organic compounds
Methyl N-({[2-(2-methoxyacetamido)-4-(phenylsulfanyl)phenyl]amino}[(methoxycarbonyl)imino]methyl)carbamate
aX-ray Crystallography Unit, School of Physics, Universiti Sains Malaysia, 11800 USM, Penang, Malaysia, bDepartment of Studies in Chemistry, Mangalore University, Mangalagangotri 574 199, India, and cDepartment of Chemistry, P. A. College of Engineering, Nadupadavu, Mangalore 574 153, India
*Correspondence e-mail: hkfun@usm.my
In the title compound, C20H22N4O6S, the phenyl and benzene rings form a dihedral angle of 58.75 (5)°. Intramolecular N—H⋯O and N—H⋯N hydrogen bonds generate two S(6) and one S(7) ring motif, respectively. In the crystal, molecules are linked via N—H⋯O, N—H⋯N, C—H⋯S and C—H⋯O hydrogen bonds, forming two-dimensional networks parallel to the bc plane.
Related literature
For the pharmacological properties of febantel, see: Wollweber et al. (1978); Delatour et al. (1982); Su et al. (2004). For a related structure, see: Yıldırım et al. (2007). For hydrogen-bond motifs, see: Bernstein et al. (1995). For bond-length data, see: Allen et al. (1987).
Experimental
Crystal data
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Refinement
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Data collection: APEX2 (Bruker, 2009); cell SAINT (Bruker, 2009); 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 and PLATON (Spek, 2009).
Supporting information
10.1107/S1600536812002760/rz2701sup1.cif
contains datablocks global, I. DOI:Structure factors: contains datablock I. DOI: 10.1107/S1600536812002760/rz2701Isup2.hkl
Supporting information file. DOI: 10.1107/S1600536812002760/rz2701Isup3.cml
A febantel sample was obtained from CAD Pharma Ltd, Bangalore. Crystals of the title compound were obtained from ethanol by slow evaporation method (m.p. 392–395 K).
Atoms H1N1, H1N2 and H1N4 were located from a difference Fourier map and refined freely [N—H = 0.848 (16)–0.868 (17) Å]. The remaining H atoms were positioned geometrically [C—H = 0.93–0.97 Å] and were refined using a riding model, with Uiso(H) = 1.2 or 1.5Ueq(C). A rotating group model was applied to the methyl groups. One outliner, (011), was omitted in the final refinement.
Data collection: APEX2 (Bruker, 2009); cell
SAINT (Bruker, 2009); data reduction: SAINT (Bruker, 2009); 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) and PLATON (Spek, 2009).Fig. 1. The asymmetric unit of the title compound, showing 30% probability displacement ellipsoids. Intramolecular hydrogen bonds shown by dashed lines. | |
Fig. 2. The crystal packing of the title compound viewed along the a axis. H atoms not involved in intermolecular hydrogen bonds (dashed lines) are omitted. |
C20H22N4O6S | F(000) = 936 |
