Literature DB >> 21522790

2,3-Dibromo-1-(4-methyl-phen-yl)-3-(5-nitro-furan-2-yl)propan-1-one.

Hoong-Kun Fun, Tara Shahani, Balakrishna Kalluraya.   

Abstract

In the title compound, C(14)H(11)Br(2)NO(4), the whole mol-ecule is disordered over two positions with a refined occupancy ratio of 0.539 (9):0.461 (9). The 2-nitro-furan and toluene groups are approximately planar, with maximum deviations of 0.176 (11) and 0.121 (14) Å, respectively, in the major component and 0.208 (11) and 0.30 (17) Å in the minor component. The dihedral angles between the 2-nitro-furan and toluene groups are 8.7 (5) and 8.0 (9)° for the major and minor components, respectively. In the crystal, weak inter-molecular C-H⋯O inter-actions connect mol-ecules into a three-dimensional network, generating R(2) (1)(6) ring motifs.

Entities:  

Year:  2010        PMID: 21522790      PMCID: PMC3050337          DOI: 10.1107/S1600536810050488

Source DB:  PubMed          Journal:  Acta Crystallogr Sect E Struct Rep Online        ISSN: 1600-5368


Related literature

For the biological activity of nitrofurans, see: Holla et al. (1986 ▶, 1987 ▶, 1992 ▶); Hegde et al. (2006 ▶); Rai et al. (2008 ▶). For a related structure, see: Fun et al. (2010 ▶). For the stability of the temperature controller used in the data collection, see: Cosier & Glazer (1986 ▶). For standard bond-length data, see: Allen et al. (1987 ▶). For hydrogen-bond motifs, see: Bernstein et al. (1995 ▶).

Experimental

Crystal data

C14H11Br2NO4 M = 417.06 Triclinic, a = 8.7766 (3) Å b = 9.0386 (3) Å c = 10.4841 (3) Å α = 87.601 (2)° β = 75.505 (2)° γ = 69.554 (2)° V = 753.53 (4) Å3 Z = 2 Mo Kα radiation μ = 5.39 mm−1 T = 100 K 0.47 × 0.21 × 0.13 mm

Data collection

Bruker APEXII DUO CCD area-detector diffractometer Absorption correction: multi-scan (SADABS; Bruker, 2009 ▶) T min = 0.184, T max = 0.550 10357 measured reflections 3465 independent reflections 2729 reflections with I > 2σ(I) R int = 0.026

