organic compounds
2,4,6-Trinitrophenyl 3-chlorobenzoate
aDepartamento de Química, Facultad de Ciencias, 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 benzoate derivative, C13H6ClN3O8, the planes of the benzene rings form a dihedral angle of 73.59 (7)°. The central ester unit forms an angle of 20.38 (12)° with the chloro-substituted benzene ring. In the crystal, molecules are linked by weak C—H⋯O interactions, forming helical chains along [101] and [100].
Related literature
For investigations on reaction kinetics, see: Kirkien-Konasiewicz & Maccoll (1964); Belousova et al. (2000). For spectroscopic and theoretical studies, see: Ibrahim et al. (2011). For bond-length data, see: Allen et al. (1987). For similar structures, see: Moreno-Fuquen et al. (2012a,b,c, 2013). For hydrogen bonding, see: Nardelli (1995) and for hydrogen-bond motifs, see: Etter et al. (1990). For a description of the Cambridge Structural Database, see: Allen (2002).
Experimental
Crystal data
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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: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); 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
10.1107/S1600536813013792/hg5316sup1.cif
contains datablocks I, global. DOI:Structure factors: contains datablock I. DOI: 10.1107/S1600536813013792/hg5316Isup2.hkl
Supporting information file. DOI: 10.1107/S1600536813013792/hg5316Isup3.cml
The reagents and solvents for the synthesis were obtained from the Aldrich Chemical Co., and were used without additional purification. The title molecule was obtained through a two-step reaction. First the 3-chlorobenzoic acid (0.20g, 0.554 mmol) was refluxed in an excess of thionyl chloride (10 ml) during an hour. Then thionyl chloride was distilled off under reduced pressure to purify the 3-chorobenzoyl chloride obtained as a pale yellow traslucent liquid. The same reaction flask was rearranged and a solution of picric acid (0.12 g, 0.554 mmol) in acetonitrile was added dropwise with constant stirring. The reaction mixture was left to reflux for about an hour. A pale yellow solid was obtained after leaving the solvent to evaporate. The solid was washed with distilled water and cold methanol to eliminate impurities. Crystals of good quality and suitable for single-crystal X-ray diffraction were grown from acetonitrile. IR spectra were recorded on a FT—IR SHIMADZU IR-Affinity-1 spectrophotometer. Pale Yellow crystals; yield 65%; m.p 408 (1)K. IR (KBr) 3092.32 cm-1 (aromatic C—H); 1763.27 cm-1 (ester C=O); 1615.65 cm-1 (C=C); 1546.61 cm-1, 1340.90 cm-1 (–NO2); 1216.82 cm-1 (C(=O)—O).
All the hydrogen atoms attached to C atoms were positioned at geometrically idealized positions and treated as riding with C-H= 0.93 Å with Uiso(H) = 1.2 Ueq(C).
