organic compounds
(E)-2-(4-Benzyloxy-2-hydroxybenzylidene)-N-phenylhydrazinecarbothioamide
aDepartment of Applied Chemistry, Cochin University of Science and Technology, Kochi 682 022, India, and bDepartment of Chemistry, Faculty of Science, Eastern University, Sri Lanka, Chenkalady, Sri Lanka
*Correspondence e-mail: eesans@yahoo.com
The title compound, C21H19N3O2S, exists in the thione form. The configuration about the C=N bond is E. The hydrazinecarbothioamide unit adopts an almost planar arrangement, with maximum deviations of 0.016 (3) and −0.016 (2) Å for the two thiourea N atoms. An intramolecular O—H⋯N hydrogen bond occurs. Weak intermolecular N—H⋯S, C—H⋯O and C—H⋯π interactions are observed in the crystal structure.
Related literature
For applications of hydrazinecarbothioamide and its derivatives, see: Casas et al. (2000); Lukevics et al. (1995). For the synthesis, see: Joseph et al. (2004). For related hydrazinecarbothioamide structures, see: Seena et al. (2008). For standard bond lengths, see: Allen et al. (1987).
Experimental
Crystal data
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Refinement
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Data collection: APEX2 (Bruker, 2004); cell APEX2 and SAINT (Bruker, 2004); data reduction: SAINT and XPREP (Bruker, 2004); program(s) used to solve structure: SIR92 (Altomare et al., 1994); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: ORTEP-3 (Farrugia, 1997); software used to prepare material for publication: SHELXL97 and publCIF (Westrip, 2010).
Supporting information
https://doi.org/10.1107/S1600536811049658/jj2110sup1.cif
contains datablocks global, I. DOI:Structure factors: contains datablock I. DOI: https://doi.org/10.1107/S1600536811049658/jj2110Isup2.hkl
Supporting information file. DOI: https://doi.org/10.1107/S1600536811049658/jj2110Isup3.cml
The title compound was prepared by adapting a reported procedure (Joseph et al., 2004) by refluxing a mixture of methanolic solutions of N-phenylhydrazinecarbothioamide (1.672 g, 10 mmol) and 4-(benzyloxy)-2-hydroxybenzaldehyde (2.282 g, 10 mmol) for four hours after adding 5 drops of acetic acid. Colorless crystals were collected, washed with few drops of methanol and dried over P4O10 in vacuo. Single crystals of the title compound suitable for X-ray analysis were obtained by slow evaporation from its methanolic solution.
All H atoms on C were placed in calculated positions, guided by Fourier difference maps, with C—H bond distances 0.93Å (CH) or 0.97Å (CH2). H atoms were assigned as Uiso=1.2Ueq. H3A and H2B hydrogen atoms were located from Fourier diffrence maps and restrained using the DFIX instruction. H2A was located from a Fourier difference map and freely refined.
Derivatives of hydrazinecarbothioamide are an important group of multidentate ligands with potential binding sites available for an extensive diversity of metal ions. A large number of studies have been devoted to the search for derivatives of hydrazinecarbothioamide, which have been used as drugs and have the ability to form complexes (Casas et al., 2000). These compounds find substantial applications in different aspects of modern scientific research (Lukevics et al., 1995).
The title compound (E)-2-[4-(benzyloxy)-2-hydroxybenzylidene]-N-πhenylhydrazinecarbothioamide is found to exist in an E configuration having N3 and N1 atoms cis to each other with respect to C15–N2 bond (Fig. 1). The S1/C15/N12/N1 torsion-angle [-178.27 (19)°] suggests that the thionyl atom S1 is located trans to the azomethane nitrogen atom N1. The closeness of the C13═S1 bond distance [1.665 (3) Å] to the expected distance of a C═S bond (1.60 Å) (Allen et al., 1987; Seena et al., 2008) indicates that the compound exists in the thione form and it is further confirmed by the N1—N2 and N2—C15 bond distances. The hydrazinecarbothioamide moiety, (N1/N2/N3/C15/S1/C16), is nearly planar with a maximum deviation of 0.016 (3) and -0.016 (2) Å for atoms N3 and N2 from its least squares plane value. The three aromatic rings are twisted with a dihedral angle of 86.43 (17) Å between the least squares plane of the rings C1—C6 and C8—C13, 67.99 (19) Å between rings C1—C6 and C16—C21 and 29.77 (16) Å between rings C8—C13 and C16—C21, respectively.
