organic compounds
2-[(Cyclohex-3-en-1-ylmethoxy)methyl]-6-phenyl-1,2,4-triazine-3,5(2H,4H)-dione
aDepartment of Pharmaceutical Chemistry, College of Pharmacy, King Saud University, Riyadh 11451, Saudi Arabia, bDepartment of Chemistry, Faculty of Science, Tanta University, Tanta 31527, Egypt, cDepartment of Chemistry, University of Malaya, 50603 Kuala Lumpur, Malaysia, and dChemistry Department, Faculty of Science, King Abdulaziz University, PO Box 80203 Jeddah, Saudi Arabia
*Correspondence e-mail: edward.tiekink@gmail.com
In the title 1,2,4-triazine derivative, C17H19N3O3, the heterocyclic ring is planar (r.m.s. deviation = 0.040 Å) and effectively coplanar with the adjacent phenyl ring [dihedral angle = 4.5 (2)°] but almost perpendicular to the (cyclohex-3-en-1-ylmethoxy)methyl residue [N—N—C—O torsion angle = 71.6 (5)°], so that the molecule has an `L' shape. Supramolecular chains along [001] are formed in the crystal via N—H⋯O hydrogen bonds where the acceptor O atom is the ether O atom. The adjacent carbonyl O atom forms a complementary C—H⋯O contact resulting in the formation of a seven-membered {⋯HNCO⋯HCO} heterosynthon; the second carbonyl O atom forms an intramolecular C—H⋯O contact. Chains are connected into a supramolecular layer in the ac plane by π–π interactions [ring centroid–centroid distance = 3.488 (3) Å]. The central atom in the –CH2CH2C(H)= residue of the cyclohexene ring is disordered over two sites, with the major component having a site-occupancy factor of 0.51 (2).
Related literature
For the potential medicinal applications of 1,2,4-triazines, see: Ban et al. (2010); Irannejad et al. (2010); Sangshetti & Shinde (2010). For the synthesis, see: El-Brollosy (2008).
Experimental
Crystal data
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Refinement
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Data collection: CrysAlis PRO (Agilent, 2011); cell CrysAlis PRO; data reduction: CrysAlis PRO; program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: ORTEP-3 (Farrugia, 1997) and DIAMOND (Brandenburg, 2006); software used to prepare material for publication: publCIF (Westrip, 2010).
Supporting information
10.1107/S1600536812021198/su2425sup1.cif
contains datablocks global, I. DOI:Structure factors: contains datablock I. DOI: 10.1107/S1600536812021198/su2425Isup2.hkl
Supporting information file. DOI: 10.1107/S1600536812021198/su2425Isup3.cml
5-Phenyl-6-azauracil (0.189 g, 1 mmol) was stirred in dry acetonitrile (15 ml) under nitrogen and N,O-bis-trimethylsilylacetamide (0.87 ml, 3.5 mmol) was added. After a clear solution was obtained (10 min), the mixture was cooled to 223 K and trimethylsilyl trifluoromethanesulphonate (0.18 ml, 1 mmol) was added followed by the drop wise addition of bis(3-cyclohexen-1-ylmethoxy)methane (0.472 g, 2 mmol). The reaction mixture was stirred at room temperature for 5 h. The reaction was quenched by addition of sat. aq. NaHCO3 solution (5 ml). The mixture was evaporated under reduced pressure and the residue was extracted with ether (3 x 50 ml). The combined ether fractions were collected, dried (MgSO4) and evaporated under reduced pressure. The residue was purified on a silica gel column using 1:5 petroleum ether / chloroform to give the title compound in 64% (0.199 g) yield. Colourless crystals were obtained upon crystallization from its ethanol solution (El-Brollosy, 2008).
