organic compounds
1-Benzoylmethyl-3-(2-thienylmethyl)-4-(2-thienylmethyleneamino)-1H-1,2,4-triazol-5(4H)-one
aDepartment of Physics, Faculty of Arts & Science, Ondokuz Mayıs University, TR-55139 Kurupelit-Samsun, Turkey, and bDepartment of Chemistry, Karadeniz Technical University, Trabzon, Turkey
*Correspondence e-mail: htanak@omu.edu.tr
In the title compound, C20H16N4O2S2, one of the thiophene rings is disordered [occupancy ratio 0.710 (4):0.290 (4)] and the disorder is of the flip type. An intramolecular C—H⋯O hydrogen bond generates a six-membered ring with an S(6) motif.
Related literature
For general background to 1,2,4-triazoles and thiophenes, see: Santen (2003); Clemons et al. (2004); Chen et al. (1997); Mohareb et al. (2004); Collin et al. (2003). For the graph-set description of hydrogen bonds, see: Bernstein et al. (1995). For reference structural data, see: Allen et al. (1987). For related structures, see: Tanak et al. (2009); Akkurt et al. (2008); Ustabaş et al. (2009).
Experimental
Crystal data
|
Refinement
|
|
Data collection: X-AREA (Stoe & Cie, 2002); cell X-AREA; data reduction: X-RED32 (Stoe & Cie, 2002); 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).
Supporting information
https://doi.org/10.1107/S160053681000005X/dn2520sup1.cif
contains datablocks I, global. DOI:Structure factors: contains datablock I. DOI: https://doi.org/10.1107/S160053681000005X/dn2520Isup2.hkl
The title compound, C20H16N4O2S2, was synthesized by published method (Ünver et al., 2009).
H atoms were positioned geometrically, with C—H = 0.93 and 0.97 Å for aromatic and methylene H, respectively, and constrained to ride on their parent atoms, with Uiso(H) = 1.2Ueq(C). The flip-type disorder means that in their alternative positions, the different types of atoms (in this case sulfur and carbon) occupy positions that are close to each other, which influences their Uij values. The disordered atoms of the thiophene ring were refined using the following restraints: SIMU, DELU, FLAT and SADI (SHELXL97; Sheldrick, 2008).
1,2,4-triazole derivatives are known in the scientific literature for their wide pharmacological activity. Two main types of their activity are antiviral, antibacterial and antifungal activities, and central nervous system (CNS) activity. It was reported that compounds having triazole moieties such as Vorozole, Anastrozole and Letrozole appear to be very effective aromatase inhibitors very useful for preventing breast cancer (Ünver et al., 2009; Santen, 2003; Clemons et al., 2004). It is known that 1,2,4- triazol moieties interact strongly with heme iron, and aromatic substituents on the triazoles are very effective for interacting with the active site aromatase (Chen et al., 1997). Over recent years, there has been an increasing interest in the chemistry of thiophenes because of their biological significance. Many of them have been widely investigated for therapeutic uses, especially as antifungal, antibacterial, antiinflammatory, anticonvulsant, antiasthmatic, and analgesic agents. They also were known to show anti-HIV, antiproliferative, germicidal, and D2 dopaminergic activities (Mohareb et al., 2004). There are antimicrobial agents having different structures are frequently used in treatment of microbial infections. However, there is an increasing resistance to these drugs. Moreover, some of azole derivatives used as common antibiotics such as Amphotericin B posses a toxic effect on humans as well as their antimicrobial effects (Collin et al., 2003). To overcome the development of drug resistance, it is crucial to synthesize a new class of antimicrobials possessing different chemical properties from those of used commonly.
The molecular structure of the title compound (I) is shown in Figure 1. Within the molecule of (I), a flip-disorder of the thiophene ring containing S2 is observed. There are two positions of the thiophene ring, rotated by ca 180° about the single C16—C17 bond. These two orientations are not equivalent; the site-occupation factors refined to 0.710 (4) and 0.290 (4). All the bond lengths and angles of (I) are within normal ranges (Allen et al.,1987; Akkurt et al., 2008; Ustabaş et al., 2009). In (I), thiophene rings and benzyl ring are bridged by 1,2,4-triazole ring system. The dihedral angles between the triazole ring A (N1/N2/C2/N3/C1), the benzyl ring B (C5—C10), the thiophene rings C (C12/C13/C14/C15/S1), D (C17/C21/C20/C19/S2), and E (C17/C18/C19/C20/S3) are 80.04 (14)° (A/B), 11.45 (15)° (A/C), 82.82 (17)° (A/D), 83.5 (2)° (A/E), 74.35 (15)° (B/C), 14.87 (17)° (B/D), 13.8 (2)° (B/E), 79.81 (17)° (C/D) and 80.2 (2)° (C/E). The torsion angles, (N3/N4/C11/C12) and (N2/C3/C4/C5) are 178.43 (19)° and 176.08 (19)°, shows that for the title compound, the side chain conformation induced by anti-conformations, respectively. The interatomic distances within the triazole ring of (I) are not equal. The C1—N1 is double bond and shorter than the conjugated C1—N3 and C2—N3 bonds. The molecular geometry of the triazole ring is in agreement values with the structure 4-(2,3-dihidroxybenzylideneamino)-5-methyl-2H-1,2,4-triazole-3(4H)-one (Tanak et al., 2009).
