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ISSN: 2056-9890

2-Amino-4-methyl­pyridinium 2-hy­dr­oxy­benzoate

aX-ray Crystallography Unit, School of Physics, Universiti Sains Malaysia, 11800 USM, Penang, Malaysia
*Correspondence e-mail: hkfun@usm.my

(Received 21 July 2010; accepted 26 July 2010; online 31 July 2010)

The asymmetric unit of the title mol­ecular salt, C6H9N2+·C7H5O3, contains two cations and two anions. Both the salicylate anions contain an intra­molecular O—H⋯O hydrogen bond, which generates an S(6) ring. Both the 2-amino-4-methyl­pyridine mol­ecules are protonated at their pyridine N atoms. In the crystal, both cations form two N—H⋯O hydrogen bonds to their adjacent anions, forming ion pairs. Further N—H⋯O links generate sheets lying parallel to the ab plane. In addition, weak C—H⋯O bonds and aromatic ππ stacking inter­actions [centroid–centroid distances = 3.5691 (9) and 3.6215 (9) Å] are observed between the cations and anions.

Related literature

For related structures, see: Navarro Ranninger et al. (1985[Navarro Ranninger, M.-C., Martínez-Carrera, S. & García-Blanco, S. (1985). Acta Cryst. C41, 21-22.]); Luque et al. (1997[Luque, A., Sertucha, J., Lezama, L., Rojo, T. & Roman, P. (1997). J. Chem. Soc. Dalton Trans. pp. 847-854.]); Qin et al. (1999[Qin, J. G., Su, N. B., Dai, C. Y., Yang, C. L., Liu, D. Y., Day, M. W., Wu, B. C. & Chen, C. T. (1999). Polyhedron, 18, 3461-3464.]); Jin et al. (2001); Albrecht et al. (2003[Albrecht, A. S., Landee, C. P. & Turnbull, M. M. (2003). J. Chem. Crystallogr. 33, 269-276.]); Kvick & Noordik (1977[Kvick, Å. & Noordik, J. (1977). Acta Cryst. B33, 2862-2866.]). For hydrogen-bond motifs, see: Bernstein et al. (1995[Bernstein, J., Davis, R. E., Shimoni, L. & Chang, N.-L. (1995). Angew. Chem. Int. Ed. Engl. 34, 1555-1573.]). For bond-length data, see: Allen et al. (1987[Allen, F. H., Kennard, O., Watson, D. G., Brammer, L., Orpen, A. G. & Taylor, R. (1987). J. Chem. Soc. Perkin Trans. 2, pp. S1-19.]). For the stability of the temperature controller used in the data collection, see: Cosier & Glazer (1986[Cosier, J. & Glazer, A. M. (1986). J. Appl. Cryst. 19, 105-107.]).

[Scheme 1]

Experimental

Crystal data
  • C6H9N2+·C7H5O3

  • Mr = 246.26

  • Triclinic, [P \overline 1]

  • a = 7.2417 (2) Å

  • b = 12.5520 (3) Å

  • c = 14.7699 (3) Å

  • α = 68.752 (2)°

  • β = 82.038 (2)°

  • γ = 88.824 (2)°

  • V = 1238.58 (5) Å3

  • Z = 4

  • Mo Kα radiation

  • μ = 0.10 mm−1

  • T = 100 K

  • 0.32 × 0.10 × 0.04 mm

Data collection
  • Bruker APEXII CCD diffractometer

  • Absorption correction: multi-scan (SADABS; Bruker, 2009[Bruker (2009). APEX2, SAINT and SADABS. Bruker AXS Inc., Madison, Wisconsin, USA.]) Tmin = 0.971, Tmax = 0.996

  • 23090 measured reflections

  • 8280 independent reflections

  • 5112 reflections with I > 2σ(I)

  • Rint = 0.047

Refinement
  • R[F2 > 2σ(F2)] = 0.056

  • wR(F2) = 0.155

  • S = 1.00

  • 8280 reflections

  • 359 parameters

  • H atoms treated by a mixture of independent and constrained refinement

  • Δρmax = 0.38 e Å−3

  • Δρmin = −0.28 e Å−3

Table 1
Hydrogen-bond geometry (Å, °)

