In the title compound, C23H48O2, one of the hydroxy groups adopts a gauche conformation with respect to the hydrocarbon skeleton, whereas the other hydroxy group adopts a trans conformation. The molecules form a layer structure similar to that found in the smectic A phase of liquid crystals. Inter- and intralayer hydrogen bonds are formed in the crystal. These features are similar to those of the homologues with an odd number of C atoms. The calculated density, however, deviates from that predicted by a relation between the density and the number of C atoms in alkane-α,ω-diols with an odd number of C atoms.
Supporting information
CCDC reference: 176029
Key indicators
- Single-crystal X-ray study
- T = 296 K
- Mean (C-C) = 0.003 Å
- R factor = 0.044
- wR factor = 0.192
- Data-to-parameter ratio = 10.7
checkCIF results
No syntax errors found
Structure: I
------------
ADDSYM reports no extra symmetry
General Notes
REFLT_03
From the CIF: _diffrn_reflns_theta_max 70.60
From the CIF: _reflns_number_total 2538
Count of symmetry unique reflns 2653
Completeness (_total/calc) 95.67%
TEST3: Check Friedels for noncentro structure
Estimate of Friedel pairs measured 0
Fraction of Friedel pairs measured 0.000
Are heavy atom types Z>Si present no
Please check that the estimate of the number of Friedel pairs is
correct. If it is not, please give the correct count in the
_publ_section_exptl_refinement section of the submitted CIF.
The title compound was synthesized as described previously (Ogawa & Nakamura,
1999). The diacid was obtained from short-chain diacids by a ketene
dimerization synthesis (Blomquist et al., 1952) and was converted to
the methyl ester by conventional procedures. The pure compound was obtained
through fractional distillation and recrystallization, and the purity was
99.9% or higher. The single-crystal used for the analysis was grown by slow
evaporation from a solution containing a mixture of methanol, ethyl acetate
and n-heptane (1:1:1).
The measured fraction (θmax= 70.6°) of 0.952 is relatively low, which is due
to the blind region of χ-90 setting. The absolute structure was tentatively
assigned. The methylene-H atoms were located at idealized positions, and were
allowed to ride on the parent C atoms (C—H = 0.95 Å). The hydroxy-H atoms
were located from a difference Fourier map, and were allowed to refine
isotropically for the final refinements [O—H = 0.75 (3) and 0.82 (3) Å]. The
H-atom isotropic displacement parameters were set to be 1.2Ueq of the
parent atom.
Data collection: MSC/AFC Diffractometer Control Software
