organic compounds
Benzene-1,3,5-triol at 105 K
aDepartment of Chemistry, University of Oslo, PO Box 1033 Blindern, N-0315 Oslo, Norway
*Correspondence e-mail: c.h.gorbitz@kjemi.uio.no
The structure of the title compound, C6H6O3, has been redetermined at low temperature [room-temperature structure: Maartmann-Moe (1965). Acta Cryst. 19, 155–157]. The molecule is planar with approximate D3h yet it crystallizes in the chiral orthorhombic P212121 with a three-dimensional hydrogen-bonding network containing infinite O—H⋯O—H⋯O—H chains.
Related literature
For the structure at room temperature, see: Maartmann-Moe (1965). For the hydrate structure, see: Wallwork & Powell (1957).
Experimental
Crystal data
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Refinement
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Data collection: SMART (Bruker, 1998); cell SAINT-Plus (Bruker, 2001); data reduction: SAINT-Plus; 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.
Supporting information
10.1107/S1600536808030638/bi2305sup1.cif
contains datablocks I, global. DOI:Structure factors: contains datablock I. DOI: 10.1107/S1600536808030638/bi2305Isup2.hkl
The title compound was obtained from Fluka. Crystals were grown by diffusion of hexane into 30 µl of a solution containing 2.1 mg benzene-1,3,5-triol and 1.3 mg triazin in 3-methyl-2-butanone.
Positional parameters were refined for hydroxylic H atoms, while H atoms bonded to C were positioned with idealized geometry and C—H distance 0.95 Å. Uiso values were 1.5Ueq(O) and 1.2Ueq(C). In the absence of significant
effects, 1585 Friedel pairs were merged.Data collection: SMART (Bruker, 1998); cell
SAINT (Bruker, 2001); data reduction: SAINT (Bruker, 2001); program(s) used to solve structure: SHELXTL (Sheldrick, 2008); program(s) used to refine structure: SHELXTL (Sheldrick, 2008); molecular graphics: SHELXTL (Sheldrick, 2008); software used to prepare material for publication: SHELXTL (Sheldrick, 2008).C6H6O3 | F(000) = 264 |
Mr = 126.11 | Dx = 1.506 Mg m−3 |
Orthorhombic, P212121 | Mo Kα radiation, λ = 0.71073 Å |
Hall symbol: P 2ac 2ab | Cell parameters from 4652 reflections |
a = 4.7778 (2) Å | θ = 2.7–27.1° |
b = 9.3581 (4) Å | µ = 0.12 mm−1 |
c = 12.4433 (6) Å | T = 105 K |
V = 556.35 (4) Å3 | Needle, colourless |
Z = 4 | 0.20 × 0.08 × 0.05 mm |
Siemens SMART CCD diffractometer | 743 independent reflections |
Radiation source: fine-focus sealed tube | 728 reflections with I > 2σ(I) |
Graphite monochromator | Rint = 0.014 |
ω scans | θmax = 27.1°, θmin = 2.7° |
Absorption correction: multi-scan (SADABS; Sheldrick, 1996) | h = −6→6 |
Tmin = 0.916, Tmax = 0.997 | k = −11→11 |
6178 measured 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)] = 0.027 | Hydrogen site location: inferred from neighbouring sites |
wR(F2) = 0.081 | H atoms treated by a mixture of independent and constrained refinement |
S = 1.13 | w = 1/[σ2(Fo2) + (0.054P)2 + 0.1017P] where P = (Fo2 + 2Fc2)/3 |
743 reflections | (Δ/σ)max < 0.001 |
91 parameters | Δρmax = 0.27 e Å−3 |
0 restraints | Δρmin = −0.20 e Å−3 |
C6H6O3 | V = 556.35 (4) Å3 |
Mr = 126.11 | Z = 4 |
Orthorhombic, P212121 | Mo Kα radiation |
a = 4.7778 (2) Å | µ = 0.12 mm−1 |
b = 9.3581 (4) Å | T = 105 K |
c = 12.4433 (6) Å | 0.20 × 0.08 × 0.05 mm |
Siemens SMART CCD diffractometer | 743 independent reflections |
