organic compounds
2-Chloroethyl 4-nitrobenzoate
aKey Laboratory of Nuclear Medicine, Ministry of Health, Jiangsu Key Laboratory of Molecular Nuclear Medicine, Jiangsu Institute of Nuclear Medicine, Wuxi 214063, People's Republic of China
*Correspondence e-mail: haijiaoyiya@sina.com
The title compound, C9H8ClNO4, crystallizes with two molecules in the In each molecule, the carboxylate group is nearly coplanar with the benzene ring, forming dihedral angles of 2.4 (1) and 4.9 (1)°. In the crystal, molecules are linked through weak C—H⋯O and C—H⋯Cl hydrogen bonds. A short O⋯N contact of 2.7660 (19) Å occurs between the nitro groups of adjacent molecules.
Related literature
For benzoates as intermediates in the chemistry of pigments and pharmaceuticals, see: Zhang et al. (1995, 1990). For a related structure, see: Wu et al. (2009).
Experimental
Crystal data
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Refinement
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Data collection: RAPID-AUTO (Rigaku, 2004); cell RAPID-AUTO; data reduction: RAPID-AUTO; program(s) used to solve structure: SHELXTL (Sheldrick, 2008); program(s) used to refine structure: SHELXTL; molecular graphics: SHELXTL; software used to prepare material for publication: SHELXTL.
Supporting information
https://doi.org/10.1107/S1600536810038742/xu5038sup1.cif
contains datablocks I, global. DOI:Structure factors: contains datablock I. DOI: https://doi.org/10.1107/S1600536810038742/xu5038Isup2.hkl
Commercial 2-chloroethyl 4-nitrobenzoate was recrystallized by slow evaporation of methanol/water solution (1:1 v/v). Colourless single crystals were formed after two weeks.
H atoms were placed in calculated positions with C–H = 0.99 (methylene) and 0.95 Å (aromatic), and were refined in a riding mode with Uiso(H) = 1.2Ueq(C).
Benzoates are important intermediates in the chemistry of pigments and pharmaceuticals, which are widely used all over the world (Zhang et al., 1995; Zhang et al., 1990). The crystall structure of Methyl 4-nitrobenzoate has been reported (Wu et al., 2009). As an extension of our study, we report here the
of the title compound.The
of the title compound (Fig.1) contains two crystallographically independent molecules in an asymmetric unit.The crystal data show that the bond lengths and angles are within expected ranges. The ester groups and the benzene rings in the two molecules are almost coplanar, as indicated by the dihedral angles of 2.4 (1)° (O1/O2/C6/C7; C1—C6) and 4.9 (1)° (O1'/O2'/C6'/C7'; C1'—C6'). The dihedral angle between the ring(C1—C6) and the ring(C1'—C6') is 92.7 (1)°.In the cyrstal structure, adjacent molecules are linked together by the weak C—H···O and C—H···Cl hydrogen bonds (Table 1). Intramolecular C—H···O interactions are also observed. These hydrogen-bonding interactions stabilize the crystal structure.
For benzoates as intermediates in the chemistry of pigments and pharmaceuticals, see: Zhang et al. (1995, 1990). For a related structure, see: Wu et al. (2009).