(Molecular Structure Corporation, 1992); cell refinement: MSC/AFC Diffractometer Control Software; data reduction: TEXSAN (Molecular Structure Corporation, 2000); program(s) used to solve structure: SAPI91 (Fan, 1991); program(s) used to refine structure: TEXSAN; software used to prepare material for publication: TEXSAN.
Crystal data top
C23H48O2 | Dx = 1.031 Mg m−3 |
Mr = 356.61 | Melting point: 380.65 K |
Orthorhombic, P212121 | Cu Kα radiation, λ = 1.5418 Å |
Hall symbol: P 2ac 2ab | Cell parameters from 19 reflections |
a = 7.230 (6) Å | θ = 9.8–13.3° |
b = 63.045 (5) Å | µ = 0.47 mm−1 |
c = 5.041 (4) Å | T = 296 K |
V = 2298 (2) Å3 | Plate, colorless |
Z = 4 | 0.60 × 0.30 × 0.03 mm |
F(000) = 808.00 | |
Data collection top
Rigaku AFC-5R diffractometer | Rint = 0.009 |
ω scans | θmax = 70.6° |
Absorption correction: ψ scan (North et al., 1968) | h = −2→8 |
Tmin = 0.851, Tmax = 0.986 | k = 0→77 |
4062 measured reflections | l = −1→6 |
2538 independent reflections | 3 standard reflections every 150 reflections |
1692 reflections with F2 > 2.0σ(F2) | intensity decay: 3.3% |
Refinement top
Refinement on F2 | w = 1/[σ2(Fo2) + {0.09[Max(Fo2,0) + 2Fc2]/3}2] |
R[F2 > 2σ(F2)] = 0.044 | (Δ/σ)max < 0.001 |
wR(F2) = 0.192 | Δρmax = 0.25 e Å−3 |
S = 1.41 | Δρmin = −0.20 e Å−3 |
2491 reflections | Extinction correction: Zachariasen (1967) type 2 Gaussian isotropic |
233 parameters | Extinction coefficient: 0.047 (7) |
H atoms treated by a mixture of independent and constrained refinement | |
Crystal data top
C23H48O2 | V = 2298 (2) Å3 |
Mr = 356.61 | Z = 4 |
Orthorhombic, P212121 | Cu Kα radiation |
a = 7.230 (6) Å | µ = 0.47 mm−1 |
b = 63.045 (5) Å | T = 296 K |
c = 5.041 (4) Å | 0.60 × 0.30 × 0.03 mm |
Data collection top
Rigaku AFC-5R diffractometer | 1692 reflections with F2 > 2.0σ(F2) |
Absorption correction: ψ scan (North et al., 1968) | Rint = 0.009 |
Tmin = 0.851, Tmax = 0.986 | 3 standard reflections every 150 reflections |
4062 measured reflections | intensity decay: 3.3% |
2538 independent reflections | |
Refinement top
R[F2 > 2σ(F2)] = 0.044 | 233 parameters |
wR(F2) = 0.192 | H atoms treated by a mixture of independent and constrained refinement |
S = 1.41 | Δρmax = 0.25 e Å−3 |
2491 reflections | Δρmin = −0.20 e Å−3 |
Special details top
Refinement. Refinement using reflections with F2 > -3.0 σ(F2). The
weighted R-factor (wR) and goodness of fit (S) are based
on F2. R-factor (gt) are based on F. The threshold
expression of F2 > 2.0 σ(F2) is used only for calculating
R-factor (gt). |
Fractional atomic coordinates and isotropic or equivalent isotropic displacement parameters (Å2) top | x | y | z | Uiso*/Ueq | |
O1 | 0.5594 (3) | 0.26634 (2) | 0.1396 (4) | 0.0634 (5) | |
O2 | 0.5611 (3) | 0.72932 (2) | 0.5722 (5) | 0.0723 (6) | |
C1 | 0.5020 (5) | 0.26853 (3) | 0.4081 (6) | 0.0645 (9) | |
