organic compounds
(E)-4-[(4-Fluorobenzylidene)amino]-3-[1-(4-isobutylphenyl)ethyl]-1-(morpholinomethyl)-1H-1,2,4-triazole-5(4H)-thione methanol hemisolvate
aX-ray Crystallography Unit, School of Physics, Universiti Sains Malaysia, 11800 USM, Penang, Malaysia, and bDepartment of Studies in Chemistry, Mangalore University, Mangalagangotri, Mangalore 574 199, India
*Correspondence e-mail: hkfun@usm.my
In the title compound, C26H32FN5OS·0.5CH4O, the methyl group of the methanol solvent molecule is disordered over two sites with equal occupancies and the solvent is further disordered about a crystallographic twofold rotation axis. The organic molecule exists in a trans configuration with respect to the acyclic C=N bond. An intramolecular C—H⋯S hydrogen bond generates an S(6) ring motif. The morpholine ring adopts a chair conformation. The essentially planar 1,2,4-triazole ring [maximum deviation = 0.013 (2) Å] forms dihedral angles of 11.21 (10) and 67.53 (11)°, respectively, with the fluorophenyl unit and the isobutyl-substituted benzene ring. The is stabilized by a weak intermolecular C—H⋯π interaction.
Related literature
For general background to and applications of 1,2,4-triazole derivatives, see: Calhoun et al. (1995); Pandeya et al. (1999, 2000); Sujith et al. (2009). For graph-set descriptions of hydrogen-bond motifs, see: Bernstein et al. (1995). For closely related structures, see: Goh et al. (2010a,b). For the stability of the temperature controller used for the data collection, see: Cosier & Glazer (1986).
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
https://doi.org/10.1107/S1600536810015217/lh5026sup1.cif
contains datablocks global, I. DOI:Structure factors: contains datablock I. DOI: https://doi.org/10.1107/S1600536810015217/lh5026Isup2.hkl
A mixture of Schiff base (0.01 mol) and formaldehyde (40 %, 2 ml) in ethanol (15 ml) was taken to this solution morpholine (0.01 mol) was added. The reaction mixture was stirred at room temperature for two days. The solid product obtained was collected by filtration, washed with ethanol and dried. Colourless single crystals suitable for X-ray analysis were obtained from a 1:2 mixture of N,N-dimethylformamide and methanol by slow evaporation.
All hydrogen atoms were placed in their calculated positions, with C—H = 0.93 – 0.98 Å, and refined using a riding model with Uiso = 1.2 or 1.5 Ueq(C). A rotating group model was used for the C19, C20 and C21 methyl groups. The methanol solvent molecule is refined with a fixed occupancy of 0.5. The atom C27 of methanol solvent molecule is disordered over two positions with an equal occupancy of 0.25. Both the disordered components are further disordered over a crystallography two-fold rotation. A short intermolecular H15A···H27E interactions [2.04 Å] is also observed.
Non-steroidal anti-inflammatory drugs (NSAIDs) are widely used. Despite their large therapeutic applications, they have several undesired, often serious side effects (Calhoun et al., 1995). Therefore, long term administration is not advisable. The need for new anti-inflammatory drugs is obvious and accordingly, there have been renewed interest in anti-inflammatory agents endowed with potent biological activity. In this context, it has been shown that some Mannich bases find applications as anti-inflammatory, analgesic agents (Sujith et al., 2009) and anti-microbial properties (Pandeya et al., 1999, 2000).
The ═N1 double bond [bond length of C7═N1 = 1.276 (2) Å and torsion angle of C6–C7–N1–N2 of 176.41 (16)°]. An intramolecular C7—H7A···S1 hydrogen bond generates a six-membered ring, producing an S(6) ring motif (Bernstein et al., 1995). The morpholino unit adopts a chair conformation, with puckering parameters of Q = 0.580 (2) Å, θ = 178.2 (2)° and φ = 126 (6)°. The 1,2,4-triazole ring (N2/C8/N3/N4/C9) is essentially planar, with maximum deviation of -0.013 (2) Å for atom N2. The 1,2,4-triazole ring is inclined at dihedral angles of 11.21 (10) and 67.53 (11)°, respectively, with fluorophenyl group (C1-C6/F1) and isobutyl-substituted benzene ring (C11-C16). The bond lengths and angles are consistent to those observed in closely related structures (Goh et al., 2010a,b).
of the title 1,2,4-triazole compound (Fig. 1) comprises of a (E)-4-[(4-fluorobenzylidene)amino]-3-[1-(4-isobutylphenyl)ethyl] -1-(morpholinomethyl)-1H-1,2,4-triazole-5(4H)-thione molecule and a methanol molecule of crystallization, which is partially occupied with a fixed occupancy of 0.5. The atom C27 of the methanol solvent molecule is disordered over two sites with an equal occupancy of 0.25. Both the disordered components are further disordered over a crystallographic two-fold rotation [symmetry code to generate equivalent atoms: -x, y, -z + 1/2]. The main molecule exists in an E configuration with respect to the acyclic C7In the
no significant intermolecular hydrogen bonds are observed. The is stabilized by a weak intermolecular C22—H22A···Cg1 interactions (Table 1) involving the 1,2,4-triazole ring.For general background to and applications of 1,2,4-triazole derivatives, see: Calhoun et al. (1995); Pandeya et al. (1999, 2000); Sujith et al. (2009). For graph-set descriptions of hydrogen-bond motifs, see : Bernstein et al. (1995). For closely related structures, see: Goh et al. (2010a,b). For the stability of the temperature controller used for the data collection, see: Cosier & Glazer (1986).