The molecular structure is stabilized by C—H···O type hydrogen bond. An intramolecular hydrogen bond C11—H11···O1, forming rings with the graph set S(6) (Bernstein et al., 1995), details of which are given in Table 1.
For general background to 1,2,4-triazoles and thiophenes, see: Ünver et al. (2009); Santen (2003); Clemons et al. (2004); Chen et al. (1997); Mohareb et al. (2004); Collin et al. (2003). For the graph-set description of hydrogen bonds, see: Bernstein et al.(1995). For reference structural data, see: Allen et al. (1987). For related structures, see: Tanak et al. (2009); Akkurt et al. (2008); Ustabaş et al. (2009).
Data collection: X-AREA (Stoe & Cie, 2002); cell
X-AREA (Stoe & Cie, 2002); data reduction: X-RED32 (Stoe & Cie, 2002); 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).Fig. 1. The molecular structure of the title compound, showing the atom-numbering scheme and 30% probability diplacement ellipsoids. |
C20H16N4O2S2 | F(000) = 1696 |
Mr = 408.49 | Dx = 1.404 Mg m−3 |
Monoclinic, C2/c | Mo Kα radiation, λ = 0.71073 Å |
Hall symbol: -C 2yc | Cell parameters from 5214 reflections |
a = 25.287 (3) Å | θ = 1.5–26.6° |
b = 5.5347 (4) Å | µ = 0.30 mm−1 |
c = 28.281 (2) Å | T = 296 K |
β = 102.430 (7)° | Needle, colorless |
V = 3865.2 (6) Å3 | 0.80 × 0.37 × 0.14 mm |
Z = 8 |
Stoe IPDS II diffractometer | 3865 independent reflections |
Radiation source: fine-focus sealed tube | 2676 reflections with I > 2σ(I) |
Graphite monochromator | Rint = 0.037 |
Detector resolution: 6.67 pixels mm-1 | θmax = 26.2°, θmin = 1.5° |
rotation method scans | h = −30→31 |
Absorption correction: integration (X-RED32; Stoe & Cie, 2002) | k = −6→6 |
Tmin = 0.776, Tmax = 0.913 | l = −34→34 |
20676 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) = 0.141 | H-atom parameters constrained |
S = 1.05 | w = 1/[σ2(Fo2) + (0.0757P)2 + 0.8966P] where P = (Fo2 + 2Fc2)/3 |
3865 reflections | (Δ/σ)max = 0.001 |
272 parameters | Δρmax = 0.36 e Å−3 |
104 restraints | Δρmin = −0.31 e Å−3 |
C20H16N4O2S2 | V = 3865.2 (6) Å3 |
Mr = 408.49 | Z = 8 |
Monoclinic, C2/c | Mo Kα radiation |
a = 25.287 (3) Å | µ = 0.30 mm−1 |
b = 5.5347 (4) Å | T = 296 K |
c = 28.281 (2) Å | 0.80 × 0.37 × 0.14 mm |
β = 102.430 (7)° |
Stoe IPDS II diffractometer | 3865 independent reflections |
Absorption correction: integration (X-RED32; Stoe & Cie, 2002) | 2676 reflections with I > 2σ(I) |
Tmin = 0.776, Tmax = 0.913 | Rint = 0.037 |
20676 measured reflections |
