organic compounds
1-[2-(2,4-Dichlorobenzyloxy)-2-(2-furyl)ethyl]-1H-1,2,4-triazole
aDepartment of Chemistry, Zonguldak Karaelmas University, 67100 Zonguldak, Turkey, bDepartment of Chemistry, Southampton University, SO17 1BJ Southampton, England, and cDepartment of Physics, Hacettepe University, 06800 Beytepe, Ankara, Turkey
*Correspondence e-mail: merzifon@hacettepe.edu.tr
In the molecule of the title compound, C15H13Cl2N3O2, the triazole ring is oriented at dihedral angles of 14.8 (2) and 81.5 (1)° to the furan and dichlorobenzene rings, respectively. The dihedral angle between the dichlorobenzene and furan rings is 86.3 (2)°. An intramolecular C—H⋯O hydrogen bond results in the formation of a planar [maximum deviation 0.012 (2) Å] five-membered ring, which is oriented at a dihedral angle of 0.90 (7)° with respect to the dichlorobenzene ring. There is an intermolecular C—H⋯π contact between the methylene group and the dichlorobenzene ring.
Related literature
For general background to the use of ether structures containing 1H-imidazole and 1H-1,2,4-triazole rings as antifungal agents, see: Caira et al. (2004); Godefroi et al. (1969); Özel Güven et al. (2007a,b); Paulvannan et al. (2001); Peeters et al. (1996); Wahbi et al. (1995). For related structures, see: Freer et al. (1986); Özel Güven et al. (2008a,b,c,d,e,f); Peeters et al. (1979).
Experimental
Crystal data
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Refinement
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Data collection: COLLECT (Nonius, 1998); cell DENZO (Otwinowski & Minor, 1997) and COLLECT; data reduction: DENZO and COLLECT; program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: ORTEP-3 for Windows (Farrugia, 1997); software used to prepare material for publication: WinGX (Farrugia, 1999) and PLATON (Spek, 2009).
Supporting information
https://doi.org/10.1107/S1600536809044018/ci2951sup1.cif
contains datablocks I, global. DOI:Structure factors: contains datablock I. DOI: https://doi.org/10.1107/S1600536809044018/ci2951Isup2.hkl
The title compound was synthesized by the reaction of 1-(furan-2-yl)-2-(1H-1, 2,4-triazol-1-yl)ethanol (unpublished results) with NaH and appropriate benzyl halide. To a solution of alcohol (400 mg, 2.232 mmol) in DMF (4 ml) was added NaH (89 mg, 2.232 mmol) in small fractions. The appropriate benzyl halide (436 mg, 2.232 mmol) was added dropwise. The mixture was stirred at room temperature for 3 h, and excess hydride was decomposed with methyl alcohol (5 ml). After evaporation to dryness under reduced pressure, the crude residue was suspended with water and extracted with methylene chloride. The organic layer was dried over anhydrous sodium sulfate and then evaporated to dryness. The crude residue was purified by
on a silica-gel column using chloroform as Crystals suitable for X-ray analysis were obtained by the recrystallization of the ether from 2-propanol (yield; 355 mg, 47%).H atoms were positioned geometrically, with C-H = 0.93, 0.98 and 0.97 Å for aromatic, methine and methylene H, respectively, and constrained to ride on their parent atoms with Uiso(H) = 1.2Ueq(C).