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).C26H32FN5OS·0.5CH4O | F(000) = 2120 |
Mr = 497.65 | Dx = 1.273 Mg m−3 |
Monoclinic, C2/c | Mo Kα radiation, λ = 0.71073 Å |
Hall symbol: -C 2yc | Cell parameters from 4090 reflections |
a = 40.186 (3) Å | θ = 2.3–29.3° |
b = 4.7840 (3) Å | µ = 0.16 mm−1 |
c = 30.073 (2) Å | T = 100 K |
β = 116.112 (2)° | Plate, colourless |
V = 5191.5 (6) Å3 | 0.31 × 0.16 × 0.06 mm |
Z = 8 |
Bruker APEXII DUO CCD area-detector diffractometer | 5921 independent reflections |
Radiation source: fine-focus sealed tube | 4378 reflections with I > 2σ(I) |
Graphite monochromator | Rint = 0.056 |
φ and ω scans | θmax = 27.5°, θmin = 1.1° |
Absorption correction: multi-scan (SADABS; Bruker, 2009) | h = −45→52 |
Tmin = 0.951, Tmax = 0.990 | k = −6→6 |
24705 measured reflections | l = −39→36 |
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)] = 0.048 | Hydrogen site location: inferred from neighbouring sites |
wR(F2) = 0.149 | H-atom parameters constrained |
S = 1.04 | w = 1/[σ2(Fo2) + (0.0761P)2 + 4.918P] where P = (Fo2 + 2Fc2)/3 |
5921 reflections | (Δ/σ)max < 0.001 |
337 parameters | Δρmax = 0.63 e Å−3 |
0 restraints | Δρmin = −0.22 e Å−3 |
C26H32FN5OS·0.5CH4O | V = 5191.5 (6) Å3 |
Mr = 497.65 | Z = 8 |
Monoclinic, C2/c | Mo Kα radiation |
a = 40.186 (3) Å | µ = 0.16 mm−1 |
b = 4.7840 (3) Å | T = 100 K |
c = 30.073 (2) Å | 0.31 × 0.16 × 0.06 mm |
β = 116.112 (2)° |
Bruker APEXII DUO CCD area-detector diffractometer | 5921 independent reflections |
Absorption correction: multi-scan (SADABS; Bruker, 2009) | 4378 reflections with I > 2σ(I) |
Tmin = 0.951, Tmax = 0.990 | Rint = 0.056 |
24705 measured reflections |
R[F2 > 2σ(F2)] = 0.048 | 0 restraints |
wR(F2) = 0.149 | H-atom parameters constrained |
S = 1.04 | Δρmax = 0.63 e Å−3 |
5921 reflections | Δρmin = −0.22 e Å−3 |
337 parameters |
Experimental. The crystal was placed in the cold stream of an Oxford Cryosystems Cobra open-flow nitrogen cryostat (Cosier & Glazer, 1986) operating at 100.0 (1)K. |
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. |
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 > 2sigma(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 | Occ. (<1) | |
S1 | 0.088287 (13) | 0.32232 (11) | 0.024927 (18) | 0.02279 (15) | |
F1 | −0.03130 (3) | 1.5045 (3) | 0.10905 (5) | 0.0353 (3) | |
O1 | 0.25668 (4) | 0.2919 (3) | 0.07215 (6) | 0.0265 (3) | |
N1 | 0.09867 (4) | 0.7033 (3) | 0.12673 (6) | 0.0176 (3) | |
N2 | 0.12134 (4) | 0.4899 (3) | 0.12369 (6) | 0.0161 (3) | |
N3 | 0.15083 (4) | 0.1724 (3) | 0.10553 (6) | 0.0172 (3) | |
N4 | 0.17235 (4) | 0.2366 (4) | 0.15492 (6) | 0.0188 (4) | |
N5 | 0.19454 (4) | 0.0176 (3) | 0.07277 (6) | 0.0174 (3) | |
C1 | 0.05201 (5) | 1.1031 (4) | 0.14003 (8) | 0.0219 (4) | |
H1A | 0.0759 | 1.0874 | 0.1654 | 0.026* | |
C2 | 0.02764 (6) | 1.2953 (5) | 0.14380 (8) | 0.0252 (4) | |
H2A | 0.0347 | 1.4080 | 0.1717 | 0.030* | |
C3 | −0.00756 (6) | 1.3156 (4) | 0.10502 (8) | 0.0247 (4) | |
