organic compounds
Methyl 2,2-bis(2,4-dinitrophenyl)ethanoate
aPG and Research Department of Chemistry, Seethalakshmi Ramaswami College, Tiruchirappalli 620 002, Tamil Nadu, India, bDepartment of Inorganic & Physical Chemistry, Indian Institute of Science, Bangalore 560 012, India, and cDepartment of Chemistry, Faculty of Engineering and Technology, SRM University, Kattankulathur 603 203, Tamil Nadu, India
*Correspondence e-mail: kalaivbalaj@yahoo.co.in
In the title compound, C15H10N4O10, the dihedral angle between the aromatic rings is 89.05 (16)°. One O atom of one of the nitro groups is disordered over two sites in a 0.70:0.30 ratio. In the crystal, the molecules are linked by weak C—H⋯O interactions.
Related literature
For related structures, see: Chudek et al. (1989); Ertas et al. (1998). For background to the uses of ethyl/methyl 2,2-bis(2,4-dinitrophenyl)ethanoates, see: Hu (2005); Kawai & Watanabe (2002); Liu et al. (2009). For further synthetic details, see: McIvor & Miller (1965).
Experimental
Crystal data
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Refinement
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Data collection: APEX2 (Bruker, 2006); cell SAINT (Bruker, 2006); data reduction: SAINT; program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: ORTEP-III (Burnett & Johnson, 1996); software used to prepare material for publication: SHELXL97.
Supporting information
https://doi.org/10.1107/S1600536811036440/hb6396sup1.cif
contains datablocks global, I. DOI:Structure factors: contains datablock I. DOI: https://doi.org/10.1107/S1600536811036440/hb6396Isup2.hkl
Supporting information file. DOI: https://doi.org/10.1107/S1600536811036440/hb6396Isup3.cml
1-Chloro-2,4-dinitrobenzene (2 g, 0.01 mol) in absolute ethanol was mixed with methyl 3-oxobutanoate (1.2 g, 0.01 mol) in absolute ethanol. Triethylamine (5 g, 0.05 mol) was then added and the mixture was shaken well for 5 to 6 h. On standing pale yellow crystals come out from the solution after 15 days. The crystals were filtered and washed well with distilled water and dried. The dried crystals were powdered and washed with copious amount of ether to remove the unreacted reactants and then with little absolute alcohol. The crystals obtained after washing were recrystallized either from ethylacetate or chloroform to yield colourless blocks of the title compound (yield 65–70%: m.pt. 428 K).
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 > 2σ(F2) is used only for calculating R-factors(gt) etc. and is
not relevant to the choice of reflections for
R-factors basedon F2 are statistically about twice as large as those based on F, and R-
factors based on ALL data will be even larger.
Ethyl / methyl 2,2-bis(2,4-dinitrophenyl)ethanoates have been used in many analytical detections (Kawai & Watanabe, 2002) and for the preparation of photo degradable aqueous inks (Hu, 2005) and tailor's chalk (Liu et al., 2009). Articles have also appeared on the structure of ethyl 2,2-bis(2,4-dinitrophenyl) ethanoate (Chudek et al., 1989, Ertas et al., 1998).
Ethyl 2,2-bis(2,4-dinitrophenyl)ethanoate has been synthesized (yield 32–71%) by mixing equimolar amounts of 1-chloro-2,4-dinitrobenzene and ethyl 2,4-dinitrophenylacetate in the presence of tripropylamine in dimethylformamide medium (McIvor and Miller, 1965). The same authors have also prepared methyl 2,2-bis(2,4-dinitrophenyl)ethanoate (title molecule) only in 32% yield by adopting the same procedure. In this article we report an efficient new one pot synthesis to prepare title molecule (scheme) in good yield (65–70%) with high purity. The acetyl group of methyl 3-oxobutanoate has cleaved off during the formation of the title molecule.
The ORTEP diagram of title molecule is presented in Figure 1. The packing of the molecules features a number of C—H···O hydrogen bonds (Table 1).
For related structures, see: Chudek et al. (1989); Ertas et al. (1998). For background to the uses of ethyl/methyl 2,2-bis(2,4-dinitrophenyl)ethanoates, see: Hu (2005); Kawai & Watanabe (2002); Liu et al. (2009). For further synthetic details, see: McIvor & Miller (1965).