Data collection: RAPID-AUTO (Rigaku, 2004); cell
RAPID-AUTO (Rigaku, 2004); data reduction: RAPID-AUTO (Rigaku, 2004); program(s) used to solve structure: SHELXTL (Sheldrick, 2008); program(s) used to refine structure: SHELXTL (Sheldrick, 2008); molecular graphics: SHELXTL (Sheldrick, 2008); software used to prepare material for publication: SHELXTL (Sheldrick, 2008).Fig. 1. eA view of the title compound with the atomic numbering scheme. Displacement ellipsoids were drawn at the 50% probability level. |
C9H8ClNO4 | F(000) = 944 |
Mr = 229.61 | Dx = 1.559 Mg m−3 |
Monoclinic, P21/n | Mo Kα radiation, λ = 0.71073 Å |
Hall symbol: -P 2yn | Cell parameters from 5688 reflections |
a = 4.9404 (10) Å | θ = 3.0–27.5° |
b = 21.618 (5) Å | µ = 0.38 mm−1 |
c = 18.325 (4) Å | T = 103 K |
β = 90.441 (3)° | Prism, colorless |
V = 1957.0 (7) Å3 | 0.40 × 0.20 × 0.20 mm |
Z = 8 |
Rigaku SPIDER diffractometer | 4466 independent reflections |
Radiation source: Rotating Anode | 3781 reflections with I > 2σ(I) |
Graphite monochromator | Rint = 0.033 |
ω scans | θmax = 27.5°, θmin = 3.0° |
Absorption correction: multi-scan (ABSCOR; Higashi, 1995) | h = −6→6 |
Tmin = 0.862, Tmax = 0.927 | k = −28→28 |
18618 measured reflections | l = −23→20 |
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)] = 0.034 | Hydrogen site location: inferred from neighbouring sites |
wR(F2) = 0.084 | H-atom parameters constrained |
S = 1.00 | w = 1/[σ2(Fo2) + (0.0441P)2 + 0.680P] where P = (Fo2 + 2Fc2)/3 |
4466 reflections | (Δ/σ)max = 0.001 |
271 parameters | Δρmax = 0.34 e Å−3 |
0 restraints | Δρmin = −0.23 e Å−3 |
C9H8ClNO4 | V = 1957.0 (7) Å3 |
Mr = 229.61 | Z = 8 |
Monoclinic, P21/n | Mo Kα radiation |
a = 4.9404 (10) Å | µ = 0.38 mm−1 |
b = 21.618 (5) Å | T = 103 K |
c = 18.325 (4) Å | 0.40 × 0.20 × 0.20 mm |
β = 90.441 (3)° |
Rigaku SPIDER diffractometer | 4466 independent reflections |
Absorption correction: multi-scan (ABSCOR; Higashi, 1995) | 3781 reflections with I > 2σ(I) |
Tmin = 0.862, Tmax = 0.927 | Rint = 0.033 |
18618 measured reflections |
R[F2 > 2σ(F2)] = 0.034 | 0 restraints |
wR(F2) = 0.084 | H-atom parameters constrained |
S = 1.00 | Δρmax = 0.34 e Å−3 |
4466 reflections | Δρmin = −0.23 e Å−3 |
271 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 | ||
Cl1 | 0.58062 (8) | 0.615621 (18) | 0.60156 (2) | 0.02137 (10) | |
O1 | 0.5719 (2) | 0.70861 (5) | 0.72719 (6) | 0.0201 (2) | |
O2 | 0.4652 (2) | 0.80061 (5) | 0.77677 (6) | 0.0230 (3) | |
O3 | 1.4451 (3) | 0.74075 (6) | 1.03965 (7) | 0.0288 (3) | |