Refinement

R[F 2 > 2σ(F 2)] = 0.041 wR(F 2) = 0.103 S = 1.19 3465 reflections 274 parameters 658 restraints H-atom parameters constrained Δρmax = 0.88 e Å−3 Δρmin = −0.40 e Å−3 Data collection: APEX2 (Bruker, 2009 ▶); cell refinement: SAINT (Bruker, 2009 ▶); data reduction: SAINT; 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 and PLATON (Spek, 2009 ▶). Crystal structure: contains datablocks global, I. DOI: 10.1107/S1600536810050488/lh5178sup1.cif Structure factors: contains datablocks I. DOI: 10.1107/S1600536810050488/lh5178Isup2.hkl Additional supplementary materials: crystallographic information; 3D view; checkCIF report
C14H11Br2NO4Z = 2
Mr = 417.06F(000) = 408
Triclinic, P1Dx = 1.838 Mg m3
Hall symbol: -P 1Mo Kα radiation, λ = 0.71073 Å
a = 8.7766 (3) ÅCell parameters from 4461 reflections
b = 9.0386 (3) Åθ = 2.8–29.8°
c = 10.4841 (3) ŵ = 5.39 mm1
α = 87.601 (2)°T = 100 K
β = 75.505 (2)°Block, colourless
γ = 69.554 (2)°0.47 × 0.21 × 0.13 mm
V = 753.53 (4) Å3
Bruker APEXII DUO CCD area-detector diffractometer3465 independent reflections
Radiation source: fine-focus sealed tube2729 reflections with I > 2σ(I)
graphiteRint = 0.026
φ and ω scansθmax = 27.5°, θmin = 2.0°
Absorption correction: multi-scan (SADABS; Bruker, 2009)h = −11→11
Tmin = 0.184, Tmax = 0.550k = −11→11
10357 measured reflectionsl = −13→13
Refinement on F2Primary atom site location: structure-invariant direct methods
Least-squares matrix: fullSecondary atom site location: difference Fourier map
R[F2 > 2σ(F2)] = 0.041Hydrogen site location: inferred from neighbouring sites
wR(F2) = 0.103H-atom parameters constrained
S = 1.19w = 1/[σ2(Fo2) + (0.0366P)2 + 1.118P] where P = (Fo2 + 2Fc2)/3
3465 reflections(Δ/σ)max < 0.001
274 parametersΔρmax = 0.88 e Å3
658 restraintsΔρmin = −0.40 e Å3
Experimental. The crystal was placed in the cold stream of an Oxford Cyrosystems Cobra open-flow nitrogen cryostat (Cosier & Glazer, 1986) operating at 100.0 (1) K.
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.
xyzUiso*/UeqOcc. (<1)
O1A0.3252 (8)0.1907 (8)0.2855 (6)0.0247 (12)0.539 (9)
O2A0.7200 (11)0.4559 (10)0.3552 (8)0.0263 (15)0.539 (9)
O3A0.0607 (10)−0.0275 (11)0.3127 (8)0.0353 (18)0.539 (9)
O4A0.2823 (12)−0.0290 (13)0.1606 (10)0.029 (2)0.539 (9)
N1A0.188 (3)0.009 (3)0.2706 (15)0.025 (3)0.539 (9)
C1A0.1954 (16)0.1367 (19)0.3437 (13)0.024 (2)0.539 (9)
C2A0.0942 (13)0.2160 (16)0.4548 (12)0.024 (2)0.539 (9)
