metal-organic compounds
Sodium (1R,2S,5S)-2-hydroxy-6,6-dimethylbicyclo[3.1.1]heptane-2-carboxylate pentahydrate
aDepartment of Chemistry, Taishan University, 271021 Taian, Shandong, People's Republic of China, and bDepartment of Materials and Chemical Engineering, Taishan University, 271021 Taian, Shandong, People's Republic of China
*Correspondence e-mail: mashy910@163.com
In the title compound, Na+·C10H15O3−·5H2O, the vertices of a distorted octahedron centred on the Na+ cation are defined by six O atoms of water molecules. The edge-sharing Na(H2O)6 octahedra form a chain extended along the b-axis direction with adjacent Na+ cations related by a twofold screw The organic anion, which is not in close contact with the Na+ cation, is hydrogen-bonded to an uncoordinated water molecule and to water molecules of the Na(H2O)6 octahedra.
Experimental
Crystal data
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Refinement
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Data collection: SMART (Siemens, 1996); cell SAINT (Siemens, 1996); data reduction: SAINT; program(s) used to solve structure: SHELXS97 (Sheldrick, 1997a); program(s) used to refine structure: SHELXL97 (Sheldrick, 1997a); molecular graphics: SHELXTL (Sheldrick, 1997b); software used to prepare material for publication: SHELXTL.
Supporting information
https://doi.org/10.1107/S1600536807063775/gk2115sup1.cif
contains datablocks global, I. DOI:Structure factors: contains datablock I. DOI: https://doi.org/10.1107/S1600536807063775/gk2115Isup2.hkl
Potassium permanganate (0.03 mol) and NaOH (0.015 mol) were dissolved in the mixture of water (21 ml) and t-butylalcohol (9 ml).While stirring vigorously, β-pinene (0.01 mol) was dropped. The reaction mixture was maintained during 1 to 2 h at temperature of 283–293 K. The reaction was completed when the potassium permanganate reacted completely. The mixture was heated to 353 K,then filtered and the precipitate was washed with hot water. The filtrate was concentrated under vacuum to a volume of 10 ml. After standing for one night in refrigerator the product, sodium nopinate, was filtered and washed with ice water. The crude sodium nopinate was recrystallized from water. Analysis calculated for C10H15O3Na: C 58.25, H 7.28, Na11.17%; found: C 58.23, H 7.25, N 11.15%. Crystals of (I) suitable for single-crystal X-ray analysis were selected directly from the sample after recrystallization.
(-)-In the absence of signifcant
effects, Friedel pairs were averaged. The of atoms C2, C3 and C5 were assigned from the known hand of the starting material.The H-atoms were included in the riding-model approximation with C—H = 0.96–0.98 Å and O—H = 0.82 Å (O-hydroxy) and 0.85 Å (O-water), and with Uiso(H) = 1.2 or 1.5 Ueq(C) and Uiso(H) = 1.5 (O-hydroxy) or 1.2 (O-water) Ueq(O). Friedel pairs were merged for the process.Sodium nopinate is an intermediate in the synthesis of nopinic acid. Hydroxyalkylamino salts of nopinic acid are new compounds useful in pharmaceutical compositions for alleviating ulcer conditions. In the course of synthesis of nopinic acid the crystal of sodium nopinate pentahydrate (I) was obtained in its crystallographic data are reported here (Fig.1). In the title compound the vertices of a distorted octahedron centred on Na+ cation are defined by six O atoms of water molecules. The edge-sharing Na(H2O)6 octahedra form a chain extended along the b axis with the adjacent Na+ cations related by twofold screw axis symmetry. Similar chains were observed in sodium pyridine-4-carboxylate tetrahydrate (Huang et al., 2005).