Absorption correction: multi-scan (SADABS; Sheldrick, 1996) | 728 reflections with I > 2σ(I) |
Tmin = 0.916, Tmax = 0.997 | Rint = 0.014 |
6178 measured reflections |
R[F2 > 2σ(F2)] = 0.027 | 0 restraints |
wR(F2) = 0.081 | H atoms treated by a mixture of independent and constrained refinement |
S = 1.13 | Δρmax = 0.27 e Å−3 |
743 reflections | Δρmin = −0.20 e Å−3 |
91 parameters |
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. Data were collected by measuring three sets of exposures with the detector set at 2θ = 29°, crystal-to-detector distance 5.00 cm. Refinement of F2 against ALL reflections. |
x | y | z | Uiso*/Ueq | ||
O1 | 0.2140 (2) | 0.48267 (10) | 0.56722 (8) | 0.0160 (3) | |
H1 | 0.189 (5) | 0.560 (2) | 0.5979 (15) | 0.024* | |
O2 | 0.8083 (3) | 0.25657 (10) | 0.31075 (8) | 0.0167 (3) | |
H2 | 0.760 (5) | 0.189 (2) | 0.3432 (14) | 0.025* | |
O3 | 0.7415 (2) | 0.76483 (10) | 0.32139 (8) | 0.0160 (3) | |
H3 | 0.884 (5) | 0.7549 (19) | 0.2792 (16) | 0.024* | |
C1 | 0.3967 (3) | 0.49437 (14) | 0.48167 (11) | 0.0135 (3) | |
C2 | 0.5004 (3) | 0.36808 (13) | 0.43819 (11) | 0.0141 (3) | |
H21 | 0.4423 | 0.2779 | 0.4652 | 0.017* | |
C3 | 0.6913 (3) | 0.37730 (13) | 0.35413 (10) | 0.0135 (3) | |
C4 | 0.7758 (3) | 0.50800 (15) | 0.31202 (11) | 0.0150 (3) | |
H41 | 0.9054 | 0.5126 | 0.2542 | 0.018* | |
C5 | 0.6651 (3) | 0.63152 (13) | 0.35689 (10) | 0.0134 (3) | |
C6 | 0.4732 (3) | 0.62700 (13) | 0.44129 (11) | 0.0137 (3) | |
H61 | 0.3970 | 0.7124 | 0.4704 | 0.016* |
U11 | U22 | U33 | U12 | U13 | U23 | |
O1 | 0.0199 (5) | 0.0107 (5) | 0.0173 (5) | −0.0003 (4) | 0.0057 (4) | −0.0006 (3) |
O2 | 0.0217 (5) | 0.0090 (5) | 0.0194 (5) | 0.0017 (4) | 0.0058 (4) | 0.0000 (4) |
O3 | 0.0209 (6) | 0.0093 (5) | 0.0177 (5) | −0.0015 (4) | 0.0054 (5) | 0.0009 (3) |
C1 | 0.0127 (6) | 0.0142 (6) | 0.0136 (6) | −0.0006 (6) | −0.0006 (5) | −0.0004 (5) |
C2 | 0.0152 (6) | 0.0109 (6) | 0.0161 (6) | −0.0009 (5) | −0.0003 (6) | 0.0017 (5) |
C3 | 0.0142 (6) | 0.0108 (6) | 0.0154 (6) | 0.0014 (6) | −0.0013 (6) | −0.0012 (5) |
C4 | 0.0158 (6) | 0.0141 (6) | 0.0150 (6) | 0.0000 (5) | 0.0032 (5) | 0.0003 (5) |
C5 | 0.0152 (7) | 0.0104 (6) | 0.0145 (6) | −0.0017 (6) | −0.0014 (6) | 0.0012 (5) |
C6 | 0.0151 (6) | 0.0110 (6) | 0.0152 (6) | 0.0005 (5) | 0.0008 (6) | −0.0020 (5) |
O1—C1 | 1.3808 (17) | C2—C3 | 1.3905 (19) |
O1—H1 | 0.83 (2) | C2—H21 | 0.9500 |
O2—C3 | 1.3712 (16) | C3—C4 | 1.3905 (18) |
O2—H2 | 0.79 (2) | C4—C5 | 1.3884 (19) |
O3—C5 | 1.3730 (15) | C4—H41 | 0.9500 |
O3—H3 | 0.86 (2) | C5—C6 | 1.3945 (19) |
C1—C6 | 1.3881 (17) | C6—H61 | 0.9500 |
C1—C2 | 1.3910 (18) | ||
C1—O1—H1 | 112.2 (14) | C2—C3—C4 | 121.90 (12) |
C3—O2—H2 | 109.9 (14) | C5—C4—C3 | 118.05 (12) |
C5—O3—H3 | 107.9 (12) | C5—C4—H41 | 121.0 |
O1—C1—C6 | 121.10 (11) | C3—C4—H41 | 121.0 |
O1—C1—C2 | 117.24 (11) | O3—C5—C4 | 121.72 (12) |
C6—C1—C2 | 121.67 (12) | O3—C5—C6 | 116.41 (11) |
C3—C2—C1 | 118.27 (12) | C4—C5—C6 | 121.87 (12) |
C3—C2—H21 | 120.9 | C1—C6—C5 | 118.22 (12) |
C1—C2—H21 | 120.9 | C1—C6—H61 | 120.9 |
O2—C3—C2 | 120.83 (12) | C5—C6—H61 | 120.9 |
O2—C3—C4 | 117.26 (12) | ||
O1—C1—C2—C3 | −178.06 (12) | O1—C1—C6—C5 | 178.09 (12) |
C6—C1—C2—C3 | 1.8 (2) | C2—C1—C6—C5 | −1.8 (2) |
C1—C2—C3—O2 | 177.59 (12) | O3—C5—C6—C1 | −178.14 (12) |
C1—C2—C3—C4 | −1.1 (2) | C4—C5—C6—C1 | 1.0 (2) |
O2—C3—C4—C5 | −178.32 (13) | H1—O1—C1—C6 | −13.0 (16) |