H2AA−0.00590.20620.50330.029*0.539 (9)
C3A0.1735 (15)0.3187 (18)0.4824 (14)0.026 (3)0.539 (9)
H3AA0.14090.38410.55790.031*0.539 (9)
C5A0.3058 (10)0.3035 (9)0.3781 (8)0.0256 (15)0.539 (9)
C8A0.7314 (16)0.3690 (17)0.2649 (12)0.028 (2)0.539 (9)
C9A0.8760 (16)0.322 (2)0.1492 (12)0.024 (3)0.539 (9)
C10A1.009 (2)0.374 (4)0.148 (2)0.023 (3)0.539 (9)
H10A1.00270.43680.21930.028*0.539 (9)
C11A1.1495 (18)0.334 (2)0.0434 (16)0.027 (2)0.539 (9)
H11A1.23500.37200.04490.032*0.539 (9)
C12A1.1681 (14)0.2394 (19)−0.0645 (13)0.027 (2)0.539 (9)
C13A1.0316 (14)0.1904 (19)−0.0648 (12)0.028 (3)0.539 (9)
H13A1.03790.1293−0.13640.033*0.539 (9)
C14A0.8896 (14)0.2312 (18)0.0384 (11)0.031 (3)0.539 (9)
H14A0.80150.19820.03480.037*0.539 (9)
C15A1.3292 (18)0.177 (2)−0.1713 (17)0.049 (4)0.539 (9)
H15A1.40310.2314−0.16290.073*0.539 (9)
H15B1.30480.1948−0.25610.073*0.539 (9)
H15C1.38230.0660−0.16290.073*0.539 (9)
Br1A0.6688 (5)0.1302 (5)0.4219 (5)0.0395 (7)0.539 (9)
Br2A0.3626 (5)0.5504 (4)0.2175 (5)0.0414 (6)0.539 (9)
C6A0.4234 (8)0.3896 (8)0.3487 (7)0.0309 (16)0.539 (9)
H6AA0.41890.44240.43010.037*0.539 (9)
C7A0.5995 (9)0.2863 (9)0.2889 (7)0.0312 (15)0.539 (9)
H7AA0.60660.23220.20740.037*0.539 (9)
O1B0.3468 (10)0.1563 (9)0.3082 (8)0.024 (2)*0.461 (9)
O2B0.6979 (14)0.4869 (11)0.3410 (10)0.022 (2)*0.461 (9)
O3B0.1011 (13)−0.0594 (12)0.2947 (11)0.037 (3)*0.461 (9)
O4B0.3032 (19)−0.0313 (19)0.1354 (13)0.037 (3)*0.461 (9)
N1B0.197 (4)0.012 (4)0.241 (2)0.025 (3)0.461 (9)
C1B0.206 (2)0.122 (2)0.3321 (16)0.025 (3)*0.461 (9)
C2B0.1002 (19)0.194 (2)0.4467 (16)0.030 (3)*0.461 (9)
H2BA0.00110.17900.49100.036*0.461 (9)
C3B0.171 (2)0.298 (2)0.4858 (17)0.031 (4)*0.461 (9)
H3BA0.12080.37340.55520.037*0.461 (9)
C5B0.3271 (12)0.2658 (10)0.4029 (9)0.021 (2)*0.461 (9)
C8B0.713 (2)0.393 (2)0.2559 (14)0.025 (3)*0.461 (9)
C9B0.860 (2)0.340 (3)0.1418 (16)0.025 (4)*0.461 (9)
C10B1.003 (3)0.374 (5)0.145 (3)0.030 (5)*0.461 (9)
H10B1.00020.43440.21560.036*0.461 (9)
C11B1.149 (2)0.320 (3)0.0433 (19)0.029 (3)*0.461 (9)
H11B1.24440.33930.04800.035*0.461 (9)
C12B1.1500 (17)0.235 (2)−0.0665 (15)0.026 (3)*0.461 (9)
C13B1.0072 (18)0.203 (2)−0.0705 (16)0.029 (4)*0.461 (9)
H13B1.00710.1493−0.14400.035*0.461 (9)
C14B0.8655 (18)0.252 (2)0.0331 (14)0.028 (3)*0.461 (9)
H14B0.77280.22540.03080.033*0.461 (9)
C15B1.306 (2)0.188 (2)−0.1803 (17)0.028 (3)*0.461 (9)
H15D1.40290.1346−0.14770.043*0.461 (9)
H15E1.31720.2816−0.22250.043*0.461 (9)