C4 | −0.01956 (6) | 1.1530 (4) | 0.06315 (8) | 0.0242 (4) | |
H4A | −0.0433 | 1.1730 | 0.0376 | 0.029* | |
C5 | 0.00502 (5) | 0.9582 (5) | 0.06043 (8) | 0.0228 (4) | |
H5A | −0.0026 | 0.8424 | 0.0328 | 0.027* | |
C6 | 0.04086 (5) | 0.9323 (4) | 0.09816 (7) | 0.0187 (4) | |
C7 | 0.06528 (5) | 0.7189 (4) | 0.09341 (7) | 0.0201 (4) | |
H7A | 0.0566 | 0.5971 | 0.0666 | 0.024* | |
C8 | 0.11940 (5) | 0.3259 (4) | 0.08433 (7) | 0.0172 (4) | |
C9 | 0.15399 (5) | 0.4326 (4) | 0.16470 (7) | 0.0170 (4) | |
C10 | 0.16652 (5) | 0.5789 (4) | 0.21346 (7) | 0.0176 (4) | |
H10A | 0.1552 | 0.7650 | 0.2069 | 0.021* | |
C11 | 0.15292 (5) | 0.4252 (4) | 0.24672 (7) | 0.0189 (4) | |
C12 | 0.17420 (6) | 0.2223 (5) | 0.28014 (8) | 0.0248 (4) | |
H12A | 0.1974 | 0.1772 | 0.2824 | 0.030* | |
C13 | 0.16132 (7) | 0.0854 (5) | 0.31034 (8) | 0.0299 (5) | |
H13A | 0.1762 | −0.0478 | 0.3328 | 0.036* | |
C14 | 0.12667 (6) | 0.1438 (4) | 0.30763 (7) | 0.0244 (5) | |
C15 | 0.10542 (6) | 0.3483 (5) | 0.27433 (7) | 0.0253 (5) | |
H15A | 0.0822 | 0.3929 | 0.2720 | 0.030* | |
C16 | 0.11845 (5) | 0.4869 (5) | 0.24448 (7) | 0.0230 (4) | |
H16A | 0.1038 | 0.6235 | 0.2226 | 0.028* | |
C17 | 0.11276 (7) | −0.0019 (5) | 0.34084 (8) | 0.0287 (5) | |
H17A | 0.1268 | −0.1728 | 0.3532 | 0.034* | |
H17B | 0.0871 | −0.0539 | 0.3212 | 0.034* | |
C18 | 0.11550 (6) | 0.1720 (5) | 0.38489 (7) | 0.0233 (4) | |
H18A | 0.1010 | 0.3432 | 0.3721 | 0.028* | |
C19 | 0.09868 (7) | 0.0110 (5) | 0.41376 (9) | 0.0335 (5) | |
H19A | 0.0736 | −0.0387 | 0.3920 | 0.050* | |
H19B | 0.0990 | 0.1258 | 0.4401 | 0.050* | |
H19C | 0.1129 | −0.1556 | 0.4273 | 0.050* | |
C20 | 0.15534 (6) | 0.2551 (6) | 0.41852 (8) | 0.0357 (6) | |
H20A | 0.1647 | 0.3705 | 0.4004 | 0.054* | |
H20B | 0.1703 | 0.0901 | 0.4299 | 0.054* | |
H20C | 0.1561 | 0.3570 | 0.4465 | 0.054* | |
C21 | 0.20863 (5) | 0.6187 (5) | 0.23668 (8) | 0.0245 (5) | |
H21A | 0.2149 | 0.7449 | 0.2167 | 0.037* | |
H21B | 0.2204 | 0.4415 | 0.2385 | 0.037* | |
H21C | 0.2170 | 0.6945 | 0.2694 | 0.037* | |
C22 | 0.16324 (5) | −0.0479 (4) | 0.08182 (7) | 0.0190 (4) | |
H22A | 0.1692 | −0.2133 | 0.1026 | 0.023* | |
H22B | 0.1426 | −0.0954 | 0.0504 | 0.023* | |
C23 | 0.18987 (6) | 0.2658 (4) | 0.04242 (8) | 0.0224 (4) | |
H23A | 0.1892 | 0.4312 | 0.0606 | 0.027* | |
H23B | 0.1666 | 0.2543 | 0.0126 | 0.027* | |
C24 | 0.22178 (6) | 0.2869 (5) | 0.02871 (8) | 0.0279 (5) | |
H24A | 0.2211 | 0.1285 | 0.0082 | 0.033* | |
H24B | 0.2192 | 0.4559 | 0.0096 | 0.033* | |
C25 | 0.26073 (5) | 0.0439 (5) | 0.10014 (8) | 0.0249 (5) | |
H25A | 0.2846 | 0.0452 | 0.1290 | 0.030* | |
H25B | 0.2599 | −0.1176 | 0.0802 | 0.030* | |
C26 | 0.23025 (5) | 0.0222 (5) | 0.11653 (8) | 0.0230 (4) | |
H26A | 0.2333 | −0.1472 | 0.1357 | 0.028* | |
H26B | 0.2314 | 0.1807 | 0.1373 | 0.028* | |
O2 | 0.00036 (14) | 0.8833 (15) | 0.27352 (18) | 0.091 (2) | 0.50 |
H2OA | −0.0207 | 0.8835 | 0.2737 | 0.136* | 0.25 |
H2OB | −0.0184 | 0.8489 | 0.2463 | 0.136* | 0.25 |
