Literature DB >> 22719504

2-Amino-3-carb-oxy-pyrazin-1-ium perchlorate bis-(2-amino-pyrazin-1-ium-3-carboxyl-ate) monohydrate.

Fadila Berrah, Sofiane Bouacida, Ahlem Bouhraoua, Thierry Roisnel.   

Abstract

The asymmetric unit of the title compound, C(5)H(6)N(3)O(2) (+)·ClO(4) (-)·2C(5)H(5)N(3)O(2)·H(2)O, comprises two symmetry-independent zwitterions, one cation, one perchlorate anion and one water mol-ecule. In the crystal, the three different types of organic entities are linked by N-H⋯O and N-H⋯N hydrogen bonds, forming undulating sheets parallel to (1-10). These sheets are in turn connected by O-H⋯N and O-H⋯O hydrogen bonds involving perchlorate anions and water mol-ecules, forming a three-dimensional network. Intra-molecular N-H⋯O and weak inter-molecular C-H⋯O hydrogen bonds are also present.

Entities:  

Year:  2012        PMID: 22719504      PMCID: PMC3379306          DOI: 10.1107/S1600536812021071

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


Related literature

For crystal structures of hybrid compounds obtained from 3-amino-pyrazine 2-carb­oxy­lic acid, see: Berrah et al. (2011a ▶,b ▶,c ▶). For related perchlorate compounds, see: Bendjeddou et al. (2003 ▶); Berrah et al. (2012 ▶); Toumi Akriche et al.(2010 ▶).

Experimental

Crystal data

C5H6N3O2 +·ClO4 −·2C5H5N3O2·H2O M = 535.83 Triclinic, a = 8.1332 (14) Å b = 11.816 (2) Å c = 11.850 (2) Å α = 95.696 (9)° β = 108.148 (8)° γ = 102.416 (8)° V = 1039.8 (3) Å3 Z = 2 Mo Kα radiation μ = 0.27 mm−1 T = 150 K 0.46 × 0.27 × 0.17 mm

Data collection

Bruker APEXII diffractometer Absorption correction: multi-scan (SADABS; Sheldrick, 2002 ▶) T min = 0.855, T max = 0.955 15575 measured reflections 4705 independent reflections 4165 reflections with I > 2σ(I) R int = 0.057