Mr = 446.48 | Dx = 1.411 Mg m−3 |
Monoclinic, P21/c | Mo Kα radiation, λ = 0.71073 Å |
Hall symbol: -P 2ybc | Cell parameters from 9985 reflections |
a = 10.6975 (7) Å | θ = 2.7–30.1° |
b = 10.6921 (7) Å | µ = 0.20 mm−1 |
c = 18.3732 (13) Å | T = 296 K |
β = 91.068 (1)° | Block, colourless |
V = 2101.1 (2) Å3 | 0.54 × 0.34 × 0.29 mm |
Z = 4 |
Bruker APEXII DUO CCD area-detector diffractometer | 6133 independent reflections |
Radiation source: fine-focus sealed tube | 5455 reflections with I > 2σ(I) |
Graphite monochromator | Rint = 0.023 |
ϕ and ω scans | θmax = 30.1°, θmin = 1.9° |
Absorption correction: multi-scan (SADABS; Bruker, 2009) | h = −15→15 |
Tmin = 0.900, Tmax = 0.945 | k = −14→15 |
22847 measured reflections | l = −25→25 |
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)] = 0.033 | Hydrogen site location: inferred from neighbouring sites |
wR(F2) = 0.097 | H atoms treated by a mixture of independent and constrained refinement |
S = 1.05 | w = 1/[σ2(Fo2) + (0.0543P)2 + 0.5625P] where P = (Fo2 + 2Fc2)/3 |
6133 reflections | (Δ/σ)max = 0.001 |
295 parameters | Δρmax = 0.38 e Å−3 |
0 restraints | Δρmin = −0.35 e Å−3 |
C20H22N4O6S | V = 2101.1 (2) Å3 |
Mr = 446.48 | Z = 4 |
Monoclinic, P21/c | Mo Kα radiation |
a = 10.6975 (7) Å | µ = 0.20 mm−1 |
b = 10.6921 (7) Å | T = 296 K |
c = 18.3732 (13) Å | 0.54 × 0.34 × 0.29 mm |
β = 91.068 (1)° |
Bruker APEXII DUO CCD area-detector diffractometer | 6133 independent reflections |
Absorption correction: multi-scan (SADABS; Bruker, 2009) | 5455 reflections with I > 2σ(I) |
Tmin = 0.900, Tmax = 0.945 | Rint = 0.023 |
22847 measured reflections |
R[F2 > 2σ(F2)] = 0.033 | 0 restraints |
wR(F2) = 0.097 | H atoms treated by a mixture of independent and constrained refinement |
S = 1.05 | Δρmax = 0.38 e Å−3 |
6133 reflections | Δρmin = −0.35 e Å−3 |
295 parameters |
Geometry. All s.u.'s (except the s.u. in the dihedral angle between two l.s. planes) are estimated using the full covariance matrix. The cell s.u.'s are taken into account individually in the estimation of s.u.'s in distances, angles and torsion angles; correlations between s.u.'s in cell parameters are only used when they are defined by crystal symmetry. An approximate (isotropic) treatment of cell s.u.'s is used for estimating s.u.'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 > 2σ(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 | 0.42127 (3) | 0.88419 (2) | 0.249402 (14) | 0.02036 (7) | |
O1 | 0.77450 (7) | 1.22767 (7) | 0.60941 (4) | 0.02052 (16) | |
O2 | 0.91564 (7) | 1.16372 (8) | 0.69502 (4) | 0.02151 (16) | |
O3 | 1.02647 (7) | 0.84660 (8) | 0.59724 (4) | 0.02269 (16) | |
O4 | 0.99201 (7) | 0.71932 (7) | 0.50204 (4) | 0.01985 (15) | |
O5 | 0.42655 (7) | 0.70638 (7) | 0.50505 (4) | 0.01913 (15) | |