H-atoms were placed in calculated positions [N—H = 0.88 and C—H = 0.95 to 0.99 Å, Uiso(H) = 1.2Ueq(N,C)] and were included in the
in the riding model approximation. The amino H-atom was refined freely. In the absence of significant effects, 799 Friedel pairs were averaged in the final The C16 atom of the cyclohexene ring was disordered over two positions. From anisotropic the major component of the disorder had a site occupancy factor = 0.51 (2). The pairs of the respective C15—C16/C16'—C17 bond lengths were restrained to be within 0.01 Å of each other; the anisotropic displacement parameters for the disordered atoms were constrained to be equal.Data collection: CrysAlis PRO (Agilent, 2011); cell
CrysAlis PRO (Agilent, 2011); data reduction: CrysAlis PRO (Agilent, 2011); program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: ORTEP-3 (Farrugia, 1997) and DIAMOND (Brandenburg, 2006); software used to prepare material for publication: publCIF (Westrip, 2010).C17H19N3O3 | F(000) = 332 |
Mr = 313.35 | Dx = 1.367 Mg m−3 |
Monoclinic, Pc | Mo Kα radiation, λ = 0.71073 Å |
Hall symbol: P -2yc | Cell parameters from 801 reflections |
a = 4.7924 (6) Å | θ = 2.3–27.5° |
b = 13.7083 (19) Å | µ = 0.10 mm−1 |
c = 11.8293 (15) Å | T = 100 K |
β = 101.538 (12)° | Plate, colourless |
V = 761.43 (17) Å3 | 0.35 × 0.15 × 0.03 mm |
Z = 2 |
Agilent SuperNova Dual diffractometer with an Atlas detector | 1757 independent reflections |
Radiation source: SuperNova (Mo) X-ray Source | 1158 reflections with I > 2σ(I) |
Mirror monochromator | Rint = 0.078 |
Detector resolution: 10.4041 pixels mm-1 | θmax = 27.5°, θmin = 2.3° |
ω scan | h = −5→6 |
Absorption correction: multi-scan (CrysAlis PRO; Agilent, 2011) | k = −17→17 |
Tmin = 0.806, Tmax = 1.000 | l = −15→15 |
4230 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)] = 0.061 | Hydrogen site location: inferred from neighbouring sites |
wR(F2) = 0.133 | H-atom parameters constrained |
S = 1.04 | w = 1/[σ2(Fo2) + (0.0421P)2] where P = (Fo2 + 2Fc2)/3 |
1757 reflections | (Δ/σ)max = 0.002 |
212 parameters | Δρmax = 0.24 e Å−3 |
4 restraints | Δρmin = −0.30 e Å−3 |
C17H19N3O3 | V = 761.43 (17) Å3 |
Mr = 313.35 | Z = 2 |
Monoclinic, Pc | Mo Kα radiation |
a = 4.7924 (6) Å | µ = 0.10 mm−1 |
b = 13.7083 (19) Å | T = 100 K |
c = 11.8293 (15) Å | 0.35 × 0.15 × 0.03 mm |
β = 101.538 (12)° |
Agilent SuperNova Dual diffractometer with an Atlas detector | 1757 independent reflections |
Absorption correction: multi-scan (CrysAlis PRO; Agilent, 2011) | 1158 reflections with I > 2σ(I) |
Tmin = 0.806, Tmax = 1.000 | Rint = 0.078 |