C27A | 0.0135 (4) | 1.187 (3) | 0.2744 (6) | 0.068 (4) | 0.25 |
H27A | −0.0076 | 1.3084 | 0.2593 | 0.102* | 0.25 |
H27B | 0.0281 | 1.2435 | 0.3082 | 0.102* | 0.25 |
H27C | 0.0282 | 1.1993 | 0.2566 | 0.102* | 0.25 |
C27B | 0.0229 (3) | 0.616 (2) | 0.2923 (4) | 0.039 (2) | 0.25 |
H27D | 0.0065 | 0.4596 | 0.2860 | 0.059* | 0.25 |
H27E | 0.0383 | 0.5891 | 0.2757 | 0.059* | 0.25 |
H27F | 0.0382 | 0.6333 | 0.3272 | 0.059* | 0.25 |
U11 | U22 | U33 | U12 | U13 | U23 | |
S1 | 0.0194 (3) | 0.0310 (3) | 0.0140 (2) | 0.0030 (2) | 0.00371 (19) | −0.00443 (19) |
F1 | 0.0279 (7) | 0.0307 (7) | 0.0483 (8) | 0.0099 (5) | 0.0178 (6) | −0.0043 (6) |
O1 | 0.0207 (7) | 0.0301 (8) | 0.0299 (8) | −0.0040 (6) | 0.0123 (6) | 0.0000 (6) |
N1 | 0.0165 (8) | 0.0198 (8) | 0.0174 (8) | 0.0025 (6) | 0.0083 (6) | −0.0002 (6) |
N2 | 0.0150 (7) | 0.0198 (8) | 0.0132 (7) | 0.0009 (6) | 0.0059 (6) | −0.0014 (6) |
N3 | 0.0156 (8) | 0.0230 (8) | 0.0142 (8) | 0.0007 (6) | 0.0075 (6) | −0.0014 (6) |
N4 | 0.0177 (8) | 0.0250 (9) | 0.0142 (8) | −0.0004 (6) | 0.0075 (6) | 0.0005 (6) |
N5 | 0.0161 (8) | 0.0208 (8) | 0.0159 (8) | 0.0013 (6) | 0.0075 (6) | 0.0009 (6) |
C1 | 0.0187 (9) | 0.0219 (10) | 0.0233 (10) | −0.0005 (8) | 0.0075 (8) | −0.0008 (8) |
C2 | 0.0254 (11) | 0.0245 (10) | 0.0260 (11) | −0.0019 (8) | 0.0115 (9) | −0.0062 (8) |
C3 | 0.0215 (10) | 0.0218 (10) | 0.0345 (12) | 0.0057 (8) | 0.0157 (9) | 0.0018 (9) |
C4 | 0.0179 (9) | 0.0293 (11) | 0.0231 (10) | 0.0031 (8) | 0.0068 (8) | 0.0049 (8) |
C5 | 0.0204 (10) | 0.0277 (11) | 0.0192 (10) | 0.0008 (8) | 0.0078 (8) | −0.0004 (8) |
C6 | 0.0172 (9) | 0.0206 (9) | 0.0187 (9) | 0.0018 (7) | 0.0085 (8) | 0.0025 (7) |
C7 | 0.0177 (9) | 0.0246 (10) | 0.0176 (9) | −0.0003 (8) | 0.0075 (8) | −0.0021 (8) |
C8 | 0.0169 (9) | 0.0190 (9) | 0.0177 (9) | −0.0012 (7) | 0.0095 (7) | −0.0011 (7) |
C9 | 0.0149 (9) | 0.0220 (9) | 0.0145 (9) | −0.0005 (7) | 0.0070 (7) | 0.0028 (7) |
C10 | 0.0168 (9) | 0.0208 (9) | 0.0139 (9) | 0.0007 (7) | 0.0056 (7) | −0.0001 (7) |
C11 | 0.0218 (10) | 0.0217 (9) | 0.0129 (9) | −0.0031 (8) | 0.0074 (7) | −0.0045 (7) |
C12 | 0.0277 (11) | 0.0263 (11) | 0.0235 (10) | 0.0067 (8) | 0.0140 (9) | 0.0010 (8) |
C13 | 0.0408 (13) | 0.0260 (11) | 0.0250 (11) | 0.0077 (10) | 0.0165 (10) | 0.0055 (9) |
C14 | 0.0328 (11) | 0.0226 (10) | 0.0187 (10) | −0.0064 (8) | 0.0121 (9) | −0.0048 (8) |
C15 | 0.0216 (10) | 0.0357 (12) | 0.0186 (10) | −0.0042 (9) | 0.0089 (8) | −0.0011 (9) |
C16 | 0.0189 (9) | 0.0312 (11) | 0.0154 (9) | −0.0011 (8) | 0.0044 (8) | 0.0009 (8) |
C17 | 0.0397 (13) | 0.0253 (11) | 0.0251 (11) | −0.0080 (9) | 0.0179 (10) | −0.0020 (9) |
C18 | 0.0251 (10) | 0.0274 (11) | 0.0192 (10) | −0.0006 (8) | 0.0113 (8) | 0.0010 (8) |
C19 | 0.0372 (13) | 0.0399 (13) | 0.0294 (12) | −0.0025 (10) | 0.0200 (10) | 0.0032 (10) |
C20 | 0.0314 (12) | 0.0520 (16) | 0.0233 (11) | −0.0063 (11) | 0.0117 (10) | −0.0046 (10) |
C21 | 0.0172 (10) | 0.0330 (12) | 0.0207 (10) | −0.0027 (8) | 0.0059 (8) | −0.0017 (8) |
