1,2:1',2'-Di-O-iso-propyl-idenedi-furan-ose-C12 higher carbon sugar.

In the title compound, C18H28O8, the five-membered ring with one O atom attached to the ethyl substituent has a twisted conformation about the C-O bond. The adjacent cis-fused ring with two O atoms also has a twisted conformation about one of the C-O bonds. The dihedral angle between these rings (all atoms) is 59.05 (12)°. The five-membered ring linked to the ethynyl susbtituent is twisted about a C-C bond; the cis-fused adjacent ring is twisted about a C-O bond [dihedral angle between the rings (all atoms) = 71.78 (12)°]. Two intra-molecular O-H⋯O hydrogen bonds occur. In the crystal, mol-ecules are linked by O-H⋯O hydrogen bonds, generating [001] chains.

Related literature

For further synthetic details, see: Meyer & Jochims (1969 ▶). For background to higher-carbon sugars, see: Iwasa et al. (1978 ▶); Harada et al. (1981 ▶); Liu et al. (2006 ▶).

Experimental

Crystal data

C18H28O8

M = 372.40

Orthorhombic,

a = 21.5802 (6) Å

b = 15.3758 (4) Å

c = 5.73626 (14) Å

V = 1903.37 (8) Å3

Z = 4

Cu Kα radiation

μ = 0.86 mm−1

T = 291 K

0.28 × 0.25 × 0.25 mm

Data collection

Agilent Xcalibur (Eos, Gemini) diffractometer

Absorption correction: multi-scan (SADABS; Sheldrick, 1996) ▶ T min = 0.796, T max = 0.815

7406 measured reflections

3407 independent reflections

3079 reflections with I > 2σ(I)

R int = 0.026

Refinement

R[F 2 > 2σ(F 2)] = 0.037

wR(F 2) = 0.099

S = 1.05

3407 reflections

262 parameters

H atoms treated by a mixture of independent and constrained refinement

Δρmax = 0.18 e Å−3

Δρmin = −0.14 e Å−3

Data collection: CrysAlis PRO (Agilent, 2011 ▶); cell refinement: CrysAlis PRO; data reduction: CrysAlis PRO; program(s) used to solve structure: SHELXS97 (Sheldrick, 2008 ▶); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008 ▶); molecular graphics: OLEX2 (Dolomanov et al., 2009 ▶); software used to prepare material for publication: OLEX2.

Crystal structure: contains datablock(s) I, global. DOI: 10.1107/S1600536813021776/hb7100sup1.cif

Structure factors: contains datablock(s) I. DOI: 10.1107/S1600536813021776/hb7100Isup2.hkl

Click here for additional data file.

Supplementary material file. DOI: 10.1107/S1600536813021776/hb7100Isup3.cml

Additional supplementary materials: crystallographic information; 3D view; checkCIF report

C18H28O8	Dx = 1.300 Mg m−3
Mr = 372.40	Cu Kα radiation, λ = 1.54184 Å
Orthorhombic, P21212	Cell parameters from 3059 reflections
a = 21.5802 (6) Å	θ = 2.9–66.9°
b = 15.3758 (4) Å	µ = 0.86 mm−1
c = 5.73626 (14) Å	T = 291 K
V = 1903.37 (8) Å3	Prism, colourless
Z = 4	0.28 × 0.25 × 0.25 mm
F(000) = 800

Agilent Xcalibur (Eos, Gemini) diffractometer	3407 independent reflections
Radiation source: fine-focus sealed tube	3079 reflections with I > 2σ(I)
Graphite monochromator	Rint = 0.026
Detector resolution: 0 pixels mm-1	θmax = 67.1°, θmin = 3.5°
ω scans	h = −24→25
Absorption correction: multi-scan (SADABS; Sheldrick, 1996)	k = −18→17
Tmin = 0.796, Tmax = 0.815	l = −4→6
7406 measured reflections