4230 measured reflections |
R[F2 > 2σ(F2)] = 0.061 | 4 restraints |
wR(F2) = 0.133 | H-atom parameters constrained |
S = 1.04 | Δρmax = 0.24 e Å−3 |
1757 reflections | Δρmin = −0.30 e Å−3 |
212 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 | Occ. (<1) | |
O1 | 0.4970 (7) | 0.7062 (3) | 0.4998 (3) | 0.0321 (9) | |
O2 | 1.2011 (7) | 0.4812 (3) | 0.5519 (3) | 0.0245 (8) | |
O3 | 0.9583 (7) | 0.3645 (2) | 0.8023 (3) | 0.0228 (8) | |
N1 | 0.8476 (9) | 0.5948 (3) | 0.5278 (4) | 0.0205 (9) | |
H1 | 0.8696 | 0.6052 | 0.4567 | 0.025* | |
N2 | 0.9682 (7) | 0.5123 (3) | 0.7000 (3) | 0.0190 (10) | |
N3 | 0.7856 (7) | 0.5669 (3) | 0.7480 (3) | 0.0194 (9) | |
C1 | 0.4436 (9) | 0.6924 (4) | 0.7489 (4) | 0.0201 (11) | |
C2 | 0.2789 (10) | 0.7697 (4) | 0.6974 (5) | 0.0253 (12) | |
H2 | 0.2844 | 0.7872 | 0.6202 | 0.030* | |
C3 | 0.1041 (10) | 0.8224 (4) | 0.7579 (5) | 0.0275 (13) | |
H3 | −0.0072 | 0.8754 | 0.7221 | 0.033* | |
C4 | 0.0957 (11) | 0.7960 (4) | 0.8709 (5) | 0.0244 (12) | |
H4 | −0.0211 | 0.8315 | 0.9125 | 0.029* | |
C5 | 0.2553 (10) | 0.7192 (4) | 0.9223 (5) | 0.0260 (12) | |
H5 | 0.2458 | 0.7011 | 0.9989 | 0.031* | |
C6 | 0.4310 (11) | 0.6673 (4) | 0.8634 (5) | 0.0251 (12) | |
H6 | 0.5428 | 0.6148 | 0.9004 | 0.030* | |
C7 | 0.6321 (9) | 0.6348 (4) | 0.6886 (4) | 0.0205 (11) | |
C8 | 0.6423 (10) | 0.6503 (4) | 0.5652 (4) | 0.0209 (11) | |
C9 | 1.0207 (10) | 0.5252 (4) | 0.5896 (4) | 0.0185 (11) | |
C10 | 1.1326 (10) | 0.4421 (4) | 0.7787 (4) | 0.0217 (11) | |
H10A | 1.2888 | 0.4159 | 0.7441 | 0.026* | |
H10B | 1.2188 | 0.4752 | 0.8517 | 0.026* | |
C11 | 0.8986 (11) | 0.2912 (4) | 0.7141 (5) | 0.0252 (12) | |
H11A | 1.0778 | 0.2701 | 0.6920 | 0.030* | |
H11B | 0.7715 | 0.3182 | 0.6449 | 0.030* | |
C12 | 0.7570 (10) | 0.2050 (4) | 0.7590 (4) | 0.0221 (11) | |
H12 | 0.5764 | 0.2283 | 0.7801 | 0.027* | |
C13 | 0.6801 (13) | 0.1266 (4) | 0.6644 (5) | 0.0376 (14) | |
H13A | 0.5451 | 0.1545 | 0.5980 | 0.045* | |
H13B | 0.8544 | 0.1070 | 0.6373 | 0.045* | |
C14 | 0.5488 (12) | 0.0383 (4) | 0.7073 (6) | 0.0365 (14) | |
H14 | 0.4158 | −0.0003 | 0.6557 | 0.044* | |
C15 | 0.6234 (12) | 0.0133 (4) | 0.8234 (6) | 0.0360 (14) | |
H15 | 0.5694 | −0.0490 | 0.8468 | 0.043* | |
C16 | 0.779 (5) | 0.0777 (12) | 0.9093 (9) | 0.032 (5) | 0.51 (2) |
H16A | 0.9165 | 0.0382 | 0.9644 | 0.039* | 0.51 (2) |
H16B | 0.6429 | 0.1066 | 0.9529 | 0.039* | 0.51 (2) |
C16' | 0.837 (5) | 0.0637 (12) | 0.9049 (10) | 0.032 (5) | 0.49 |
H16C | 1.0033 | 0.0199 | 0.9266 | 0.039* | 0.49 (2) |
H16D | 0.7602 | 0.0758 | 0.9753 | 0.039* | 0.49 (2) |
C17 | 0.9405 (10) | 0.1602 (4) | 0.8654 (5) | 0.0253 (12) | |