In recent years, among antifungal agents, azole derivatives still have an important place in the class of systemic antifungal drugs. Some ether structures containing 1H-imidazole ring like micozanole, ecozanole and sulconazole have been synthesized and developed for clinical uses as antifungal agents (Godefroi et al., 1969). The crystal structures of these ether derivatives like miconazole (Peeters et al., 1979), econazole (Freer et al., 1986) have been reported previously. Also, antifungal activity of aromatic
possessing 1H-1,2,4-triazole ring have been reported (Wahbi et al., 1995). Itraconazole (Peeters et al., 1996) and fluconazole (Caira et al., 2004) are 1H-1,2,4-triazole ring containing azole derivatives. 1,2,4-Triazoles are biologically interesting molecules and their chemistry is receiving considerable attention due to antihypertensive, antifungal and antibacterial properties (Paulvannan et al., 2001). Ether structures possessing 1H-benzimidazole ring have been reported to show antibacterial activity more than antifungal activity (Özel Güven et al., 2007a,b). The crystal structures of 1H-benzimidazole ring containing ether derivatives (Özel Güven et al., 2008a,b,c,d) and also,1H-1,2,4-triazole ring containing ether derivatives have been reported recently (Özel Güven et al., 2008e,f). Now, we report herein the of 2,4-dichloro- derivative of 1H-1,2,4-triazole and furyl rings containing ether structure.In the molecule of the title compound (Fig. 1) the bond lengths and angles are generally within normal ranges. The planar triazole ring is oriented with respect to the furan and dichlorobenzene rings at dihedral angles of 14.8 (2)° and 81.5 (1)°, respectively. Atoms C3, C4 and C9 are -0.021 (2), 0.029 (2) and 0.034 (4) Å away from the planes of the triazole, furan and dichlorobenzene, respectively. So, they are nearly coplanar with the adjacent rings. The dichlorobenzene ring is oriented with respect to the furan ring at a dihedral angle of 86.3 (2)°. An intramolecular C—H···O hydrogen bond (Table 1) results in the formation of a planar five-membered ring (O1/H11/C9–C11), which is oriented with respect to dichlorobenzene ring at a dihedral angle of 0.90 (7)°. So, they are coplanar.
In the crystal, an intermolecular C—H···π interaction (Table 1) is observed between the methylene group and the dichlorobenzene ring. A view of the molecular packing in the crystal is shown in Fig.2.
For general background to the use of ether structures containing 1H-imidazole and1H-1,2,4-triazole rings as antifungal agents, see: Caira et al. (2004); Godefroi et al. (1969); Özel Güven et al. (2007a,b); Paulvannan et al. (2001); Peeters et al. (1996); Wahbi et al. (1995). For related structures, see: Freer et al. (1986); Özel Güven et al. (2008a,b,c,d,e,f); Peeters et al. (1979). Cg1 is the centriod of the C10—C15 ring.
