organic compounds
N-[3,5-Dichloro-4-(1,1,2,2-tetrafluoroethoxy)phenyl]-2,6-difluorobenzamide
aHubei Biopesticide Engineering Research Center, Hubei Academy of Agricultural Science, Wuhan 430064, People's Republic of China
*Correspondence e-mail: ly.liang8@gmail.com
In the title compound, C15H7Cl2F6NO2, the conformation of the N—H bond in the amide segment is anti to the C=O bond and the dihedral angle between the two benzene rings is 78.6 (3)°. The terminal –CHF2 group is disordered over two orientations in a 0.67:0.33 ratio. In the crystal, the molecules are linked by N—H⋯O hydrogen bonds, generating C(4) chains propagating in [100].
Related literature
For background to the biological properties of related compounds, see: Liu, Li & Li (2004); Liu, Li & Zhong (2004); Shiga et al. (2003). For a related structure, see: Gowda et al. (2010). For reference structural data, see: Allen et al. (1987).
Experimental
Crystal data
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Refinement
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Data collection: SMART (Bruker, 2000); cell SAINT (Bruker, 2000); data reduction: SAINT; 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: SHELXTL.
Supporting information
https://doi.org/10.1107/S1600536810029612/hb5568sup1.cif
contains datablocks global, I. DOI:Structure factors: contains datablock I. DOI: https://doi.org/10.1107/S1600536810029612/hb5568Isup2.hkl
Triethylamine (6 mmol) was added dropwise to a stirred solution of 3,5-dichloro-4-(1,1,2,2-tetrafluoroethoxy) aniline (5 mmol) and 2,6-dichlorobenzoyl chloride (5 mmol) in dry dichloromethane (20 ml) at 275–277 K. The mixture was stirred at 283–288 K for 2 h, then washed with 0.5% hydrochloric acid solution, and a saturated aqueous solution of sodium hydrogen carbonate, dried and evaporated. The residue was recrystallized from dichloromethane, giving colourless blocks of (I) after 3 weeks.
All H-atoms bound to carbon were refined using a riding model with d(C—H) = 0.93 Å, Uiso=1.2Ueq (C) for aromatic 0.98 Å, Uiso = 1.2Ueq (C) for CH.
Amide derivatives showed diverse biological properties such as insecticidal (Liu, Li & Li, 2004), fungicidal (Liu, Li & Zhong, 2004) and acaricidal (Shiga et al., 2003) activities. Commercialized compounds include benzamide (flutolanil, fluopicolide), nicotinamide (boscalid) and thiazole carboxamide (thifluzamide, ethaboxam). As a part of our study on the synthesis of new fluorine-containing compounds with possible biological activities, we report here the
of the title compound, (I)(Fig. 1).In the molecule, all bond lengths and angles are normal (Allen et al., 1987). The conformation of the N—H and the C=O bonds in the amide segment are anti to each other, which is similar to that observed in other amide compound (Gowda et al., 2010). The dihedral angles between the two phenyl rings is 78.6°. The
is stabilized by intermolecular N—H···O hydrogen-bonds (Table 1).For background to the biological properties of related compounds, see: Liu, Li & Li (2004); Liu, Li & Zhong (2004); Shiga et al. (2003). For a related structure, see: Gowda et al. (2010). For reference structural data, see: Allen et al. (1987).