R[F2 > 2σ(F2)] = 0.049 | 104 restraints |
wR(F2) = 0.141 | H-atom parameters constrained |
S = 1.05 | Δρmax = 0.36 e Å−3 |
3865 reflections | Δρmin = −0.31 e Å−3 |
272 parameters |
Experimental. 281 frames, detector distance = 125 mm |
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 | Occ. (<1) | |
S1 | 0.47605 (4) | 0.54631 (18) | 0.68233 (3) | 0.0833 (3) | |
O1 | 0.53985 (8) | 0.2178 (4) | 0.51294 (7) | 0.0694 (6) | |
O2 | 0.67029 (9) | 0.1247 (4) | 0.51864 (8) | 0.0801 (7) | |
N1 | 0.61243 (9) | −0.1968 (5) | 0.59495 (8) | 0.0610 (6) | |
N2 | 0.59159 (9) | −0.1102 (5) | 0.54847 (8) | 0.0591 (6) | |
N3 | 0.56138 (8) | 0.1266 (4) | 0.59653 (7) | 0.0550 (5) | |
N4 | 0.53290 (9) | 0.2812 (4) | 0.61947 (8) | 0.0567 (6) | |
C1 | 0.59244 (10) | −0.0525 (5) | 0.62262 (9) | 0.0571 (7) | |
C2 | 0.56182 (10) | 0.0935 (5) | 0.54744 (9) | 0.0565 (7) | |
C3 | 0.61089 (11) | −0.2103 (5) | 0.50850 (10) | 0.0595 (7) | |
H3A | 0.5814 | −0.2161 | 0.4802 | 0.071* | |
H3B | 0.6232 | −0.3744 | 0.5163 | 0.071* | |
C4 | 0.65705 (11) | −0.0615 (5) | 0.49698 (9) | 0.0558 (6) | |
C5 | 0.68400 (10) | −0.1502 (5) | 0.45852 (9) | 0.0529 (6) | |
C6 | 0.66851 (13) | −0.3618 (6) | 0.43283 (10) | 0.0678 (8) | |
H6 | 0.6405 | −0.4548 | 0.4397 | 0.081* | |
C7 | 0.69452 (16) | −0.4339 (7) | 0.39723 (12) | 0.0829 (10) | |
H7 | 0.6836 | −0.5739 | 0.3797 | 0.099* | |
C8 | 0.73677 (16) | −0.2991 (8) | 0.38754 (13) | 0.0869 (11) | |
H8 | 0.7543 | −0.3483 | 0.3634 | 0.104* | |
C9 | 0.75304 (14) | −0.0933 (7) | 0.41332 (12) | 0.0796 (9) | |
H9 | 0.7821 | −0.0049 | 0.4072 | 0.096* | |
C10 | 0.72666 (12) | −0.0170 (6) | 0.44804 (10) | 0.0643 (7) | |
H10 | 0.7374 | 0.1255 | 0.4648 | 0.077* | |
C11 | 0.50618 (10) | 0.4552 (5) | 0.59640 (9) | 0.0551 (6) | |
H11 | 0.5061 | 0.4836 | 0.5640 | 0.066* | |
C12 | 0.47593 (11) | 0.6068 (5) | 0.62279 (9) | 0.0572 (7) | |
C13 | 0.44447 (12) | 0.8073 (6) | 0.60642 (11) | 0.0672 (7) | |
H13 | 0.4392 | 0.8681 | 0.5751 | 0.081* | |
C14 | 0.42152 (15) | 0.9073 (7) | 0.64294 (13) | 0.0836 (9) | |
H14 | 0.3991 | 1.0424 | 0.6386 | 0.100* | |
C15 | 0.43555 (16) | 0.7853 (7) | 0.68508 (13) | 0.0888 (11) | |
H15 | 0.4240 | 0.8288 | 0.7130 | 0.107* | |
C16 | 0.60269 (12) | −0.0648 (6) | 0.67632 (9) | 0.0678 (8) | |
H16A | 0.6191 | −0.2192 | 0.6870 | 0.081* | |
H16B | 0.5684 | −0.0557 | 0.6863 | 0.081* | |
C17 | 0.63885 (11) | 0.1337 (6) | 0.70048 (8) | 0.0683 (7) | |
S2A | 0.63477 (7) | 0.2526 (3) | 0.75375 (5) | 0.1001 (6) | 0.710 (4) |