O4 | 1.5555 (2) | 0.65746 (6) | 0.98123 (7) | 0.0274 (3) | |
N1 | 1.4158 (3) | 0.70367 (6) | 0.98970 (8) | 0.0203 (3) | |
C1 | 0.8669 (3) | 0.78260 (7) | 0.88589 (9) | 0.0169 (3) | |
H1 | 0.7699 | 0.8205 | 0.8865 | 0.020* | |
C2 | 1.0633 (3) | 0.77121 (7) | 0.93827 (9) | 0.0176 (3) | |
H2 | 1.1025 | 0.8007 | 0.9752 | 0.021* | |
C3 | 1.2012 (3) | 0.71558 (7) | 0.93535 (8) | 0.0163 (3) | |
C4 | 1.1480 (3) | 0.67097 (7) | 0.88291 (9) | 0.0169 (3) | |
H4 | 1.2455 | 0.6331 | 0.8825 | 0.020* | |
C5 | 0.9499 (3) | 0.68282 (7) | 0.83117 (8) | 0.0163 (3) | |
H5 | 0.9090 | 0.6528 | 0.7949 | 0.020* | |
C6 | 0.8102 (3) | 0.73879 (7) | 0.83215 (8) | 0.0143 (3) | |
C7 | 0.5974 (3) | 0.75381 (7) | 0.77687 (8) | 0.0155 (3) | |
C8 | 0.3759 (3) | 0.71808 (7) | 0.66929 (9) | 0.0193 (3) | |
H8A | 0.4555 | 0.7434 | 0.6299 | 0.023* | |
H8B | 0.2148 | 0.7399 | 0.6882 | 0.023* | |
C9 | 0.2977 (3) | 0.65561 (7) | 0.64066 (9) | 0.0183 (3) | |
H9A | 0.1541 | 0.6605 | 0.6031 | 0.022* | |
H9B | 0.2231 | 0.6305 | 0.6810 | 0.022* | |
Cl1' | 0.09925 (8) | 0.578510 (18) | 0.46926 (2) | 0.02083 (10) | |
O1' | 0.0719 (2) | 0.53366 (5) | 0.30930 (6) | 0.0170 (2) | |
O2' | −0.0224 (2) | 0.45272 (5) | 0.23673 (6) | 0.0203 (2) | |
O3' | 0.9692 (2) | 0.56670 (5) | 0.00593 (7) | 0.0249 (3) | |
O4' | 1.0593 (2) | 0.63815 (6) | 0.08520 (6) | 0.0243 (3) | |
N1' | 0.9309 (3) | 0.59294 (6) | 0.06415 (7) | 0.0176 (3) | |
C1' | 0.3955 (3) | 0.49087 (7) | 0.13991 (8) | 0.0158 (3) | |
H1' | 0.3083 | 0.4527 | 0.1291 | 0.019* | |
C2' | 0.5964 (3) | 0.51288 (7) | 0.09445 (9) | 0.0165 (3) | |
H2' | 0.6497 | 0.4903 | 0.0525 | 0.020* | |
C3' | 0.7174 (3) | 0.56882 (7) | 0.11200 (8) | 0.0150 (3) | |
C4' | 0.6481 (3) | 0.60310 (7) | 0.17254 (9) | 0.0170 (3) | |
H4' | 0.7366 | 0.6411 | 0.1831 | 0.020* | |
C5' | 0.4468 (3) | 0.58079 (7) | 0.21743 (8) | 0.0160 (3) | |
H5' | 0.3941 | 0.6037 | 0.2592 | 0.019* | |
C6' | 0.3209 (3) | 0.52453 (7) | 0.20138 (8) | 0.0139 (3) | |
C7' | 0.1063 (3) | 0.49883 (7) | 0.24947 (8) | 0.0149 (3) | |
C8' | −0.1343 (3) | 0.51265 (7) | 0.35872 (8) | 0.0168 (3) | |
H8'1 | −0.0718 | 0.4753 | 0.3852 | 0.020* | |
H8'2 | −0.3017 | 0.5022 | 0.3314 | 0.020* | |
C9' | −0.1878 (3) | 0.56394 (8) | 0.41134 (9) | 0.0211 (3) | |
H9'1 | −0.3454 | 0.5530 | 0.4418 | 0.025* | |
H9'2 | −0.2334 | 0.6020 | 0.3839 | 0.025* |
U11 | U22 | U33 | U12 | U13 | U23 | |
Cl1 | 0.01863 (19) | 0.0242 (2) | 0.0213 (2) | −0.00012 (15) | 0.00069 (15) | −0.00381 (16) |