An O2–H2A···N1 intramolecular hydrogen bond (Table 1), is observed which contributes to the planarity of the N1/C14/C11/C10/O2 group with a maximum deivation of 0.146 (2) Å for atom N1. Weak N—H···S, C—H···O and C—H···Cg π-ring intermolecular interactions (Table 1) are also observed.
For applications of hydrazinecarbothioamide and its derivatives, see: Casas et al. (2000); Lukevics et al. (1995). For the synthesis, see: Joseph et al. (2004). For related hydrazinecarbothioamide structures, see: Seena et al. (2008). For standard bond lengths, see: Allen et al. (1987).
Data collection: APEX2 (Bruker, 2004); cell
APEX2 and SAINT (Bruker, 2004); data reduction: SAINT and XPREP (Bruker, 2004); program(s) used to solve structure: SIR92 (Altomare et al., 1994); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: ORTEP-3 (Farrugia, 1997); software used to prepare material for publication: SHELXL97 (Sheldrick, 2008) and publCIF (Westrip, 2010).Fig. 1. The molecular structure of the title compound with displacement ellipsoids are drawn at 50% probability level. |
C21H19N3O2S | F(000) = 1584 |
Mr = 377.45 | Dx = 1.315 Mg m−3 |
Monoclinic, C2/c | Mo Kα radiation, λ = 0.71073 Å |
Hall symbol: -C 2yc | Cell parameters from 1946 reflections |
a = 24.099 (3) Å | θ = 5.0–28.5° |
b = 16.173 (2) Å | µ = 0.19 mm−1 |
c = 9.8370 (11) Å | T = 296 K |
β = 95.906 (7)° | Block, colorless |
V = 3813.5 (8) Å3 | 0.30 × 0.25 × 0.25 mm |
Z = 8 |
Bruker Kappa APEXII CCD diffractometer | 3351 independent reflections |
Radiation source: fine-focus sealed tube | 1848 reflections with I > 2σ(I) |
Graphite monochromator | Rint = 0.073 |
Detector resolution: 8.33 pixels mm-1 | θmax = 25.0°, θmin = 2.5° |
ω and φ scan | h = −28→28 |
Absorption correction: multi-scan (SADABS; Sheldrick, 2008) | k = −17→19 |
Tmin = 0.945, Tmax = 0.954 | l = −11→11 |
14236 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)] = 0.049 | Hydrogen site location: inferred from neighbouring sites |
wR(F2) = 0.148 | H atoms treated by a mixture of independent and constrained refinement |
S = 1.01 | w = 1/[σ2(Fo2) + (0.0662P)2 + 0.0863P] where P = (Fo2 + 2Fc2)/3 |
3351 reflections | (Δ/σ)max < 0.001 |
256 parameters | Δρmax = 0.19 e Å−3 |
2 restraints | Δρmin = −0.22 e Å−3 |
C21H19N3O2S | V = 3813.5 (8) Å3 |
Mr = 377.45 | Z = 8 |
Monoclinic, C2/c | Mo Kα radiation |
a = 24.099 (3) Å | µ = 0.19 mm−1 |
b = 16.173 (2) Å | T = 296 K |
c = 9.8370 (11) Å | 0.30 × 0.25 × 0.25 mm |
β = 95.906 (7)° |
Bruker Kappa APEXII CCD diffractometer | 3351 independent reflections |
Absorption correction: multi-scan (SADABS; Sheldrick, 2008) | 1848 reflections with I > 2σ(I) |
Tmin = 0.945, Tmax = 0.954 | Rint = 0.073 |
