Disodium (2RS,3SR)-tartrate.

The asymmetric unit of the anhydrous title compound, 2Na(+)·C(4)H(4)O(6) (2-), contains two sodium cations and one tartrate anion. Each sodium ion is six coordinate, with bonding to six O atoms from both the carboxyl-ate and hydroxyl groups of the anion. A three-dimensional coordination network is formed with sodium ions stacking in layers along the c-axis direction. This network is supported by additional O-H⋯O hydrogen bonds.

Related literature

For the preparation and structure of the equivalent anhydrous meso-tartrate salt, see: Blankensteyn & Kroon (1985 ▶). For similar hydrated tartrate salt examples using sodium or mixed sodium with lithium, potassium, rubidium or ammonium cations, see: Ambady & Kartha (1968 ▶); Suzuki et al. (1996 ▶); Buschmann & Luger (1985 ▶); Görbitz & Sagstuen (2008 ▶); Hinazumi & Mitsui (1972 ▶). For the use of tartrates as food additives, see: Vickers et al. (2007 ▶).

Experimental

Crystal data

2Na+·C4H4O6 2−

M = 194.06

Orthorhombic,

a = 10.1160 (4) Å

b = 10.0049 (5) Å

c = 13.0821 (5) Å

V = 1324.03 (10) Å3

Z = 8

Mo Kα radiation

μ = 0.29 mm−1

T = 123 K

0.24 × 0.15 × 0.09 mm

Data collection

Oxford Diffraction Gemini S CCD diffractometer

Absorption correction: multi-scan (ABSPACK; Oxford Diffraction, 2007 ▶) T min = 0.894, T max = 1.000

7156 measured reflections

1934 independent reflections

1566 reflections with I > 2/s(I)

R int = 0.024

Refinement

R[F 2 > 2σ(F 2)] = 0.028

wR(F 2) = 0.072

S = 1.05

1934 reflections

117 parameters

H atoms treated by a mixture of independent and constrained refinement

Δρmax = 0.39 e Å−3

Δρmin = −0.31 e Å−3

Data collection: CrysAlis CCD (Oxford Diffraction, 2007 ▶); cell refinement: CrysAlis CCD; data reduction: CrysAlis RED (Oxford Diffraction, 2007 ▶); program(s) used to solve structure: SHELXS97 (Sheldrick, 2008 ▶); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008 ▶); molecular graphics: ORTEP-3 (Farrugia, 1997 ▶); software used to prepare material for publication: SHELXL97.

Crystal structure: contains datablocks global, I. DOI: 10.1107/S1600536809037155/tk2539sup1.cif

Structure factors: contains datablocks I. DOI: 10.1107/S1600536809037155/tk2539Isup2.hkl

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

2Na+·C4H4O62−	F(000) = 784
Mr = 194.06	Dx = 1.947 Mg m−3
Orthorhombic, Pbca	Mo Kα radiation, λ = 0.71073 Å
Hall symbol: -P 2ac 2ab	Cell parameters from 3917 reflections
a = 10.1160 (4) Å	θ = 2.5–30.8°
b = 10.0049 (5) Å	µ = 0.29 mm−1
c = 13.0821 (5) Å	T = 123 K
V = 1324.03 (10) Å3	Block, colourless
Z = 8	0.24 × 0.15 × 0.09 mm

Oxford Diffraction Gemini S CCD diffractometer	1934 independent reflections
Radiation source: fine-focus sealed tube	1566 reflections with I > 2/s(I)
graphite	Rint = 0.024
ω scans	θmax = 30.8°, θmin = 3.1°
Absorption correction: multi-scan (ABSPACK; Oxford Diffraction, 2007)	h = −14→8
Tmin = 0.894, Tmax = 1.000	k = −14→14
7156 measured reflections	l = −17→18

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)] = 0.028	Hydrogen site location: inferred from neighbouring sites
wR(F2) = 0.072	H atoms treated by a mixture of independent and constrained refinement
S = 1.05	w = 1/[σ2(Fo2) + (0.0412P)2] where P = (Fo2 + 2Fc2)/3
1934 reflections	(Δ/σ)max = 0.001
117 parameters	Δρmax = 0.39 e Å−3
0 restraints	Δρmin = −0.31 e Å−3