C22 | 0.0194 (9) | 0.0194 (9) | 0.0195 (9) | −0.0007 (7) | 0.0096 (8) | −0.0033 (7) |
C23 | 0.0211 (10) | 0.0268 (11) | 0.0211 (10) | 0.0020 (8) | 0.0108 (8) | 0.0040 (8) |
C24 | 0.0252 (11) | 0.0366 (12) | 0.0249 (11) | −0.0015 (9) | 0.0139 (9) | 0.0040 (9) |
C25 | 0.0179 (10) | 0.0286 (11) | 0.0272 (11) | 0.0010 (8) | 0.0092 (8) | −0.0008 (9) |
C26 | 0.0172 (9) | 0.0282 (11) | 0.0222 (10) | 0.0011 (8) | 0.0073 (8) | 0.0025 (8) |
O2 | 0.056 (3) | 0.165 (6) | 0.056 (3) | −0.004 (4) | 0.031 (3) | 0.012 (3) |
C27A | 0.056 (8) | 0.060 (8) | 0.092 (11) | −0.010 (6) | 0.037 (7) | −0.019 (7) |
C27B | 0.038 (5) | 0.057 (7) | 0.030 (5) | −0.009 (5) | 0.021 (4) | 0.003 (5) |
S1—C8 | 1.6699 (19) | C16—H16A | 0.9300 |
F1—C3 | 1.358 (2) | C17—C18 | 1.527 (3) |
O1—C25 | 1.422 (3) | C17—H17A | 0.9700 |
O1—C24 | 1.436 (3) | C17—H17B | 0.9700 |
N1—C7 | 1.276 (2) | C18—C20 | 1.523 (3) |
N1—N2 | 1.398 (2) | C18—C19 | 1.523 (3) |
N2—C9 | 1.376 (2) | C18—H18A | 0.9800 |
N2—C8 | 1.393 (2) | C19—H19A | 0.9600 |
N3—C8 | 1.354 (2) | C19—H19B | 0.9600 |
N3—N4 | 1.385 (2) | C19—H19C | 0.9600 |
N3—C22 | 1.477 (2) | C20—H20A | 0.9600 |
N4—C9 | 1.304 (3) | C20—H20B | 0.9600 |
N5—C22 | 1.434 (2) | C20—H20C | 0.9600 |
N5—C23 | 1.458 (3) | C21—H21A | 0.9600 |
N5—C26 | 1.459 (2) | C21—H21B | 0.9600 |
C1—C2 | 1.384 (3) | C21—H21C | 0.9600 |
C1—C6 | 1.399 (3) | C22—H22A | 0.9700 |
C1—H1A | 0.9300 | C22—H22B | 0.9700 |
C2—C3 | 1.385 (3) | C23—C24 | 1.513 (3) |
C2—H2A | 0.9300 | C23—H23A | 0.9700 |
C3—C4 | 1.374 (3) | C23—H23B | 0.9700 |
C4—C5 | 1.387 (3) | C24—H24A | 0.9700 |
C4—H4A | 0.9300 | C24—H24B | 0.9700 |
C5—C6 | 1.392 (3) | C25—C26 | 1.512 (3) |
C5—H5A | 0.9300 | C25—H25A | 0.9700 |
C6—C7 | 1.466 (3) | C25—H25B | 0.9700 |
C7—H7A | 0.9300 | C26—H26A | 0.9700 |
C9—C10 | 1.498 (3) | C26—H26B | 0.9700 |
C10—C11 | 1.524 (3) | O2—O2i | 1.402 (10) |
C10—C21 | 1.532 (3) | O2—C27B | 1.522 (13) |
C10—H10A | 0.9800 | O2—C27A | 1.543 (15) |
C11—C12 | 1.388 (3) | O2—H2OA | 0.8503 |
C11—C16 | 1.389 (3) | O2—H2OB | 0.8499 |
C12—C13 | 1.391 (3) | C27A—C27Ai | 1.39 (3) |
C12—H12A | 0.9300 | C27A—H27A | 0.9600 |
C13—C14 | 1.387 (3) | C27A—H27B | 0.9600 |
C13—H13A | 0.9300 | C27A—H27C | 0.9602 |
C14—C15 | 1.392 (3) | C27B—H27D | 0.9600 |
C14—C17 | 1.513 (3) | C27B—H27E | 0.9602 |
C15—C16 | 1.390 (3) | C27B—H27F | 0.9601 |
C15—H15A | 0.9300 | ||
C25—O1—C24 | 109.65 (16) | C18—C19—H19A | 109.5 |
C7—N1—N2 | 118.83 (16) | C18—C19—H19B | 109.5 |
C9—N2—C8 | 108.91 (15) | H19A—C19—H19B | 109.5 |
C9—N2—N1 | 118.60 (15) | C18—C19—H19C | 109.5 |
C8—N2—N1 | 132.25 (15) | H19A—C19—H19C | 109.5 |
C8—N3—N4 | 113.44 (15) | H19B—C19—H19C | 109.5 |
C8—N3—C22 | 127.08 (16) | C18—C20—H20A | 109.5 |
N4—N3—C22 | 119.48 (15) | C18—C20—H20B | 109.5 |
C9—N4—N3 | 104.66 (15) | H20A—C20—H20B | 109.5 |
C22—N5—C23 | 114.50 (15) | C18—C20—H20C | 109.5 |
C22—N5—C26 | 115.40 (16) | H20A—C20—H20C | 109.5 |
C23—N5—C26 | 110.90 (16) | H20B—C20—H20C | 109.5 |
