organic compounds
of 4-formyl-2-nitrophenyl 4-chloro-2-nitrobenzoate
aDepartamento de Química, Facultad de Ciencias Naturales y Exactas, Universidad del Valle, Apartado 25360, Santiago de Cali, Colombia, and bInstituto de Física de São Carlos, IFSC, Universidade de São Paulo, USP, São Carlos, SP, Brazil
*Correspondence e-mail: rodimo26@yahoo.es
In the title compound, C14H7ClN2O7, the central ester moiety is essentially planar, with an r.m.s. deviation of 0.0113 Å. The ester group is twisted away from the chloro- and formyl-substituted rings by 84.60 (9) and 88.55 (9)°, respectively. The crystal packing shows intermolecular C—H⋯O interactions. These interactions generate R22(20) and R44(22) edge-fused rings parallel to (20-2).
Keywords: crystal structure; ester; hydrogen bonding; 4-chloro-2-nitrobenzoate.
CCDC reference: 1432812
1. Related literature
For related structures, see: Moreno-Fuquen et al. (2013, 2014). For hydrogen-bond details, see: Nardelli (1995).
2. Experimental
2.1. Crystal data
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2.2. Data collection
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2.3. Refinement
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Data collection: COLLECT (Nonius, 2000); cell SCALEPACK (Otwinowski & Minor, 1997); data reduction: DENZO (Otwinowski & Minor, 1997) and SCALEPACK; program(s) used to solve structure: SIR2014 (Burla et al., 2015); program(s) used to refine structure: SHELXL2014 (Sheldrick, 2015); molecular graphics: ORTEP-3 for Windows (Farrugia, 2012) and Mercury (Macrae et al., 2006); software used to prepare material for publication: WinGX (Farrugia, 2012).
Supporting information
CCDC reference: 1432812
https://doi.org/10.1107/S205698901502006X/hg5461sup1.cif
contains datablock I. DOI:Structure factors: contains datablock I. DOI: https://doi.org/10.1107/S205698901502006X/hg5461Isup2.hkl
Supporting information file. DOI: https://doi.org/10.1107/S205698901502006X/hg5461Isup3.cml
The title molecule was obtained through a two-step reaction: 4-Chloro-2-nitrobenzoic acid (0.200 g, 0.992 mmol) was refluxed with thionyl chloride (5 mL) in acetonitrile for an hour. Then, the thionyl chloride was distilled to purify the 4-chloro-2-nitro benzoyl chloride obtained as a pale-yellow translucent liquid. The same reaction flask was rearranged and an equimolar solution of 4-hydroxy-3-nitrobenzaldehyde (0.166 g, 0.992 mmol) in acetonitrile was dropped inside it with 0.03 mL of pyridine. The reaction mixture was taken to room temperature with constant stirring for about an hour. A shiny yellow solid was obtained after leaving the solvent to evaporate. Yellow crystals; m.p 417 (1) K.
All H-atoms were located from difference maps and were positioned geometrically [C—H = 0.93 Å for aromatic and were refined using a riding-model approximation with Uiso(H) constrained to 1.2 times Ueq of the respective parent atom. Formyl H141 atom was found from fourier difference maps and its coordinates refined freely.