Data collection: COLLECT (Nonius, 2000); cell
SCALEPACK (Otwinowski & Minor, 1997); data reduction: DENZO and SCALEPACK (Otwinowski & Minor, 1997); program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); 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. Molecular conformation and atom numbering scheme for the title compound 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), forming one-dimensional helical chains, along [101]. Symmetry code: (i) -x+2,-y,-z+2; (ii) -x+1,-y,-z+1. | |
Fig. 3. Part of the crystal structure of (I), showing the formation of chains which running along along [100]. Symmetry code: (iii) -x+2,+y-1/2,-z+3/2; (iv) -x+1,+y+1/2,-z+3/2. |
C13H6ClN3O8 | F(000) = 744 |
Mr = 367.66 | Dx = 1.634 Mg m−3 |
Monoclinic, P21/c | Melting point: 408(1) K |
Hall symbol: -P 2ybc | Mo Kα radiation, λ = 0.71073 Å |
a = 11.0633 (4) Å | Cell parameters from 6920 reflections |
b = 9.6560 (4) Å | θ = 2.6–27.5° |
c = 14.0251 (6) Å | µ = 0.31 mm−1 |
β = 94.009 (2)° | T = 295 K |
V = 1494.60 (10) Å3 | Block, pale-yellow |
Z = 4 | 0.24 × 0.24 × 0.17 mm |
Nonius KappaCCD diffractometer | 2015 reflections with I > 2σ(I) |
Radiation source: fine-focus sealed tube | Rint = 0.069 |
Graphite monochromator | θmax = 27.5°, θmin = 2.6° |
CCD rotation images, thick slices scans | h = −13→14 |
16939 measured reflections | k = −11→12 |
3383 independent reflections | l = −17→18 |
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)] = 0.051 | Hydrogen site location: inferred from neighbouring sites |
wR(F2) = 0.162 | H-atom parameters constrained |
S = 1.00 | w = 1/[σ2(Fo2) + (0.0973P)2] where P = (Fo2 + 2Fc2)/3 |
3383 reflections | (Δ/σ)max < 0.001 |
227 parameters | Δρmax = 0.32 e Å−3 |
0 restraints | Δρmin = −0.27 e Å−3 |
C13H6ClN3O8 | V = 1494.60 (10) Å3 |
Mr = 367.66 | Z = 4 |
Monoclinic, P21/c | Mo Kα radiation |
a = 11.0633 (4) Å | µ = 0.31 mm−1 |
b = 9.6560 (4) Å | T = 295 K |
c = 14.0251 (6) Å | 0.24 × 0.24 × 0.17 mm |
β = 94.009 (2)° |
Nonius KappaCCD diffractometer | 2015 reflections with I > 2σ(I) |
16939 measured reflections | Rint = 0.069 |
3383 independent reflections |
R[F2 > 2σ(F2)] = 0.051 | 0 restraints |
wR(F2) = 0.162 | H-atom parameters constrained |
S = 1.00 | Δρmax = 0.32 e Å−3 |
3383 reflections | Δρmin = −0.27 e Å−3 |
227 parameters |
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 | ||
Cl | 0.56852 (7) | −0.00919 (7) | 0.28977 (5) | 0.0682 (3) | |
O7 | 0.71179 (13) | 0.23513 (17) | 0.69696 (10) | 0.0502 (4) | |
O8 | 0.84485 (15) | 0.14324 (18) | 0.60062 (12) | 0.0578 (5) | |
C13 | 0.6511 (2) | 0.0995 (2) | 0.45876 (16) | 0.0471 (5) | |
H13 | 0.7174 | 0.0411 | 0.4550 | 0.057* | |