D—H⋯A D—H H⋯A DA D—H⋯A
O3A—H1A3⋯O2A 0.99 (2) 1.61 (2) 2.5310 (16) 154 (2)
N1A—H1NA⋯O1Bi 0.99 (2) 1.71 (2) 2.6965 (17) 174 (2)
N2A—H2NA⋯O1Aii 0.90 (2) 1.99 (2) 2.8645 (19) 164 (2)
O3B—H1B3⋯O2B 0.94 (3) 1.62 (3) 2.5179 (16) 158 (2)
N2A—H3NA⋯O2Bi 0.94 (2) 1.91 (2) 2.8468 (18) 178 (2)
N1B—H1NB⋯O2A 0.96 (2) 1.76 (2) 2.7186 (17) 172.7 (17)
N2B—H2NB⋯O1A 0.96 (2) 1.84 (2) 2.7976 (18) 177.0 (16)
N2B—H3NB⋯O1Biii 0.93 (2) 1.88 (2) 2.8097 (19) 174.3 (13)
C8B—H8BA⋯O2Biv 0.93 2.47 3.357 (2) 159
C10B—H10B⋯O3B 0.93 2.38 3.039 (2) 128
Symmetry codes: (i) -x+1, -y+1, -z+1; (ii) x, y+1, z; (iii) x, y-1, z; (iv) -x, -y, -z+1.

Data collection: APEX2 (Bruker, 2009[Bruker (2009). APEX2, SAINT and SADABS. Bruker AXS Inc., Madison, Wisconsin, USA.]); cell refinement: SAINT (Bruker, 2009[Bruker (2009). APEX2, SAINT and SADABS. Bruker AXS Inc., Madison, Wisconsin, USA.]); data reduction: SAINT; program(s) used to solve structure: SHELXTL (Sheldrick, 2008[Sheldrick, G. M. (2008). Acta Cryst. A64, 112-122.]); program(s) used to refine structure: SHELXTL; molecular graphics: SHELXTL; software used to prepare material for publication: SHELXTL and PLATON (Spek, 2009[Spek, A. L. (2009). Acta Cryst. D65, 148-155.]).

Supporting information


Comment top

There are numerous examples of 2-amino-substituted pyridine compounds in which the 2-aminopyridines act as neutral ligands (Navarro Ranninger et al., 1985; Luque et al., 1997; Qin et al., 1999) or as protonated cations (Luque et al., 1997; Jin et al., 2001; Albrecht et al., 2003). In order to study some hydrogen bonding interactions, the synthesis and structure of the title salt, (I), is presented here.

The asymmetric unit of the title compound consists of two crystallographically independent 2-amino-4-methylpyridinium cations (A and B) and two salicylate anions (A and B) (Fig. 1). Each 2-amino-4-methylpyridinium cation is planar, with a maximum deviation of 0.004 (1) Å for atom N1A in cation A and 0.006 (2) Å for atom C11B in cation B. In the cations, protonation at atoms N1A and N1B lead to a slight increase in the C9A—N1A—C10A [122.06 (14)°] and C9B—N1B—C10B [121.76 (13)°] angles compared to those observed in an unprotonated structure (Kvick & Noordik, 1977). The bond lengths (Allen et al., 1987) and angles are normal.

In the crystal structure (Fig. 2), the carboxylate groups of each salicylate anions interact with the corresponding 2-amino-4-methylpyridinium cations via a pair of N—H···O hydrogen bonds forming an R22(8) ring motif (Bernstein et al., 1995). Furthermore, these motifs are connected via N—H···O hydrogen bonds, forming a two-dimensional network parallel to the ab-plane. There is an intramolecular O—H···O hydrogen bond in the salicylate anions, which generates an S(6) ring motif. In addition, weak C—H···O and ππ interactions are observed between the cation-anion pairs, [Cg1(N1A/C8A–C12A)& Cg4(C1A–C6A)] and [Cg2(N1B/C8B–C12B) & Cg3(C1B–C6B)], with centroid-centroid distances of 3.5691 (9) Å (1+x, y, z) and 3.6215 (9) Å (-1+x, y, z), respectively.