For a
with similar chains of edge-sharing Na(H2O)6 octahedra, see: Huang et al. (2005).Data collection: SMART (Siemens, 1996); cell
SMART (Siemens, 1996; data reduction: SAINT (Siemens, 1996); program(s) used to solve structure: SHELXS97 (Sheldrick, 1997a); program(s) used to refine structure: SHELXL97 (Sheldrick, 1997a); molecular graphics: SHELXTL (Sheldrick, 1997b); software used to prepare material for publication: SHELXTL (Sheldrick, 1997b).Fig. 1. The molecular structure of the title compound with displacement ellipsoids drawn at the 50% probability level. H atoms are omitted and only asymmetric unit is labelled. |
Na+·C10H15O3−·5H2O | F(000) = 320 |
Mr = 296.29 | Dx = 1.280 Mg m−3 |
Monoclinic, P21 | Melting point: 350 K |
Hall symbol: P 2yb | Mo Kα radiation, λ = 0.71073 Å |
a = 6.647 (3) Å | Cell parameters from 1420 reflections |
b = 6.976 (3) Å | θ = 3.1–22.4° |
c = 16.608 (7) Å | µ = 0.13 mm−1 |
β = 93.037 (7)° | T = 295 K |
V = 769.0 (6) Å3 | Block, colourless |
Z = 2 | 0.15 × 0.12 × 0.10 mm |
Bruker SMART CCD area-detector diffractometer | 1479 independent reflections |
Radiation source: fine-focus sealed tube | 1284 reflections with I > 2σ(I) |
Graphite monochromator | Rint = 0.039 |
φ and ω scans | θmax = 25.1°, θmin = 2.5° |
Absorption correction: multi-scan (SADABS; Sheldrick, 1996) | h = −7→7 |
Tmin = 0.981, Tmax = 0.987 | k = −5→8 |
4017 measured reflections | l = −16→19 |
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)] = 0.042 | Hydrogen site location: inferred from neighbouring sites |
wR(F2) = 0.107 | H-atom parameters constrained |
S = 1.03 | w = 1/[σ2(Fo2) + (0.069P)2 + 0.001P] where P = (Fo2 + 2Fc2)/3 |
1479 reflections | (Δ/σ)max < 0.001 |
173 parameters | Δρmax = 0.21 e Å−3 |
0 restraints | Δρmin = −0.24 e Å−3 |
Na+·C10H15O3−·5H2O | V = 769.0 (6) Å3 |
Mr = 296.29 | Z = 2 |
Monoclinic, P21 | Mo Kα radiation |
a = 6.647 (3) Å | µ = 0.13 mm−1 |
b = 6.976 (3) Å | T = 295 K |
c = 16.608 (7) Å | 0.15 × 0.12 × 0.10 mm |
β = 93.037 (7)° |
Bruker SMART CCD area-detector diffractometer | 1479 independent reflections |
Absorption correction: multi-scan (SADABS; Sheldrick, 1996) | 1284 reflections with I > 2σ(I) |
Tmin = 0.981, Tmax = 0.987 | Rint = 0.039 |
4017 measured reflections |
R[F2 > 2σ(F2)] = 0.042 | 0 restraints |
wR(F2) = 0.107 | H-atom parameters constrained |
S = 1.03 | Δρmax = 0.21 e Å−3 |
1479 reflections | Δρmin = −0.24 e Å−3 |
173 parameters |