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
Na1	0.55185 (4)	−0.03963 (5)	−0.37266 (3)	0.01008 (12)
Na2	0.52569 (5)	−0.03323 (5)	0.12690 (3)	0.01163 (12)
O1	0.53147 (9)	−0.24500 (8)	−0.29356 (7)	0.0149 (2)
O2	0.61519 (8)	−0.40740 (8)	−0.19771 (6)	0.01028 (18)
O3	0.66678 (8)	−0.05364 (8)	−0.20387 (6)	0.00958 (17)
O4	0.73339 (8)	−0.01137 (9)	0.05789 (6)	0.01434 (19)
O5	0.89689 (8)	−0.12972 (8)	−0.01024 (6)	0.01052 (18)
O6	0.54400 (8)	−0.15557 (9)	−0.02943 (6)	0.00950 (17)
C1	0.60624 (11)	−0.28543 (11)	−0.22473 (8)	0.0082 (2)
C2	0.69680 (11)	−0.18581 (11)	−0.16939 (8)	0.0078 (2)
H1	0.7910	−0.2069	−0.1859	0.009*
C3	0.67622 (11)	−0.19485 (12)	−0.05305 (8)	0.0082 (2)
H3	0.6900	−0.2894	−0.0306	0.010*
C4	0.77515 (10)	−0.10399 (12)	0.00307 (8)	0.0087 (2)
H2	0.7378 (17)	0.0000 (17)	−0.1980 (13)	0.033 (5)*
H4	0.4958 (17)	−0.2286 (16)	−0.0224 (14)	0.026 (5)*

	U11	U22	U33	U12	U13	U23
Na1	0.0103 (2)	0.0103 (2)	0.0096 (2)	−0.00008 (18)	0.00033 (16)	0.00102 (17)
Na2	0.0123 (2)	0.0126 (2)	0.0100 (2)	0.0033 (2)	0.00156 (16)	0.00156 (17)
O1	0.0174 (4)	0.0114 (4)	0.0158 (4)	−0.0023 (4)	−0.0085 (3)	0.0021 (3)
O2	0.0111 (4)	0.0073 (4)	0.0124 (4)	0.0000 (3)	0.0002 (3)	0.0005 (3)
O3	0.0109 (4)	0.0069 (4)	0.0109 (4)	−0.0012 (3)	−0.0008 (3)	0.0019 (3)
O4	0.0116 (4)	0.0154 (4)	0.0161 (4)	−0.0004 (4)	0.0013 (3)	−0.0077 (3)
O5	0.0078 (3)	0.0112 (4)	0.0125 (4)	0.0004 (3)	0.0002 (3)	0.0009 (3)
O6	0.0074 (4)	0.0097 (4)	0.0114 (4)	−0.0004 (3)	0.0017 (3)	0.0003 (3)
C1	0.0085 (5)	0.0086 (5)	0.0075 (4)	0.0003 (4)	0.0019 (4)	−0.0012 (4)
C2	0.0087 (5)	0.0066 (5)	0.0082 (4)	0.0002 (4)	−0.0003 (4)	0.0002 (4)
C3	0.0073 (5)	0.0081 (5)	0.0092 (4)	0.0009 (4)	0.0000 (4)	0.0001 (4)
C4	0.0100 (5)	0.0092 (5)	0.0069 (5)	−0.0004 (4)	−0.0004 (4)	0.0020 (4)