Related literature top

For related structures, see: Navarro Ranninger et al. (1985); Luque et al. (1997); Qin et al. (1999); Jin et al. (2001); Albrecht et al. (2003); Kvick & Noordik (1977). For hydrogen-bond motifs, see: Bernstein et al. (1995). For bond-length data, see: Allen et al. (1987). For the stability of the temperature controller used in the data collection, see: Cosier & Glazer (1986).

Experimental top

A hot methanol solution (20 ml) of 2-amino-4-methylpyridine (54 mg, Aldrich) and salicylic acid (69 mg, Merck) were mixed and warmed over a heating magnetic stirrer hotplate for a few minutes. The resulting solution was allowed to cool slowly at room temperature and colourless needles of (I) appeared after a few days.

Refinement top

Atoms H1A3, H1B3,H1NA, H2NA, H3NA, H1NB, H2NB, H3NB were located from a difference Fourier map and were refined freely [N–H= 0.90 (2)– 0.99(20 Å and O–H =0.94 (2)–0.99 (2) Å]. The remaining hydrogen atoms were positioned geometrically [C–H = 0.93 or 0.96 Å] and were refined using a riding model, with Uiso(H) = 1.2 or 1.5 Ueq(C). A rotating group model was used for the methyl group.

Structure description top

There are numerous examples of 2-amino-substituted pyridine compounds in which the 2-aminopyridines act as neutral ligands (Navarro Ranninger et al., 1985; Luque et al., 1997; Qin et al., 1999) or as protonated cations (Luque et al., 1997; Jin et al., 2001; Albrecht et al., 2003). In order to study some hydrogen bonding interactions, the synthesis and structure of the title salt, (I), is presented here.

The asymmetric unit of the title compound consists of two crystallographically independent 2-amino-4-methylpyridinium cations (A and B) and two salicylate anions (A and B) (Fig. 1). Each 2-amino-4-methylpyridinium cation is planar, with a maximum deviation of 0.004 (1) Å for atom N1A in cation A and 0.006 (2) Å for atom C11B in cation B. In the cations, protonation at atoms N1A and N1B lead to a slight increase in the C9A—N1A—C10A [122.06 (14)°] and C9B—N1B—C10B [121.76 (13)°] angles compared to those observed in an unprotonated structure (Kvick & Noordik, 1977). The bond lengths (Allen et al., 1987) and angles are normal.

In the crystal structure (Fig. 2), the carboxylate groups of each salicylate anions interact with the corresponding 2-amino-4-methylpyridinium cations via a pair of N—H···O hydrogen bonds forming an R22(8) ring motif (Bernstein et al., 1995). Furthermore, these motifs are connected via N—H···O hydrogen bonds, forming a two-dimensional network parallel to the ab-plane. There is an intramolecular O—H···O hydrogen bond in the salicylate anions, which generates an S(6) ring motif. In addition, weak C—H···O and ππ interactions are observed between the cation-anion pairs, [Cg1(N1A/C8A–C12A)& Cg4(C1A–C6A)] and [Cg2(N1B/C8B–C12B) & Cg3(C1B–C6B)], with centroid-centroid distances of 3.5691 (9) Å (1+x, y, z) and 3.6215 (9) Å (-1+x, y, z), respectively.

For related structures, see: Navarro Ranninger et al. (1985); Luque et al. (1997); Qin et al. (1999); Jin et al. (2001); Albrecht et al. (2003); Kvick & Noordik (1977). For hydrogen-bond motifs, see: Bernstein et al. (1995). For bond-length data, see: Allen et al. (1987). For the stability of the temperature controller used in the data collection, see: Cosier & Glazer (1986).

Computing details top

Data collection: APEX2 (Bruker, 2009); cell refinement: SAINT (Bruker, 2009); data reduction: SAINT (Bruker, 2009); program(s) used to solve structure: SHELXTL (Sheldrick, 2008); program(s) used to refine structure: SHELXTL (Sheldrick, 2008); molecular graphics: SHELXTL (Sheldrick, 2008); software used to prepare material for publication: SHELXTL (Sheldrick, 2008) and PLATON (Spek, 2009).