Data collection: COLLECT (Nonius, 1998); cell
DENZO (Otwinowski & Minor, 1997) and COLLECT (Nonius, 1998); data reduction: DENZO (Otwinowski & Minor, 1997) and COLLECT (Nonius, 1998); program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: ORTEP-3 for Windows (Farrugia, 1997); software used to prepare material for publication: WinGX (Farrugia, 1999) and PLATON (Spek, 2009).C15H13Cl2N3O2 | F(000) = 696 |
Mr = 338.18 | Dx = 1.444 Mg m−3 |
Monoclinic, P21/n | Mo Kα radiation, λ = 0.71073 Å |
Hall symbol: -P 2yn | Cell parameters from 3274 reflections |
a = 10.6057 (2) Å | θ = 2.9–27.5° |
b = 13.3560 (3) Å | µ = 0.43 mm−1 |
c = 11.1919 (2) Å | T = 120 K |
β = 101.170 (1)° | Plate, colourless |
V = 1555.30 (5) Å3 | 0.50 × 0.35 × 0.20 mm |
Z = 4 |
Bruker–Nonius Kappa CCD diffractometer | 3547 independent reflections |
Radiation source: fine-focus sealed tube | 2522 reflections with I > 2σ(I) |
Graphite monochromator | Rint = 0.025 |
φ and ω scans | θmax = 27.5°, θmin = 3.0° |
Absorption correction: multi-scan (SADABS; Sheldrick, 2007) | h = −13→13 |
Tmin = 0.815, Tmax = 0.920 | k = −17→17 |
6687 measured reflections | l = −14→14 |
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)] = 0.052 | Hydrogen site location: inferred from neighbouring sites |
wR(F2) = 0.161 | H-atom parameters constrained |
S = 1.06 | w = 1/[σ2(Fo2) + (0.0852P)2 + 0.4221P] where P = (Fo2 + 2Fc2)/3 |
3547 reflections | (Δ/σ)max = 0.001 |
199 parameters | Δρmax = 0.77 e Å−3 |
0 restraints | Δρmin = −0.33 e Å−3 |
C15H13Cl2N3O2 | V = 1555.30 (5) Å3 |
Mr = 338.18 | Z = 4 |
Monoclinic, P21/n | Mo Kα radiation |
a = 10.6057 (2) Å | µ = 0.43 mm−1 |
b = 13.3560 (3) Å | T = 120 K |
c = 11.1919 (2) Å | 0.50 × 0.35 × 0.20 mm |
β = 101.170 (1)° |
Bruker–Nonius Kappa CCD diffractometer | 3547 independent reflections |
Absorption correction: multi-scan (SADABS; Sheldrick, 2007) | 2522 reflections with I > 2σ(I) |
Tmin = 0.815, Tmax = 0.920 | Rint = 0.025 |
6687 measured reflections |
R[F2 > 2σ(F2)] = 0.052 | 0 restraints |
wR(F2) = 0.161 | H-atom parameters constrained |
S = 1.06 | Δρmax = 0.77 e Å−3 |
3547 reflections | Δρmin = −0.33 e Å−3 |
199 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 | ||
Cl1 | 0.48306 (8) | 0.29223 (6) | 0.76970 (7) | 0.0823 (3) | |
Cl2 | 0.66147 (6) | 0.12991 (6) | 0.39547 (7) | 0.0719 (3) | |
O1 | 0.26246 (14) | 0.02290 (13) | 0.27553 (13) | 0.0523 (4) | |
O2 | 0.20740 (18) | 0.07592 (15) | 0.01684 (16) | 0.0673 (5) | |
N1 | 0.06121 (18) | −0.11249 (15) | 0.27806 (16) | 0.0498 (5) | |