H15F1.29620.1196−0.24280.043*0.461 (9)
Br1B0.6416 (5)0.1406 (5)0.4607 (4)0.0297 (5)0.461 (9)
Br2B0.4087 (6)0.5267 (6)0.1895 (6)0.0438 (8)0.461 (9)
C6B0.4744 (8)0.3165 (8)0.3932 (6)0.0174 (16)*0.461 (9)
H6BA0.43870.41170.45050.021*0.461 (9)
C7B0.5614 (9)0.3472 (9)0.2554 (7)0.0208 (17)*0.461 (9)
H7BA0.59630.25350.19650.025*0.461 (9)
U11U22U33U12U13U23
O1A0.025 (3)0.024 (3)0.035 (3)−0.015 (2)−0.015 (2)0.000 (2)
O2A0.030 (4)0.024 (3)0.033 (3)−0.015 (3)−0.014 (3)0.002 (3)
O3A0.028 (4)0.044 (4)0.044 (4)−0.029 (4)0.000 (3)−0.015 (3)
O4A0.025 (4)0.040 (4)0.024 (5)−0.018 (3)0.000 (3)−0.017 (3)
N1A0.035 (3)0.0307 (16)0.021 (7)−0.0187 (17)−0.020 (4)0.008 (5)
C1A0.021 (3)0.025 (4)0.038 (4)−0.015 (3)−0.017 (2)−0.001 (2)
C2A0.021 (3)0.025 (4)0.038 (4)−0.015 (3)−0.017 (2)−0.001 (2)
C3A0.024 (4)0.021 (5)0.041 (4)−0.016 (3)−0.013 (3)−0.004 (3)
C5A0.030 (3)0.022 (3)0.033 (4)−0.014 (3)−0.014 (3)0.003 (3)
C8A0.024 (4)0.028 (5)0.043 (4)−0.016 (4)−0.016 (3)0.000 (4)
C9A0.025 (4)0.025 (5)0.029 (4)−0.014 (4)−0.014 (3)0.001 (3)
C10A0.030 (4)0.027 (4)0.026 (4)−0.018 (3)−0.018 (3)0.004 (2)
C11A0.025 (3)0.026 (3)0.037 (3)−0.013 (2)−0.015 (2)0.005 (2)
C12A0.025 (3)0.026 (3)0.037 (3)−0.013 (2)−0.015 (2)0.005 (2)
C13A0.027 (4)0.030 (5)0.030 (4)−0.008 (4)−0.016 (3)−0.009 (3)
C14A0.025 (4)0.037 (6)0.044 (4)−0.017 (4)−0.021 (3)−0.005 (4)
C15A0.033 (6)0.059 (7)0.044 (6)−0.010 (5)0.001 (5)−0.020 (5)
Br1A0.0302 (12)0.0365 (8)0.0632 (18)−0.0172 (8)−0.0264 (13)0.0195 (12)
Br2A0.0509 (16)0.0327 (8)0.0597 (17)−0.0246 (10)−0.0357 (13)0.0189 (8)
C6A0.033 (3)0.031 (3)0.037 (4)−0.017 (3)−0.017 (3)0.002 (3)
C7A0.031 (3)0.030 (3)0.039 (4)−0.017 (3)−0.012 (3)0.001 (3)
N1B0.035 (3)0.0307 (16)0.021 (7)−0.0187 (17)−0.020 (4)0.008 (5)
Br1B0.0228 (10)0.0363 (6)0.0371 (12)−0.0145 (7)−0.0151 (9)0.0096 (9)
Br2B0.0455 (16)0.0513 (16)0.0555 (18)−0.0310 (13)−0.0328 (14)0.0264 (12)
O1A—C5A1.375 (7)O1B—C1B1.343 (10)
O1A—C1A1.387 (8)O1B—C5B1.368 (9)
O2A—C8A1.218 (8)O2B—C8B1.207 (11)
O3A—N1A1.243 (10)O3B—N1B1.251 (12)
O4A—N1A1.222 (9)O4B—N1B1.228 (11)
N1A—C1A1.439 (9)N1B—C1B1.436 (11)
C1A—C2A1.329 (9)C1B—C2B1.347 (10)
C2A—C3A1.416 (9)C2B—C3B1.413 (11)
C2A—H2AA0.9300C2B—H2BA0.9300
C3A—C5A1.352 (9)C3B—C5B1.364 (11)
C3A—H3AA0.9300C3B—H3BA0.9300
C5A—C6A1.465 (9)C5B—C6B1.496 (11)
C8A—C9A1.469 (9)C8B—C9B1.472 (10)
C8A—C7A1.550 (13)C8B—C7B1.527 (18)
C9A—C10A1.405 (9)C9B—C10B1.399 (11)
C9A—C14A1.406 (8)C9B—C14B1.401 (11)
