organic compounds
3-Benzylamino-2-cyano-N-[N-(2-fluorophenyl)carbamoyl]-3-(methylsulfanyl)acrylamide
aCollege of Chemistry and Chemical Engineering, Hunan Normal University, Changsha 410081, Hunan, People's Republic of China
*Correspondence e-mail: hunansdljb@163.com
In the 19H17FN4O2S, molecules are linked via pairs of N—H⋯N interactions, forming centrosymmetric dimers. Two intramolecular N—H⋯O hydrogen bonds stabilize the molecular conformation.
of the title compound, CRelated literature
The title compound was synthesized as a herbicide. For details of the synthesis, see: Wang et al. (2004); Senda et al. (1972); Xue et al. (2002); Liu et al. (1998); Zhang et al. (2008).
Experimental
Crystal data
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Refinement
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Data collection: CrystalClear (Rigaku, 2008); cell CrystalClear; data reduction: CrystalClear; 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: SHELXL97.
Supporting information
https://doi.org/10.1107/S1600536811046125/ds2144sup1.cif
contains datablocks I, global. DOI:Structure factors: contains datablock I. DOI: https://doi.org/10.1107/S1600536811046125/ds2144Isup2.hkl
Supporting information file. DOI: https://doi.org/10.1107/S1600536811046125/ds2144Isup3.cml
The title compound was prepared according to the reported method (Wang et al., 2004; Senda et al., 1972). Crystals of (I) suitable for XRD were obtained by slow evaporation of the acetone solution at 293 K.
Positional parameters of all H atoms were calculated geometically and were allowed to ride on the C, O and N atoms to which they are bonded, with C—H = 0.95 to 0.99 Å and Uiso(H) = 1.2Ueq(C).
The title compound was synthesized as a herbicide. For details of the synthesis, see: Wang et al. (2004); Senda et al. (1972); Xue et al. (2002); Liu et al. (1998); Zhang et al. (2008).
Data collection: CrystalClear (Rigaku, 2008); cell
CrystalClear (Rigaku, 2008); data reduction: CrystalClear (Rigaku, 2008); 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: SHELXL97 (Sheldrick, 2008).C19H17FN4O2S | Z = 2 |
Mr = 384.43 | F(000) = 400 |
Triclinic, P1 | Dx = 1.407 Mg m−3 |
Hall symbol: -P 1 | Mo Kα radiation, λ = 0.71073 Å |
a = 9.2415 (18) Å | Cell parameters from 2908 reflections |
b = 10.047 (2) Å | θ = 2.4–29.1° |
c = 11.0949 (19) Å | µ = 0.21 mm−1 |
α = 73.312 (6)° | T = 133 K |
β = 66.880 (6)° | Block, colourless |