Data collection: APEX2 (Bruker, 2006); cell
SAINT (Bruker, 2006); data reduction: SAINT (Bruker, 2006); program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: ORTEP-III (Burnett & Johnson, 1996); software used to prepare material for publication: SHELXL97 (Sheldrick, 2008).C15H10N4O10 | F(000) = 832 |
Mr = 406.27 | Dx = 1.565 Mg m−3 |
Monoclinic, P21/c | Mo Kα radiation, λ = 0.71073 Å |
a = 9.812 (5) Å | Cell parameters from 567 reflections |
b = 10.974 (6) Å | θ = 2.5–26.0° |
c = 16.025 (9) Å | µ = 0.14 mm−1 |
β = 91.589 (10)° | T = 293 K |
V = 1724.8 (16) Å3 | Block, colorless |
Z = 4 | 0.34 × 0.29 × 0.27 mm |
Bruker SMART APEX CCD diffractometer | 3525 independent reflections |
Radiation source: fine-focus sealed tube | 1981 reflections with I > 2σ(I) |
Graphite monochromator | Rint = 0.046 |
Detector resolution: 0.3 pixels mm-1 | θmax = 26.4°, θmin = 2.1° |
ω scans | h = −12→12 |
Absorption correction: multi-scan (SADABS; Bruker, 2006) | k = −13→13 |
Tmin = 0.955, Tmax = 0.965 | l = −20→20 |
13533 measured reflections |
Refinement on F2 | Primary atom site location: structure-invariant direct methods |
Least-squares matrix: full with fixed elements per cycle | Secondary atom site location: difference Fourier map |
R[F2 > 2σ(F2)] = 0.077 | Hydrogen site location: inferred from neighbouring sites |
wR(F2) = 0.293 | H-atom parameters constrained |
S = 0.98 | w = 1/[σ2(Fo2) + (0.2P)2] where P = (Fo2 + 2Fc2)/3 |
3525 reflections | (Δ/σ)max = 0.012 |
262 parameters | Δρmax = 0.86 e Å−3 |
0 restraints | Δρmin = −0.52 e Å−3 |
C15H10N4O10 | V = 1724.8 (16) Å3 |
Mr = 406.27 | Z = 4 |
Monoclinic, P21/c | Mo Kα radiation |
a = 9.812 (5) Å | µ = 0.14 mm−1 |
b = 10.974 (6) Å | T = 293 K |
c = 16.025 (9) Å | 0.34 × 0.29 × 0.27 mm |
β = 91.589 (10)° |
Bruker SMART APEX CCD diffractometer | 3525 independent reflections |
Absorption correction: multi-scan (SADABS; Bruker, 2006) | 1981 reflections with I > 2σ(I) |
Tmin = 0.955, Tmax = 0.965 | Rint = 0.046 |
13533 measured reflections |
R[F2 > 2σ(F2)] = 0.077 | 0 restraints |
wR(F2) = 0.293 | H-atom parameters constrained |
S = 0.98 | Δρmax = 0.86 e Å−3 |
3525 reflections | Δρmin = −0.52 e Å−3 |
262 parameters |