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)] = 0.037	H atoms treated by a mixture of independent and constrained refinement
wR(F2) = 0.099	w = 1/[σ2(Fo2) + (0.0493P)2 + 0.1435P] where P = (Fo2 + 2Fc2)/3
S = 1.05	(Δ/σ)max < 0.001
3407 reflections	Δρmax = 0.18 e Å−3
262 parameters	Δρmin = −0.14 e Å−3
0 restraints	Extinction correction: SHELXL97 (Sheldrick, 2008), Fc*=kFc[1+0.001xFc2λ3/sin(2θ)]-1/4
Primary atom site location: structure-invariant direct methods	Extinction coefficient: 0.0064 (4)

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
O1	0.67974 (7)	0.17289 (11)	0.8701 (3)	0.0581 (4)
O1'	0.43970 (8)	0.11163 (12)	0.6552 (3)	0.0671 (5)
O2	0.63054 (6)	0.23737 (9)	0.5648 (2)	0.0418 (3)
O2'	0.48323 (7)	0.15439 (10)	0.9957 (3)	0.0589 (4)
O3	0.66664 (9)	0.40182 (11)	0.5529 (3)	0.0587 (4)
O3'	0.53146 (7)	0.31495 (9)	1.0267 (2)	0.0484 (3)
O4	0.69581 (7)	0.31202 (12)	1.0229 (3)	0.0659 (5)
O4'	0.48425 (7)	0.23484 (9)	0.4771 (2)	0.0520 (3)
C1	0.65181 (9)	0.24742 (14)	0.9636 (4)	0.0496 (5)
H1	0.6260	0.2325	1.0984	0.060*
C1'	0.49427 (10)	0.15364 (13)	0.5914 (4)	0.0506 (5)
H1'	0.5199	0.1155	0.4944	0.061*
C2	0.61210 (9)	0.28500 (12)	0.7651 (3)	0.0402 (4)
C2'	0.52685 (9)	0.17335 (13)	0.8211 (3)	0.0436 (4)
H2'	0.5644	0.1382	0.8392	0.052*
C3	0.63097 (9)	0.38264 (13)	0.7514 (3)	0.0440 (4)
H3A	0.5938	0.4192	0.7538	0.053*
C3'	0.54226 (9)	0.27154 (13)	0.8134 (3)	0.0398 (4)
C4	0.66772 (10)	0.39550 (15)	0.9764 (4)	0.0522 (5)
H4	0.6386	0.4087	1.1025	0.063*
C4'	0.49988 (9)	0.30348 (13)	0.6225 (3)	0.0430 (4)
C5	0.71713 (12)	0.4649 (2)	0.9732 (5)	0.0689 (7)
C5'	0.47675 (10)	0.38174 (15)	0.5919 (4)	0.0528 (5)
C6	0.69055 (13)	0.55472 (19)	0.9364 (6)	0.0798 (8)
H6A	0.6581	0.5649	1.0476	0.120*
H6B	0.6741	0.5591	0.7814	0.120*
H6C	0.7226	0.5973	0.9570	0.120*
C6'	0.43255 (12)	0.40709 (18)	0.4031 (5)	0.0679 (7)
H6'A	0.4021	0.4463	0.4648	0.102*
H6'B	0.4124	0.3560	0.3437	0.102*
H6'C	0.4548	0.4352	0.2794	0.102*
C7	0.68335 (10)	0.18190 (16)	0.6219 (4)	0.0544 (5)
C7'	0.42493 (10)	0.13080 (15)	0.8936 (4)	0.0561 (6)
C8	0.74382 (10)	0.2237 (2)	0.5493 (5)	0.0704 (7)
H8A	0.7776	0.1860	0.5890	0.106*
H8B	0.7486	0.2782	0.6288	0.106*
H8C	0.7436	0.2335	0.3840	0.106*
C8'	0.40403 (12)	0.04898 (16)	1.0145 (6)	0.0737 (8)
H8'A	0.4364	0.0063	1.0071	0.111*
H8'B	0.3676	0.0268	0.9390	0.111*
H8'C	0.3948	0.0617	1.1746	0.111*
C9	0.67296 (12)	0.09468 (15)	0.5109 (5)	0.0677 (7)
H9A	0.6340	0.0715	0.5621	0.101*
H9B	0.7057	0.0558	0.5552	0.101*
H9C	0.6725	0.1010	0.3444	0.101*
C9'	0.37906 (14)	0.2033 (2)	0.9154 (7)	0.0895 (10)
H9'A	0.3409	0.1868	0.8420	0.134*
H9'B	0.3952	0.2545	0.8408	0.134*
H9'C	0.3717	0.2153	1.0772	0.134*
H5'	0.4875 (10)	0.4262 (15)	0.710 (4)	0.053 (6)*
H3'	0.5069 (12)	0.2890 (17)	1.101 (5)	0.058 (7)*
H3	0.6667 (15)	0.360 (2)	0.465 (7)	0.098 (11)*
H5A	0.7420 (12)	0.4587 (17)	1.114 (5)	0.062 (7)*
H5B	0.7476 (13)	0.4461 (19)	0.861 (6)	0.073 (9)*