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 | −0.00585 (18) | 0.5552 (2) | 1.00549 (8) | 0.0409 (3) | |
O1 | 0.6546 (3) | 0.2810 (4) | 0.82272 (12) | 0.0526 (6) | |
O2 | 0.3527 (3) | 0.4065 (3) | 0.83467 (12) | 0.0430 (6) | |
O3 | 0.3247 (3) | −0.0018 (3) | 0.77372 (14) | 0.0440 (6) | |
H3 | 0.2070 | 0.0084 | 0.7855 | 0.066* | |
O4 | −0.0358 (3) | 0.5789 (4) | 0.85286 (14) | 0.0507 (6) | |
H9 | −0.1268 | 0.4968 | 0.8404 | 0.061* | |
H10 | 0.0723 | 0.5321 | 0.8360 | 0.061* | |
O5 | −0.2377 (3) | 0.3046 (4) | 0.98716 (11) | 0.0426 (5) | |
H11 | −0.2909 | 0.2932 | 0.9397 | 0.051* | |
H12 | −0.3323 | 0.2808 | 1.0182 | 0.051* | |
O6 | 0.2300 (3) | 0.3093 (4) | 0.98658 (11) | 0.0417 (5) | |
H13 | 0.2944 | 0.3309 | 0.9446 | 0.050* | |
H14 | 0.3195 | 0.2885 | 1.0240 | 0.050* | |
O7 | 0.0435 (3) | 0.4926 (3) | 1.15078 (13) | 0.0474 (6) | |
H15 | 0.0819 | 0.3783 | 1.1605 | 0.057* | |
H16 | 0.1382 | 0.5627 | 1.1707 | 0.057* | |
O8 | 0.4976 (3) | 0.7554 (3) | 0.88678 (12) | 0.0493 (6) | |
H17 | 0.4586 | 0.6483 | 0.8672 | 0.059* | |
H18 | 0.4541 | 0.8403 | 0.8536 | 0.059* | |
C1 | 0.4727 (4) | 0.2977 (5) | 0.80066 (15) | 0.0352 (6) | |
C2 | 0.3845 (5) | 0.1694 (4) | 0.73196 (18) | 0.0356 (7) | |
C3 | 0.2004 (4) | 0.2543 (5) | 0.68807 (17) | 0.0384 (7) | |
H3A | 0.0894 | 0.2849 | 0.7224 | 0.046* | |
C4 | 0.1419 (5) | 0.1285 (6) | 0.6148 (2) | 0.0527 (9) | |
H4A | 0.1791 | −0.0053 | 0.6212 | 0.063* | |
H4B | 0.0028 | 0.1423 | 0.5948 | 0.063* | |
C5 | 0.2921 (5) | 0.2488 (6) | 0.56934 (18) | 0.0541 (10) | |
H5 | 0.2527 | 0.2741 | 0.5126 | 0.065* | |
C6 | 0.4990 (6) | 0.1655 (7) | 0.58425 (18) | 0.0586 (11) | |
H6A | 0.5982 | 0.2592 | 0.5692 | 0.070* | |
H6B | 0.5124 | 0.0540 | 0.5501 | 0.070* | |
C7 | 0.5440 (5) | 0.1063 (5) | 0.67306 (18) | 0.0451 (8) | |
H7A | 0.5565 | −0.0321 | 0.6755 | 0.054* | |
H7B | 0.6730 | 0.1603 | 0.6913 | 0.054* | |
C8 | 0.2550 (5) | 0.4173 (5) | 0.62814 (18) | 0.0463 (8) | |
C9 | 0.4265 (6) | 0.5520 (6) | 0.6499 (2) | 0.0581 (9) | |
H9A | 0.3882 | 0.6371 | 0.6919 | 0.087* | |
H9B | 0.4581 | 0.6253 | 0.6033 | 0.087* | |
H9C | 0.5426 | 0.4794 | 0.6685 | 0.087* | |
C10 | 0.0681 (7) | 0.5319 (7) | 0.6031 (3) | 0.0742 (12) | |
H10A | 0.0984 | 0.6187 | 0.5605 | 0.111* | |
H10B | 0.0250 | 0.6035 | 0.6485 | 0.111* | |
H10C | −0.0373 | 0.4462 | 0.5845 | 0.111* |
U11 | U22 | U33 | U12 | U13 | U23 | |
Na1 | 0.0433 (6) | 0.0359 (7) | 0.0437 (6) | 0.0011 (5) | 0.0047 (4) | −0.0013 (6) |
O1 | 0.0472 (12) | 0.0610 (16) | 0.0483 (12) | 0.0079 (13) | −0.0090 (9) | −0.0138 (12) |