Data collection: SMART (Bruker, 2000); cell
SAINT (Bruker, 2000); data reduction: SAINT (Bruker, 2000); 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: SHELXTL (Sheldrick, 2008).Fig. 1. The structure of (I), showing 50% probability displacement ellipsoids. | |
Fig. 2. Crystal packing diagram of (I). Hydrogen bonds are shown as dashed lines. |
C15H7Cl2F6NO2 | Dx = 1.675 Mg m−3 |
Mr = 418.12 | Mo Kα radiation, λ = 0.71073 Å |
Orthorhombic, Pbca | Cell parameters from 3100 reflections |
a = 9.426 (2) Å | θ = 2.7–20.5° |
b = 15.568 (4) Å | µ = 0.47 mm−1 |
c = 22.601 (6) Å | T = 298 K |
V = 3316.7 (15) Å3 | Block, colorless |
Z = 8 | 0.16 × 0.12 × 0.10 mm |
F(000) = 1664 |
Bruker SMART APEX CCD diffractometer | 2916 independent reflections |
Radiation source: fine-focus sealed tube | 2111 reflections with I > 2σ(I) |
Graphite monochromator | Rint = 0.075 |
φ and ω scans | θmax = 25.0°, θmin = 2.6° |
Absorption correction: multi-scan (SADABS; Bruker, 2000) | h = −11→11 |
Tmin = 0.929, Tmax = 0.955 | k = −16→18 |
16415 measured reflections | l = −26→24 |
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)] = 0.084 | Hydrogen site location: inferred from neighbouring sites |
wR(F2) = 0.253 | H-atom parameters constrained |
S = 1.06 | w = 1/[σ2(Fo2) + (0.1378P)2 + 2.4511P] where P = (Fo2 + 2Fc2)/3 |
2916 reflections | (Δ/σ)max = 0.001 |
254 parameters | Δρmax = 0.54 e Å−3 |
35 restraints | Δρmin = −0.41 e Å−3 |
C15H7Cl2F6NO2 | V = 3316.7 (15) Å3 |
Mr = 418.12 | Z = 8 |
Orthorhombic, Pbca | Mo Kα radiation |
a = 9.426 (2) Å | µ = 0.47 mm−1 |
b = 15.568 (4) Å | T = 298 K |
c = 22.601 (6) Å | 0.16 × 0.12 × 0.10 mm |
Bruker SMART APEX CCD diffractometer | 2916 independent reflections |
Absorption correction: multi-scan (SADABS; Bruker, 2000) | 2111 reflections with I > 2σ(I) |
Tmin = 0.929, Tmax = 0.955 | Rint = 0.075 |
16415 measured reflections |
R[F2 > 2σ(F2)] = 0.084 | 35 restraints |
wR(F2) = 0.253 | H-atom parameters constrained |
S = 1.06 | Δρmax = 0.54 e Å−3 |
2916 reflections | Δρmin = −0.41 e Å−3 |
254 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) | |
C1 | 0.2885 (5) | 0.6858 (3) | 0.5451 (2) | 0.0619 (12) | |
C2 | 0.2068 (8) | 0.6985 (5) | 0.5949 (3) | 0.096 (2) | |
C3 | 0.1779 (10) | 0.6367 (8) | 0.6345 (4) | 0.143 (4) | |
H3 | 0.1250 | 0.6481 | 0.6684 | 0.172* | |
C4 | 0.2302 (11) | 0.5553 (7) | 0.6230 (4) | 0.132 (4) | |
H4 | 0.2102 | 0.5110 | 0.6493 | 0.158* | |
C5 | 0.3106 (8) | 0.5382 (4) | 0.5739 (4) | 0.103 (2) | |
H5 | 0.3445 | 0.4831 | 0.5665 | 0.124* | |
C6 | 0.3391 (6) | 0.6032 (4) | 0.5365 (3) | 0.0741 (15) | |