γ = 84.295 (7)° | 0.48 × 0.39 × 0.39 mm |
V = 907.4 (3) Å3 |
Rigaku AFC10/Saturn724+ diffractometer | 4089 independent reflections |
Radiation source: Rotating Anode | 3137 reflections with I > 2σ(I) |
Graphite monochromator | Rint = 0.025 |
Detector resolution: 28.5714 pixels mm-1 | θmax = 27.5°, θmin = 2.1° |
phi and ω scans | h = −11→9 |
Absorption correction: multi-scan (ABSCOR; Higashi, 1995) | k = −13→13 |
Tmin = 0.906, Tmax = 0.923 | l = −14→12 |
8644 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)] = 0.035 | Hydrogen site location: inferred from neighbouring sites |
wR(F2) = 0.079 | H atoms treated by a mixture of independent and constrained refinement |
S = 1.00 | w = 1/[σ2(Fo2) + (0.0296P)2 + 0.119P] where P = (Fo2 + 2Fc2)/3 |
4089 reflections | (Δ/σ)max = 0.001 |
251 parameters | Δρmax = 0.32 e Å−3 |
0 restraints | Δρmin = −0.23 e Å−3 |
C19H17FN4O2S | γ = 84.295 (7)° |
Mr = 384.43 | V = 907.4 (3) Å3 |
Triclinic, P1 | Z = 2 |
a = 9.2415 (18) Å | Mo Kα radiation |
b = 10.047 (2) Å | µ = 0.21 mm−1 |
c = 11.0949 (19) Å | T = 133 K |
α = 73.312 (6)° | 0.48 × 0.39 × 0.39 mm |
β = 66.880 (6)° |
Rigaku AFC10/Saturn724+ diffractometer | 4089 independent reflections |
Absorption correction: multi-scan (ABSCOR; Higashi, 1995) | 3137 reflections with I > 2σ(I) |
Tmin = 0.906, Tmax = 0.923 | Rint = 0.025 |
8644 measured reflections |
R[F2 > 2σ(F2)] = 0.035 | 0 restraints |
wR(F2) = 0.079 | H atoms treated by a mixture of independent and constrained refinement |
S = 1.00 | Δρmax = 0.32 e Å−3 |
4089 reflections | Δρmin = −0.23 e Å−3 |
251 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-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 | ||
S1 | 0.42534 (5) | 0.14869 (4) | 0.89857 (4) | 0.02801 (11) | |
F1 | 0.21687 (11) | 0.56288 (9) | 0.25643 (8) | 0.0357 (2) | |
O1 | 0.27259 (13) | 0.42794 (11) | 0.56187 (9) | 0.0295 (3) | |
O2 | −0.00916 (14) | 0.75621 (12) | 0.64645 (10) | 0.0363 (3) | |
N1 | 0.43164 (14) | 0.22266 (12) | 0.65160 (11) | 0.0222 (3) | |
N2 | 0.10887 (14) | 0.55174 (12) | 0.70402 (12) | 0.0228 (3) | |
N3 | 0.11794 (15) | 0.64303 (13) | 0.48270 (12) | 0.0239 (3) | |
N4 | 0.05563 (16) | 0.35724 (14) | 1.03305 (12) | 0.0341 (3) | |
C1 | 0.63303 (18) | −0.12037 (16) | 0.63660 (14) | 0.0265 (3) | |
H1 | 0.7399 | −0.0901 | 0.5950 | 0.032* | |
C2 | 0.5979 (2) | −0.26010 (17) | 0.67324 (16) | 0.0360 (4) | |
H2 | 0.6802 | −0.3254 | 0.6567 | 0.043* | |
C3 | 0.4422 (2) | −0.30499 (17) | 0.73435 (16) | 0.0394 (4) | |