O2 | 0.0484 (12) | 0.0462 (14) | 0.0348 (11) | 0.0040 (11) | 0.0068 (9) | −0.0075 (10) |
O3 | 0.0505 (13) | 0.0341 (13) | 0.0482 (13) | 0.0017 (10) | 0.0094 (10) | 0.0087 (10) |
O4 | 0.0494 (12) | 0.0487 (15) | 0.0547 (13) | 0.0013 (12) | 0.0076 (10) | −0.0040 (12) |
O5 | 0.0366 (10) | 0.0505 (13) | 0.0409 (10) | −0.0013 (12) | 0.0025 (8) | 0.0008 (12) |
O6 | 0.0373 (10) | 0.0504 (13) | 0.0378 (10) | 0.0015 (11) | 0.0056 (8) | 0.0033 (12) |
O7 | 0.0507 (13) | 0.0440 (15) | 0.0478 (13) | −0.0012 (11) | 0.0050 (10) | −0.0024 (11) |
O8 | 0.0604 (13) | 0.0484 (16) | 0.0381 (11) | −0.0009 (12) | −0.0061 (9) | −0.0015 (11) |
C1 | 0.0416 (15) | 0.0360 (16) | 0.0282 (13) | 0.0043 (16) | 0.0039 (11) | 0.0026 (15) |
C2 | 0.0421 (16) | 0.0299 (17) | 0.0352 (15) | −0.0014 (13) | 0.0051 (12) | 0.0011 (13) |
C3 | 0.0433 (15) | 0.038 (2) | 0.0336 (14) | −0.0013 (14) | 0.0033 (11) | 0.0007 (14) |
C4 | 0.059 (2) | 0.053 (2) | 0.0450 (19) | −0.0102 (18) | −0.0072 (15) | −0.0052 (17) |
C5 | 0.073 (2) | 0.062 (3) | 0.0261 (15) | −0.011 (2) | 0.0004 (14) | −0.0043 (17) |
C6 | 0.070 (2) | 0.072 (3) | 0.0349 (17) | −0.006 (2) | 0.0152 (16) | −0.0166 (18) |
C7 | 0.0505 (17) | 0.047 (2) | 0.0384 (17) | 0.0018 (16) | 0.0111 (14) | −0.0071 (15) |
C8 | 0.064 (2) | 0.041 (2) | 0.0325 (16) | −0.0047 (18) | −0.0039 (15) | 0.0069 (15) |
C9 | 0.093 (2) | 0.044 (2) | 0.0376 (17) | −0.016 (2) | 0.0028 (16) | 0.0096 (17) |
C10 | 0.101 (3) | 0.062 (3) | 0.058 (2) | 0.018 (3) | −0.014 (2) | 0.010 (2) |
Na1—O5 | 2.340 (3) | C2—C7 | 1.544 (4) |
Na1—O6 | 2.356 (3) | C3—C4 | 1.534 (5) |
Na1—O7 | 2.457 (3) | C3—C8 | 1.566 (4) |
Na1—O4 | 2.538 (3) | C3—H3A | 0.9800 |
Na1—Na1i | 3.4939 (15) | C4—C5 | 1.533 (5) |
Na1—Na1ii | 3.4939 (15) | C4—H4A | 0.9700 |
O1—C1 | 1.250 (3) | C4—H4B | 0.9700 |
O2—C1 | 1.257 (4) | C5—C6 | 1.502 (5) |
O3—C2 | 1.447 (4) | C5—C8 | 1.556 (5) |
O3—H3 | 0.8200 | C5—H5 | 0.9800 |
O4—H9 | 0.8500 | C6—C7 | 1.545 (5) |
O4—H10 | 0.8500 | C6—H6A | 0.9700 |
O5—Na1i | 2.375 (3) | C6—H6B | 0.9700 |
O5—H11 | 0.8500 | C7—H7A | 0.9700 |
O5—H12 | 0.8499 | C7—H7B | 0.9700 |
O6—Na1i | 2.324 (3) | C8—C9 | 1.507 (5) |
O6—H13 | 0.8500 | C8—C10 | 1.517 (6) |
O6—H14 | 0.8499 | C9—H9A | 0.9600 |
O7—H15 | 0.8500 | C9—H9B | 0.9600 |
O7—H16 | 0.8501 | C9—H9C | 0.9600 |
O8—H17 | 0.8499 | C10—H10A | 0.9600 |
O8—H18 | 0.8498 | C10—H10B | 0.9600 |
C1—C2 | 1.541 (4) | C10—H10C | 0.9600 |
C2—C3 | 1.512 (4) | ||
O6ii—Na1—O5 | 99.06 (9) | O3—C2—C7 | 106.5 (3) |
O5—Na1—O6 | 82.94 (9) | C3—C2—C7 | 111.8 (3) |