Refinement

R[F 2 > 2σ(F 2)] = 0.038 wR(F 2) = 0.1 S = 1.04 4705 reflections 332 parameters H atoms treated by a mixture of independent and constrained refinement Δρmax = 0.39 e Å−3 Δρmin = −0.48 e Å−3 Data collection: APEX2 (Bruker, 2006 ▶); cell refinement: SAINT (Bruker, 2006 ▶); data reduction: SAINT; program(s) used to solve structure: SIR2002 (Burla et al., 2005 ▶); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008 ▶); molecular graphics: ORTEP-3 for Windows (Farrugia, 1997 ▶) and Mercury (Macrae et al. 2006 ▶); software used to prepare material for publication: WinGX (Farrugia, 1999 ▶). Crystal structure: contains datablock(s) global, I. DOI: 10.1107/S1600536812021071/lh5470sup1.cif Structure factors: contains datablock(s) I. DOI: 10.1107/S1600536812021071/lh5470Isup2.hkl Supplementary material file. DOI: 10.1107/S1600536812021071/lh5470Isup3.cml Additional supplementary materials: crystallographic information; 3D view; checkCIF report
C5H6N3O2+·ClO4·2C5H5N3O2·H2OZ = 2
Mr = 535.83F(000) = 552
Triclinic, P1Dx = 1.712 Mg m3
Hall symbol: -P 1Mo Kα radiation, λ = 0.71073 Å
a = 8.1332 (14) ÅCell parameters from 7298 reflections
b = 11.816 (2) Åθ = 2.7–27.4°
c = 11.850 (2) ŵ = 0.27 mm1
α = 95.696 (9)°T = 150 K
β = 108.148 (8)°Prism, colourless
γ = 102.416 (8)°0.46 × 0.27 × 0.17 mm
V = 1039.8 (3) Å3
Bruker APEXII diffractometer4165 reflections with I > 2σ(I)
Graphite monochromatorRint = 0.057
CCD rotation images, thin slices scansθmax = 27.5°, θmin = 2.7°
Absorption correction: multi-scan (SADABS; Sheldrick, 2002)h = −10→10
Tmin = 0.855, Tmax = 0.955k = −15→15
15575 measured reflectionsl = −14→15
4705 independent reflections
Refinement on F2Primary atom site location: structure-invariant direct methods
Least-squares matrix: fullSecondary atom site location: difference Fourier map
R[F2 > 2σ(F2)] = 0.038Hydrogen site location: inferred from neighbouring sites
wR(F2) = 0.1H atoms treated by a mixture of independent and constrained refinement
S = 1.04w = 1/[σ2(Fo2) + (0.0379P)2 + 0.495P] where P = (Fo2 + 2Fc2)/3
4705 reflections(Δ/σ)max = 0.001
332 parametersΔρmax = 0.39 e Å3
0 restraintsΔρmin = −0.48 e Å3
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
Cl10.69001 (5)0.36663 (3)−0.00929 (3)0.01747 (11)
O30.68759 (17)0.43096 (11)0.09976 (11)0.0282 (3)
C2A0.07122 (19)−0.13735 (13)0.05029 (13)0.0142 (3)
O20.62112 (16)0.24144 (10)−0.01437 (11)0.0248 (3)
O1A0.32377 (15)0.00920 (10)0.18281 (10)0.0214 (3)
H1A0.40490.06610.18690.032*
O1W0.55592 (16)0.19617 (10)0.19895 (12)0.0222 (3)
H1W0.663 (3)0.2094 (19)0.254 (2)0.033*
H2W0.566 (3)0.205 (2)0.132 (2)0.033*
O2C0.40678 (15)0.39784 (9)0.29630 (10)0.0185 (2)
N2C0.88489 (17)0.53957 (11)0.58581 (12)0.0170 (3)
H2C0.96510.60130.5880.02*
O10.57705 (18)0.40133 (11)−0.11220 (11)0.0298 (3)
N3C0.63598 (17)0.34284 (12)0.58168 (12)0.0176 (3)
O1B0.11825 (16)−0.26089 (10)0.61036 (11)0.0235 (3)
C5B0.3196 (2)0.08607 (14)0.75159 (14)0.0183 (3)
H5B0.34260.11230.8330.022*
C5C0.7831 (2)0.38892 (15)0.68069 (15)0.0197 (3)
H5C0.79980.35230.74780.024*
O40.86893 (17)0.38880 (12)−0.01070 (14)0.0359 (3)
N1A−0.01642 (18)−0.16806 (12)−0.17083 (12)0.0212 (3)
H11A−0.0909−0.2062−0.23980.025*
H12A0.0748−0.1132−0.16710.025*
N2B0.34558 (17)0.12346 (11)0.56691 (12)0.0176 (3)
H2B0.38520.17150.52570.021*
C1C0.4396 (2)0.34074 (13)0.38055 (14)0.0156 (3)
C4B0.3817 (2)0.16113 (14)0.68530 (14)0.0186 (3)
H4B0.44850.23780.72140.022*
C2C0.61173 (19)0.39387 (13)0.48635 (14)0.0147 (3)
C3C0.7406 (2)0.49782 (13)0.48389 (14)0.0150 (3)
O2B−0.00600 (16)−0.22021 (10)0.42749 (10)0.0239 (3)
O1C0.34056 (15)0.24560 (10)0.38619 (10)0.0219 (3)
C3A−0.04216 (19)−0.19367 (13)−0.07064 (14)0.0150 (3)
N2A−0.18714 (16)−0.28048 (11)−0.08043 (11)0.0152 (3)