Na1—O1	2.3097 (10)	O2—C1	1.2737 (14)
Na1—O2i	2.3352 (9)	O2—Na1viii	2.3352 (9)
Na1—O5ii	2.3699 (9)	O2—Na2vii	2.5370 (9)
Na1—O4iii	2.4095 (9)	O3—C2	1.4298 (14)
Na1—O3	2.4994 (9)	O3—Na2iv	2.3580 (9)
Na1—O5iii	2.5257 (9)	O3—H2	0.900 (17)
Na1—C4iii	2.7875 (12)	O4—C4	1.2457 (13)
Na1—Na2iv	3.3886 (6)	O4—Na1ix	2.4095 (9)
Na1—Na1v	3.5820 (8)	O5—C4	1.2701 (13)
Na2—O4	2.2973 (9)	O5—Na1x	2.3699 (9)
Na2—O3iv	2.3580 (9)	O5—Na1ix	2.5257 (9)
Na2—O6iv	2.3856 (9)	O6—C3	1.4279 (13)
Na2—O6	2.3907 (9)	O6—Na2iv	2.3856 (9)
Na2—O1vi	2.4513 (10)	O6—H4	0.883 (17)
Na2—O2vi	2.5370 (9)	C1—C2	1.5352 (16)
Na2—C1vi	2.7790 (12)	C1—Na2vii	2.7790 (12)
Na2—C4	3.0813 (12)	C2—C3	1.5389 (14)
Na2—Na1iv	3.3886 (6)	C2—H1	1.0000
Na2—Na2iv	3.4259 (9)	C3—C4	1.5385 (15)
O1—C1	1.2435 (13)	C3—H3	1.0000
O1—Na2vii	2.4513 (10)	C4—Na1ix	2.7875 (12)
O1—Na1—O2i	105.24 (3)	O6—Na2—Na1iv	160.01 (3)
O1—Na1—O5ii	83.81 (3)	O1vi—Na2—Na1iv	78.32 (2)
O2i—Na1—O5ii	89.52 (3)	O2vi—Na2—Na1iv	43.53 (2)
O1—Na1—O4iii	115.96 (4)	C1vi—Na2—Na1iv	62.98 (3)
O2i—Na1—O4iii	132.93 (4)	C4—Na2—Na1iv	137.55 (3)
O5ii—Na1—O4iii	115.67 (3)	O4—Na2—Na2iv	74.89 (3)
O1—Na1—O3	66.16 (3)	O3iv—Na2—Na2iv	102.54 (3)
O2i—Na1—O3	91.15 (3)	O6iv—Na2—Na2iv	44.23 (2)
O5ii—Na1—O3	149.03 (3)	O6—Na2—Na2iv	44.11 (2)
O4iii—Na1—O3	85.73 (3)	O1vi—Na2—Na2iv	126.20 (3)
O1—Na1—O5iii	159.12 (4)	O2vi—Na2—Na2iv	167.44 (3)
O2i—Na1—O5iii	92.83 (3)	C1vi—Na2—Na2iv	148.01 (3)
O5ii—Na1—O5iii	86.00 (3)	C4—Na2—Na2iv	70.08 (2)
O4iii—Na1—O5iii	53.42 (3)	Na1iv—Na2—Na2iv	147.42 (2)
O3—Na1—O5iii	124.87 (3)	C1—O1—Na1	124.02 (7)
O1—Na1—C4iii	140.88 (4)	C1—O1—Na2vii	91.57 (7)
O2i—Na1—C4iii	113.09 (4)	Na1—O1—Na2vii	128.11 (4)
O5ii—Na1—C4iii	103.55 (3)	C1—O2—Na1viii	126.92 (7)
O4iii—Na1—C4iii	26.47 (3)	C1—O2—Na2vii	87.02 (6)
O3—Na1—C4iii	104.60 (3)	Na1viii—O2—Na2vii	88.03 (3)
O5iii—Na1—C4iii	27.09 (3)	C2—O3—Na2iv	112.43 (6)
O1—Na1—Na2iv	75.27 (3)	C2—O3—Na1	115.43 (6)
O2i—Na1—Na2iv	48.44 (2)	Na2iv—O3—Na1	88.42 (3)
O5ii—Na1—Na2iv	122.82 (3)	C2—O3—H2	110.8 (11)
O4iii—Na1—Na2iv	121.39 (3)	Na2iv—O3—H2	113.8 (11)
O3—Na1—Na2iv	44.07 (2)	Na1—O3—H2	114.4 (11)
