supplementary materials


HTML versionpdf versioncif file3d viewstructure factorssupplementary materialsCIF check reportsimilar papers Open access

Acta Cryst. (2009). E65, o329    [ doi:10.1107/S1600536809001482 ]

5-(2-Methoxybenzyl)-4-(2-methoxyphenyl)-4H-1,2,4-triazol-3-ol

M. Hanif, G. Qadeer, N. H. Rama, J. Akhtar and M. Helliwell

Abstract top

In the molecule of the title compound, C17H17N3O3, the triazole ring is oriented at dihedral angles of 88.09 (3) and 83.72 (3)° with respect to the 2-methoxybenzyl and 2-methoxyphenyl rings, respectively. The dihedral angle between the 2-methoxybenzyl and 2-methoxyphenyl rings is 52.95 (3)°. In the crystal structure, intermolecular N-H...O hydrogen bonds link the molecules into centrosymmetric dimers. There is a [pi]-[pi] contact between the 2-methoxyphenyl rings [centroid-centroid distance = 3.811 (3) Å].

Comment top

Substituted triazole derivatives display significant biological activities including antimicrobial (Holla et al., 1998), analgesic (Turan-Zitouni et al., 1999), antitumor (Demirbas et al., 2002), antihypertensive (Paulvannan et al., 2000) and antiviral (Kritsanida et al., 2002) activities. The biological activity is closely related to the structure, possibly being due to the presence of the —N—C—S unit (Omar et al., 1986). We are interested in the syntheses and biological activities of the aryloxyacetyl hydrazide derivatives and report herein the synthesis and crystal structure of the title compound.

In the molecule of the title compound (Fig. 1), the bond lengths (Allen et al., 1987) and angles are within normal ranges, and they are comparable with those observed in related structures (Öztürk et al., 2004a,b). In the triazole ring, the N2=C1 [1.2960 (16) Å] bond has double bond character. Rings A (N1/N2/N3/C1/C2), B (C4-C9) and C (C11-C16) are, of course, planar and the dihedral angles between them are A/B = 88.09 (3)°, A/C = 83.72 (3)° and B/C = 52.95 (3)°.

In the crystal structure, intermolecular N-H···O hydrogen bonds (Table 1) link the molecules into centrosymmetric dimers (Fig. 2), in which they may be effective in the stabilization of the structure. The π—π contact between the 2-methoxyphenyl rings, Cg1···Cg1i [symmetry code: (i) -x, 2 - y, -z, where Cg1 is the centroid of the ring C (C11-C16)] may further stabilize the structure, with centroid-centroid distance of 3.811 (3) Å.

Related literature top

For general background, see: Demirbas et al. (2002); Holla et al. (1998); Kritsanida et al. (2002); Omar et al. (1986); Paulvannan et al. (2000); Turan-Zitouni et al. (1999). For related structures, see: Öztürk et al. (2004a,b). For bond-length data, see: Allen et al. (1987).

Experimental top

The synthesis of the title compound was carried out by refluxing a solution of 4-(2-methoxyphenyl)-1-(2-(2-methoxyphenyl)acetyl)semicarbazide (3.29 g, 10 mmol) in NaOH (2M) for 5 h. Crystals suitable for X-ray analysis were obtained by recrystallization from an aqeous ethanol solution at room temperature (yield; 79%; m.p. 444–445 K).

Refinement top

H3N atom (for NH) was located in difference synthesis and refined isotropically [N-H = 0.890 (17) Å and Uiso(H) = 0.029 (4) Å2]. The remaining H atoms were positioned geometrically, with C-H = 0.95, 0.99 and 0.98 Å for aromatic, methylene and methyl H, respectively, and constrained to ride on their parent atoms with Uiso(H) = xUeq(C), where x = 1.5 for methyl H and x = 1.2 for all other H atoms.

Computing details top

Data collection: SMART (Bruker, 2001); cell refinement: SAINT (Bruker, 2002); data reduction: SAINT (Bruker, 2002); 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).