O1 | 0.0238 (6) | 0.0183 (5) | 0.0182 (6) | 0.0036 (5) | −0.0087 (5) | −0.0042 (4) |
O2 | 0.0287 (6) | 0.0174 (5) | 0.0228 (6) | 0.0070 (5) | −0.0078 (5) | −0.0007 (5) |
O3 | 0.0304 (7) | 0.0329 (7) | 0.0229 (7) | −0.0062 (5) | −0.0103 (6) | 0.0002 (5) |
O4 | 0.0203 (6) | 0.0359 (7) | 0.0259 (7) | 0.0089 (5) | 0.0000 (5) | 0.0089 (5) |
N1 | 0.0156 (6) | 0.0272 (7) | 0.0182 (7) | −0.0039 (6) | −0.0011 (5) | 0.0071 (6) |
C1 | 0.0191 (8) | 0.0141 (7) | 0.0174 (8) | 0.0020 (6) | 0.0006 (6) | −0.0007 (6) |
C2 | 0.0209 (8) | 0.0178 (7) | 0.0142 (8) | −0.0020 (6) | 0.0001 (6) | −0.0011 (6) |
C3 | 0.0131 (7) | 0.0215 (7) | 0.0144 (7) | −0.0020 (6) | −0.0004 (6) | 0.0050 (6) |
C4 | 0.0165 (7) | 0.0150 (7) | 0.0191 (8) | 0.0026 (6) | 0.0021 (6) | 0.0020 (6) |
C5 | 0.0199 (8) | 0.0142 (7) | 0.0148 (7) | −0.0005 (6) | 0.0013 (6) | −0.0012 (6) |
C6 | 0.0157 (7) | 0.0146 (7) | 0.0127 (7) | −0.0006 (6) | 0.0015 (6) | 0.0016 (6) |
C7 | 0.0179 (7) | 0.0155 (7) | 0.0131 (7) | −0.0016 (6) | 0.0009 (6) | 0.0005 (6) |
C8 | 0.0217 (8) | 0.0192 (7) | 0.0168 (8) | 0.0010 (6) | −0.0071 (6) | −0.0008 (6) |
C9 | 0.0152 (7) | 0.0209 (7) | 0.0189 (8) | −0.0011 (6) | 0.0006 (6) | −0.0018 (6) |
Cl1' | 0.0243 (2) | 0.02306 (19) | 0.01513 (19) | −0.00621 (15) | 0.00131 (15) | −0.00093 (15) |
O1' | 0.0212 (6) | 0.0176 (5) | 0.0123 (5) | −0.0048 (4) | 0.0038 (4) | −0.0015 (4) |
O2' | 0.0235 (6) | 0.0157 (5) | 0.0216 (6) | −0.0044 (5) | 0.0024 (5) | −0.0019 (5) |
O3' | 0.0313 (7) | 0.0233 (6) | 0.0203 (6) | 0.0061 (5) | 0.0107 (5) | 0.0013 (5) |
O4' | 0.0200 (6) | 0.0302 (6) | 0.0225 (6) | −0.0072 (5) | −0.0001 (5) | 0.0030 (5) |
N1' | 0.0154 (6) | 0.0206 (7) | 0.0167 (7) | 0.0054 (5) | 0.0004 (5) | 0.0052 (5) |
C1' | 0.0183 (7) | 0.0139 (7) | 0.0153 (8) | 0.0010 (6) | −0.0024 (6) | −0.0015 (6) |
C2' | 0.0184 (7) | 0.0178 (7) | 0.0134 (7) | 0.0047 (6) | −0.0009 (6) | −0.0025 (6) |
C3' | 0.0125 (7) | 0.0181 (7) | 0.0144 (7) | 0.0026 (6) | −0.0001 (6) | 0.0048 (6) |
C4' | 0.0183 (8) | 0.0164 (7) | 0.0164 (8) | −0.0014 (6) | −0.0022 (6) | 0.0002 (6) |
C5' | 0.0195 (8) | 0.0154 (7) | 0.0130 (7) | 0.0000 (6) | 0.0002 (6) | −0.0021 (6) |
C6' | 0.0146 (7) | 0.0145 (7) | 0.0127 (7) | 0.0014 (6) | −0.0021 (6) | 0.0013 (6) |
C7' | 0.0164 (7) | 0.0144 (7) | 0.0138 (7) | 0.0031 (6) | −0.0026 (6) | 0.0006 (6) |
C8' | 0.0170 (7) | 0.0200 (7) | 0.0134 (8) | −0.0038 (6) | 0.0032 (6) | 0.0012 (6) |
C9' | 0.0172 (8) | 0.0261 (8) | 0.0202 (8) | 0.0018 (6) | 0.0014 (6) | −0.0025 (7) |
Cl1—C9 | 1.7971 (16) | Cl1'—C9' | 1.7927 (17) |
