organic compounds
Ethyl 7-chloromethyl-5-(2-chlorophenyl)-7-hydroxy-2-methylsulfanyl-4,5,6,7-tetrahydro-1,2,4-triazolo[1,5-a]pyrimidine-6-carboxylate
aKey Laboratory of Pesticides and Chemical Biology of the Ministry of Education, College of Chemistry, Central China Normal University, Wuhan 430079, People's Republic of China
*Correspondence e-mail: swhuang@mails.ccnu.edu.cn
In the title compound, C16H18Cl2N4O3S, the five-membered ring is almost planar [maximum deviation = 0.011 (3) Å] and the six-membered ring adopts an In the N—H⋯N, O—H⋯N and C—H⋯O interactions link molecules into a three-dimensional network.
Related literature
For general background to tetrahydro triazolo[1,5-a]pyrimidine derivatives as potential biologically active compounds, see: Pryadeina et al. (2004). For related structures, see: Chen et al. (2005); Hu et al. (2005). For bond-length data, see: Allen et al. (1987).
Experimental
Crystal data
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Data collection
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Refinement
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Data collection: SMART (Bruker, 2001); cell SAINT (Bruker, 2001); data reduction: SAINT; program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: PLATON (Spek, 2009); software used to prepare material for publication: SHELXTL (Sheldrick, 2008).
Supporting information
https://doi.org/10.1107/S1600536809039373/hb5113sup1.cif
contains datablocks I, global. DOI:Structure factors: contains datablock I. DOI: https://doi.org/10.1107/S1600536809039373/hb5113Isup2.hkl
A solution of 4-chloro acetylacetic ester (1 mmol), 2-chloro benzaldehyde (1 mmol), and 3-amino-5-methylthio-1,2,4-triazole (1mmol) in water (3 ml) containing a catalytic amount of TSA was heated under 353 K for 10 h. The resulting mixture was extracted with CH2Cl2 and the extra was dried over sodium sulfate, filtered, the filtrate was condensed under reduced pressure and the residue was purified by σ 7.03-7.40(m, 4 H), 6.42(s, 1H), 4.99(d, 1H), 4.35(d, 1H), 4.00(q,2 H), 3.91(d, 1H), 3.05(d, 1H), 2.35(s, 3H), 1.03(t,3H).
on SiO2 to afford the title compound. Colourless blocks of (I) were grown from an acetone solution at 293K. 1H NMR (CDCl3, 400 MHz):The N- and O-bound H atoms were located in a difference map and freely refined with fixed isotropic displacement parameters. All other H atoms were positioned geometrically, with C-H = 0.93, 0.97 and 0.96 Å for aromatic, methylene and methyl H, respectively, and constrained to ride on their parent atoms, with Uiso(H) = 1.2Ueq(C) or 1.5Ueq(methyl C).
In recent years, tetrahydro triazolo1,5-a]pyrimidine derivatives nave attracted interest as potential biologically active compounds (Pryadeina et al., 2004). In this paper, we present the structure of one such analogue, the title compound, (I) (Fig. 1), in which the bond lengths (Allen et al., 1987) and angles are within normal ranges.
The bicyclic triazolopyrimidine system is not on the same plane because they can not form a
Ring A (N2-4/C14-15) is close to planarity with a maximum deviation of 0.011Å for C15. Rng B (N1-2/C7-8/C12/C14) dopt envelope conformations with atom C8 displaced by 0.333 (3) Å from the plane of the other ring atoms. The dihedral angle between the Ring (C1-C6) and the ring A is 51.86°.In the
weak N-H···N, O-H···N and C-H···O interactions link the molecules into a three-dimensional network (Fig. 2).For general background to tetrahydro triazolo[1,5-a]pyrimidine derivatives as potential biologically active compounds, see: Pryadeina et al. (2004). For related structures, see: Chen et al. (2005); Hu et al. (2005). For bond-length data, see: Allen et al. (1987).
