Related literature {#sec1}
==================

For related literature, see: Larsen & Breinholt (1999[@bb3]).

Experimental {#sec2}
============

 {#sec2.1}

### Crystal data {#sec2.1.1}

C~13~H~12~Cl~2~O~5~*M* *~r~* = 319.13Monoclinic,*a* = 9.483 (3) Å*b* = 6.757 (2) Å*c* = 10.548 (3) Åβ = 99.217 (5)°*V* = 667.1 (4) Å^3^*Z* = 2Mo *K*α radiationμ = 0.50 mm^−1^*T* = 293 (2) K0.50 × 0.34 × 0.21 mm

### Data collection {#sec2.1.2}

Bruker SMART 1K area-detector diffractometerAbsorption correction: multi-scan (*SADABS*; Sheldrick, 1996[@bb4]) *T* ~min~ = 0.787, *T* ~max~ = 0.9024190 measured reflections2524 independent reflections2320 reflections with *I* \> 2σ(*I*)*R* ~int~ = 0.019

### Refinement {#sec2.1.3}

*R*\[*F* ^2^ \> 2σ(*F* ^2^)\] = 0.035*wR*(*F* ^2^) = 0.095*S* = 1.072524 reflections184 parameters1 restraintH-atom parameters constrainedΔρ~max~ = 0.26 e Å^−3^Δρ~min~ = −0.39 e Å^−3^Absolute structure: Flack (1983[@bb2]), 931 Friedel pairsFlack parameter: 0.06 (8)

 {#d5e460}

Data collection: *SMART* (Bruker, 1999[@bb1]); cell refinement: *SAINT-Plus* (Bruker, 1999[@bb1]); data reduction: *SAINT-Plus*; program(s) used to solve structure: *SHELXS97* (Sheldrick, 2008[@bb5]); program(s) used to refine structure: *SHELXL97* (Sheldrick, 2008[@bb5]); molecular graphics: *SHELXTL* (Sheldrick, 2008[@bb5]); software used to prepare material for publication: *SHELXTL*.

Supplementary Material
======================

Crystal structure: contains datablocks I, global. DOI: [10.1107/S1600536808026391/ww2128sup1.cif](http://dx.doi.org/10.1107/S1600536808026391/ww2128sup1.cif)

Structure factors: contains datablocks I. DOI: [10.1107/S1600536808026391/ww2128Isup2.hkl](http://dx.doi.org/10.1107/S1600536808026391/ww2128Isup2.hkl)

Additional supplementary materials: [crystallographic information](http://scripts.iucr.org/cgi-bin/sendsupfiles?ww2128&file=ww2128sup0.html&mime=text/html); [3D view](http://scripts.iucr.org/cgi-bin/sendcif?ww2128sup1&Qmime=cif); [checkCIF report](http://scripts.iucr.org/cgi-bin/paper?ww2128&checkcif=yes)

Supplementary data and figures for this paper are available from the IUCr electronic archives (Reference: [WW2128](http://scripts.iucr.org/cgi-bin/sendsup?ww2128)).

This work is supported by Guangdong Provincial Science Foundation.

Comment
=======

As a kind of natural products from marine microorganisms, 3-((*R*)-3,3-dichloro-2-hydroxypropyl)-8-hydroxy-6-methoxy-1*H*- isochromen-1-one, is a isocoumarin-related dihydrodiaportin compound, from the fermentation broth of *actinomycetes Streptomyces sp*. (V4). In the primary biotest, the title compound showed weak activity inhibiting AchE *in vitro* (IC~50~ = 3.9 uM/ml).

Larsen *et al.* also reported dichlorodiaportin (Larsen & Breinholt, 1999), but it was isolated from quite different microorganism, the typical cheese-associated isolates of *Penicillium nalgiovense*, and its structure was only elucidated based on spectral analysis, and the absolute configuration was depicted S by comparison with the optical rotation of those reported for several analogues of known absolute configuration. However, according to the optical rotation and our crystal structure, it is clear that Larsen\'s compound is the same compound as our dichlorodiaportin.