C7 | 0.3282 (4) | 0.7581 (3) | 0.5045 (2) | 0.0564 (11) | |
C8 | 0.2294 (4) | 0.8573 (3) | 0.4316 (2) | 0.0559 (11) | |
C9 | 0.1389 (5) | 0.8554 (3) | 0.3827 (2) | 0.0613 (12) | |
H9 | 0.0775 | 0.8093 | 0.3773 | 0.074* | |
C10 | 0.1405 (5) | 0.9217 (3) | 0.3424 (2) | 0.0636 (12) | |
C11 | 0.2300 (6) | 0.9916 (3) | 0.3497 (2) | 0.0672 (13) | |
C12 | 0.3205 (5) | 0.9913 (3) | 0.3980 (3) | 0.0701 (14) | |
C13 | 0.3201 (5) | 0.9259 (3) | 0.4389 (3) | 0.0683 (14) | |
H13 | 0.3807 | 0.9280 | 0.4714 | 0.082* | |
C14 | 0.1507 (7) | 1.1246 (4) | 0.3126 (3) | 0.0855 (17) | |
C15 | 0.1869 (11) | 1.1839 (5) | 0.2601 (4) | 0.146 (3) | |
H15 | 0.2893 | 1.1945 | 0.2585 | 0.175* | 0.67 |
H15' | 0.2111 | 1.1413 | 0.2298 | 0.175* | 0.33 |
Cl1 | 0.43376 (19) | 1.07768 (10) | 0.40998 (10) | 0.1141 (8) | |
Cl2 | 0.0311 (2) | 0.91643 (11) | 0.28089 (7) | 0.1026 (7) | |
F1 | 0.1596 (6) | 0.7801 (4) | 0.6046 (2) | 0.1471 (19) | |
F2 | 0.4199 (4) | 0.5898 (2) | 0.48811 (18) | 0.1020 (12) | |
F3 | 0.0163 (5) | 1.1038 (3) | 0.3168 (3) | 0.1456 (19) | |
F4 | 0.1720 (6) | 1.1679 (3) | 0.3624 (2) | 0.1382 (18) | |
N1 | 0.2209 (4) | 0.7900 (2) | 0.47228 (18) | 0.0605 (10) | |
H1 | 0.1390 | 0.7667 | 0.4771 | 0.073* | |
O1 | 0.4498 (3) | 0.7837 (2) | 0.5020 (2) | 0.0816 (11) | |
O2 | 0.2375 (4) | 1.0559 (2) | 0.30668 (17) | 0.0788 (11) | |
F6 | 0.1153 (11) | 1.2577 (5) | 0.2708 (4) | 0.163 (3) | 0.67 |
F5 | 0.1452 (10) | 1.1438 (6) | 0.2108 (4) | 0.161 (3) | 0.67 |
F5' | 0.3088 (15) | 1.2237 (11) | 0.2688 (8) | 0.157 (6) | 0.33 |
F6' | 0.0536 (18) | 1.2059 (19) | 0.2406 (12) | 0.219 (10) | 0.33 |
U11 | U22 | U33 | U12 | U13 | U23 | |
C1 | 0.051 (3) | 0.069 (3) | 0.066 (3) | −0.002 (2) | −0.004 (2) | 0.006 (2) |
C2 | 0.095 (4) | 0.118 (6) | 0.073 (4) | 0.010 (4) | 0.008 (3) | 0.010 (4) |
C3 | 0.139 (7) | 0.207 (11) | 0.084 (5) | −0.018 (8) | 0.013 (5) | 0.049 (7) |
C4 | 0.142 (8) | 0.139 (7) | 0.115 (7) | −0.049 (6) | −0.032 (6) | 0.069 (6) |
C5 | 0.122 (6) | 0.076 (4) | 0.112 (6) | −0.022 (4) | −0.030 (5) | 0.038 (4) |
C6 | 0.075 (3) | 0.065 (3) | 0.082 (4) | −0.007 (3) | −0.013 (3) | 0.011 (3) |
C7 | 0.048 (2) | 0.048 (2) | 0.074 (3) | 0.006 (2) | 0.002 (2) | −0.003 (2) |
C8 | 0.043 (2) | 0.048 (2) | 0.076 (3) | 0.0048 (18) | 0.007 (2) | 0.000 (2) |
C9 | 0.063 (3) | 0.051 (3) | 0.069 (3) | −0.005 (2) | 0.010 (2) | −0.008 (2) |
C10 | 0.072 (3) | 0.061 (3) | 0.058 (3) | 0.003 (2) | 0.009 (2) | −0.012 (2) |
C11 | 0.071 (3) | 0.053 (3) | 0.077 (3) | 0.007 (2) | 0.015 (3) | −0.001 (2) |
C12 | 0.058 (3) | 0.046 (3) | 0.105 (4) | 0.002 (2) | 0.001 (3) | 0.008 (2) |
