organic compounds
1,4-Dibromonaphthalene-2,3-diol
aKey Laboratory of Pesticide and Chemical Biology of Ministry of Education, College of Chemistry, Central China Normal University, Wuhan 430079, People's Republic of China
*Correspondence e-mail: gao_qinghe@163.com
In the title compound (r.m.s. deviation for the non-H atoms = 0.020 Å), C10H6Br2O2, an intramolecular O—H⋯O hydrogen bond generates an S(6) ring. In the crystal, the same H atom also forms an intermolecular O—H⋯O hydrogen bond, generating a C(2) chain propagating in [100]. The other O—H hydrogen forms a weak O—H⋯π interaction, and short Br⋯Br contacts [3.5972 (9) Å] also occur.
Related literature
For the synthesis, see: Lai et al. (1993). For a related structure, see: Ahn et al. (2009).
Experimental
Crystal data
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Data collection: SMART (Bruker, 2001); cell SAINT-Plus (Bruker, 2001); data reduction: SAINT-Plus; program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: PLATON (Spek, 2009); software used to prepare material for publication: PLATON.
Supporting information
10.1107/S1600536811026997/hb5940sup1.cif
contains datablocks I, global. DOI:Structure factors: contains datablock I. DOI: 10.1107/S1600536811026997/hb5940Isup2.hkl
Supporting information file. DOI: 10.1107/S1600536811026997/hb5940Isup3.cml
The title compound was synthesized according to the literature method (Lai et al., 1993). Crystals of (I) were grown by slow evaporation of a chloroform-methanol (5:1) solution at room temperature.
All H atoms were positioned in geometrically idealized positions and constrained to ride on their parent atoms, with C—H distances in the range 0.93–0.98 Å and Uiso(H) = 1.2Ueq(C) or Uiso(H) =1.5Ueq(C).
Data collection: SMART (Bruker, 2001); cell
SAINT-Plus (Bruker, 2001); data reduction: SAINT-Plus (Bruker, 2001); program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: PLATON (Spek, 2009); software used to prepare material for publication: PLATON (Spek, 2009).C10H6Br2O2 | F(000) = 608 |
Mr = 317.96 | Dx = 2.203 Mg m−3 |
Orthorhombic, P212121 | Mo Kα radiation, λ = 0.71073 Å |
Hall symbol: P 2ac 2ab | Cell parameters from 3125 reflections |
a = 5.0928 (9) Å | θ = 2.6–27.3° |
b = 11.932 (2) Å | µ = 8.42 mm−1 |
c = 15.779 (3) Å | T = 298 K |
V = 958.9 (3) Å3 | Block, colorless |
Z = 4 | 0.16 × 0.12 × 0.10 mm |
Bruker SMART APEX CCD diffractometer | 2363 independent reflections |
Radiation source: fine-focus sealed tube | 2156 reflections with I > 2σ(I) |
Graphite monochromator | Rint = 0.039 |
phi and ω scans | θmax = 28.3°, θmin = 2.1° |
Absorption correction: multi-scan (SADABS; Bruker, 2001) | h = −6→5 |
