Literature DB >> 24826154

Benzene-1,3,5-tri-carb-oxy-lic acid-pyridinium-2-olate (1/3).

José J Campos-Gaxiola1, Felipe Zamora Falcon1, Ramón Corral Higuera1, Herbert Höpfl2, Adriana Cruz-Enríquez1.   

Abstract

The asymmetric unit of the title compound, C9H6O6·3C5H5NO, contains one benzene-1,3,5-tri-carb-oxy-lic acid mol-ecule (BTA) and three pyridin-2-ol mol-ecules each present in the zwitterion form. In the crystal, these entities are linked through O-H⋯O(-) and N(+)-H⋯O(-) hydrogen bonds, forming sheets parallel to (10-1). These layers contain macrocyclic rings of composition [BTA]2[pyol]6 and with graph-set notation R (6) 8(44), which are stacked along c through π-π inter-actions [inter-centroid distances = 3.536 (2)-3.948 (3) Å]. They are inter-connected by N(+)-H⋯O(-) hydrogen-bonded chains of pyridin-2-ol mol-ecules running parallel to c, forming a three-dimensional network. There are also C-H⋯O hydrogen bonds present which reinforce the three-dimensional structure.

Entities:  

Year:  2014        PMID: 24826154      PMCID: PMC3998530          DOI: 10.1107/S1600536814005534

Source DB:  PubMed          Journal:  Acta Crystallogr Sect E Struct Rep Online        ISSN: 1600-5368


Related literature

For reports on supra­molecular crystal engineering and potential applications of co-crystals, see: Desiraju (1995 ▶); Karki et al. (2009 ▶); Aakeröy et al. (2010 ▶); Yan et al. (2012 ▶); Li et al. (2014 ▶); Ebenezer & Mu­thiah (2012 ▶. For background to related crystal structures, see: Bhogala et al. (2005 ▶); Shattock et al. (2008 ▶); Yu (2012 ▶).

Experimental

Crystal data

C9H6O6·3C5H5NO M = 495.44 Monoclinic, a = 14.344 (2) Å b = 25.993 (5) Å c = 6.7047 (10) Å β = 117.472 (2)° V = 2217.8 (6) Å3 Z = 4 Mo Kα radiation μ = 0.12 mm−1 T = 100 K 0.49 × 0.41 × 0.34 mm

Data collection

Bruker APEX CCD area-detector diffractometer Absorption correction: multi-scan (SADABS; Sheldrick, 1996 ▶) T min = 0.95, T max = 0.96 12173 measured reflections 2433 independent reflections 2354 reflections with I > 2σ(I) R int = 0.076