H3 | 0.4175 | −0.4012 | 0.7596 | 0.047* | |
C4 | 0.3231 (2) | −0.20958 (17) | 0.75847 (15) | 0.0347 (4) | |
H4 | 0.2164 | −0.2403 | 0.8006 | 0.042* | |
C5 | 0.35910 (18) | −0.06872 (16) | 0.72123 (14) | 0.0259 (3) | |
H5 | 0.2768 | −0.0035 | 0.7382 | 0.031* | |
C6 | 0.51439 (16) | −0.02309 (14) | 0.65956 (12) | 0.0199 (3) | |
C7 | 0.56151 (16) | 0.12821 (14) | 0.61482 (14) | 0.0223 (3) | |
H7A | 0.6365 | 0.1390 | 0.6553 | 0.027* | |
H7B | 0.6175 | 0.1559 | 0.5146 | 0.027* | |
C8 | 0.36183 (16) | 0.25079 (14) | 0.77143 (13) | 0.0194 (3) | |
C9 | 0.24408 (17) | 0.35141 (14) | 0.79187 (13) | 0.0219 (2) | |
C10 | 0.21072 (17) | 0.44413 (15) | 0.67827 (13) | 0.0218 (3) | |
C11 | 0.06720 (17) | 0.66004 (15) | 0.60914 (14) | 0.0235 (3) | |
C12 | 0.10494 (16) | 0.73778 (15) | 0.36651 (13) | 0.0220 (3) | |
C13 | 0.05148 (17) | 0.87350 (16) | 0.35728 (15) | 0.0287 (3) | |
H13 | 0.0137 | 0.9076 | 0.4355 | 0.034* | |
C14 | 0.05355 (18) | 0.95894 (17) | 0.23327 (16) | 0.0354 (4) | |
H14 | 0.0189 | 1.0520 | 0.2271 | 0.042* | |
C15 | 0.10502 (19) | 0.91076 (18) | 0.11951 (16) | 0.0378 (4) | |
H15 | 0.1044 | 0.9701 | 0.0359 | 0.045* | |
C16 | 0.15778 (19) | 0.77617 (18) | 0.12629 (15) | 0.0330 (4) | |
H16 | 0.1927 | 0.7414 | 0.0485 | 0.040* | |
C17 | 0.15823 (17) | 0.69412 (15) | 0.24895 (14) | 0.0259 (3) | |
C18 | 0.4107 (2) | 0.25546 (18) | 1.00866 (16) | 0.0385 (4) | |
H18A | 0.4372 | 0.3521 | 0.9544 | 0.058* | |
H18B | 0.4839 | 0.2222 | 1.0548 | 0.058* | |
H18C | 0.3030 | 0.2501 | 1.0767 | 0.058* | |
C19 | 0.14271 (17) | 0.35427 (15) | 0.92622 (13) | 0.0219 (2) | |
H3N | 0.1721 (19) | 0.5738 (17) | 0.4704 (15) | 0.030 (5)* | |
H2N | 0.0681 (19) | 0.5644 (16) | 0.7839 (16) | 0.035 (5)* | |
H1N | 0.394 (2) | 0.2677 (18) | 0.5923 (17) | 0.040 (5)* |
U11 | U22 | U33 | U12 | U13 | U23 | |
S1 | 0.0371 (2) | 0.0269 (2) | 0.02340 (19) | 0.00577 (17) | −0.01710 (17) | −0.00569 (15) |
F1 | 0.0496 (6) | 0.0324 (5) | 0.0293 (5) | 0.0090 (4) | −0.0187 (4) | −0.0121 (4) |
O1 | 0.0418 (7) | 0.0305 (6) | 0.0189 (5) | 0.0157 (5) | −0.0141 (5) | −0.0122 (4) |
O2 | 0.0447 (7) | 0.0339 (7) | 0.0331 (6) | 0.0205 (6) | −0.0174 (5) | −0.0163 (5) |
N1 | 0.0279 (7) | 0.0215 (7) | 0.0191 (6) | 0.0080 (5) | −0.0107 (5) | −0.0082 (5) |
N2 | 0.0267 (7) | 0.0248 (7) | 0.0179 (6) | 0.0071 (5) | −0.0086 (5) | −0.0096 (5) |
N3 | 0.0289 (7) | 0.0202 (7) | 0.0236 (6) | 0.0069 (6) | −0.0117 (5) | −0.0073 (5) |