O6ii—Na1—O5ii | 82.86 (9) | C1—C2—C7 | 112.8 (3) |
O6—Na1—O5ii | 94.79 (9) | C2—C3—C4 | 108.8 (3) |
O6ii—Na1—O7 | 97.62 (9) | C2—C3—C8 | 112.5 (2) |
O5—Na1—O7 | 92.74 (9) | C4—C3—C8 | 88.2 (2) |
O6—Na1—O7 | 86.92 (8) | C2—C3—H3A | 114.8 |
O5ii—Na1—O7 | 91.40 (9) | C4—C3—H3A | 114.8 |
O6ii—Na1—O4 | 89.44 (9) | C8—C3—H3A | 114.8 |
O5—Na1—O4 | 84.40 (9) | C5—C4—C3 | 86.2 (3) |
O6—Na1—O4 | 86.10 (9) | C5—C4—H4A | 114.3 |
O5ii—Na1—O4 | 91.19 (9) | C3—C4—H4A | 114.3 |
O7—Na1—O4 | 172.73 (11) | C5—C4—H4B | 114.3 |
O6ii—Na1—Na1i | 141.31 (8) | C3—C4—H4B | 114.3 |
O5—Na1—Na1i | 42.58 (6) | H4A—C4—H4B | 111.4 |
O6—Na1—Na1i | 41.36 (6) | C6—C5—C4 | 108.8 (3) |
O5ii—Na1—Na1i | 135.80 (8) | C6—C5—C8 | 111.3 (3) |
O7—Na1—Na1i | 82.63 (8) | C4—C5—C8 | 88.6 (3) |
O4—Na1—Na1i | 90.79 (8) | C6—C5—H5 | 115.1 |
O6ii—Na1—Na1ii | 42.06 (6) | C4—C5—H5 | 115.1 |
O5—Na1—Na1ii | 139.07 (8) | C8—C5—H5 | 115.1 |
O6—Na1—Na1ii | 134.67 (9) | C5—C6—C7 | 113.0 (3) |
O5ii—Na1—Na1ii | 41.80 (6) | C5—C6—H6A | 109.0 |
O7—Na1—Na1ii | 103.09 (8) | C7—C6—H6A | 109.0 |
O4—Na1—Na1ii | 83.32 (8) | C5—C6—H6B | 109.0 |
Na1i—Na1—Na1ii | 173.37 (8) | C7—C6—H6B | 109.0 |
C2—O3—H3 | 109.5 | H6A—C6—H6B | 107.8 |
Na1—O4—H9 | 102.5 | C2—C7—C6 | 115.1 (3) |
Na1—O4—H10 | 106.3 | C2—C7—H7A | 108.5 |
H9—O4—H10 | 105.3 | C6—C7—H7A | 108.5 |
Na1—O5—H11 | 115.4 | C2—C7—H7B | 108.5 |
Na1i—O5—H11 | 103.2 | C6—C7—H7B | 108.5 |
Na1—O5—H12 | 124.7 | H7A—C7—H7B | 107.5 |
Na1i—O5—H12 | 110.5 | C9—C8—C10 | 109.6 (3) |
H11—O5—H12 | 105.0 | C9—C8—C5 | 118.6 (3) |
Na1i—O6—H13 | 122.3 | C10—C8—C5 | 112.4 (3) |
Na1—O6—H13 | 110.3 | C9—C8—C3 | 119.9 (3) |
Na1i—O6—H14 | 104.7 | C10—C8—C3 | 110.1 (3) |
Na1—O6—H14 | 118.1 | C5—C8—C3 | 84.3 (2) |
H13—O6—H14 | 105.5 | C8—C9—H9A | 109.5 |
Na1—O7—H15 | 112.1 | C8—C9—H9B | 109.5 |
Na1—O7—H16 | 109.8 | H9A—C9—H9B | 109.5 |
H15—O7—H16 | 104.8 | C8—C9—H9C | 109.5 |
H17—O8—H18 | 106.1 | H9A—C9—H9C | 109.5 |
O1—C1—O2 | 123.5 (3) | H9B—C9—H9C | 109.5 |
O1—C1—O2 | 123.5 (3) | C8—C10—H10A | 109.5 |
O1—C1—C2 | 119.1 (3) | C8—C10—H10B | 109.5 |
O2—C1—C2 | 117.2 (2) | H10A—C10—H10B | 109.5 |
O2—C1—C2 | 117.2 (2) | C8—C10—H10C | 109.5 |
O3—C2—C3 | 108.6 (2) | H10A—C10—H10C | 109.5 |
O3—C2—C1 | 103.2 (2) | H10B—C10—H10C | 109.5 |
C3—C2—C1 | 113.3 (3) | ||
O6ii—Na1—O5—Na1i | −174.16 (10) | C1—C2—C3—C8 | 76.8 (3) |
O6—Na1—O5—Na1i | 10.56 (7) | C7—C2—C3—C8 | −52.0 (4) |
O7—Na1—O5—Na1i | −76.00 (9) | C2—C3—C4—C5 | −86.5 (3) |
O4—Na1—O5—Na1i | 97.30 (9) | C8—C3—C4—C5 | 26.7 (3) |