The title compound 4-Formyl-2-nitrophenyl 4-chloro-2-nitrobenzoate (FClNB) (I), is part of a series of studies on the structural properties of the formyl nitro aryl benzoates developed by our research group. Of the many formyl aryl derivative systems studied in our group, can be highlighted the 4-formyl-2-nitrophenyl 4-bromo benzoate (FBrB) (Moreno-Fuquen et al., 2013) and 4-Formyl-2-nitrophenyl benzoate (FB) (Moreno-Fuquen et al., 2014) such as those closest to (I). The molecular structure of (I) is shown in Fig. 1. Bond lengths and bond angles of central ester segment show marked similarity with (FBrB) and (FB). The central ester moiety, C1-C7(O1)-O2-C8, is essentially planar with a r.m.s deviation of fitted atoms of 0.0113 Å. The ester group is twisted away from the chloro and formyl rings by 84.60 (9)° and 88.55 (9)°, respectively.The nitro groups form dihedral angles with the chloro and formyl rings to which it is attached of 11.6 (2)% and 35.03 (8)°. The nitro groups of different rings are anti to each other. Comparing (I) with the two aforementioned similar structures, reveals that significant differences in bond lengths and bond angles are not observed. The crystal packing shows no classical hydrogen bonds and it is stabilized by weak C-H···O intermolecular interactions. The C3-H3···O5i, C5-H5···O3ii and C12-H12···O6iii hydrogen bond interactions are responsible for crystal growth parallel to (2 0 \-2) (see Fig 2). The C3 atom at (x,y,z) acts as hydrogen bond donor to formyl O5 atom at (i= x+1,+y,+z+1), the C5 atom acts as hydrogen bond donor to O3 atom of the nitro group at (ii= x,+y+1,+z) and the C12 atom acts as hydrogen bond donor to O6 atom of the nitro group at (iii= x,+y-1,+z). These interactions generate R22(20) and R44(22) edge-fused rings (see Table 1, Nardelli, 1995). Complement crystal growth, C12-H12···O1 interactions, wherein molecules running parallel to (2 0 2), intertwine with other molecules, forming dimers along [100] (see Fig. 3).
For related structures, see: Moreno-Fuquen et al. (2013, 2014). For hydrogen-bond details, see: Nardelli (1995).
Data collection: COLLECT (Nonius, 2000); cell
SCALEPACK (Otwinowski & Minor, 1997); data reduction: DENZO and SCALEPACK (Otwinowski & Minor, 1997; program(s) used to solve structure: SIR2014 (Burla et al., 2015); program(s) used to refine structure: SHELXL2014 (Sheldrick, 2015); molecular graphics: ORTEP-3 for Windows (Farrugia, 2012) and Mercury (Macrae et al., 2006); software used to prepare material for publication: WinGX (Farrugia, 2012).Fig. 1. The molecular structure of (I) with displacement ellipsoids drawn at the 50% probability level. H atoms are shown as spheres of arbitrary radius. | |