Geometry. All s.u.'s (except the s.u. in the dihedral angle between two l.s. planes) are estimated using the full covariance matrix. The cell s.u.'s are taken into account individually in the estimation of s.u.'s in distances, angles and torsion angles; correlations between s.u.'s in cell parameters are only used when they are defined by crystal symmetry. An approximate (isotropic) treatment of cell s.u.'s is used for estimating s.u.'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 > 2σ(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) | |
O1 | 0.5549 (3) | 0.1001 (4) | 0.33068 (19) | 0.1017 (12) | |
O2 | 0.5029 (2) | 0.1801 (3) | 0.20813 (16) | 0.0676 (8) | |
O3 | 0.5184 (7) | 0.3122 (6) | 0.4951 (5) | 0.136 (2)* | 0.7 |
O3A | 0.4078 (11) | 0.3806 (10) | 0.5064 (7) | 0.086 (3)* | 0.3 |
O4 | 0.4263 (4) | 0.3497 (3) | 0.38083 (18) | 0.0951 (10) | |
O5 | 0.2382 (4) | 0.1011 (2) | 0.69206 (16) | 0.0784 (9) | |
O6 | 0.1291 (3) | −0.0550 (3) | 0.64934 (17) | 0.0822 (9) | |
O7 | 0.0686 (2) | 0.2483 (2) | 0.30932 (14) | 0.0568 (6) | |
O8 | −0.0449 (3) | 0.2648 (3) | 0.19403 (17) | 0.0695 (8) | |
O9 | −0.0984 (4) | −0.1013 (3) | 0.03896 (17) | 0.0908 (10) | |
O10 | 0.0800 (5) | −0.2084 (3) | 0.0167 (2) | 0.1186 (14) | |
N1 | 0.4152 (5) | 0.3015 (4) | 0.4429 (2) | 0.1069 (15) | |
N2 | 0.1982 (3) | 0.0338 (3) | 0.63757 (17) | 0.0529 (7) | |
N3 | 0.0397 (3) | 0.2146 (2) | 0.23940 (17) | 0.0455 (7) | |
N4 | 0.0206 (4) | −0.1288 (3) | 0.05241 (18) | 0.0742 (11) | |
C1 | 0.4734 (4) | 0.1400 (4) | 0.2825 (2) | 0.0544 (9) | |
C2 | 0.3221 (3) | 0.1506 (3) | 0.29780 (19) | 0.0424 (8) | |
H2 | 0.2969 | 0.2361 | 0.2889 | 0.051* | |
C3 | 0.2927 (3) | 0.1203 (3) | 0.38819 (19) | 0.0420 (8) | |
C4 | 0.3366 (4) | 0.1903 (3) | 0.4556 (2) | 0.0557 (9) | |
C5 | 0.3089 (4) | 0.1621 (3) | 0.5366 (2) | 0.0565 (10) | |
H5 | 0.3412 | 0.2108 | 0.5804 | 0.068* | |
C6 | 0.2338 (3) | 0.0622 (3) | 0.55141 (19) | 0.0444 (8) | |
C7 | 0.1878 (4) | −0.0127 (3) | 0.4884 (2) | 0.0555 (9) | |
H7 | 0.1371 | −0.0819 | 0.4999 | 0.067* | |
C8 | 0.2183 (4) | 0.0169 (3) | 0.4073 (2) | 0.0548 (9) | |
H8 | 0.1881 | −0.0339 | 0.3642 | 0.066* | |
C9 | 0.2407 (3) | 0.0761 (3) | 0.23477 (18) | 0.0420 (7) | |
C10 | 0.1093 (3) | 0.1079 (3) | 0.20720 (18) | 0.0399 (7) | |
C11 | 0.0366 (4) | 0.0419 (3) | 0.14770 (19) | 0.0485 (8) | |
H11 | −0.0506 | 0.0654 | 0.1302 | 0.058* | |
C12 | 0.0968 (4) | −0.0586 (3) | 0.1154 (2) | 0.0547 (10) | |
C13 | 0.2250 (5) | −0.0943 (3) | 0.1401 (2) | 0.0610 (11) | |
H13 | 0.2645 | −0.1632 | 0.1171 | 0.073* | |
C14 | 0.2945 (4) | −0.0269 (3) | 0.1994 (2) | 0.0586 (10) | |
H14 | 0.3815 | −0.0517 | 0.2164 | 0.07* | |