N2 | 0.0878 (2) | −0.20960 (17) | 0.3093 (2) | 0.0648 (6) | |
N3 | 0.0001 (2) | −0.13162 (18) | 0.45167 (19) | 0.0644 (6) | |
C1 | 0.0492 (3) | −0.2156 (2) | 0.4135 (3) | 0.0657 (7) | |
H1 | 0.0556 | −0.2746 | 0.4583 | 0.079* | |
C2 | 0.0106 (3) | −0.0688 (2) | 0.3648 (2) | 0.0598 (6) | |
H2 | −0.0142 | −0.0019 | 0.3637 | 0.072* | |
C3 | 0.0914 (2) | −0.0710 (2) | 0.16712 (19) | 0.0550 (6) | |
H3A | 0.0425 | −0.0100 | 0.1464 | 0.066* | |
H3B | 0.0658 | −0.1183 | 0.1011 | 0.066* | |
C4 | 0.2337 (2) | −0.04811 (18) | 0.17976 (19) | 0.0495 (5) | |
H4 | 0.2831 | −0.1093 | 0.2036 | 0.059* | |
C5 | 0.2625 (2) | −0.01101 (19) | 0.0610 (2) | 0.0505 (5) | |
C6 | 0.2450 (3) | 0.0932 (3) | −0.0918 (2) | 0.0760 (8) | |
H6 | 0.2218 | 0.1486 | −0.1416 | 0.091* | |
C7 | 0.3176 (4) | 0.0206 (3) | −0.1140 (3) | 0.0926 (11) | |
H7 | 0.3551 | 0.0147 | −0.1823 | 0.111* | |
C8 | 0.3303 (3) | −0.0490 (3) | −0.0155 (3) | 0.0884 (10) | |
H8 | 0.3765 | −0.1086 | −0.0071 | 0.106* | |
C9 | 0.3934 (2) | 0.05052 (18) | 0.30581 (19) | 0.0460 (5) | |
H9A | 0.4171 | 0.0885 | 0.2396 | 0.055* | |
H9B | 0.4468 | −0.0089 | 0.3191 | 0.055* | |
C10 | 0.4136 (2) | 0.11323 (16) | 0.41992 (18) | 0.0430 (5) | |
C11 | 0.3143 (2) | 0.13351 (19) | 0.4814 (2) | 0.0528 (6) | |
H11 | 0.2325 | 0.1087 | 0.4508 | 0.063* | |
C12 | 0.3349 (2) | 0.1896 (2) | 0.5868 (2) | 0.0590 (6) | |
H12 | 0.2674 | 0.2025 | 0.6267 | 0.071* | |
C13 | 0.4554 (2) | 0.22648 (19) | 0.6326 (2) | 0.0547 (6) | |
C14 | 0.5566 (2) | 0.20958 (18) | 0.5743 (2) | 0.0532 (6) | |
H14 | 0.6379 | 0.2351 | 0.6052 | 0.064* | |
C15 | 0.5333 (2) | 0.15318 (17) | 0.4678 (2) | 0.0470 (5) |
U11 | U22 | U33 | U12 | U13 | U23 | |
Cl1 | 0.1025 (6) | 0.0819 (6) | 0.0616 (4) | −0.0194 (4) | 0.0135 (4) | −0.0290 (4) |
Cl2 | 0.0461 (4) | 0.0894 (6) | 0.0834 (5) | −0.0112 (3) | 0.0204 (3) | −0.0183 (4) |
O1 | 0.0435 (8) | 0.0694 (11) | 0.0444 (8) | −0.0108 (7) | 0.0093 (6) | −0.0156 (7) |
O2 | 0.0722 (12) | 0.0746 (13) | 0.0579 (10) | 0.0045 (10) | 0.0191 (8) | 0.0056 (9) |
N1 | 0.0488 (10) | 0.0542 (12) | 0.0468 (10) | −0.0102 (9) | 0.0101 (8) | −0.0052 (8) |
N2 | 0.0735 (14) | 0.0536 (13) | 0.0701 (14) | −0.0059 (11) | 0.0206 (11) | −0.0055 (10) |
N3 | 0.0621 (13) | 0.0746 (16) | 0.0615 (12) | 0.0017 (11) | 0.0249 (10) | 0.0094 (11) |
C1 | 0.0627 (16) | 0.0617 (17) | 0.0743 (17) | −0.0078 (13) | 0.0171 (13) | 0.0120 (13) |
C2 | 0.0644 (15) | 0.0610 (16) | 0.0577 (13) | 0.0051 (12) | 0.0213 (11) | 0.0013 (12) |
C3 | 0.0521 (13) | 0.0703 (16) | 0.0415 (11) | −0.0148 (11) | 0.0069 (9) | −0.0046 (10) |
C4 | 0.0505 (12) | 0.0546 (14) | 0.0431 (11) | −0.0075 (10) | 0.0086 (9) | −0.0083 (10) |