H2A−0.2602−0.3146−0.15130.018*
N1C0.72791 (18)0.55293 (12)0.39109 (12)0.0199 (3)
H11C0.81060.61430.39610.024*
H12C0.63690.52740.32570.024*
C5A−0.1068 (2)−0.26064 (14)0.12868 (14)0.0178 (3)
H5A−0.1291−0.28570.19570.021*
N3B0.22488 (17)−0.02635 (12)0.70059 (12)0.0173 (3)
C1B0.0919 (2)−0.19231 (14)0.53518 (14)0.0172 (3)
O2A0.25539 (16)0.00695 (10)−0.01483 (10)0.0239 (3)
C2B0.1914 (2)−0.06368 (13)0.58521 (14)0.0156 (3)
N3A0.03789 (17)−0.17121 (11)0.14528 (12)0.0164 (3)
C1A0.2274 (2)−0.03376 (13)0.06933 (14)0.0154 (3)
C4C0.9077 (2)0.48821 (15)0.68396 (15)0.0200 (3)
H4C1.00730.520.75320.024*
N1B0.2181 (2)−0.01866 (13)0.39418 (13)0.0263 (3)
H11B0.25910.03110.35490.032*
H12B0.1569−0.08880.35770.032*
C3B0.2491 (2)0.01272 (14)0.51060 (14)0.0170 (3)
C4A−0.2213 (2)−0.31536 (13)0.01601 (14)0.0168 (3)
H4A−0.3216−0.3760.00630.02*
U11U22U33U12U13U23
Cl10.01646 (19)0.01438 (19)0.0198 (2)0.00210 (14)0.00545 (15)0.00173 (14)
O30.0371 (7)0.0237 (6)0.0195 (6)0.0060 (5)0.0069 (5)−0.0027 (5)
C2A0.0137 (7)0.0142 (7)0.0136 (7)0.0036 (6)0.0033 (6)0.0016 (6)
O20.0290 (6)0.0143 (6)0.0267 (7)−0.0020 (5)0.0092 (5)0.0016 (5)
O1A0.0193 (6)0.0231 (6)0.0145 (6)−0.0055 (4)0.0039 (4)0.0011 (5)
O1W0.0196 (6)0.0226 (6)0.0202 (6)−0.0005 (5)0.0047 (5)0.0046 (5)
O2C0.0207 (6)0.0158 (5)0.0141 (5)0.0003 (4)0.0019 (4)0.0031 (4)
N2C0.0142 (6)0.0147 (6)0.0187 (7)−0.0012 (5)0.0050 (5)0.0012 (5)
O10.0366 (7)0.0292 (7)0.0208 (6)0.0125 (6)0.0033 (5)0.0057 (5)
N3C0.0171 (6)0.0169 (7)0.0171 (7)0.0018 (5)0.0052 (5)0.0038 (5)
O1B0.0256 (6)0.0160 (6)0.0206 (6)−0.0040 (5)0.0023 (5)0.0050 (5)
C5B0.0214 (8)0.0167 (8)0.0134 (7)0.0013 (6)0.0044 (6)0.0004 (6)
C5C0.0184 (8)0.0233 (8)0.0156 (8)0.0037 (6)0.0036 (6)0.0062 (6)
O40.0208 (6)0.0277 (7)0.0630 (10)0.0046 (5)0.0204 (7)0.0096 (7)
N1A0.0205 (7)0.0232 (7)0.0126 (7)−0.0041 (5)0.0026 (5)0.0016 (5)
N2B0.0201 (7)0.0144 (6)0.0180 (7)−0.0002 (5)0.0084 (5)0.0058 (5)
C1C0.0167 (7)0.0146 (7)0.0137 (7)0.0004 (6)0.0057 (6)0.0006 (6)
C4B0.0206 (8)0.0136 (7)0.0171 (8)−0.0005 (6)0.0045 (6)−0.0011 (6)
C2C0.0151 (7)0.0126 (7)0.0154 (7)0.0011 (6)0.0058 (6)0.0015 (6)
C3C0.0156 (7)0.0131 (7)0.0155 (7)0.0017 (6)0.0063 (6)0.0003 (6)
O2B0.0263 (6)0.0210 (6)0.0156 (6)−0.0051 (5)0.0031 (5)0.0006 (5)
O1C0.0221 (6)0.0186 (6)0.0165 (6)−0.0066 (4)0.0029 (5)0.0036 (4)
C3A0.0148 (7)0.0153 (7)0.0147 (7)0.0046 (6)0.0043 (6)0.0022 (6)
N2A0.0139 (6)0.0154 (6)0.0127 (6)0.0018 (5)0.0016 (5)0.0007 (5)
N1C0.0192 (7)0.0173 (7)0.0176 (7)−0.0042 (5)0.0040 (5)0.0051 (5)
C5A0.0190 (7)0.0193 (8)0.0152 (8)0.0019 (6)0.0080 (6)0.0035 (6)
N3B0.0182 (6)0.0166 (7)0.0153 (7)0.0011 (5)0.0053 (5)0.0034 (5)
C1B0.0157 (7)0.0164 (8)0.0172 (8)−0.0014 (6)0.0070 (6)0.0009 (6)
O2A0.0270 (6)0.0226 (6)0.0164 (6)−0.0036 (5)0.0056 (5)0.0055 (5)
C2B0.0148 (7)0.0155 (7)0.0142 (7)0.0002 (6)0.0043 (6)0.0020 (6)
N3A0.0170 (6)0.0171 (7)0.0142 (6)0.0032 (5)0.0053 (5)0.0022 (5)
C1A0.0152 (7)0.0150 (7)0.0143 (7)0.0035 (6)0.0036 (6)0.0003 (6)
C4C0.0173 (7)0.0226 (8)0.0161 (8)0.0035 (6)0.0025 (6)0.0002 (6)
N1B0.0368 (8)0.0218 (7)0.0159 (7)−0.0043 (6)0.0116 (6)0.0017 (6)
C3B0.0166 (7)0.0163 (8)0.0157 (8)0.0008 (6)0.0048 (6)0.0027 (6)
C4A0.0150 (7)0.0149 (7)0.0202 (8)0.0016 (6)0.0072 (6)0.0029 (6)
Cl1—O41.4279 (13)N2B—C4B1.347 (2)
Cl1—O11.4362 (13)N2B—C3B1.354 (2)
Cl1—O31.4406 (13)N2B—H2B0.86
Cl1—O21.4528 (12)C1C—O1C1.2553 (19)
C2A—N3A1.317 (2)C1C—C2C1.516 (2)
C2A—C3A1.439 (2)C4B—H4B0.93
C2A—C1A1.504 (2)C2C—C3C1.442 (2)
O1A—C1A1.3103 (18)C3C—N1C1.321 (2)
O1A—H1A0.82O2B—C1B1.2418 (19)
O1W—H1W0.88 (2)C3A—N2A1.352 (2)
O1W—H2W0.84 (2)N2A—C4A1.340 (2)
O2C—C1C1.2524 (19)N2A—H2A0.86
N2C—C4C1.345 (2)N1C—H11C0.86
N2C—C3C1.353 (2)N1C—H12C0.86
N2C—H2C0.86C5A—N3A1.349 (2)
N3C—C2C1.314 (2)C5A—C4A1.365 (2)
N3C—C5C1.350 (2)C5A—H5A0.93
