organic compounds
2,2′-(p-Phenylenedimethylene)bis(propane-1,3-diol)
aSchool of Chemistry and Chemical Engineering, Jiangsu Polytechnic University, Changzhou 213164, People's Republic of China
*Correspondence e-mail: xiaoqiang_sun@yahoo.com.cn
The molecule of the title compound, C14H22O4, is centrosymmetric. In the crystal, the molecules are linked through O—H⋯O hydrogen bonds into a three-dimensional network.
Experimental
Crystal data
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Refinement
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Data collection: SMART (Bruker, 2000); cell SAINT (Bruker, 2000); 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.
Supporting information
10.1107/S1600536808041688/gk2172sup1.cif
contains datablocks I, global. DOI:Structure factors: contains datablock I. DOI: 10.1107/S1600536808041688/gk2172Isup2.hkl
Tetraethyl 2,2'-(p-phenylenedimethylene)dimalonate was prepared according to the literature procedure (Xi et al., 2008). In a flame-dryed, round-bottom flask was placed freshly distilled THF (80 ml) under dry nitrogen gas and the flask was placed in an ice-bath. Subsequently LiAlH4 (2.128 g, 56 mmol) was slowly added with stirring, followed by a dropwise addition of the solution of tetraethyl 2,2'-(p-phenylenedimethylene)dimalonate (2.95 g,7 mmol) in THF (20 ml) . After stirring for 3 h at room temperature, a
of Na2SO4(3 ml) was added. Stirring was continued for next 10 min. Then ethanol (8 mL) was added, the mixture was heated to 333 K. Lithium and aluminium salts were separated by filtration on celite. Filtrate was evaporated and the residue purified by crystallization, yielding the title compound (1.09 g, yield 61%; m.p. 448–449 K). Crystals suitable for X-ray analysis were obtained by slow evaporation of an aqueous solution at 288 K.Carbon bound H atoms were placed geometrically and treated as riding on their carriers, with methylene C—H distance of 0.97 Å, aromatic C—H of 0.93 Å and Uiso(H) = 1.2Ueq(C). H atoms from hydroxyl groups were refined with the distance restraint of O—H = 0.82 (2) Å and Uiso(H) = 1.5 Ueq(O)..
Data collection: SMART (Bruker, 2000); cell
SMART (Bruker, 2000); data reduction: SAINT (Bruker, 2000); 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).C14H22O4 | Dx = 1.256 Mg m−3 |
Mr = 254.32 | Melting point = 448–449 K |
Orthorhombic, Pbca | Mo Kα radiation, λ = 0.71073 Å |
Hall symbol: -P 2ac 2ab | Cell parameters from 2317 reflections |
a = 9.939 (6) Å | θ = 2.6–27.1° |
b = 8.803 (5) Å | µ = 0.09 mm−1 |
c = 15.366 (9) Å | T = 291 K |
V = 1344.5 (14) Å3 | Block, colourless |
Z = 4 | 0.30 × 0.24 × 0.22 mm |
F(000) = 552 |
Bruker SMART APEX CCD diffractometer | 1636 independent reflections |
Radiation source: sealed tube | 1215 reflections with I > 2σ(I) |
Graphite monochromator | Rint = 0.057 |
ϕ and ω scans | θmax = 28.3°, θmin = 2.7° |
Absorption correction: multi-scan (SADABS; Bruker, 2000) | h = −5→13 |
Tmin = 0.97, Tmax = 0.98 | k = −11→11 |
7571 measured reflections | l = −20→20 |
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)] = 0.038 | Hydrogen site location: inferred from neighbouring sites |
wR(F2) = 0.115 | H atoms treated by a mixture of independent and constrained refinement |
S = 1.08 | w = 1/[σ2(Fo2) + (0.06P)2] where P = (Fo2 + 2Fc2)/3 |
1636 reflections | (Δ/σ)max < 0.001 |
88 parameters | Δρmax = 0.19 e Å−3 |