C15 | 0.6420 (4) | 0.1669 (5) | 0.1825 (3) | 0.0790 (13) | |
H15A | 0.7002 | 0.2184 | 0.2163 | 0.119* | |
H15B | 0.6483 | 0.19 | 0.125 | 0.119* | |
H15C | 0.67 | 0.0836 | 0.1892 | 0.119* |
U11 | U22 | U33 | U12 | U13 | U23 | |
O1 | 0.0536 (16) | 0.175 (3) | 0.0770 (19) | 0.039 (2) | 0.0044 (14) | 0.038 (2) |
O2 | 0.0451 (13) | 0.099 (2) | 0.0595 (15) | −0.0030 (14) | 0.0116 (11) | 0.0197 (14) |
O4 | 0.130 (3) | 0.091 (2) | 0.0644 (17) | −0.057 (2) | 0.0008 (17) | 0.0107 (15) |
O5 | 0.114 (2) | 0.0730 (19) | 0.0486 (14) | 0.0012 (17) | 0.0103 (14) | −0.0108 (13) |
O6 | 0.0809 (19) | 0.104 (2) | 0.0625 (16) | −0.0308 (17) | 0.0112 (14) | 0.0161 (15) |
O7 | 0.0572 (14) | 0.0635 (15) | 0.0499 (12) | 0.0047 (12) | 0.0041 (11) | −0.0124 (11) |
O8 | 0.0556 (15) | 0.0680 (17) | 0.0838 (17) | 0.0205 (13) | −0.0170 (13) | −0.0031 (14) |
O9 | 0.142 (3) | 0.0722 (19) | 0.0568 (15) | −0.0440 (19) | −0.0298 (16) | 0.0104 (13) |
O10 | 0.233 (4) | 0.0577 (18) | 0.0638 (18) | 0.013 (2) | −0.018 (2) | −0.0165 (15) |
N1 | 0.144 (3) | 0.124 (3) | 0.0516 (19) | −0.089 (3) | −0.020 (2) | 0.010 (2) |
N2 | 0.0522 (17) | 0.0567 (18) | 0.0501 (15) | 0.0065 (14) | 0.0086 (13) | 0.0082 (13) |
N3 | 0.0356 (13) | 0.0472 (16) | 0.0535 (15) | −0.0013 (12) | 0.0002 (11) | −0.0005 (12) |
N4 | 0.136 (3) | 0.0434 (17) | 0.0423 (16) | −0.0151 (19) | −0.0114 (17) | 0.0084 (13) |
C1 | 0.0470 (19) | 0.065 (2) | 0.0512 (19) | 0.0017 (18) | −0.0009 (16) | 0.0027 (17) |
C2 | 0.0379 (16) | 0.0461 (18) | 0.0433 (16) | −0.0005 (14) | 0.0026 (13) | 0.0064 (14) |
C3 | 0.0373 (16) | 0.0432 (18) | 0.0455 (16) | 0.0003 (14) | 0.0018 (13) | 0.0016 (14) |
C4 | 0.060 (2) | 0.058 (2) | 0.0494 (18) | −0.0170 (18) | −0.0038 (16) | 0.0050 (16) |
C5 | 0.064 (2) | 0.062 (2) | 0.0436 (18) | −0.0139 (19) | −0.0057 (16) | −0.0023 (16) |
C6 | 0.0417 (17) | 0.0492 (19) | 0.0425 (16) | 0.0015 (15) | 0.0021 (13) | 0.0025 (14) |
C7 | 0.070 (2) | 0.0450 (19) | 0.0515 (19) | −0.0121 (18) | 0.0027 (17) | 0.0065 (16) |
C8 | 0.072 (2) | 0.046 (2) | 0.0463 (18) | −0.0109 (18) | 0.0038 (16) | 0.0014 (15) |
C9 | 0.0449 (17) | 0.0445 (18) | 0.0370 (15) | −0.0010 (15) | 0.0097 (13) | 0.0024 (13) |
C10 | 0.0456 (17) | 0.0385 (17) | 0.0360 (15) | −0.0007 (14) | 0.0049 (13) | 0.0029 (12) |
C11 | 0.059 (2) | 0.0480 (19) | 0.0385 (16) | −0.0071 (17) | −0.0011 (14) | 0.0073 (14) |
C12 | 0.084 (3) | 0.0434 (19) | 0.0364 (16) | −0.0099 (19) | 0.0033 (16) | 0.0040 (14) |
