Supporting information
Crystallographic Information File (CIF) https://doi.org/10.1107/S1600536807028127/cv2250sup1.cif | |
Structure factor file (CIF format) https://doi.org/10.1107/S1600536807028127/cv2250Isup2.hkl |
CCDC reference: 654926
Compound (I) was prepared according to the method of Zhang et al. (2006). Single crystals suitable for X-ray diffraction analysis were obtained by slow evaporation of an ethanol-water (3:1 v/v) solution over a period of 5 d.
All H atoms were located in a difference Fourier map and constrained to ride on their parent atoms, with C—H distances in the range 0.96–0.98 Å, and with Uiso(H) = 1.2 Ueq(C) and 1.5 Ueq(methyl C) H atoms. The chloroethyl fragment (C17—C18—Cl1) was treated as disordered between two positions with occupancy factors 0.70 and 0.30, respectively.
In the title compound, (I) (Fig. 1), all bond lengths and angles are within normal ranges. The galactopyranoside ring adopts a chair conformation. All the substituents attached to the six-membered ring are in equatorial positions, assumed to be the most stable of all possible conformations due to the relatively low energy. There exist five intramolecular hydrogen bonds, forming five closed five-membered rings which contribute to the planarity of the substituents. In the crystal, the molecules are linked into chains along the a axis by C15—H15B···O5 and C18—H18B···O9 intermolecular hydrogen bonds.
For the crystal structure of 2,3,4,6-tetra-O-acetyl-2-chloroethyl-β-D-galactopyranoside, see: Zhang et al. (2006).
Data collection: SMART (Siemens, 1996); cell refinement: SMART; data reduction: SAINT (Siemens, 1996); program(s) used to solve structure: SHELXTL (Sheldrick, 1997); program(s) used to refine structure: SHELXTL; molecular graphics: PLATON (Spek, 2003); software used to prepare material for publication: SHELXTL and PARST95 (Nardelli, 1995).
Fig. 1. The molecular structure of (I) showing 50% probability displacement ellipsoids and the atom numbering scheme. |
C18H27ClO11 | Dx = 1.332 Mg m−3 |
Mr = 454.85 | Mo Kα radiation, λ = 0.71073 Å |
Orthorhombic, P212121 | Cell parameters from 3522 reflections |
a = 7.5382 (13) Å | θ = 2.4–21.1° |
b = 14.195 (3) Å | µ = 0.22 mm−1 |
c = 21.204 (4) Å | T = 293 K |
V = 2269.0 (8) Å3 | Column, colourless |
Z = 4 | 0.50 × 0.22 × 0.16 mm |
F(000) = 960 |
Bruker SMART CCD area-detector diffractometer | 4018 independent reflections |
Radiation source: fine-focus sealed tube | 3116 reflections with I > 2σ(I) |
Graphite monochromator | Rint = 0.024 |