Figures top
[Figure 1] Fig. 1. The molecular structure of the title molecule, with the atom-numbering scheme. Displacement ellipsoids are drawn at the 50% probability level.
[Figure 2] Fig. 2. A partial packing diagram. Hydrogen bonds are shown as dashed lines.
[Figure 3] Fig. 3. Reaction scheme.
5-(2-Methoxybenzyl)-4-(2-methoxyphenyl)-4H-1,2,4-triazol-3-ol top
Crystal data top
C17H17N3O3F(000) = 656
Mr = 311.34Dx = 1.342 Mg m−3
Monoclinic, P21/cMelting point: 444(1) K
Hall symbol: -P 2ybcMo Kα radiation, λ = 0.71073 Å
a = 7.4941 (12) ÅCell parameters from 912 reflections
b = 8.3730 (13) Åθ = 2.7–26.4°
c = 24.770 (4) ŵ = 0.09 mm−1
β = 97.455 (2)°T = 100 K
V = 1541.2 (4) Å3Block, colorless
Z = 40.50 × 0.40 × 0.30 mm
Data collection top
Bruker SMART CCD area-detector
diffractometer		2888 reflections with I > 2σ(I)
Radiation source: fine-focus sealed tubeRint = 0.039
graphiteθmax = 26.4°, θmin = 2.6°
φ and ω scansh = −9→9
11912 measured reflectionsk = −10→10
3160 independent reflectionsl = −30→30
Refinement top
Refinement on F2Primary atom site location: structure-invariant direct methods
Least-squares matrix: fullSecondary atom site location: difference Fourier map
R[F2 > 2σ(F2)] = 0.037Hydrogen site location: inferred from neighbouring sites
wR(F2) = 0.091H atoms treated by a mixture of independent and constrained refinement
S = 1.06 w = 1/[σ2(Fo2) + (0.0403P)2 + 0.586P]
where P = (Fo2 + 2Fc2)/3
3160 reflections(Δ/σ)max = 0.001
214 parametersΔρmax = 0.28 e Å−3
0 restraintsΔρmin = −0.17 e Å−3
Crystal data top
C17H17N3O3V = 1541.2 (4) Å3
Mr = 311.34Z = 4
Monoclinic, P21/cMo Kα radiation
a = 7.4941 (12) ŵ = 0.09 mm−1
b = 8.3730 (13) ÅT = 100 K
c = 24.770 (4) Å0.50 × 0.40 × 0.30 mm
β = 97.455 (2)°
Data collection top
Bruker SMART CCD area-detector
diffractometer		2888 reflections with I > 2σ(I)
11912 measured reflectionsRint = 0.039
3160 independent reflectionsθmax = 26.4°
Refinement top
R[F2 > 2σ(F2)] = 0.037H atoms treated by a mixture of independent and constrained refinement
wR(F2) = 0.091Δρmax = 0.28 e Å−3
S = 1.06Δρmin = −0.17 e Å−3
3160 reflectionsAbsolute structure: ?
214 parametersFlack parameter: ?
0 restraintsRogers parameter: ?
Special details top

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.