Refinement

R[F 2 > 2σ(F 2)] = 0.047 wR(F 2) = 0.104 S = 1.08 2433 reflections 343 parameters 8 restraints H atoms treated by a mixture of independent and constrained refinement Δρmax = 0.33 e Å−3 Δρmin = −0.25 e Å−3 Data collection: SMART (Bruker, 2001 ▶); cell refinement: SAINT-Plus-NT (Bruker 2001 ▶); data reduction: SAINT-Plus-NT; program(s) used to solve structure: SHELXS97 (Sheldrick, 2008 ▶); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008 ▶); molecular graphics: ORTEP-3 for Windows (Farrugia, 2012 ▶) and Mercury (Macrae et al., 2008 ▶); software used to prepare material for publication: SHELXTL (Sheldrick, 2008 ▶) and publCIF (Westrip, 2010 ▶). Crystal structure: contains datablock(s) I, New_Global_Publ_Block. DOI: 10.1107/S1600536814005534/su2712sup1.cif Structure factors: contains datablock(s) I. DOI: 10.1107/S1600536814005534/su2712Isup2.hkl Click here for additional data file. Supporting information file. DOI: 10.1107/S1600536814005534/su2712Isup3.cml CCDC reference: 991203 Additional supporting information: crystallographic information; 3D view; checkCIF report
C9H6O6·3C5H5NOF(000) = 1032
Mr = 495.44Dx = 1.484 Mg m3
Monoclinic, CcMo Kα radiation, λ = 0.71073 Å
Hall symbol: C -2ycCell parameters from 4866 reflections
a = 14.344 (2) Åθ = 2.8–28.5°
b = 25.993 (5) ŵ = 0.12 mm1
c = 6.7047 (10) ÅT = 100 K
β = 117.472 (2)°Rectangular prism, colorless
V = 2217.8 (6) Å30.49 × 0.41 × 0.34 mm
Z = 4
Bruker APEX CCD area-detector diffractometer2433 independent reflections
Radiation source: fine-focus sealed tube2354 reflections with I > 2σ(I)
Graphite monochromatorRint = 0.076
phi and ω scansθmax = 27.0°, θmin = 1.8°
Absorption correction: multi-scan (SADABS; Sheldrick, 1996)h = −18→18
Tmin = 0.95, Tmax = 0.96k = −33→32
12173 measured reflectionsl = −8→8
Refinement on F2Primary atom site location: structure-invariant direct methods
Least-squares matrix: fullSecondary atom site location: difference Fourier map
R[F2 > 2σ(F2)] = 0.047Hydrogen site location: inferred from neighbouring sites
wR(F2) = 0.104H atoms treated by a mixture of independent and constrained refinement
S = 1.08w = 1/[σ2(Fo2) + (0.0394P)2 + 2.5063P] where P = (Fo2 + 2Fc2)/3
2433 reflections(Δ/σ)max < 0.001
343 parametersΔρmax = 0.33 e Å3
8 restraintsΔρmin = −0.25 e Å3
Experimental. Spectroscopic data for the title compound: IR (KBr, cm-1): 3442, 3103, 3050, 1704, 1690, 1624, 1613, 1468, 1282, 1193, 1094, 1024.
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.
xyzUiso*/Ueq
N10.5716 (2)0.74048 (12)0.7948 (5)0.0185 (7)
H1A0.5074 (9)0.7479 (18)0.734 (7)0.028*
N20.7381 (2)0.23549 (13)−0.0482 (5)0.0212 (7)
H2A0.6809 (18)0.2201 (16)−0.086 (8)0.032*
N30.1812 (2)0.06645 (12)0.3136 (5)0.0183 (6)
H3A0.191 (3)0.0665 (17)0.199 (4)0.027*
O10.0316 (2)0.39495 (9)0.3690 (5)0.0200 (5)
H1'0.031 (4)0.3628 (2)0.355 (8)0.030*