C10A—C11A1.380 (9)C10B—C11B1.391 (11)
C10A—H10A0.9300C10B—H10B0.9300
C11A—C12A1.390 (9)C11B—C12B1.406 (10)
C11A—H11A0.9300C11B—H11B0.9300
C12A—C13A1.416 (10)C12B—C13B1.388 (11)
C12A—C15A1.508 (9)C12B—C15B1.515 (10)
C13A—C14A1.377 (9)C13B—C14B1.379 (11)
C13A—H13A0.9300C13B—H13B0.9300
C14A—H14A0.9300C14B—H14B0.9300
C15A—H15A0.9600C15B—H15D0.9600
C15A—H15B0.9600C15B—H15E0.9600
C15A—H15C0.9600C15B—H15F0.9600
Br1A—C7A1.992 (10)Br1B—C6B1.994 (8)
Br2A—C6A1.987 (8)Br2B—C7B1.938 (10)
C6A—C7A1.486 (10)C6B—C7B1.520 (10)
C6A—H6AA0.9800C6B—H6BA0.9800
C7A—H7AA0.9800C7B—H7BA0.9800
C5A—O1A—C1A101.7 (6)O3B—N1B—C1B111.7 (12)
O4A—N1A—O3A124.4 (10)O1B—C1B—C2B110.1 (8)
O4A—N1A—C1A118.0 (9)O1B—C1B—N1B117.5 (10)
O3A—N1A—C1A115.5 (10)C2B—C1B—N1B132.3 (10)
C2A—C1A—O1A114.5 (7)C1B—C2B—C3B105.8 (9)
C2A—C1A—N1A130.6 (8)C1B—C2B—H2BA127.1
O1A—C1A—N1A114.8 (8)C3B—C2B—H2BA127.1
C1A—C2A—C3A104.2 (7)C5B—C3B—C2B107.5 (10)
C1A—C2A—H2AA127.9C5B—C3B—H3BA126.3
C3A—C2A—H2AA127.9C2B—C3B—H3BA126.3
C5A—C3A—C2A106.9 (7)C3B—C5B—O1B107.6 (8)
C5A—C3A—H3AA126.5C3B—C5B—C6B136.7 (9)
C2A—C3A—H3AA126.5O1B—C5B—C6B115.8 (7)
C3A—C5A—O1A112.1 (6)O2B—C8B—C9B123.2 (13)
C3A—C5A—C6A130.6 (7)O2B—C8B—C7B118.0 (12)
O1A—C5A—C6A117.3 (6)C9B—C8B—C7B118.1 (10)
O2A—C8A—C9A122.9 (9)C10B—C9B—C14B118.6 (10)
O2A—C8A—C7A115.9 (9)C10B—C9B—C8B118.5 (11)
C9A—C8A—C7A120.4 (8)C14B—C9B—C8B122.9 (11)
C10A—C9A—C14A117.7 (8)C11B—C10B—C9B121.1 (12)
C10A—C9A—C8A117.3 (8)C11B—C10B—H10B119.5
C14A—C9A—C8A125.0 (9)C9B—C10B—H10B119.5
C11A—C10A—C9A120.5 (9)C10B—C11B—C12B119.3 (12)
C11A—C10A—H10A119.7C10B—C11B—H11B120.3
C9A—C10A—H10A119.7C12B—C11B—H11B120.3
C10A—C11A—C12A122.6 (9)C13B—C12B—C11B119.5 (10)
C10A—C11A—H11A118.7C13B—C12B—C15B122.3 (11)
C12A—C11A—H11A118.7C11B—C12B—C15B118.1 (10)
C11A—C12A—C13A116.6 (8)C14B—C13B—C12B120.8 (12)
C11A—C12A—C15A123.1 (10)C14B—C13B—H13B119.6
C13A—C12A—C15A120.1 (10)C12B—C13B—H13B119.6
C14A—C13A—C12A121.6 (8)C13B—C14B—C9B120.6 (12)
C14A—C13A—H13A119.2C13B—C14B—H14B119.7
C12A—C13A—H13A119.2C9B—C14B—H14B119.7
C13A—C14A—C9A120.9 (8)C12B—C15B—H15D109.5
C13A—C14A—H14A119.5C12B—C15B—H15E109.5
C9A—C14A—H14A119.5H15D—C15B—H15E109.5
C5A—C6A—C7A113.1 (6)C12B—C15B—H15F109.5
C5A—C6A—Br2A110.2 (5)H15D—C15B—H15F109.5
C7A—C6A—Br2A105.6 (6)H15E—C15B—H15F109.5
C5A—C6A—H6AA109.3C5B—C6B—C7B115.9 (6)
C7A—C6A—H6AA109.3C5B—C6B—Br1B106.1 (5)
Br2A—C6A—H6AA109.3C7B—C6B—Br1B107.6 (5)
C6A—C7A—C8A115.3 (7)C5B—C6B—H6BA109.0