	U11	U22	U33	U12	U13	U23
O1	0.0578 (8)	0.0739 (10)	0.0424 (8)	0.0150 (7)	−0.0015 (7)	0.0186 (7)
O1'	0.0701 (10)	0.0719 (10)	0.0592 (10)	−0.0228 (8)	−0.0003 (8)	−0.0176 (9)
O2	0.0427 (6)	0.0527 (7)	0.0299 (6)	0.0081 (5)	−0.0010 (5)	0.0049 (6)
O2'	0.0650 (9)	0.0692 (9)	0.0425 (8)	−0.0251 (7)	0.0092 (7)	−0.0090 (7)
O3	0.0817 (11)	0.0624 (9)	0.0319 (8)	−0.0183 (8)	0.0031 (8)	0.0065 (7)
O3'	0.0597 (8)	0.0523 (7)	0.0330 (7)	−0.0070 (7)	0.0067 (7)	−0.0056 (6)
O4	0.0618 (9)	0.0881 (11)	0.0478 (9)	−0.0116 (8)	−0.0254 (8)	0.0167 (9)
O4'	0.0642 (8)	0.0547 (8)	0.0370 (7)	0.0048 (6)	−0.0076 (7)	−0.0093 (6)
C1	0.0485 (10)	0.0668 (12)	0.0334 (10)	−0.0007 (9)	−0.0060 (8)	0.0112 (9)
C1'	0.0598 (11)	0.0494 (10)	0.0426 (11)	−0.0011 (9)	0.0042 (10)	−0.0135 (8)
C2	0.0438 (9)	0.0489 (10)	0.0279 (8)	−0.0001 (8)	−0.0022 (8)	0.0044 (7)
C2'	0.0465 (10)	0.0446 (10)	0.0396 (10)	−0.0009 (8)	0.0041 (8)	−0.0010 (8)
C3	0.0470 (10)	0.0539 (10)	0.0311 (9)	−0.0067 (8)	−0.0039 (8)	0.0044 (9)
C3'	0.0451 (10)	0.0434 (9)	0.0310 (9)	−0.0013 (8)	0.0014 (7)	−0.0023 (8)
C4	0.0516 (11)	0.0718 (13)	0.0334 (10)	−0.0135 (10)	−0.0070 (9)	0.0048 (10)
C4'	0.0397 (9)	0.0521 (11)	0.0371 (9)	−0.0013 (8)	0.0010 (8)	−0.0058 (8)
C5	0.0569 (13)	0.1004 (19)	0.0494 (14)	−0.0283 (13)	−0.0095 (12)	−0.0036 (14)
C5'	0.0528 (11)	0.0533 (11)	0.0525 (12)	0.0079 (9)	−0.0060 (10)	−0.0030 (10)
C6	0.0788 (16)	0.0816 (18)	0.079 (2)	−0.0332 (14)	0.0106 (16)	−0.0152 (15)
C6'	0.0632 (13)	0.0748 (16)	0.0657 (16)	0.0218 (12)	−0.0114 (12)	0.0000 (13)
C7	0.0501 (11)	0.0722 (14)	0.0408 (11)	0.0182 (10)	0.0019 (9)	0.0149 (10)
C7'	0.0547 (11)	0.0557 (12)	0.0579 (13)	−0.0105 (10)	0.0084 (11)	−0.0128 (11)
C8	0.0471 (11)	0.1052 (19)	0.0590 (15)	0.0145 (12)	0.0032 (11)	0.0242 (15)
C8'	0.0734 (15)	0.0600 (13)	0.088 (2)	−0.0209 (11)	0.0128 (15)	−0.0109 (14)
C9	0.0784 (15)	0.0659 (14)	0.0587 (15)	0.0272 (12)	0.0125 (13)	0.0090 (12)
C9'	0.0757 (17)	0.0783 (18)	0.114 (3)	0.0070 (14)	0.0291 (19)	0.0034 (18)