C13 | 0.059 (3) | 0.046 (3) | 0.100 (4) | 0.006 (2) | −0.015 (3) | 0.000 (2) |
C14 | 0.105 (5) | 0.058 (3) | 0.093 (4) | 0.006 (3) | −0.008 (3) | 0.002 (3) |
C15 | 0.155 (5) | 0.127 (5) | 0.154 (5) | 0.027 (4) | −0.017 (4) | 0.016 (4) |
Cl1 | 0.0934 (12) | 0.0600 (9) | 0.189 (2) | −0.0223 (7) | −0.0398 (12) | 0.0268 (10) |
Cl2 | 0.1460 (16) | 0.0985 (12) | 0.0632 (9) | −0.0185 (10) | −0.0191 (9) | −0.0054 (7) |
F1 | 0.174 (5) | 0.159 (4) | 0.109 (3) | 0.050 (4) | 0.041 (3) | −0.021 (3) |
F2 | 0.123 (3) | 0.067 (2) | 0.116 (3) | 0.0233 (19) | 0.022 (2) | 0.0026 (18) |
F3 | 0.097 (3) | 0.097 (3) | 0.243 (6) | 0.021 (2) | 0.027 (3) | 0.002 (3) |
F4 | 0.186 (5) | 0.104 (3) | 0.125 (3) | 0.062 (3) | −0.023 (3) | −0.016 (3) |
N1 | 0.042 (2) | 0.055 (2) | 0.084 (3) | −0.0037 (16) | 0.0022 (18) | 0.0098 (19) |
O1 | 0.0474 (19) | 0.064 (2) | 0.134 (3) | −0.0028 (16) | −0.014 (2) | 0.020 (2) |
O2 | 0.091 (3) | 0.059 (2) | 0.086 (3) | 0.0114 (18) | 0.022 (2) | 0.0166 (18) |
F6 | 0.179 (5) | 0.136 (4) | 0.174 (5) | 0.032 (4) | −0.008 (4) | 0.038 (4) |
F5 | 0.189 (5) | 0.165 (5) | 0.129 (4) | 0.017 (4) | −0.020 (4) | 0.012 (4) |
F5' | 0.157 (7) | 0.154 (7) | 0.160 (7) | −0.004 (5) | 0.007 (5) | 0.006 (5) |
F6' | 0.217 (11) | 0.221 (11) | 0.218 (11) | 0.004 (5) | −0.006 (5) | 0.005 (5) |
C1—C2 | 1.377 (8) | C10—Cl2 | 1.733 (5) |
C1—C6 | 1.385 (7) | C11—C12 | 1.385 (7) |
C1—C7 | 1.500 (7) | C11—O2 | 1.398 (6) |
C2—C3 | 1.344 (11) | C12—C13 | 1.375 (7) |
C2—F1 | 1.363 (8) | C12—Cl1 | 1.738 (5) |
C3—C4 | 1.384 (13) | C13—H13 | 0.9300 |
C3—H3 | 0.9300 | C14—F3 | 1.311 (8) |
C4—C5 | 1.370 (13) | C14—F4 | 1.328 (7) |
C4—H4 | 0.9300 | C14—O2 | 1.352 (7) |
C5—C6 | 1.346 (8) | C14—C15 | 1.540 (8) |
C5—H5 | 0.9300 | C15—F5' | 1.321 (10) |
C6—F2 | 1.350 (7) | C15—F5 | 1.335 (8) |
C7—O1 | 1.215 (5) | C15—F6 | 1.355 (8) |
C7—N1 | 1.341 (6) | C15—F6' | 1.375 (10) |
C8—C13 | 1.379 (6) | C15—H15 | 0.9800 |
C8—N1 | 1.395 (6) | C15—H15' | 0.9791 |
C8—C9 | 1.398 (7) | N1—H1 | 0.8600 |
C9—C10 | 1.375 (7) | F5—H15' | 0.7554 |
C9—H9 | 0.9300 | F5'—H15 | 0.5415 |
C10—C11 | 1.388 (7) | ||
C2—C1—C6 | 116.1 (5) | C12—C13—C8 | 119.7 (5) |
C2—C1—C7 | 122.1 (5) | C12—C13—H13 | 120.2 |
C6—C1—C7 | 121.6 (5) | C8—C13—H13 | 120.2 |
C3—C2—F1 | 119.6 (8) | F3—C14—F4 | 102.1 (6) |
C3—C2—C1 | 123.7 (8) | F3—C14—O2 | 113.3 (5) |
F1—C2—C1 | 116.7 (6) | F4—C14—O2 | 113.2 (5) |
C2—C3—C4 | 117.3 (9) | F3—C14—C15 | 114.7 (6) |
C2—C3—H3 | 121.4 | F4—C14—C15 | 108.4 (6) |
C4—C3—H3 | 121.4 | O2—C14—C15 | 105.3 (6) |