C13 | 0.090 (3) | 0.042 (2) | 0.052 (2) | 0.008 (2) | 0.018 (2) | −0.0016 (16) |
C14 | 0.063 (2) | 0.053 (2) | 0.060 (2) | 0.0132 (19) | 0.0123 (18) | −0.0016 (18) |
C15 | 0.052 (2) | 0.111 (4) | 0.075 (3) | −0.007 (2) | 0.016 (2) | −0.001 (3) |
O1—C1 | 1.180 (4) | C3—C4 | 1.385 (5) |
O2—C1 | 1.311 (4) | C3—C8 | 1.387 (5) |
O2—C15 | 1.443 (5) | C4—C5 | 1.369 (5) |
O3—N1 | 1.302 (7) | C5—C6 | 1.346 (5) |
O3—O3A | 1.336 (12) | C5—H5 | 0.9300 |
O3A—N1 | 1.341 (11) | C6—C7 | 1.369 (5) |
O4—N1 | 1.134 (4) | C7—C8 | 1.380 (5) |
O5—N2 | 1.201 (3) | C7—H7 | 0.9300 |
O6—N2 | 1.206 (3) | C8—H8 | 0.9300 |
O7—N3 | 1.206 (3) | C9—C14 | 1.376 (5) |
O8—N3 | 1.220 (3) | C9—C10 | 1.396 (5) |
O9—N4 | 1.219 (4) | C10—C11 | 1.380 (4) |
O10—N4 | 1.204 (4) | C11—C12 | 1.360 (5) |
N1—C4 | 1.460 (5) | C11—H11 | 0.9300 |
N2—C6 | 1.467 (4) | C12—C13 | 1.365 (6) |
N3—C10 | 1.457 (4) | C13—C14 | 1.371 (5) |
N4—C12 | 1.459 (5) | C13—H13 | 0.9300 |
C1—C2 | 1.516 (5) | C14—H14 | 0.9300 |
C2—C9 | 1.510 (4) | C15—H15A | 0.9600 |
C2—C3 | 1.522 (4) | C15—H15B | 0.9600 |
C2—H2 | 0.9800 | C15—H15C | 0.9600 |
C1—O2—C15 | 117.4 (3) | C4—C5—H5 | 120.8 |
N1—O3—O3A | 61.1 (6) | C5—C6—C7 | 122.0 (3) |
O3—O3A—N1 | 58.2 (6) | C5—C6—N2 | 119.0 (3) |
O4—N1—O3 | 115.4 (5) | C7—C6—N2 | 119.0 (3) |
O4—N1—O3A | 111.8 (6) | C6—C7—C8 | 118.5 (3) |
O3—N1—O3A | 60.7 (6) | C6—C7—H7 | 120.7 |
O4—N1—C4 | 125.2 (3) | C8—C7—H7 | 120.7 |
O3—N1—C4 | 113.0 (5) | C7—C8—C3 | 121.9 (3) |
O3A—N1—C4 | 113.3 (6) | C7—C8—H8 | 119.0 |
O5—N2—O6 | 123.9 (2) | C3—C8—H8 | 119.0 |
O5—N2—C6 | 118.2 (3) | C14—C9—C10 | 115.9 (3) |
O6—N2—C6 | 117.9 (3) | C14—C9—C2 | 121.2 (3) |
O7—N3—O8 | 123.7 (2) | C10—C9—C2 | 122.9 (3) |
O7—N3—C10 | 118.4 (2) | C11—C10—C9 | 122.9 (3) |
O8—N3—C10 | 118.0 (2) | C11—C10—N3 | 115.4 (3) |
O10—N4—O9 | 124.7 (3) | C9—C10—N3 | 121.8 (3) |
O10—N4—C12 | 117.8 (3) | C12—C11—C10 | 117.8 (3) |
O9—N4—C12 | 117.5 (3) | C12—C11—H11 | 121.1 |
O1—C1—O2 | 123.8 (3) | C10—C11—H11 | 121.1 |
O1—C1—C2 | 124.9 (3) | C11—C12—C13 | 121.9 (3) |
O2—C1—C2 | 111.3 (3) | C11—C12—N4 | 118.1 (4) |
C9—C2—C1 | 110.6 (3) | C13—C12—N4 | 120.0 (3) |
C9—C2—C3 | 114.1 (3) | C12—C13—C14 | 118.8 (3) |
C1—C2—C3 | 110.5 (3) | C12—C13—H13 | 120.6 |
C9—C2—H2 | 107.1 | C14—C13—H13 | 120.6 |
C1—C2—H2 | 107.1 | C13—C14—C9 | 122.7 (4) |
C3—C2—H2 | 107.1 | C13—C14—H14 | 118.7 |
C4—C3—C8 | 115.8 (3) | C9—C14—H14 | 118.7 |
C4—C3—C2 | 124.0 (3) | O2—C15—H15A | 109.5 |