O20.2044 (2)0.38226 (10)0.5822 (5)0.0214 (6)
O3−0.00333 (19)0.63687 (10)0.3527 (4)0.0196 (6)
H3'−0.053 (2)0.6581 (13)0.294 (7)0.029*
O4−0.11698 (19)0.57121 (9)0.2541 (4)0.0164 (5)
O50.43466 (18)0.53127 (10)0.7273 (4)0.0183 (5)
H5'0.4927 (17)0.5446 (16)0.755 (8)0.027*
O60.3814 (2)0.61071 (10)0.7524 (5)0.0218 (6)
O70.8839 (2)0.71094 (10)1.1439 (4)0.0180 (5)
O81.02950 (19)0.29837 (9)0.2960 (4)0.0183 (5)
O90.11946 (18)0.06361 (10)0.8481 (4)0.0152 (5)
C10.1406 (3)0.46845 (14)0.5090 (6)0.0129 (7)
C20.0532 (3)0.50081 (13)0.4269 (5)0.0113 (6)
H2−0.01560.48660.36200.014*
C30.0669 (3)0.55406 (14)0.4403 (6)0.0127 (7)
C40.1686 (3)0.57493 (13)0.5353 (6)0.0127 (7)
H40.17830.61120.54520.015*
C50.2549 (3)0.54226 (13)0.6147 (5)0.0125 (7)
C60.2412 (3)0.48950 (13)0.6015 (6)0.0136 (7)
H60.30080.46750.65580.016*
C70.1295 (3)0.41098 (14)0.4918 (6)0.0150 (7)
C8−0.0277 (3)0.58794 (13)0.3392 (6)0.0124 (7)
C90.3641 (3)0.56526 (13)0.7065 (6)0.0134 (7)
C100.6414 (3)0.77853 (13)0.8312 (6)0.0146 (7)
H100.61640.81190.77330.017*
C110.7469 (3)0.77035 (14)0.9492 (6)0.0160 (7)
H110.79470.79790.97560.019*
C120.7854 (3)0.72007 (14)1.0328 (6)0.0156 (7)
C130.7089 (3)0.68087 (13)0.9850 (6)0.0161 (7)
H130.73080.64671.03520.019*
C140.6033 (3)0.69193 (15)0.8667 (6)0.0182 (7)
H140.55270.66550.83550.022*
C150.7479 (3)0.28586 (15)0.0073 (6)0.0203 (8)
H150.68670.3060−0.03210.024*
C160.8446 (3)0.30826 (14)0.1192 (6)0.0188 (7)
H160.84950.34390.15420.023*
C170.9382 (3)0.27898 (14)0.1843 (6)0.0163 (7)
C180.9227 (3)0.22593 (14)0.1212 (7)0.0195 (8)
H180.98200.20440.15940.023*
C190.8238 (3)0.20564 (15)0.0069 (6)0.0216 (8)
H190.81530.1703−0.03410.026*
C200.0841 (3)0.07837 (14)0.2819 (6)0.0189 (8)
H200.03070.08610.13490.023*
C210.0613 (3)0.07946 (14)0.4590 (6)0.0183 (7)
H21−0.00700.08900.43470.022*
C220.1399 (3)0.06629 (13)0.6804 (6)0.0142 (7)
C230.2420 (3)0.05643 (13)0.7041 (6)0.0162 (7)
H230.29850.04980.84880.019*
C240.2592 (3)0.05641 (13)0.5203 (6)0.0178 (7)
H240.32760.04920.53860.021*
U11U22U33U12U13U23
N10.0100 (15)0.0280 (17)0.0156 (15)0.0043 (13)0.0042 (13)−0.0001 (13)
N20.0156 (16)0.0321 (19)0.0161 (15)−0.0092 (13)0.0075 (13)−0.0042 (13)
N30.0239 (17)0.0187 (15)0.0168 (16)−0.0008 (12)0.0133 (14)0.0001 (12)
O10.0166 (13)0.0125 (11)0.0273 (14)−0.0030 (10)0.0070 (11)−0.0028 (11)
O20.0153 (13)0.0174 (13)0.0278 (14)0.0012 (10)0.0068 (11)0.0000 (11)
O30.0109 (12)0.0159 (12)0.0276 (14)0.0039 (10)0.0050 (11)0.0045 (11)
O40.0122 (12)0.0176 (12)0.0200 (13)−0.0002 (10)0.0080 (10)0.0008 (10)
O50.0093 (12)0.0201 (13)0.0260 (14)−0.0011 (10)0.0086 (11)−0.0021 (11)
O60.0125 (12)0.0207 (14)0.0291 (15)−0.0026 (10)0.0069 (11)−0.0036 (11)
O70.0101 (12)0.0183 (13)0.0212 (13)−0.0004 (9)0.0035 (10)0.0010 (10)
O80.0121 (12)0.0149 (12)0.0237 (13)−0.0007 (9)0.0047 (11)−0.0006 (10)
O90.0113 (12)0.0231 (13)0.0121 (12)−0.0027 (10)0.0062 (10)−0.0014 (10)
