) | 0.2179 (2) | 0.1541 (2) | 0.0636 (8) | |
H2A | 1.2065 | 0.1553 | 0.1494 | 0.076* | |
H2B | 1.1986 | 0.2832 | 0.1699 | 0.076* | |
C3 | 1.0860 (3) | 0.2351 (4) | 0.0601 (2) | 0.1085 (13) | |
H3A | 1.0393 | 0.1696 | 0.0431 | 0.163* | |
H3B | 1.1485 | 0.2497 | 0.0121 | 0.163* | |
H3C | 1.0292 | 0.2971 | 0.0643 | 0.163* | |
C4 | 0.8004 (2) | 0.18918 (18) | 0.43172 (16) | 0.0420 (6) | |
C5 | 0.7641 (2) | 0.29357 (18) | 0.47552 (16) | 0.0443 (6) | |
H5 | 0.8101 | 0.3565 | 0.4592 | 0.053* | |
C6 | 0.6697 (2) | 0.30579 (18) | 0.53736 (16) | 0.0434 (6) | |
H6 | 0.6254 | 0.2419 | 0.5537 | 0.052* | |
C7 | 0.6281 (2) | 0.40943 (18) | 0.58244 (16) | 0.0409 (6) | |
C8 | 0.5030 (2) | 0.42061 (19) | 0.61122 (16) | 0.0463 (6) | |
H8 | 0.4477 | 0.3614 | 0.6026 | 0.056* | |
C9 | 0.4589 (3) | 0.5176 (2) | 0.65233 (16) | 0.0517 (7) | |
H9 | 0.3749 | 0.5240 | 0.6708 | 0.062* | |
C10 | 0.5415 (3) | 0.60409 (19) | 0.66531 (16) | 0.0504 (7) | |
C11 | 0.6661 (3) | 0.5955 (2) | 0.63902 (18) | 0.0576 (7) | |
H11 | 0.7209 | 0.6548 | 0.6489 | 0.069* | |
C12 | 0.7099 (3) | 0.49840 (19) | 0.59786 (18) | 0.0529 (7) | |
H12 | 0.7943 | 0.4925 | 0.5804 | 0.063* | |
C41 | 0.7411 (2) | 0.08309 (17) | 0.46264 (17) | 0.0391 (6) | |
C42 | 0.6659 (2) | 0.02282 (19) | 0.39972 (17) | 0.0446 (6) | |
H42 | 0.6525 | 0.0488 | 0.3377 | 0.054* | |
C43 | 0.6108 (2) | −0.07542 (19) | 0.42866 (19) | 0.0506 (7) | |
H43 | 0.5608 | −0.1156 | 0.3860 | 0.061* | |
C44 | 0.6294 (2) | −0.1139 (2) | 0.5200 (2) | 0.0550 (7) | |
H44 | 0.5916 | −0.1799 | 0.5394 | 0.066* | |
C45 | 0.7037 (2) | −0.0552 (2) | 0.58311 (19) | 0.0553 (7) | |
H45 | 0.7163 | −0.0817 | 0.6450 | 0.066* | |
C46 | 0.7597 (2) | 0.0428 (2) | 0.55490 (17) | 0.0491 (6) | |
H46 | 0.8101 | 0.0821 | 0.5978 | 0.059* |
U11 | U22 | U33 | U12 | U13 | U23 | |
S1 | 0.0614 (5) | 0.0544 (4) | 0.0661 (5) | 0.0084 (3) | 0.0204 (4) | −0.0080 (4) |
Cl1 | 0.1222 (7) | 0.0502 (4) | 0.0539 (4) | 0.0289 (4) | 0.0068 (4) | −0.0074 (3) |
N1 | 0.0567 (14) | 0.0503 (14) | 0.0670 (15) | −0.0007 (11) | 0.0263 (12) | 0.0014 (12) |
N2 | 0.0638 (14) | 0.0380 (12) | 0.0614 (13) | 0.0005 (10) | 0.0292 (11) | −0.0016 (11) |
N3 | 0.0531 (12) | 0.0375 (11) | 0.0548 (12) | 0.0017 (9) | 0.0176 (11) | −0.0023 (10) |
C1 | 0.0433 (14) | 0.0470 (16) | 0.0506 (14) | 0.0010 (11) | 0.0098 (12) | −0.0017 (13) |
C2 | 0.0500 (16) | 0.0699 (18) | 0.0710 (19) | −0.0065 (13) | 0.0207 (15) | 0.0061 (16) |
C3 | 0.078 (2) | 0.172 (4) | 0.076 (2) | −0.021 (2) | 0.006 (2) | 0.031 (3) |
C4 | 0.0426 (14) | 0.0386 (14) | 0.0450 (14) | −0.0014 (10) | 0.0090 (12) | −0.0001 (12) |
C5 | 0.0482 (15) | 0.0349 (13) | 0.0500 (14) | −0.0011 (10) | 0.0094 (12) | −0.0001 (11) |