C8—C3—C2 | 120.2 (3) | O2—C15—H15B | 109.5 |
C5—C4—C3 | 123.3 (3) | H15A—C15—H15B | 109.5 |
C5—C4—N1 | 116.2 (3) | O2—C15—H15C | 109.5 |
C3—C4—N1 | 120.5 (3) | H15A—C15—H15C | 109.5 |
C6—C5—C4 | 118.4 (3) | H15B—C15—H15C | 109.5 |
C6—C5—H5 | 120.8 | ||
O3A—O3—N1—O4 | 101.8 (7) | O6—N2—C6—C7 | −0.1 (4) |
O3A—O3—N1—C4 | −104.7 (7) | C5—C6—C7—C8 | −0.9 (6) |
O3—O3A—N1—O4 | −107.8 (6) | N2—C6—C7—C8 | 178.0 (3) |
O3—O3A—N1—C4 | 104.2 (6) | C6—C7—C8—C3 | −0.6 (6) |
C15—O2—C1—O1 | 4.1 (6) | C4—C3—C8—C7 | 1.3 (5) |
C15—O2—C1—C2 | −175.4 (3) | C2—C3—C8—C7 | −179.0 (3) |
O1—C1—C2—C9 | −118.9 (4) | C1—C2—C9—C14 | 28.9 (4) |
O2—C1—C2—C9 | 60.5 (4) | C3—C2—C9—C14 | −96.4 (4) |
O1—C1—C2—C3 | 8.4 (6) | C1—C2—C9—C10 | −149.5 (3) |
O2—C1—C2—C3 | −172.2 (3) | C3—C2—C9—C10 | 85.2 (4) |
C9—C2—C3—C4 | −168.3 (3) | C14—C9—C10—C11 | −0.5 (5) |
C1—C2—C3—C4 | 66.4 (4) | C2—C9—C10—C11 | 177.9 (3) |
C9—C2—C3—C8 | 12.1 (4) | C14—C9—C10—N3 | 179.9 (3) |
C1—C2—C3—C8 | −113.3 (4) | C2—C9—C10—N3 | −1.6 (5) |
C8—C3—C4—C5 | −0.5 (6) | O7—N3—C10—C11 | 152.1 (3) |
C2—C3—C4—C5 | 179.8 (3) | O8—N3—C10—C11 | −27.7 (4) |
C8—C3—C4—N1 | −179.7 (4) | O7—N3—C10—C9 | −28.3 (4) |
C2—C3—C4—N1 | 0.6 (6) | O8—N3—C10—C9 | 151.9 (3) |
O4—N1—C4—C5 | −165.2 (5) | C9—C10—C11—C12 | 0.4 (5) |
O3—N1—C4—C5 | 44.4 (6) | N3—C10—C11—C12 | 179.9 (3) |
O3A—N1—C4—C5 | −22.2 (7) | C10—C11—C12—C13 | −0.2 (5) |
O4—N1—C4—C3 | 14.1 (7) | C10—C11—C12—N4 | −179.9 (3) |
O3—N1—C4—C3 | −136.3 (5) | O10—N4—C12—C11 | 171.1 (3) |
O3A—N1—C4—C3 | 157.0 (6) | O9—N4—C12—C11 | −8.0 (4) |
C3—C4—C5—C6 | −0.9 (6) | O10—N4—C12—C13 | −8.7 (5) |
N1—C4—C5—C6 | 178.4 (4) | O9—N4—C12—C13 | 172.2 (3) |
C4—C5—C6—C7 | 1.6 (6) | C11—C12—C13—C14 | 0.2 (6) |
C4—C5—C6—N2 | −177.3 (3) | N4—C12—C13—C14 | 180.0 (3) |
O5—N2—C6—C5 | −0.3 (4) | C12—C13—C14—C9 | −0.5 (6) |
O6—N2—C6—C5 | 178.8 (3) | C10—C9—C14—C13 | 0.6 (5) |
O5—N2—C6—C7 | −179.2 (3) | C2—C9—C14—C13 | −177.9 (3) |
D—H···A | D—H | H···A | D···A | D—H···A |
C2—H2···O5i | 0.98 | 2.43 | 3.301 (5) | 149 |
C7—H7···O10ii | 0.93 | 2.38 | 3.273 (5) | 160 |
C15—H15A···O8iii | 0.96 | 2.59 | 3.255 (5) | 127 |
C15—H15B···O3i | 0.96 | 2.41 | 3.216 (9) | 141 |
Symmetry codes: (i) x, −y+1/2, z−1/2; (ii) x, −y−1/2, z+1/2; (iii) x+1, y, z. |
Experimental details
Crystal data | |
Chemical formula | C15H10N4O10 |
Mr | 406.27 |
Crystal system, space group | Monoclinic, P21/c |
Temperature (K) | 293 |
a, b, c (Å) | 9.812 (5), 10.974 (6), 16.025 (9) |