C10.0130 (17)0.0189 (17)0.0074 (15)−0.0004 (13)0.0051 (13)−0.0004 (12)
C20.0080 (15)0.0178 (16)0.0078 (15)−0.0014 (12)0.0033 (12)−0.0016 (12)
C30.0148 (16)0.0178 (17)0.0074 (15)0.0003 (13)0.0066 (13)−0.0011 (13)
C40.0149 (17)0.0137 (16)0.0098 (15)−0.0011 (12)0.0059 (13)0.0002 (13)
C50.0131 (16)0.0191 (17)0.0054 (14)0.0003 (13)0.0043 (13)0.0003 (13)
C60.0113 (16)0.0179 (17)0.0113 (15)0.0057 (13)0.0048 (13)0.0021 (13)
C70.0144 (17)0.0181 (17)0.0133 (15)−0.0016 (13)0.0072 (14)−0.0002 (13)
C80.0100 (16)0.0173 (16)0.0110 (16)0.0005 (13)0.0058 (13)−0.0001 (13)
C90.0123 (17)0.0157 (17)0.0099 (16)−0.0004 (12)0.0032 (13)0.0012 (12)
C100.0179 (17)0.0166 (17)0.0116 (15)0.0062 (13)0.0088 (13)0.0015 (13)
C110.0176 (18)0.0166 (16)0.0159 (16)−0.0035 (14)0.0095 (14)−0.0022 (13)
C120.0137 (17)0.0227 (18)0.0094 (16)0.0010 (14)0.0045 (14)−0.0018 (13)
C130.0185 (18)0.0120 (16)0.0171 (17)0.0014 (13)0.0076 (14)0.0016 (13)
C140.0181 (18)0.0208 (18)0.0161 (17)−0.0020 (14)0.0082 (15)−0.0021 (14)
C150.0180 (18)0.029 (2)0.0142 (18)0.0038 (15)0.0078 (15)0.0010 (15)
C160.0192 (19)0.0183 (17)0.0205 (18)0.0005 (14)0.0106 (16)−0.0013 (15)
C170.0183 (18)0.0180 (17)0.0141 (17)−0.0040 (14)0.0089 (14)0.0003 (14)
C180.0186 (19)0.0179 (18)0.025 (2)0.0008 (14)0.0128 (16)0.0012 (15)
C190.028 (2)0.0199 (19)0.0206 (18)−0.0080 (15)0.0146 (17)−0.0044 (15)
C200.0232 (19)0.0206 (18)0.0116 (16)−0.0058 (14)0.0070 (14)0.0006 (14)
C210.0116 (17)0.0217 (18)0.0212 (18)−0.0010 (13)0.0074 (14)−0.0010 (15)
C220.0175 (17)0.0133 (16)0.0157 (17)−0.0064 (13)0.0109 (14)−0.0040 (13)
C230.0160 (17)0.0167 (17)0.0152 (17)−0.0009 (14)0.0067 (14)0.0004 (14)
C240.0157 (17)0.0146 (17)0.0248 (19)−0.0022 (14)0.0108 (15)0.0004 (14)
N1—C101.347 (5)C4—H40.9500
N1—C141.352 (5)C5—C61.382 (5)
N1—H1A0.8400 (12)C5—C91.517 (5)
N2—C151.351 (5)C6—H60.9500
N2—C191.353 (5)C10—C111.363 (5)
N2—H2A0.8400 (11)C10—H100.9500
N3—C241.345 (5)C11—C121.429 (5)
N3—C201.345 (5)C11—H110.9500
N3—H3A0.8400 (11)C12—C131.421 (5)
O1—C71.325 (4)C13—C141.377 (5)
O1—H1'0.8400 (11)C13—H130.9500
O2—C71.216 (4)C14—H140.9500
O3—C81.311 (4)C15—C161.365 (5)
O3—H3'0.8400 (11)C15—H150.9500
O4—C81.217 (4)C16—C171.425 (5)
O5—C91.301 (4)C16—H160.9500
O5—H5'0.8400 (12)C17—C181.429 (5)
O6—C91.217 (4)C18—C191.369 (5)
O7—C121.280 (4)C18—H180.9500
O8—C171.275 (4)C19—H190.9500
O9—C221.288 (4)C20—C211.370 (5)
C1—C21.394 (5)C20—H200.9500
C1—C61.394 (5)C21—C221.431 (5)
C1—C71.501 (5)C21—H210.9500
C2—C31.395 (5)C22—C231.421 (5)
C2—H20.9500C23—C241.364 (5)
C3—C41.404 (5)C23—H230.9500
C3—C81.492 (5)C24—H240.9500
C4—C51.389 (5)
C10—N1—C14121.4 (3)C10—C11—C12119.6 (3)
C10—N1—H1A118 (3)C10—C11—H11120.2
C14—N1—H1A120 (3)C12—C11—H11120.2
C15—N2—C19121.0 (3)O7—C12—C13121.9 (3)
C15—N2—H2A120 (3)O7—C12—C11121.4 (3)
C19—N2—H2A117 (3)C13—C12—C11116.7 (3)