14236 measured reflections |
R[F2 > 2σ(F2)] = 0.049 | 2 restraints |
wR(F2) = 0.148 | H atoms treated by a mixture of independent and constrained refinement |
S = 1.01 | Δρmax = 0.19 e Å−3 |
3351 reflections | Δρmin = −0.22 e Å−3 |
256 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 | ||
S1 | 0.49744 (4) | 0.63473 (5) | 1.03069 (9) | 0.0709 (3) | |
O1 | 0.76193 (9) | 0.36630 (13) | 0.4043 (2) | 0.0729 (7) | |
O2 | 0.65146 (10) | 0.57793 (14) | 0.5709 (2) | 0.0737 (7) | |
N1 | 0.59125 (9) | 0.53647 (16) | 0.7749 (2) | 0.0511 (6) | |
N2 | 0.55333 (10) | 0.54839 (17) | 0.8682 (2) | 0.0550 (7) | |
N3 | 0.57110 (11) | 0.68512 (18) | 0.8607 (3) | 0.0664 (8) | |
C1 | 0.79384 (15) | 0.3466 (2) | 0.1029 (4) | 0.0845 (12) | |
H1 | 0.7561 | 0.3571 | 0.0800 | 0.101* | |
C2 | 0.82307 (18) | 0.3021 (3) | 0.0138 (4) | 0.1015 (14) | |
H2 | 0.8051 | 0.2830 | −0.0683 | 0.122* | |
C3 | 0.87770 (18) | 0.2865 (3) | 0.0463 (5) | 0.0936 (13) | |
H3 | 0.8974 | 0.2572 | −0.0144 | 0.112* | |
C4 | 0.90424 (15) | 0.3129 (3) | 0.1665 (5) | 0.0871 (12) | |
H4 | 0.9418 | 0.3010 | 0.1890 | 0.104* | |
C5 | 0.87465 (14) | 0.3584 (2) | 0.2567 (4) | 0.0787 (11) | |
H5 | 0.8927 | 0.3771 | 0.3391 | 0.094* | |
C6 | 0.81945 (14) | 0.3754 (2) | 0.2240 (3) | 0.0630 (9) | |
C7 | 0.78667 (13) | 0.4237 (2) | 0.3182 (3) | 0.0681 (10) | |
H7A | 0.8110 | 0.4614 | 0.3730 | 0.082* | |
H7B | 0.7579 | 0.4558 | 0.2658 | 0.082* | |
C8 | 0.72517 (12) | 0.3956 (2) | 0.4887 (3) | 0.0562 (8) | |
C9 | 0.70723 (11) | 0.47536 (19) | 0.4902 (3) | 0.0530 (8) | |
H9 | 0.7212 | 0.5143 | 0.4331 | 0.064* | |
C10 | 0.66811 (11) | 0.49850 (19) | 0.5768 (3) | 0.0496 (7) | |
C11 | 0.64668 (11) | 0.44162 (19) | 0.6633 (3) | 0.0493 (7) | |
C12 | 0.66643 (13) | 0.3615 (2) | 0.6596 (3) | 0.0701 (10) | |
H12 | 0.6529 | 0.3225 | 0.7173 | 0.084* | |
C13 | 0.70480 (14) | 0.3371 (2) | 0.5751 (3) | 0.0751 (10) | |
H13 | 0.7171 | 0.2827 | 0.5752 | 0.090* | |
C14 | 0.60610 (11) | 0.4627 (2) | 0.7560 (3) | 0.0534 (8) | |
H14 | 0.5904 | 0.4205 | 0.8036 | 0.064* | |
C15 | 0.54245 (11) | 0.62420 (19) | 0.9143 (3) | 0.0513 (7) | |
C16 | 0.57073 (14) | 0.7713 (2) | 0.8776 (3) | 0.0637 (9) | |
C17 | 0.61716 (16) | 0.8131 (3) | 0.8441 (3) | 0.0847 (11) | |
H17 | 0.6475 | 0.7836 | 0.8183 | 0.102* | |
C18 | 0.6191 (2) | 0.8979 (3) | 0.8485 (4) | 0.1049 (14) | |
H18 | 0.6506 | 0.9255 | 0.8248 | 0.126* | |
C19 | 0.5749 (2) | 0.9422 (3) | 0.8877 (4) | 0.1129 (16) | |
H19 | 0.5759 | 0.9996 | 0.8916 | 0.135* | |
C20 | 0.5290 (2) | 0.8994 (3) | 0.9210 (4) | 0.1051 (14) | |
H20 | 0.4988 | 0.9287 | 0.9475 | 0.126* | |
C21 | 0.52644 (15) | 0.8151 (2) | 0.9165 (3) | 0.0814 (11) | |