φ and ω scans | θmax = 25.1°, θmin = 1.7° |
Absorption correction: multi-scan (SADABS; Sheldrick, 1996) | h = −8→8 |
Tmin = 0.932, Tmax = 0.956 | k = −16→8 |
11900 measured reflections | l = −25→25 |
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)] = 0.048 | H-atom parameters constrained |
wR(F2) = 0.140 | w = 1/[σ2(Fo2) + (0.0807P)2 + 0.2077P] where P = (Fo2 + 2Fc2)/3 |
S = 1.04 | (Δ/σ)max = 0.002 |
4018 reflections | Δρmax = 0.24 e Å−3 |
282 parameters | Δρmin = −0.14 e Å−3 |
6 restraints | Absolute structure: Flack (1983), 1705 Friedel pairs |
Primary atom site location: structure-invariant direct methods | Absolute structure parameter: −0.04 (15) |
C18H27ClO11 | V = 2269.0 (8) Å3 |
Mr = 454.85 | Z = 4 |
Orthorhombic, P212121 | Mo Kα radiation |
a = 7.5382 (13) Å | µ = 0.22 mm−1 |
b = 14.195 (3) Å | T = 293 K |
c = 21.204 (4) Å | 0.50 × 0.22 × 0.16 mm |
Bruker SMART CCD area-detector diffractometer | 4018 independent reflections |
Absorption correction: multi-scan (SADABS; Sheldrick, 1996) | 3116 reflections with I > 2σ(I) |
Tmin = 0.932, Tmax = 0.956 | Rint = 0.024 |
11900 measured reflections |
R[F2 > 2σ(F2)] = 0.048 | H-atom parameters constrained |
wR(F2) = 0.140 | Δρmax = 0.24 e Å−3 |
S = 1.04 | Δρmin = −0.14 e Å−3 |
4018 reflections | Absolute structure: Flack (1983), 1705 Friedel pairs |
282 parameters | Absolute structure parameter: −0.04 (15) |
6 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 | Occ. (<1) | |
C1 | 0.1755 (4) | 0.9731 (2) | 0.01052 (13) | 0.0561 (7) | |
H1A | 0.2538 | 1.0274 | 0.0167 | 0.067* | |
C2 | 0.0221 (4) | 0.99883 (18) | −0.03236 (13) | 0.0533 (6) | |
H2A | −0.0508 | 0.9431 | −0.0409 | 0.064* | |
C3 | −0.0896 (4) | 1.07522 (18) | −0.00178 (13) | 0.0510 (6) | |
H3A | −0.0239 | 1.1348 | −0.0008 | 0.061* | |
C4 | −0.1426 (4) | 1.04628 (18) | 0.06463 (13) | 0.0528 (7) | |
H4A | −0.2280 | 0.9943 | 0.0626 | 0.063* | |
C5 | 0.0189 (4) | 1.01584 (19) | 0.10235 (13) | 0.0568 (7) | |
H5A | 0.1002 | 1.0693 | 0.1064 | 0.068* | |
C6 | −0.0264 (5) | 0.9797 (2) | 0.16670 (14) | 0.0681 (8) | |
H6A | 0.0792 | 0.9560 | 0.1874 | 0.082* | |
H6B | −0.0755 | 1.0301 | 0.1923 | 0.082* | |
C7 | −0.2576 (6) | 0.8854 (3) | 0.20918 (16) | 0.0835 (10) | |
C8 | −0.3918 (7) | 0.8146 (3) | 0.1925 (2) | 0.1123 (16) | |
H8A | −0.4642 | 0.8014 | 0.2287 | 0.169* | |
H8B | −0.3340 | 0.7578 | 0.1790 | 0.169* | |
H8C | −0.4648 | 0.8383 | 0.1590 | 0.169* | |
C9 | −0.3865 (5) | 1.1182 (3) | 0.11907 (16) | 0.0731 (9) | |