We report here the crystal structure of (I). Compound (I) crystallizes in space group P 2~1~, and the 8-hydroxy-isochromen-1-one core rings in (I) is a planar conjugated ring system (Fig.1). In the crystal structure, there is an intra- molecular hydrogen bond \[O···O = 2.624 (2) Å, and O---H···O = 144.6°\] of O---H···O type between O3 and O5 hyroxyl groups in (I), and adjacent molecules form an infinite one-dimensional chain along *b* axis *via* O---H···O intermolecular hydrogen bonds \[O···O = 2.913 (3)Å, and O---H···O = 149.0°\] between the O3 and O5 hydroxyl groups (Fig.1 and Table 2).

Experimental {#experimental}
============

A strain of *streptomyces sp*. (V~4~) was isolated from the South China Sea, has been deposited in the School of Chemistry and Chemical Engineering, Sun Yat-Sen University, Guangzhou, P. R. China.

Culture conditions: soluble starch 10 g l^-1^, Ca carbonate 2 g l^-1^, ammorium sulfate 2 g l^-1^, dipotassium hydrogen phosphate 1 g l^-1^, magnesium sulfate hydrated 1 g l^-1^, sodium chloride 1 g l^-1^, yeast extract 10 g l^-1^, pH 7.2 and incubation at 298 K for 6 d. For the extraction and separation of the metabolite, the cultures (100 *L*) of (I) were filtered through cheesecloth. The filtrate was concentrated to 5*L* below 323 K, then extracted three times by shaking with an equal volume of ethyl acetate. The extract was evaporated under reduced pressure. The combined organic extracts were subjected to silica-gel column chromatography, eluting with petroleum ether/ethyl (1:1 *v*/*v*) acetate, to yield (I).

Colorless block crystals of (I) were obtained by evaporation of a methanol solution.

The compound identity was confirmed by NMR spectroscopy, Elemental Analysis, IR, FAB-MS, melting point and optical rotation.

^1^H-NMR in CDCl~3~ (500 MHz): 6.59 (s, 1H), 6,57 (d, J = 2.0 1H), 3.01 (m, 1H), 2.95 (m, 1H), 4.42 (m, 1H), 6.20 (d, J = 3.0 1H), 3.92 (s, 3H), 11.10 (s, OH) and 5.20 (d, J = 6.0, OH).

^13^C-NMR in CDCl~3~ (125 MHz): 166.8 (C), 154 (C), 107.4 (CH), 140.4 (C), 102.1 (CH), 168.0 (C), 101.2 (CH), 164.3 (C), 111.4 (C), 37.3 (CH~2~), 73.1 (CH), 77.2 (CH) and 56.3 (CH~3~).

Elemental Analysis: C 48.91, H 3.97, calc. (for C~13~H~12~O~5~C~l2~): C 48.93, H 3.79%.

IR (KBr): 3474, 3032, 2986, 1693, 1643, 1568, 1465, 1356, 1237, 1197, 1096, 853, 790, 690.

FAB-MS: 319 \[*M*\]^+^, 321 \[*M*+2\]^+^, 235 \[*M*-CHCl~2~\]^+^, 107, 77.

M.p. 419--420 K.

\[α\]^20^~D~ = +7.8 (c = 0.05, MeOH).

Refinement {#refinement}
==========

The H atoms were positioned geometrically and were treated as riding on their parent C atoms, with C---H distances in the range of 0.93--0.98 Å, with *U*~iso~ (H) = 1.2--1.5 times *U*~eq~ of the parent atom. H atoms attached to O3 and O5 (hydroxyl oxygen atoms) were located in difference Fourier maps and refined initially with distance restraints of 0.82 Å with *U*~iso~ (H) = 1.5 times *U*~eq~ (O).