Na1ii—Na1—O5—Na1i | 170.35 (13) | C3—C4—C5—C6 | 85.2 (3) |
O5—Na1—O6—Na1i | −10.82 (7) | C3—C4—C5—C8 | −26.9 (2) |
O5ii—Na1—O6—Na1i | 173.48 (10) | C4—C5—C6—C7 | −42.5 (4) |
O7—Na1—O6—Na1i | 82.33 (9) | C8—C5—C6—C7 | 53.6 (4) |
O4—Na1—O6—Na1i | −95.64 (9) | O3—C2—C7—C6 | 126.2 (3) |
Na1ii—Na1—O6—Na1i | −172.26 (12) | C3—C2—C7—C6 | 7.8 (4) |
O2—O2—C1—O1 | 0.0 (7) | C1—C2—C7—C6 | −121.3 (3) |
O2—O2—C1—C2 | 0.0 (6) | C5—C6—C7—C2 | −8.5 (5) |
O1—C1—C2—O3 | 87.1 (3) | C6—C5—C8—C9 | 37.7 (4) |
O2—C1—C2—O3 | −88.8 (3) | C4—C5—C8—C9 | 147.3 (3) |
O2—C1—C2—O3 | −88.8 (3) | C6—C5—C8—C10 | 167.4 (3) |
O1—C1—C2—C3 | −155.6 (3) | C4—C5—C8—C10 | −83.0 (4) |
O2—C1—C2—C3 | 28.4 (4) | C6—C5—C8—C3 | −83.3 (3) |
O2—C1—C2—C3 | 28.4 (4) | C4—C5—C8—C3 | 26.3 (2) |
O1—C1—C2—C7 | −27.4 (4) | C2—C3—C8—C9 | −36.5 (4) |
O2—C1—C2—C7 | 156.7 (3) | C4—C3—C8—C9 | −146.1 (3) |
O2—C1—C2—C7 | 156.7 (3) | C2—C3—C8—C10 | −164.9 (3) |
O3—C2—C3—C4 | −73.2 (3) | C4—C3—C8—C10 | 85.4 (3) |
C1—C2—C3—C4 | 172.8 (3) | C2—C3—C8—C5 | 83.3 (3) |
C7—C2—C3—C4 | 44.0 (3) | C4—C3—C8—C5 | −26.3 (2) |
O3—C2—C3—C8 | −169.2 (2) |
Symmetry codes: (i) −x, y−1/2, −z+2; (ii) −x, y+1/2, −z+2. |
D—H···A | D—H | H···A | D···A | D—H···A |
O8—H18···O3iii | 0.85 | 1.90 | 2.737 (3) | 170 |
O8—H17···O2 | 0.85 | 1.90 | 2.741 (3) | 173 |
O7—H16···O1iv | 0.85 | 2.05 | 2.859 (4) | 158 |
O7—H15···O4i | 0.85 | 2.12 | 2.887 (4) | 150 |
O6—H14···O8v | 0.85 | 1.88 | 2.727 (3) | 175 |
O6—H13···O2 | 0.85 | 1.96 | 2.776 (3) | 161 |
O5—H12···O8i | 0.85 | 1.98 | 2.805 (3) | 164 |
O5—H11···O1vi | 0.85 | 1.96 | 2.791 (3) | 166 |
O4—H10···O2 | 0.85 | 2.06 | 2.879 (3) | 161 |
O4—H9···O1vi | 0.85 | 2.10 | 2.949 (4) | 174 |
O3—H3···O7i | 0.82 | 2.02 | 2.809 (3) | 161 |
Symmetry codes: (i) −x, y−1/2, −z+2; (iii) x, y+1, z; (iv) −x+1, y+1/2, −z+2; (v) −x+1, y−1/2, −z+2; (vi) x−1, y, z. |
Experimental details
Crystal data | |
Chemical formula | Na+·C10H15O3−·5H2O |
Mr | 296.29 |
Crystal system, space group | Monoclinic, P21 |
Temperature (K) | 295 |
a, b, c (Å) | 6.647 (3), 6.976 (3), 16.608 (7) |
β (°) | 93.037 (7) |
V (Å3) | 769.0 (6) |
Z | 2 |
Radiation type | Mo Kα |
µ (mm−1) | 0.13 |
Crystal size (mm) | 0.15 × 0.12 × 0.10 |
Data collection | |
Diffractometer | Bruker SMART CCD area-detector |
Absorption correction | Multi-scan (SADABS; Sheldrick, 1996) |
Tmin, Tmax | 0.981, 0.987 |
No. of measured, independent and observed [I > 2σ(I)] reflections | 4017, 1479, 1284 |
Rint | 0.039 |