Fig. 2. Part of the crystal structure of (I), showing the formation of R22(20) and R44(22) edge-fused rings parallel to (202). [Symmetry codes: (i) x+1,+y,+z+1; (ii) x,+y+1,+z; (iii) x,+y-1,+z ]. | |
Fig. 3. Part of the crystal structure of (I), showing the formation of dimers along [100]. [Symmetry codes: (iv) -x+1,-y+1,-z]. |
C14H7ClN2O7 | F(000) = 356 |
Mr = 350.67 | Dx = 1.570 Mg m−3 |
Triclinic, P1 | Melting point: 417(1) K |
a = 7.7366 (2) Å | Mo Kα radiation, λ = 0.71073 Å |
b = 7.9480 (2) Å | Cell parameters from 4404 reflections |
c = 12.6539 (5) Å | θ = 2.9–26.4° |
α = 90.0655 (11)° | µ = 0.30 mm−1 |
β = 100.3204 (11)° | T = 295 K |
γ = 104.0633 (12)° | Needle, colourless |
V = 741.75 (4) Å3 | 0.76 × 0.13 × 0.06 mm |
Z = 2 |
Nonius KappaCCD diffractometer | 2177 reflections with I > 2σ(I) |
Radiation source: fine-focus sealed tube | Rint = 0.046 |
Graphite monochromator | θmax = 26.4°, θmin = 2.9° |
CCD rotation images, thick slices scans | h = −9→9 |
5322 measured reflections | k = −9→8 |
3018 independent reflections | l = −15→15 |
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)] = 0.060 | Hydrogen site location: inferred from neighbouring sites |
wR(F2) = 0.194 | H atoms treated by a mixture of independent and constrained refinement |
S = 1.03 | w = 1/[σ2(Fo2) + (0.1103P)2 + 0.1814P] where P = (Fo2 + 2Fc2)/3 |
3018 reflections | (Δ/σ)max < 0.001 |
221 parameters | Δρmax = 0.59 e Å−3 |
0 restraints | Δρmin = −0.37 e Å−3 |
C14H7ClN2O7 | γ = 104.0633 (12)° |
Mr = 350.67 | V = 741.75 (4) Å3 |
Triclinic, P1 | Z = 2 |
a = 7.7366 (2) Å | Mo Kα radiation |
b = 7.9480 (2) Å | µ = 0.30 mm−1 |
c = 12.6539 (5) Å | T = 295 K |
α = 90.0655 (11)° | 0.76 × 0.13 × 0.06 mm |
β = 100.3204 (11)° |
Nonius KappaCCD diffractometer | 2177 reflections with I > 2σ(I) |
5322 measured reflections | Rint = 0.046 |
3018 independent reflections |
R[F2 > 2σ(F2)] = 0.060 | 0 restraints |
wR(F2) = 0.194 | H atoms treated by a mixture of independent and constrained refinement |
S = 1.03 | Δρmax = 0.59 e Å−3 |
3018 reflections | Δρmin = −0.37 e Å−3 |
221 parameters |
Experimental. IR spectra was recorded on a FT—IR SHIMADZU IR-Affinity-1 spectrophotometer. IR (KBr), cm-1, 3449 and 3090 (aromatic C-H); 1767 (ester, C=O); 1216 (ester C-O); 1040 (ester C8-O6); 1706 (benzaldehyde C=O); 1539, 1349 (nitro-NO2 aryl ring); 1487, 1277 (nitro-NO2 acyl ring); 1090 (C=C): 754 (C-Cl). |