C5 | 0.0482 (12) | 0.0583 (14) | 0.0466 (11) | −0.0061 (11) | 0.0133 (9) | −0.0116 (10) |
C6 | 0.081 (2) | 0.095 (2) | 0.0525 (14) | −0.0173 (18) | 0.0141 (13) | 0.0096 (15) |
C7 | 0.101 (2) | 0.125 (3) | 0.0621 (17) | −0.008 (2) | 0.0413 (17) | −0.0092 (18) |
C8 | 0.099 (2) | 0.100 (3) | 0.0766 (19) | 0.0192 (19) | 0.0428 (18) | −0.0125 (17) |
C9 | 0.0430 (11) | 0.0520 (13) | 0.0437 (10) | −0.0073 (10) | 0.0101 (8) | −0.0030 (9) |
C10 | 0.0439 (11) | 0.0428 (12) | 0.0416 (10) | −0.0036 (9) | 0.0067 (8) | 0.0020 (8) |
C11 | 0.0455 (12) | 0.0633 (16) | 0.0495 (12) | −0.0082 (10) | 0.0094 (9) | −0.0073 (10) |
C12 | 0.0594 (14) | 0.0677 (16) | 0.0518 (13) | −0.0041 (12) | 0.0157 (11) | −0.0110 (11) |
C13 | 0.0670 (15) | 0.0499 (14) | 0.0456 (12) | −0.0063 (11) | 0.0072 (10) | −0.0063 (10) |
C14 | 0.0548 (13) | 0.0495 (14) | 0.0508 (12) | −0.0109 (10) | −0.0009 (10) | 0.0008 (10) |
C15 | 0.0434 (11) | 0.0479 (13) | 0.0493 (11) | −0.0030 (9) | 0.0083 (9) | 0.0026 (9) |
Cl1—C13 | 1.742 (2) | C5—C8 | 1.321 (3) |
Cl2—C15 | 1.740 (2) | C6—H6 | 0.93 |
O1—C4 | 1.419 (3) | C7—C6 | 1.293 (5) |
O1—C9 | 1.413 (2) | C7—H7 | 0.93 |
O2—C5 | 1.350 (3) | C8—C7 | 1.428 (5) |
O2—C6 | 1.370 (3) | C8—H8 | 0.93 |
N1—N2 | 1.358 (3) | C9—H9A | 0.97 |
N1—C2 | 1.332 (3) | C9—H9B | 0.97 |
N1—C3 | 1.451 (3) | C10—C15 | 1.386 (3) |
N2—C1 | 1.311 (3) | C10—C11 | 1.391 (3) |
N3—C1 | 1.341 (4) | C10—C9 | 1.508 (3) |
N3—C2 | 1.305 (3) | C11—C12 | 1.379 (3) |
C1—H1 | 0.93 | C11—H11 | 0.93 |
C2—H2 | 0.93 | C12—H12 | 0.93 |
C3—H3A | 0.97 | C13—C12 | 1.373 (3) |
C3—H3B | 0.97 | C14—C13 | 1.378 (4) |
C4—C3 | 1.519 (3) | C14—C15 | 1.391 (3) |
C4—C5 | 1.504 (3) | C14—H14 | 0.93 |
C4—H4 | 0.98 | ||
C9—O1—C4 | 114.40 (16) | C6—C7—C8 | 108.0 (3) |
C5—O2—C6 | 106.9 (2) | C6—C7—H7 | 126.0 |
N2—N1—C3 | 121.0 (2) | C8—C7—H7 | 126.0 |
C2—N1—N2 | 108.9 (2) | C5—C8—C7 | 105.6 (3) |
C2—N1—C3 | 130.1 (2) | C5—C8—H8 | 127.2 |
C1—N2—N1 | 101.6 (2) | C7—C8—H8 | 127.2 |
C2—N3—C1 | 101.9 (2) | O1—C9—C10 | 108.67 (17) |
N2—C1—N3 | 116.1 (2) | O1—C9—H9A | 110.0 |
N2—C1—H1 | 121.9 | O1—C9—H9B | 110.0 |
N3—C1—H1 | 121.9 | C10—C9—H9A | 110.0 |
N1—C2—H2 | 124.3 | C10—C9—H9B | 110.0 |
N3—C2—N1 | 111.4 (2) | H9A—C9—H9B | 108.3 |
N3—C2—H2 | 124.3 | C11—C10—C9 | 122.02 (19) |
N1—C3—C4 | 112.17 (18) | C15—C10—C9 | 120.72 (19) |
N1—C3—H3A | 109.2 | C15—C10—C11 | 117.3 (2) |
N1—C3—H3B | 109.2 | C10—C11—H11 | 119.4 |
C4—C3—H3A | 109.2 | C12—C11—C10 | 121.3 (2) |
C4—C3—H3B | 109.2 | C12—C11—H11 | 119.4 |
H3A—C3—H3B | 107.9 | C11—C12—H12 | 120.1 |
O1—C4—C5 | 113.35 (19) | C13—C12—C11 | 119.8 (2) |
O1—C4—C3 | 105.63 (18) | C13—C12—H12 | 120.1 |
O1—C4—H4 | 109.0 | C12—C13—Cl1 | 119.7 (2) |
C3—C4—H4 | 109.0 | C12—C13—C14 | 121.2 (2) |