H17A | 1.1188 | 0.1347 | 0.8463 | 0.030* | |
H17B | 0.9912 | 0.2105 | 0.9261 | 0.030* |
U11 | U22 | U33 | U12 | U13 | U23 | |
O1 | 0.032 (2) | 0.039 (2) | 0.026 (2) | 0.0098 (18) | 0.0082 (17) | 0.0077 (19) |
O2 | 0.0274 (18) | 0.027 (2) | 0.0197 (19) | 0.0025 (16) | 0.0073 (16) | −0.0009 (16) |
O3 | 0.032 (2) | 0.0200 (19) | 0.0175 (18) | −0.0002 (16) | 0.0074 (16) | −0.0005 (15) |
N1 | 0.028 (2) | 0.021 (2) | 0.014 (2) | 0.0002 (18) | 0.0081 (18) | 0.0006 (17) |
N2 | 0.024 (2) | 0.018 (2) | 0.015 (2) | 0.0027 (18) | 0.0042 (19) | −0.0017 (19) |
N3 | 0.016 (2) | 0.022 (2) | 0.021 (2) | −0.0021 (18) | 0.0038 (18) | −0.0020 (19) |
C1 | 0.017 (2) | 0.020 (3) | 0.023 (3) | −0.006 (2) | 0.004 (2) | −0.002 (2) |
C2 | 0.029 (3) | 0.024 (3) | 0.023 (3) | −0.007 (2) | 0.005 (2) | −0.002 (2) |
C3 | 0.022 (3) | 0.023 (3) | 0.037 (3) | 0.002 (2) | 0.005 (3) | −0.002 (3) |
C4 | 0.027 (3) | 0.022 (3) | 0.026 (3) | −0.003 (2) | 0.011 (2) | −0.008 (2) |
C5 | 0.025 (3) | 0.029 (3) | 0.025 (3) | −0.006 (2) | 0.008 (2) | −0.002 (2) |
C6 | 0.024 (3) | 0.026 (3) | 0.026 (3) | −0.005 (2) | 0.006 (2) | −0.001 (3) |
C7 | 0.017 (3) | 0.021 (3) | 0.023 (3) | −0.004 (2) | 0.004 (2) | 0.001 (2) |
C8 | 0.025 (3) | 0.021 (3) | 0.017 (3) | −0.002 (2) | 0.005 (2) | −0.001 (2) |
C9 | 0.022 (3) | 0.020 (3) | 0.014 (3) | −0.005 (2) | 0.004 (2) | 0.000 (2) |
C10 | 0.024 (3) | 0.021 (3) | 0.021 (3) | −0.005 (2) | 0.005 (2) | 0.002 (2) |
C11 | 0.035 (3) | 0.022 (3) | 0.019 (2) | −0.001 (2) | 0.005 (2) | −0.003 (2) |
C12 | 0.021 (2) | 0.021 (3) | 0.024 (3) | 0.003 (2) | 0.004 (2) | 0.001 (2) |
C13 | 0.047 (3) | 0.027 (3) | 0.033 (3) | −0.004 (3) | −0.006 (3) | −0.004 (3) |
C14 | 0.034 (3) | 0.030 (3) | 0.048 (4) | −0.011 (3) | 0.012 (3) | −0.011 (3) |
C15 | 0.033 (3) | 0.021 (3) | 0.053 (4) | −0.003 (3) | 0.007 (3) | 0.004 (3) |
C16 | 0.014 (8) | 0.029 (6) | 0.055 (5) | 0.013 (6) | 0.008 (4) | 0.012 (4) |
C16' | 0.014 (8) | 0.029 (6) | 0.055 (5) | 0.013 (6) | 0.008 (4) | 0.012 (4) |
C17 | 0.028 (3) | 0.022 (3) | 0.025 (3) | −0.002 (2) | 0.002 (2) | 0.005 (2) |
O1—C8 | 1.207 (6) | C10—H10A | 0.9900 |
O2—C9 | 1.210 (5) | C10—H10B | 0.9900 |
O3—C10 | 1.415 (6) | C11—C12 | 1.510 (7) |
O3—C11 | 1.435 (6) | C11—H11A | 0.9900 |
N1—C9 | 1.375 (6) | C11—H11B | 0.9900 |
N1—C8 | 1.385 (6) | C12—C17 | 1.514 (7) |
N1—H1 | 0.8800 | C12—C13 | 1.543 (8) |
N2—N3 | 1.359 (5) | C12—H12 | 1.0000 |
N2—C9 | 1.390 (5) | C13—C14 | 1.499 (8) |
N2—C10 | 1.456 (6) | C13—H13A | 0.9900 |
N3—C7 | 1.301 (6) | C13—H13B | 0.9900 |
C1—C2 | 1.387 (7) | C14—C15 | 1.390 (9) |
C1—C6 | 1.410 (7) | C14—H14 | 0.9500 |