2 restraints | Δρmin = −0.17 e Å−3 |
C14H22O4 | V = 1344.5 (14) Å3 |
Mr = 254.32 | Z = 4 |
Orthorhombic, Pbca | Mo Kα radiation |
a = 9.939 (6) Å | µ = 0.09 mm−1 |
b = 8.803 (5) Å | T = 291 K |
c = 15.366 (9) Å | 0.30 × 0.24 × 0.22 mm |
Bruker SMART APEX CCD diffractometer | 1636 independent reflections |
Absorption correction: multi-scan (SADABS; Bruker, 2000) | 1215 reflections with I > 2σ(I) |
Tmin = 0.97, Tmax = 0.98 | Rint = 0.057 |
7571 measured reflections |
R[F2 > 2σ(F2)] = 0.038 | 2 restraints |
wR(F2) = 0.115 | H atoms treated by a mixture of independent and constrained refinement |
S = 1.08 | Δρmax = 0.19 e Å−3 |
1636 reflections | Δρmin = −0.17 e Å−3 |
88 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. 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 | ||
C1 | 1.09492 (13) | 0.40412 (13) | 0.53366 (8) | 0.0388 (3) | |
H1 | 1.1600 | 0.3402 | 0.5572 | 0.047* | |
C2 | 1.09178 (14) | 0.55517 (13) | 0.55850 (8) | 0.0396 (3) | |
H2 | 1.1548 | 0.5910 | 0.5982 | 0.048* | |
C3 | 0.99643 (11) | 0.65355 (12) | 0.52522 (8) | 0.0316 (3) | |
C4 | 0.99230 (13) | 0.81711 (12) | 0.55423 (8) | 0.0347 (3) | |
H4A | 0.9288 | 0.8719 | 0.5180 | 0.042* | |
H4B | 1.0804 | 0.8620 | 0.5454 | 0.042* | |
C5 | 0.95220 (12) | 0.83713 (12) | 0.64958 (7) | 0.0303 (3) | |
H5 | 1.0045 | 0.7646 | 0.6842 | 0.036* | |
C6 | 0.98372 (12) | 0.99558 (14) | 0.68286 (9) | 0.0371 (3) | |
H6A | 0.9369 | 1.0694 | 0.6471 | 0.045* | |
H6B | 0.9502 | 1.0053 | 0.7419 | 0.045* | |
C7 | 0.80474 (13) | 0.80040 (14) | 0.66200 (8) | 0.0399 (3) | |
H7A | 0.7512 | 0.8777 | 0.6333 | 0.048* | |
H7B | 0.7853 | 0.7039 | 0.6342 | 0.048* | |
O1 | 1.12348 (9) | 1.02918 (10) | 0.68214 (6) | 0.0417 (3) | |
H1A | 1.1656 (18) | 0.9562 (18) | 0.7010 (10) | 0.063* | |
O2 | 0.76614 (10) | 0.79212 (10) | 0.75078 (6) | 0.0471 (3) | |
H2A | 0.8000 (18) | 0.7167 (18) | 0.7731 (12) | 0.071* |
U11 | U22 | U33 | U12 | U13 | U23 | |
C1 | 0.0425 (7) | 0.0340 (7) | 0.0399 (7) | 0.0101 (5) | −0.0108 (5) | −0.0035 (5) |
C2 | 0.0430 (7) | 0.0361 (7) | 0.0398 (7) | 0.0027 (5) | −0.0128 (6) | −0.0076 (5) |
C3 | 0.0383 (7) | 0.0269 (6) | 0.0297 (6) | 0.0000 (5) | 0.0018 (5) | −0.0016 (4) |
C4 | 0.0434 (7) | 0.0249 (6) | 0.0357 (7) | −0.0014 (5) | 0.0023 (5) | 0.0003 (5) |
C5 | 0.0335 (6) | 0.0231 (5) | 0.0343 (6) | 0.0006 (4) | 0.0004 (5) | −0.0012 (4) |
C6 | 0.0384 (7) | 0.0287 (6) | 0.0443 (8) | 0.0004 (5) | 0.0028 (6) | −0.0077 (5) |
C7 | 0.0375 (7) | 0.0363 (6) | 0.0460 (7) | −0.0018 (5) | 0.0032 (6) | −0.0002 (5) |
O1 | 0.0390 (5) | 0.0296 (5) | 0.0564 (6) | −0.0040 (4) | −0.0023 (4) | −0.0028 (4) |
O2 | 0.0485 (6) | 0.0379 (5) | 0.0550 (6) | 0.0090 (4) | 0.0188 (5) | 0.0089 (4) |
C1—C3i | 1.3787 (17) | C5—C6 | 1.5183 (17) |
C1—C2 | 1.3838 (17) | C5—H5 | 0.9800 |
C1—H1 | 0.9300 | C6—O1 | 1.4203 (18) |
C2—C3 | 1.3819 (17) | C6—H6A | 0.9700 |
C2—H2 | 0.9300 | C6—H6B | 0.9700 |
C3—C4 | 1.5078 (18) | C7—O2 | 1.4190 (18) |
C4—C5 | 1.5285 (18) | C7—H7A | 0.9700 |
C4—H4A | 0.9700 | C7—H7B | 0.9700 |
C4—H4B | 0.9700 | O1—H1A | 0.820 (16) |
C5—C7 | 1.513 (2) | O2—H2A | 0.820 (17) |
C3i—C1—C2 | 121.33 (11) | C7—C5—H5 | 107.8 |
C3i—C1—H1 | 119.3 | C6—C5—H5 | 107.8 |
C2—C1—H1 | 119.3 | C4—C5—H5 | 107.8 |
C3—C2—C1 | 121.04 (12) | O1—C6—C5 | 112.98 (10) |
C3—C2—H2 | 119.5 | O1—C6—H6A | 109.0 |
C1—C2—H2 | 119.5 | C5—C6—H6A | 109.0 |
C1i—C3—C2 | 117.63 (11) | O1—C6—H6B | 109.0 |
C1i—C3—C4 | 121.85 (11) | C5—C6—H6B | 109.0 |