C10 | −0.4441 (6) | 1.2082 (3) | 0.14768 (19) | 0.0982 (12) | |
H10A | −0.5614 | 1.2011 | 0.1647 | 0.147* | |
H10B | −0.4447 | 1.2566 | 0.1161 | 0.147* | |
H10C | −0.3636 | 1.2253 | 0.1808 | 0.147* | |
C11 | −0.3081 (4) | 1.1719 (2) | −0.05358 (14) | 0.0629 (8) | |
C12 | −0.4690 (5) | 1.1648 (3) | −0.09423 (18) | 0.0873 (11) | |
H12A | −0.5117 | 1.2269 | −0.1038 | 0.131* | |
H12B | −0.5595 | 1.1303 | −0.0724 | 0.131* | |
H12C | −0.4394 | 1.1328 | −0.1327 | 0.131* | |
C13 | 0.0893 (4) | 0.9785 (2) | −0.14137 (14) | 0.0649 (8) | |
C14 | 0.1764 (6) | 1.0232 (3) | −0.19647 (15) | 0.0890 (11) | |
H14A | 0.1723 | 0.9810 | −0.2318 | 0.133* | |
H14B | 0.2977 | 1.0371 | −0.1863 | 0.133* | |
H14C | 0.1155 | 1.0805 | −0.2069 | 0.133* | |
C15 | 0.4186 (5) | 0.8690 (3) | 0.02034 (18) | 0.0858 (11) | |
H15A | 0.3777 | 0.8406 | 0.0593 | 0.103* | |
H15B | 0.4904 | 0.9234 | 0.0311 | 0.103* | |
C16 | 0.5271 (5) | 0.8010 (3) | −0.0143 (2) | 0.0939 (12) | |
H16A | 0.6003 | 0.7662 | 0.0153 | 0.113* | |
H16B | 0.4502 | 0.7564 | −0.0356 | 0.113* | |
C17 | 0.5595 (11) | 0.8630 (5) | −0.1191 (2) | 0.117 (2) | 0.70 |
H17A | 0.5916 | 0.9248 | −0.1349 | 0.140* | 0.70 |
H17B | 0.4313 | 0.8569 | −0.1185 | 0.140* | 0.70 |
C18 | 0.6461 (7) | 0.7849 (4) | −0.1571 (2) | 0.106 (2) | 0.70 |
H18A | 0.6190 | 0.7244 | −0.1381 | 0.127* | 0.70 |
H18B | 0.7739 | 0.7930 | −0.1566 | 0.127* | 0.70 |
Cl1 | 0.5667 (5) | 0.7865 (3) | −0.23801 (13) | 0.1242 (10) | 0.70 |
C17' | 0.556 (3) | 0.8083 (14) | −0.1155 (5) | 0.125 (4)* | 0.30 |
H17C | 0.4302 | 0.8229 | −0.1149 | 0.150* | 0.30 |
H17D | 0.5673 | 0.7403 | −0.1149 | 0.150* | 0.30 |
C18' | 0.634 (2) | 0.8447 (14) | −0.1780 (5) | 0.125 (4)* | 0.30 |
H18C | 0.7555 | 0.8237 | −0.1822 | 0.150* | 0.30 |
H18D | 0.6327 | 0.9130 | −0.1782 | 0.150* | 0.30 |
Cl1' | 0.5049 (10) | 0.8012 (7) | −0.2426 (4) | 0.109 (3)* | 0.30 |
O1 | 0.1055 (3) | 0.94203 (13) | 0.06919 (9) | 0.0574 (5) | |
O2 | −0.1540 (3) | 0.90570 (15) | 0.15955 (9) | 0.0677 (6) | |
O3 | −0.2416 (5) | 0.9234 (2) | 0.25869 (13) | 0.1206 (11) | |
O4 | −0.2231 (3) | 1.12583 (13) | 0.09468 (9) | 0.0610 (5) | |
O5 | −0.4716 (4) | 1.0471 (2) | 0.11726 (17) | 0.1170 (11) | |
O6 | −0.2470 (3) | 1.08482 (13) | −0.03989 (9) | 0.0584 (5) | |
O7 | −0.2418 (4) | 1.24259 (16) | −0.03553 (13) | 0.0889 (8) | |
O8 | 0.0921 (3) | 1.03612 (13) | −0.09056 (9) | 0.0583 (5) | |
O9 | 0.0267 (4) | 0.90214 (19) | −0.14093 (12) | 0.0970 (9) | |
O10 | 0.2679 (3) | 0.89899 (14) | −0.01624 (10) | 0.0624 (5) | |
O11 | 0.6350 (4) | 0.8454 (3) | −0.05836 (16) | 0.1156 (10) |