H21 | 0.4948 | 0.7878 | 0.9396 | 0.098* | |
H2A | 0.6261 (15) | 0.589 (2) | 0.621 (4) | 0.110 (14)* | |
H3A | 0.5945 (10) | 0.665 (2) | 0.811 (3) | 0.091 (12)* | |
H2B | 0.5385 (10) | 0.5062 (10) | 0.901 (3) | 0.056 (9)* |
U11 | U22 | U33 | U12 | U13 | U23 | |
S1 | 0.0775 (6) | 0.0587 (6) | 0.0858 (6) | 0.0045 (5) | 0.0530 (5) | −0.0059 (4) |
O1 | 0.0896 (15) | 0.0552 (15) | 0.0845 (14) | 0.0196 (12) | 0.0601 (12) | 0.0102 (11) |
O2 | 0.0914 (17) | 0.0506 (16) | 0.0884 (16) | 0.0192 (13) | 0.0544 (14) | 0.0081 (12) |
N1 | 0.0532 (14) | 0.0533 (18) | 0.0511 (14) | 0.0046 (13) | 0.0266 (11) | −0.0048 (11) |
N2 | 0.0573 (15) | 0.0492 (19) | 0.0637 (16) | −0.0012 (14) | 0.0309 (12) | −0.0037 (13) |
N3 | 0.0770 (18) | 0.0537 (19) | 0.0762 (18) | −0.0036 (15) | 0.0453 (15) | −0.0097 (14) |
C1 | 0.083 (2) | 0.090 (3) | 0.086 (3) | 0.020 (2) | 0.035 (2) | −0.003 (2) |
C2 | 0.102 (3) | 0.119 (4) | 0.089 (3) | 0.022 (3) | 0.040 (2) | −0.019 (2) |
C3 | 0.097 (3) | 0.091 (3) | 0.103 (3) | 0.013 (3) | 0.063 (3) | −0.007 (3) |
C4 | 0.068 (2) | 0.084 (3) | 0.118 (3) | 0.017 (2) | 0.051 (2) | 0.011 (2) |
C5 | 0.072 (2) | 0.085 (3) | 0.084 (2) | 0.011 (2) | 0.0340 (18) | 0.0091 (19) |
C6 | 0.075 (2) | 0.052 (2) | 0.069 (2) | 0.0108 (18) | 0.0398 (17) | 0.0087 (17) |
C7 | 0.077 (2) | 0.063 (2) | 0.072 (2) | 0.0151 (18) | 0.0440 (17) | 0.0118 (16) |
C8 | 0.0612 (18) | 0.051 (2) | 0.0612 (18) | 0.0105 (16) | 0.0308 (15) | −0.0032 (15) |
C9 | 0.0587 (18) | 0.052 (2) | 0.0527 (17) | 0.0045 (15) | 0.0244 (14) | 0.0025 (14) |
C10 | 0.0536 (16) | 0.044 (2) | 0.0539 (17) | 0.0046 (16) | 0.0171 (13) | −0.0049 (14) |
C11 | 0.0540 (17) | 0.046 (2) | 0.0511 (17) | −0.0008 (15) | 0.0226 (13) | −0.0017 (13) |
C12 | 0.088 (2) | 0.052 (2) | 0.079 (2) | 0.0073 (19) | 0.0501 (18) | 0.0112 (16) |
C13 | 0.094 (2) | 0.047 (2) | 0.094 (2) | 0.0149 (19) | 0.058 (2) | 0.0077 (18) |
C14 | 0.0564 (18) | 0.054 (2) | 0.0546 (17) | 0.0014 (16) | 0.0256 (14) | −0.0009 (15) |
C15 | 0.0523 (17) | 0.047 (2) | 0.0569 (17) | 0.0016 (16) | 0.0181 (13) | −0.0051 (15) |
C16 | 0.084 (2) | 0.054 (2) | 0.0575 (19) | −0.0069 (19) | 0.0316 (16) | −0.0037 (16) |
C17 | 0.107 (3) | 0.069 (3) | 0.086 (3) | −0.011 (2) | 0.049 (2) | 0.001 (2) |
C18 | 0.146 (4) | 0.075 (3) | 0.101 (3) | −0.032 (3) | 0.051 (3) | 0.007 (2) |
C19 | 0.180 (5) | 0.052 (3) | 0.115 (3) | −0.011 (3) | 0.056 (3) | 0.005 (2) |
C20 | 0.147 (4) | 0.058 (3) | 0.118 (3) | 0.005 (3) | 0.047 (3) | −0.009 (2) |
C21 | 0.099 (3) | 0.055 (3) | 0.097 (3) | 0.000 (2) | 0.043 (2) | −0.010 (2) |
S1—C15 | 1.665 (3) | C7—H7A | 0.9700 |
O1—C8 | 1.360 (3) | C7—H7B | 0.9700 |
O1—C7 | 1.428 (3) | C8—C9 | 1.360 (4) |
O2—C10 | 1.345 (3) | C8—C13 | 1.395 (4) |