C2—C1—C6 | 120.26 (18) | C10—C21—H21A | 109.5 |
C2—C1—H1A | 119.9 | C10—C21—H21B | 109.5 |
C6—C1—H1A | 119.9 | H21A—C21—H21B | 109.5 |
C1—C2—C3 | 118.35 (19) | C10—C21—H21C | 109.5 |
C1—C2—H2A | 120.8 | H21A—C21—H21C | 109.5 |
C3—C2—H2A | 120.8 | H21B—C21—H21C | 109.5 |
F1—C3—C4 | 118.77 (19) | N5—C22—N3 | 116.51 (16) |
F1—C3—C2 | 117.96 (19) | N5—C22—H22A | 108.2 |
C4—C3—C2 | 123.26 (19) | N3—C22—H22A | 108.2 |
C3—C4—C5 | 117.56 (19) | N5—C22—H22B | 108.2 |
C3—C4—H4A | 121.2 | N3—C22—H22B | 108.2 |
C5—C4—H4A | 121.2 | H22A—C22—H22B | 107.3 |
C4—C5—C6 | 121.33 (19) | N5—C23—C24 | 109.50 (17) |
C4—C5—H5A | 119.3 | N5—C23—H23A | 109.8 |
C6—C5—H5A | 119.3 | C24—C23—H23A | 109.8 |
C5—C6—C1 | 119.22 (18) | N5—C23—H23B | 109.8 |
C5—C6—C7 | 118.64 (18) | C24—C23—H23B | 109.8 |
C1—C6—C7 | 122.11 (17) | H23A—C23—H23B | 108.2 |
N1—C7—C6 | 118.84 (18) | O1—C24—C23 | 111.04 (17) |
N1—C7—H7A | 120.6 | O1—C24—H24A | 109.4 |
C6—C7—H7A | 120.6 | C23—C24—H24A | 109.4 |
N3—C8—N2 | 102.32 (15) | O1—C24—H24B | 109.4 |
N3—C8—S1 | 127.05 (15) | C23—C24—H24B | 109.4 |
N2—C8—S1 | 130.55 (14) | H24A—C24—H24B | 108.0 |
N4—C9—N2 | 110.62 (16) | O1—C25—C26 | 110.62 (17) |
N4—C9—C10 | 125.22 (17) | O1—C25—H25A | 109.5 |
N2—C9—C10 | 124.16 (17) | C26—C25—H25A | 109.5 |
C9—C10—C11 | 110.73 (16) | O1—C25—H25B | 109.5 |
C9—C10—C21 | 109.42 (16) | C26—C25—H25B | 109.5 |
C11—C10—C21 | 113.83 (16) | H25A—C25—H25B | 108.1 |
C9—C10—H10A | 107.5 | N5—C26—C25 | 108.87 (17) |
C11—C10—H10A | 107.5 | N5—C26—H26A | 109.9 |
C21—C10—H10A | 107.5 | C25—C26—H26A | 109.9 |
C12—C11—C16 | 117.86 (19) | N5—C26—H26B | 109.9 |
C12—C11—C10 | 121.88 (18) | C25—C26—H26B | 109.9 |
C16—C11—C10 | 120.27 (18) | H26A—C26—H26B | 108.3 |
C11—C12—C13 | 120.9 (2) | O2i—O2—C27B | 96.8 (5) |
C11—C12—H12A | 119.5 | O2i—O2—C27A | 82.7 (6) |
C13—C12—H12A | 119.5 | C27B—O2—C27A | 129.9 (7) |
C14—C13—C12 | 121.3 (2) | O2i—O2—H2OA | 115.4 |
C14—C13—H13A | 119.4 | C27B—O2—H2OA | 115.5 |
C12—C13—H13A | 119.4 | C27A—O2—H2OA | 109.4 |
C13—C14—C15 | 117.8 (2) | O2i—O2—H2OB | 54.0 |
C13—C14—C17 | 121.4 (2) | C27B—O2—H2OB | 108.9 |
C15—C14—C17 | 120.7 (2) | C27A—O2—H2OB | 110.6 |
C16—C15—C14 | 120.9 (2) | H2OA—O2—H2OB | 62.8 |
C16—C15—H15A | 119.5 | C27Ai—C27A—O2 | 83.1 (7) |
C14—C15—H15A | 119.5 | C27Ai—C27A—H27A | 52.0 |
C11—C16—C15 | 121.21 (19) | O2—C27A—H27A | 109.7 |
C11—C16—H16A | 119.4 | C27Ai—C27A—H27B | 161.2 |
C15—C16—H16A | 119.4 | O2—C27A—H27B | 109.1 |
C14—C17—C18 | 114.54 (18) | H27A—C27A—H27B | 109.5 |
C14—C17—H17A | 108.6 | C27Ai—C27A—H27C | 78.2 |
C18—C17—H17A | 108.6 | O2—C27A—H27C | 109.6 |
C14—C17—H17B | 108.6 | H27A—C27A—H27C | 109.5 |
C18—C17—H17B | 108.6 | H27B—C27A—H27C | 109.5 |
H17A—C17—H17B | 107.6 | O2—C27B—H27D | 109.8 |
C20—C18—C19 | 110.73 (18) | O2—C27B—H27E | 109.7 |
C20—C18—C17 | 111.82 (18) | H27D—C27B—H27E | 109.5 |
C19—C18—C17 | 109.78 (18) | O2—C27B—H27F | 108.9 |
C20—C18—H18A | 108.1 | H27D—C27B—H27F | 109.5 |
C19—C18—H18A | 108.1 | H27E—C27B—H27F | 109.4 |