C24—N3—C20121.1 (3)C14—C13—C12120.6 (3)
C24—N3—H3A122 (3)C14—C13—H13119.7
C20—N3—H3A117 (3)C12—C13—H13119.7
C7—O1—H1'110 (3)N1—C14—C13120.0 (3)
C8—O3—H3'118 (3)N1—C14—H14120.0
C9—O5—H5'113 (3)C13—C14—H14120.0
C2—C1—C6119.8 (3)N2—C15—C16121.0 (3)
C2—C1—C7121.7 (3)N2—C15—H15119.5
C6—C1—C7118.4 (3)C16—C15—H15119.5
C1—C2—C3119.9 (3)C15—C16—C17121.0 (3)
C1—C2—H2120.0C15—C16—H16119.5
C3—C2—H2120.0C17—C16—H16119.5
C2—C3—C4119.9 (3)O8—C17—C16122.4 (3)
C2—C3—C8119.0 (3)O8—C17—C18122.2 (3)
C4—C3—C8121.0 (3)C16—C17—C18115.4 (3)
C5—C4—C3119.6 (3)C19—C18—C17121.1 (3)
C5—C4—H4120.2C19—C18—H18119.4
C3—C4—H4120.2C17—C18—H18119.4
C6—C5—C4120.5 (3)N2—C19—C18120.5 (3)
C6—C5—C9120.4 (3)N2—C19—H19119.7
C4—C5—C9119.1 (3)C18—C19—H19119.7
C5—C6—C1120.3 (3)N3—C20—C21120.8 (3)
C5—C6—H6119.8N3—C20—H20119.6
C1—C6—H6119.8C21—C20—H20119.6
O2—C7—O1123.8 (3)C20—C21—C22120.4 (3)
O2—C7—C1122.3 (3)C20—C21—H21119.8
O1—C7—C1113.9 (3)C22—C21—H21119.8
O4—C8—O3124.6 (3)O9—C22—C23122.0 (3)
O4—C8—C3122.8 (3)O9—C22—C21122.1 (3)
O3—C8—C3112.6 (3)C23—C22—C21115.9 (3)
O6—C9—O5125.1 (3)C24—C23—C22120.4 (3)
O6—C9—C5122.4 (3)C24—C23—H23119.8
O5—C9—C5112.5 (3)C22—C23—H23119.8
N1—C10—C11121.6 (3)N3—C24—C23121.3 (3)
N1—C10—H10119.2N3—C24—H24119.4
C11—C10—H10119.2C23—C24—H24119.4
C6—C1—C2—C3−0.8 (5)C14—N1—C10—C11−2.5 (5)
C7—C1—C2—C3−178.1 (3)N1—C10—C11—C121.4 (5)
C1—C2—C3—C40.3 (5)C10—C11—C12—O7179.9 (3)
C1—C2—C3—C8176.4 (3)C10—C11—C12—C130.3 (5)
C2—C3—C4—C50.2 (5)O7—C12—C13—C14179.5 (3)
C8—C3—C4—C5−175.8 (3)C11—C12—C13—C14−1.0 (5)
C3—C4—C5—C6−0.2 (5)C10—N1—C14—C131.8 (5)
C3—C4—C5—C9177.0 (3)C12—C13—C14—N10.0 (5)
C4—C5—C6—C1−0.2 (5)C19—N2—C15—C160.5 (5)
C9—C5—C6—C1−177.5 (3)N2—C15—C16—C17−1.1 (5)
C2—C1—C6—C50.8 (5)C15—C16—C17—O8−177.4 (3)
C7—C1—C6—C5178.1 (3)C15—C16—C17—C180.9 (5)
C2—C1—C7—O2−172.4 (3)O8—C17—C18—C19178.1 (3)
C6—C1—C7—O210.2 (5)C16—C17—C18—C19−0.2 (5)
C2—C1—C7—O17.9 (5)C15—N2—C19—C180.2 (6)
C6—C1—C7—O1−169.4 (3)C17—C18—C19—N2−0.4 (6)
C2—C3—C8—O43.5 (5)C24—N3—C20—C21−1.5 (5)
C4—C3—C8—O4179.5 (3)N3—C20—C21—C22−2.0 (6)
C2—C3—C8—O3−176.4 (3)C20—C21—C22—O9−175.4 (3)
C4—C3—C8—O3−0.4 (4)C20—C21—C22—C234.8 (5)
C6—C5—C9—O6−168.8 (3)O9—C22—C23—C24175.8 (3)
C4—C5—C9—O613.9 (5)C21—C22—C23—C24−4.3 (5)
C6—C5—C9—O511.8 (4)C20—N3—C24—C232.0 (5)
C4—C5—C9—O5−165.5 (3)C22—C23—C24—N31.1 (5)
D—H···AD—HH···AD···AD—H···A
O1—H1′···O8i0.841.722.555 (3)173
O3—H3′···O7ii0.841.702.489 (3)156
O5—H5′···O9iii0.841.702.531 (4)170
N1—H1A···O7iv0.841.912.712 (4)158
N2—H2A···O8v0.842.002.817 (4)165
N3—H3A···O9vi0.842.092.825 (4)146
C14—H14···O60.952.673.596 (5)166
C19—H19···O2vii0.952.483.034 (5)117
C24—H24···O4viii0.952.453.067 (6)123
C13—H13···O9iii0.952.633.270 (4)125
C10—H10···O3ix0.952.423.073 (5)126
C16—H16···O1x0.952.683.307 (4)124
C19—H19···O6xi0.952.573.314 (6)135
C20—H20···O6xii0.952.553.499 (4)176
C23—H23···O4xiii0.952.483.310 (4)147
Table 1