C3 | 0.8964 (2) | 0.1510 (2) | 0.91560 (16) | 0.0465 (5) | |
H3 | 0.9003 | 0.0823 | 0.9622 | 0.056* | |
C1 | 0.80334 (19) | 0.2457 (2) | 0.76791 (15) | 0.0440 (5) | |
N2 | 1.0634 (2) | 0.2709 (2) | 1.00374 (16) | 0.0597 (6) | |
C8 | 0.6420 (2) | 0.1866 (2) | 0.53711 (16) | 0.0464 (5) | |
C5 | 0.9641 (2) | 0.3704 (2) | 0.85707 (17) | 0.0499 (6) | |
H5 | 1.0150 | 0.4469 | 0.8641 | 0.060* | |
N1 | 0.7383 (2) | 0.0189 (2) | 0.82752 (16) | 0.0566 (5) | |
C7 | 0.7442 (2) | 0.1841 (2) | 0.61029 (16) | 0.0474 (5) | |
C2 | 0.81502 (19) | 0.1428 (2) | 0.83739 (16) | 0.0441 (5) | |
C6 | 0.8789 (2) | 0.3605 (2) | 0.78057 (16) | 0.0470 (5) | |
O3 | 1.07187 (19) | 0.17305 (19) | 1.05824 (15) | 0.0776 (6) | |
C12 | 0.5594 (2) | 0.1017 (2) | 0.38669 (16) | 0.0503 (6) | |
O6 | 0.8224 (2) | 0.4610 (2) | 0.63360 (14) | 0.0802 (6) | |
C4 | 0.9719 (2) | 0.2641 (2) | 0.92272 (16) | 0.0469 (5) | |
N3 | 0.8689 (2) | 0.4788 (2) | 0.71367 (16) | 0.0587 (6) | |
O1 | 0.7462 (2) | −0.0505 (2) | 0.75600 (16) | 0.0866 (7) | |
O5 | 0.9087 (2) | 0.5889 (2) | 0.74352 (17) | 0.0942 (8) | |
C9 | 0.5427 (2) | 0.2730 (3) | 0.54277 (18) | 0.0579 (6) | |
H9 | 0.5360 | 0.3292 | 0.5960 | 0.069* | |
O2 | 0.6754 (2) | −0.0070 (2) | 0.89145 (18) | 0.0891 (7) | |
O4 | 1.1242 (2) | 0.3733 (2) | 1.01268 (17) | 0.1025 (8) | |
C11 | 0.4618 (2) | 0.1893 (3) | 0.3903 (2) | 0.0652 (7) | |
H11 | 0.4016 | 0.1910 | 0.3406 | 0.078* | |
C10 | 0.4542 (3) | 0.2748 (3) | 0.4686 (2) | 0.0697 (8) | |
H10 | 0.3884 | 0.3343 | 0.4713 | 0.084* |
U11 | U22 | U33 | U12 | U13 | U23 | |
Cl | 0.0769 (5) | 0.0784 (5) | 0.0485 (4) | −0.0108 (3) | −0.0009 (3) | −0.0157 (3) |
O7 | 0.0480 (9) | 0.0652 (10) | 0.0368 (9) | 0.0050 (7) | −0.0020 (7) | −0.0033 (7) |
O8 | 0.0538 (10) | 0.0734 (11) | 0.0453 (10) | 0.0105 (8) | −0.0036 (8) | −0.0074 (8) |
C13 | 0.0495 (12) | 0.0508 (13) | 0.0408 (12) | 0.0009 (10) | 0.0008 (10) | 0.0015 (10) |
C3 | 0.0558 (13) | 0.0431 (12) | 0.0403 (12) | −0.0014 (10) | 0.0003 (10) | 0.0003 (9) |
C1 | 0.0440 (12) | 0.0551 (13) | 0.0326 (11) | 0.0029 (10) | 0.0007 (9) | −0.0035 (9) |
N2 | 0.0611 (13) | 0.0580 (13) | 0.0574 (14) | −0.0079 (10) | −0.0132 (10) | −0.0038 (10) |
C8 | 0.0477 (13) | 0.0512 (13) | 0.0396 (12) | −0.0023 (10) | −0.0010 (10) | 0.0024 (10) |
C5 | 0.0533 (13) | 0.0472 (12) | 0.0491 (14) | −0.0072 (10) | 0.0042 (11) | −0.0023 (10) |
N1 | 0.0571 (12) | 0.0555 (12) | 0.0553 (13) | −0.0098 (9) | −0.0103 (10) | 0.0040 (10) |
C7 | 0.0533 (14) | 0.0499 (13) | 0.0385 (12) | 0.0029 (10) | −0.0002 (10) | −0.0027 (10) |
C2 | 0.0453 (12) | 0.0461 (12) | 0.0405 (12) | −0.0057 (9) | 0.0004 (10) | −0.0036 (9) |
C6 | 0.0522 (13) | 0.0498 (13) | 0.0393 (12) | −0.0007 (10) | 0.0053 (10) | 0.0013 (9) |
O3 | 0.0935 (15) | 0.0600 (12) | 0.0733 (14) | −0.0002 (10) | −0.0353 (11) | 0.0072 (10) |