C2 | 0.5571 (5) | 0.28954 (3) | 0.5269 (6) | 0.0591 (7) | |
C3 | 0.4678 (4) | 0.30871 (3) | 0.3965 (5) | 0.0496 (6) | |
C4 | 0.5407 (4) | 0.32939 (3) | 0.5116 (5) | 0.0492 (6) | |
C5 | 0.4584 (4) | 0.34919 (3) | 0.3868 (5) | 0.0476 (6) | |
C6 | 0.5383 (4) | 0.36961 (3) | 0.4993 (5) | 0.0482 (6) | |
C7 | 0.4578 (4) | 0.38961 (3) | 0.3753 (5) | 0.0480 (6) | |
C8 | 0.5395 (4) | 0.40988 (3) | 0.4896 (5) | 0.0482 (6) | |
C9 | 0.4584 (4) | 0.42998 (3) | 0.3685 (6) | 0.0479 (6) | |
C10 | 0.5400 (4) | 0.45016 (3) | 0.4843 (6) | 0.0482 (6) | |
C11 | 0.4598 (4) | 0.47035 (3) | 0.3660 (5) | 0.0473 (6) | |
C12 | 0.5404 (3) | 0.49054 (3) | 0.4819 (5) | 0.0478 (6) | |
C13 | 0.4594 (3) | 0.51073 (3) | 0.3648 (5) | 0.0477 (6) | |
C14 | 0.5403 (4) | 0.53087 (3) | 0.4819 (6) | 0.0485 (6) | |
C15 | 0.4592 (4) | 0.55112 (3) | 0.3662 (6) | 0.0478 (6) | |
C16 | 0.5401 (4) | 0.57121 (3) | 0.4862 (6) | 0.0486 (6) | |
C17 | 0.4590 (4) | 0.59148 (3) | 0.3711 (5) | 0.0476 (6) | |
C18 | 0.5389 (4) | 0.61155 (3) | 0.4932 (5) | 0.0484 (6) | |
C19 | 0.4573 (4) | 0.63195 (3) | 0.3821 (5) | 0.0483 (6) | |
C20 | 0.5390 (4) | 0.65180 (3) | 0.5079 (6) | 0.0495 (7) | |
C21 | 0.4588 (4) | 0.67246 (3) | 0.4024 (5) | 0.0492 (6) | |
C22 | 0.5445 (4) | 0.69177 (3) | 0.5339 (6) | 0.0522 (7) | |
C23 | 0.4687 (4) | 0.71259 (3) | 0.4350 (6) | 0.0563 (7) | |
H1a | 0.3711 | 0.2673 | 0.4154 | 0.0774* | |
H1b | 0.5565 | 0.2575 | 0.5096 | 0.0774* | |
H1o | 0.672 (5) | 0.2681 (5) | 0.138 (7) | 0.0760* | |
H2a | 0.5235 | 0.2895 | 0.7091 | 0.0709* | |
H2b | 0.6875 | 0.2909 | 0.5116 | 0.0709* | |
H2o | 0.522 (5) | 0.7395 (5) | 0.519 (8) | 0.0868* | |
H3a | 0.4934 | 0.3084 | 0.2118 | 0.0595* | |
H3b | 0.3379 | 0.3081 | 0.4237 | 0.0595* | |
H4a | 0.5137 | 0.3296 | 0.6959 | 0.0590* | |
H4b | 0.6709 | 0.3297 | 0.4866 | 0.0590* | |
H5a | 0.4819 | 0.3488 | 0.2014 | 0.0571* | |
H5b | 0.3287 | 0.3491 | 0.4167 | 0.0571* | |
H6a | 0.5143 | 0.3699 | 0.6845 | 0.0579* | |
H6b | 0.6681 | 0.3696 | 0.4700 | 0.0579* | |
H7a | 0.4816 | 0.3893 | 0.1900 | 0.0576* | |
H7b | 0.3281 | 0.3897 | 0.4049 | 0.0576* | |
H8a | 0.5168 | 0.4101 | 0.6752 | 0.0578* | |
H8b | 0.6691 | 0.4098 | 0.4585 | 0.0578* | |
H9a | 0.4816 | 0.4298 | 0.1830 | 0.0575* | |
H9b | 0.3287 | 0.4300 | 0.3989 | 0.0575* | |
H10a | 0.5172 | 0.4502 | 0.6699 | 0.0578* | |
H10b | 0.6696 | 0.4501 | 0.4534 | 0.0578* | |
H11a | 0.4830 | 0.4703 | 0.1806 | 0.0567* | |
H11b | 0.3302 | 0.4704 | 0.3964 | 0.0567* | |
H12a | 0.5179 | 0.4906 | 0.6676 | 0.0574* | |
H12b | 0.6700 | 0.4905 | 0.4506 | 0.0574* | |
H13a | 0.4822 | 0.5107 | 0.1792 | 0.0572* | |
H13b | 0.3298 | 0.5107 | 0.3958 | 0.0572* | |
H14a | 0.5179 | 0.5308 | 0.6676 | 0.0582* | |