C1—C7 | 1.486 (6) | C15—C16' | 1.435 (11) |
C2—C3 | 1.406 (7) | C15—C16 | 1.437 (11) |
C2—H2 | 0.9500 | C15—H15 | 0.9500 |
C3—C4 | 1.392 (7) | C16—C17 | 1.521 (9) |
C3—H3 | 0.9500 | C16—H16A | 0.9900 |
C4—C5 | 1.371 (7) | C16—H16B | 0.9900 |
C4—H4 | 0.9500 | C16'—C17 | 1.519 (10) |
C5—C6 | 1.391 (7) | C16'—H16C | 0.9900 |
C5—H5 | 0.9500 | C16'—H16D | 0.9900 |
C6—H6 | 0.9500 | C17—H17A | 0.9900 |
C7—C8 | 1.486 (6) | C17—H17B | 0.9900 |
C10—O3—C11 | 115.1 (3) | O3—C11—H11B | 109.8 |
C9—N1—C8 | 127.1 (4) | C12—C11—H11B | 109.8 |
C9—N1—H1 | 116.4 | H11A—C11—H11B | 108.3 |
C8—N1—H1 | 116.4 | C11—C12—C17 | 112.5 (4) |
N3—N2—C9 | 125.1 (4) | C11—C12—C13 | 110.4 (4) |
N3—N2—C10 | 114.1 (4) | C17—C12—C13 | 109.5 (4) |
C9—N2—C10 | 120.6 (4) | C11—C12—H12 | 108.1 |
C7—N3—N2 | 120.7 (4) | C17—C12—H12 | 108.1 |
C2—C1—C6 | 118.6 (5) | C13—C12—H12 | 108.1 |
C2—C1—C7 | 122.8 (4) | C14—C13—C12 | 111.9 (5) |
C6—C1—C7 | 118.6 (4) | C14—C13—H13A | 109.2 |
C1—C2—C3 | 120.9 (5) | C12—C13—H13A | 109.2 |
C1—C2—H2 | 119.6 | C14—C13—H13B | 109.2 |
C3—C2—H2 | 119.6 | C12—C13—H13B | 109.2 |
C4—C3—C2 | 119.3 (5) | H13A—C13—H13B | 107.9 |
C4—C3—H3 | 120.3 | C15—C14—C13 | 119.4 (5) |
C2—C3—H3 | 120.3 | C15—C14—H14 | 120.3 |
C5—C4—C3 | 120.3 (5) | C13—C14—H14 | 120.3 |
C5—C4—H4 | 119.9 | C14—C15—C16' | 123.6 (6) |
C3—C4—H4 | 119.9 | C14—C15—C16 | 122.8 (6) |
C4—C5—C6 | 120.7 (5) | C14—C15—H15 | 118.6 |
C4—C5—H5 | 119.6 | C16'—C15—H15 | 115.8 |
C6—C5—H5 | 119.6 | C16—C15—H15 | 118.6 |
C5—C6—C1 | 120.2 (5) | C15—C16—C17 | 116.2 (8) |
C5—C6—H6 | 119.9 | C15—C16—H16A | 108.2 |
C1—C6—H6 | 119.9 | C17—C16—H16A | 108.2 |
N3—C7—C1 | 117.0 (4) | C15—C16—H16B | 108.2 |
N3—C7—C8 | 120.4 (4) | C17—C16—H16B | 108.2 |
C1—C7—C8 | 122.6 (4) | H16A—C16—H16B | 107.4 |
O1—C8—N1 | 120.0 (4) | C15—C16'—C17 | 116.5 (8) |
O1—C8—C7 | 126.4 (5) | C15—C16'—H16C | 108.2 |
N1—C8—C7 | 113.6 (4) | C17—C16'—H16C | 108.2 |
O2—C9—N1 | 123.3 (4) | C15—C16'—H16D | 108.2 |
O2—C9—N2 | 124.0 (4) | C17—C16'—H16D | 108.2 |
N1—C9—N2 | 112.6 (4) | H16C—C16'—H16D | 107.3 |
O3—C10—N2 | 111.0 (4) | C16'—C17—C12 | 116.0 (7) |
O3—C10—H10A | 109.4 | C16—C17—C12 | 109.6 (8) |
N2—C10—H10A | 109.4 | C16'—C17—H17A | 96.5 |
O3—C10—H10B | 109.4 | C16—C17—H17A | 109.8 |
N2—C10—H10B | 109.4 | C12—C17—H17A | 109.7 |
H10A—C10—H10B | 108.0 | C16'—C17—H17B | 115.5 |
O3—C11—C12 | 109.3 (4) | C16—C17—H17B | 109.7 |
O3—C11—H11A | 109.8 | C12—C17—H17B | 109.7 |
C12—C11—H11A | 109.8 | H17A—C17—H17B | 108.2 |
C9—N2—N3—C7 | 3.3 (6) | N3—N2—C9—N1 | −5.5 (6) |
C10—N2—N3—C7 | 177.7 (4) | C10—N2—C9—N1 | −179.5 (4) |