Tmin = 0.356, Tmax = 0.486 | k = −15→15 |
6339 measured reflections | l = −18→21 |
Refinement on F2 | Secondary atom site location: difference Fourier map |
Least-squares matrix: full | Hydrogen site location: inferred from neighbouring sites |
R[F2 > 2σ(F2)] = 0.029 | H atoms treated by a mixture of independent and constrained refinement |
wR(F2) = 0.068 | w = 1/[σ2(Fo2) + (0.0277P)2] where P = (Fo2 + 2Fc2)/3 |
S = 1.00 | (Δ/σ)max = 0.001 |
2363 reflections | Δρmax = 0.37 e Å−3 |
133 parameters | Δρmin = −0.40 e Å−3 |
2 restraints | Absolute structure: Flack (1983), 899 Friedel pairs |
Primary atom site location: structure-invariant direct methods | Absolute structure parameter: 0.034 (15) |
C10H6Br2O2 | V = 958.9 (3) Å3 |
Mr = 317.96 | Z = 4 |
Orthorhombic, P212121 | Mo Kα radiation |
a = 5.0928 (9) Å | µ = 8.42 mm−1 |
b = 11.932 (2) Å | T = 298 K |
c = 15.779 (3) Å | 0.16 × 0.12 × 0.10 mm |
Bruker SMART APEX CCD diffractometer | 2363 independent reflections |
Absorption correction: multi-scan (SADABS; Bruker, 2001) | 2156 reflections with I > 2σ(I) |
Tmin = 0.356, Tmax = 0.486 | Rint = 0.039 |
6339 measured reflections |
R[F2 > 2σ(F2)] = 0.029 | H atoms treated by a mixture of independent and constrained refinement |
wR(F2) = 0.068 | Δρmax = 0.37 e Å−3 |
S = 1.00 | Δρmin = −0.40 e Å−3 |
2363 reflections | Absolute structure: Flack (1983), 899 Friedel pairs |
133 parameters | Absolute structure parameter: 0.034 (15) |
2 restraints |
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 | ||
Br1 | −0.18029 (8) | 0.17357 (3) | 0.16514 (2) | 0.04109 (12) | |
Br2 | 0.61683 (7) | 0.45789 (3) | 0.40915 (2) | 0.04028 (12) | |
C1 | 0.4056 (7) | 0.3970 (3) | 0.24593 (19) | 0.0273 (7) | |
C2 | 0.5849 (7) | 0.4724 (3) | 0.2089 (2) | 0.0331 (7) | |
H2 | 0.7024 | 0.5113 | 0.2431 | 0.040* | |
C3 | 0.5879 (8) | 0.4891 (3) | 0.1222 (2) | 0.0409 (9) | |
H3 | 0.7077 | 0.5386 | 0.0982 | 0.049* | |
C4 | 0.4101 (8) | 0.4313 (3) | 0.0709 (2) | 0.0423 (9) | |
H4 | 0.4103 | 0.4444 | 0.0128 | 0.051* | |
C5 | 0.2376 (8) | 0.3569 (3) | 0.1037 (2) | 0.0360 (8) | |
H5 | 0.1239 | 0.3183 | 0.0679 | 0.043* | |
C6 | 0.2291 (7) | 0.3372 (3) | 0.19325 (18) | 0.0285 (7) | |
C7 | 0.0531 (7) | 0.2609 (3) | 0.23054 (18) | 0.0289 (7) | |
C8 | 0.0467 (7) | 0.2438 (3) | 0.31682 (19) | 0.0291 (7) | |
C9 | 0.2215 (7) | 0.3043 (3) | 0.37007 (19) | 0.0285 (7) | |
C10 | 0.3945 (7) | 0.3778 (3) | 0.33519 (19) | 0.0267 (6) | |
O1 | −0.1160 (6) | 0.1729 (2) | 0.35854 (16) | 0.0424 (6) | |
H1A | −0.251 (5) | 0.151 (4) | 0.336 (3) | 0.064* | |
O2 | 0.2141 (6) | 0.2872 (2) | 0.45569 (15) | 0.0389 (6) | |