C5—C4—C3 | 121.8 (7) | F5'—C15—F5 | 126.8 (12) |
C5—C4—H4 | 119.1 | F5'—C15—F6 | 90.5 (10) |
C3—C4—H4 | 119.1 | F5—C15—F6 | 113.5 (9) |
C6—C5—C4 | 118.2 (8) | F5'—C15—F6' | 136.5 (16) |
C6—C5—H5 | 120.9 | F5—C15—F6' | 65.2 (13) |
C4—C5—H5 | 120.9 | F6—C15—F6' | 52.4 (12) |
C5—C6—F2 | 120.3 (6) | F5'—C15—C14 | 111.1 (10) |
C5—C6—C1 | 122.8 (7) | F5—C15—C14 | 107.3 (8) |
F2—C6—C1 | 116.8 (4) | F6—C15—C14 | 105.1 (7) |
O1—C7—N1 | 124.4 (4) | F6'—C15—C14 | 101.2 (13) |
O1—C7—C1 | 120.6 (4) | F5'—C15—H15 | 21.3 |
N1—C7—C1 | 115.0 (4) | F5—C15—H15 | 109.8 |
C13—C8—N1 | 122.6 (5) | F6—C15—H15 | 110.7 |
C13—C8—C9 | 119.3 (4) | F6'—C15—H15 | 147.7 |
N1—C8—C9 | 118.1 (4) | C14—C15—H15 | 110.3 |
C10—C9—C8 | 120.1 (4) | F5'—C15—H15' | 102.6 |
C10—C9—H9 | 120.0 | F5—C15—H15' | 33.9 |
C8—C9—H9 | 120.0 | F6—C15—H15' | 144.6 |
C9—C10—C11 | 121.1 (5) | F6'—C15—H15' | 99.0 |
C9—C10—Cl2 | 119.3 (4) | C14—C15—H15' | 100.6 |
C11—C10—Cl2 | 119.6 (4) | H15—C15—H15' | 82.0 |
C12—C11—C10 | 117.7 (5) | C7—N1—C8 | 126.3 (4) |
C12—C11—O2 | 121.3 (5) | C7—N1—H1 | 116.9 |
C10—C11—O2 | 120.6 (5) | C8—N1—H1 | 116.9 |
C13—C12—C11 | 122.1 (5) | C14—O2—C11 | 117.9 (4) |
C13—C12—Cl1 | 118.0 (4) | C15—F5—H15' | 46.3 |
C11—C12—Cl1 | 119.9 (4) | C15—F5'—H15 | 41.2 |
C6—C1—C2—C3 | 1.5 (10) | C10—C11—C12—Cl1 | −179.3 (4) |
C7—C1—C2—C3 | −174.9 (7) | O2—C11—C12—Cl1 | 6.7 (7) |
C6—C1—C2—F1 | 178.3 (5) | C11—C12—C13—C8 | 1.4 (8) |
C7—C1—C2—F1 | 1.9 (9) | Cl1—C12—C13—C8 | 178.6 (4) |
F1—C2—C3—C4 | −179.0 (8) | N1—C8—C13—C12 | −178.3 (5) |
C1—C2—C3—C4 | −2.3 (13) | C9—C8—C13—C12 | −0.1 (7) |
C2—C3—C4—C5 | 1.3 (14) | F3—C14—C15—F5' | 159.9 (10) |
C3—C4—C5—C6 | 0.4 (13) | F4—C14—C15—F5' | 46.6 (12) |
C4—C5—C6—F2 | 178.8 (6) | O2—C14—C15—F5' | −74.8 (11) |
C4—C5—C6—C1 | −1.2 (10) | F3—C14—C15—F5 | −57.7 (10) |
C2—C1—C6—C5 | 0.4 (8) | F4—C14—C15—F5 | −171.1 (7) |
C7—C1—C6—C5 | 176.8 (5) | O2—C14—C15—F5 | 67.5 (9) |
C2—C1—C6—F2 | −179.7 (5) | F3—C14—C15—F6 | 63.3 (10) |
C7—C1—C6—F2 | −3.3 (7) | F4—C14—C15—F6 | −50.0 (10) |
C2—C1—C7—O1 | 109.9 (6) | O2—C14—C15—F6 | −171.4 (8) |
C6—C1—C7—O1 | −66.3 (7) | F3—C14—C15—F6' | 9.5 (16) |
C2—C1—C7—N1 | −70.5 (7) | F4—C14—C15—F6' | −103.8 (15) |
C6—C1—C7—N1 | 113.3 (5) | O2—C14—C15—F6' | 134.8 (15) |
C13—C8—C9—C10 | −0.2 (7) | O1—C7—N1—C8 | −0.8 (8) |
N1—C8—C9—C10 | 178.0 (4) | C1—C7—N1—C8 | 179.6 (4) |
C8—C9—C10—C11 | −0.6 (7) | C13—C8—N1—C7 | −33.8 (7) |
C8—C9—C10—Cl2 | 178.1 (4) | C9—C8—N1—C7 | 148.1 (5) |
C9—C10—C11—C12 | 1.8 (7) | F3—C14—O2—C11 | −55.4 (7) |
Cl2—C10—C11—C12 | −177.0 (4) | F4—C14—O2—C11 | 60.3 (7) |