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 > 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 | 1.36368 (11) | 1.17195 (11) | 0.56085 (6) | 0.0863 (3) | |
O2 | 0.8864 (2) | 0.8852 (2) | 0.07551 (13) | 0.0561 (4) | |
O6 | 0.7439 (2) | 1.2200 (2) | −0.13342 (17) | 0.0714 (5) | |
O1 | 0.6563 (2) | 0.8349 (3) | 0.16669 (15) | 0.0732 (6) | |
N2 | 0.7314 (3) | 1.1215 (3) | −0.06000 (19) | 0.0578 (5) | |
C3 | 1.1840 (4) | 0.9146 (3) | 0.4150 (2) | 0.0606 (6) | |
H3 | 1.2487 | 0.8444 | 0.4551 | 0.073* | |
C10 | 0.5786 (3) | 0.8747 (3) | −0.18505 (19) | 0.0531 (5) | |
H10 | 0.5311 | 0.9505 | −0.2307 | 0.064* | |
O4 | 0.9084 (3) | 0.5985 (2) | 0.22127 (17) | 0.0810 (6) | |
C9 | 0.6900 (3) | 0.9348 (3) | −0.08815 (18) | 0.0482 (5) | |
C2 | 1.0593 (3) | 0.8503 (3) | 0.3237 (2) | 0.0555 (6) | |
C1 | 0.9590 (3) | 0.9493 (3) | 0.26146 (18) | 0.0526 (6) | |
C13 | 0.7251 (4) | 0.6489 (3) | −0.0490 (2) | 0.0625 (6) | |
H13 | 0.7755 | 0.5736 | −0.0044 | 0.075* | |
C11 | 0.5383 (3) | 0.6984 (3) | −0.21338 (19) | 0.0566 (6) | |
C8 | 0.7624 (3) | 0.8225 (3) | −0.01961 (19) | 0.0512 (5) | |
N1 | 1.0326 (4) | 0.6653 (3) | 0.2922 (2) | 0.0769 (7) | |
C4 | 1.2098 (3) | 1.0881 (3) | 0.4452 (2) | 0.0593 (6) | |
C12 | 0.6122 (4) | 0.5878 (3) | −0.1456 (2) | 0.0649 (7) | |
H12 | 0.5853 | 0.4703 | −0.1654 | 0.078* | |
C6 | 0.9911 (4) | 1.1222 (3) | 0.2933 (2) | 0.0657 (7) | |
H6 | 0.9285 | 1.1935 | 0.2527 | 0.079* | |
C5 | 1.1161 (4) | 1.1901 (3) | 0.3853 (2) | 0.0686 (7) | |
H5 | 1.1359 | 1.3065 | 0.4062 | 0.082* | |
O7 | 0.7490 (3) | 1.1674 (3) | 0.03363 (18) | 0.0876 (7) | |
C7 | 0.8143 (3) | 0.8800 (3) | 0.1663 (2) | 0.0557 (6) | |
O5 | 0.3385 (4) | 0.7111 (4) | −0.37667 (18) | 0.1035 (8) | |
C14 | 0.4168 (4) | 0.6297 (5) | −0.3168 (3) | 0.0772 (8) | |
O3 | 1.1442 (5) | 0.5914 (3) | 0.3367 (3) | 0.1369 (13) | |
H141 | 0.410 (5) | 0.511 (5) | −0.334 (3) | 0.108 (12)* |
U11 | U22 | U33 | U12 | U13 | U23 | |
Cl1 | 0.0856 (6) | 0.0964 (6) | 0.0681 (5) | 0.0142 (4) | 0.0024 (4) | −0.0178 (4) |
O2 | 0.0450 (8) | 0.0656 (10) | 0.0572 (10) | 0.0139 (7) | 0.0080 (7) | 0.0066 (7) |
O6 | 0.0663 (11) | 0.0533 (10) | 0.0999 (14) | 0.0223 (8) | 0.0190 (10) | 0.0204 (10) |
O1 | 0.0483 (10) | 0.0982 (14) | 0.0721 (12) | 0.0133 (9) | 0.0148 (8) | 0.0026 (10) |
N2 | 0.0483 (10) | 0.0498 (11) | 0.0785 (14) | 0.0166 (8) | 0.0136 (9) | 0.0053 (10) |
C3 | 0.0641 (14) | 0.0626 (15) | 0.0569 (14) | 0.0214 (12) | 0.0082 (11) | 0.0086 (11) |
C10 | 0.0494 (12) | 0.0564 (13) | 0.0582 (13) | 0.0197 (10) | 0.0132 (10) | 0.0118 (10) |
O4 | 0.0919 (14) | 0.0577 (11) | 0.0816 (14) | 0.0053 (10) | 0.0037 (11) | −0.0034 (10) |