H14b | 0.6698 | 0.5309 | 0.4503 | 0.0582* | |
H15a | 0.4824 | 0.5512 | 0.1807 | 0.0573* | |
H15b | 0.3296 | 0.5511 | 0.3966 | 0.0573* | |
H16a | 0.5171 | 0.5711 | 0.6717 | 0.0583* | |
H16b | 0.6697 | 0.5712 | 0.4555 | 0.0583* | |
H17a | 0.4831 | 0.5917 | 0.1858 | 0.0571* | |
H17b | 0.3293 | 0.5914 | 0.4003 | 0.0571* | |
H18a | 0.5162 | 0.6112 | 0.6787 | 0.0581* | |
H18b | 0.6684 | 0.6117 | 0.4621 | 0.0581* | |
H19a | 0.4803 | 0.6324 | 0.1966 | 0.0580* | |
H19b | 0.3277 | 0.6319 | 0.4128 | 0.0580* | |
H20a | 0.5170 | 0.6512 | 0.6935 | 0.0594* | |
H20b | 0.6685 | 0.6518 | 0.4758 | 0.0594* | |
H21a | 0.4809 | 0.6732 | 0.2168 | 0.0591* | |
H21b | 0.3293 | 0.6726 | 0.4345 | 0.0591* | |
H22a | 0.5224 | 0.6909 | 0.7193 | 0.0627* | |
H22b | 0.6739 | 0.6915 | 0.5016 | 0.0627* | |
H23a | 0.3396 | 0.7133 | 0.4690 | 0.0675* | |
H23b | 0.4901 | 0.7138 | 0.2498 | 0.0675* | |
Atomic displacement parameters (Å2) top | U11 | U22 | U33 | U12 | U13 | U23 |
O1 | 0.089 (1) | 0.0372 (7) | 0.064 (1) | −0.0041 (9) | 0.005 (1) | −0.0043 (8) |
O2 | 0.091 (1) | 0.0302 (7) | 0.096 (2) | 0.0020 (9) | −0.022 (2) | −0.0011 (8) |
C1 | 0.095 (2) | 0.034 (1) | 0.065 (2) | −0.004 (1) | 0.013 (2) | 0.010 (1) |
C2 | 0.087 (2) | 0.036 (1) | 0.054 (1) | 0.002 (1) | −0.002 (2) | 0.0023 (10) |
C3 | 0.061 (2) | 0.0339 (10) | 0.054 (1) | 0.001 (1) | 0.003 (2) | −0.0012 (9) |
C4 | 0.057 (2) | 0.0341 (10) | 0.056 (1) | 0.000 (1) | −0.002 (2) | −0.0029 (9) |
C5 | 0.053 (1) | 0.0328 (9) | 0.057 (1) | 0.0002 (10) | 0.001 (2) | −0.0024 (10) |
C6 | 0.054 (1) | 0.0324 (10) | 0.059 (1) | −0.0019 (10) | 0.000 (2) | −0.0046 (9) |
C7 | 0.051 (1) | 0.0323 (9) | 0.060 (1) | −0.0015 (10) | 0.000 (2) | −0.0011 (10) |
C8 | 0.053 (1) | 0.0317 (10) | 0.060 (1) | −0.0015 (10) | −0.003 (2) | −0.0016 (9) |
C9 | 0.052 (1) | 0.0313 (9) | 0.060 (1) | −0.0003 (10) | −0.001 (2) | −0.0015 (9) |
C10 | 0.052 (1) | 0.0312 (10) | 0.062 (1) | 0.000 (1) | −0.002 (2) | −0.0022 (9) |
C11 | 0.050 (1) | 0.0320 (10) | 0.060 (1) | 0.0004 (10) | −0.003 (2) | −0.0010 (10) |
C12 | 0.052 (1) | 0.0317 (10) | 0.060 (1) | −0.001 (1) | 0.000 (1) | 0.0002 (9) |
C13 | 0.051 (1) | 0.0309 (9) | 0.061 (1) | 0.000 (1) | −0.002 (1) | −0.0011 (10) |
C14 | 0.053 (1) | 0.0310 (10) | 0.062 (1) | −0.001 (1) | 0.000 (2) | 0.0003 (9) |
C15 | 0.052 (1) | 0.0313 (9) | 0.060 (1) | 0.0014 (10) | −0.002 (2) | −0.0013 (9) |
C16 | 0.053 (1) | 0.0300 (10) | 0.063 (1) | −0.0007 (10) | −0.002 (2) | −0.0003 (9) |
C17 | 0.051 (1) | 0.0314 (10) | 0.060 (1) | 0.0006 (9) | −0.003 (2) | 0.0001 (9) |
C18 | 0.054 (1) | 0.0304 (10) | 0.061 (1) | −0.0016 (10) | −0.002 (2) | 0.0000 (9) |
C19 | 0.053 (1) | 0.0312 (9) | 0.060 (1) | 0.0020 (10) | −0.002 (2) | 0.0008 (10) |