O6 | 0.72299 (7) | 0.63922 (7) | 0.58737 (4) | 0.02042 (16) | |
N1 | 0.72953 (7) | 1.04818 (8) | 0.50714 (4) | 0.01405 (15) | |
N2 | 0.88185 (8) | 1.04196 (8) | 0.59968 (5) | 0.01607 (16) | |
N3 | 0.86819 (7) | 0.88433 (8) | 0.50935 (5) | 0.01461 (16) | |
N4 | 0.61754 (8) | 0.80419 (8) | 0.50169 (5) | 0.01422 (16) | |
C1 | 0.59824 (8) | 0.88924 (9) | 0.44371 (5) | 0.01307 (17) | |
C2 | 0.52211 (9) | 0.85788 (9) | 0.38387 (5) | 0.01432 (17) | |
H2A | 0.4786 | 0.7826 | 0.3835 | 0.017* | |
C3 | 0.51118 (9) | 0.93868 (9) | 0.32487 (5) | 0.01544 (18) | |
C4 | 0.57771 (9) | 1.05126 (10) | 0.32423 (5) | 0.01744 (19) | |
H4A | 0.5725 | 1.1040 | 0.2840 | 0.021* | |
C5 | 0.65156 (9) | 1.08331 (9) | 0.38420 (5) | 0.01613 (18) | |
H5A | 0.6949 | 1.1587 | 0.3843 | 0.019* | |
C6 | 0.66180 (8) | 1.00409 (9) | 0.44448 (5) | 0.01342 (17) | |
C7 | 0.82806 (8) | 0.99016 (9) | 0.53816 (5) | 0.01355 (17) | |
C8 | 0.84971 (9) | 1.15290 (10) | 0.63288 (5) | 0.01655 (18) | |
C9 | 0.89359 (11) | 1.27827 (12) | 0.73505 (7) | 0.0272 (2) | |
H9A | 0.9310 | 1.2718 | 0.7828 | 0.041* | |
H9B | 0.8052 | 1.2914 | 0.7392 | 0.041* | |
H9C | 0.9299 | 1.3474 | 0.7097 | 0.041* | |
C10 | 0.96600 (9) | 0.82134 (9) | 0.54164 (5) | 0.01516 (18) | |
C11 | 1.09167 (10) | 0.64191 (10) | 0.53104 (6) | 0.0216 (2) | |
H11A | 1.0989 | 0.5678 | 0.5019 | 0.032* | |
H11B | 1.0735 | 0.6189 | 0.5802 | 0.032* | |
H11C | 1.1689 | 0.6875 | 0.5303 | 0.032* | |
C12 | 0.53768 (9) | 0.71360 (9) | 0.52285 (5) | 0.01480 (17) | |
C13 | 0.59492 (9) | 0.61584 (10) | 0.57286 (6) | 0.0188 (2) | |
H13A | 0.5503 | 0.6150 | 0.6183 | 0.023* | |
H13B | 0.5857 | 0.5340 | 0.5506 | 0.023* | |
C14 | 0.77597 (11) | 0.54161 (11) | 0.63081 (6) | 0.0246 (2) | |
H14A | 0.8636 | 0.5570 | 0.6384 | 0.037* | |
H14B | 0.7646 | 0.4630 | 0.6063 | 0.037* | |
H14C | 0.7353 | 0.5390 | 0.6769 | 0.037* | |
C15 | 0.33882 (9) | 1.01680 (9) | 0.21622 (5) | 0.01638 (18) | |
C16 | 0.29868 (10) | 1.11434 (11) | 0.26040 (6) | 0.0221 (2) | |
H16A | 0.3188 | 1.1147 | 0.3099 | 0.026* | |
C17 | 0.22839 (11) | 1.21108 (11) | 0.22990 (7) | 0.0276 (2) | |
H17A | 0.2022 | 1.2765 | 0.2593 | 0.033* | |
C18 | 0.19673 (10) | 1.21137 (11) | 0.15617 (7) | 0.0252 (2) | |
H18A | 0.1502 | 1.2768 | 0.1362 | 0.030* | |
C19 | 0.23499 (9) | 1.11348 (10) | 0.11272 (6) | 0.0201 (2) | |
H19A | 0.2127 | 1.1124 | 0.0636 | 0.024* | |
C20 | 0.30667 (9) | 1.01637 (10) | 0.14207 (5) | 0.01720 (18) | |
H20A | 0.3331 | 0.9514 | 0.1124 | 0.021* | |
H1N4 | 0.6939 (14) | 0.7947 (14) | 0.5174 (8) | 0.026 (4)* | |
H1N1 | 0.7094 (14) | 1.1187 (15) | 0.5245 (8) | 0.024 (4)* | |
H1N2 | 0.9432 (15) | 0.9972 (16) | 0.6171 (9) | 0.032 (4)* |
U11 | U22 | U33 | U12 | U13 | U23 | |