Figures top
[Figure 1] Fig. 1. The asymmetric unit of the title compound. Displacement ellipsoids are drawn at the 50% probability level.
[Figure 2] Fig. 2. Hydrogen bonding patterns in compound (I).
2-Amino-4-methylpyridinium 2-hydroxybenzoate top
Crystal data top
C6H9N2+·C7H5O3Z = 4
Mr = 246.26F(000) = 520
Triclinic, P1Dx = 1.321 Mg m3
Hall symbol: -P 1Mo Kα radiation, λ = 0.71073 Å
a = 7.2417 (2) ÅCell parameters from 3981 reflections
b = 12.5520 (3) Åθ = 2.7–31.4°
c = 14.7699 (3) ŵ = 0.10 mm1
α = 68.752 (2)°T = 100 K
β = 82.038 (2)°Needle, colourless
γ = 88.824 (2)°0.32 × 0.10 × 0.04 mm
V = 1238.58 (5) Å3
Data collection top
Bruker APEXII CCD
diffractometer
8280 independent reflections
Radiation source: fine-focus sealed tube5112 reflections with I > 2σ(I)
Graphite monochromatorRint = 0.047
φ and ω scansθmax = 31.6°, θmin = 1.5°
Absorption correction: multi-scan
(SADABS; Bruker, 2009)
h = 1010
Tmin = 0.971, Tmax = 0.996k = 1518
23090 measured reflectionsl = 2121
Refinement top
Refinement on F2Primary atom site location: structure-invariant direct methods
Least-squares matrix: fullSecondary atom site location: difference Fourier map
R[F2 > 2σ(F2)] = 0.056Hydrogen site location: inferred from neighbouring sites
wR(F2) = 0.155H atoms treated by a mixture of independent and constrained refinement
S = 1.00 w = 1/[σ2(Fo2) + (0.0755P)2]
where P = (Fo2 + 2Fc2)/3
8280 reflections(Δ/σ)max < 0.001
359 parametersΔρmax = 0.38 e Å3
0 restraintsΔρmin = 0.28 e Å3
Crystal data top
C6H9N2+·C7H5O3γ = 88.824 (2)°
Mr = 246.26V = 1238.58 (5) Å3
Triclinic, P1Z = 4
a = 7.2417 (2) ÅMo Kα radiation
b = 12.5520 (3) ŵ = 0.10 mm1
c = 14.7699 (3) ÅT = 100 K
α = 68.752 (2)°0.32 × 0.10 × 0.04 mm
β = 82.038 (2)°
Data collection top
Bruker APEXII CCD
diffractometer
8280 independent reflections
Absorption correction: multi-scan
(SADABS; Bruker, 2009)
5112 reflections with I > 2σ(I)
Tmin = 0.971, Tmax = 0.996Rint = 0.047
23090 measured reflections
Refinement top
R[F2 > 2σ(F2)] = 0.0560 restraints
wR(F2) = 0.155H atoms treated by a mixture of independent and constrained refinement
S = 1.00Δρmax = 0.38 e Å3
8280 reflectionsΔρmin = 0.28 e Å3
359 parameters
Special details top

Experimental. The crystal was placed in the cold stream of an Oxford Cryosystems Cobra open-flow nitrogen cryostat (Cosier & Glazer, 1986) operating at 100.0 (1) K.

Geometry. All s.u.'s (except the s.u. in the dihedral angle between two l.s. planes) are estimated using the full covariance matrix. The cell s.u.'s are taken into account individually in the estimation of s.u.'s in distances, angles and torsion angles; correlations between s.u.'s in cell parameters are only used when they are defined by crystal symmetry. An approximate (isotropic) treatment of cell s.u.'s is used for estimating s.u.'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 > 2σ(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.