Figures
=======

![View of the molecules in the asymmetric unit of (I), with anisotropic displacement parameters drawn at the 50% probability level.](e-64-o1801-fig1){#Fap1}

![A view of the hydrogen-bonded molecular chains (Dashed lines). The chains are aligned parallel to the crystallographic b axis. H atoms not involved in H-bonding have been omitted for clarity. Symmetry codes: (I) 1 - x,y - 1/2,-z; (II) 1 - x,1/2 + y,-z.](e-64-o1801-fig2){#Fap2}

![Supplementary figure.](e-64-o1801-fig3){#Fap3}

Crystal data {#tablewrapcrystaldatalong}
============

  ---------------------- ---------------------------------------
  C~13~H~12~Cl~2~O~5~    *F*~000~ = 328
  *M~r~* = 319.13        *D*~x~ = 1.589 Mg m^−3^
  Monoclinic, *P*2~1~    Melting point: 420 K
  Hall symbol: P 2yb     Mo *K*α radiation λ = 0.71073 Å
  *a* = 9.483 (3) Å      Cell parameters from 1002 reflections
  *b* = 6.757 (2) Å      θ = 2.7--27.0º
  *c* = 10.548 (3) Å     µ = 0.50 mm^−1^
  β = 99.217 (5)º        *T* = 293 (2) K
  *V* = 667.1 (4) Å^3^   Block, colorless
  *Z* = 2                0.50 × 0.34 × 0.21 mm
  ---------------------- ---------------------------------------

Data collection {#tablewrapdatacollectionlong}
===============

  ------------------------------------------------------------ --------------------------------------
  Bruker SMART 1K area-detector diffractometer                 2524 independent reflections
  Radiation source: fine-focus sealed tube                     2320 reflections with *I* \> 2σ(*I*)
  Monochromator: graphite                                      *R*~int~ = 0.019
  *T* = 293(2) K                                               θ~max~ = 27.1º
  φ and ω scans                                                θ~min~ = 2.0º
  Absorption correction: multi-scan(SADABS; Sheldrick, 1996)   *h* = −12→11
  *T*~min~ = 0.787, *T*~max~ = 0.902                           *k* = −8→7
  4190 measured reflections                                    *l* = −13→11
  ------------------------------------------------------------ --------------------------------------

Refinement {#tablewraprefinementdatalong}
==========

  ---------------------------------------------------------------- ---------------------------------------------------------------------------------------------------
  Refinement on *F*^2^                                             Hydrogen site location: difference Fourier map
  Least-squares matrix: full                                       H-atom parameters constrained
  *R*\[*F*^2^ \> 2σ(*F*^2^)\] = 0.035                                *w* = 1/\[σ^2^(*F*~o~^2^) + (0.0525*P*)^2^ + 0.1606*P*\] where *P* = (*F*~o~^2^ + 2*F*~c~^2^)/3
  *wR*(*F*^2^) = 0.095                                             (Δ/σ)~max~ \< 0.001
  *S* = 1.07                                                       Δρ~max~ = 0.26 e Å^−3^
  2524 reflections                                                 Δρ~min~ = −0.39 e Å^−3^
  184 parameters                                                   Extinction correction: none
  1 restraint                                                      Absolute structure: Flack (1983), 931 Friedel pairs
  Primary atom site location: structure-invariant direct methods   Flack parameter: 0.06 (8)
  Secondary atom site location: difference Fourier map             
  ---------------------------------------------------------------- ---------------------------------------------------------------------------------------------------

Special details {#specialdetails}
===============

  -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
  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 *F*^2^ against ALL reflections. The weighted *R*-factor *wR* and goodness of fit *S* are based on *F*^2^, conventional *R*-factors *R* are based on *F*, with *F* set to zero for negative *F*^2^. The threshold expression of *F*^2^ \> σ(*F*^2^) is used only for calculating *R*-factors(gt) *etc*. and is not relevant to the choice of reflections for refinement. *R*-factors based on *F*^2^ are statistically about twice as large as those based on *F*, and *R*- factors based on ALL data will be even larger.
  -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

Fractional atomic coordinates and isotropic or equivalent isotropic displacement parameters (Å^2^) {#tablewrapcoords}
==================================================================================================