S1 | 0.03029 (14) | 0.01510 (12) | 0.01531 (13) | −0.00098 (9) | −0.00951 (9) | 0.00060 (9) |
O1 | 0.0204 (3) | 0.0201 (4) | 0.0209 (4) | 0.0025 (3) | −0.0047 (3) | −0.0038 (3) |
O2 | 0.0242 (4) | 0.0229 (4) | 0.0172 (4) | 0.0013 (3) | −0.0074 (3) | −0.0051 (3) |
O3 | 0.0247 (4) | 0.0224 (4) | 0.0206 (4) | 0.0052 (3) | −0.0102 (3) | −0.0019 (3) |
O4 | 0.0179 (3) | 0.0178 (3) | 0.0236 (4) | 0.0047 (3) | −0.0061 (3) | −0.0035 (3) |
O5 | 0.0155 (3) | 0.0220 (4) | 0.0199 (4) | −0.0032 (3) | −0.0014 (3) | 0.0031 (3) |
O6 | 0.0190 (3) | 0.0193 (4) | 0.0227 (4) | −0.0005 (3) | −0.0054 (3) | 0.0077 (3) |
N1 | 0.0145 (3) | 0.0132 (4) | 0.0144 (4) | 0.0004 (3) | −0.0033 (3) | −0.0013 (3) |
N2 | 0.0169 (4) | 0.0161 (4) | 0.0150 (4) | 0.0008 (3) | −0.0050 (3) | −0.0008 (3) |
N3 | 0.0136 (3) | 0.0148 (4) | 0.0153 (4) | 0.0004 (3) | −0.0029 (3) | 0.0000 (3) |
N4 | 0.0137 (3) | 0.0146 (4) | 0.0142 (4) | −0.0011 (3) | −0.0032 (3) | 0.0035 (3) |
C1 | 0.0130 (4) | 0.0134 (4) | 0.0127 (4) | 0.0007 (3) | −0.0009 (3) | 0.0016 (3) |
C2 | 0.0150 (4) | 0.0139 (4) | 0.0140 (4) | −0.0010 (3) | −0.0017 (3) | 0.0003 (3) |
C3 | 0.0174 (4) | 0.0157 (4) | 0.0131 (4) | 0.0002 (3) | −0.0031 (3) | −0.0003 (3) |
C4 | 0.0214 (4) | 0.0167 (4) | 0.0141 (4) | −0.0013 (3) | −0.0031 (3) | 0.0034 (3) |
C5 | 0.0177 (4) | 0.0139 (4) | 0.0167 (4) | −0.0017 (3) | −0.0020 (3) | 0.0015 (3) |
C6 | 0.0127 (4) | 0.0140 (4) | 0.0134 (4) | 0.0008 (3) | −0.0020 (3) | −0.0004 (3) |
C7 | 0.0131 (4) | 0.0145 (4) | 0.0130 (4) | −0.0024 (3) | −0.0011 (3) | 0.0018 (3) |
C8 | 0.0159 (4) | 0.0187 (4) | 0.0150 (4) | −0.0031 (3) | −0.0018 (3) | −0.0013 (4) |
C9 | 0.0285 (5) | 0.0294 (6) | 0.0234 (5) | 0.0021 (4) | −0.0071 (4) | −0.0124 (5) |
C10 | 0.0141 (4) | 0.0151 (4) | 0.0162 (4) | −0.0011 (3) | −0.0011 (3) | 0.0015 (3) |
C11 | 0.0178 (4) | 0.0182 (5) | 0.0287 (6) | 0.0046 (4) | −0.0034 (4) | 0.0016 (4) |
C12 | 0.0178 (4) | 0.0139 (4) | 0.0127 (4) | −0.0013 (3) | −0.0003 (3) | 0.0005 (3) |
C13 | 0.0197 (4) | 0.0176 (5) | 0.0189 (5) | −0.0037 (3) | −0.0035 (3) | 0.0052 (4) |
C14 | 0.0290 (5) | 0.0211 (5) | 0.0236 (5) | 0.0070 (4) | −0.0038 (4) | 0.0050 (4) |
C15 | 0.0159 (4) | 0.0175 (4) | 0.0156 (4) | −0.0018 (3) | −0.0024 (3) | 0.0016 (3) |
C16 | 0.0223 (5) | 0.0263 (5) | 0.0176 (5) | −0.0002 (4) | −0.0012 (4) | −0.0036 (4) |
C17 | 0.0246 (5) | 0.0254 (5) | 0.0328 (6) | 0.0050 (4) | −0.0005 (4) | −0.0077 (5) |
C18 | 0.0192 (5) | 0.0223 (5) | 0.0338 (6) | 0.0023 (4) | −0.0049 (4) | 0.0036 (4) |
C19 | 0.0171 (4) | 0.0236 (5) | 0.0195 (5) | −0.0022 (4) | −0.0049 (3) | 0.0055 (4) |
C20 | 0.0166 (4) | 0.0194 (5) | 0.0156 (4) | −0.0014 (3) | −0.0024 (3) | 0.0004 (4) |
S1—C3 | 1.7712 (10) | C4—C5 | 1.3868 (14) |
S1—C15 | 1.7720 (10) | C4—H4A | 0.9300 |
O1—C8 | 1.2081 (13) | C5—C6 | 1.3971 (13) |