O5iii—Na1—Na2iv	125.40 (3)	C4—O4—Na2	117.75 (7)
C4iii—Na1—Na2iv	126.00 (3)	C4—O4—Na1ix	93.95 (7)
O1—Na1—Na1v	125.98 (3)	Na2—O4—Na1ix	134.16 (4)
O2i—Na1—Na1v	91.68 (3)	C4—O5—Na1x	130.76 (7)
O5ii—Na1—Na1v	44.70 (2)	C4—O5—Na1ix	88.02 (7)
O4iii—Na1—Na1v	82.32 (2)	Na1x—O5—Na1ix	94.00 (3)
O3—Na1—Na1v	166.03 (3)	C3—O6—Na2iv	112.27 (6)
O5iii—Na1—Na1v	41.30 (2)	C3—O6—Na2	113.49 (6)
C4iii—Na1—Na1v	61.79 (2)	Na2iv—O6—Na2	91.66 (3)
Na2iv—Na1—Na1v	140.09 (2)	C3—O6—H4	108.1 (11)
O4—Na2—O3iv	152.61 (4)	Na2iv—O6—H4	123.2 (11)
O4—Na2—O6iv	89.13 (3)	Na2—O6—H4	107.0 (12)
O3iv—Na2—O6iv	72.09 (3)	O1—C1—O2	123.77 (10)
O4—Na2—O6	69.00 (3)	O1—C1—C2	119.55 (10)
O3iv—Na2—O6	128.17 (3)	O2—C1—C2	116.66 (9)
O6iv—Na2—O6	88.34 (3)	O1—C1—Na2vii	61.86 (6)
O4—Na2—O1vi	103.37 (3)	O2—C1—Na2vii	65.74 (6)
O3iv—Na2—O1vi	99.91 (3)	C2—C1—Na2vii	158.15 (7)
O6iv—Na2—O1vi	161.92 (4)	O3—C2—C1	108.96 (9)
O6—Na2—O1vi	84.14 (3)	O3—C2—C3	109.73 (9)
O4—Na2—O2vi	92.94 (3)	C1—C2—C3	110.33 (9)
O3iv—Na2—O2vi	89.70 (3)	O3—C2—H1	109.3
O6iv—Na2—O2vi	140.73 (3)	C1—C2—H1	109.3
O6—Na2—O2vi	128.77 (3)	C3—C2—H1	109.3
O1vi—Na2—O2vi	52.82 (3)	O6—C3—C4	110.09 (9)
O4—Na2—C1vi	93.93 (3)	O6—C3—C2	108.94 (8)
O3iv—Na2—C1vi	100.63 (3)	C4—C3—C2	110.44 (9)
O6iv—Na2—C1vi	167.66 (4)	O6—C3—H3	109.1
O6—Na2—C1vi	103.92 (4)	C4—C3—H3	109.1
O1vi—Na2—C1vi	26.57 (3)	C2—C3—H3	109.1
O2vi—Na2—C1vi	27.24 (3)	O4—C4—O5	123.96 (10)
O4—Na2—C4	20.96 (3)	O4—C4—C3	119.58 (10)
O3iv—Na2—C4	170.22 (3)	O5—C4—C3	116.46 (10)
O6iv—Na2—C4	98.22 (3)	O4—C4—Na1ix	59.58 (6)
O6—Na2—C4	50.89 (3)	O5—C4—Na1ix	64.89 (6)
O1vi—Na2—C4	89.75 (3)	C3—C4—Na1ix	172.43 (7)
O2vi—Na2—C4	97.44 (3)	O4—C4—Na2	41.28 (5)
C1vi—Na2—C4	88.69 (3)	O5—C4—Na2	155.89 (7)
O4—Na2—Na1iv	124.34 (3)	C3—C4—Na2	81.60 (6)
O3iv—Na2—Na1iv	47.50 (2)	Na1ix—C4—Na2	95.11 (3)
O6iv—Na2—Na1iv	105.57 (3)
O2i—Na1—O1—C1	−103.88 (9)	Na2iv—O3—C2—C1	78.38 (8)
O5ii—Na1—O1—C1	168.31 (9)	Na1—O3—C2—C1	−21.02 (10)
O4iii—Na1—O1—C1	52.72 (10)	Na2iv—O3—C2—C3	−42.52 (10)
O3—Na1—O1—C1	−19.48 (9)	Na1—O3—C2—C3	−141.92 (7)
O5iii—Na1—O1—C1	107.05 (12)	O1—C1—C2—O3	5.65 (14)