O1—C7 | 1.3408 (18) | O1'—C7' | 1.3419 (18) |
O1—C8 | 1.4454 (19) | O1'—C8' | 1.4416 (18) |
O2—C7 | 1.2043 (18) | O2'—C7' | 1.2041 (18) |
O3—N1 | 1.2245 (19) | O3'—N1' | 1.2243 (18) |
O4—N1 | 1.2247 (18) | O4'—N1' | 1.2258 (17) |
N1—C3 | 1.472 (2) | N1'—C3' | 1.4725 (19) |
C1—C2 | 1.382 (2) | C1'—C2' | 1.385 (2) |
C1—C6 | 1.393 (2) | C1'—C6' | 1.393 (2) |
C1—H1 | 0.9500 | C1'—H1' | 0.9500 |
C2—C3 | 1.383 (2) | C2'—C3' | 1.386 (2) |
C2—H2 | 0.9500 | C2'—H2' | 0.9500 |
C3—C4 | 1.385 (2) | C3'—C4' | 1.380 (2) |
C4—C5 | 1.381 (2) | C4'—C5' | 1.382 (2) |
C4—H4 | 0.9500 | C4'—H4' | 0.9500 |
C5—C6 | 1.393 (2) | C5'—C6' | 1.396 (2) |
C5—H5 | 0.9500 | C5'—H5' | 0.9500 |
C6—C7 | 1.490 (2) | C6'—C7' | 1.491 (2) |
C8—C9 | 1.498 (2) | C8'—C9' | 1.494 (2) |
C8—H8A | 0.9900 | C8'—H8'1 | 0.9900 |
C8—H8B | 0.9900 | C8'—H8'2 | 0.9900 |
C9—H9A | 0.9900 | C9'—H9'1 | 0.9900 |
C9—H9B | 0.9900 | C9'—H9'2 | 0.9900 |
C7—O1—C8 | 117.01 (12) | C7'—O1'—C8' | 115.53 (11) |
O3—N1—O4 | 124.40 (14) | O3'—N1'—O4' | 124.11 (14) |
O3—N1—C3 | 118.16 (14) | O3'—N1'—C3' | 118.11 (13) |
O4—N1—C3 | 117.44 (14) | O4'—N1'—C3' | 117.79 (13) |
C2—C1—C6 | 120.41 (14) | C2'—C1'—C6' | 120.14 (14) |
C2—C1—H1 | 119.8 | C2'—C1'—H1' | 119.9 |
C6—C1—H1 | 119.8 | C6'—C1'—H1' | 119.9 |
C1—C2—C3 | 118.13 (14) | C1'—C2'—C3' | 118.03 (14) |
C1—C2—H2 | 120.9 | C1'—C2'—H2' | 121.0 |
C3—C2—H2 | 120.9 | C3'—C2'—H2' | 121.0 |
C2—C3—C4 | 122.76 (14) | C4'—C3'—C2' | 123.12 (14) |
C2—C3—N1 | 118.58 (14) | C4'—C3'—N1' | 118.16 (13) |
C4—C3—N1 | 118.65 (14) | C2'—C3'—N1' | 118.72 (14) |
C5—C4—C3 | 118.48 (14) | C3'—C4'—C5' | 118.36 (14) |
C5—C4—H4 | 120.8 | C3'—C4'—H4' | 120.8 |
C3—C4—H4 | 120.8 | C5'—C4'—H4' | 120.8 |
C4—C5—C6 | 120.04 (14) | C4'—C5'—C6' | 120.00 (14) |
C4—C5—H5 | 120.0 | C4'—C5'—H5' | 120.0 |
C6—C5—H5 | 120.0 | C6'—C5'—H5' | 120.0 |
C1—C6—C5 | 120.18 (14) | C1'—C6'—C5' | 120.34 (14) |
C1—C6—C7 | 118.00 (13) | C1'—C6'—C7' | 118.48 (13) |
C5—C6—C7 | 121.83 (14) | C5'—C6'—C7' | 121.17 (14) |
O2—C7—O1 | 124.27 (14) | O2'—C7'—O1' | 123.57 (14) |
O2—C7—C6 | 124.32 (14) | O2'—C7'—C6' | 124.79 (14) |
O1—C7—C6 | 111.41 (12) | O1'—C7'—C6' | 111.64 (12) |
O1—C8—C9 | 107.38 (12) | O1'—C8'—C9' | 107.52 (12) |
O1—C8—H8A | 110.2 | O1'—C8'—H8'1 | 110.2 |
C9—C8—H8A | 110.2 | C9'—C8'—H8'1 | 110.2 |
O1—C8—H8B | 110.2 | O1'—C8'—H8'2 | 110.2 |
C9—C8—H8B | 110.2 | C9'—C8'—H8'2 | 110.2 |
H8A—C8—H8B | 108.5 | H8'1—C8'—H8'2 | 108.5 |
C8—C9—Cl1 | 111.97 (11) | C8'—C9'—Cl1' | 111.67 (11) |
C8—C9—H9A | 109.2 | C8'—C9'—H9'1 | 109.3 |
Cl1—C9—H9A | 109.2 | Cl1'—C9'—H9'1 | 109.3 |