C18A | 0.6783 (3) | 0.2503 (12) | 0.6854 (3) | 0.0779 (12) | 0.710 (4) |
H18A | 0.6878 | 0.2147 | 0.6562 | 0.094* | 0.710 (4) |
S2B | 0.68795 (15) | 0.2524 (8) | 0.67823 (15) | 0.0812 (11) | 0.290 (4) |
C18B | 0.6385 (3) | 0.2512 (14) | 0.7420 (3) | 0.0910 (15) | 0.290 (4) |
H18B | 0.6138 | 0.2169 | 0.7612 | 0.109* | 0.290 (4) |
C19 | 0.70600 (12) | 0.4412 (6) | 0.71870 (13) | 0.0940 (9) | |
H19 | 0.7347 | 0.5382 | 0.7146 | 0.113* | |
C20 | 0.68156 (14) | 0.4441 (6) | 0.75479 (11) | 0.0973 (9) | |
H20 | 0.6912 | 0.5538 | 0.7801 | 0.117* |
U11 | U22 | U33 | U12 | U13 | U23 | |
S1 | 0.1088 (7) | 0.0827 (6) | 0.0612 (4) | 0.0136 (5) | 0.0245 (4) | 0.0073 (4) |
O1 | 0.0786 (13) | 0.0740 (14) | 0.0515 (10) | 0.0032 (11) | 0.0049 (9) | 0.0091 (10) |
O2 | 0.0878 (15) | 0.0773 (15) | 0.0819 (14) | −0.0314 (12) | 0.0330 (11) | −0.0300 (12) |
N1 | 0.0583 (13) | 0.0669 (15) | 0.0587 (13) | −0.0020 (12) | 0.0145 (10) | 0.0141 (11) |
N2 | 0.0570 (12) | 0.0669 (16) | 0.0543 (12) | −0.0012 (12) | 0.0137 (10) | 0.0077 (11) |
N3 | 0.0526 (12) | 0.0623 (14) | 0.0506 (11) | 0.0002 (11) | 0.0121 (9) | 0.0091 (10) |
N4 | 0.0554 (12) | 0.0611 (14) | 0.0540 (12) | −0.0021 (11) | 0.0126 (10) | 0.0055 (11) |
C1 | 0.0520 (14) | 0.0639 (17) | 0.0562 (14) | −0.0048 (13) | 0.0134 (11) | 0.0122 (13) |
C2 | 0.0504 (14) | 0.0640 (18) | 0.0543 (14) | −0.0087 (13) | 0.0094 (11) | 0.0054 (13) |
C3 | 0.0612 (16) | 0.0599 (17) | 0.0571 (14) | −0.0074 (13) | 0.0119 (12) | −0.0024 (12) |
C4 | 0.0573 (15) | 0.0559 (17) | 0.0522 (13) | −0.0077 (13) | 0.0072 (11) | −0.0023 (12) |
C5 | 0.0546 (14) | 0.0545 (16) | 0.0471 (12) | 0.0000 (12) | 0.0053 (10) | 0.0021 (11) |
C6 | 0.0774 (19) | 0.0589 (18) | 0.0657 (16) | −0.0015 (15) | 0.0125 (14) | −0.0050 (14) |
C7 | 0.108 (3) | 0.067 (2) | 0.0728 (19) | 0.011 (2) | 0.0178 (18) | −0.0160 (16) |
C8 | 0.100 (3) | 0.094 (3) | 0.074 (2) | 0.024 (2) | 0.0341 (19) | −0.0010 (19) |
C9 | 0.077 (2) | 0.095 (3) | 0.0724 (19) | −0.0003 (19) | 0.0278 (16) | 0.0074 (19) |
C10 | 0.0690 (17) | 0.0680 (19) | 0.0562 (15) | −0.0079 (15) | 0.0138 (13) | −0.0014 (13) |
C11 | 0.0527 (14) | 0.0605 (17) | 0.0503 (13) | −0.0115 (13) | 0.0075 (11) | 0.0025 (12) |
C12 | 0.0587 (15) | 0.0571 (17) | 0.0533 (14) | −0.0084 (13) | 0.0064 (11) | 0.0009 (12) |
C13 | 0.0761 (18) | 0.0598 (17) | 0.0629 (15) | −0.0033 (15) | 0.0093 (13) | −0.0005 (13) |
C14 | 0.093 (2) | 0.068 (2) | 0.087 (2) | 0.0115 (17) | 0.0130 (17) | −0.0029 (17) |
C15 | 0.109 (3) | 0.086 (3) | 0.077 (2) | 0.009 (2) | 0.0300 (19) | −0.0089 (19) |