O1—C1	1.401 (3)	C4'—C5'	1.315 (3)
O1—C7	1.433 (3)	C5—C6	1.510 (4)
O1'—C1'	1.392 (3)	C5—H5A	0.98 (3)
O1'—C7'	1.434 (3)	C5—H5B	0.96 (3)
O2—C2	1.420 (2)	C5'—C6'	1.495 (3)
O2—C7	1.461 (2)	C5'—H5'	0.99 (2)
O2'—C2'	1.405 (2)	C6—H6A	0.9600
O2'—C7'	1.435 (3)	C6—H6B	0.9600
O3—C3	1.406 (2)	C6—H6C	0.9600
O3—H3	0.82 (4)	C6'—H6'A	0.9600
O3'—C3'	1.413 (2)	C6'—H6'B	0.9600
O3'—H3'	0.79 (3)	C6'—H6'C	0.9600
O4—C1	1.416 (3)	C7—C9	1.501 (4)
O4—C4	1.444 (3)	C7—C8	1.513 (3)
O4'—C4'	1.387 (2)	C7'—C9'	1.496 (4)
O4'—C1'	1.427 (3)	C7'—C8'	1.506 (4)
C1—C2	1.538 (3)	C8—H8A	0.9600
C1—H1	0.9800	C8—H8B	0.9600
C1'—C2'	1.524 (3)	C8—H8C	0.9600
C1'—H1'	0.9800	C8'—H8'A	0.9600
C2—C3'	1.546 (3)	C8'—H8'B	0.9600
C2—C3	1.557 (3)	C8'—H8'C	0.9600
C2'—C3'	1.547 (3)	C9—H9A	0.9600
C2'—H2'	0.9800	C9—H9B	0.9600
C3—C4	1.528 (3)	C9—H9C	0.9600
C3—H3A	0.9800	C9'—H9'A	0.9600
C3'—C4'	1.509 (3)	C9'—H9'B	0.9600
C4—C5	1.508 (3)	C9'—H9'C	0.9600
C4—H4	0.9800
C1—O1—C7	108.93 (17)	C6—C5—H5A	114.4 (16)
C1'—O1'—C7'	110.09 (16)	C4—C5—H5B	106.1 (18)
C2—O2—C7	109.79 (14)	C6—C5—H5B	116.1 (19)
C2'—O2'—C7'	110.41 (16)	H5A—C5—H5B	99 (2)
C3—O3—H3	109 (2)	C4'—C5'—C6'	125.3 (2)
C3'—O3'—H3'	109.9 (19)	C4'—C5'—H5'	116.9 (14)
C1—O4—C4	107.33 (15)	C6'—C5'—H5'	117.7 (14)
C4'—O4'—C1'	110.65 (15)	C5—C6—H6A	109.5
O1—C1—O4	112.17 (17)	C5—C6—H6B	109.5
O1—C1—C2	105.30 (17)	H6A—C6—H6B	109.5
O4—C1—C2	106.74 (16)	C5—C6—H6C	109.5
O1—C1—H1	110.8	H6A—C6—H6C	109.5
O4—C1—H1	110.8	H6B—C6—H6C	109.5
C2—C1—H1	110.8	C5'—C6'—H6'A	109.5
O1'—C1'—O4'	113.50 (18)	C5'—C6'—H6'B	109.5
O1'—C1'—C2'	104.77 (17)	H6'A—C6'—H6'B	109.5
O4'—C1'—C2'	107.05 (16)	C5'—C6'—H6'C	109.5
O1'—C1'—H1'	110.4	H6'A—C6'—H6'C	109.5
O4'—C1'—H1'	110.4	H6'B—C6'—H6'C	109.5
C2'—C1'—H1'	110.4	O1—C7—O2	103.70 (17)
O2—C2—C1	104.42 (15)	O1—C7—C9	109.1 (2)
O2—C2—C3'	110.43 (15)	O2—C7—C9	108.06 (19)