C4iii—Na1—O1—C1	64.41 (11)	O2—C1—C2—O3	−175.83 (9)
Na2iv—Na1—O1—C1	−65.38 (9)	Na2vii—C1—C2—O3	93.2 (2)
Na1v—Na1—O1—C1	152.51 (8)	O1—C1—C2—C3	126.19 (11)
O2i—Na1—O1—Na2vii	131.26 (5)	O2—C1—C2—C3	−55.30 (13)
O5ii—Na1—O1—Na2vii	43.45 (5)	Na2vii—C1—C2—C3	−146.27 (17)
O4iii—Na1—O1—Na2vii	−72.13 (6)	Na2iv—O6—C3—C4	80.01 (8)
O3—Na1—O1—Na2vii	−144.34 (6)	Na2—O6—C3—C4	−22.24 (10)
O5iii—Na1—O1—Na2vii	−17.81 (13)	Na2iv—O6—C3—C2	−41.23 (10)
C4iii—Na1—O1—Na2vii	−60.45 (7)	Na2—O6—C3—C2	−143.48 (7)
Na2iv—Na1—O1—Na2vii	169.76 (5)	O3—C2—C3—O6	56.23 (12)
Na1v—Na1—O1—Na2vii	27.65 (7)	C1—C2—C3—O6	−63.83 (12)
O1—Na1—O3—C2	20.93 (7)	O3—C2—C3—C4	−64.79 (11)
O2i—Na1—O3—C2	127.10 (7)	C1—C2—C3—C4	175.14 (9)
O5ii—Na1—O3—C2	36.12 (11)	Na2—O4—C4—O5	−154.27 (9)
O4iii—Na1—O3—C2	−99.92 (7)	Na1ix—O4—C4—O5	−8.65 (11)
O5iii—Na1—O3—C2	−138.64 (7)	Na2—O4—C4—C3	25.69 (12)
C4iii—Na1—O3—C2	−118.66 (7)	Na1ix—O4—C4—C3	171.31 (8)
Na2iv—Na1—O3—C2	114.18 (8)	Na2—O4—C4—Na1ix	−145.62 (7)
Na1v—Na1—O3—C2	−131.23 (13)	Na1ix—O4—C4—Na2	145.62 (7)
O1—Na1—O3—Na2iv	−93.25 (4)	Na1x—O5—C4—O4	−85.34 (13)
O2i—Na1—O3—Na2iv	12.92 (3)	Na1ix—O5—C4—O4	8.23 (11)
O5ii—Na1—O3—Na2iv	−78.06 (7)	Na1x—O5—C4—C3	94.70 (11)
O4iii—Na1—O3—Na2iv	145.90 (3)	Na1ix—O5—C4—C3	−171.72 (8)
O5iii—Na1—O3—Na2iv	107.18 (4)	Na1x—O5—C4—Na1ix	−93.57 (8)
C4iii—Na1—O3—Na2iv	127.16 (3)	Na1x—O5—C4—Na2	−129.86 (16)
Na1v—Na1—O3—Na2iv	114.59 (13)	Na1ix—O5—C4—Na2	−36.3 (2)
O3iv—Na2—O4—C4	−161.78 (8)	O6—C3—C4—O4	−1.01 (13)
O6iv—Na2—O4—C4	−116.05 (8)	C2—C3—C4—O4	119.33 (11)
O6—Na2—O4—C4	−27.50 (7)	O6—C3—C4—O5	178.95 (9)
O1vi—Na2—O4—C4	50.75 (8)	C2—C3—C4—O5	−60.71 (13)
O2vi—Na2—O4—C4	103.18 (8)	O6—C3—C4—Na1ix	80.5 (6)
C1vi—Na2—O4—C4	75.91 (8)	C2—C3—C4—Na1ix	−159.2 (5)
Na1iv—Na2—O4—C4	135.61 (7)	O6—C3—C4—Na2	15.80 (7)
Na2iv—Na2—O4—C4	−73.63 (7)	C2—C3—C4—Na2	136.14 (8)
O3iv—Na2—O4—Na1ix	69.96 (10)	O3iv—Na2—C4—O4	57.9 (2)
O6iv—Na2—O4—Na1ix	115.68 (6)	O6iv—Na2—C4—O4	65.18 (8)
O6—Na2—O4—Na1ix	−155.76 (6)	O6—Na2—C4—O4	146.25 (9)
O1vi—Na2—O4—Na1ix	−77.51 (6)	O1vi—Na2—C4—O4	−131.11 (8)