C16 | 0.0717 (18) | 0.074 (2) | 0.0597 (15) | 0.0011 (16) | 0.0176 (13) | 0.0214 (14) |
C17 | 0.0726 (15) | 0.0800 (16) | 0.0527 (12) | 0.0032 (13) | 0.0144 (11) | 0.0140 (12) |
S2A | 0.1227 (11) | 0.1241 (12) | 0.0609 (8) | −0.0224 (9) | 0.0364 (7) | −0.0061 (7) |
C18A | 0.079 (2) | 0.092 (2) | 0.071 (2) | −0.005 (2) | 0.0339 (18) | 0.0026 (18) |
S2B | 0.0736 (18) | 0.0932 (19) | 0.0825 (18) | −0.0038 (15) | 0.0292 (14) | 0.0002 (14) |
C18B | 0.107 (3) | 0.104 (3) | 0.065 (3) | −0.010 (2) | 0.025 (2) | −0.001 (2) |
C19 | 0.0851 (18) | 0.0907 (19) | 0.1016 (19) | −0.0082 (16) | 0.0097 (15) | 0.0082 (16) |
C20 | 0.119 (2) | 0.097 (2) | 0.0682 (16) | −0.0077 (17) | 0.0020 (16) | 0.0006 (15) |
S1—C15 | 1.685 (4) | C9—H9 | 0.9300 |
S1—C12 | 1.716 (3) | C10—H10 | 0.9300 |
O1—C2 | 1.225 (3) | C11—C12 | 1.446 (4) |
O2—C4 | 1.209 (3) | C11—H11 | 0.9300 |
N1—C1 | 1.294 (4) | C12—C13 | 1.386 (4) |
N1—N2 | 1.392 (3) | C13—C14 | 1.403 (5) |
N2—C2 | 1.352 (4) | C13—H13 | 0.9300 |
N2—C3 | 1.435 (4) | C14—C15 | 1.349 (5) |
N3—N4 | 1.369 (3) | C14—H14 | 0.9300 |
N3—C1 | 1.376 (4) | C15—H15 | 0.9300 |
N3—C2 | 1.403 (3) | C16—C17 | 1.497 (5) |
N4—C11 | 1.273 (3) | C16—H16A | 0.9700 |
C1—C16 | 1.486 (4) | C16—H16B | 0.9700 |
C3—C4 | 1.520 (4) | C17—C18A | 1.333 (8) |
C3—H3A | 0.9700 | C17—C18B | 1.344 (9) |
C3—H3B | 0.9700 | C17—S2B | 1.645 (4) |
C4—C5 | 1.486 (4) | C17—S2A | 1.668 (3) |
C5—C6 | 1.389 (4) | S2A—C20 | 1.584 (4) |
C5—C10 | 1.390 (4) | C18A—C19 | 1.487 (10) |
C6—C7 | 1.375 (5) | C18A—H18A | 0.9300 |
C6—H6 | 0.9300 | S2B—C19 | 1.545 (5) |
C7—C8 | 1.378 (5) | C18B—C20 | 1.512 (10) |
C7—H7 | 0.9300 | C18B—H18B | 0.9300 |
C8—C9 | 1.367 (5) | C19—C20 | 1.302 (6) |
C8—H8 | 0.9300 | C19—H19 | 0.9300 |
C9—C10 | 1.367 (4) | C20—H20 | 0.9300 |
C15—S1—C12 | 91.12 (17) | C13—C12—C11 | 128.4 (2) |
C1—N1—N2 | 103.9 (2) | C13—C12—S1 | 111.3 (2) |
C2—N2—N1 | 113.8 (2) | C11—C12—S1 | 120.2 (2) |
C2—N2—C3 | 125.9 (2) | C12—C13—C14 | 111.6 (3) |
N1—N2—C3 | 119.1 (2) | C12—C13—H13 | 124.2 |
N4—N3—C1 | 119.6 (2) | C14—C13—H13 | 124.2 |
N4—N3—C2 | 131.9 (2) | C15—C14—C13 | 112.4 (3) |
C1—N3—C2 | 108.2 (2) | C15—C14—H14 | 123.8 |
C11—N4—N3 | 120.4 (2) | C13—C14—H14 | 123.8 |
N1—C1—N3 | 111.9 (2) | C14—C15—S1 | 113.5 (3) |
N1—C1—C16 | 125.8 (3) | C14—C15—H15 | 123.2 |
N3—C1—C16 | 122.3 (3) | S1—C15—H15 | 123.2 |
O1—C2—N2 | 129.8 (3) | C1—C16—C17 | 112.8 (2) |
O1—C2—N3 | 128.0 (3) | C1—C16—H16A | 109.0 |
N2—C2—N3 | 102.1 (2) | C17—C16—H16A | 109.0 |