C20 | 0.054 (1) | 0.0317 (10) | 0.063 (1) | −0.001 (1) | −0.004 (2) | 0.0008 (9) |
C21 | 0.055 (1) | 0.0328 (9) | 0.060 (1) | 0.003 (1) | −0.003 (2) | 0.0026 (10) |
C22 | 0.060 (2) | 0.0304 (10) | 0.067 (1) | −0.001 (1) | −0.002 (2) | 0.0022 (9) |
C23 | 0.065 (2) | 0.0309 (9) | 0.073 (2) | 0.003 (1) | −0.001 (2) | 0.0012 (10) |
Geometric parameters (Å, º) top
O1—C1 | 1.423 (4) | C6—H6a | 0.95 |
O2—C23 | 1.427 (3) | C6—H6b | 0.95 |
C1—C2 | 1.507 (3) | C7—H7a | 0.95 |
C2—C3 | 1.520 (3) | C7—H7b | 0.95 |
C3—C4 | 1.521 (3) | C8—H8a | 0.95 |
C4—C5 | 1.519 (3) | C8—H8b | 0.95 |
C5—C6 | 1.521 (3) | C9—H9a | 0.95 |
C6—C7 | 1.523 (3) | C9—H9b | 0.95 |
C7—C8 | 1.521 (3) | C10—H10a | 0.95 |
C8—C9 | 1.524 (3) | C10—H10b | 0.95 |
C9—C10 | 1.519 (3) | C11—H11a | 0.95 |
C10—C11 | 1.520 (3) | C11—H11b | 0.95 |
C11—C12 | 1.517 (3) | C12—H12a | 0.95 |
C12—C13 | 1.520 (3) | C12—H12b | 0.95 |
C13—C14 | 1.518 (3) | C13—H13a | 0.95 |
C14—C15 | 1.521 (3) | C13—H13b | 0.95 |
C15—C16 | 1.521 (3) | C14—H14a | 0.95 |
C16—C17 | 1.521 (3) | C14—H14b | 0.95 |
C17—C18 | 1.521 (3) | C15—H15a | 0.95 |
C18—C19 | 1.522 (3) | C15—H15b | 0.95 |
C19—C20 | 1.522 (3) | C16—H16a | 0.95 |
C20—C21 | 1.522 (3) | C16—H16b | 0.95 |
C21—C22 | 1.519 (3) | C17—H17a | 0.95 |
C22—C23 | 1.507 (3) | C17—H17b | 0.95 |
O1—H1o | 0.82 (3) | C18—H18a | 0.95 |
O2—H2o | 0.75 (3) | C18—H18b | 0.95 |
C1—H1a | 0.95 | C19—H19a | 0.95 |
C1—H1b | 0.95 | C19—H19b | 0.95 |
C2—H2a | 0.95 | C20—H20a | 0.95 |
C2—H2b | 0.95 | C20—H20b | 0.95 |
C3—H3a | 0.95 | C21—H21a | 0.95 |
C3—H3b | 0.95 | C21—H21b | 0.95 |
C4—H4a | 0.95 | C22—H22a | 0.95 |
C4—H4b | 0.95 | C22—H22b | 0.95 |
C5—H5a | 0.95 | C23—H23a | 0.95 |
C5—H5b | 0.95 | C23—H23b | 0.95 |
| | | |
O1—C1—C2 | 112.7 (2) | C9—C10—H10a | 108.4 |
C1—C2—C3 | 114.5 (2) | C9—C10—H10b | 108.4 |
C2—C3—C4 | 111.7 (2) | C11—C10—H10a | 108.4 |
C3—C4—C5 | 114.2 (2) | C11—C10—H10b | 108.4 |
C4—C5—C6 | 113.1 (2) | H10a—C10—H10b | 109.5 |
C5—C6—C7 | 113.7 (2) | C10—C11—H11a | 108.4 |
C6—C7—C8 | 113.1 (2) | C10—C11—H11b | 108.4 |
C7—C8—C9 | 113.4 (2) | C12—C11—H11a | 108.4 |
C8—C9—C10 | 113.1 (2) | C12—C11—H11b | 108.4 |
C9—C10—C11 | 113.7 (2) | H11a—C11—H11b | 109.5 |
C10—C11—C12 | 113.9 (2) | C11—C12—H12a | 108.4 |
C11—C12—C13 | 113.9 (2) | C11—C12—H12b | 108.4 |
C12—C13—C14 | 113.6 (2) | C13—C12—H12a | 108.4 |
C13—C14—C15 | 113.9 (2) | C13—C12—H12b | 108.4 |
C14—C15—C16 | 113.5 (2) | H12a—C12—H12b | 109.5 |
C15—C16—C17 | 113.6 (2) | C12—C13—H13a | 108.4 |
C16—C17—C18 | 113.5 (2) | C12—C13—H13b | 108.4 |
C17—C18—C19 | 114.0 (2) | C14—C13—H13a | 108.4 |
C18—C19—C20 | 113.0 (2) | C14—C13—H13b | 108.4 |
C19—C20—C21 | 114.2 (2) | H13a—C13—H13b | 109.5 |
C20—C21—C22 | 112.2 (2) | C13—C14—H14a | 108.4 |