C17—C18—H18A | 108.1 | ||
C7—N1—N2—C9 | −165.16 (18) | N2—C9—C10—C21 | −143.00 (19) |
C7—N1—N2—C8 | 21.2 (3) | C9—C10—C11—C12 | 92.1 (2) |
C8—N3—N4—C9 | 0.2 (2) | C21—C10—C11—C12 | −31.6 (3) |
C22—N3—N4—C9 | −179.21 (16) | C9—C10—C11—C16 | −88.2 (2) |
C6—C1—C2—C3 | −0.8 (3) | C21—C10—C11—C16 | 148.00 (19) |
C1—C2—C3—F1 | 179.92 (19) | C16—C11—C12—C13 | 0.1 (3) |
C1—C2—C3—C4 | 0.5 (3) | C10—C11—C12—C13 | 179.68 (19) |
F1—C3—C4—C5 | −178.78 (19) | C11—C12—C13—C14 | 0.9 (3) |
C2—C3—C4—C5 | 0.7 (3) | C12—C13—C14—C15 | −1.3 (3) |
C3—C4—C5—C6 | −1.5 (3) | C12—C13—C14—C17 | −179.2 (2) |
C4—C5—C6—C1 | 1.2 (3) | C13—C14—C15—C16 | 0.6 (3) |
C4—C5—C6—C7 | 178.98 (19) | C17—C14—C15—C16 | 178.64 (19) |
C2—C1—C6—C5 | 0.0 (3) | C12—C11—C16—C15 | −0.7 (3) |
C2—C1—C6—C7 | −177.7 (2) | C10—C11—C16—C15 | 179.70 (18) |
N2—N1—C7—C6 | 176.41 (16) | C14—C15—C16—C11 | 0.3 (3) |
C5—C6—C7—N1 | 176.71 (19) | C13—C14—C17—C18 | 101.5 (2) |
C1—C6—C7—N1 | −5.5 (3) | C15—C14—C17—C18 | −76.4 (3) |
N4—N3—C8—N2 | −1.5 (2) | C14—C17—C18—C20 | −60.0 (3) |
C22—N3—C8—N2 | 177.79 (17) | C14—C17—C18—C19 | 176.70 (19) |
N4—N3—C8—S1 | 175.59 (14) | C23—N5—C22—N3 | −57.1 (2) |
C22—N3—C8—S1 | −5.1 (3) | C26—N5—C22—N3 | 73.4 (2) |
C9—N2—C8—N3 | 2.3 (2) | C8—N3—C22—N5 | 109.5 (2) |
N1—N2—C8—N3 | 176.42 (18) | N4—N3—C22—N5 | −71.3 (2) |
C9—N2—C8—S1 | −174.70 (16) | C22—N5—C23—C24 | −171.03 (17) |
N1—N2—C8—S1 | −0.6 (3) | C26—N5—C23—C24 | 56.2 (2) |
N3—N4—C9—N2 | 1.3 (2) | C25—O1—C24—C23 | 59.4 (2) |
N3—N4—C9—C10 | −178.07 (17) | N5—C23—C24—O1 | −56.9 (2) |
C8—N2—C9—N4 | −2.4 (2) | C24—O1—C25—C26 | −60.8 (2) |
N1—N2—C9—N4 | −177.45 (16) | C22—N5—C26—C25 | 170.28 (17) |
C8—N2—C9—C10 | 177.03 (17) | C23—N5—C26—C25 | −57.4 (2) |
N1—N2—C9—C10 | 2.0 (3) | O1—C25—C26—N5 | 59.8 (2) |
N4—C9—C10—C11 | −89.9 (2) | O2i—O2—C27A—C27Ai | 41.1 (11) |
N2—C9—C10—C11 | 90.7 (2) | C27B—O2—C27A—C27Ai | 133.9 (10) |
N4—C9—C10—C21 | 36.3 (3) |
Symmetry code: (i) −x, y, −z+1/2. |
Cg1 is the centroid of the 1,2,4-triazole ring (N2/C8/N3/N4/C9). |
D—H···A | D—H | H···A | D···A | D—H···A |
C7—H7A···S1 | 0.93 | 2.51 | 3.221 (2) | 133 |
C22—H22A···Cg1ii | 0.97 | 2.64 | 3.492 (2) | 146 |
Symmetry code: (ii) x, y−1, z. |
Experimental details
Crystal data | |
Chemical formula | C26H32FN5OS·0.5CH4O |
Mr | 497.65 |
Crystal system, space group | Monoclinic, C2/c |
Temperature (K) | 100 |
a, b, c (Å) | 40.186 (3), 4.7840 (3), 30.073 (2) |
β (°) | 116.112 (2) |
V (Å3) | 5191.5 (6) |
Z | 8 |
Radiation type | Mo Kα |
µ (mm−1) | 0.16 |
Crystal size (mm) | 0.31 × 0.16 × 0.06 |
Data collection | |
Diffractometer | Bruker APEXII DUO CCD area-detector diffractometer |
Absorption correction | Multi-scan (SADABS; Bruker, 2009) |
Tmin, Tmax | 0.951, 0.990 |
No. of measured, independent and observed [I > 2σ(I)] reflections | 24705, 5921, 4378 |
Rint | 0.056 |
(sin θ/λ)max (Å−1) | 0.650 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.048, 0.149, 1.04 |
No. of reflections | 5921 |
No. of parameters | 337 |