Data collection: SMART (Bruker, 2001); cell
SAINT (Bruker, 2001); data reduction: SAINT (Bruker, 2001); program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: PLATON (Spek, 2009); software used to prepare material for publication: SHELXTL (Sheldrick, 2008).C16H18Cl2N4O3S | Z = 2 |
Mr = 417.30 | F(000) = 432 |
Triclinic, P1 | Dx = 1.430 Mg m−3 |
Hall symbol: -P 1 | Mo Kα radiation, λ = 0.71073 Å |
a = 8.4534 (14) Å | Cell parameters from 2018 reflections |
b = 10.5082 (17) Å | θ = 2.5–24.1° |
c = 12.0846 (19) Å | µ = 0.47 mm−1 |
α = 66.660 (3)° | T = 292 K |
β = 79.519 (3)° | Block, colourless |
γ = 84.795 (3)° | 0.30 × 0.20 × 0.10 mm |
V = 969.0 (3) Å3 |
Bruker SMART 4K CCD diffractometer | 2661 reflections with I > 2σ(I) |
Radiation source: fine-focus sealed tube | Rint = 0.025 |
Graphite monochromator | θmax = 26.0°, θmin = 1.9° |
φ and ω scans | h = −10→10 |
6772 measured reflections | k = −12→12 |
3759 independent 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)] = 0.053 | Hydrogen site location: inferred from neighbouring sites |
wR(F2) = 0.141 | H atoms treated by a mixture of independent and constrained refinement |
S = 1.08 | w = 1/[σ2(Fo2) + (0.07P)2] where P = (Fo2 + 2Fc2)/3 |
3759 reflections | (Δ/σ)max = 0.001 |
249 parameters | Δρmax = 0.43 e Å−3 |
0 restraints | Δρmin = −0.33 e Å−3 |
C16H18Cl2N4O3S | γ = 84.795 (3)° |
Mr = 417.30 | V = 969.0 (3) Å3 |
Triclinic, P1 | Z = 2 |
a = 8.4534 (14) Å | Mo Kα radiation |
b = 10.5082 (17) Å | µ = 0.47 mm−1 |
c = 12.0846 (19) Å | T = 292 K |
α = 66.660 (3)° | 0.30 × 0.20 × 0.10 mm |
β = 79.519 (3)° |
Bruker SMART 4K CCD diffractometer | 2661 reflections with I > 2σ(I) |
6772 measured reflections | Rint = 0.025 |
3759 independent reflections |
R[F2 > 2σ(F2)] = 0.053 | 0 restraints |
wR(F2) = 0.141 | H atoms treated by a mixture of independent and constrained refinement |
S = 1.08 | Δρmax = 0.43 e Å−3 |
3759 reflections | Δρmin = −0.33 e Å−3 |
249 parameters |
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 | ||
Cl1 | 0.68839 (13) | 0.60065 (10) | 0.98954 (7) | 0.0933 (4) | |
Cl2 | 0.60921 (11) | 0.36582 (8) | 0.66235 (7) | 0.0709 (3) | |
S1 | 1.08176 (11) | 0.90864 (8) | 0.17205 (6) | 0.0681 (3) | |
C1 | 0.6041 (4) | 0.7582 (3) | 0.9073 (2) | 0.0571 (8) | |
C2 | 0.4887 (4) | 0.8210 (4) | 0.9701 (3) | 0.0747 (10) | |
H2 | 0.4601 | 0.7782 | 1.0543 | 0.090* | |