C6 | 0.0465 (14) | 0.0378 (14) | 0.0459 (14) | −0.0015 (10) | 0.0062 (12) | −0.0017 (11) |
C7 | 0.0491 (15) | 0.0368 (13) | 0.0368 (13) | 0.0022 (11) | 0.0066 (11) | 0.0014 (11) |
C8 | 0.0537 (16) | 0.0411 (14) | 0.0442 (14) | 0.0000 (11) | 0.0115 (12) | 0.0051 (12) |
C9 | 0.0611 (17) | 0.0494 (16) | 0.0448 (15) | 0.0155 (13) | 0.0141 (13) | 0.0075 (13) |
C10 | 0.079 (2) | 0.0373 (14) | 0.0348 (13) | 0.0122 (13) | 0.0034 (13) | −0.0021 (12) |
C11 | 0.0728 (19) | 0.0446 (16) | 0.0555 (16) | −0.0044 (13) | −0.0035 (15) | −0.0065 (14) |
C12 | 0.0543 (17) | 0.0489 (16) | 0.0555 (16) | −0.0019 (12) | 0.0096 (13) | −0.0080 (13) |
C41 | 0.0404 (13) | 0.0342 (13) | 0.0427 (14) | 0.0028 (10) | 0.0110 (11) | −0.0028 (11) |
C42 | 0.0470 (15) | 0.0450 (14) | 0.0419 (13) | 0.0016 (11) | 0.0075 (12) | −0.0019 (12) |
C43 | 0.0538 (16) | 0.0433 (14) | 0.0547 (17) | −0.0066 (12) | 0.0098 (13) | −0.0102 (13) |
C44 | 0.0603 (17) | 0.0396 (14) | 0.0652 (18) | −0.0061 (12) | 0.0154 (15) | 0.0042 (14) |
C45 | 0.0653 (18) | 0.0503 (16) | 0.0502 (15) | 0.0011 (13) | 0.0076 (14) | 0.0104 (14) |
C46 | 0.0532 (16) | 0.0472 (15) | 0.0469 (15) | −0.0046 (12) | 0.0003 (12) | −0.0003 (13) |
S1—C1 | 1.674 (2) | C7—C8 | 1.392 (3) |
Cl1—C10 | 1.740 (2) | C7—C12 | 1.393 (3) |
N1—C1 | 1.327 (3) | C8—C9 | 1.383 (3) |
N1—C2 | 1.459 (3) | C8—H8 | 0.9300 |
N1—H1N | 0.874 (10) | C9—C10 | 1.372 (4) |
N2—C1 | 1.361 (3) | C9—H9 | 0.9300 |
N2—N3 | 1.376 (2) | C10—C11 | 1.373 (4) |
N2—H2N | 0.878 (10) | C11—C12 | 1.384 (3) |
N3—C4 | 1.296 (2) | C11—H11 | 0.9300 |
C2—C3 | 1.484 (4) | C12—H12 | 0.9300 |
C2—H2A | 0.9700 | C41—C42 | 1.388 (3) |
C2—H2B | 0.9700 | C41—C46 | 1.389 (3) |
C3—H3A | 0.9600 | C42—C43 | 1.380 (3) |
C3—H3B | 0.9600 | C42—H42 | 0.9300 |
C3—H3C | 0.9600 | C43—C44 | 1.370 (3) |
C4—C5 | 1.450 (3) | C43—H43 | 0.9300 |
C4—C41 | 1.488 (3) | C44—C45 | 1.375 (4) |
C5—C6 | 1.330 (3) | C44—H44 | 0.9300 |
C5—H5 | 0.9300 | C45—C46 | 1.379 (3) |
C6—C7 | 1.466 (3) | C45—H45 | 0.9300 |
C6—H6 | 0.9300 | C46—H46 | 0.9300 |
C1—N1—C2 | 124.9 (2) | C9—C8—C7 | 121.6 (2) |
C1—N1—H1N | 119.5 (17) | C9—C8—H8 | 119.2 |
C2—N1—H1N | 115.1 (17) | C7—C8—H8 | 119.2 |
C1—N2—N3 | 120.56 (18) | C10—C9—C8 | 118.7 (2) |
C1—N2—H2N | 115.5 (16) | C10—C9—H9 | 120.6 |
N3—N2—H2N | 123.6 (16) | C8—C9—H9 | 120.6 |
C4—N3—N2 | 117.15 (18) | C9—C10—C11 | 121.3 (2) |
N1—C1—N2 | 115.3 (2) | C9—C10—Cl1 | 119.1 (2) |
N1—C1—S1 | 125.86 (17) | C11—C10—Cl1 | 119.6 (2) |
N2—C1—S1 | 118.80 (17) | C10—C11—C12 | 119.8 (2) |
N1—C2—C3 | 112.0 (2) | C10—C11—H11 | 120.1 |
N1—C2—H2A | 109.2 | C12—C11—H11 | 120.1 |
C3—C2—H2A | 109.2 | C11—C12—C7 | 120.4 (2) |
N1—C2—H2B | 109.2 | C11—C12—H12 | 119.8 |
C3—C2—H2B | 109.2 | C7—C12—H12 | 119.8 |
H2A—C2—H2B | 107.9 | C42—C41—C46 | 118.9 (2) |