H-atom treatment | H-atom parameters constrained |
Δρmax, Δρmin (e Å−3) | 0.63, −0.22 |
Computer programs: APEX2 (Bruker, 2009), SAINT (Bruker, 2009), SHELXTL (Sheldrick, 2008) and PLATON (Spek, 2009).
Cg1 is the centroid of the 1,2,4-triazole ring (N2/C8/N3/N4/C9). |
D—H···A | D—H | H···A | D···A | D—H···A |
C7—H7A···S1 | 0.9300 | 2.5100 | 3.221 (2) | 133.00 |
C22—H22A···Cg1i | 0.9700 | 2.64 | 3.492 (2) | 146 |
Symmetry code: (i) x, y−1, z. |
Acknowledgements
The authors thank Universiti Sains Malaysia (USM) for the Research University Golden Goose grant (No. 1001/PFIZIK/811012). JHG also thanks USM for the award of a USM fellowship.
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.
Non-steroidal anti-inflammatory drugs (NSAIDs) are widely used. Despite their large therapeutic applications, they have several undesired, often serious side effects (Calhoun et al., 1995). Therefore, long term administration is not advisable. The need for new anti-inflammatory drugs is obvious and accordingly, there have been renewed interest in anti-inflammatory agents endowed with potent biological activity. In this context, it has been shown that some Mannich bases find applications as anti-inflammatory, analgesic agents (Sujith et al., 2009) and anti-microbial properties (Pandeya et al., 1999, 2000).
The asymmetric unit of the title 1,2,4-triazole compound (Fig. 1) comprises of a (E)-4-[(4-fluorobenzylidene)amino]-3-[1-(4-isobutylphenyl)ethyl] -1-(morpholinomethyl)-1H-1,2,4-triazole-5(4H)-thione molecule and a methanol molecule of crystallization, which is partially occupied with a fixed occupancy of 0.5. The atom C27 of the methanol solvent molecule is disordered over two sites with an equal occupancy of 0.25. Both the disordered components are further disordered over a crystallographic two-fold rotation [symmetry code to generate equivalent atoms: -x, y, -z + 1/2]. The main molecule exists in an E configuration with respect to the acyclic C7═N1 double bond [bond length of C7═N1 = 1.276 (2) Å and torsion angle of C6–C7–N1–N2 of 176.41 (16)°]. An intramolecular C7—H7A···S1 hydrogen bond generates a six-membered ring, producing an S(6) ring motif (Bernstein et al., 1995). The morpholino unit adopts a chair conformation, with puckering parameters of Q = 0.580 (2) Å, θ = 178.2 (2)° and φ = 126 (6)°. The 1,2,4-triazole ring (N2/C8/N3/N4/C9) is essentially planar, with maximum deviation of -0.013 (2) Å for atom N2. The 1,2,4-triazole ring is inclined at dihedral angles of 11.21 (10) and 67.53 (11)°, respectively, with fluorophenyl group (C1-C6/F1) and isobutyl-substituted benzene ring (C11-C16). The bond lengths and angles are consistent to those observed in closely related structures (Goh et al., 2010a,b).
In the crystal structure, no significant intermolecular hydrogen bonds are observed. The crystal structure is stabilized by a weak intermolecular C22—H22A···Cg1 interactions (Table 1) involving the 1,2,4-triazole ring.