  ------ -------------- -------------- --------------- -------------------- --
         *x*            *y*            *z*             *U*~iso~\*/*U*~eq~   
  C1     0.54937 (19)   0.4698 (4)     −0.06308 (18)   0.0334 (4)           
  C2     0.55042 (19)   0.4661 (4)     0.07326 (17)    0.0317 (4)           
  C3     0.6821 (2)     0.4688 (4)     0.15853 (18)    0.0356 (4)           
  C4     0.6830 (2)     0.4614 (4)     0.28857 (19)    0.0387 (4)           
  H4     0.7694         0.4607         0.3446          0.046\*              
  C5     0.5540 (2)     0.4548 (4)     0.33695 (18)    0.0361 (4)           
  C6     0.4234 (2)     0.4543 (4)     0.25529 (18)    0.0369 (4)           
  H6     0.3383         0.4501         0.2884          0.044\*              
  C7     0.42213 (19)   0.4602 (4)     0.12326 (17)    0.0332 (4)           
  C8     0.29092 (19)   0.4610 (4)     0.03216 (18)    0.0358 (4)           
  H8     0.2038         0.4583         0.0619          0.043\*              
  C9     0.29283 (18)   0.4657 (4)     −0.09298 (17)   0.0332 (4)           
  C10    0.17165 (19)   0.4676 (5)     −0.20293 (17)   0.0356 (4)           
  H10A   0.1783         0.3505         −0.2548         0.043\*              
  H10B   0.1821         0.5820         −0.2562         0.043\*              
  C11    0.02418 (19)   0.4735 (5)     −0.16418 (17)   0.0393 (5)           
  H11    0.0161         0.3586         −0.1091         0.047\*              
  C12    −0.0964 (2)    0.4600 (5)     −0.2789 (2)     0.0471 (5)           
  H12    −0.1876        0.4740         −0.2473         0.057\*              
  C13    0.4413 (3)     0.4492 (5)     0.5247 (2)      0.0502 (5)           
  H13A   0.3875         0.5677         0.5015          0.075\*              
  H13B   0.4673         0.4429         0.6163          0.075\*              
  H13C   0.3843         0.3359         0.4950          0.075\*              
  Cl1    −0.08373 (8)   0.65243 (17)   −0.39091 (7)    0.0803 (3)           
  Cl2    −0.09425 (9)   0.22660 (16)   −0.35406 (9)    0.0829 (3)           
  O1     0.42041 (13)   0.4685 (3)     −0.14183 (12)   0.0349 (3)           
  O2     0.65509 (15)   0.4724 (3)     −0.11589 (14)   0.0452 (4)           
  O3     0.80850 (14)   0.4768 (3)     0.11445 (14)    0.0459 (4)           
  H3     0.7939         0.4940         0.0365          0.069\*              
  O4     0.56832 (17)   0.4506 (3)     0.46640 (14)    0.0463 (4)           
  O5     0.00051 (18)   0.6449 (3)     −0.09336 (15)   0.0524 (5)           
  H5     0.0323         0.7420         −0.1259         0.079\*              
  ------ -------------- -------------- --------------- -------------------- --

Atomic displacement parameters (Å^2^) {#tablewrapadps}
=====================================