C21—C22—C23 | 113.9 (2) | C13—C14—H14b | 108.4 |
O2—C23—C22 | 108.2 (2) | C15—C14—H14a | 108.4 |
C1—O1—H1o | 106 (2) | C15—C14—H14b | 108.4 |
C23—O2—H2o | 106 (2) | H14a—C14—H14b | 109.5 |
O1—C1—H1a | 108.7 | C14—C15—H15a | 108.5 |
O1—C1—H1b | 108.7 | C14—C15—H15b | 108.5 |
C2—C1—H1a | 108.7 | C16—C15—H15a | 108.5 |
C2—C1—H1b | 108.7 | C16—C15—H15b | 108.5 |
H1a—C1—H1b | 109.5 | H15a—C15—H15b | 109.5 |
C1—C2—H2a | 108.2 | C15—C16—H16a | 108.4 |
C1—C2—H2b | 108.2 | C15—C16—H16b | 108.4 |
C3—C2—H2a | 108.2 | C17—C16—H16a | 108.4 |
C3—C2—H2b | 108.2 | C17—C16—H16b | 108.4 |
H2a—C2—H2b | 109.5 | H16a—C16—H16b | 109.5 |
C2—C3—H3a | 108.9 | C16—C17—H17a | 108.5 |
C2—C3—H3b | 108.9 | C16—C17—H17b | 108.5 |
C4—C3—H3a | 108.9 | C18—C17—H17a | 108.5 |
C4—C3—H3b | 108.9 | C18—C17—H17b | 108.5 |
H3a—C3—H3b | 109.5 | H17a—C17—H17b | 109.5 |
C3—C4—H4a | 108.3 | C17—C18—H18a | 108.3 |
C3—C4—H4b | 108.3 | C17—C18—H18b | 108.3 |
C5—C4—H4a | 108.3 | C19—C18—H18a | 108.3 |
C5—C4—H4b | 108.3 | C19—C18—H18b | 108.3 |
H4a—C4—H4b | 109.5 | H18a—C18—H18b | 109.5 |
C4—C5—H5a | 108.6 | C18—C19—H19a | 108.6 |
C4—C5—H5b | 108.6 | C18—C19—H19b | 108.6 |
C6—C5—H5a | 108.6 | C20—C19—H19a | 108.6 |
C6—C5—H5b | 108.6 | C20—C19—H19b | 108.6 |
H5a—C5—H5b | 109.5 | H19a—C19—H19b | 109.5 |
C5—C6—H6a | 108.4 | C19—C20—H20a | 108.3 |
C5—C6—H6b | 108.4 | C19—C20—H20b | 108.3 |
C7—C6—H6a | 108.4 | C21—C20—H20a | 108.3 |
C7—C6—H6b | 108.4 | C21—C20—H20b | 108.3 |
H6a—C6—H6b | 109.5 | H20a—C20—H20b | 109.5 |
C6—C7—H7a | 108.6 | C20—C21—H21a | 108.8 |
C6—C7—H7b | 108.6 | C20—C21—H21b | 108.8 |
C8—C7—H7a | 108.6 | C22—C21—H21a | 108.8 |
C8—C7—H7b | 108.6 | C22—C21—H21b | 108.8 |
H7a—C7—H7b | 109.5 | H21a—C21—H21b | 109.5 |
C7—C8—H8a | 108.5 | C21—C22—H22a | 108.3 |
C7—C8—H8b | 108.5 | C21—C22—H22b | 108.4 |
C9—C8—H8a | 108.5 | C23—C22—H22a | 108.3 |
C9—C8—H8b | 108.5 | C23—C22—H22b | 108.3 |
H8a—C8—H8b | 109.5 | H22a—C22—H22b | 109.5 |
C8—C9—H9a | 108.6 | O2—C23—H23a | 109.8 |
C8—C9—H9b | 108.5 | O2—C23—H23b | 109.8 |
C10—C9—H9a | 108.6 | C22—C23—H23a | 109.8 |
C10—C9—H9b | 108.5 | C22—C23—H23b | 109.8 |
H9a—C9—H9b | 109.5 | H23a—C23—H23b | 109.5 |
| | | |
O1—C1—C2—C3 | 63.9 (4) | C11—C12—C13—C14 | 179.9 (2) |
O2—C23—C22—C21 | −179.6 (2) | C12—C13—C14—C15 | −179.8 (2) |
C1—C2—C3—C4 | −175.6 (2) | C13—C14—C15—C16 | 179.6 (2) |
C2—C3—C4—C5 | 179.2 (2) | C14—C15—C16—C17 | −179.9 (2) |
C3—C4—C5—C6 | −178.1 (2) | C15—C16—C17—C18 | 179.5 (2) |
C4—C5—C6—C7 | 179.7 (2) | C16—C17—C18—C19 | −179.3 (2) |
C5—C6—C7—C8 | −179.9 (2) | C17—C18—C19—C20 | 179.8 (2) |
C6—C7—C8—C9 | −179.4 (2) | C18—C19—C20—C21 | −179.5 (2) |
C7—C8—C9—C10 | 179.7 (2) | C19—C20—C21—C22 | 180.0 (2) |
C8—C9—C10—C11 | −179.8 (2) | C20—C21—C22—C23 | −180.0 (2) |