U11 | U22 | U33 | U12 | U13 | U23 | |
C1 | 0.0485 (15) | 0.0545 (16) | 0.0653 (16) | −0.0021 (14) | 0.0042 (13) | −0.0006 (14) |
C2 | 0.0530 (16) | 0.0462 (14) | 0.0606 (15) | −0.0032 (12) | 0.0048 (13) | −0.0032 (12) |
C3 | 0.0485 (15) | 0.0427 (13) | 0.0618 (15) | −0.0042 (12) | −0.0019 (13) | −0.0019 (12) |
C4 | 0.0554 (16) | 0.0424 (13) | 0.0608 (15) | −0.0020 (13) | 0.0029 (13) | −0.0095 (12) |
C5 | 0.0564 (16) | 0.0522 (15) | 0.0618 (15) | −0.0027 (14) | −0.0002 (14) | −0.0060 (13) |
C6 | 0.079 (2) | 0.0680 (18) | 0.0573 (16) | 0.0038 (19) | −0.0069 (15) | −0.0057 (15) |
C7 | 0.096 (3) | 0.091 (3) | 0.063 (2) | 0.002 (2) | 0.014 (2) | 0.0059 (19) |
C8 | 0.129 (4) | 0.114 (3) | 0.094 (3) | −0.038 (3) | 0.021 (3) | 0.013 (2) |
C9 | 0.063 (2) | 0.078 (2) | 0.077 (2) | 0.005 (2) | 0.0022 (17) | −0.0216 (18) |
C10 | 0.089 (3) | 0.103 (3) | 0.103 (3) | 0.024 (2) | 0.005 (2) | −0.039 (2) |
C11 | 0.0656 (19) | 0.062 (2) | 0.0616 (17) | 0.0128 (16) | 0.0067 (15) | 0.0019 (15) |
C12 | 0.079 (2) | 0.092 (2) | 0.091 (2) | 0.027 (2) | −0.016 (2) | 0.001 (2) |
C13 | 0.0557 (17) | 0.073 (2) | 0.0663 (18) | 0.0036 (17) | 0.0045 (15) | −0.0106 (16) |
C14 | 0.100 (3) | 0.105 (3) | 0.0617 (18) | 0.009 (3) | 0.0110 (19) | 0.0005 (19) |
C15 | 0.0603 (19) | 0.104 (3) | 0.093 (2) | 0.024 (2) | −0.0085 (19) | −0.009 (2) |
C16 | 0.060 (2) | 0.090 (3) | 0.132 (3) | 0.012 (2) | 0.009 (2) | 0.009 (2) |
C17 | 0.114 (5) | 0.088 (4) | 0.148 (7) | 0.032 (4) | 0.001 (5) | 0.005 (4) |
C18 | 0.065 (3) | 0.076 (3) | 0.177 (7) | 0.002 (3) | 0.024 (4) | 0.014 (4) |
Cl1 | 0.145 (3) | 0.139 (2) | 0.0891 (13) | −0.035 (2) | 0.0098 (17) | 0.0194 (12) |
O1 | 0.0567 (11) | 0.0563 (11) | 0.0592 (10) | 0.0046 (10) | 0.0045 (9) | 0.0007 (9) |
O2 | 0.0847 (14) | 0.0658 (12) | 0.0525 (10) | −0.0044 (12) | 0.0109 (10) | −0.0010 (9) |
O3 | 0.142 (3) | 0.152 (3) | 0.0684 (16) | −0.023 (2) | 0.0269 (18) | −0.0157 (17) |
O4 | 0.0615 (12) | 0.0511 (10) | 0.0703 (11) | 0.0006 (10) | 0.0083 (10) | −0.0140 (10) |
O5 | 0.0772 (16) | 0.103 (2) | 0.171 (3) | −0.0158 (17) | 0.0454 (19) | −0.047 (2) |
O6 | 0.0555 (11) | 0.0503 (10) | 0.0693 (11) | 0.0037 (10) | −0.0078 (10) | −0.0021 (9) |
O7 | 0.0963 (18) | 0.0514 (13) | 0.1189 (19) | 0.0061 (13) | −0.0167 (16) | −0.0007 (13) |
O8 | 0.0637 (12) | 0.0525 (10) | 0.0588 (10) | −0.0018 (10) | 0.0076 (9) | 0.0005 (9) |
O9 | 0.113 (2) | 0.0815 (16) | 0.0962 (17) | −0.0266 (17) | 0.0265 (16) | −0.0324 (14) |
O10 | 0.0503 (11) | 0.0623 (12) | 0.0747 (12) | 0.0105 (10) | 0.0024 (10) | −0.0038 (10) |