C5—C4—C3 | 110.63 (18) | C14—C13—Cl1 | 119.08 (19) |
C5—C4—H4 | 109.0 | C13—C14—C15 | 118.0 (2) |
O2—C5—C4 | 117.3 (2) | C13—C14—H14 | 121.0 |
C8—C5—O2 | 110.1 (3) | C15—C14—H14 | 121.0 |
C8—C5—C4 | 132.5 (3) | C10—C15—Cl2 | 119.41 (17) |
O2—C6—H6 | 125.3 | C10—C15—C14 | 122.5 (2) |
C7—C6—O2 | 109.3 (3) | C14—C15—Cl2 | 118.09 (18) |
C7—C6—H6 | 125.3 | ||
C9—O1—C4—C3 | 177.01 (19) | C3—C4—C5—C8 | −113.9 (3) |
C9—O1—C4—C5 | −61.7 (3) | O2—C5—C8—C7 | 0.9 (4) |
C4—O1—C9—C10 | −171.48 (18) | C4—C5—C8—C7 | 178.2 (3) |
C6—O2—C5—C4 | −178.8 (2) | C8—C7—C6—O2 | −0.2 (4) |
C6—O2—C5—C8 | −1.0 (3) | C5—C8—C7—C6 | −0.4 (4) |
C5—O2—C6—C7 | 0.8 (3) | C11—C10—C9—O1 | 2.1 (3) |
C2—N1—N2—C1 | 0.4 (3) | C15—C10—C9—O1 | −177.9 (2) |
C3—N1—N2—C1 | 178.7 (2) | C9—C10—C11—C12 | 178.9 (2) |
N2—N1—C2—N3 | −0.9 (3) | C15—C10—C11—C12 | −1.1 (4) |
C3—N1—C2—N3 | −179.0 (2) | C9—C10—C15—Cl2 | −0.3 (3) |
N2—N1—C3—C4 | −77.0 (3) | C9—C10—C15—C14 | −178.6 (2) |
C2—N1—C3—C4 | 100.9 (3) | C11—C10—C15—Cl2 | 179.67 (18) |
N1—N2—C1—N3 | 0.2 (3) | C11—C10—C15—C14 | 1.4 (3) |
C2—N3—C1—N2 | −0.7 (3) | C10—C11—C12—C13 | 0.0 (4) |
C1—N3—C2—N1 | 1.0 (3) | Cl1—C13—C12—C11 | −176.9 (2) |
O1—C4—C3—N1 | −60.3 (3) | C14—C13—C12—C11 | 0.9 (4) |
C5—C4—C3—N1 | 176.7 (2) | C15—C14—C13—Cl1 | 177.24 (18) |
O1—C4—C5—O2 | −55.2 (3) | C15—C14—C13—C12 | −0.6 (4) |
O1—C4—C5—C8 | 127.7 (3) | C13—C14—C15—C10 | −0.6 (4) |
C3—C4—C5—O2 | 63.3 (3) | C13—C14—C15—Cl2 | −178.91 (19) |
D—H···A | D—H | H···A | D···A | D—H···A |
C11—H11···O1 | 0.93 | 2.35 | 2.702 (3) | 102 |
C9—H9B···Cg1i | 0.97 | 2.90 | 3.775 (3) | 151 |
Symmetry code: (i) −x+1, −y, −z+1. |
Experimental details
Crystal data | |
Chemical formula | C15H13Cl2N3O2 |
Mr | 338.18 |
Crystal system, space group | Monoclinic, P21/n |
Temperature (K) | 120 |
a, b, c (Å) | 10.6057 (2), 13.3560 (3), 11.1919 (2) |
β (°) | 101.170 (1) |
V (Å3) | 1555.30 (5) |
Z | 4 |
Radiation type | Mo Kα |
µ (mm−1) | 0.43 |
Crystal size (mm) | 0.50 × 0.35 × 0.20 |
Data collection | |
Diffractometer | Bruker–Nonius Kappa CCD |
Absorption correction | Multi-scan (SADABS; Sheldrick, 2007) |
Tmin, Tmax | 0.815, 0.920 |
No. of measured, independent and observed [I > 2σ(I)] reflections | 6687, 3547, 2522 |
Rint | 0.025 |
(sin θ/λ)max (Å−1) | 0.649 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.052, 0.161, 1.06 |
No. of reflections | 3547 |
No. of parameters | 199 |
H-atom treatment | H-atom parameters constrained |
Δρmax, Δρmin (e Å−3) | 0.77, −0.33 |
Computer programs: DENZO (Otwinowski & Minor, 1997) and COLLECT (Nonius, 1998), SHELXS97 (Sheldrick, 2008), SHELXL97 (Sheldrick, 2008), ORTEP-3 for Windows (Farrugia, 1997), WinGX (Farrugia, 1999) and PLATON (Spek, 2009).