C2—C3—C4 | 120.51 (11) | H6A—C6—H6B | 107.8 |
C3—C4—C5 | 113.62 (10) | O2—C7—C5 | 113.21 (11) |
C3—C4—H4A | 108.8 | O2—C7—H7A | 108.9 |
C5—C4—H4A | 108.8 | C5—C7—H7A | 108.9 |
C3—C4—H4B | 108.8 | O2—C7—H7B | 108.9 |
C5—C4—H4B | 108.8 | C5—C7—H7B | 108.9 |
H4A—C4—H4B | 107.7 | H7A—C7—H7B | 107.7 |
C7—C5—C6 | 110.72 (10) | C6—O1—H1A | 109.5 (12) |
C7—C5—C4 | 110.41 (10) | C7—O2—H2A | 109.5 (12) |
C6—C5—C4 | 112.03 (10) | ||
C3i—C1—C2—C3 | 0.2 (2) | C3—C4—C5—C6 | 165.14 (10) |
C1—C2—C3—C1i | −0.2 (2) | C7—C5—C6—O1 | 173.08 (10) |
C1—C2—C3—C4 | 178.72 (12) | C4—C5—C6—O1 | −63.19 (14) |
C1i—C3—C4—C5 | 111.75 (15) | C6—C5—C7—O2 | −65.22 (13) |
C2—C3—C4—C5 | −67.11 (15) | C4—C5—C7—O2 | 170.13 (9) |
C3—C4—C5—C7 | −70.96 (13) |
Symmetry code: (i) −x+2, −y+1, −z+1. |
D—H···A | D—H | H···A | D···A | D—H···A |
O1—H1A···O2ii | 0.820 (16) | 1.906 (17) | 2.7254 (17) | 177.4 (17) |
O2—H2A···O1iii | 0.820 (17) | 1.943 (17) | 2.7612 (17) | 175.5 (17) |
Symmetry codes: (ii) x+1/2, y, −z+3/2; (iii) −x+2, y−1/2, −z+3/2. |
Experimental details
Crystal data | |
Chemical formula | C14H22O4 |
Mr | 254.32 |
Crystal system, space group | Orthorhombic, Pbca |
Temperature (K) | 291 |
a, b, c (Å) | 9.939 (6), 8.803 (5), 15.366 (9) |
V (Å3) | 1344.5 (14) |
Z | 4 |
Radiation type | Mo Kα |
µ (mm−1) | 0.09 |
Crystal size (mm) | 0.30 × 0.24 × 0.22 |
Data collection | |
Diffractometer | Bruker SMART APEX CCD diffractometer |
Absorption correction | Multi-scan (SADABS; Bruker, 2000) |
Tmin, Tmax | 0.97, 0.98 |
No. of measured, independent and observed [I > 2σ(I)] reflections | 7571, 1636, 1215 |
Rint | 0.057 |
(sin θ/λ)max (Å−1) | 0.667 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.038, 0.115, 1.08 |
No. of reflections | 1636 |
No. of parameters | 88 |
No. of restraints | 2 |
H-atom treatment | H atoms treated by a mixture of independent and constrained refinement |
Δρmax, Δρmin (e Å−3) | 0.19, −0.17 |
Computer programs: SMART (Bruker, 2000), SAINT (Bruker, 2000), SHELXTL (Sheldrick, 2008).
D—H···A | D—H | H···A | D···A | D—H···A |
O1—H1A···O2i | 0.820 (16) | 1.906 (17) | 2.7254 (17) | 177.4 (17) |
O2—H2A···O1ii | 0.820 (17) | 1.943 (17) | 2.7612 (17) | 175.5 (17) |
Symmetry codes: (i) x+1/2, y, −z+3/2; (ii) −x+2, y−1/2, −z+3/2. |
Acknowledgements
The authors are grateful to Jiangsu Polytechnic University, the Natural Science Foundation of China (No. 20872051) and the Key Laboratory of Fine Petrochemical Engineering of Jiangsu Province (KF0503) for finanical support.
References
Bruker (2000). SMART, SAINT and SADABS. Bruker AXS Inc. Madison, Wisconsin, USA. Google Scholar
Sheldrick, G. M. (2008). Acta Cryst. A64, 112–122. Web of Science CrossRef CAS IUCr Journals Google Scholar
Xi, H., Gao, Y., Sun, X., Meng, Q. & Jiang, Y. (2008). Acta Cryst. E64, o1853. Web of Science CSD CrossRef IUCr Journals Google Scholar
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Reduction is a fundamental transformation in organic synthesis. Lithium aluminium hydride is used in organic synthesis as a powerful reducing agent.
The title molecule has a crystallographic inversion center located at the middle of the benzene ring. The trans-arrangement of two 1,3-dihydroxyisopropyl groups in the title compound was verified by X-ray crystallographic studies (Fig.1). The torsion angle C3—C4—C5—C6 is 165.14 (10) ° and the torsion angle of C3-C4-C5- C7 is -70.96 (13).