H2A | 0.072 (5) | 0.261 (4) | 0.468 (3) | 0.058* |
U11 | U22 | U33 | U12 | U13 | U23 | |
Br1 | 0.0417 (2) | 0.0386 (2) | 0.04299 (19) | −0.00633 (18) | −0.00583 (16) | −0.00902 (16) |
Br2 | 0.0427 (2) | 0.0432 (2) | 0.03491 (16) | −0.00489 (18) | −0.00972 (15) | −0.00380 (15) |
C1 | 0.0291 (18) | 0.0237 (15) | 0.0290 (14) | 0.0050 (14) | 0.0019 (14) | −0.0014 (12) |
C2 | 0.0373 (19) | 0.0308 (18) | 0.0311 (14) | −0.0022 (16) | 0.0035 (14) | −0.0004 (14) |
C3 | 0.046 (2) | 0.041 (2) | 0.0359 (16) | −0.0081 (18) | 0.0107 (16) | 0.0062 (16) |
C4 | 0.051 (2) | 0.048 (2) | 0.0274 (15) | 0.002 (2) | 0.0016 (15) | 0.0048 (15) |
C5 | 0.042 (2) | 0.0394 (19) | 0.0269 (15) | 0.0025 (16) | −0.0019 (14) | −0.0007 (14) |
C6 | 0.0333 (19) | 0.0274 (16) | 0.0248 (13) | 0.0058 (15) | 0.0004 (12) | −0.0010 (13) |
C7 | 0.0299 (18) | 0.0271 (17) | 0.0296 (15) | −0.0002 (14) | −0.0038 (13) | −0.0058 (13) |
C8 | 0.0304 (18) | 0.0238 (16) | 0.0332 (15) | 0.0018 (14) | 0.0028 (13) | 0.0027 (13) |
C9 | 0.0329 (19) | 0.0290 (17) | 0.0235 (13) | 0.0054 (14) | −0.0009 (13) | 0.0020 (12) |
C10 | 0.0298 (16) | 0.0245 (15) | 0.0256 (13) | −0.0004 (14) | −0.0059 (14) | −0.0037 (12) |
O1 | 0.0440 (16) | 0.0422 (15) | 0.0408 (13) | −0.0125 (14) | 0.0013 (12) | 0.0070 (11) |
O2 | 0.0422 (16) | 0.0486 (15) | 0.0258 (10) | −0.0055 (13) | 0.0010 (10) | 0.0066 (11) |
Br1—C7 | 1.888 (3) | C5—C6 | 1.434 (4) |
Br2—C10 | 1.886 (3) | C5—H5 | 0.9300 |
C1—C2 | 1.409 (5) | C6—C7 | 1.407 (5) |
C1—C6 | 1.417 (5) | C7—C8 | 1.377 (4) |
C1—C10 | 1.428 (4) | C8—O1 | 1.355 (4) |
C2—C3 | 1.383 (4) | C8—C9 | 1.421 (5) |
C2—H2 | 0.9300 | C9—C10 | 1.359 (5) |
C3—C4 | 1.397 (5) | C9—O2 | 1.367 (4) |
C3—H3 | 0.9300 | O1—H1A | 0.819 (10) |
C4—C5 | 1.352 (5) | O2—H2A | 0.810 (10) |
C4—H4 | 0.9300 | ||
C2—C1—C6 | 119.3 (3) | C7—C6—C5 | 122.5 (3) |
C2—C1—C10 | 122.5 (3) | C1—C6—C5 | 118.5 (3) |
C6—C1—C10 | 118.2 (3) | C8—C7—C6 | 121.6 (3) |
C3—C2—C1 | 120.6 (3) | C8—C7—Br1 | 116.4 (3) |
C3—C2—H2 | 119.7 | C6—C7—Br1 | 122.0 (2) |
C1—C2—H2 | 119.7 | O1—C8—C7 | 126.0 (3) |
C2—C3—C4 | 119.7 (3) | O1—C8—C9 | 114.4 (3) |
C2—C3—H3 | 120.1 | C7—C8—C9 | 119.6 (3) |
C4—C3—H3 | 120.1 | C10—C9—O2 | 121.0 (3) |
C5—C4—C3 | 121.6 (3) | C10—C9—C8 | 119.6 (3) |
C5—C4—H4 | 119.2 | O2—C9—C8 | 119.4 (3) |
C3—C4—H4 | 119.2 | C9—C10—C1 | 121.9 (3) |
C4—C5—C6 | 120.3 (3) | C9—C10—Br2 | 117.7 (2) |
C4—C5—H5 | 119.9 | C1—C10—Br2 | 120.4 (2) |
C6—C5—H5 | 119.9 | C8—O1—H1A | 120 (3) |
C7—C6—C1 | 119.0 (3) | C9—O2—H2A | 108 (3) |
C6—C1—C2—C3 | 0.7 (5) | Br1—C7—C8—O1 | −2.0 (5) |
C10—C1—C2—C3 | −179.5 (3) | C6—C7—C8—C9 | 0.0 (5) |
C1—C2—C3—C4 | 0.5 (6) | Br1—C7—C8—C9 | 178.4 (2) |
C2—C3—C4—C5 | −1.6 (6) | O1—C8—C9—C10 | 179.8 (3) |