Fractional atomic coordinates and isotropic or equivalent isotropic displacement parameters (Å2) top
xyzUiso*/Ueq
O10.29433 (12)0.86489 (10)0.48842 (3)0.0211 (2)
O20.00410 (12)1.09258 (11)0.66422 (4)0.0245 (2)
O30.28378 (12)0.51980 (10)0.59145 (4)0.0232 (2)
N10.22479 (14)0.83390 (12)0.57791 (4)0.0170 (2)
N20.43854 (14)0.98640 (12)0.62165 (4)0.0191 (2)
N30.44636 (14)0.98655 (12)0.56595 (4)0.0186 (2)
H3N0.533 (2)1.0380 (19)0.5514 (7)0.029 (4)*
C10.30443 (16)0.89290 (14)0.62733 (5)0.0171 (2)
C20.32018 (16)0.89290 (14)0.53796 (5)0.0171 (3)
C30.24258 (17)0.84679 (15)0.68016 (5)0.0198 (3)
H3A0.31940.75870.69660.024*
H3B0.11770.80610.67290.024*
C40.24810 (16)0.98237 (14)0.72050 (5)0.0186 (3)
C50.12083 (16)1.10515 (15)0.71152 (5)0.0200 (3)
C60.11769 (18)1.22880 (16)0.74885 (5)0.0244 (3)
H60.03281.31310.74210.029*
C70.23959 (19)1.22812 (17)0.79612 (5)0.0265 (3)
H70.23701.31180.82190.032*
C80.36460 (18)1.10676 (17)0.80600 (5)0.0253 (3)
H80.44671.10610.83860.030*
C90.36928 (17)0.98536 (16)0.76775 (5)0.0221 (3)
H90.45700.90330.77420.027*
C10−0.15902 (18)1.18333 (18)0.66085 (6)0.0296 (3)
H10A−0.22361.15570.69150.044*
H10B−0.23481.15880.62660.044*
H10C−0.13031.29760.66220.044*
C110.07604 (16)0.72543 (14)0.56880 (5)0.0170 (3)
C120.10903 (16)0.56170 (14)0.57578 (5)0.0185 (3)
C13−0.03451 (18)0.45580 (15)0.56618 (5)0.0218 (3)
H13−0.01460.34410.57020.026*
C14−0.20681 (18)0.51395 (16)0.55077 (5)0.0245 (3)
H14−0.30450.44120.54420.029*
C15−0.23904 (17)0.67620 (17)0.54470 (6)0.0253 (3)
H15−0.35800.71450.53450.030*
C16−0.09601 (17)0.78260 (16)0.55360 (5)0.0217 (3)
H16−0.11640.89410.54920.026*
C170.3195 (2)0.35431 (15)0.60309 (6)0.0278 (3)
H17A0.25300.32000.63260.042*
H17B0.44880.33920.61420.042*
H17C0.28130.29060.57040.042*
Atomic displacement parameters (Å2) top
U11U22U33U12U13U23
O10.0264 (5)0.0198 (4)0.0175 (4)−0.0037 (4)0.0046 (4)−0.0005 (3)
O20.0214 (5)0.0280 (5)0.0231 (5)0.0027 (4)−0.0005 (4)−0.0034 (4)
O30.0224 (5)0.0155 (4)0.0309 (5)0.0022 (3)0.0004 (4)0.0022 (4)
N10.0198 (5)0.0142 (5)0.0177 (5)0.0001 (4)0.0048 (4)0.0000 (4)
N20.0221 (5)0.0177 (5)0.0179 (5)−0.0004 (4)0.0045 (4)−0.0004 (4)
N30.0218 (5)0.0170 (5)0.0180 (5)−0.0029 (4)0.0066 (4)0.0000 (4)
C10.0195 (6)0.0131 (6)0.0189 (6)0.0021 (4)0.0034 (5)−0.0008 (4)
C20.0189 (6)0.0127 (6)0.0202 (6)0.0021 (4)0.0047 (5)0.0008 (4)
C30.0236 (6)0.0175 (6)0.0190 (6)−0.0016 (5)0.0062 (5)−0.0001 (5)
C40.0206 (6)0.0187 (6)0.0176 (6)−0.0042 (5)0.0070 (5)0.0000 (5)
C50.0187 (6)0.0232 (6)0.0186 (6)−0.0027 (5)0.0048 (5)−0.0004 (5)
C60.0234 (6)0.0236 (7)0.0274 (7)0.0016 (5)0.0076 (5)−0.0034 (5)
C70.0304 (7)0.0265 (7)0.0238 (7)−0.0056 (6)0.0079 (6)−0.0088 (5)
C80.0260 (7)0.0298 (7)0.0198 (6)−0.0076 (5)0.0018 (5)−0.0014 (5)
C90.0209 (6)0.0237 (7)0.0221 (6)−0.0013 (5)0.0045 (5)0.0024 (5)
C100.0217 (7)0.0337 (8)0.0326 (8)0.0036 (6)0.0007 (6)0.0025 (6)
C110.0201 (6)0.0164 (6)0.0153 (6)−0.0029 (5)0.0050 (5)−0.0011 (4)
C120.0215 (6)0.0183 (6)0.0160 (6)0.0009 (5)0.0036 (5)−0.0002 (5)
C130.0280 (7)0.0168 (6)0.0214 (6)−0.0029 (5)0.0059 (5)−0.0014 (5)
C140.0234 (6)0.0262 (7)0.0246 (7)−0.0080 (5)0.0062 (5)−0.0047 (5)
C150.0190 (6)0.0302 (7)0.0267 (7)0.0021 (5)0.0028 (5)−0.0031 (5)
C160.0252 (7)0.0192 (6)0.0211 (6)0.0030 (5)0.0043 (5)−0.0009 (5)
C170.0322 (7)0.0172 (7)0.0328 (7)0.0055 (5)0.0003 (6)0.0029 (5)
Geometric parameters (Å, °) top