C9 | 0.0442 (11) | 0.0452 (11) | 0.0592 (13) | 0.0149 (9) | 0.0149 (10) | 0.0058 (9) |
C2 | 0.0608 (13) | 0.0485 (12) | 0.0578 (13) | 0.0155 (10) | 0.0104 (11) | 0.0047 (10) |
C1 | 0.0491 (12) | 0.0541 (13) | 0.0566 (13) | 0.0159 (10) | 0.0106 (10) | 0.0060 (10) |
C13 | 0.0693 (15) | 0.0505 (13) | 0.0694 (16) | 0.0229 (11) | 0.0062 (12) | 0.0101 (11) |
C11 | 0.0574 (13) | 0.0560 (14) | 0.0584 (14) | 0.0161 (11) | 0.0124 (11) | 0.0032 (10) |
C8 | 0.0449 (11) | 0.0550 (13) | 0.0552 (13) | 0.0151 (10) | 0.0091 (9) | 0.0070 (10) |
N1 | 0.0989 (18) | 0.0537 (13) | 0.0752 (16) | 0.0240 (13) | 0.0014 (14) | 0.0101 (11) |
C4 | 0.0607 (14) | 0.0613 (14) | 0.0554 (13) | 0.0121 (11) | 0.0139 (11) | −0.0029 (11) |
C12 | 0.0722 (16) | 0.0493 (13) | 0.0728 (16) | 0.0169 (12) | 0.0101 (13) | 0.0017 (12) |
C6 | 0.0697 (15) | 0.0599 (15) | 0.0719 (17) | 0.0282 (12) | 0.0078 (13) | 0.0054 (12) |
C5 | 0.0775 (17) | 0.0524 (14) | 0.0781 (17) | 0.0197 (12) | 0.0149 (14) | −0.0040 (12) |
O7 | 0.1177 (18) | 0.0639 (12) | 0.0821 (14) | 0.0263 (11) | 0.0157 (13) | −0.0101 (10) |
C7 | 0.0505 (13) | 0.0568 (13) | 0.0626 (14) | 0.0177 (10) | 0.0112 (11) | 0.0081 (10) |
O5 | 0.1107 (18) | 0.121 (2) | 0.0679 (14) | 0.0290 (16) | −0.0113 (13) | 0.0103 (13) |
C14 | 0.0740 (18) | 0.080 (2) | 0.0723 (19) | 0.0134 (16) | 0.0074 (15) | −0.0048 (16) |
O3 | 0.186 (3) | 0.0732 (15) | 0.137 (2) | 0.0626 (18) | −0.048 (2) | −0.0010 (15) |
Cl1—C4 | 1.730 (3) | C2—N1 | 1.478 (3) |
O2—C7 | 1.360 (3) | C1—C6 | 1.382 (3) |
O2—C8 | 1.404 (3) | C1—C7 | 1.491 (3) |
O6—N2 | 1.217 (3) | C13—C8 | 1.376 (3) |
O1—C7 | 1.189 (3) | C13—C12 | 1.379 (4) |
N2—O7 | 1.213 (3) | C13—H13 | 0.9300 |
N2—C9 | 1.469 (3) | C11—C12 | 1.380 (3) |
C3—C2 | 1.373 (3) | C11—C14 | 1.484 (4) |
C3—C4 | 1.388 (4) | N1—O3 | 1.216 (3) |
C3—H3 | 0.9300 | C4—C5 | 1.359 (4) |
C10—C9 | 1.377 (3) | C12—H12 | 0.9300 |
C10—C11 | 1.391 (3) | C6—C5 | 1.387 (4) |
C10—H10 | 0.9300 | C6—H6 | 0.9300 |
O4—N1 | 1.205 (3) | C5—H5 | 0.9300 |
C9—C8 | 1.390 (3) | O5—C14 | 1.177 (4) |
C2—C1 | 1.386 (3) | C14—H141 | 0.95 (4) |
C7—O2—C8 | 115.60 (17) | C13—C8—C9 | 120.0 (2) |
O7—N2—O6 | 124.5 (2) | C13—C8—O2 | 118.7 (2) |
O7—N2—C9 | 118.5 (2) | C9—C8—O2 | 121.1 (2) |
O6—N2—C9 | 117.1 (2) | O4—N1—O3 | 123.7 (3) |
C2—C3—C4 | 117.5 (2) | O4—N1—C2 | 119.0 (2) |
C2—C3—H3 | 121.2 | O3—N1—C2 | 117.2 (3) |
C4—C3—H3 | 121.2 | C5—C4—C3 | 120.8 (2) |
C9—C10—C11 | 118.8 (2) | C5—C4—Cl1 | 120.7 (2) |
C9—C10—H10 | 120.6 | C3—C4—Cl1 | 118.6 (2) |
C11—C10—H10 | 120.6 | C13—C12—C11 | 121.0 (2) |
C10—C9—C8 | 121.0 (2) | C13—C12—H12 | 119.5 |