C3—C4—C5—C6 | 1.4 (6) | C7—C8—C9—C10 | −0.5 (5) |
C2—C1—C6—C7 | 179.1 (3) | O1—C8—C9—O2 | 0.3 (5) |
C10—C1—C6—C7 | −0.7 (5) | C7—C8—C9—O2 | 179.9 (3) |
C2—C1—C6—C5 | −0.8 (5) | O2—C9—C10—C1 | 180.0 (3) |
C10—C1—C6—C5 | 179.4 (3) | C8—C9—C10—C1 | 0.4 (5) |
C4—C5—C6—C7 | 179.8 (3) | O2—C9—C10—Br2 | −1.7 (4) |
C4—C5—C6—C1 | −0.2 (5) | C8—C9—C10—Br2 | 178.8 (2) |
C1—C6—C7—C8 | 0.6 (5) | C2—C1—C10—C9 | −179.6 (3) |
C5—C6—C7—C8 | −179.5 (3) | C6—C1—C10—C9 | 0.2 (5) |
C1—C6—C7—Br1 | −177.7 (2) | C2—C1—C10—Br2 | 2.0 (4) |
C5—C6—C7—Br1 | 2.2 (5) | C6—C1—C10—Br2 | −178.1 (2) |
C6—C7—C8—O1 | 179.6 (3) |
Cg1 is the centroid of the C1–C6 ring. |
D—H···A | D—H | H···A | D···A | D—H···A |
O1—H1A···Cg1i | 0.82 (1) | 2.94 (5) | 3.441 (3) | 122 (4) |
O2—H2A···O2ii | 0.81 (1) | 2.26 (2) | 3.038 (3) | 161 (4) |
O2—H2A···O1 | 0.81 (1) | 2.24 (4) | 2.653 (4) | 112 (4) |
Symmetry codes: (i) −x, y−1/2, −z+1/2; (ii) x−1/2, −y+1/2, −z+1. |
Experimental details
Crystal data | |
Chemical formula | C10H6Br2O2 |
Mr | 317.96 |
Crystal system, space group | Orthorhombic, P212121 |
Temperature (K) | 298 |
a, b, c (Å) | 5.0928 (9), 11.932 (2), 15.779 (3) |
V (Å3) | 958.9 (3) |
Z | 4 |
Radiation type | Mo Kα |
µ (mm−1) | 8.42 |
Crystal size (mm) | 0.16 × 0.12 × 0.10 |
Data collection | |
Diffractometer | Bruker SMART APEX CCD diffractometer |
Absorption correction | Multi-scan (SADABS; Bruker, 2001) |
Tmin, Tmax | 0.356, 0.486 |
No. of measured, independent and observed [I > 2σ(I)] reflections | 6339, 2363, 2156 |
Rint | 0.039 |
(sin θ/λ)max (Å−1) | 0.667 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.029, 0.068, 1.00 |
No. of reflections | 2363 |
No. of parameters | 133 |
No. of restraints | 2 |
H-atom treatment | H atoms treated by a mixture of independent and constrained refinement |
Δρmax, Δρmin (e Å−3) | 0.37, −0.40 |
Absolute structure | Flack (1983), 899 Friedel pairs |
Absolute structure parameter | 0.034 (15) |
Computer programs: SMART (Bruker, 2001), SAINT-Plus (Bruker, 2001), SHELXS97 (Sheldrick, 2008), SHELXL97 (Sheldrick, 2008), PLATON (Spek, 2009).
Cg1 is the centroid of the C1–C6 ring. |
D—H···A | D—H | H···A | D···A | D—H···A |
O1—H1A···Cg1i | 0.819 (10) | 2.94 (5) | 3.441 (3) | 122 (4) |
O2—H2A···O2ii | 0.810 (10) | 2.261 (17) | 3.038 (3) | 161 (4) |
O2—H2A···O1 | 0.810 (10) | 2.24 (4) | 2.653 (4) | 112 (4) |
Symmetry codes: (i) −x, y−1/2, −z+1/2; (ii) x−1/2, −y+1/2, −z+1. |
Acknowledgements
The authors are grateful to the Central China Normal University for financial support and thank Qi Li for the X-ray data collection.
References
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