N4 | 0.0354 (8) | 0.0392 (8) | 0.0242 (7) | 0.0105 (7) | −0.0087 (6) | −0.0108 (6) |
C1 | 0.0287 (8) | 0.0298 (8) | 0.0253 (7) | 0.0082 (7) | −0.0129 (7) | −0.0125 (6) |
C2 | 0.0572 (12) | 0.0292 (9) | 0.0354 (9) | 0.0155 (8) | −0.0299 (9) | −0.0166 (7) |
C3 | 0.0736 (14) | 0.0225 (9) | 0.0310 (8) | −0.0057 (9) | −0.0287 (9) | −0.0059 (7) |
C4 | 0.0418 (10) | 0.0380 (10) | 0.0239 (8) | −0.0138 (8) | −0.0074 (7) | −0.0103 (7) |
C5 | 0.0257 (8) | 0.0303 (8) | 0.0232 (7) | 0.0001 (7) | −0.0070 (6) | −0.0127 (6) |
C6 | 0.0231 (7) | 0.0241 (7) | 0.0140 (6) | 0.0031 (6) | −0.0079 (6) | −0.0075 (5) |
C7 | 0.0190 (7) | 0.0233 (8) | 0.0216 (7) | 0.0028 (6) | −0.0044 (6) | −0.0074 (6) |
C8 | 0.0229 (7) | 0.0182 (7) | 0.0180 (6) | −0.0018 (6) | −0.0085 (6) | −0.0046 (5) |
C9 | 0.0264 (5) | 0.0216 (5) | 0.0189 (5) | 0.0030 (4) | −0.0093 (4) | −0.0073 (4) |
C10 | 0.0241 (7) | 0.0222 (7) | 0.0206 (7) | 0.0025 (6) | −0.0083 (6) | −0.0091 (6) |
C11 | 0.0225 (8) | 0.0234 (8) | 0.0262 (7) | 0.0028 (6) | −0.0108 (6) | −0.0078 (6) |
C12 | 0.0182 (7) | 0.0225 (8) | 0.0243 (7) | −0.0019 (6) | −0.0099 (6) | −0.0016 (6) |
C13 | 0.0227 (8) | 0.0274 (8) | 0.0339 (8) | 0.0034 (6) | −0.0114 (7) | −0.0052 (6) |
C14 | 0.0254 (8) | 0.0298 (9) | 0.0444 (9) | 0.0018 (7) | −0.0160 (8) | 0.0030 (7) |
C15 | 0.0284 (9) | 0.0434 (11) | 0.0354 (9) | −0.0044 (8) | −0.0190 (8) | 0.0098 (7) |
C16 | 0.0303 (9) | 0.0428 (10) | 0.0262 (8) | −0.0024 (7) | −0.0146 (7) | −0.0034 (7) |
C17 | 0.0242 (8) | 0.0255 (8) | 0.0291 (8) | 0.0005 (6) | −0.0129 (7) | −0.0051 (6) |
C18 | 0.0453 (10) | 0.0519 (11) | 0.0315 (8) | 0.0081 (9) | −0.0240 (8) | −0.0198 (8) |
C19 | 0.0264 (5) | 0.0216 (5) | 0.0189 (5) | 0.0030 (4) | −0.0093 (4) | −0.0073 (4) |
S1—C8 | 1.7567 (13) | C4—H4 | 0.9500 |
S1—C18 | 1.8041 (15) | C5—C6 | 1.385 (2) |
F1—C17 | 1.3674 (16) | C5—H5 | 0.9500 |
O1—C10 | 1.2424 (16) | C6—C7 | 1.5085 (19) |
O2—C11 | 1.2115 (16) | C7—H7A | 0.9900 |
N1—C8 | 1.3303 (17) | C7—H7B | 0.9900 |
N1—C7 | 1.4556 (17) | C8—C9 | 1.4060 (18) |
N1—H1N | 0.860 (17) | C9—C19 | 1.4223 (19) |
N2—C10 | 1.3785 (17) | C9—C10 | 1.4577 (18) |
N2—C11 | 1.4204 (17) | C12—C17 | 1.3847 (19) |
N2—H2N | 0.858 (15) | C12—C13 | 1.393 (2) |
N3—C11 | 1.3499 (18) | C13—C14 | 1.391 (2) |
N3—C12 | 1.4059 (17) | C13—H13 | 0.9500 |
N3—H3N | 0.827 (16) | C14—C15 | 1.374 (2) |
N4—C19 | 1.1488 (17) | C14—H14 | 0.9500 |
C1—C2 | 1.379 (2) | C15—C16 | 1.382 (2) |
C1—C6 | 1.3903 (19) | C15—H15 | 0.9500 |