C9—C10—C11—O2 | 175.9 (4) | C15—C14—O2—C11 | 178.5 (6) |
Cl2—C10—C11—O2 | −2.9 (6) | C12—C11—O2—C14 | −94.2 (6) |
C10—C11—C12—C13 | −2.2 (8) | C10—C11—O2—C14 | 92.0 (6) |
O2—C11—C12—C13 | −176.2 (4) |
D—H···A | D—H | H···A | D···A | D—H···A |
N1—H1···O1i | 0.86 | 2.00 | 2.861 (5) | 174 |
Symmetry code: (i) x−1/2, −y+3/2, −z+1. |
Experimental details
Crystal data | |
Chemical formula | C15H7Cl2F6NO2 |
Mr | 418.12 |
Crystal system, space group | Orthorhombic, Pbca |
Temperature (K) | 298 |
a, b, c (Å) | 9.426 (2), 15.568 (4), 22.601 (6) |
V (Å3) | 3316.7 (15) |
Z | 8 |
Radiation type | Mo Kα |
µ (mm−1) | 0.47 |
Crystal size (mm) | 0.16 × 0.12 × 0.10 |
Data collection | |
Diffractometer | Bruker SMART APEX CCD |
Absorption correction | Multi-scan (SADABS; Bruker, 2000) |
Tmin, Tmax | 0.929, 0.955 |
No. of measured, independent and observed [I > 2σ(I)] reflections | 16415, 2916, 2111 |
Rint | 0.075 |
(sin θ/λ)max (Å−1) | 0.595 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.084, 0.253, 1.06 |
No. of reflections | 2916 |
No. of parameters | 254 |
No. of restraints | 35 |
H-atom treatment | H-atom parameters constrained |
Δρmax, Δρmin (e Å−3) | 0.54, −0.41 |
Computer programs: SMART (Bruker, 2000), SAINT (Bruker, 2000), SHELXS97 (Sheldrick, 2008), SHELXL97 (Sheldrick, 2008), SHELXTL (Sheldrick, 2008).
D—H···A | D—H | H···A | D···A | D—H···A |
N1—H1···O1i | 0.86 | 2.00 | 2.861 (5) | 174 |
Symmetry code: (i) x−1/2, −y+3/2, −z+1. |
Acknowledgements
We gratefully acknowledge the financial support of this work by the Foundation of Hubei Agricultural Scientific and Technological Innovation.
References
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Amide derivatives showed diverse biological properties such as insecticidal (Liu, Li & Li, 2004), fungicidal (Liu, Li & Zhong, 2004) and acaricidal (Shiga et al., 2003) activities. Commercialized compounds include benzamide (flutolanil, fluopicolide), nicotinamide (boscalid) and thiazole carboxamide (thifluzamide, ethaboxam). As a part of our study on the synthesis of new fluorine-containing compounds with possible biological activities, we report here the crystal structure of the title compound, (I)(Fig. 1).
In the molecule, all bond lengths and angles are normal (Allen et al., 1987). The conformation of the N—H and the C=O bonds in the amide segment are anti to each other, which is similar to that observed in other amide compound (Gowda et al., 2010). The dihedral angles between the two phenyl rings is 78.6°. The crystal structure is stabilized by intermolecular N—H···O hydrogen-bonds (Table 1).