O2—C8 | 1.3357 (12) | C5—H5A | 0.9300 |
O2—C9 | 1.4502 (14) | C9—H9A | 0.9600 |
O3—C10 | 1.2289 (12) | C9—H9B | 0.9600 |
O4—C10 | 1.3433 (12) | C9—H9C | 0.9600 |
O4—C11 | 1.4438 (12) | C11—H11A | 0.9600 |
O5—C12 | 1.2296 (12) | C11—H11B | 0.9600 |
O6—C13 | 1.4132 (12) | C11—H11C | 0.9600 |
O6—C14 | 1.4249 (13) | C12—C13 | 1.5136 (14) |
N1—C7 | 1.3410 (12) | C13—H13A | 0.9700 |
N1—C6 | 1.4288 (12) | C13—H13B | 0.9700 |
N1—H1N1 | 0.848 (16) | C14—H14A | 0.9600 |
N2—C7 | 1.3752 (12) | C14—H14B | 0.9600 |
N2—C8 | 1.3803 (13) | C14—H14C | 0.9600 |
N2—H1N2 | 0.868 (17) | C15—C16 | 1.3943 (15) |
N3—C7 | 1.3241 (12) | C15—C20 | 1.3989 (14) |
N3—C10 | 1.3702 (12) | C16—C17 | 1.3905 (16) |
N4—C12 | 1.3533 (12) | C16—H16A | 0.9300 |
N4—C1 | 1.4129 (12) | C17—C18 | 1.3903 (17) |
N4—H1N4 | 0.867 (15) | C17—H17A | 0.9300 |
C1—C2 | 1.3968 (13) | C18—C19 | 1.3830 (17) |
C1—C6 | 1.4036 (13) | C18—H18A | 0.9300 |
C2—C3 | 1.3894 (13) | C19—C20 | 1.3933 (14) |
C2—H2A | 0.9300 | C19—H19A | 0.9300 |
C3—C4 | 1.3986 (14) | C20—H20A | 0.9300 |
C3—S1—C15 | 105.41 (5) | H9B—C9—H9C | 109.5 |
C8—O2—C9 | 114.73 (9) | O3—C10—O4 | 121.17 (9) |
C10—O4—C11 | 115.12 (8) | O3—C10—N3 | 129.63 (9) |
C13—O6—C14 | 110.50 (8) | O4—C10—N3 | 109.19 (8) |
C7—N1—C6 | 124.93 (8) | O4—C11—H11A | 109.5 |
C7—N1—H1N1 | 117.1 (10) | O4—C11—H11B | 109.5 |
C6—N1—H1N1 | 117.9 (10) | H11A—C11—H11B | 109.5 |
C7—N2—C8 | 127.26 (9) | O4—C11—H11C | 109.5 |
C7—N2—H1N2 | 112.4 (11) | H11A—C11—H11C | 109.5 |
C8—N2—H1N2 | 120.3 (11) | H11B—C11—H11C | 109.5 |
C7—N3—C10 | 119.84 (8) | O5—C12—N4 | 125.52 (9) |
C12—N4—C1 | 126.38 (8) | O5—C12—C13 | 119.76 (9) |
C12—N4—H1N4 | 114.6 (10) | N4—C12—C13 | 114.73 (8) |
C1—N4—H1N4 | 116.7 (10) | O6—C13—C12 | 111.85 (8) |
C2—C1—C6 | 119.55 (9) | O6—C13—H13A | 109.2 |
C2—C1—N4 | 120.92 (8) | C12—C13—H13A | 109.2 |
C6—C1—N4 | 119.44 (8) | O6—C13—H13B | 109.2 |
C3—C2—C1 | 120.28 (9) | C12—C13—H13B | 109.2 |
C3—C2—H2A | 119.9 | H13A—C13—H13B | 107.9 |
C1—C2—H2A | 119.9 | O6—C14—H14A | 109.5 |
C2—C3—C4 | 120.42 (9) | O6—C14—H14B | 109.5 |
C2—C3—S1 | 116.29 (7) | H14A—C14—H14B | 109.5 |
C4—C3—S1 | 123.06 (8) | O6—C14—H14C | 109.5 |
C5—C4—C3 | 119.24 (9) | H14A—C14—H14C | 109.5 |
C5—C4—H4A | 120.4 | H14B—C14—H14C | 109.5 |
C3—C4—H4A | 120.4 | C16—C15—C20 | 119.78 (9) |
C4—C5—C6 | 121.01 (9) | C16—C15—S1 | 123.70 (8) |
C4—C5—H5A | 119.5 | C20—C15—S1 | 116.38 (8) |
C6—C5—H5A | 119.5 | C17—C16—C15 | 119.46 (10) |
C5—C6—C1 | 119.45 (9) | C17—C16—H16A | 120.3 |
C5—C6—N1 | 118.02 (8) | C15—C16—H16A | 120.3 |
C1—C6—N1 | 122.35 (9) | C18—C17—C16 | 120.96 (11) |
N3—C7—N1 | 118.91 (9) | C18—C17—H17A | 119.5 |
N3—C7—N2 | 122.61 (9) | C16—C17—H17A | 119.5 |
N1—C7—N2 | 118.46 (9) | C19—C18—C17 | 119.43 (10) |
O1—C8—O2 | 125.82 (10) | C19—C18—H18A | 120.3 |