C6A—C7A—Br1A106.7 (5)C7B—C6B—H6BA109.0
C8A—C7A—Br1A102.9 (7)Br1B—C6B—H6BA109.0
C6A—C7A—H7AA110.5C6B—C7B—C8B111.7 (8)
C8A—C7A—H7AA110.5C6B—C7B—Br2B109.3 (6)
Br1A—C7A—H7AA110.5C8B—C7B—Br2B105.6 (8)
C1B—O1B—C5B108.3 (8)C6B—C7B—H7BA110.0
O4B—N1B—O3B124.1 (14)C8B—C7B—H7BA110.0
O4B—N1B—C1B121.7 (12)Br2B—C7B—H7BA110.0
C5A—O1A—C1A—C2A5.5 (14)C5B—O1B—C1B—C2B−5.7 (17)
C5A—O1A—C1A—N1A−177.3 (19)C5B—O1B—C1B—N1B178 (2)
O4A—N1A—C1A—C2A169 (2)O4B—N1B—C1B—O1B−10 (5)
O3A—N1A—C1A—C2A5(4)O3B—N1B—C1B—O1B153 (2)
O4A—N1A—C1A—O1A−7(4)O4B—N1B—C1B—C2B175 (2)
O3A—N1A—C1A—O1A−172 (2)O3B—N1B—C1B—C2B−23 (5)
O1A—C1A—C2A—C3A−7.5 (16)O1B—C1B—C2B—C3B8.7 (19)
N1A—C1A—C2A—C3A176 (3)N1B—C1B—C2B—C3B−175 (3)
C1A—C2A—C3A—C5A6.3 (17)C1B—C2B—C3B—C5B−8(2)
C2A—C3A—C5A—O1A−3.3 (17)C2B—C3B—C5B—O1B5(2)
C2A—C3A—C5A—C6A174.7 (11)C2B—C3B—C5B—C6B−173.2 (13)
C1A—O1A—C5A—C3A−1.1 (14)C1B—O1B—C5B—C3B0.1 (17)
C1A—O1A—C5A—C6A−179.3 (11)C1B—O1B—C5B—C6B178.9 (13)
O2A—C8A—C9A—C10A3(3)O2B—C8B—C9B—C10B13 (4)
C7A—C8A—C9A—C10A−166 (2)C7B—C8B—C9B—C10B−176 (3)
O2A—C8A—C9A—C14A−175.3 (16)O2B—C8B—C9B—C14B−170 (2)
C7A—C8A—C9A—C14A15 (3)C7B—C8B—C9B—C14B1(3)
C14A—C9A—C10A—C11A−2(4)C14B—C9B—C10B—C11B−1(5)
C8A—C9A—C10A—C11A180 (2)C8B—C9B—C10B—C11B176 (3)
C9A—C10A—C11A—C12A−1(4)C9B—C10B—C11B—C12B3(5)
C10A—C11A—C12A—C13A3(3)C10B—C11B—C12B—C13B−1(4)
C10A—C11A—C12A—C15A−172 (3)C10B—C11B—C12B—C15B175 (3)
C11A—C12A—C13A—C14A−2(2)C11B—C12B—C13B—C14B−1(3)
C15A—C12A—C13A—C14A172.9 (17)C15B—C12B—C13B—C14B−177.8 (19)
C12A—C13A—C14A—C9A−1(3)C12B—C13B—C14B—C9B3(3)
C10A—C9A—C14A—C13A2(3)C10B—C9B—C14B—C13B−2(4)
C8A—C9A—C14A—C13A−178.9 (17)C8B—C9B—C14B—C13B−179 (2)
C3A—C5A—C6A—C7A140.5 (14)C3B—C5B—C6B—C7B−138.9 (18)
O1A—C5A—C6A—C7A−41.6 (10)O1B—C5B—C6B—C7B42.8 (10)
C3A—C5A—C6A—Br2A−101.6 (14)C3B—C5B—C6B—Br1B101.8 (18)
O1A—C5A—C6A—Br2A76.3 (8)O1B—C5B—C6B—Br1B−76.5 (8)
C5A—C6A—C7A—C8A−175.9 (8)C5B—C6B—C7B—C8B−178.2 (9)
Br2A—C6A—C7A—C8A63.6 (8)Br1B—C6B—C7B—C8B−59.7 (9)
C5A—C6A—C7A—Br1A−62.3 (6)C5B—C6B—C7B—Br2B65.3 (7)
Br2A—C6A—C7A—Br1A177.1 (3)Br1B—C6B—C7B—Br2B−176.3 (4)
O2A—C8A—C7A—C6A45.1 (16)O2B—C8B—C7B—C6B−43.9 (18)
C9A—C8A—C7A—C6A−144.9 (13)C9B—C8B—C7B—C6B145.4 (16)
O2A—C8A—C7A—Br1A−70.7 (13)O2B—C8B—C7B—Br2B74.8 (16)
C9A—C8A—C7A—Br1A99.4 (14)C9B—C8B—C7B—Br2B−95.9 (17)
D—H···AD—HH···AD···AD—H···A
C2A—H2AA···O3Ai0.932.533.210 (15)131
C3A—H3AA···O2Aii0.932.513.216 (12)133
C6A—H6AA···O2Aii0.982.333.217 (10)151
C13A—H13A···O3Aiii0.932.553.434 (13)158
Table 1