Hydrogen-bond geometry (Å, °)

D—H⋯A D—HH⋯A DA D—H⋯A
O1—H1′⋯O8i 0.841.722.555 (3)173
O3—H3′⋯O7ii 0.841.702.489 (3)156
O5—H5′⋯O9iii 0.841.702.531 (4)170
N1—H1A⋯O7iv 0.841.912.712 (4)158
N2—H2A⋯O8v 0.842.002.817 (4)165
N3—H3A⋯O9vi 0.842.092.825 (4)146
C14—H14⋯O60.952.673.596 (5)166
C19—H19⋯O2vii 0.952.483.034 (5)117
C24—H24⋯O4viii 0.952.453.067 (6)123
C13—H13⋯O9iii 0.952.633.270 (4)125
C10—H10⋯O3ix 0.952.423.073 (5)126
C16—H16⋯O1x 0.952.683.307 (4)124
C19—H19⋯O6xi 0.952.573.314 (6)135
C20—H20⋯O6xii 0.952.553.499 (4)176
C23—H23⋯O4xiii 0.952.483.310 (4)147

Symmetry codes: (i) ; (ii) ; (iii) ; (iv) ; (v) ; (vi) ; (vii) ; (viii) ; (ix) ; (x) ; (xi) ; (xii) ; (xiii) .

  3 in total

1.  A short history of SHELX.

Authors:  George M Sheldrick
Journal:  Acta Crystallogr A       Date:  2007-12-21       Impact factor: 2.290

2.  A homochiral microporous hydrogen-bonded organic framework for highly enantioselective separation of secondary alcohols.

Authors:  Peng Li; Yabing He; Jie Guang; Linghong Weng; John Cong-Gui Zhao; Shengchang Xiang; Banglin Chen
Journal:  J Am Chem Soc       Date:  2014-01-06       Impact factor: 15.419

3.  Benzene-1,2-dicarb-oxy-lic acid-pyridinium-2-olate (1/1).

Authors:  Chua-Hua Yu
Journal:  Acta Crystallogr Sect E Struct Rep Online       Date:  2012-06-02
  3 in total
  2 in total

1.  Crystal structure of 4-hy-droxy-pyridin-1-ium 3,5-di-carb-oxy-benzoate.

Authors:  Selena L Staun; Allen G Oliver
Journal:  Acta Crystallogr E Crystallogr Commun       Date:  2015-06-27

2.  Crystal structure of benzene-1,3,5-tri-carb-oxy-lic acid-4-pyridone (1/3).

Authors:  Selena L Staun; Allen G Oliver
Journal:  Acta Crystallogr E Crystallogr Commun       Date:  2015-10-03
  2 in total

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