O1—C8—N2 | 125.50 (9) | C17—C18—H18A | 120.3 |
O2—C8—N2 | 108.68 (9) | C18—C19—C20 | 120.48 (10) |
O2—C9—H9A | 109.5 | C18—C19—H19A | 119.8 |
O2—C9—H9B | 109.5 | C20—C19—H19A | 119.8 |
H9A—C9—H9B | 109.5 | C19—C20—C15 | 119.87 (10) |
O2—C9—H9C | 109.5 | C19—C20—H20A | 120.1 |
H9A—C9—H9C | 109.5 | C15—C20—H20A | 120.1 |
C12—N4—C1—C2 | −27.56 (14) | C8—N2—C7—N1 | −3.23 (15) |
C12—N4—C1—C6 | 155.89 (9) | C9—O2—C8—O1 | −1.40 (15) |
C6—C1—C2—C3 | 1.22 (14) | C9—O2—C8—N2 | 178.50 (9) |
N4—C1—C2—C3 | −175.32 (9) | C7—N2—C8—O1 | −6.22 (17) |
C1—C2—C3—C4 | 1.01 (15) | C7—N2—C8—O2 | 173.88 (9) |
C1—C2—C3—S1 | 175.56 (7) | C11—O4—C10—O3 | 1.94 (14) |
C15—S1—C3—C2 | 142.14 (8) | C11—O4—C10—N3 | −178.42 (8) |
C15—S1—C3—C4 | −43.47 (10) | C7—N3—C10—O3 | 1.18 (16) |
C2—C3—C4—C5 | −2.11 (15) | C7—N3—C10—O4 | −178.42 (8) |
S1—C3—C4—C5 | −176.27 (8) | C1—N4—C12—O5 | −15.45 (16) |
C3—C4—C5—C6 | 0.98 (15) | C1—N4—C12—C13 | 164.86 (9) |
C4—C5—C6—C1 | 1.23 (14) | C14—O6—C13—C12 | −176.40 (9) |
C4—C5—C6—N1 | −174.02 (9) | O5—C12—C13—O6 | −179.96 (9) |
C2—C1—C6—C5 | −2.32 (14) | N4—C12—C13—O6 | −0.25 (13) |
N4—C1—C6—C5 | 174.27 (9) | C3—S1—C15—C16 | −31.93 (10) |
C2—C1—C6—N1 | 172.71 (8) | C3—S1—C15—C20 | 152.41 (8) |
N4—C1—C6—N1 | −10.69 (13) | C20—C15—C16—C17 | −0.84 (16) |
C7—N1—C6—C5 | −123.35 (10) | S1—C15—C16—C17 | −176.36 (9) |
C7—N1—C6—C1 | 61.54 (13) | C15—C16—C17—C18 | 0.54 (17) |
C10—N3—C7—N1 | −177.78 (8) | C16—C17—C18—C19 | 0.49 (18) |
C10—N3—C7—N2 | 0.88 (14) | C17—C18—C19—C20 | −1.21 (16) |
C6—N1—C7—N3 | 0.55 (14) | C18—C19—C20—C15 | 0.90 (15) |
C6—N1—C7—N2 | −178.17 (8) | C16—C15—C20—C19 | 0.14 (15) |
C8—N2—C7—N3 | 178.10 (9) | S1—C15—C20—C19 | 175.98 (8) |
D—H···A | D—H | H···A | D···A | D—H···A |
N4—H1N4···N3 | 0.867 (15) | 2.104 (15) | 2.8159 (12) | 138.9 (13) |
N1—H1N1···O1 | 0.848 (16) | 2.058 (15) | 2.7224 (11) | 134.7 (13) |
N1—H1N1···O5i | 0.848 (16) | 2.425 (16) | 3.1162 (11) | 139.2 (13) |
N2—H1N2···O3 | 0.869 (16) | 1.879 (17) | 2.6002 (12) | 139.3 (15) |
C9—H9A···O3ii | 0.96 | 2.38 | 3.2652 (15) | 153 |
C13—H13A···S1iii | 0.97 | 2.80 | 3.7678 (11) | 179 |
C14—H14B···O1iv | 0.96 | 2.52 | 3.3796 (14) | 149 |
Symmetry codes: (i) −x+1, −y+2, −z+1; (ii) −x+2, y+1/2, −z+3/2; (iii) x, −y+3/2, z+1/2; (iv) x, y−1, z. |
Experimental details
Crystal data | |
Chemical formula | C20H22N4O6S |
Mr | 446.48 |
Crystal system, space group | Monoclinic, P21/c |
Temperature (K) | 296 |
a, b, c (Å) | 10.6975 (7), 10.6921 (7), 18.3732 (13) |
β (°) | 91.068 (1) |
V (Å3) | 2101.1 (2) |
Z | 4 |
Radiation type | Mo Kα |
µ (mm−1) | 0.20 |
Crystal size (mm) | 0.54 × 0.34 × 0.29 |
Data collection | |
Diffractometer | Bruker APEXII DUO CCD area-detector diffractometer |