C3 | 0.4181 (4) | 0.9457 (4) | 0.9068 (3) | 0.0775 (11) | |
H3 | 0.3413 | 0.9870 | 0.9483 | 0.093* | |
C4 | 0.4602 (4) | 1.0087 (3) | 0.7840 (3) | 0.0684 (9) | |
H4 | 0.4126 | 1.0933 | 0.7415 | 0.082* | |
C5 | 0.5738 (3) | 0.9472 (3) | 0.7221 (2) | 0.0510 (7) | |
H5 | 0.6018 | 0.9919 | 0.6380 | 0.061* | |
C6 | 0.6471 (3) | 0.8217 (3) | 0.7812 (2) | 0.0414 (6) | |
C7 | 0.7640 (3) | 0.7517 (2) | 0.7107 (2) | 0.0382 (6) | |
H7 | 0.835 (3) | 0.694 (3) | 0.758 (2) | 0.046* | |
C8 | 0.6777 (3) | 0.6492 (2) | 0.6789 (2) | 0.0351 (5) | |
H8 | 0.645 (3) | 0.574 (2) | 0.755 (2) | 0.042* | |
C9 | 0.5292 (3) | 0.7157 (3) | 0.6256 (2) | 0.0441 (6) | |
C10 | 0.2503 (4) | 0.7571 (4) | 0.6852 (3) | 0.0809 (11) | |
H10A | 0.1955 | 0.7190 | 0.6417 | 0.097* | |
H10B | 0.2709 | 0.8541 | 0.6349 | 0.097* | |
C11 | 0.1517 (4) | 0.7428 (4) | 0.8024 (3) | 0.0821 (11) | |
H11A | 0.1188 | 0.6484 | 0.8461 | 0.123* | |
H11B | 0.0582 | 0.8025 | 0.7881 | 0.123* | |
H11C | 0.2133 | 0.7680 | 0.8496 | 0.123* | |
C12 | 0.7963 (3) | 0.5897 (2) | 0.5979 (2) | 0.0369 (6) | |
C13 | 0.7175 (3) | 0.5062 (3) | 0.5449 (2) | 0.0461 (6) | |
H13A | 0.7998 | 0.4709 | 0.4964 | 0.055* | |
H13B | 0.6449 | 0.5662 | 0.4916 | 0.055* | |
C14 | 0.8996 (3) | 0.8292 (2) | 0.5003 (2) | 0.0395 (6) | |
C15 | 0.9936 (3) | 0.8369 (3) | 0.3248 (2) | 0.0441 (6) | |
C16 | 1.0255 (5) | 0.7895 (3) | 0.1151 (3) | 0.0830 (11) | |
H16A | 1.0832 | 0.7033 | 0.1477 | 0.125* | |
H16B | 1.0510 | 0.8271 | 0.0276 | 0.125* | |
H16C | 0.9119 | 0.7740 | 0.1392 | 0.125* | |
N1 | 0.8465 (3) | 0.8568 (2) | 0.59986 (19) | 0.0461 (6) | |
H1 | 0.894 (3) | 0.929 (3) | 0.608 (2) | 0.055* | |
N2 | 0.8708 (3) | 0.7083 (2) | 0.49519 (17) | 0.0410 (5) | |
N3 | 0.9342 (3) | 0.7110 (2) | 0.37947 (17) | 0.0417 (5) | |
N4 | 0.9794 (3) | 0.9135 (2) | 0.39433 (17) | 0.0441 (5) | |
O1 | 0.5267 (3) | 0.7939 (2) | 0.52207 (17) | 0.0682 (6) | |
O2 | 0.4005 (2) | 0.6814 (2) | 0.71234 (18) | 0.0611 (6) | |
O3 | 0.9120 (2) | 0.51348 (18) | 0.66938 (16) | 0.0448 (5) | |
H3A | 0.953 (4) | 0.458 (3) | 0.647 (3) | 0.067* |
U11 | U22 | U33 | U12 | U13 | U23 | |
Cl1 | 0.1212 (8) | 0.0852 (7) | 0.0451 (5) | −0.0024 (6) | −0.0173 (5) | 0.0064 (4) |
Cl2 | 0.0932 (6) | 0.0500 (5) | 0.0662 (5) | −0.0327 (4) | −0.0159 (4) | −0.0111 (4) |
S1 | 0.1055 (7) | 0.0475 (5) | 0.0361 (4) | −0.0024 (4) | 0.0124 (4) | −0.0101 (3) |