C10—C9—N2 | 117.9 (2) | C11—C12—H12 | 119.5 |
C8—C9—N2 | 121.1 (2) | C1—C6—C5 | 120.5 (2) |
C3—C2—C1 | 123.4 (2) | C1—C6—H6 | 119.8 |
C3—C2—N1 | 117.2 (2) | C5—C6—H6 | 119.8 |
C1—C2—N1 | 119.4 (2) | C4—C5—C6 | 120.6 (2) |
C6—C1—C2 | 117.2 (2) | C4—C5—H5 | 119.7 |
C6—C1—C7 | 118.3 (2) | C6—C5—H5 | 119.7 |
C2—C1—C7 | 124.5 (2) | O1—C7—O2 | 123.6 (2) |
C8—C13—C12 | 119.2 (2) | O1—C7—C1 | 125.7 (2) |
C8—C13—H13 | 120.4 | O2—C7—C1 | 110.53 (18) |
C12—C13—H13 | 120.4 | O5—C14—C11 | 125.2 (3) |
C12—C11—C10 | 120.0 (2) | O5—C14—H141 | 121 (2) |
C12—C11—C14 | 120.1 (2) | C11—C14—H141 | 114 (2) |
C10—C11—C14 | 119.9 (2) | ||
C11—C10—C9—C8 | 0.3 (3) | C3—C2—N1—O4 | 170.3 (2) |
C11—C10—C9—N2 | 179.76 (19) | C1—C2—N1—O4 | −9.4 (4) |
O7—N2—C9—C10 | 145.2 (2) | C3—C2—N1—O3 | −13.2 (4) |
O6—N2—C9—C10 | −34.1 (3) | C1—C2—N1—O3 | 167.1 (3) |
O7—N2—C9—C8 | −35.4 (3) | C2—C3—C4—C5 | −0.8 (4) |
O6—N2—C9—C8 | 145.3 (2) | C2—C3—C4—Cl1 | 179.11 (18) |
C4—C3—C2—C1 | −0.3 (4) | C8—C13—C12—C11 | 0.9 (4) |
C4—C3—C2—N1 | −180.0 (2) | C10—C11—C12—C13 | 0.5 (4) |
C3—C2—C1—C6 | 1.3 (4) | C14—C11—C12—C13 | −179.9 (2) |
N1—C2—C1—C6 | −179.0 (2) | C2—C1—C6—C5 | −1.4 (4) |
C3—C2—C1—C7 | −175.8 (2) | C7—C1—C6—C5 | 175.9 (2) |
N1—C2—C1—C7 | 3.9 (4) | C3—C4—C5—C6 | 0.7 (4) |
C9—C10—C11—C12 | −1.1 (3) | Cl1—C4—C5—C6 | −179.2 (2) |
C9—C10—C11—C14 | 179.3 (2) | C1—C6—C5—C4 | 0.5 (4) |
C12—C13—C8—C9 | −1.6 (4) | C8—O2—C7—O1 | −4.0 (3) |
C12—C13—C8—O2 | −176.0 (2) | C8—O2—C7—C1 | 179.86 (17) |
C10—C9—C8—C13 | 1.0 (3) | C6—C1—C7—O1 | −81.2 (3) |
N2—C9—C8—C13 | −178.4 (2) | C2—C1—C7—O1 | 95.9 (3) |
C10—C9—C8—O2 | 175.29 (18) | C6—C1—C7—O2 | 94.8 (3) |
N2—C9—C8—O2 | −4.1 (3) | C2—C1—C7—O2 | −88.1 (3) |
C7—O2—C8—C13 | −89.5 (3) | C12—C11—C14—O5 | 175.0 (3) |
C7—O2—C8—C9 | 96.2 (2) | C10—C11—C14—O5 | −5.4 (5) |
D—H···A | D—H | H···A | D···A | D—H···A |
C3—H3···O5i | 0.93 | 2.44 | 3.289 (3) | 151 |
C5—H5···O3ii | 0.93 | 2.42 | 3.212 (4) | 143 |
C12—H12···O6iii | 0.93 | 2.58 | 3.317 (3) | 137 |
C12—H12···O1iv | 0.93 | 2.68 | 3.476 (3) | 145 |
Symmetry codes: (i) x+1, y, z+1; (ii) x, y+1, z; (iii) x, y−1, z; (iv) −x+1, −y+1, −z. |
D—H···A | D—H | H···A | D···A | D—H···A |
C3—H3···O5i | 0.93 | 2.44 | 3.289 (3) | 151.2 |
C5—H5···O3ii | 0.93 | 2.42 | 3.212 (4) | 142.8 |
C12—H12···O6iii | 0.93 | 2.58 | 3.317 (3) | 137.0 |
C12—H12···O1iv | 0.93 | 2.68 | 3.476 (3) | 144.5 |
Symmetry codes: (i) x+1, y, z+1; (ii) x, y+1, z; (iii) x, y−1, z; (iv) −x+1, −y+1, −z. |
Acknowledgements
RMF is grateful to the Universidad del Valle, Colombia, for partial financial support.