O11 | 0.0740 (17) | 0.148 (3) | 0.125 (2) | −0.0122 (19) | 0.0188 (18) | −0.013 (2) |
C1—O10 | 1.383 (3) | C11—O6 | 1.351 (4) |
C1—O1 | 1.421 (3) | C11—C12 | 1.492 (5) |
C1—C2 | 1.516 (4) | C12—H12A | 0.9600 |
C1—H1A | 0.9800 | C12—H12B | 0.9600 |
C2—O8 | 1.443 (3) | C12—H12C | 0.9600 |
C2—C3 | 1.518 (4) | C13—O9 | 1.182 (4) |
C2—H2A | 0.9800 | C13—O8 | 1.353 (4) |
C3—O6 | 1.442 (3) | C13—C14 | 1.483 (5) |
C3—C4 | 1.521 (4) | C14—H14A | 0.9600 |
C3—H3A | 0.9800 | C14—H14B | 0.9600 |
C4—O4 | 1.432 (3) | C14—H14C | 0.9600 |
C4—C5 | 1.519 (4) | C15—O10 | 1.440 (4) |
C4—H4A | 0.9800 | C15—C16 | 1.462 (5) |
C5—O1 | 1.421 (3) | C15—H15A | 0.9700 |
C5—C6 | 1.497 (4) | C15—H15B | 0.9700 |
C5—H5A | 0.9800 | C16—O11 | 1.390 (5) |
C6—O2 | 1.432 (4) | C16—H16A | 0.9700 |
C6—H6A | 0.9700 | C16—H16B | 0.9700 |
C6—H6B | 0.9700 | C17—O11 | 1.430 (4) |
C7—O3 | 1.186 (4) | C17—C18 | 1.518 (4) |
C7—O2 | 1.342 (4) | C17—H17A | 0.9700 |
C7—C8 | 1.469 (6) | C17—H17B | 0.9700 |
C8—H8A | 0.9600 | C18—Cl1 | 1.817 (4) |
C8—H8B | 0.9600 | C18—H18A | 0.9700 |
C8—H8C | 0.9600 | C18—H18B | 0.9700 |
C9—O5 | 1.197 (4) | C17'—O11 | 1.450 (5) |
C9—O4 | 1.340 (4) | C17'—C18' | 1.536 (5) |
C9—C10 | 1.479 (5) | C17'—H17C | 0.9700 |
C10—H10A | 0.9600 | C17'—H17D | 0.9700 |
C10—H10B | 0.9600 | C18'—Cl1' | 1.789 (5) |
C10—H10C | 0.9600 | C18'—H18C | 0.9700 |
C11—O7 | 1.184 (4) | C18'—H18D | 0.9700 |
O10—C1—O1 | 108.1 (2) | H12A—C12—H12B | 109.5 |
O10—C1—C2 | 108.7 (2) | C11—C12—H12C | 109.5 |
O1—C1—C2 | 108.5 (2) | H12A—C12—H12C | 109.5 |
O10—C1—H1A | 110.5 | H12B—C12—H12C | 109.5 |
O1—C1—H1A | 110.5 | O9—C13—O8 | 123.7 (3) |
C2—C1—H1A | 110.5 | O9—C13—C14 | 125.1 (3) |
O8—C2—C1 | 108.8 (2) | O8—C13—C14 | 111.2 (3) |
O8—C2—C3 | 107.8 (2) | C13—C14—H14A | 109.5 |
C1—C2—C3 | 109.8 (2) | C13—C14—H14B | 109.5 |
O8—C2—H2A | 110.1 | H14A—C14—H14B | 109.5 |
C1—C2—H2A | 110.1 | C13—C14—H14C | 109.5 |
C3—C2—H2A | 110.1 | H14A—C14—H14C | 109.5 |
O6—C3—C2 | 106.5 (2) | H14B—C14—H14C | 109.5 |
O6—C3—C4 | 109.1 (2) | O10—C15—C16 | 111.5 (3) |
C2—C3—C4 | 110.4 (2) | O10—C15—H15A | 109.3 |
O6—C3—H3A | 110.2 | C16—C15—H15A | 109.3 |
C2—C3—H3A | 110.2 | O10—C15—H15B | 109.3 |
C4—C3—H3A | 110.2 | C16—C15—H15B | 109.3 |
O4—C4—C5 | 109.3 (2) | H15A—C15—H15B | 108.0 |
O4—C4—C3 | 108.1 (2) | O11—C16—C15 | 111.5 (3) |
C5—C4—C3 | 110.7 (2) | O11—C16—H16A | 109.3 |
O4—C4—H4A | 109.6 | C15—C16—H16A | 109.3 |
C5—C4—H4A | 109.6 | O11—C16—H16B | 109.3 |
C3—C4—H4A | 109.6 | C15—C16—H16B | 109.3 |