C1 | 0.073 (2) | 0.0615 (19) | 0.0356 (14) | −0.0172 (16) | 0.0008 (14) | −0.0183 (13) |
C2 | 0.084 (2) | 0.101 (3) | 0.0403 (16) | −0.028 (2) | 0.0177 (16) | −0.0353 (18) |
C3 | 0.078 (2) | 0.087 (3) | 0.081 (2) | −0.019 (2) | 0.020 (2) | −0.056 (2) |
C4 | 0.068 (2) | 0.0568 (19) | 0.084 (2) | −0.0057 (16) | 0.0090 (18) | −0.0391 (17) |
C5 | 0.0643 (18) | 0.0407 (16) | 0.0465 (15) | −0.0049 (14) | 0.0028 (13) | −0.0194 (12) |
C6 | 0.0477 (15) | 0.0436 (15) | 0.0343 (13) | −0.0110 (12) | 0.0024 (11) | −0.0184 (11) |
C7 | 0.0433 (15) | 0.0344 (13) | 0.0332 (12) | −0.0019 (11) | −0.0027 (11) | −0.0104 (10) |
C8 | 0.0390 (14) | 0.0291 (12) | 0.0315 (12) | −0.0017 (10) | −0.0041 (10) | −0.0063 (10) |
C9 | 0.0513 (16) | 0.0398 (15) | 0.0434 (15) | 0.0048 (12) | −0.0119 (13) | −0.0179 (12) |
C10 | 0.052 (2) | 0.107 (3) | 0.089 (3) | 0.030 (2) | −0.0287 (18) | −0.043 (2) |
C11 | 0.051 (2) | 0.096 (3) | 0.109 (3) | 0.0175 (19) | −0.021 (2) | −0.051 (2) |
C12 | 0.0450 (14) | 0.0256 (12) | 0.0385 (13) | −0.0016 (10) | −0.0073 (11) | −0.0102 (10) |
C13 | 0.0582 (17) | 0.0355 (14) | 0.0434 (14) | −0.0058 (12) | −0.0109 (12) | −0.0117 (11) |
C14 | 0.0477 (15) | 0.0316 (13) | 0.0369 (13) | −0.0033 (11) | 0.0007 (11) | −0.0136 (10) |
C15 | 0.0556 (16) | 0.0331 (14) | 0.0355 (13) | 0.0054 (12) | 0.0031 (11) | −0.0107 (11) |
C16 | 0.141 (3) | 0.067 (2) | 0.0378 (16) | 0.008 (2) | −0.0113 (18) | −0.0201 (15) |
N1 | 0.0583 (14) | 0.0386 (12) | 0.0421 (12) | −0.0177 (11) | 0.0107 (10) | −0.0208 (10) |
N2 | 0.0537 (13) | 0.0327 (11) | 0.0351 (11) | −0.0054 (10) | 0.0035 (9) | −0.0150 (8) |
N3 | 0.0580 (14) | 0.0316 (11) | 0.0339 (11) | 0.0016 (10) | −0.0019 (9) | −0.0138 (9) |
N4 | 0.0567 (14) | 0.0328 (11) | 0.0374 (11) | −0.0029 (10) | 0.0074 (10) | −0.0137 (9) |
O1 | 0.0783 (15) | 0.0711 (14) | 0.0463 (12) | 0.0242 (12) | −0.0219 (10) | −0.0138 (10) |
O2 | 0.0390 (11) | 0.0711 (14) | 0.0615 (12) | 0.0076 (10) | −0.0113 (9) | −0.0140 (10) |
O3 | 0.0513 (11) | 0.0359 (10) | 0.0513 (11) | 0.0109 (8) | −0.0149 (9) | −0.0207 (8) |
Cl1—C1 | 1.725 (3) | C10—O2 | 1.454 (3) |
Cl2—C13 | 1.773 (2) | C10—C11 | 1.465 (5) |
S1—C15 | 1.740 (2) | C10—H10A | 0.9700 |
S1—C16 | 1.783 (4) | C10—H10B | 0.9700 |
C1—C6 | 1.392 (3) | C11—H11A | 0.9600 |
C1—C2 | 1.404 (4) | C11—H11B | 0.9600 |
C2—C3 | 1.374 (5) | C11—H11C | 0.9600 |