Hydrogen-bond geometry (Å, °)

D—H⋯AD—HH⋯ADAD—H⋯A
C2A—H2AA⋯O3Ai0.932.533.210 (15)131
C3A—H3AA⋯O2Aii0.932.513.216 (12)133
C6A—H6AA⋯O2Aii0.982.333.217 (10)151
C13A—H13A⋯O3Aiii0.932.553.434 (13)158

Symmetry codes: (i) ; (ii) ; (iii) .

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1.  A short history of SHELX.

Authors:  George M Sheldrick
Journal:  Acta Crystallogr A       Date:  2007-12-21       Impact factor: 2.290

2.  Convenient access to 1,3,4-trisubstituted pyrazoles carrying 5-nitrothiophene moiety via 1,3-dipolar cycloaddition of sydnones with acetylenic ketones and their antimicrobial evaluation.

Authors:  N Satheesha Rai; Balakrishna Kalluraya; B Lingappa; Shaliny Shenoy; Vedavati G Puranic
Journal:  Eur J Med Chem       Date:  2007-08-30       Impact factor: 6.514

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Journal:  Acta Crystallogr Sect E Struct Rep Online       Date:  2010-10-20

4.  Structure validation in chemical crystallography.

Authors:  Anthony L Spek
Journal:  Acta Crystallogr D Biol Crystallogr       Date:  2009-01-20
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1.  2,3-Dibromo-3-(5-nitro-2-fur-yl)-1-phenyl-propan-1-one.

Authors:  Tara Shahani; Hoong-Kun Fun; Balakrishna Kalluraya
Journal:  Acta Crystallogr Sect E Struct Rep Online       Date:  2011-02-02
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