C12 | 0.0537 (14) | 0.0548 (14) | 0.0418 (13) | −0.0087 (10) | −0.0004 (10) | −0.0006 (10) |
O6 | 0.1168 (18) | 0.0773 (13) | 0.0449 (11) | 0.0013 (11) | −0.0049 (11) | 0.0127 (9) |
C4 | 0.0481 (12) | 0.0509 (13) | 0.0408 (12) | −0.0020 (10) | −0.0044 (10) | −0.0060 (10) |
N3 | 0.0681 (14) | 0.0589 (14) | 0.0496 (13) | −0.0026 (10) | 0.0087 (11) | 0.0087 (10) |
O1 | 0.1140 (18) | 0.0723 (13) | 0.0715 (15) | −0.0338 (12) | −0.0082 (13) | −0.0195 (11) |
O5 | 0.130 (2) | 0.0646 (13) | 0.0845 (16) | −0.0310 (13) | −0.0140 (14) | 0.0210 (12) |
C9 | 0.0560 (14) | 0.0650 (15) | 0.0510 (15) | 0.0085 (12) | −0.0076 (12) | −0.0121 (12) |
O2 | 0.0872 (15) | 0.0940 (16) | 0.0878 (17) | −0.0358 (12) | 0.0189 (13) | 0.0113 (12) |
O4 | 0.1119 (18) | 0.0926 (16) | 0.0960 (18) | −0.0533 (14) | −0.0425 (14) | 0.0164 (13) |
C11 | 0.0568 (15) | 0.0773 (18) | 0.0582 (17) | 0.0004 (13) | −0.0189 (12) | −0.0063 (14) |
C10 | 0.0617 (16) | 0.0768 (18) | 0.0680 (19) | 0.0194 (14) | −0.0144 (14) | −0.0113 (15) |
Cl—C12 | 1.739 (2) | C8—C7 | 1.473 (3) |
O7—C1 | 1.373 (3) | C5—C4 | 1.377 (3) |
O7—C7 | 1.382 (3) | C5—C6 | 1.381 (3) |
O8—C7 | 1.198 (3) | C5—H5 | 0.9300 |
C13—C12 | 1.382 (3) | N1—O2 | 1.199 (3) |
C13—C8 | 1.393 (3) | N1—O1 | 1.215 (3) |
C13—H13 | 0.9300 | N1—C2 | 1.468 (3) |
C3—C2 | 1.372 (3) | C6—N3 | 1.478 (3) |
C3—C4 | 1.375 (3) | C12—C11 | 1.375 (3) |
C3—H3 | 0.9300 | O6—N3 | 1.214 (3) |
C1—C2 | 1.392 (3) | N3—O5 | 1.213 (3) |
C1—C6 | 1.392 (3) | C9—C10 | 1.379 (4) |
N2—O4 | 1.198 (3) | C9—H9 | 0.9300 |
N2—O3 | 1.215 (3) | C11—C10 | 1.380 (4) |
N2—C4 | 1.469 (3) | C11—H11 | 0.9300 |
C8—C9 | 1.386 (3) | C10—H10 | 0.9300 |
C1—O7—C7 | 116.14 (17) | C3—C2—C1 | 122.9 (2) |
C12—C13—C8 | 118.5 (2) | C3—C2—N1 | 117.73 (19) |
C12—C13—H13 | 120.7 | C1—C2—N1 | 119.42 (19) |
C8—C13—H13 | 120.7 | C5—C6—C1 | 121.7 (2) |
C2—C3—C4 | 117.7 (2) | C5—C6—N3 | 117.2 (2) |
C2—C3—H3 | 121.1 | C1—C6—N3 | 121.1 (2) |
C4—C3—H3 | 121.1 | C11—C12—C13 | 121.4 (2) |
O7—C1—C2 | 118.82 (19) | C11—C12—Cl | 119.78 (18) |
O7—C1—C6 | 123.9 (2) | C13—C12—Cl | 118.81 (19) |
C2—C1—C6 | 117.0 (2) | C3—C4—C5 | 122.3 (2) |
O4—N2—O3 | 123.9 (2) | C3—C4—N2 | 118.3 (2) |
O4—N2—C4 | 118.0 (2) | C5—C4—N2 | 119.4 (2) |
O3—N2—C4 | 118.1 (2) | O5—N3—O6 | 124.3 (2) |
C9—C8—C13 | 120.7 (2) | O5—N3—C6 | 116.7 (2) |
C9—C8—C7 | 122.8 (2) | O6—N3—C6 | 119.0 (2) |
C13—C8—C7 | 116.5 (2) | C10—C9—C8 | 119.2 (2) |
C4—C5—C6 | 118.4 (2) | C10—C9—H9 | 120.4 |
C4—C5—H5 | 120.8 | C8—C9—H9 | 120.4 |
C6—C5—H5 | 120.8 | C12—C11—C10 | 119.3 (2) |
O2—N1—O1 | 125.6 (2) | C12—C11—H11 | 120.4 |
O2—N1—C2 | 117.5 (2) | C10—C11—H11 | 120.4 |
O1—N1—C2 | 116.9 (2) | C9—C10—C11 | 120.9 (2) |
O8—C7—O7 | 121.1 (2) | C9—C10—H10 | 119.6 |