C8—C9—H9B | 109.2 | C8'—C9'—H9'2 | 109.3 |
Cl1—C9—H9B | 109.2 | Cl1'—C9'—H9'2 | 109.3 |
H9A—C9—H9B | 107.9 | H9'1—C9'—H9'2 | 107.9 |
C6—C1—C2—C3 | 0.3 (2) | C6'—C1'—C2'—C3' | −0.3 (2) |
C1—C2—C3—C4 | −0.8 (2) | C1'—C2'—C3'—C4' | 0.4 (2) |
C1—C2—C3—N1 | 178.39 (13) | C1'—C2'—C3'—N1' | −179.86 (13) |
O3—N1—C3—C2 | 7.2 (2) | O3'—N1'—C3'—C4' | −171.12 (13) |
O4—N1—C3—C2 | −171.95 (14) | O4'—N1'—C3'—C4' | 8.8 (2) |
O3—N1—C3—C4 | −173.58 (14) | O3'—N1'—C3'—C2' | 9.1 (2) |
O4—N1—C3—C4 | 7.3 (2) | O4'—N1'—C3'—C2' | −170.90 (13) |
C2—C3—C4—C5 | 0.4 (2) | C2'—C3'—C4'—C5' | −0.6 (2) |
N1—C3—C4—C5 | −178.79 (13) | N1'—C3'—C4'—C5' | 179.68 (13) |
C3—C4—C5—C6 | 0.5 (2) | C3'—C4'—C5'—C6' | 0.6 (2) |
C2—C1—C6—C5 | 0.5 (2) | C2'—C1'—C6'—C5' | 0.4 (2) |
C2—C1—C6—C7 | −179.66 (14) | C2'—C1'—C6'—C7' | −179.20 (13) |
C4—C5—C6—C1 | −0.9 (2) | C4'—C5'—C6'—C1' | −0.5 (2) |
C4—C5—C6—C7 | 179.26 (14) | C4'—C5'—C6'—C7' | 179.00 (14) |
C8—O1—C7—O2 | 1.3 (2) | C8'—O1'—C7'—O2' | −0.4 (2) |
C8—O1—C7—C6 | −178.60 (13) | C8'—O1'—C7'—C6' | 179.34 (12) |
C1—C6—C7—O2 | −2.3 (2) | C1'—C6'—C7'—O2' | −5.3 (2) |
C5—C6—C7—O2 | 177.53 (15) | C5'—C6'—C7'—O2' | 175.17 (15) |
C1—C6—C7—O1 | 177.65 (13) | C1'—C6'—C7'—O1' | 174.96 (13) |
C5—C6—C7—O1 | −2.5 (2) | C5'—C6'—C7'—O1' | −4.60 (19) |
C7—O1—C8—C9 | −156.81 (13) | C7'—O1'—C8'—C9' | −166.85 (12) |
O1—C8—C9—Cl1 | −62.71 (15) | O1'—C8'—C9'—Cl1' | −66.44 (15) |
D—H···A | D—H | H···A | D···A | D—H···A |
C1—H1···Cl1′ | 0.95 | 2.79 | 3.6234 (18) | 147 |
C2′—H2′···O3′i | 0.95 | 2.50 | 3.318 (2) | 145 |
C4′—H4′···O2 | 0.95 | 2.40 | 3.223 (2) | 144 |
C5—H5···O2′ii | 0.95 | 2.42 | 3.205 (2) | 140 |
C5′—H5′···O1′ | 0.95 | 2.39 | 2.7112 (19) | 100 |
C9—H9B···O2′iii | 0.99 | 2.55 | 3.526 (2) | 167 |
Symmetry codes: (i) −x+2, −y+1, −z; (ii) −x+1, −y+1, −z+1; (iii) −x, −y+1, −z+1. |
Experimental details
Crystal data | |
Chemical formula | C9H8ClNO4 |
Mr | 229.61 |
Crystal system, space group | Monoclinic, P21/n |
Temperature (K) | 103 |
a, b, c (Å) | 4.9404 (10), 21.618 (5), 18.325 (4) |
β (°) | 90.441 (3) |
V (Å3) | 1957.0 (7) |
Z | 8 |
Radiation type | Mo Kα |
µ (mm−1) | 0.38 |
Crystal size (mm) | 0.40 × 0.20 × 0.20 |
Data collection | |
Diffractometer | Rigaku SPIDER |
Absorption correction | Multi-scan (ABSCOR; Higashi, 1995) |
Tmin, Tmax | 0.862, 0.927 |
No. of measured, independent and observed [I > 2σ(I)] reflections | 18618, 4466, 3781 |
Rint | 0.033 |
(sin θ/λ)max (Å−1) | 0.649 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.034, 0.084, 1.00 |