O1—C5—C6 | 107.7 (2) | H16A—C16—H16B | 108.0 |
O1—C5—C4 | 108.5 (2) | O11—C17—C18 | 100.3 (4) |
C6—C5—C4 | 113.2 (3) | O11—C17—H17A | 111.7 |
O1—C5—H5A | 109.1 | C18—C17—H17A | 111.7 |
C6—C5—H5A | 109.1 | O11—C17—H17B | 111.7 |
C4—C5—H5A | 109.1 | C18—C17—H17B | 111.7 |
O2—C6—C5 | 107.9 (2) | H17A—C17—H17B | 109.5 |
O2—C6—H6A | 110.1 | C17—C18—Cl1 | 110.5 (4) |
C5—C6—H6A | 110.1 | C17—C18—H18A | 109.5 |
O2—C6—H6B | 110.1 | Cl1—C18—H18A | 109.5 |
C5—C6—H6B | 110.1 | C17—C18—H18B | 109.5 |
H6A—C6—H6B | 108.4 | Cl1—C18—H18B | 109.5 |
O3—C7—O2 | 122.5 (4) | H18A—C18—H18B | 108.1 |
O3—C7—C8 | 126.4 (4) | O11—C17'—C18' | 116.2 (9) |
O2—C7—C8 | 111.1 (3) | O11—C17'—H17C | 108.2 |
C7—C8—H8A | 109.5 | C18'—C17'—H17C | 108.2 |
C7—C8—H8B | 109.5 | O11—C17'—H17D | 108.2 |
H8A—C8—H8B | 109.5 | C18'—C17'—H17D | 108.2 |
C7—C8—H8C | 109.5 | H17C—C17'—H17D | 107.4 |
H8A—C8—H8C | 109.5 | C17'—C18'—Cl1' | 109.7 (8) |
H8B—C8—H8C | 109.5 | C17'—C18'—H18C | 109.7 |
O5—C9—O4 | 123.2 (3) | Cl1'—C18'—H18C | 109.7 |
O5—C9—C10 | 125.8 (3) | C17'—C18'—H18D | 109.7 |
O4—C9—C10 | 111.0 (3) | Cl1'—C18'—H18D | 109.7 |
C9—C10—H10A | 109.5 | H18C—C18'—H18D | 108.2 |
C9—C10—H10B | 109.5 | C1—O1—C5 | 112.0 (2) |
H10A—C10—H10B | 109.5 | C7—O2—C6 | 117.7 (3) |
C9—C10—H10C | 109.5 | C9—O4—C4 | 119.9 (2) |
H10A—C10—H10C | 109.5 | C11—O6—C3 | 119.2 (2) |
H10B—C10—H10C | 109.5 | C13—O8—C2 | 117.0 (2) |
O7—C11—O6 | 124.2 (3) | C1—O10—C15 | 113.6 (2) |
O7—C11—C12 | 126.0 (3) | C16—O11—C17 | 116.9 (5) |
O6—C11—C12 | 109.9 (3) | C16—O11—C17' | 99.1 (7) |
C11—C12—H12A | 109.5 | C17—O11—C17' | 31.4 (8) |
C11—C12—H12B | 109.5 | ||
O10—C1—C2—O8 | −66.3 (3) | O3—C7—O2—C6 | −3.4 (6) |
O1—C1—C2—O8 | 176.4 (2) | C8—C7—O2—C6 | 174.6 (3) |
O10—C1—C2—C3 | 175.9 (2) | C5—C6—O2—C7 | −157.5 (3) |
O1—C1—C2—C3 | 58.6 (3) | O5—C9—O4—C4 | 0.0 (5) |
O8—C2—C3—O6 | 70.8 (3) | C10—C9—O4—C4 | −180.0 (3) |
C1—C2—C3—O6 | −170.8 (2) | C5—C4—O4—C9 | −115.0 (3) |
O8—C2—C3—C4 | −170.8 (2) | C3—C4—O4—C9 | 124.5 (3) |
C1—C2—C3—C4 | −52.4 (3) | O7—C11—O6—C3 | −1.0 (4) |
O6—C3—C4—O4 | −72.1 (3) | C12—C11—O6—C3 | 178.9 (3) |
C2—C3—C4—O4 | 171.1 (2) | C2—C3—O6—C11 | −137.0 (2) |
O6—C3—C4—C5 | 168.3 (2) | C4—C3—O6—C11 | 103.8 (3) |
C2—C3—C4—C5 | 51.5 (3) | O9—C13—O8—C2 | 3.3 (5) |
O4—C4—C5—O1 | −175.2 (2) | C14—C13—O8—C2 | −176.0 (3) |
C3—C4—C5—O1 | −56.3 (3) | C1—C2—O8—C13 | 103.5 (3) |
O4—C4—C5—C6 | 65.3 (3) | C3—C2—O8—C13 | −137.4 (2) |
C3—C4—C5—C6 | −175.7 (2) | O1—C1—O10—C15 | −63.0 (3) |
O1—C5—C6—O2 | −65.3 (3) | C2—C1—O10—C15 | 179.4 (3) |