Absorption correction | Multi-scan (SADABS; Bruker, 2009) |
Tmin, Tmax | 0.900, 0.945 |
No. of measured, independent and observed [I > 2σ(I)] reflections | 22847, 6133, 5455 |
Rint | 0.023 |
(sin θ/λ)max (Å−1) | 0.705 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.033, 0.097, 1.05 |
No. of reflections | 6133 |
No. of parameters | 295 |
H-atom treatment | H atoms treated by a mixture of independent and constrained refinement |
Δρmax, Δρmin (e Å−3) | 0.38, −0.35 |
Computer programs: APEX2 (Bruker, 2009), SAINT (Bruker, 2009), SHELXTL (Sheldrick, 2008) and PLATON (Spek, 2009).
D—H···A | D—H | H···A | D···A | D—H···A |
N4—H1N4···N3 | 0.867 (15) | 2.104 (15) | 2.8159 (12) | 138.9 (13) |
N1—H1N1···O1 | 0.848 (16) | 2.058 (15) | 2.7224 (11) | 134.7 (13) |
N1—H1N1···O5i | 0.848 (16) | 2.425 (16) | 3.1162 (11) | 139.2 (13) |
N2—H1N2···O3 | 0.869 (16) | 1.879 (17) | 2.6002 (12) | 139.3 (15) |
C9—H9A···O3ii | 0.9600 | 2.3800 | 3.2652 (15) | 153.00 |
C13—H13A···S1iii | 0.9700 | 2.8000 | 3.7678 (11) | 179.00 |
C14—H14B···O1iv | 0.9600 | 2.5200 | 3.3796 (14) | 149.00 |
Symmetry codes: (i) −x+1, −y+2, −z+1; (ii) −x+2, y+1/2, −z+3/2; (iii) x, −y+3/2, z+1/2; (iv) x, y−1, z. |
Footnotes
‡Thomson Reuters ResearcherID: A-3561-2009.
Acknowledgements
HKF and MH thank the Malaysian Government and Universiti Sains Malaysia for Research University grant No. 1001/PFIZIK/811160. MH also thanks Universiti Sains Malaysia for a postdoctoral research fellowship. BN thanks the UGC, India, for financial assistance through SAP and a BSR one-time grant for the purchase of chemicals.
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.
Febantel, N-{2-[2,3-bis-(methoxycarbonyl)-guanido]-5-(phenylthio)-phenyl}-2-methoxy acetamide, is used as an anthelmintic against gastrointestinal parasites in animals (Wollweber et al., 1978; Su et al., 2004). It is a pro-drug, which get converted into an active compound soon after administration (Delatour et al., 1982). The metabolic pathway of febantel is converted directly to either fenbendazole or oxfendazole, which is achieved via febantel sulfoxide as an intermediate.
The molecular structure of the title compound is shown in Fig. 1. Each of the two intramolecular N—H···O hydrogen bonds generates an S(6) ring motif and another intramolecular N—H···N hydrogen bond generates an S(7) ring motif (Bernstein et al., 1995). The dihedral angle between the two benzene rings (C1–C6:C15–C20) is 58.75 (5)°. The bond lengths (Allen et al., 1987) and angles are within normal ranges and are comparable to a related structure (Yıldırım et al., 2007).
In the crystal structure (Fig. 2), molecules are linked via N—H···O, N—H···N, C—H···S and C—H···O (Table 1) hydrogen bonds, forming two-dimensional networks parallel to the bc plane.