N2—C3—C4 | 111.5 (2) | C1—C16—H16B | 109.0 |
N2—C3—H3A | 109.3 | C17—C16—H16B | 109.0 |
C4—C3—H3A | 109.3 | H16A—C16—H16B | 107.8 |
N2—C3—H3B | 109.3 | C18A—C17—C18B | 101.1 (8) |
C4—C3—H3B | 109.3 | C18A—C17—C16 | 129.4 (4) |
H3A—C3—H3B | 108.0 | C18B—C17—C16 | 129.4 (5) |
O2—C4—C5 | 122.1 (3) | C18B—C17—S2B | 106.8 (4) |
O2—C4—C3 | 119.7 (3) | C16—C17—S2B | 123.8 (2) |
C5—C4—C3 | 118.2 (2) | C18A—C17—S2A | 107.1 (4) |
C6—C5—C10 | 118.7 (3) | C16—C17—S2A | 123.47 (19) |
C6—C5—C4 | 122.6 (3) | S2B—C17—S2A | 112.7 (3) |
C10—C5—C4 | 118.7 (2) | C20—S2A—C17 | 95.14 (19) |
C7—C6—C5 | 120.1 (3) | C17—C18A—C19 | 115.1 (6) |
C7—C6—H6 | 119.9 | C17—C18A—H18A | 122.5 |
C5—C6—H6 | 119.9 | C19—C18A—H18A | 122.5 |
C6—C7—C8 | 120.1 (3) | C19—S2B—C17 | 96.5 (2) |
C6—C7—H7 | 119.9 | C17—C18B—C20 | 114.2 (7) |
C8—C7—H7 | 119.9 | C17—C18B—H18B | 122.9 |
C9—C8—C7 | 120.1 (3) | C20—C18B—H18B | 122.9 |
C9—C8—H8 | 119.9 | C20—C19—C18A | 105.5 (4) |
C7—C8—H8 | 119.9 | C20—C19—S2B | 118.3 (2) |
C10—C9—C8 | 120.2 (3) | C20—C19—H19 | 127.3 |
C10—C9—H9 | 119.9 | C18A—C19—H19 | 127.3 |
C8—C9—H9 | 119.9 | S2B—C19—H19 | 114.4 |
C9—C10—C5 | 120.7 (3) | C19—C20—C18B | 104.1 (4) |
C9—C10—H10 | 119.7 | C19—C20—S2A | 117.1 (2) |
C5—C10—H10 | 119.7 | C19—C20—H20 | 121.4 |
N4—C11—C12 | 117.1 (2) | C18B—C20—H20 | 134.4 |
N4—C11—H11 | 121.4 | S2A—C20—H20 | 121.4 |
C12—C11—H11 | 121.4 | ||
C1—N1—N2—C2 | 3.8 (3) | C11—C12—C13—C14 | −179.8 (3) |
C1—N1—N2—C3 | 172.3 (2) | S1—C12—C13—C14 | 0.3 (3) |
C1—N3—N4—C11 | 176.5 (2) | C12—C13—C14—C15 | 0.1 (4) |
C2—N3—N4—C11 | −11.2 (4) | C13—C14—C15—S1 | −0.5 (4) |
N2—N1—C1—N3 | −2.0 (3) | C12—S1—C15—C14 | 0.6 (3) |
N2—N1—C1—C16 | −179.3 (3) | N1—C1—C16—C17 | 107.3 (3) |
N4—N3—C1—N1 | 173.8 (2) | N3—C1—C16—C17 | −69.8 (3) |
C2—N3—C1—N1 | −0.2 (3) | C1—C16—C17—C18A | −29.9 (4) |
N4—N3—C1—C16 | −8.8 (4) | C1—C16—C17—C18B | 146.2 (2) |
C2—N3—C1—C16 | 177.2 (2) | C1—C16—C17—S2B | −32.7 (4) |
N1—N2—C2—O1 | 177.2 (3) | C1—C16—C17—S2A | 149.2 (2) |
C3—N2—C2—O1 | 9.5 (5) | C18A—C17—S2A—C20 | 0.72 (9) |
N1—N2—C2—N3 | −3.8 (3) | C18B—C17—S2A—C20 | −19 (2) |
C3—N2—C2—N3 | −171.4 (2) | C16—C17—S2A—C20 | −178.5 (3) |
N4—N3—C2—O1 | 8.5 (5) | S2B—C17—S2A—C20 | 3.2 (2) |
C1—N3—C2—O1 | −178.6 (3) | C18B—C17—C18A—C19 | 2.5 (2) |
N4—N3—C2—N2 | −170.6 (2) | C16—C17—C18A—C19 | 179.5 (3) |
C1—N3—C2—N2 | 2.4 (3) | S2B—C17—C18A—C19 | −158 (2) |
C2—N2—C3—C4 | 72.9 (3) | S2A—C17—C18A—C19 | 0.31 (12) |
N1—N2—C3—C4 | −94.1 (3) | C18A—C17—S2B—C19 | 19 (2) |