  ----- ------------- ------------- ------------- -------------- ------------- --------------
        *U*^11^       *U*^22^       *U*^33^       *U*^12^        *U*^13^       *U*^23^
  C1    0.0317 (8)    0.0335 (10)   0.0355 (9)    0.0005 (10)    0.0067 (7)    −0.0017 (10)
  C2    0.0315 (8)    0.0309 (9)    0.0325 (9)    0.0027 (10)    0.0044 (7)    0.0009 (9)
  C3    0.0321 (9)    0.0324 (10)   0.0414 (10)   0.0010 (11)    0.0034 (7)    −0.0001 (10)
  C4    0.0363 (9)    0.0401 (10)   0.0367 (10)   0.0003 (11)    −0.0033 (7)   −0.0017 (11)
  C5    0.0442 (10)   0.0323 (10)   0.0305 (9)    −0.0006 (11)   0.0016 (7)    −0.0008 (10)
  C6    0.0364 (9)    0.0434 (11)   0.0316 (9)    0.0011 (11)    0.0072 (7)    0.0010 (10)
  C7    0.0323 (9)    0.0363 (10)   0.0309 (9)    −0.0008 (11)   0.0046 (7)    −0.0008 (10)
  C8    0.0287 (8)    0.0461 (11)   0.0330 (9)    0.0007 (11)    0.0067 (7)    0.0016 (11)
  C9    0.0297 (8)    0.0352 (10)   0.0354 (9)    −0.0024 (10)   0.0070 (7)    −0.0031 (10)
  C10   0.0330 (8)    0.0470 (11)   0.0271 (8)    0.0013 (11)    0.0058 (6)    −0.0018 (10)
  C11   0.0333 (9)    0.0568 (13)   0.0281 (9)    −0.0076 (11)   0.0060 (7)    −0.0016 (11)
  C12   0.0311 (9)    0.0760 (16)   0.0349 (10)   −0.0087 (14)   0.0074 (7)    −0.0079 (13)
  C13   0.0613 (13)   0.0601 (15)   0.0300 (10)   0.0009 (15)    0.0095 (9)    0.0023 (11)
  Cl1   0.0525 (4)    0.1251 (9)    0.0574 (4)    −0.0046 (4)    −0.0090 (3)   0.0333 (5)
  Cl2   0.0561 (4)    0.1063 (7)    0.0842 (5)    −0.0205 (4)    0.0046 (4)    −0.0486 (5)
  O1    0.0296 (6)    0.0467 (8)    0.0291 (6)    0.0006 (8)     0.0062 (5)    −0.0002 (7)
  O2    0.0332 (7)    0.0632 (10)   0.0413 (7)    0.0014 (9)     0.0126 (6)    0.0000 (9)
  O3    0.0313 (6)    0.0623 (10)   0.0434 (8)    0.0011 (9)     0.0038 (5)    0.0036 (9)
  O4    0.0511 (8)    0.0562 (9)    0.0298 (7)    0.0021 (10)    0.0011 (6)    0.0012 (8)
  O5    0.0412 (8)    0.0737 (13)   0.0441 (8)    0.0008 (9)     0.0120 (6)    −0.0175 (9)
  ----- ------------- ------------- ------------- -------------- ------------- --------------

Geometric parameters (Å, °) {#tablewrapgeomlong}
===========================

  ------------------- ------------- ----------------------- --------------
  C1---O2             1.223 (2)     C9---C10                1.496 (2)
  C1---O1             1.364 (2)     C10---C11               1.519 (2)
  C1---C2             1.437 (3)     C10---H10A              0.9700
  C2---C7             1.402 (2)     C10---H10B              0.9700
  C2---C3             1.417 (2)     C11---O5                1.415 (3)
  C3---O3             1.354 (2)     C11---C12               1.529 (3)
  C3---C4             1.371 (3)     C11---H11               0.9800
  C4---C5             1.400 (3)     C12---Cl2               1.766 (3)
  C4---H4             0.9300        C12---Cl1               1.774 (3)
  C5---O4             1.351 (2)     C12---H12               0.9800
  C5---C6             1.390 (3)     C13---O4                1.437 (3)
  C6---C7             1.391 (3)     C13---H13A              0.9600
  C6---H6             0.9300        C13---H13B              0.9600
  C7---C8             1.445 (2)     C13---H13C              0.9600
  C8---C9             1.323 (3)     O3---H3                 0.8200
  C8---H8             0.9300        O5---H5                 0.8200
  C9---O1             1.389 (2)                             
                                                            