C2—H2 | 0.9300 | C12—O3 | 1.401 (3) |
C3—C4 | 1.356 (4) | C12—N2 | 1.456 (3) |
C3—H3 | 0.9300 | C12—C13 | 1.526 (3) |
C4—C5 | 1.381 (4) | C13—H13A | 0.9700 |
C4—H4 | 0.9300 | C13—H13B | 0.9700 |
C5—C6 | 1.378 (4) | C14—N4 | 1.332 (3) |
C5—H5 | 0.9300 | C14—N1 | 1.337 (3) |
C6—C7 | 1.517 (4) | C14—N2 | 1.342 (3) |
C7—N1 | 1.458 (3) | C15—N3 | 1.321 (3) |
C7—C8 | 1.554 (3) | C15—N4 | 1.360 (3) |
C7—H7 | 0.92 (3) | C16—H16A | 0.9600 |
C8—C9 | 1.502 (3) | C16—H16B | 0.9600 |
C8—C12 | 1.539 (3) | C16—H16C | 0.9600 |
C8—H8 | 0.96 (2) | N1—H1 | 0.93 (3) |
C9—O1 | 1.198 (3) | N2—N3 | 1.393 (3) |
C9—O2 | 1.329 (3) | O3—H3A | 0.77 (3) |
C15—S1—C16 | 101.76 (14) | C10—C11—H11A | 109.5 |
C6—C1—C2 | 120.3 (3) | C10—C11—H11B | 109.5 |
C6—C1—Cl1 | 121.1 (2) | H11A—C11—H11B | 109.5 |
C2—C1—Cl1 | 118.6 (2) | C10—C11—H11C | 109.5 |
C3—C2—C1 | 119.9 (3) | H11A—C11—H11C | 109.5 |
C3—C2—H2 | 120.0 | H11B—C11—H11C | 109.5 |
C1—C2—H2 | 120.0 | O3—C12—N2 | 109.8 (2) |
C4—C3—C2 | 120.2 (3) | O3—C12—C13 | 113.3 (2) |
C4—C3—H3 | 119.9 | N2—C12—C13 | 107.02 (19) |
C2—C3—H3 | 119.9 | O3—C12—C8 | 105.82 (18) |
C3—C4—C5 | 120.0 (3) | N2—C12—C8 | 106.35 (18) |
C3—C4—H4 | 120.0 | C13—C12—C8 | 114.3 (2) |
C5—C4—H4 | 120.0 | C12—C13—Cl2 | 111.07 (17) |
C6—C5—C4 | 122.1 (3) | C12—C13—H13A | 109.4 |
C6—C5—H5 | 119.0 | Cl2—C13—H13A | 109.4 |
C4—C5—H5 | 119.0 | C12—C13—H13B | 109.4 |
C5—C6—C1 | 117.5 (2) | Cl2—C13—H13B | 109.4 |
C5—C6—C7 | 121.2 (2) | H13A—C13—H13B | 108.0 |
C1—C6—C7 | 121.2 (2) | N4—C14—N1 | 127.2 (2) |
N1—C7—C6 | 109.5 (2) | N4—C14—N2 | 110.8 (2) |
N1—C7—C8 | 110.5 (2) | N1—C14—N2 | 121.9 (2) |
C6—C7—C8 | 111.7 (2) | N3—C15—N4 | 116.1 (2) |
N1—C7—H7 | 112.1 (16) | N3—C15—S1 | 124.2 (2) |
C6—C7—H7 | 111.0 (16) | N4—C15—S1 | 119.66 (19) |
C8—C7—H7 | 101.9 (16) | S1—C16—H16A | 109.5 |
C9—C8—C12 | 113.9 (2) | S1—C16—H16B | 109.5 |
C9—C8—C7 | 110.8 (2) | H16A—C16—H16B | 109.5 |
C12—C8—C7 | 110.40 (19) | S1—C16—H16C | 109.5 |
C9—C8—H8 | 108.1 (15) | H16A—C16—H16C | 109.5 |
C12—C8—H8 | 107.5 (14) | H16B—C16—H16C | 109.5 |
C7—C8—H8 | 105.7 (14) | C14—N1—C7 | 120.7 (2) |
O1—C9—O2 | 124.5 (3) | C14—N1—H1 | 118.2 (17) |
O1—C9—C8 | 125.5 (3) | C7—N1—H1 | 117.4 (16) |
O2—C9—C8 | 109.9 (2) | C14—N2—N3 | 109.23 (18) |
O2—C10—C11 | 107.0 (3) | C14—N2—C12 | 124.9 (2) |
O2—C10—H10A | 110.3 | N3—N2—C12 | 125.74 (19) |
C11—C10—H10A | 110.3 | C15—N3—N2 | 101.43 (19) |