O8—C7—C8 | 126.9 (2) | C11—C10—H10 | 119.6 |
O7—C7—C8 | 111.96 (19) | ||
C7—O7—C1—C2 | −99.7 (2) | C2—C1—C6—C5 | 1.8 (3) |
C7—O7—C1—C6 | 86.9 (3) | O7—C1—C6—N3 | −3.1 (3) |
C12—C13—C8—C9 | 0.3 (3) | C2—C1—C6—N3 | −176.59 (19) |
C12—C13—C8—C7 | −177.8 (2) | C8—C13—C12—C11 | 1.2 (3) |
C1—O7—C7—O8 | 4.8 (3) | C8—C13—C12—Cl | −178.73 (16) |
C1—O7—C7—C8 | −175.72 (18) | C2—C3—C4—C5 | 3.1 (3) |
C9—C8—C7—O8 | −158.6 (3) | C2—C3—C4—N2 | −177.1 (2) |
C13—C8—C7—O8 | 19.5 (4) | C6—C5—C4—C3 | −1.4 (3) |
C9—C8—C7—O7 | 21.9 (3) | C6—C5—C4—N2 | 178.8 (2) |
C13—C8—C7—O7 | −159.95 (19) | O4—N2—C4—C3 | −175.8 (3) |
C4—C3—C2—C1 | −2.4 (3) | O3—N2—C4—C3 | 3.4 (3) |
C4—C3—C2—N1 | 177.2 (2) | O4—N2—C4—C5 | 4.0 (4) |
O7—C1—C2—C3 | −173.9 (2) | O3—N2—C4—C5 | −176.8 (2) |
C6—C1—C2—C3 | 0.0 (3) | C5—C6—N3—O5 | −20.4 (3) |
O7—C1—C2—N1 | 6.5 (3) | C1—C6—N3—O5 | 158.0 (2) |
C6—C1—C2—N1 | −179.6 (2) | C5—C6—N3—O6 | 159.5 (2) |
O2—N1—C2—C3 | 57.8 (3) | C1—C6—N3—O6 | −22.1 (3) |
O1—N1—C2—C3 | −120.5 (2) | C13—C8—C9—C10 | −1.8 (4) |
O2—N1—C2—C1 | −122.5 (3) | C7—C8—C9—C10 | 176.3 (2) |
O1—N1—C2—C1 | 59.2 (3) | C13—C12—C11—C10 | −1.3 (4) |
C4—C5—C6—C1 | −1.1 (3) | Cl—C12—C11—C10 | 178.6 (2) |
C4—C5—C6—N3 | 177.3 (2) | C8—C9—C10—C11 | 1.6 (4) |
O7—C1—C6—C5 | 175.3 (2) | C12—C11—C10—C9 | −0.1 (4) |
D—H···A | D—H | H···A | D···A | D—H···A |
C3—H3···O3i | 0.93 | 2.50 | 3.167 (3) | 128 |
C11—H11···O1ii | 0.93 | 2.46 | 3.263 (3) | 145 |
C13—H13···O4iii | 0.93 | 2.41 | 3.312 (3) | 165 |
C10—H10···O2iv | 0.93 | 2.60 | 3.278 (3) | 131 |
C5—H5···O8v | 0.93 | 2.48 | 3.404 (3) | 174 |
Symmetry codes: (i) −x+2, −y, −z+2; (ii) −x+1, −y, −z+1; (iii) −x+2, y−1/2, −z+3/2; (iv) −x+1, y+1/2, −z+3/2; (v) −x+2, y+1/2, −z+3/2. |
Experimental details
Crystal data | |
Chemical formula | C13H6ClN3O8 |
Mr | 367.66 |
Crystal system, space group | Monoclinic, P21/c |
Temperature (K) | 295 |
a, b, c (Å) | 11.0633 (4), 9.6560 (4), 14.0251 (6) |
β (°) | 94.009 (2) |
V (Å3) | 1494.60 (10) |
Z | 4 |
Radiation type | Mo Kα |
µ (mm−1) | 0.31 |
Crystal size (mm) | 0.24 × 0.24 × 0.17 |
Data collection | |
Diffractometer | Nonius KappaCCD diffractometer |
Absorption correction | – |
No. of measured, independent and observed [I > 2σ(I)] reflections | 16939, 3383, 2015 |
Rint | 0.069 |
(sin θ/λ)max (Å−1) | 0.650 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.051, 0.162, 1.00 |
No. of reflections | 3383 |
No. of parameters | 227 |
H-atom treatment | H-atom parameters constrained |
Δρmax, Δρmin (e Å−3) | 0.32, −0.27 |
Computer programs: COLLECT (Nonius, 2000), DENZO and SCALEPACK (Otwinowski & Minor, 1997), SHELXS97 (Sheldrick, 2008), SHELXL97 (Sheldrick, 2008), ORTEP-3 for Windows (Farrugia, 2012) and Mercury (Macrae et al., 2006), WinGX (Farrugia, 2012).