C9—C10—C11—C12 | 179.8 (2) | C20—C21—C22—C23 | −180.0 (2) |
C10—C11—C12—C13 | −179.6 (2) | | |
Hydrogen-bond geometry (Å, º) top
D—H···A | D—H | H···A | D···A | D—H···A |
O1—H1o···O2i | 0.82 (3) | 1.96 (3) | 2.778 (2) | 170 (3) |
O2—H2o···O1ii | 0.75 (3) | 1.96 (3) | 2.711 (2) | 174 (3) |
Symmetry codes: (i) −x+3/2, −y+1, z−1/2; (ii) −x+1, y+1/2, −z+1/2. |
Experimental details
Crystal data |
Chemical formula | C23H48O2 |
Mr | 356.61 |
Crystal system, space group | Orthorhombic, P212121 |
Temperature (K) | 296 |
a, b, c (Å) | 7.230 (6), 63.045 (5), 5.041 (4) |
V (Å3) | 2298 (2) |
Z | 4 |
Radiation type | Cu Kα |
µ (mm−1) | 0.47 |
Crystal size (mm) | 0.60 × 0.30 × 0.03 |
|
Data collection |
Diffractometer | Rigaku AFC-5R diffractometer |
Absorption correction | ψ scan (North et al., 1968) |
Tmin, Tmax | 0.851, 0.986 |
No. of measured, independent and observed [F2 > 2.0σ(F2)] reflections | 4062, 2538, 1692 |
Rint | 0.009 |
(sin θ/λ)max (Å−1) | 0.612 |
|
Refinement |
R[F2 > 2σ(F2)], wR(F2), S | 0.044, 0.192, 1.41 |
No. of reflections | 2491 |
No. of parameters | 233 |
No. of restraints | ? |
H-atom treatment | H atoms treated by a mixture of independent and constrained refinement |
Δρmax, Δρmin (e Å−3) | 0.25, −0.20 |
Selected geometric parameters (Å, º) topO1—C1 | 1.423 (4) | C11—C12 | 1.517 (3) |
O2—C23 | 1.427 (3) | C12—C13 | 1.520 (3) |
C1—C2 | 1.507 (3) | C13—C14 | 1.518 (3) |
C2—C3 | 1.520 (3) | C14—C15 | 1.521 (3) |
C3—C4 | 1.521 (3) | C15—C16 | 1.521 (3) |
C4—C5 | 1.519 (3) | C16—C17 | 1.521 (3) |
C5—C6 | 1.521 (3) | C17—C18 | 1.521 (3) |
C6—C7 | 1.523 (3) | C18—C19 | 1.522 (3) |
C7—C8 | 1.521 (3) | C19—C20 | 1.522 (3) |
C8—C9 | 1.524 (3) | C20—C21 | 1.522 (3) |
C9—C10 | 1.519 (3) | C21—C22 | 1.519 (3) |
C10—C11 | 1.520 (3) | C22—C23 | 1.507 (3) |
| | | |
O1—C1—C2—C3 | 63.9 (4) | O2—C23—C22—C21 | −179.6 (2) |
Hydrogen-bond geometry (Å, º) top
D—H···A | D—H | H···A | D···A | D—H···A |
O1—H1o···O2i | 0.82 (3) | 1.96 (3) | 2.778 (2) | 170 (3) |
O2—H2o···O1ii | 0.75 (3) | 1.96 (3) | 2.711 (2) | 174 (3) |
Symmetry codes: (i) −x+3/2, −y+1, z−1/2; (ii) −x+1, y+1/2, −z+1/2. |
Normal long-chain aliphatic compounds have been investigated recently as models for smectic liquid crystals. Phase-transition phenomena in alkane-α,ω-diols containing 13–24 C atoms have been studied (Ogawa & Nakamura, 1999). It was defined that alkane-α,ω-diols containing 13–24 C atoms, except for the diol containing 14 C atoms, had a rotator phase in which molecules were assured greater motional freedom, as well as that observed in liquid crystals. In addition, it was reported that the analogous compounds with two hydroxy groups at one or both chain ends had the smectic phase of liquid crystals (Hentrich et al., 1994). Therefore, the crystal data of alkane-α,ω-diols are important in order to explain of the phase-transition behavior.