O2—C10—H10B | 110.3 | C14—N4—C15 | 102.3 (2) |
C11—C10—H10B | 110.3 | C9—O2—C10 | 118.2 (2) |
H10A—C10—H10B | 108.6 | C12—O3—H3A | 111 (2) |
C6—C1—C2—C3 | −0.1 (5) | N2—C12—C13—Cl2 | −175.47 (17) |
Cl1—C1—C2—C3 | −179.3 (3) | C8—C12—C13—Cl2 | −58.0 (2) |
C1—C2—C3—C4 | −0.4 (5) | C16—S1—C15—N3 | 12.5 (3) |
C2—C3—C4—C5 | 0.3 (5) | C16—S1—C15—N4 | −165.8 (2) |
C3—C4—C5—C6 | 0.3 (5) | N4—C14—N1—C7 | −178.5 (2) |
C4—C5—C6—C1 | −0.7 (4) | N2—C14—N1—C7 | 4.3 (4) |
C4—C5—C6—C7 | 176.2 (3) | C6—C7—N1—C14 | −151.3 (2) |
C2—C1—C6—C5 | 0.6 (4) | C8—C7—N1—C14 | −27.9 (3) |
Cl1—C1—C6—C5 | 179.8 (2) | N4—C14—N2—N3 | −0.1 (3) |
C2—C1—C6—C7 | −176.3 (3) | N1—C14—N2—N3 | 177.5 (2) |
Cl1—C1—C6—C7 | 2.8 (4) | N4—C14—N2—C12 | 175.4 (2) |
C5—C6—C7—N1 | 30.3 (3) | N1—C14—N2—C12 | −7.0 (4) |
C1—C6—C7—N1 | −152.8 (2) | O3—C12—N2—C14 | −82.2 (3) |
C5—C6—C7—C8 | −92.4 (3) | C13—C12—N2—C14 | 154.4 (2) |
C1—C6—C7—C8 | 84.5 (3) | C8—C12—N2—C14 | 31.9 (3) |
N1—C7—C8—C9 | −74.3 (3) | O3—C12—N2—N3 | 92.6 (3) |
C6—C7—C8—C9 | 47.9 (3) | C13—C12—N2—N3 | −30.8 (3) |
N1—C7—C8—C12 | 52.8 (3) | C8—C12—N2—N3 | −153.3 (2) |
C6—C7—C8—C12 | 175.02 (19) | N4—C15—N3—N2 | 1.9 (3) |
C12—C8—C9—O1 | −45.3 (3) | S1—C15—N3—N2 | −176.39 (19) |
C7—C8—C9—O1 | 79.9 (3) | C14—N2—N3—C15 | −1.1 (3) |
C12—C8—C9—O2 | 138.4 (2) | C12—N2—N3—C15 | −176.5 (2) |
C7—C8—C9—O2 | −96.4 (2) | N1—C14—N4—C15 | −176.3 (3) |
C9—C8—C12—O3 | −170.66 (19) | N2—C14—N4—C15 | 1.2 (3) |
C7—C8—C12—O3 | 64.0 (2) | N3—C15—N4—C14 | −2.0 (3) |
C9—C8—C12—N2 | 72.6 (2) | S1—C15—N4—C14 | 176.38 (19) |
C7—C8—C12—N2 | −52.8 (2) | O1—C9—O2—C10 | −8.7 (4) |
C9—C8—C12—C13 | −45.3 (3) | C8—C9—O2—C10 | 167.6 (3) |
C7—C8—C12—C13 | −170.64 (19) | C11—C10—O2—C9 | −157.3 (3) |
O3—C12—C13—Cl2 | 63.3 (3) |
D—H···A | D—H | H···A | D···A | D—H···A |
N1—H1···N4i | 0.93 (3) | 2.04 (3) | 2.969 (3) | 172 (2) |
O3—H3A···N3ii | 0.77 (3) | 2.05 (3) | 2.806 (3) | 170 (3) |
C16—H16A···O3ii | 0.96 | 2.47 | 3.290 (4) | 143 |
Symmetry codes: (i) −x+2, −y+2, −z+1; (ii) −x+2, −y+1, −z+1. |
Experimental details
Crystal data | |
Chemical formula | C16H18Cl2N4O3S |
Mr | 417.30 |
Crystal system, space group | Triclinic, P1 |
Temperature (K) | 292 |
a, b, c (Å) | 8.4534 (14), 10.5082 (17), 12.0846 (19) |
α, β, γ (°) | 66.660 (3), 79.519 (3), 84.795 (3) |
V (Å3) | 969.0 (3) |
Z | 2 |
Radiation type | Mo Kα |
µ (mm−1) | 0.47 |