O1—C21.2397 (15)C7—C81.382 (2)
O2—C51.3724 (15)C7—H70.9500
O2—C101.4326 (16)C8—C91.3931 (19)
O3—C121.3627 (15)C8—H80.9500
O3—C171.4335 (15)C9—H90.9500
N1—C11.3817 (16)C10—H10A0.9800
N1—C21.3848 (15)C10—H10B0.9800
N1—C111.4329 (15)C10—H10C0.9800
N2—C11.2960 (16)C11—C161.3811 (18)
N2—N31.3884 (15)C11—C121.3998 (17)
N3—C21.3489 (16)C12—C131.3905 (18)
N3—H3N0.890 (17)C13—C141.3865 (19)
C1—C31.4947 (17)C13—H130.9500
C3—C41.5093 (17)C14—C151.385 (2)
C3—H3A0.9900C14—H140.9500
C3—H3B0.9900C15—C161.3892 (19)
C4—C91.3854 (18)C15—H150.9500
C4—C51.4004 (18)C16—H160.9500
C5—C61.3903 (18)C17—H17A0.9800
C6—C71.3887 (19)C17—H17B0.9800
C6—H60.9500C17—H17C0.9800
C5—O2—C10116.97 (10)C9—C8—H8120.3
C12—O3—C17116.99 (10)C4—C9—C8121.08 (12)
C1—N1—C2107.57 (10)C4—C9—H9119.5
C1—N1—C11127.15 (10)C8—C9—H9119.5
C2—N1—C11125.22 (10)O2—C10—H10A109.5
C1—N2—N3103.99 (10)O2—C10—H10B109.5
C2—N3—N2113.14 (10)H10A—C10—H10B109.5
C2—N3—H3N124.8 (10)O2—C10—H10C109.5
N2—N3—H3N121.9 (10)H10A—C10—H10C109.5
N2—C1—N1111.82 (11)H10B—C10—H10C109.5
N2—C1—C3125.74 (11)C16—C11—C12121.12 (11)
N1—C1—C3122.41 (11)C16—C11—N1120.19 (11)
O1—C2—N3128.89 (11)C12—C11—N1118.68 (11)
O1—C2—N1127.66 (11)O3—C12—C13125.32 (11)
N3—C2—N1103.45 (10)O3—C12—C11115.79 (11)
C1—C3—C4113.60 (10)C13—C12—C11118.89 (11)
C1—C3—H3A108.8C14—C13—C12119.69 (12)
C4—C3—H3A108.8C14—C13—H13120.2
C1—C3—H3B108.8C12—C13—H13120.2
C4—C3—H3B108.8C15—C14—C13121.17 (12)
H3A—C3—H3B107.7C15—C14—H14119.4
C9—C4—C5118.63 (12)C13—C14—H14119.4
C9—C4—C3122.11 (11)C14—C15—C16119.46 (12)
C5—C4—C3119.17 (11)C14—C15—H15120.3
O2—C5—C6124.12 (12)C16—C15—H15120.3
O2—C5—C4115.15 (11)C11—C16—C15119.65 (12)
C6—C5—C4120.73 (12)C11—C16—H16120.2
C7—C6—C5119.45 (12)C15—C16—H16120.2
C7—C6—H6120.3O3—C17—H17A109.5
C5—C6—H6120.3O3—C17—H17B109.5
C8—C7—C6120.59 (12)H17A—C17—H17B109.5
C8—C7—H7119.7O3—C17—H17C109.5
C6—C7—H7119.7H17A—C17—H17C109.5
C7—C8—C9119.49 (12)H17B—C17—H17C109.5
C7—C8—H8120.3
C1—N2—N3—C2−0.75 (13)C4—C5—C6—C7−1.53 (19)
N3—N2—C1—N1−0.47 (13)C5—C6—C7—C80.7 (2)
N3—N2—C1—C3177.59 (11)C6—C7—C8—C90.8 (2)
C2—N1—C1—N21.47 (13)C5—C4—C9—C80.56 (19)
C11—N1—C1—N2178.77 (11)C3—C4—C9—C8−176.01 (12)
C2—N1—C1—C3−176.66 (11)C7—C8—C9—C4−1.4 (2)
C11—N1—C1—C30.64 (18)C1—N1—C11—C1697.89 (15)
N2—N3—C2—O1−178.27 (12)C2—N1—C11—C16−85.26 (15)
N2—N3—C2—N11.60 (13)C1—N1—C11—C12−81.92 (15)
C1—N1—C2—O1178.09 (12)C2—N1—C11—C1294.93 (14)
C11—N1—C2—O10.72 (19)C17—O3—C12—C13−5.25 (18)
C1—N1—C2—N3−1.78 (12)C17—O3—C12—C11175.20 (11)
C11—N1—C2—N3−179.14 (11)C16—C11—C12—O3−179.25 (11)
N2—C1—C3—C439.80 (17)N1—C11—C12—O30.56 (16)
N1—C1—C3—C4−142.34 (11)C16—C11—C12—C131.16 (18)
C1—C3—C4—C9−111.02 (13)N1—C11—C12—C13−179.03 (11)
C1—C3—C4—C572.42 (15)O3—C12—C13—C14179.51 (11)
C10—O2—C5—C6−18.72 (18)C11—C12—C13—C14−0.95 (18)
C10—O2—C5—C4161.34 (11)C12—C13—C14—C150.01 (19)
C9—C4—C5—O2−179.15 (11)C13—C14—C15—C160.8 (2)
C3—C4—C5—O2−2.47 (16)C12—C11—C16—C15−0.41 (19)
C9—C4—C5—C60.92 (18)N1—C11—C16—C15179.78 (11)
C3—C4—C5—C6177.59 (11)C14—C15—C16—C11−0.54 (19)
O2—C5—C6—C7178.54 (12)
Hydrogen-bond geometry (Å, °) top
D—H···AD—HH···AD···AD—H···A
N3—H3N···O1i0.890 (17)1.911 (18)2.7958 (14)172.6 (15)
Symmetry codes: (i) −x+1, −y+2, −z+1.
Table 1
Hydrogen-bond geometry (Å, °) top
D—H···AD—HH···AD···AD—H···A
N3—H3N···O1i0.890 (17)1.911 (18)2.7958 (14)172.6 (15)
Symmetry codes: (i) −x+1, −y+2, −z+1.
Acknowledgements top