C4—C5—C6—O2 | 54.6 (3) | C16—C15—O10—C1 | −171.2 (3) |
O10—C15—C16—O11 | 78.8 (4) | C15—C16—O11—C17 | −86.4 (5) |
O11—C17—C18—Cl1 | 177.8 (4) | C15—C16—O11—C17' | −113.8 (11) |
O11—C17'—C18'—Cl1' | −173.9 (14) | C18—C17—O11—C16 | −103.0 (6) |
O10—C1—O1—C5 | 175.8 (2) | C18—C17—O11—C17' | −42.3 (17) |
C2—C1—O1—C5 | −66.5 (3) | C18'—C17'—O11—C16 | 177.2 (19) |
C6—C5—O1—C1 | −172.1 (2) | C18'—C17'—O11—C17 | 49.2 (14) |
C4—C5—O1—C1 | 65.1 (3) |
D—H···A | D—H | H···A | D···A | D—H···A |
C15—H15B···O5i | 0.97 | 2.55 | 3.361 (5) | 141 |
C18—H18B···O9i | 0.97 | 2.48 | 3.335 (7) | 147 |
Symmetry code: (i) x+1, y, z. |
Experimental details
Crystal data | |
Chemical formula | C18H27ClO11 |
Mr | 454.85 |
Crystal system, space group | Orthorhombic, P212121 |
Temperature (K) | 293 |
a, b, c (Å) | 7.5382 (13), 14.195 (3), 21.204 (4) |
V (Å3) | 2269.0 (8) |
Z | 4 |
Radiation type | Mo Kα |
µ (mm−1) | 0.22 |
Crystal size (mm) | 0.50 × 0.22 × 0.16 |
Data collection | |
Diffractometer | Bruker SMART CCD area-detector |
Absorption correction | Multi-scan (SADABS; Sheldrick, 1996) |
Tmin, Tmax | 0.932, 0.956 |
No. of measured, independent and observed [I > 2σ(I)] reflections | 11900, 4018, 3116 |
Rint | 0.024 |
(sin θ/λ)max (Å−1) | 0.597 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.048, 0.140, 1.04 |
No. of reflections | 4018 |
No. of parameters | 282 |
No. of restraints | 6 |
H-atom treatment | H-atom parameters constrained |
Δρmax, Δρmin (e Å−3) | 0.24, −0.14 |
Absolute structure | Flack (1983), 1705 Friedel pairs |
Absolute structure parameter | −0.04 (15) |
Computer programs: SMART (Siemens, 1996), SMART, SAINT (Siemens, 1996), SHELXTL (Sheldrick, 1997), PLATON (Spek, 2003), SHELXTL and PARST95 (Nardelli, 1995).
D—H···A | D—H | H···A | D···A | D—H···A |
C15—H15B···O5i | 0.97 | 2.55 | 3.361 (5) | 141 |
C18—H18B···O9i | 0.97 | 2.48 | 3.335 (7) | 147 |
Symmetry code: (i) x+1, y, z. |
In the title compound, (I) (Fig. 1), all bond lengths and angles are within normal ranges. The galactopyranoside ring adopts a chair conformation. All the substituents attached to the six-membered ring are in equatorial positions, assumed to be the most stable of all possible conformations due to the relatively low energy. There exist five intramolecular hydrogen bonds, forming five closed five-membered rings which contribute to the planarity of the substituents. In the crystal, the molecules are linked into chains along the a axis by C15—H15B···O5 and C18—H18B···O9 intermolecular hydrogen bonds.