C2—C3—C4—C5 | 0.4 (2) | H2—O2—C3—C2 | −4.3 (16) |
C3—C4—C5—O3 | 178.75 (13) | H3—O3—C5—C4 | −10.8 (14) |
C3—C4—C5—C6 | −0.4 (2) |
D—H···A | D—H | H···A | D···A | D—H···A |
O1—H1···O3i | 0.83 (2) | 1.94 (2) | 2.7426 (13) | 164 (2) |
O2—H2···O1ii | 0.79 (2) | 1.97 (2) | 2.7424 (14) | 169 (2) |
O3—H3···O2iii | 0.86 (2) | 1.85 (2) | 2.7086 (16) | 173.3 (17) |
Symmetry codes: (i) x−1/2, −y+3/2, −z+1; (ii) x+1/2, −y+1/2, −z+1; (iii) −x+2, y+1/2, −z+1/2. |
Experimental details
Crystal data | |
Chemical formula | C6H6O3 |
Mr | 126.11 |
Crystal system, space group | Orthorhombic, P212121 |
Temperature (K) | 105 |
a, b, c (Å) | 4.7778 (2), 9.3581 (4), 12.4433 (6) |
V (Å3) | 556.35 (4) |
Z | 4 |
Radiation type | Mo Kα |
µ (mm−1) | 0.12 |
Crystal size (mm) | 0.20 × 0.08 × 0.05 |
Data collection | |
Diffractometer | Siemens SMART CCD diffractometer |
Absorption correction | Multi-scan (SADABS; Sheldrick, 1996) |
Tmin, Tmax | 0.916, 0.997 |
No. of measured, independent and observed [I > 2σ(I)] reflections | 6178, 743, 728 |
Rint | 0.014 |
(sin θ/λ)max (Å−1) | 0.641 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.027, 0.081, 1.13 |
No. of reflections | 743 |
No. of parameters | 91 |
H-atom treatment | H atoms treated by a mixture of independent and constrained refinement |
Δρmax, Δρmin (e Å−3) | 0.27, −0.20 |
Computer programs: SMART (Bruker, 1998), SAINT (Bruker, 2001), SHELXTL (Sheldrick, 2008).
D—H···A | D—H | H···A | D···A | D—H···A |
O1—H1···O3i | 0.83 (2) | 1.94 (2) | 2.7426 (13) | 164 (2) |
O2—H2···O1ii | 0.79 (2) | 1.97 (2) | 2.7424 (14) | 169 (2) |
O3—H3···O2iii | 0.86 (2) | 1.85 (2) | 2.7086 (16) | 173.3 (17) |
Symmetry codes: (i) x−1/2, −y+3/2, −z+1; (ii) x+1/2, −y+1/2, −z+1; (iii) −x+2, y+1/2, −z+1/2. |
Acknowledgements
The purchase of the diffractometer was made possible through support from the Research Council of Norway (NFR).
References
Bruker (1998). SMART. Bruker AXS Inc., Madison, Wisconsin, USA. Google Scholar
Bruker (2001). SAINT-Plus. Bruker AXS Inc., Madison, Wisconsin, USA. Google Scholar
Maartmann-Moe, K. (1965). Acta Cryst. 19, 155–157. CSD CrossRef CAS IUCr Journals Web of Science Google Scholar
Sheldrick, G. M. (1996). SADABS. University of Göttingen, Germany. Google Scholar
Sheldrick, G. M. (2008). Acta Cryst. A64, 112–122. Web of Science CrossRef CAS IUCr Journals Google Scholar
Wallwork, S. C. & Powell, H. M. (1957). Acta Cryst. 10, 48–52. CSD CrossRef CAS IUCr Journals Web of Science Google Scholar
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 structure of the benzene-1,3,5-triol, commonly known as phloroglucinol, is shown in Fig. 1. The molecule is essentially planar, with D3h point symmetry, having only small out-of-plane rotations for the hydroxyl groups. Rather than forming a layer-like structure, a folded molecular aggregation pattern is observed in the crystal (Fig. 2) giving a three-dimensional hydrogen-bonding pattern. The three hydrogen bonds listed in Table 1 form an infinite zigzag chain along the b axis as shown in Fig. 3. The agreement with the original structure determination (Maartmann-Moe, 1965) is generally good, but with some significant changes in the hydrogen bonding geometries.
Benzene-1,3,5-triol has also been crystallized as a dihydrate, which is divided into layers with water molecules as connectors (Wallwork & Powell, 1957).