O2—H2A | 0.85 (4) | C9—C10 | 1.386 (3) |
N1—C14 | 1.264 (4) | C9—H9 | 0.9300 |
N1—N2 | 1.374 (3) | C10—C11 | 1.388 (4) |
N2—C15 | 1.342 (4) | C11—C12 | 1.382 (4) |
N2—H2B | 0.8501 (10) | C11—C14 | 1.445 (3) |
N3—C15 | 1.341 (4) | C12—C13 | 1.363 (4) |
N3—C16 | 1.403 (4) | C12—H12 | 0.9300 |
N3—H3A | 0.8501 (11) | C13—H13 | 0.9300 |
C1—C6 | 1.366 (5) | C14—H14 | 0.9300 |
C1—C2 | 1.382 (4) | C16—C21 | 1.369 (4) |
C1—H1 | 0.9300 | C16—C17 | 1.376 (4) |
C2—C3 | 1.346 (5) | C17—C18 | 1.373 (6) |
C2—H2 | 0.9300 | C17—H17 | 0.9300 |
C3—C4 | 1.354 (5) | C18—C19 | 1.372 (6) |
C3—H3 | 0.9300 | C18—H18 | 0.9300 |
C4—C5 | 1.403 (5) | C19—C20 | 1.371 (6) |
C4—H4 | 0.9300 | C19—H19 | 0.9300 |
C5—C6 | 1.364 (4) | C20—C21 | 1.364 (5) |
C5—H5 | 0.9300 | C20—H20 | 0.9300 |
C6—C7 | 1.498 (4) | C21—H21 | 0.9300 |
C8—O1—C7 | 118.2 (2) | C10—C9—H9 | 120.0 |
C10—O2—H2A | 114 (3) | O2—C10—C9 | 116.8 (3) |
C14—N1—N2 | 116.6 (2) | O2—C10—C11 | 122.1 (2) |
C15—N2—N1 | 121.3 (2) | C9—C10—C11 | 121.2 (3) |
C15—N2—H2B | 119.9 (19) | C12—C11—C10 | 117.0 (2) |
N1—N2—H2B | 118.6 (19) | C12—C11—C14 | 119.7 (3) |
C15—N3—C16 | 132.3 (2) | C10—C11—C14 | 123.3 (3) |
C15—N3—H3A | 110 (2) | C13—C12—C11 | 123.0 (3) |
C16—N3—H3A | 117 (2) | C13—C12—H12 | 118.5 |
C6—C1—C2 | 121.1 (4) | C11—C12—H12 | 118.5 |
C6—C1—H1 | 119.4 | C12—C13—C8 | 118.6 (3) |
C2—C1—H1 | 119.4 | C12—C13—H13 | 120.7 |
C3—C2—C1 | 119.8 (4) | C8—C13—H13 | 120.7 |
C3—C2—H2 | 120.1 | N1—C14—C11 | 122.4 (3) |
C1—C2—H2 | 120.1 | N1—C14—H14 | 118.8 |
C2—C3—C4 | 120.7 (3) | C11—C14—H14 | 118.8 |
C2—C3—H3 | 119.7 | N3—C15—N2 | 114.3 (2) |
C4—C3—H3 | 119.7 | N3—C15—S1 | 126.4 (2) |
C3—C4—C5 | 119.5 (4) | N2—C15—S1 | 119.3 (2) |
C3—C4—H4 | 120.2 | C21—C16—C17 | 119.3 (3) |
C5—C4—H4 | 120.2 | C21—C16—N3 | 124.2 (3) |
C6—C5—C4 | 120.2 (4) | C17—C16—N3 | 116.4 (3) |
C6—C5—H5 | 119.9 | C18—C17—C16 | 120.6 (4) |
C4—C5—H5 | 119.9 | C18—C17—H17 | 119.7 |
C5—C6—C1 | 118.6 (3) | C16—C17—H17 | 119.7 |
C5—C6—C7 | 121.5 (3) | C19—C18—C17 | 120.3 (4) |
C1—C6—C7 | 119.8 (3) | C19—C18—H18 | 119.8 |
O1—C7—C6 | 107.9 (3) | C17—C18—H18 | 119.8 |
O1—C7—H7A | 110.1 | C20—C19—C18 | 118.2 (4) |
C6—C7—H7A | 110.1 | C20—C19—H19 | 120.9 |
O1—C7—H7B | 110.1 | C18—C19—H19 | 120.9 |
C6—C7—H7B | 110.1 | C21—C20—C19 | 122.1 (4) |
H7A—C7—H7B | 108.4 | C21—C20—H20 | 118.9 |
O1—C8—C9 | 124.4 (3) | C19—C20—H20 | 118.9 |
O1—C8—C13 | 115.3 (3) | C20—C21—C16 | 119.5 (4) |
C9—C8—C13 | 120.3 (2) | C20—C21—H21 | 120.3 |
C8—C9—C10 | 120.0 (3) | C16—C21—H21 | 120.3 |
C8—C9—H9 | 120.0 | ||
C14—N1—N2—C15 | 167.7 (3) | C10—C11—C12—C13 | −0.6 (5) |
C6—C1—C2—C3 | 0.1 (6) | C14—C11—C12—C13 | −179.8 (3) |
C1—C2—C3—C4 | 1.0 (7) | C11—C12—C13—C8 | 0.1 (6) |