(sin θ/λ)max (Å−1) | 0.596 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.042, 0.107, 1.03 |
No. of reflections | 1479 |
No. of parameters | 173 |
H-atom treatment | H-atom parameters constrained |
Δρmax, Δρmin (e Å−3) | 0.21, −0.24 |
Computer programs: SMART (Siemens, 1996), SMART (Siemens, 1996, SAINT (Siemens, 1996), SHELXS97 (Sheldrick, 1997a), SHELXL97 (Sheldrick, 1997a), SHELXTL (Sheldrick, 1997b).
D—H···A | D—H | H···A | D···A | D—H···A |
O8—H18···O3i | 0.85 | 1.90 | 2.737 (3) | 170 |
O8—H17···O2 | 0.85 | 1.90 | 2.741 (3) | 173 |
O7—H16···O1ii | 0.85 | 2.05 | 2.859 (4) | 158 |
O7—H15···O4iii | 0.85 | 2.12 | 2.887 (4) | 150 |
O6—H14···O8iv | 0.85 | 1.88 | 2.727 (3) | 175 |
O6—H13···O2 | 0.85 | 1.96 | 2.776 (3) | 161 |
O5—H12···O8iii | 0.85 | 1.98 | 2.805 (3) | 164 |
O5—H11···O1v | 0.85 | 1.96 | 2.791 (3) | 166 |
O4—H10···O2 | 0.85 | 2.06 | 2.879 (3) | 161 |
O4—H9···O1v | 0.85 | 2.10 | 2.949 (4) | 174 |
O3—H3···O7iii | 0.82 | 2.02 | 2.809 (3) | 161 |
Symmetry codes: (i) x, y+1, z; (ii) −x+1, y+1/2, −z+2; (iii) −x, y−1/2, −z+2; (iv) −x+1, y−1/2, −z+2; (v) x−1, y, z. |
Acknowledgements
The authors thank Taishan University for financial support.
References
Huang, W., Xie, X., Cui, K., Gou, S. & Li, Y. (2005). Inorg. Chim. Acta, 358, 875–884. Web of Science CSD CrossRef CAS Google Scholar
Sheldrick, G. M. (1996). SADABS. University of Göttingen, Germany. Google Scholar
Sheldrick, G. M. (1997a). SHELXS97 and SHELXL97. University of Göttingen, Germany. Google Scholar
Sheldrick, G. M. (1997b). SHELXTL. Version 5.1. Bruker AXS Inc., Madison, Wisconsin, USA. Google Scholar
Siemens (1996). SMART and SAINT. Siemens Analytical X-ray Instruments Inc., Madison, Wisconsin, USA. Google Scholar
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Sodium nopinate is an intermediate in the synthesis of nopinic acid. Hydroxyalkylamino salts of nopinic acid are new compounds useful in pharmaceutical compositions for alleviating ulcer conditions. In the course of synthesis of nopinic acid the crystal of sodium nopinate pentahydrate (I) was obtained in its crystallographic data are reported here (Fig.1). In the title compound the vertices of a distorted octahedron centred on Na+ cation are defined by six O atoms of water molecules. The edge-sharing Na(H2O)6 octahedra form a chain extended along the b axis with the adjacent Na+ cations related by twofold screw axis symmetry. Similar chains were observed in sodium pyridine-4-carboxylate tetrahydrate (Huang et al., 2005).