The crystal structures of 11 alkane-α,ω-diols containing 10–19 and 21 C atoms have been investigated by Nakamura and co-workers: 1,10-decanediol (Nakamura & Sato, 1999a), 1,11-undecanediol (Nakamura, Setodoi & Ikeya, 1999), 1,12-dodecanediol (Nakamura & Setodoi, 1997), 1,13-tridecanediol (Nakamura, Tanihara & Takayama, 1997), 1,14-tetradecanediol (Nakamura & Sato, 1999b), 1,15-pentadecanediol (Nakamura, Uno, Watanabe et al., 2000), 1,16-hexadecanediol (Nakamura & Yamamoto, 1994), 1,17-heptadecanediol (Nakamura et al., 2001a), octadecane-1,18-diol (Nakamura & Watanabe, 2001), nonadecane-1,19-diol (Nakamura et al., 2001b) and 1,21-henicosanediol (Nakamura, Uno & Ogawa, 2000). The structures obtained divided into two groups, one series has an even number of C atoms and the other series has an odd number of C atoms. In this paper, the crystal structure of tricosane-1,23-diol, (I), is described and compared with the other alkane-α,ω-diols.
Fig. 1 shows the molecular structure of (I). The terminal torsion angles O1—C1—C2—C3 and O2—C23—C22—C21 are 63.9 (4) and -179.6 (2)°, respectively. This means that the former has a gauche conformation and the latter a trans conformation. Fig. 2 shows the projection of the crystal structure of (I) along the c axis. The long axis of molecules is normal to the ac plane, and the molecules form layers with a thickness of b/2. The packing is similar to that in the smectic A phase of liquid crystals. The molecules also form two different types of hydrogen bond, i.e. interlayer and intralayer. The donor–acceptor distances of the inter- and intralayer hydrogen bonds are 2.711 (2) and 2.778 (4) Å, respectively. These features are similar to those of other alkane-α,ω-diols with an odd number of C atoms.
The calculated densities of the odd-numbered alkane-α,ω-diols containing 11–21 C atoms were 1.050, 1.045, 1.041, 1.037, 1.034 and 1.029 Mg m-3, respectively. As the X-ray structure analyses were carried out at nearly the same temperature, the density of tricosane-1,23-diol was estimated to be less than 1.029 Mg m-3. However, it is 1.031 Mg m-3. This fact shows that it is far from the tendency to decrease slightly with increasing chain length in the odd-numbered alkane-α,ω-diols. This feature is in harmony with that observed in the relation between the crystal-rotator phase transition temperature (Tt) and number of C atoms in the compounds. The Tt of tricosane-1,23-diol is a little higher than the Tt predicted from the relation (Ogawa & Nakamura, 1999).