O1B—C1B1.2631 (19)N3B—C2B1.317 (2)
C5B—N3B1.354 (2)C1B—C2B1.520 (2)
C5B—C4B1.361 (2)O2A—C1A1.2112 (19)
C5B—H5B0.93C2B—C3B1.432 (2)
C5C—C4C1.364 (2)C4C—H4C0.93
C5C—H5C0.93N1B—C3B1.321 (2)
N1A—C3A1.321 (2)N1B—H11B0.86
N1A—H11A0.86N1B—H12B0.86
N1A—H12A0.86C4A—H4A0.93
O4—Cl1—O1110.11 (9)N1C—C3C—C2C125.21 (14)
O4—Cl1—O3110.07 (8)N2C—C3C—C2C115.84 (14)
O1—Cl1—O3109.55 (8)N1A—C3A—N2A118.17 (14)
O4—Cl1—O2109.26 (8)N1A—C3A—C2A125.89 (14)
O1—Cl1—O2108.67 (8)N2A—C3A—C2A115.95 (13)
O3—Cl1—O2109.15 (8)C4A—N2A—C3A122.52 (13)
N3A—C2A—C3A121.68 (14)C4A—N2A—H2A118.7
N3A—C2A—C1A118.80 (13)C3A—N2A—H2A118.7
C3A—C2A—C1A119.47 (13)C3C—N1C—H11C120
C1A—O1A—H1A109.5C3C—N1C—H12C120
H1W—O1W—H2W110 (2)H11C—N1C—H12C120
C4C—N2C—C3C122.50 (14)N3A—C5A—C4A121.69 (14)
C4C—N2C—H2C118.8N3A—C5A—H5A119.2
C3C—N2C—H2C118.8C4A—C5A—H5A119.2
C2C—N3C—C5C119.78 (14)C2B—N3B—C5B119.75 (14)
N3B—C5B—C4B120.86 (15)O2B—C1B—O1B126.42 (15)
N3B—C5B—H5B119.6O2B—C1B—C2B118.62 (14)
C4B—C5B—H5B119.6O1B—C1B—C2B114.96 (13)
N3C—C5C—C4C121.16 (15)N3B—C2B—C3B121.61 (14)
N3C—C5C—H5C119.4N3B—C2B—C1B117.00 (14)
C4C—C5C—H5C119.4C3B—C2B—C1B121.38 (14)
C3A—N1A—H11A120C2A—N3A—C5A119.10 (13)
C3A—N1A—H12A120O2A—C1A—O1A124.13 (14)
H11A—N1A—H12A120O2A—C1A—C2A121.45 (14)
C4B—N2B—C3B122.34 (14)O1A—C1A—C2A114.38 (13)
C4B—N2B—H2B118.8N2C—C4C—C5C119.23 (14)
C3B—N2B—H2B118.8N2C—C4C—H4C120.4
O2C—C1C—O1C125.77 (14)C5C—C4C—H4C120.4
O2C—C1C—C2C116.62 (13)C3B—N1B—H11B120
O1C—C1C—C2C117.59 (13)C3B—N1B—H12B120
N2B—C4B—C5B119.43 (14)H11B—N1B—H12B120
N2B—C4B—H4B120.3N1B—C3B—N2B119.36 (14)
C5B—C4B—H4B120.3N1B—C3B—C2B124.66 (15)
N3C—C2C—C3C121.48 (14)N2B—C3B—C2B115.96 (14)
N3C—C2C—C1C116.98 (13)N2A—C4A—C5A119.01 (14)
C3C—C2C—C1C121.52 (13)N2A—C4A—H4A120.5
N1C—C3C—N2C118.95 (14)C5A—C4A—H4A120.5
C2C—N3C—C5C—C4C0.2 (2)C5B—N3B—C2B—C1B177.24 (13)
C3B—N2B—C4B—C5B−0.1 (2)O2B—C1B—C2B—N3B150.06 (15)
N3B—C5B—C4B—N2B1.2 (2)O1B—C1B—C2B—N3B−29.6 (2)
C5C—N3C—C2C—C3C0.9 (2)O2B—C1B—C2B—C3B−31.1 (2)
C5C—N3C—C2C—C1C−177.26 (14)O1B—C1B—C2B—C3B149.24 (15)
O2C—C1C—C2C—N3C171.42 (14)C3A—C2A—N3A—C5A−0.3 (2)
O1C—C1C—C2C—N3C−6.8 (2)C1A—C2A—N3A—C5A177.01 (13)
O2C—C1C—C2C—C3C−6.8 (2)C4A—C5A—N3A—C2A−1.3 (2)
O1C—C1C—C2C—C3C175.03 (14)N3A—C2A—C1A—O2A−173.93 (14)
C4C—N2C—C3C—N1C−179.80 (14)C3A—C2A—C1A—O2A3.5 (2)
C4C—N2C—C3C—C2C−0.2 (2)N3A—C2A—C1A—O1A3.9 (2)
N3C—C2C—C3C—N1C178.63 (15)C3A—C2A—C1A—O1A−178.67 (13)
C1C—C2C—C3C—N1C−3.3 (2)C3C—N2C—C4C—C5C1.3 (2)
N3C—C2C—C3C—N2C−0.9 (2)N3C—C5C—C4C—N2C−1.3 (2)
C1C—C2C—C3C—N2C177.19 (13)C4B—N2B—C3B—N1B179.88 (15)
N3A—C2A—C3A—N1A−177.91 (14)C4B—N2B—C3B—C2B−1.7 (2)
C1A—C2A—C3A—N1A4.8 (2)N3B—C2B—C3B—N1B−179.13 (16)
N3A—C2A—C3A—N2A2.0 (2)C1B—C2B—C3B—N1B2.1 (2)
C1A—C2A—C3A—N2A−175.33 (12)N3B—C2B—C3B—N2B2.5 (2)
N1A—C3A—N2A—C4A177.75 (14)C1B—C2B—C3B—N2B−176.22 (13)
C2A—C3A—N2A—C4A−2.1 (2)C3A—N2A—C4A—C5A0.7 (2)
C4B—C5B—N3B—C2B−0.3 (2)N3A—C5A—C4A—N2A1.1 (2)
C5B—N3B—C2B—C3B−1.6 (2)
D—H···AD—HH···AD···AD—H···A
O1A—H1A···O1W0.821.712.5258 (18)172
O1W—H1W···O1Bi0.88 (2)1.92 (2)2.7873 (19)169 (2)
O1W—H2W···O20.84 (2)1.99 (2)2.8176 (19)172 (2)
O1W—H1W···N3Bi0.88 (2)2.56 (2)3.052 (2)115.8 (17)
N2B—H2B···O1C0.861.922.6935 (18)149
N1C—H11C···O2Bii0.862.112.958 (2)170
N2C—H2C···O1Bii0.861.762.6156 (19)171
N2A—H2A···O2Ciii0.861.802.6536 (17)175
N1A—H11A···O1Ciii0.862.142.9340 (19)153
N1B—H11B···O1A0.862.262.916 (2)133
N1B—H11B···O1C0.862.443.087 (2)133
N1B—H12B···O2B0.862.212.814 (2)127
N1A—H12A···O2A0.862.092.7038 (19)128
N1C—H12C···O2C0.862.062.6734 (19)128
N2B—H2B···N3C0.862.413.058 (2)132
N1B—H12B···N3A0.862.413.035 (2)130
N1A—H12A···N3Biv0.862.443.152 (2)140
C4B—H4B···O1v0.932.413.267 (2)153
C4C—H4C···O3vi0.932.453.350 (2)162
C5A—H5A···O2B0.932.583.336 (2)138
C5B—H5B···O2v0.932.483.145 (2)129
C5B—H5B···O2Av0.932.483.164 (2)130
Table 1