C6—C1—C2—C3 | 0.4 (7) | C11—O3—C10—N2 | 79.3 (5) |
C7—C1—C2—C3 | −179.8 (5) | N3—N2—C10—O3 | 71.6 (5) |
C1—C2—C3—C4 | −0.4 (7) | C9—N2—C10—O3 | −113.8 (4) |
C2—C3—C4—C5 | −0.3 (8) | C10—O3—C11—C12 | 170.0 (4) |
C3—C4—C5—C6 | 1.0 (8) | O3—C11—C12—C17 | −59.4 (5) |
C4—C5—C6—C1 | −1.0 (7) | O3—C11—C12—C13 | 177.9 (4) |
C2—C1—C6—C5 | 0.3 (7) | C11—C12—C13—C14 | 177.9 (5) |
C7—C1—C6—C5 | −179.5 (4) | C17—C12—C13—C14 | 53.4 (6) |
N2—N3—C7—C1 | −178.5 (4) | C12—C13—C14—C15 | −29.4 (7) |
N2—N3—C7—C8 | 3.3 (7) | C13—C14—C15—C16' | −4.5 (16) |
C2—C1—C7—N3 | 177.0 (5) | C13—C14—C15—C16 | 12.3 (16) |
C6—C1—C7—N3 | −3.2 (6) | C14—C15—C16—C17 | −19 (3) |
C2—C1—C7—C8 | −4.9 (7) | C16'—C15—C16—C17 | 79 (3) |
C6—C1—C7—C8 | 174.9 (4) | C14—C15—C16'—C17 | 12 (3) |
C9—N1—C8—O1 | −177.0 (5) | C16—C15—C16'—C17 | −79 (3) |
C9—N1—C8—C7 | 4.6 (7) | C15—C16'—C17—C16 | 79 (3) |
N3—C7—C8—O1 | 174.8 (5) | C15—C16'—C17—C12 | 15 (2) |
C1—C7—C8—O1 | −3.2 (8) | C15—C16—C17—C16' | −78 (3) |
N3—C7—C8—N1 | −6.9 (6) | C15—C16—C17—C12 | 43 (2) |
C1—C7—C8—N1 | 175.1 (4) | C11—C12—C17—C16' | −170.4 (12) |
C8—N1—C9—O2 | −178.0 (5) | C13—C12—C17—C16' | −47.1 (12) |
C8—N1—C9—N2 | 1.1 (7) | C11—C12—C17—C16 | 177.0 (10) |
N3—N2—C9—O2 | 173.6 (4) | C13—C12—C17—C16 | −59.8 (11) |
C10—N2—C9—O2 | −0.4 (7) |
D—H···A | D—H | H···A | D···A | D—H···A |
N1—H1···O3i | 0.88 | 2.00 | 2.877 (5) | 174 |
C2—H2···O1 | 0.95 | 2.21 | 2.880 (7) | 127 |
C10—H10B···O2ii | 0.99 | 2.46 | 3.352 (6) | 150 |
Symmetry codes: (i) x, −y+1, z−1/2; (ii) x, −y+1, z+1/2. |
Experimental details
Crystal data | |
Chemical formula | C17H19N3O3 |
Mr | 313.35 |
Crystal system, space group | Monoclinic, Pc |
Temperature (K) | 100 |
a, b, c (Å) | 4.7924 (6), 13.7083 (19), 11.8293 (15) |
β (°) | 101.538 (12) |
V (Å3) | 761.43 (17) |
Z | 2 |
Radiation type | Mo Kα |
µ (mm−1) | 0.10 |
Crystal size (mm) | 0.35 × 0.15 × 0.03 |
Data collection | |
Diffractometer | Agilent SuperNova Dual diffractometer with an Atlas detector |
Absorption correction | Multi-scan (CrysAlis PRO; Agilent, 2011) |
Tmin, Tmax | 0.806, 1.000 |
No. of measured, independent and observed [I > 2σ(I)] reflections | 4230, 1757, 1158 |
Rint | 0.078 |
(sin θ/λ)max (Å−1) | 0.649 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.061, 0.133, 1.04 |
No. of reflections | 1757 |
No. of parameters | 212 |
No. of restraints | 4 |
H-atom treatment | H-atom parameters constrained |
Δρmax, Δρmin (e Å−3) | 0.24, −0.30 |
Computer programs: CrysAlis PRO (Agilent, 2011), SHELXS97 (Sheldrick, 2008), SHELXL97 (Sheldrick, 2008), ORTEP-3 (Farrugia, 1997) and DIAMOND (Brandenburg, 2006), publCIF (Westrip, 2010).