C1—C2—C3'	111.12 (15)	O1—C7—C8	111.2 (2)
O2—C2—C3	112.52 (15)	O2—C7—C8	111.28 (18)
C1—C2—C3	104.71 (15)	C9—C7—C8	113.0 (2)
C3'—C2—C3	113.14 (16)	O1'—C7'—O2'	104.26 (17)
O2'—C2'—C1'	105.43 (16)	O1'—C7'—C9'	112.3 (3)
O2'—C2'—C3'	111.52 (16)	O2'—C7'—C9'	110.9 (2)
C1'—C2'—C3'	105.59 (16)	O1'—C7'—C8'	109.5 (2)
O2'—C2'—H2'	111.3	O2'—C7'—C8'	106.6 (2)
C1'—C2'—H2'	111.3	C9'—C7'—C8'	112.7 (2)
C3'—C2'—H2'	111.3	C7—C8—H8A	109.5
O3—C3—C4	111.89 (16)	C7—C8—H8B	109.5
O3—C3—C2	112.73 (17)	H8A—C8—H8B	109.5
C4—C3—C2	102.58 (16)	C7—C8—H8C	109.5
O3—C3—H3A	109.8	H8A—C8—H8C	109.5
C4—C3—H3A	109.8	H8B—C8—H8C	109.5
C2—C3—H3A	109.8	C7'—C8'—H8'A	109.5
O3'—C3'—C4'	112.00 (15)	C7'—C8'—H8'B	109.5
O3'—C3'—C2	104.63 (15)	H8'A—C8'—H8'B	109.5
C4'—C3'—C2	114.66 (15)	C7'—C8'—H8'C	109.5
O3'—C3'—C2'	113.63 (16)	H8'A—C8'—H8'C	109.5
C4'—C3'—C2'	102.01 (15)	H8'B—C8'—H8'C	109.5
C2—C3'—C2'	110.20 (15)	C7—C9—H9A	109.5
O4—C4—C5	109.52 (19)	C7—C9—H9B	109.5
O4—C4—C3	104.99 (17)	H9A—C9—H9B	109.5
C5—C4—C3	116.62 (19)	C7—C9—H9C	109.5
O4—C4—H4	108.5	H9A—C9—H9C	109.5
C5—C4—H4	108.5	H9B—C9—H9C	109.5
C3—C4—H4	108.5	C7'—C9'—H9'A	109.5
C5'—C4'—O4'	121.58 (19)	C7'—C9'—H9'B	109.5
C5'—C4'—C3'	128.69 (19)	H9'A—C9'—H9'B	109.5
O4'—C4'—C3'	109.65 (16)	C7'—C9'—H9'C	109.5
C4—C5—C6	112.3 (2)	H9'A—C9'—H9'C	109.5
C4—C5—H5A	108.0 (16)	H9'B—C9'—H9'C	109.5
C7—O1—C1—O4	−90.8 (2)	C3—C2—C3'—C2'	179.19 (16)
C7—O1—C1—C2	24.9 (2)	O2'—C2'—C3'—O3'	24.3 (2)
C4—O4—C1—O1	145.01 (18)	C1'—C2'—C3'—O3'	138.29 (16)
C4—O4—C1—C2	30.2 (2)	O2'—C2'—C3'—C4'	−96.47 (18)
C7'—O1'—C1'—O4'	−95.8 (2)	C1'—C2'—C3'—C4'	17.55 (19)
C7'—O1'—C1'—C2'	20.6 (2)	O2'—C2'—C3'—C2	141.33 (16)
C4'—O4'—C1'—O1'	107.62 (19)	C1'—C2'—C3'—C2	−104.65 (18)
C4'—O4'—C1'—C2'	−7.5 (2)	C1—O4—C4—C5	−164.72 (19)
C7—O2—C2—C1	−6.9 (2)	C1—O4—C4—C3	−38.8 (2)