C2—C3—C4—C5 | −1.2 (6) | O1—C8—C13—C12 | −178.0 (3) |
C3—C4—C5—C6 | 0.4 (6) | C9—C8—C13—C12 | 0.5 (5) |
C4—C5—C6—C1 | 0.6 (5) | N2—N1—C14—C11 | −178.5 (2) |
C4—C5—C6—C7 | 179.9 (3) | C12—C11—C14—N1 | 171.9 (3) |
C2—C1—C6—C5 | −0.9 (6) | C10—C11—C14—N1 | −7.2 (5) |
C2—C1—C6—C7 | 179.8 (3) | C16—N3—C15—N2 | 177.7 (3) |
C8—O1—C7—C6 | −173.0 (3) | C16—N3—C15—S1 | −3.7 (5) |
C5—C6—C7—O1 | −91.8 (4) | N1—N2—C15—N3 | 0.5 (4) |
C1—C6—C7—O1 | 87.5 (4) | N1—N2—C15—S1 | −178.3 (2) |
C7—O1—C8—C9 | 4.8 (5) | C15—N3—C16—C21 | −24.8 (6) |
C7—O1—C8—C13 | −176.8 (3) | C15—N3—C16—C17 | 159.3 (3) |
O1—C8—C9—C10 | 177.7 (3) | C21—C16—C17—C18 | −0.5 (5) |
C13—C8—C9—C10 | −0.7 (5) | N3—C16—C17—C18 | 175.6 (3) |
C8—C9—C10—O2 | −178.7 (3) | C16—C17—C18—C19 | 0.6 (6) |
C8—C9—C10—C11 | 0.2 (5) | C17—C18—C19—C20 | −0.5 (7) |
O2—C10—C11—C12 | 179.3 (3) | C18—C19—C20—C21 | 0.2 (7) |
C9—C10—C11—C12 | 0.5 (4) | C19—C20—C21—C16 | 0.0 (6) |
O2—C10—C11—C14 | −1.5 (5) | C17—C16—C21—C20 | 0.2 (5) |
C9—C10—C11—C14 | 179.6 (3) | N3—C16—C21—C20 | −175.6 (3) |
Cg1 and Cg2 are the centroids of the C16–C21 and C1–C6 rings, respectively. |
D—H···A | D—H | H···A | D···A | D—H···A |
O2—H2A···N1 | 0.85 (4) | 1.99 (4) | 2.679 (3) | 137 (4) |
N2—H2B···S1i | 0.85 (1) | 2.55 (1) | 3.392 (3) | 170 (3) |
C13—H13···O1ii | 0.93 | 2.47 | 3.388 (4) | 171 |
C5—H5···Cgiii | 0.93 | 2.80 | 3.643 (4) | 152 |
C12—H12···Cgii | 0.93 | 2.87 | 3.741 (4) | 157 |
Symmetry codes: (i) −x+1, −y+1, −z+2; (ii) −x+3/2, −y+1/2, −z+1; (iii) −x+3/2, y−1/2, −z+3/2. |
Experimental details
Crystal data | |
Chemical formula | C21H19N3O2S |
Mr | 377.45 |
Crystal system, space group | Monoclinic, C2/c |
Temperature (K) | 296 |
a, b, c (Å) | 24.099 (3), 16.173 (2), 9.8370 (11) |
β (°) | 95.906 (7) |
V (Å3) | 3813.5 (8) |
Z | 8 |
Radiation type | Mo Kα |
µ (mm−1) | 0.19 |
Crystal size (mm) | 0.30 × 0.25 × 0.25 |
Data collection | |
Diffractometer | Bruker Kappa APEXII CCD |
Absorption correction | Multi-scan (SADABS; Sheldrick, 2008) |
Tmin, Tmax | 0.945, 0.954 |
No. of measured, independent and observed [I > 2σ(I)] reflections | 14236, 3351, 1848 |
Rint | 0.073 |
(sin θ/λ)max (Å−1) | 0.595 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.049, 0.148, 1.01 |
No. of reflections | 3351 |
No. of parameters | 256 |
No. of restraints | 2 |
H-atom treatment | H atoms treated by a mixture of independent and constrained refinement |
Δρmax, Δρmin (e Å−3) | 0.19, −0.22 |
Computer programs: APEX2 (Bruker, 2004), APEX2 and SAINT (Bruker, 2004), SAINT and XPREP (Bruker, 2004), SIR92 (Altomare et al., 1994), ORTEP-3 (Farrugia, 1997), SHELXL97 (Sheldrick, 2008) and publCIF (Westrip, 2010).