Crystal size (mm) | 0.30 × 0.20 × 0.10 |
Data collection | |
Diffractometer | Bruker SMART 4K CCD |
Absorption correction | – |
No. of measured, independent and observed [I > 2σ(I)] reflections | 6772, 3759, 2661 |
Rint | 0.025 |
(sin θ/λ)max (Å−1) | 0.617 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.053, 0.141, 1.08 |
No. of reflections | 3759 |
No. of parameters | 249 |
H-atom treatment | H atoms treated by a mixture of independent and constrained refinement |
Δρmax, Δρmin (e Å−3) | 0.43, −0.33 |
Computer programs: SMART (Bruker, 2001), SAINT (Bruker, 2001), SHELXS97 (Sheldrick, 2008), SHELXL97 (Sheldrick, 2008), PLATON (Spek, 2009), SHELXTL (Sheldrick, 2008).
D—H···A | D—H | H···A | D···A | D—H···A |
N1—H1···N4i | 0.93 (3) | 2.04 (3) | 2.969 (3) | 172 (2) |
O3—H3A···N3ii | 0.77 (3) | 2.05 (3) | 2.806 (3) | 170 (3) |
C16—H16A···O3ii | 0.96 | 2.47 | 3.290 (4) | 143 |
Symmetry codes: (i) −x+2, −y+2, −z+1; (ii) −x+2, −y+1, −z+1. |
Acknowledgements
The authors acknowledge financial support from the National Natural Science Foundation of China (grant No. 20702018).
References
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
Bruker (2001). SMART and SAINT. Bruker AXS Inc., Madison, Wisconsin, USA. Google Scholar
Chen, Q., Wu, Q.-Y., Hu, X.-W. & Yang, G.-F. (2005). Acta Cryst. E61, o2079–o2080. Web of Science CSD CrossRef IUCr Journals Google Scholar
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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.
In recent years, tetrahydro triazolo1,5-a]pyrimidine derivatives nave attracted interest as potential biologically active compounds (Pryadeina et al., 2004). In this paper, we present the structure of one such analogue, the title compound, (I) (Fig. 1), in which the bond lengths (Allen et al., 1987) and angles are within normal ranges.
The bicyclic triazolopyrimidine system is not on the same plane because they can not form a conjugated system. Ring A (N2-4/C14-15) is close to planarity with a maximum deviation of 0.011Å for C15. Rng B (N1-2/C7-8/C12/C14) dopt envelope conformations with atom C8 displaced by 0.333 (3) Å from the plane of the other ring atoms. The dihedral angle between the Ring (C1-C6) and the ring A is 51.86°.
In the crystal structure, weak N-H···N, O-H···N and C-H···O interactions link the molecules into a three-dimensional network (Fig. 2).