The authors gratefully acknowledge funds from the Higher Education Commission, Islamabad, Pakistan.

references
References top

Allen, F. H., Kennard, O., Watson, D. G., Brammer, L., Orpen, A. G. & Taylor, R. (1987). J. Chem. Soc. Perkin Trans. 2, pp. S1–19.

Bruker (2001). SMART. Bruker AXS Inc., Madison, Wisconsin, USA.

Bruker (2002). SAINT. Bruker AXS Inc., Madison, Wisconsin, USA.

Demirbas, N., Ugurluoglu, R. & Demirbas, A. (2002). Bioorg. Med. Chem. 10, 3717–3723.

Holla, B. S., Gonsalves, R. & Shenoy, S. (1998). Farmaco, 53, 574–578.

Kritsanida, M., Mouroutsou, A., Marakos, P., Pouli, N., Papakonstantinou -Garoufalias, S., Pannecouque, C., Witvrouw, M. & Clercq, E. D. (2002). Farmaco, 57, 253–257.

Omar, A., Mohsen, M. E. & Wafa, O. A. (1986). Heterocycl. Chem. 23, 1339–1341.

Öztürk, S., Akkurt, M., Cansız, A., Koparır, M., Şekerci, M. & Heinemann, F. W. (2004a). Acta Cryst. E60, o425–o427.

Öztürk, S., Akkurt, M., Cansız, A., Koparır, M., Şekerci, M. & Heinemann, F. W. (2004b). Acta Cryst. E60, o642–o644.

Paulvannan, K., Chen, T. & Hale, R. (2000). Tetrahedron, 56, 8071–8076.

Sheldrick, G. M. (2008). Acta Cryst. A64, 112–122.

Turan-Zitouni, G., Kaplancikli, Z. A., Erol, K. & Kilic, F. S. (1999). Farmaco, 54, 218–223.