No. of reflections | 4466 |
No. of parameters | 271 |
H-atom treatment | H-atom parameters constrained |
Δρmax, Δρmin (e Å−3) | 0.34, −0.23 |
Computer programs: RAPID-AUTO (Rigaku, 2004), SHELXTL (Sheldrick, 2008).
D—H···A | D—H | H···A | D···A | D—H···A |
C1—H1···Cl1' | 0.95 | 2.79 | 3.6234 (18) | 147 |
C2'—H2'···O3'i | 0.95 | 2.50 | 3.318 (2) | 145 |
C4'—H4'···O2 | 0.95 | 2.40 | 3.223 (2) | 144 |
C5—H5···O2'ii | 0.95 | 2.42 | 3.205 (2) | 140 |
C9—H9B···O2'iii | 0.99 | 2.55 | 3.526 (2) | 167 |
Symmetry codes: (i) −x+2, −y+1, −z; (ii) −x+1, −y+1, −z+1; (iii) −x, −y+1, −z+1. |
Acknowledgements
This work was supported by the Science Foundation of the Health Department of Jiangsu Province, China (No. H200934).
References
Higashi, T. (1995). ABSCOR. Rigaku Corporation, Tokyo, Japan. Google Scholar
Rigaku (2004). RAPID-AUTO. Rigaku Corporation, Tokyo, Japan. Google Scholar
Sheldrick, G. M. (2008). Acta Cryst. A64, 112–122. Web of Science CrossRef CAS IUCr Journals Google Scholar
Wu, H., Xie, M.-H., Zou, P., Liu, Y.-L. & He, Y.-J. (2009). Acta Cryst. E65, o3096. Web of Science CSD CrossRef IUCr Journals Google Scholar
Zhang, A.-Y., Qian, B., Min, J. & Fang, Q.-X. (1995). J. Shanxi Normal Univ. (Nat. Sci. Ed.), 23, 44–47. CAS Google Scholar
Zhang, Z.-S., Wu, J.-G. & Deng, R.-W. (1990). J. Lanzhou Univ. (Nat. Sci. Ed.), 26, 69–75. CAS Google Scholar
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Benzoates are important intermediates in the chemistry of pigments and pharmaceuticals, which are widely used all over the world (Zhang et al., 1995; Zhang et al., 1990). The crystall structure of Methyl 4-nitrobenzoate has been reported (Wu et al., 2009). As an extension of our study, we report here the crystal structure of the title compound.
The asymmetric unit of the title compound (Fig.1) contains two crystallographically independent molecules in an asymmetric unit.The crystal data show that the bond lengths and angles are within expected ranges. The ester groups and the benzene rings in the two molecules are almost coplanar, as indicated by the dihedral angles of 2.4 (1)° (O1/O2/C6/C7; C1—C6) and 4.9 (1)° (O1'/O2'/C6'/C7'; C1'—C6'). The dihedral angle between the ring(C1—C6) and the ring(C1'—C6') is 92.7 (1)°.
In the cyrstal structure, adjacent molecules are linked together by the weak C—H···O and C—H···Cl hydrogen bonds (Table 1). Intramolecular C—H···O interactions are also observed. These hydrogen-bonding interactions stabilize the crystal structure.