C1—H1 | 0.9500 | C16—C17 | 1.375 (2) |
C2—C3 | 1.386 (2) | C16—H16 | 0.9500 |
C2—H2 | 0.9500 | C18—H18A | 0.9800 |
C3—C4 | 1.382 (2) | C18—H18B | 0.9800 |
C3—H3 | 0.9500 | C18—H18C | 0.9800 |
C4—C5 | 1.391 (2) | ||
C8—S1—C18 | 106.50 (7) | C9—C8—S1 | 124.36 (10) |
C8—N1—C7 | 126.66 (12) | C8—C9—C19 | 120.11 (12) |
C8—N1—H1N | 113.5 (11) | C8—C9—C10 | 121.33 (12) |
C7—N1—H1N | 119.8 (11) | C19—C9—C10 | 118.19 (12) |
C10—N2—C11 | 127.92 (12) | O1—C10—N2 | 120.88 (12) |
C10—N2—H2N | 120.9 (11) | O1—C10—C9 | 121.44 (12) |
C11—N2—H2N | 110.9 (11) | N2—C10—C9 | 117.68 (12) |
C11—N3—C12 | 127.09 (13) | O2—C11—N3 | 126.13 (13) |
C11—N3—H3N | 116.0 (11) | O2—C11—N2 | 119.24 (12) |
C12—N3—H3N | 116.4 (11) | N3—C11—N2 | 114.63 (12) |
C2—C1—C6 | 121.00 (16) | C17—C12—C13 | 117.29 (13) |
C2—C1—H1 | 119.5 | C17—C12—N3 | 116.69 (13) |
C6—C1—H1 | 119.5 | C13—C12—N3 | 125.92 (13) |
C1—C2—C3 | 119.78 (16) | C14—C13—C12 | 119.87 (14) |
C1—C2—H2 | 120.1 | C14—C13—H13 | 120.1 |
C3—C2—H2 | 120.1 | C12—C13—H13 | 120.1 |
C4—C3—C2 | 119.85 (16) | C15—C14—C13 | 120.97 (16) |
C4—C3—H3 | 120.1 | C15—C14—H14 | 119.5 |
C2—C3—H3 | 120.1 | C13—C14—H14 | 119.5 |
C3—C4—C5 | 120.16 (16) | C14—C15—C16 | 120.23 (14) |
C3—C4—H4 | 119.9 | C14—C15—H15 | 119.9 |
C5—C4—H4 | 119.9 | C16—C15—H15 | 119.9 |
C6—C5—C4 | 120.29 (15) | C17—C16—C15 | 118.02 (15) |
C6—C5—H5 | 119.9 | C17—C16—H16 | 121.0 |
C4—C5—H5 | 119.9 | C15—C16—H16 | 121.0 |
C5—C6—C1 | 118.91 (14) | F1—C17—C16 | 119.01 (13) |
C5—C6—C7 | 122.99 (13) | F1—C17—C12 | 117.38 (12) |
C1—C6—C7 | 118.09 (13) | C16—C17—C12 | 123.59 (14) |
N1—C7—C6 | 114.88 (12) | S1—C18—H18A | 109.5 |
N1—C7—H7A | 108.5 | S1—C18—H18B | 109.5 |
C6—C7—H7A | 108.5 | H18A—C18—H18B | 109.5 |
N1—C7—H7B | 108.5 | S1—C18—H18C | 109.5 |
C6—C7—H7B | 108.5 | H18A—C18—H18C | 109.5 |
H7A—C7—H7B | 107.5 | H18B—C18—H18C | 109.5 |
N1—C8—C9 | 121.34 (12) | N4—C19—C9 | 177.14 (16) |
N1—C8—S1 | 114.28 (10) | ||
C6—C1—C2—C3 | −0.2 (2) | C19—C9—C10—O1 | −165.04 (14) |
C1—C2—C3—C4 | −0.1 (2) | C8—C9—C10—N2 | −171.45 (13) |
C2—C3—C4—C5 | 0.2 (2) | C19—C9—C10—N2 | 15.5 (2) |
C3—C4—C5—C6 | 0.1 (2) | C12—N3—C11—O2 | 6.0 (3) |
C4—C5—C6—C1 | −0.5 (2) | C12—N3—C11—N2 | −174.67 (13) |
C4—C5—C6—C7 | 179.10 (12) | C10—N2—C11—O2 | −170.90 (14) |
C2—C1—C6—C5 | 0.52 (19) | C10—N2—C11—N3 | 9.7 (2) |
C2—C1—C6—C7 | −179.06 (12) | C11—N3—C12—C17 | −176.54 (14) |
C8—N1—C7—C6 | 81.84 (17) | C11—N3—C12—C13 | 7.2 (2) |
C5—C6—C7—N1 | 4.96 (18) | C17—C12—C13—C14 | −0.1 (2) |