Fractional atomic coordinates and isotropic or equivalent isotropic displacement parameters (Å2) top
xyzUiso*/Ueq
O1A0.68689 (15)0.11656 (9)0.22307 (8)0.0266 (3)
O2A0.61939 (14)0.06247 (9)0.20906 (8)0.0243 (2)
O3A0.85815 (16)0.22440 (9)0.12227 (8)0.0255 (2)
C1A0.9761 (2)0.14446 (13)0.10815 (11)0.0204 (3)
C2A1.1562 (2)0.18050 (15)0.05960 (12)0.0290 (4)
H2AA1.19180.25750.03690.035*
C3A1.2811 (2)0.10169 (17)0.04530 (13)0.0366 (4)
H3AA1.40120.12600.01330.044*
C4A1.2299 (2)0.01322 (16)0.07799 (13)0.0350 (4)
H4AA1.31500.06600.06840.042*
C5A1.0506 (2)0.04874 (14)0.12505 (12)0.0263 (3)
H5AA1.01560.12570.14620.032*
C6A0.9217 (2)0.02859 (13)0.14131 (10)0.0198 (3)
C7A0.7306 (2)0.01258 (12)0.19453 (11)0.0200 (3)
N1A0.68931 (17)0.46245 (11)0.40308 (10)0.0214 (3)
N2A0.74130 (19)0.65677 (12)0.35534 (11)0.0247 (3)
C8A0.6621 (2)0.57734 (14)0.23833 (11)0.0239 (3)
H8AA0.66700.64890.18850.029*
C9A0.6984 (2)0.56827 (13)0.33225 (11)0.0207 (3)
C10A0.6458 (2)0.36749 (13)0.38600 (12)0.0243 (3)
H10A0.63950.29660.43680.029*
C11A0.6114 (2)0.37414 (15)0.29629 (13)0.0281 (4)
H11A0.58260.30840.28520.034*
C12A0.6199 (2)0.48242 (15)0.21964 (12)0.0257 (3)
C13A0.5855 (2)0.49005 (17)0.11939 (13)0.0338 (4)
H13A0.60560.56770.07450.051*
H13B0.45930.46550.12250.051*
H13C0.66980.44170.09710.051*
O1B0.24453 (15)0.57634 (9)0.41257 (8)0.0228 (2)
O2B0.17672 (15)0.39175 (8)0.45092 (8)0.0239 (2)
O3B0.08596 (16)0.31742 (9)0.32564 (9)0.0257 (3)
C1B0.10480 (19)0.42674 (12)0.26094 (11)0.0192 (3)
C2B0.0707 (2)0.44786 (13)0.16487 (12)0.0223 (3)
H2BA0.03580.38800.14710.027*
C3B0.0891 (2)0.55775 (13)0.09701 (11)0.0229 (3)
H3BA0.06640.57160.03330.027*
C4B0.1412 (2)0.64860 (13)0.12204 (11)0.0234 (3)
H4BA0.15380.72250.07550.028*
C5B0.1739 (2)0.62728 (13)0.21704 (11)0.0212 (3)
H5BA0.20800.68780.23400.025*
C6B0.15685 (19)0.51694 (12)0.28802 (11)0.0174 (3)
C7B0.19489 (19)0.49451 (12)0.39042 (11)0.0183 (3)
N1B0.26797 (18)0.00016 (10)0.30554 (9)0.0190 (3)
N2B0.34027 (19)0.18896 (11)0.33877 (10)0.0242 (3)
C8B0.0346 (2)0.14199 (13)0.40050 (11)0.0202 (3)
H8BA0.00360.21860.43050.024*
C9B0.2159 (2)0.11240 (12)0.34789 (11)0.0188 (3)
C10B0.1505 (2)0.08329 (12)0.31225 (11)0.0203 (3)
H10B0.19040.15950.28170.024*
C11B0.0243 (2)0.05709 (13)0.36292 (11)0.0218 (3)
H11B0.10280.11480.36800.026*
C12B0.0857 (2)0.05856 (13)0.40769 (10)0.0207 (3)
C13B0.2817 (2)0.08836 (15)0.46052 (12)0.0277 (4)
H13D0.29520.16950.49540.042*
H13E0.36830.06490.41380.042*