C2—C3—H3A | 109.5 | C42—C41—C4 | 120.5 (2) |
C2—C3—H3B | 109.5 | C46—C41—C4 | 120.7 (2) |
H3A—C3—H3B | 109.5 | C43—C42—C41 | 120.3 (2) |
C2—C3—H3C | 109.5 | C43—C42—H42 | 119.8 |
H3A—C3—H3C | 109.5 | C41—C42—H42 | 119.8 |
H3B—C3—H3C | 109.5 | C44—C43—C42 | 120.2 (2) |
N3—C4—C5 | 115.73 (19) | C44—C43—H43 | 119.9 |
N3—C4—C41 | 123.63 (19) | C42—C43—H43 | 119.9 |
C5—C4—C41 | 120.64 (18) | C43—C44—C45 | 120.1 (2) |
C6—C5—C4 | 124.7 (2) | C43—C44—H44 | 119.9 |
C6—C5—H5 | 117.6 | C45—C44—H44 | 119.9 |
C4—C5—H5 | 117.6 | C44—C45—C46 | 120.2 (2) |
C5—C6—C7 | 126.8 (2) | C44—C45—H45 | 119.9 |
C5—C6—H6 | 116.6 | C46—C45—H45 | 119.9 |
C7—C6—H6 | 116.6 | C45—C46—C41 | 120.2 (2) |
C8—C7—C12 | 118.1 (2) | C45—C46—H46 | 119.9 |
C8—C7—C6 | 119.6 (2) | C41—C46—H46 | 119.9 |
C12—C7—C6 | 122.3 (2) | ||
C1—N2—N3—C4 | 179.6 (2) | C9—C10—C11—C12 | 0.5 (4) |
C2—N1—C1—N2 | −176.5 (2) | Cl1—C10—C11—C12 | −179.8 (2) |
C2—N1—C1—S1 | 3.9 (4) | C10—C11—C12—C7 | 0.3 (4) |
N3—N2—C1—N1 | −0.2 (4) | C8—C7—C12—C11 | −1.2 (4) |
N3—N2—C1—S1 | 179.39 (19) | C6—C7—C12—C11 | 178.8 (2) |
C1—N1—C2—C3 | 87.9 (4) | N3—C4—C41—C42 | −65.7 (3) |
N2—N3—C4—C5 | 178.8 (2) | C5—C4—C41—C42 | 114.7 (2) |
N2—N3—C4—C41 | −0.9 (4) | N3—C4—C41—C46 | 114.5 (3) |
N3—C4—C5—C6 | 173.2 (2) | C5—C4—C41—C46 | −65.2 (3) |
C41—C4—C5—C6 | −7.1 (4) | C46—C41—C42—C43 | 0.0 (3) |
C4—C5—C6—C7 | −179.0 (2) | C4—C41—C42—C43 | −179.9 (2) |
C5—C6—C7—C8 | 152.8 (2) | C41—C42—C43—C44 | 0.3 (3) |
C5—C6—C7—C12 | −27.2 (4) | C42—C43—C44—C45 | −0.4 (4) |
C12—C7—C8—C9 | 1.3 (3) | C43—C44—C45—C46 | 0.1 (4) |
C6—C7—C8—C9 | −178.7 (2) | C44—C45—C46—C41 | 0.2 (4) |
C7—C8—C9—C10 | −0.4 (4) | C42—C41—C46—C45 | −0.2 (3) |
C8—C9—C10—C11 | −0.5 (4) | C4—C41—C46—C45 | 179.6 (2) |
C8—C9—C10—Cl1 | 179.87 (18) |
D—H···A | D—H | H···A | D···A | D—H···A |
N1—H1N···N3 | 0.88 (2) | 2.25 (2) | 2.629 (3) | 106 (2) |
N1—H1N···S1i | 0.88 (2) | 2.84 (2) | 3.693 (2) | 165 (2) |
C43—H43···Cl1ii | 0.93 | 2.82 | 3.708 (3) | 160 |
Symmetry codes: (i) −x+2, y+1/2, −z+1/2; (ii) x, −y+1/2, z−1/2. |
D—H···A | D—H | H···A | D···A | D—H···A |
N1—H1N···N3 | 0.876 (19) | 2.25 (2) | 2.629 (3) | 106.1 (15) |
N1—H1N···S1i | 0.876 (19) | 2.841 (18) | 3.693 (2) | 164.5 (19) |
C43—H43···Cl1ii | 0.93 | 2.82 | 3.708 (3) | 160 |
Symmetry codes: (i) −x+2, y+1/2, −z+1/2; (ii) x, −y+1/2, z−1/2. |
Acknowledgements
This research was funded by Universiti Putra Malaysia (UPM) under Research University Grant Schemes (RUGS No. 9419400), the Fundamental Research Grant Scheme (FRGS No. 5524425) and the Science Fund (Science Fund No. 06–01-04-SF810). MYT wishes to thank the UPM for the award of a Graduate Research Fellowship.
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