β (°) | 91.589 (10) |
V (Å3) | 1724.8 (16) |
Z | 4 |
Radiation type | Mo Kα |
µ (mm−1) | 0.14 |
Crystal size (mm) | 0.34 × 0.29 × 0.27 |
Data collection | |
Diffractometer | Bruker SMART APEX CCD |
Absorption correction | Multi-scan (SADABS; Bruker, 2006) |
Tmin, Tmax | 0.955, 0.965 |
No. of measured, independent and observed [I > 2σ(I)] reflections | 13533, 3525, 1981 |
Rint | 0.046 |
(sin θ/λ)max (Å−1) | 0.625 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.077, 0.293, 0.98 |
No. of reflections | 3525 |
No. of parameters | 262 |
H-atom treatment | H-atom parameters constrained |
Δρmax, Δρmin (e Å−3) | 0.86, −0.52 |
Computer programs: APEX2 (Bruker, 2006), SAINT (Bruker, 2006), SHELXS97 (Sheldrick, 2008), SHELXL97 (Sheldrick, 2008), ORTEP-III (Burnett & Johnson, 1996).
D—H···A | D—H | H···A | D···A | D—H···A |
C2—H2···O5i | 0.98 | 2.43 | 3.301 (5) | 149 |
C7—H7···O10ii | 0.93 | 2.38 | 3.273 (5) | 160 |
C15—H15A···O8iii | 0.96 | 2.59 | 3.255 (5) | 127 |
C15—H15B···O3i | 0.96 | 2.41 | 3.216 (9) | 141 |
Symmetry codes: (i) x, −y+1/2, z−1/2; (ii) x, −y−1/2, z+1/2; (iii) x+1, y, z. |
Acknowledgements
The authors thank Dr Netaji of the IISc Bangalore for the data collection.
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.
Ethyl / methyl 2,2-bis(2,4-dinitrophenyl)ethanoates have been used in many analytical detections (Kawai & Watanabe, 2002) and for the preparation of photo degradable aqueous inks (Hu, 2005) and tailor's chalk (Liu et al., 2009). Articles have also appeared on the structure of ethyl 2,2-bis(2,4-dinitrophenyl) ethanoate (Chudek et al., 1989, Ertas et al., 1998).
Ethyl 2,2-bis(2,4-dinitrophenyl)ethanoate has been synthesized (yield 32–71%) by mixing equimolar amounts of 1-chloro-2,4-dinitrobenzene and ethyl 2,4-dinitrophenylacetate in the presence of tripropylamine in dimethylformamide medium (McIvor and Miller, 1965). The same authors have also prepared methyl 2,2-bis(2,4-dinitrophenyl)ethanoate (title molecule) only in 32% yield by adopting the same procedure. In this article we report an efficient new one pot synthesis to prepare title molecule (scheme) in good yield (65–70%) with high purity. The acetyl group of methyl 3-oxobutanoate has cleaved off during the formation of the title molecule.
The ORTEP diagram of title molecule is presented in Figure 1. The packing of the molecules features a number of C—H···O hydrogen bonds (Table 1).