N2—C3—C4—O2 | −4.8 (4) | C18B—C17—S2B—C19 | −0.80 (10) |
N2—C3—C4—C5 | 176.1 (2) | C16—C17—S2B—C19 | 178.3 (3) |
O2—C4—C5—C6 | −178.9 (3) | S2A—C17—S2B—C19 | −3.4 (2) |
C3—C4—C5—C6 | 0.3 (4) | C18A—C17—C18B—C20 | −2.7 (2) |
O2—C4—C5—C10 | 1.6 (4) | C16—C17—C18B—C20 | −179.6 (3) |
C3—C4—C5—C10 | −179.3 (2) | S2B—C17—C18B—C20 | −0.60 (12) |
C10—C5—C6—C7 | −1.1 (4) | S2A—C17—C18B—C20 | 158 (2) |
C4—C5—C6—C7 | 179.3 (3) | C17—C18A—C19—C20 | −1.4 (2) |
C5—C6—C7—C8 | 1.3 (5) | C17—C18A—C19—S2B | 169.1 (9) |
C6—C7—C8—C9 | 0.1 (5) | C17—S2B—C19—C20 | 2.3 (2) |
C7—C8—C9—C10 | −1.6 (5) | C17—S2B—C19—C18A | −8.0 (7) |
C8—C9—C10—C5 | 1.7 (5) | C18A—C19—C20—C18B | −0.31 (17) |
C6—C5—C10—C9 | −0.3 (4) | S2B—C19—C20—C18B | −2.7 (3) |
C4—C5—C10—C9 | 179.2 (3) | C18A—C19—C20—S2A | 2.0 (3) |
N3—N4—C11—C12 | 178.4 (2) | S2B—C19—C20—S2A | −0.4 (2) |
N4—C11—C12—C13 | 179.1 (3) | C17—C18B—C20—C19 | 2.0 (2) |
N4—C11—C12—S1 | −1.1 (3) | C17—C18B—C20—S2A | −168.8 (9) |
C15—S1—C12—C13 | −0.5 (2) | C17—S2A—C20—C19 | −1.8 (2) |
C15—S1—C12—C11 | 179.6 (2) | C17—S2A—C20—C18B | 8.2 (7) |
Experimental details
Crystal data | |
Chemical formula | C20H16N4O2S2 |
Mr | 408.49 |
Crystal system, space group | Monoclinic, C2/c |
Temperature (K) | 296 |
a, b, c (Å) | 25.287 (3), 5.5347 (4), 28.281 (2) |
β (°) | 102.430 (7) |
V (Å3) | 3865.2 (6) |
Z | 8 |
Radiation type | Mo Kα |
µ (mm−1) | 0.30 |
Crystal size (mm) | 0.80 × 0.37 × 0.14 |
Data collection | |
Diffractometer | Stoe IPDS II |
Absorption correction | Integration (X-RED32; Stoe & Cie, 2002) |
Tmin, Tmax | 0.776, 0.913 |
No. of measured, independent and observed [I > 2σ(I)] reflections | 20676, 3865, 2676 |
Rint | 0.037 |
(sin θ/λ)max (Å−1) | 0.621 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.049, 0.141, 1.05 |
No. of reflections | 3865 |
No. of parameters | 272 |
No. of restraints | 104 |
H-atom treatment | H-atom parameters constrained |
Δρmax, Δρmin (e Å−3) | 0.36, −0.31 |
Computer programs: X-AREA (Stoe & Cie, 2002), X-RED32 (Stoe & Cie, 2002), SHELXS97 (Sheldrick, 2008), SHELXL97 (Sheldrick, 2008), ORTEP-3 for Windows (Farrugia, 1997), WinGX (Farrugia, 1999).
Acknowledgements
This study was supported financially by the Research Center of Ondokuz Mayıs University (Project No. F-476). The authors acknowledge the Faculty of Arts and Sciences, Ondokuz Mayıs University, Turkey, for the use of the Stoe IPDS II diffractometer (purchased under grant No. F279 of the University Research Fund).