D—H···A | D—H | H···A | D···A | D—H···A |
N1—H1···O3i | 0.88 | 2.00 | 2.877 (5) | 174 |
C2—H2···O1 | 0.95 | 2.21 | 2.880 (7) | 127 |
C10—H10B···O2ii | 0.99 | 2.46 | 3.352 (6) | 150 |
Symmetry codes: (i) x, −y+1, z−1/2; (ii) x, −y+1, z+1/2. |
Footnotes
‡Additional correspondence author, e-mail: brollosy@yahoo.com.
Acknowledgements
The financial support of the Deanship of Scientific Research and the Research Center of the College of Pharmacy, King Saud University, is greatly appreciated. The authors also thank the Ministry of Higher Education (Malaysia) for funding structural studies through the High-Impact Research scheme (UM.C/HIR/MOHE/SC/12).
References
Agilent (2011). CrysAlis PRO. Agilent Technologies, Yarnton, Oxfordshire, England. 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.
Several 1,2,4-triazines have been shown to exhibit herbicidal, anti-viral, anti-microbial, anti-inflammatory, anti-malarial, anti-cancer, anti-proliferative and neuroprotective activities (Ban et al., 2010; Irannejad et al., 2010; Sangshetti & Shinde, 2010). The title compound (I), was originally synthesized as a potential anti-microbial agent (El-Brollosy, 2008). Herein, we describe the results of its crystal structure determination.
The six ring atoms comprising the 2,4-dihydro-1,2,4-triazine-3,5-dione residue in (I), Fig. 1, are co-planar with a r.m.s. = 0.040 Å; the maximum deviations from their least-squares plane being 0.035 (5) Å for the C7 atom and -0.039 (5) Å for the C8 atom. The dihedral angle between this ring and the attached phenyl ring of 4.5 (2)° is consistent with an almost co-planar relationship. The (cyclohex-3-en-1-ylmethoxy)methyl residue lies perpendicular to the rest of the molecule as seen in the value of the N3—N2—C10—O3 torsion angle of 71.6 (5)°, so that to a first approximation the molecule has an L-shape.
The crystal structure features supramolecular chains along [001]. These are mediated by, perhaps surprisingly, N—H···O hydrogen bonds where the O atom is the ether O atom, rather than carbonyl O atoms. The adjacent carbonyl-O2 atom forms a complementary C—H···O contact resulting in the formation of a seven-membered {···HNCO···HCO} heterosynthon, Fig. 2 and Table 1. The carbonyl-O1 atom forms an intramolecular C—H..O interaction. The chains are connected into supramolecular layers in the ac plane by π—π interactions [ring centroid(N1–N3,C7–C9)···centroid(C1–C6)i = 3.488 (3) Å and tilt angle = 4.5 (2)°; symmetry code: (i) x+1, y, z], Fig. 3. Supramolecular layers stack along the b axis with no specific interactions between them, Fig. 4.