D—H···A | D—H | H···A | D···A | D—H···A |
C3—H3···O3i | 0.93 | 2.50 | 3.167 (3) | 128.4 |
C11—H11···O1ii | 0.93 | 2.46 | 3.263 (3) | 144.9 |
C13—H13···O4iii | 0.93 | 2.41 | 3.312 (3) | 164.8 |
C10—H10···O2iv | 0.93 | 2.60 | 3.278 (3) | 130.5 |
C5—H5···O8v | 0.93 | 2.48 | 3.404 (3) | 174.3 |
Symmetry codes: (i) −x+2, −y, −z+2; (ii) −x+1, −y, −z+1; (iii) −x+2, y−1/2, −z+3/2; (iv) −x+1, y+1/2, −z+3/2; (v) −x+2, y+1/2, −z+3/2. |
Acknowledgements
RMF is grateful to the Universidad del Valle, Colombia, for partial financial support.
References
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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.
The title compound, C13H6ClN3O8[2,4,6-trinitrophenyl 3-chlorobenzoate] (I), belongs to a group of molecules known as picryl substituted-benzoates (or 2,4,6-trinitrofenil substituted-benzoates). Our research group has been lately investigating about this type of compound, in order to complete the crystallographic information around picryl substituted-benzoates. Also, the structural information can be linked or be useful to explain the results found at investigations of reaction kinetics (Kirkien-Konasiewicz & Maccoll, 1964; Belousova et al., 2000), spectroscopic behavior and theoretical studies (Ibrahim et al., 2011) underwent over this same group of compounds. The molecular structure of (I) is shown in Fig. 1, with a numbering scheme similar to that for TNP4ClBA (Moreno-Fuquen et al., 2013), TNP3MeBA (Moreno-Fuquen et al., 2012a), TNP4MeBA(Moreno-Fuquen et al., 2012b) and TNPBA (Moreno-Fuquen et al., 2012c) in order to simplify structural comparisons. As a general fact, described deeply in previous papers (Moreno-Fuquen et al., 2012c and 2013), the structural parameters of substituted picryl benzoates, including (I), show significant differences in the bond distances C1—O7 and C7—O7 if they are compared with analogous distances in other phenyl benzoates reported in the literature (Allen, 2002, Version 5.33). The benzene rings of (I) form a dihedral angle of 73.59 (7)°. The central ester moiety forms an angle of 20.38 (12)° with the chloro-substituted benzene ring to which it is attached and an angle of 86.03 (7)° with the picryl ring. The nitro groups form dihedral angles with the adjacent benzene ring of 59.14 (9)°, 3.6 (2)° and 21.48 (14)° for O1—N1—O2, O3—N2—O4 and O5—N3—O6, respectively. The molecules are packed in a three dimensional network, through weak interactions C—H···O (see Table 1; Nardelli, 1995). Weak C3-H3···O3 and C11-H11···O1 contacts which reinforced each other, allow the molecules to propagate, forming one-dimensional helical chains, along [101]. Both weak contacts form dimers within the structure, as is shown in Fig. 2, and allow the formation of R22(10) and R22(22) rings respectively (Etter, 1990). In addition to the mentioned interactions other weak C-H···O interactions are observed. Indeed, the C13-H13···O4 and C10-H10···O2 weak contacts, form C(9) and C(12) chains of molecules allowing the crystal to grow also along [100] (see Fig. 3).