References
Akkurt, M., Öztürk Yıldırım, S., Bogdanov, M. G., Kandinska, M. I. & Büyükgüngör, O. (2008). Acta Cryst. E64, o1955–o1956. Web of Science CSD CrossRef IUCr Journals Google Scholar
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. CSD CrossRef Web of Science Google Scholar
Bernstein, J., Davies, R. E., Shimoni, L. & Chang, N.-L. (1995). Angew. Chem. Int. Ed. Engl. 34, 1555–1573. CrossRef CAS Web of Science Google Scholar
Chen, S. Y., Kao, C. & Laughton, C. A. (1997). J. Steroid Biochem. 61, 107–127. CrossRef CAS Google Scholar
Clemons, M., Colemon, R. E. & Verma, S. (2004). Cancer Treat. Rev. 30, 325–332. Web of Science CrossRef PubMed CAS Google Scholar
Collin, X., Sauleau, A. & Coulon, J. (2003). Bioorg. Med. Chem. 13, 2601–2605. CrossRef CAS Google Scholar
Farrugia, L. J. (1997). J. Appl. Cryst. 30, 565. CrossRef IUCr Journals Google Scholar
Farrugia, L. J. (1999). J. Appl. Cryst. 32, 837–838. CrossRef CAS IUCr Journals Google Scholar
Mohareb, M., Sherif, M., Gaber, M., Ghabrial, S. & Aziz, I. (2004). Heteroatom Chem. 15, 15–20. Web of Science CrossRef CAS Google Scholar
Santen, J. R. (2003). 68, 559-567. Web of Science CrossRef PubMed CAS Google Scholar
Sheldrick, G. M. (2008). Acta Cryst. A64, 112–122. Web of Science CrossRef CAS IUCr Journals Google Scholar
Stoe & Cie (2002). X-AREA and X-RED32. Stoe & Cie, Darmstadt, Germany. Google Scholar
Tanak, H., Köysal, Y., Yavuz, M., Işık, Ş. & Gül, G. (2009). Acta Cryst. E65, o3039. Web of Science CSD CrossRef IUCr Journals Google Scholar
Ünver, Y., Düğdü, E., Sancak, K., Er, M. & Karaoğlu, Ş. A. (2009). Turk. J. Chem. 33, 135–147. Google Scholar
Ustabaş, R., Ünver, Y., Suleymanoğlu, N., Çoruh, U. & Sancak, K. (2009). Acta Cryst. E65, o1006–o1007. Web of Science CSD CrossRef IUCr Journals Google Scholar
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.
1,2,4-triazole derivatives are known in the scientific literature for their wide pharmacological activity. Two main types of their activity are antiviral, antibacterial and antifungal activities, and central nervous system (CNS) activity. It was reported that compounds having triazole moieties such as Vorozole, Anastrozole and Letrozole appear to be very effective aromatase inhibitors very useful for preventing breast cancer (Ünver et al., 2009; Santen, 2003; Clemons et al., 2004). It is known that 1,2,4- triazol moieties interact strongly with heme iron, and aromatic substituents on the triazoles are very effective for interacting with the active site aromatase (Chen et al., 1997). Over recent years, there has been an increasing interest in the chemistry of thiophenes because of their biological significance. Many of them have been widely investigated for therapeutic uses, especially as antifungal, antibacterial, antiinflammatory, anticonvulsant, antiasthmatic, and analgesic agents. They also were known to show anti-HIV, antiproliferative, germicidal, and D2 dopaminergic activities (Mohareb et al., 2004). There are antimicrobial agents having different structures are frequently used in treatment of microbial infections. However, there is an increasing resistance to these drugs. Moreover, some of azole derivatives used as common antibiotics such as Amphotericin B posses a toxic effect on humans as well as their antimicrobial effects (Collin et al., 2003). To overcome the development of drug resistance, it is crucial to synthesize a new class of antimicrobials possessing different chemical properties from those of used commonly.
The molecular structure of the title compound (I) is shown in Figure 1. Within the molecule of (I), a flip-disorder of the thiophene ring containing S2 is observed. There are two positions of the thiophene ring, rotated by ca 180° about the single C16—C17 bond. These two orientations are not equivalent; the site-occupation factors refined to 0.710 (4) and 0.290 (4). All the bond lengths and angles of (I) are within normal ranges (Allen et al.,1987; Akkurt et al., 2008; Ustabaş et al., 2009). In (I), thiophene rings and benzyl ring are bridged by 1,2,4-triazole ring system. The dihedral angles between the triazole ring A (N1/N2/C2/N3/C1), the benzyl ring B (C5—C10), the thiophene rings C (C12/C13/C14/C15/S1), D (C17/C21/C20/C19/S2), and E (C17/C18/C19/C20/S3) are 80.04 (14)° (A/B), 11.45 (15)° (A/C), 82.82 (17)° (A/D), 83.5 (2)° (A/E), 74.35 (15)° (B/C), 14.87 (17)° (B/D), 13.8 (2)° (B/E), 79.81 (17)° (C/D) and 80.2 (2)° (C/E). The torsion angles, (N3/N4/C11/C12) and (N2/C3/C4/C5) are 178.43 (19)° and 176.08 (19)°, shows that for the title compound, the side chain conformation induced by anti-conformations, respectively. The interatomic distances within the triazole ring of (I) are not equal. The C1—N1 is double bond and shorter than the conjugated C1—N3 and C2—N3 bonds. The molecular geometry of the triazole ring is in agreement values with the structure 4-(2,3-dihidroxybenzylideneamino)-5-methyl-2H-1,2,4-triazole-3(4H)-one (Tanak et al., 2009).
The molecular structure is stabilized by C—H···O type hydrogen bond. An intramolecular hydrogen bond C11—H11···O1, forming rings with the graph set S(6) (Bernstein et al., 1995), details of which are given in Table 1.