D—H···A | D—H | H···A | D···A | D—H···A |
C11—H11···O1 | 0.93 | 2.35 | 2.702 (3) | 102 |
C9—H9B···Cg1i | 0.97 | 2.90 | 3.775 (3) | 151 |
Symmetry code: (i) −x+1, −y, −z+1. |
Acknowledgements
The authors acknowledge the Zonguldak Karaelmas University Research Fund (Project No. 2008–13–02–06) for financial support.
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In recent years, among antifungal agents, azole derivatives still have an important place in the class of systemic antifungal drugs. Some ether structures containing 1H-imidazole ring like micozanole, ecozanole and sulconazole have been synthesized and developed for clinical uses as antifungal agents (Godefroi et al., 1969). The crystal structures of these ether derivatives like miconazole (Peeters et al., 1979), econazole (Freer et al., 1986) have been reported previously. Also, antifungal activity of aromatic ethers possessing 1H-1,2,4-triazole ring have been reported (Wahbi et al., 1995). Itraconazole (Peeters et al., 1996) and fluconazole (Caira et al., 2004) are 1H-1,2,4-triazole ring containing azole derivatives. 1,2,4-Triazoles are biologically interesting molecules and their chemistry is receiving considerable attention due to antihypertensive, antifungal and antibacterial properties (Paulvannan et al., 2001). Ether structures possessing 1H-benzimidazole ring have been reported to show antibacterial activity more than antifungal activity (Özel Güven et al., 2007a,b). The crystal structures of 1H-benzimidazole ring containing ether derivatives (Özel Güven et al., 2008a,b,c,d) and also,1H-1,2,4-triazole ring containing ether derivatives have been reported recently (Özel Güven et al., 2008e,f). Now, we report herein the crystal structure of 2,4-dichloro- derivative of 1H-1,2,4-triazole and furyl rings containing ether structure.
In the molecule of the title compound (Fig. 1) the bond lengths and angles are generally within normal ranges. The planar triazole ring is oriented with respect to the furan and dichlorobenzene rings at dihedral angles of 14.8 (2)° and 81.5 (1)°, respectively. Atoms C3, C4 and C9 are -0.021 (2), 0.029 (2) and 0.034 (4) Å away from the planes of the triazole, furan and dichlorobenzene, respectively. So, they are nearly coplanar with the adjacent rings. The dichlorobenzene ring is oriented with respect to the furan ring at a dihedral angle of 86.3 (2)°. An intramolecular C—H···O hydrogen bond (Table 1) results in the formation of a planar five-membered ring (O1/H11/C9–C11), which is oriented with respect to dichlorobenzene ring at a dihedral angle of 0.90 (7)°. So, they are coplanar.
In the crystal, an intermolecular C—H···π interaction (Table 1) is observed between the methylene group and the dichlorobenzene ring. A view of the molecular packing in the crystal is shown in Fig.2.