Hydrogen-bond geometry (Å, °)

D—H⋯AD—HH⋯ADAD—H⋯A
O1A—H1A⋯O1W0.821.712.5258 (18)172
O1W—H1W⋯O1Bi0.88 (2)1.92 (2)2.7873 (19)169 (2)
O1W—H2W⋯O20.84 (2)1.99 (2)2.8176 (19)172 (2)
O1W—H1W⋯N3Bi0.88 (2)2.56 (2)3.052 (2)115.8 (17)
N2B—H2B⋯O1C0.861.922.6935 (18)149
N1C—H11C⋯O2Bii0.862.112.958 (2)170
N2C—H2C⋯O1Bii0.861.762.6156 (19)171
N2A—H2A⋯O2Ciii0.861.802.6536 (17)175
N1A—H11A⋯O1Ciii0.862.142.9340 (19)153
N1B—H11B⋯O1A0.862.262.916 (2)133
N1B—H11B⋯O1C0.862.443.087 (2)133
N1B—H12B⋯O2B0.862.212.814 (2)127
N1A—H12A⋯O2A0.862.092.7038 (19)128
N1C—H12C⋯O2C0.862.062.6734 (19)128
N2B—H2B⋯N3C0.862.413.058 (2)132
N1B—H12B⋯N3A0.862.413.035 (2)130
N1A—H12A⋯N3Biv0.862.443.152 (2)140
C4B—H4B⋯O1v0.932.413.267 (2)153
C4C—H4C⋯O3vi0.932.453.350 (2)162
C5A—H5A⋯O2B0.932.583.336 (2)138
C5B—H5B⋯O2v0.932.483.145 (2)129
C5B—H5B⋯O2Av0.932.483.164 (2)130