Cg1 and Cg2 are the centroids of the C16–C21 and C1–C6 rings, respectively. |
D—H···A | D—H | H···A | D···A | D—H···A |
O2—H2A···N1 | 0.85 (4) | 1.99 (4) | 2.679 (3) | 137 (4) |
N2—H2B···S1i | 0.8501 (10) | 2.552 (5) | 3.392 (3) | 170 (3) |
C13—H13···O1ii | 0.93 | 2.47 | 3.388 (4) | 171.4 |
C5—H5···Cgiii | 0.93 | 2.80 | 3.643 (4) | 152 |
C12—H12···Cgii | 0.93 | 2.87 | 3.741 (4) | 157 |
Symmetry codes: (i) −x+1, −y+1, −z+2; (ii) −x+3/2, −y+1/2, −z+1; (iii) −x+3/2, y−1/2, −z+3/2. |
Acknowledgements
KN is thankful to the Council of Scientific and Industrial Research, New Delhi, India, for financial support in the form of a Junior Research Fellowship. The authors are thankful to the Sophisticated Analytical Instrument Facility, Cochin University of Science & Technology, Kochi, India, for providing the single-crystal XRD data.
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.
Derivatives of hydrazinecarbothioamide are an important group of multidentate ligands with potential binding sites available for an extensive diversity of metal ions. A large number of studies have been devoted to the search for derivatives of hydrazinecarbothioamide, which have been used as drugs and have the ability to form complexes (Casas et al., 2000). These compounds find substantial applications in different aspects of modern scientific research (Lukevics et al., 1995).
The title compound (E)-2-[4-(benzyloxy)-2-hydroxybenzylidene]-N-πhenylhydrazinecarbothioamide is found to exist in an E configuration having N3 and N1 atoms cis to each other with respect to C15–N2 bond (Fig. 1). The S1/C15/N12/N1 torsion-angle [-178.27 (19)°] suggests that the thionyl atom S1 is located trans to the azomethane nitrogen atom N1. The closeness of the C13═S1 bond distance [1.665 (3) Å] to the expected distance of a C═S bond (1.60 Å) (Allen et al., 1987; Seena et al., 2008) indicates that the compound exists in the thione form and it is further confirmed by the N1—N2 and N2—C15 bond distances. The hydrazinecarbothioamide moiety, (N1/N2/N3/C15/S1/C16), is nearly planar with a maximum deviation of 0.016 (3) and -0.016 (2) Å for atoms N3 and N2 from its least squares plane value. The three aromatic rings are twisted with a dihedral angle of 86.43 (17) Å between the least squares plane of the rings C1—C6 and C8—C13, 67.99 (19) Å between rings C1—C6 and C16—C21 and 29.77 (16) Å between rings C8—C13 and C16—C21, respectively.
An O2–H2A···N1 intramolecular hydrogen bond (Table 1), is observed which contributes to the planarity of the N1/C14/C11/C10/O2 group with a maximum deivation of 0.146 (2) Å for atom N1. Weak N—H···S, C—H···O and C—H···Cg π-ring intermolecular interactions (Table 1) are also observed.