O2vi—Na2—O4—Na1ix	−25.08 (6)	O2vi—Na2—C4—O4	−78.70 (8)
C1vi—Na2—O4—Na1ix	−52.35 (6)	C1vi—Na2—C4—O4	−104.56 (8)
C4—Na2—O4—Na1ix	−128.26 (11)	Na1iv—Na2—C4—O4	−58.85 (9)
Na1iv—Na2—O4—Na1ix	7.34 (7)	Na2iv—Na2—C4—O4	99.85 (8)
Na2iv—Na2—O4—Na1ix	158.11 (6)	O4—Na2—C4—O5	61.8 (2)
O4—Na2—O6—C3	25.51 (7)	O3iv—Na2—C4—O5	119.7 (2)
O3iv—Na2—O6—C3	−179.25 (7)	O6iv—Na2—C4—O5	127.0 (2)
O6iv—Na2—O6—C3	115.22 (8)	O6—Na2—C4—O5	−151.9 (2)
O1vi—Na2—O6—C3	−81.24 (7)	O1vi—Na2—C4—O5	−69.3 (2)
O2vi—Na2—O6—C3	−50.74 (9)	O2vi—Na2—C4—O5	−16.9 (2)
C1vi—Na2—O6—C3	−63.37 (8)	C1vi—Na2—C4—O5	−42.7 (2)
C4—Na2—O6—C3	13.22 (7)	Na1iv—Na2—C4—O5	3.0 (2)
Na1iv—Na2—O6—C3	−109.91 (9)	Na2iv—Na2—C4—O5	161.7 (2)
Na2iv—Na2—O6—C3	115.22 (8)	O4—Na2—C4—C3	−157.60 (11)
O4—Na2—O6—Na2iv	−89.70 (3)	O3iv—Na2—C4—C3	−99.7 (2)
O3iv—Na2—O6—Na2iv	65.53 (4)	O6iv—Na2—C4—C3	−92.43 (6)
O6iv—Na2—O6—Na2iv	0.0	O6—Na2—C4—C3	−11.35 (6)
O1vi—Na2—O6—Na2iv	163.54 (4)	O1vi—Na2—C4—C3	71.29 (6)
O2vi—Na2—O6—Na2iv	−165.95 (4)	O2vi—Na2—C4—C3	123.70 (6)
C1vi—Na2—O6—Na2iv	−178.59 (4)	C1vi—Na2—C4—C3	97.84 (6)
C4—Na2—O6—Na2iv	−102.00 (4)	Na1iv—Na2—C4—C3	143.55 (5)
Na1iv—Na2—O6—Na2iv	134.88 (8)	Na2iv—Na2—C4—C3	−57.75 (5)
Na1—O1—C1—O2	−163.11 (8)	O4—Na2—C4—Na1ix	29.27 (7)
Na2vii—O1—C1—O2	−23.34 (11)	O3iv—Na2—C4—Na1ix	87.1 (2)
Na1—O1—C1—C2	15.30 (14)	O6iv—Na2—C4—Na1ix	94.44 (4)
Na2vii—O1—C1—C2	155.06 (9)	O6—Na2—C4—Na1ix	175.52 (5)
Na1—O1—C1—Na2vii	−139.77 (8)	O1vi—Na2—C4—Na1ix	−101.84 (3)
Na1viii—O2—C1—O1	−62.75 (14)	O2vi—Na2—C4—Na1ix	−49.43 (4)
Na2vii—O2—C1—O1	22.53 (11)	C1vi—Na2—C4—Na1ix	−75.29 (4)
Na1viii—O2—C1—C2	118.80 (9)	Na1iv—Na2—C4—Na1ix	−29.59 (5)
Na2vii—O2—C1—C2	−155.91 (9)	Na2iv—Na2—C4—Na1ix	129.12 (3)
Na1viii—O2—C1—Na2vii	−85.29 (7)

D—H···A	D—H	H···A	D···A	D—H···A
O3—H2···O2xi	0.900 (17)	1.752 (18)	2.6480 (12)	173.2 (17)
O6—H4···O5xii	0.883 (17)	1.787 (17)	2.6643 (12)	172.0 (18)

Table 1

Hydrogen-bond geometry (Å, °)

D—H⋯A	D—H	H⋯A	D⋯A	D—H⋯A
O3—H2⋯O2i	0.900 (17)	1.752 (18)	2.6480 (12)	173.2 (17)
O6—H4⋯O5ii	0.883 (17)	1.787 (17)	2.6643 (12)	172.0 (18)

Symmetry codes: (i) ; (ii) .