  O2---C1---O1        116.32 (17)   C9---C10---H10A         108.6
  O2---C1---C2        125.56 (17)   C11---C10---H10A        108.6
  O1---C1---C2        118.12 (16)   C9---C10---H10B         108.6
  C7---C2---C3        119.41 (16)   C11---C10---H10B        108.6
  C7---C2---C1        120.64 (16)   H10A---C10---H10B       107.6
  C3---C2---C1        119.94 (16)   O5---C11---C10          113.2 (2)
  O3---C3---C4        118.72 (17)   O5---C11---C12          107.8 (2)
  O3---C3---C2        121.39 (17)   C10---C11---C12         112.93 (15)
  C4---C3---C2        119.89 (17)   O5---C11---H11          107.6
  C3---C4---C5        119.98 (17)   C10---C11---H11         107.6
  C3---C4---H4        120.0         C12---C11---H11         107.6
  C5---C4---H4        120.0         C11---C12---Cl2         110.3 (2)
  O4---C5---C6        124.15 (19)   C11---C12---Cl1         111.17 (19)
  O4---C5---C4        114.65 (17)   Cl2---C12---Cl1         110.42 (12)
  C6---C5---C4        121.19 (17)   C11---C12---H12         108.3
  C5---C6---C7        118.97 (18)   Cl2---C12---H12         108.3
  C5---C6---H6        120.5         Cl1---C12---H12         108.3
  C7---C6---H6        120.5         O4---C13---H13A         109.5
  C6---C7---C2        120.54 (17)   O4---C13---H13B         109.5
  C6---C7---C8        122.30 (17)   H13A---C13---H13B       109.5
  C2---C7---C8        117.15 (16)   O4---C13---H13C         109.5
  C9---C8---C7        121.02 (17)   H13A---C13---H13C       109.5
  C9---C8---H8        119.5         H13B---C13---H13C       109.5
  C7---C8---H8        119.5         C1---O1---C9            121.57 (14)
  C8---C9---O1        121.48 (16)   C3---O3---H3            109.5
  C8---C9---C10       129.93 (17)   C5---O4---C13           118.50 (15)
  O1---C9---C10       108.59 (15)   C11---O5---H5           109.5
  C9---C10---C11      114.68 (15)                           
                                                            
  O2---C1---C2---C7   −179.0 (3)    C1---C2---C7---C8       −0.9 (4)
  O1---C1---C2---C7   0.4 (4)       C6---C7---C8---C9       −179.7 (3)
  O2---C1---C2---C3   1.1 (4)       C2---C7---C8---C9       0.5 (4)
  O1---C1---C2---C3   −179.5 (2)    C7---C8---C9---O1       0.4 (4)
  C7---C2---C3---O3   −179.2 (2)    C7---C8---C9---C10      −179.9 (3)
  C1---C2---C3---O3   0.7 (4)       C8---C9---C10---C11     2.8 (5)
  C7---C2---C3---C4   1.4 (4)       O1---C9---C10---C11     −177.6 (2)
  C1---C2---C3---C4   −178.7 (2)    C9---C10---C11---O5     61.4 (3)
  O3---C3---C4---C5   179.4 (2)     C9---C10---C11---C12    −175.8 (3)
  C2---C3---C4---C5   −1.2 (4)      O5---C11---C12---Cl2    −168.62 (15)
  C3---C4---C5---O4   −179.1 (3)    C10---C11---C12---Cl2   65.6 (3)
  C3---C4---C5---C6   0.4 (4)       O5---C11---C12---Cl1    68.5 (2)
  O4---C5---C6---C7   179.6 (2)     C10---C11---C12---Cl1   −57.3 (3)
  C4---C5---C6---C7   0.1 (4)       O2---C1---O1---C9       −180.0 (2)
  C5---C6---C7---C2   0.1 (4)       C2---C1---O1---C9       0.6 (4)
  C5---C6---C7---C8   −179.7 (3)    C8---C9---O1---C1       −1.0 (4)
  C3---C2---C7---C6   −0.8 (4)      C10---C9---O1---C1      179.3 (2)
  C1---C2---C7---C6   179.3 (3)     C6---C5---O4---C13      −1.2 (4)
  C3---C2---C7---C8   179.0 (2)     C4---C5---O4---C13      178.3 (3)
  ------------------- ------------- ----------------------- --------------

Hydrogen-bond geometry (Å, °) {#tablewraphbondslong}
=============================

  ----------------- --------- --------- ----------- ---------------
  *D*---H···*A*     *D*---H   H···*A*   *D*···*A*   *D*---H···*A*
  O5---H5···O3^i^   0.82      2.18      2.913 (3)   149
  O3---H3···O2      0.82      1.91      2.624 (2)   145
  ----------------- --------- --------- ----------- ---------------

Symmetry codes: (i) −*x*+1, *y*+1/2, −*z*.

###### Hydrogen-bond geometry (Å, °)

  *D*---H⋯*A*     *D*---H   H⋯*A*   *D*⋯*A*     *D*---H⋯*A*
  --------------- --------- ------- ----------- -------------
  O5---H5⋯O3^i^   0.82      2.18    2.913 (3)   149
  O3---H3⋯O2      0.82      1.91    2.624 (2)   145

Symmetry code: (i) .