C7—O2—C2—C3'	−126.46 (17)	O3—C3—C4—O4	−90.6 (2)
C7—O2—C2—C3	106.07 (18)	C2—C3—C4—O4	30.5 (2)
O1—C1—C2—O2	−10.73 (19)	O3—C3—C4—C5	30.8 (3)
O4—C1—C2—O2	108.66 (18)	C2—C3—C4—C5	151.9 (2)
O1—C1—C2—C3'	108.34 (18)	C1'—O4'—C4'—C5'	−157.3 (2)
O4—C1—C2—C3'	−132.27 (17)	C1'—O4'—C4'—C3'	19.9 (2)
O1—C1—C2—C3	−129.19 (17)	O3'—C3'—C4'—C5'	32.0 (3)
O4—C1—C2—C3	−9.8 (2)	C2—C3'—C4'—C5'	−87.0 (3)
C7'—O2'—C2'—C1'	−4.3 (2)	C2'—C3'—C4'—C5'	153.9 (2)
C7'—O2'—C2'—C3'	109.84 (19)	O3'—C3'—C4'—O4'	−144.87 (16)
O1'—C1'—C2'—O2'	−9.9 (2)	C2—C3'—C4'—O4'	96.09 (19)
O4'—C1'—C2'—O2'	110.96 (17)	C2'—C3'—C4'—O4'	−23.00 (19)
O1'—C1'—C2'—C3'	−128.03 (17)	O4—C4—C5—C6	−177.3 (2)
O4'—C1'—C2'—C3'	−7.2 (2)	C3—C4—C5—C6	63.7 (3)
O2—C2—C3—O3	−4.8 (2)	O4'—C4'—C5'—C6'	−0.5 (4)
C1—C2—C3—O3	107.97 (18)	C3'—C4'—C5'—C6'	−177.0 (2)
C3'—C2—C3—O3	−130.87 (17)	C1—O1—C7—O2	−28.9 (2)
O2—C2—C3—C4	−125.35 (16)	C1—O1—C7—C9	−143.91 (18)
C1—C2—C3—C4	−12.5 (2)	C1—O1—C7—C8	90.7 (2)
C3'—C2—C3—C4	108.61 (18)	C2—O2—C7—O1	21.6 (2)
O2—C2—C3'—O3'	174.56 (14)	C2—O2—C7—C9	137.29 (18)
C1—C2—C3'—O3'	59.2 (2)	C2—O2—C7—C8	−98.0 (2)
C3—C2—C3'—O3'	−58.30 (19)	C1'—O1'—C7'—O2'	−23.2 (3)
O2—C2—C3'—C4'	−62.3 (2)	C1'—O1'—C7'—C9'	97.0 (2)
C1—C2—C3'—C4'	−177.75 (17)	C1'—O1'—C7'—C8'	−137.0 (2)
C3—C2—C3'—C4'	64.8 (2)	C2'—O2'—C7'—O1'	16.3 (2)
O2—C2—C3'—C2'	52.04 (19)	C2'—O2'—C7'—C9'	−104.8 (2)
C1—C2—C3'—C2'	−63.4 (2)	C2'—O2'—C7'—C8'	132.2 (2)

D—H···A	D—H	H···A	D···A	D—H···A
O3′—H3′···O4′i	0.79 (3)	2.36 (3)	3.038 (2)	144 (2)
O3′—H3′···O2′	0.79 (3)	2.22 (3)	2.685 (2)	119 (2)
O3—H3···O2	0.82 (4)	2.11 (3)	2.647 (2)	122 (3)

Table 1

Hydrogen-bond geometry (Å, °)

D—H⋯A	D—H	H⋯A	D⋯A	D—H⋯A
O3′—H3′⋯O4′i	0.79 (3)	2.36 (3)	3.038 (2)	144 (2)
O3′—H3′⋯O2′	0.79 (3)	2.22 (3)	2.685 (2)	119 (2)
O3—H3⋯O2	0.82 (4)	2.11 (3)	2.647 (2)	122 (3)

Symmetry code: (i) .