Symmetry codes: (i) ; (ii) ; (iii) ; (iv) ; (v) ; (vi) .

  6 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.  2-Amino-3-nitro-pyridinium perchlorate.

Authors:  Samah Toumi Akriche; Mohamed Rzaigui; Noura Al-Hokbany; Refaat Mohamed Mahfouz
Journal:  Acta Crystallogr Sect E Struct Rep Online       Date:  2010-01-09

3.  2-Amino-3-carb-oxy-pyrazin-1-ium nitrate monohydrate.

Authors:  Fadila Berrah; Amira Ouakkaf; Sofiane Bouacida; Thierry Roisnel
Journal:  Acta Crystallogr Sect E Struct Rep Online       Date:  2011-01-29

4.  Bis(2-amino-3-carb-oxy-pyrazin-1-ium) sulfate dihydrate.

Authors:  Fadila Berrah; Amira Ouakkaf; Sofiane Bouacida; Thierry Roisnel
Journal:  Acta Crystallogr Sect E Struct Rep Online       Date:  2011-02-23

5.  2-Amino-3-carb-oxy-pyrazin-1-ium dihydrogen phosphate.

Authors:  Fadila Berrah; Sofiane Bouacida; Thierry Roisnel
Journal:  Acta Crystallogr Sect E Struct Rep Online       Date:  2011-05-14

6.  2-Amino-3-carb-oxy-pyridinium perchlorate.

Authors:  Fadila Berrah; Sofiane Bouacida; Hayet Anana; Thierry Roisnel
Journal:  Acta Crystallogr Sect E Struct Rep Online       Date:  2012-05-02
  6 in total

北京卡尤迪生物科技股份有限公司 © 2022-2023.