C1—C6—C7—N1 | −175.49 (12) | N3—C12—C13—C14 | 176.14 (14) |
C7—N1—C8—C9 | 175.63 (13) | C12—C13—C14—C15 | 1.2 (2) |
C7—N1—C8—S1 | −6.28 (19) | C13—C14—C15—C16 | −0.8 (2) |
C18—S1—C8—N1 | 148.59 (11) | C14—C15—C16—C17 | −0.6 (2) |
C18—S1—C8—C9 | −33.39 (15) | C15—C16—C17—F1 | −176.93 (14) |
N1—C8—C9—C19 | 163.12 (14) | C15—C16—C17—C12 | 1.8 (2) |
S1—C8—C9—C19 | −14.8 (2) | C13—C12—C17—F1 | 177.34 (13) |
N1—C8—C9—C10 | −9.8 (2) | N3—C12—C17—F1 | 0.7 (2) |
S1—C8—C9—C10 | 172.35 (11) | C13—C12—C17—C16 | −1.4 (2) |
C11—N2—C10—O1 | −4.2 (2) | N3—C12—C17—C16 | −178.01 (14) |
C11—N2—C10—C9 | 175.25 (14) | C8—C9—C19—N4 | −135 (3) |
C8—C9—C10—O1 | 8.0 (2) | C10—C9—C19—N4 | 38 (3) |
D—H···A | D—H | H···A | D···A | D—H···A |
N1—H1N···O1 | 0.860 (17) | 1.894 (17) | 2.6024 (15) | 138.7 (15) |
N3—H3N···O1 | 0.827 (16) | 1.912 (16) | 2.6012 (16) | 140.1 (14) |
N2—H2N···N4i | 0.858 (15) | 2.229 (16) | 3.0710 (17) | 166.8 (14) |
Symmetry code: (i) −x, −y+1, −z+2. |
Experimental details
Crystal data | |
Chemical formula | C19H17FN4O2S |
Mr | 384.43 |
Crystal system, space group | Triclinic, P1 |
Temperature (K) | 133 |
a, b, c (Å) | 9.2415 (18), 10.047 (2), 11.0949 (19) |
α, β, γ (°) | 73.312 (6), 66.880 (6), 84.295 (7) |
V (Å3) | 907.4 (3) |
Z | 2 |
Radiation type | Mo Kα |
µ (mm−1) | 0.21 |
Crystal size (mm) | 0.48 × 0.39 × 0.39 |
Data collection | |
Diffractometer | Rigaku AFC10/Saturn724+ |
Absorption correction | Multi-scan (ABSCOR; Higashi, 1995) |
Tmin, Tmax | 0.906, 0.923 |
No. of measured, independent and observed [I > 2σ(I)] reflections | 8644, 4089, 3137 |
Rint | 0.025 |
(sin θ/λ)max (Å−1) | 0.650 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.035, 0.079, 1.00 |
No. of reflections | 4089 |
No. of parameters | 251 |
H-atom treatment | H atoms treated by a mixture of independent and constrained refinement |
Δρmax, Δρmin (e Å−3) | 0.32, −0.23 |
Computer programs: CrystalClear (Rigaku, 2008), SHELXS97 (Sheldrick, 2008), SHELXL97 (Sheldrick, 2008), SHELXTL (Sheldrick, 2008).
D—H···A | D—H | H···A | D···A | D—H···A |
N1—H1N···O1 | 0.860 (17) | 1.894 (17) | 2.6024 (15) | 138.7 (15) |
N3—H3N···O1 | 0.827 (16) | 1.912 (16) | 2.6012 (16) | 140.1 (14) |
N2—H2N···N4i | 0.858 (15) | 2.229 (16) | 3.0710 (17) | 166.8 (14) |
Symmetry code: (i) −x, −y+1, −z+2. |
Acknowledgements
We are grateful to Hunan Normal University for financial support.
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