References
Burla, M. C., Caliandro, R., Carrozzini, B., Cascarano, G. L., Cuocci, C., Giacovazzo, C., Mallamo, M., Mazzone, A. & Polidori, G. (2015). J. Appl. Cryst. 48, 306–309. Web of Science CrossRef CAS IUCr Journals Google Scholar
Farrugia, L. J. (2012). J. Appl. Cryst. 45, 849–854. Web of Science CrossRef CAS IUCr Journals Google Scholar
Macrae, C. F., Edgington, P. R., McCabe, P., Pidcock, E., Shields, G. P., Taylor, R., Towler, M. & van de Streek, J. (2006). J. Appl. Cryst. 39, 453–457. Web of Science CSD CrossRef CAS IUCr Journals Google Scholar
Moreno-Fuquen, R., Hernandez, G., Ellena, J., De Simone, C. A. & Tenorio, J. C. (2013). Acta Cryst. E69, o793. CSD CrossRef IUCr Journals Google Scholar
Moreno-Fuquen, R., Hernandez, G. & Kennedy, A. R. (2014). Acta Cryst. E70, o268. CSD CrossRef IUCr Journals Google Scholar
Nardelli, M. (1995). J. Appl. Cryst. 28, 659. CrossRef IUCr Journals Google Scholar
Nonius (2000). COLLECT. Nonius BV, Delft, The Netherlands. Google Scholar
Otwinowski, Z. & Minor, W. (1997). Methods in Enzymology, Vol. 276, Macromolecular Crystallography, Part A, edited by C. W. Carter Jr & R. M. Sweet, pp. 307–326. New York: Academic Press. Google Scholar
Sheldrick, G. M. (2015). Acta Cryst. C71, 3–8. Web of Science CrossRef IUCr Journals Google Scholar
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The title compound 4-Formyl-2-nitrophenyl 4-chloro-2-nitrobenzoate (FClNB) (I), is part of a series of studies on the structural properties of the formyl nitro aryl benzoates developed by our research group. Of the many formyl aryl derivative systems studied in our group, can be highlighted the 4-formyl-2-nitrophenyl 4-bromo benzoate (FBrB) (Moreno-Fuquen et al., 2013) and 4-Formyl-2-nitrophenyl benzoate (FB) (Moreno-Fuquen et al., 2014) such as those closest to (I). The molecular structure of (I) is shown in Fig. 1. Bond lengths and bond angles of central ester segment show marked similarity with (FBrB) and (FB). The central ester moiety, C1-C7(O1)-O2-C8, is essentially planar with a r.m.s deviation of fitted atoms of 0.0113 Å. The ester group is twisted away from the chloro and formyl rings by 84.60 (9)° and 88.55 (9)°, respectively.The nitro groups form dihedral angles with the chloro and formyl rings to which it is attached of 11.6 (2)% and 35.03 (8)°. The nitro groups of different rings are anti to each other. Comparing (I) with the two aforementioned similar structures, reveals that significant differences in bond lengths and bond angles are not observed. The crystal packing shows no classical hydrogen bonds and it is stabilized by weak C-H···O intermolecular interactions. The C3-H3···O5i, C5-H5···O3ii and C12-H12···O6iii hydrogen bond interactions are responsible for crystal growth parallel to (2 0 \-2) (see Fig 2). The C3 atom at (x,y,z) acts as hydrogen bond donor to formyl O5 atom at (i= x+1,+y,+z+1), the C5 atom acts as hydrogen bond donor to O3 atom of the nitro group at (ii= x,+y+1,+z) and the C12 atom acts as hydrogen bond donor to O6 atom of the nitro group at (iii= x,+y-1,+z). These interactions generate R22(20) and R44(22) edge-fused rings (see Table 1, Nardelli, 1995). Complement crystal growth, C12-H12···O1 interactions, wherein molecules running parallel to (2 0 2), intertwine with other molecules, forming dimers along [100] (see Fig. 3).