H13F0.30670.04970.50610.042*
H1A30.743 (3)0.1794 (19)0.1574 (17)0.061 (7)*
H1NA0.719 (3)0.4528 (17)0.4688 (16)0.049 (6)*
H2NA0.748 (3)0.7276 (17)0.3090 (14)0.035 (5)*
H1B30.111 (3)0.327 (2)0.3833 (18)0.063 (7)*
H3NA0.769 (3)0.6423 (17)0.4187 (16)0.044 (6)*
H1NB0.390 (3)0.0191 (17)0.2677 (14)0.046 (6)*
H2NB0.457 (3)0.1645 (16)0.2974 (14)0.039 (5)*
H3NB0.302 (2)0.2656 (16)0.3608 (13)0.029 (5)*
Atomic displacement parameters (Å2) top
U11U22U33U12U13U23
O1A0.0262 (6)0.0192 (5)0.0306 (6)0.0005 (4)0.0029 (5)0.0047 (5)
O2A0.0183 (5)0.0199 (5)0.0321 (6)0.0006 (4)0.0010 (4)0.0071 (5)
O3A0.0233 (6)0.0201 (5)0.0297 (6)0.0014 (4)0.0001 (5)0.0061 (5)
C1A0.0193 (7)0.0240 (7)0.0168 (7)0.0010 (6)0.0036 (6)0.0057 (6)
C2A0.0231 (8)0.0311 (9)0.0268 (9)0.0053 (7)0.0022 (6)0.0052 (7)
C3A0.0234 (8)0.0492 (11)0.0310 (10)0.0004 (8)0.0051 (7)0.0104 (8)
C4A0.0281 (9)0.0431 (10)0.0323 (10)0.0099 (8)0.0014 (7)0.0145 (8)
C5A0.0272 (8)0.0280 (8)0.0239 (8)0.0064 (6)0.0042 (6)0.0099 (7)
C6A0.0192 (7)0.0234 (7)0.0162 (7)0.0026 (6)0.0040 (5)0.0062 (6)
C7A0.0208 (7)0.0206 (7)0.0176 (7)0.0015 (6)0.0063 (6)0.0046 (6)
N1A0.0196 (6)0.0233 (6)0.0208 (7)0.0000 (5)0.0031 (5)0.0073 (5)
N2A0.0277 (7)0.0210 (7)0.0242 (7)0.0021 (5)0.0069 (6)0.0057 (6)
C8A0.0165 (7)0.0309 (8)0.0208 (8)0.0033 (6)0.0028 (6)0.0052 (6)
C9A0.0137 (6)0.0239 (7)0.0227 (8)0.0024 (5)0.0021 (6)0.0067 (6)
C10A0.0216 (7)0.0223 (7)0.0279 (8)0.0023 (6)0.0024 (6)0.0079 (6)
C11A0.0218 (8)0.0332 (9)0.0330 (9)0.0034 (7)0.0017 (7)0.0171 (7)
C12A0.0136 (7)0.0395 (9)0.0255 (8)0.0008 (6)0.0022 (6)0.0138 (7)
C13A0.0239 (8)0.0534 (11)0.0275 (9)0.0020 (8)0.0040 (7)0.0185 (8)
O1B0.0295 (6)0.0175 (5)0.0216 (6)0.0026 (4)0.0058 (4)0.0065 (4)
O2B0.0298 (6)0.0162 (5)0.0225 (6)0.0027 (4)0.0036 (5)0.0030 (4)
O3B0.0318 (6)0.0153 (5)0.0302 (6)0.0019 (4)0.0077 (5)0.0070 (5)
C1B0.0150 (6)0.0170 (7)0.0252 (8)0.0019 (5)0.0024 (6)0.0073 (6)
C2B0.0196 (7)0.0245 (7)0.0280 (8)0.0012 (6)0.0054 (6)0.0149 (7)
C3B0.0193 (7)0.0297 (8)0.0222 (8)0.0031 (6)0.0055 (6)0.0117 (7)
C4B0.0238 (8)0.0223 (7)0.0218 (8)0.0008 (6)0.0036 (6)0.0053 (6)
C5B0.0226 (7)0.0194 (7)0.0225 (8)0.0010 (6)0.0032 (6)0.0087 (6)
C6B0.0132 (6)0.0180 (7)0.0207 (7)0.0000 (5)0.0024 (5)0.0067 (6)
C7B0.0152 (7)0.0174 (7)0.0209 (7)0.0010 (5)0.0016 (5)0.0058 (6)
N1B0.0184 (6)0.0159 (6)0.0217 (6)0.0014 (5)0.0032 (5)0.0053 (5)
N2B0.0221 (7)0.0158 (6)0.0330 (8)0.0004 (5)0.0030 (6)0.0071 (6)
C8B0.0214 (7)0.0181 (7)0.0188 (7)0.0048 (6)0.0033 (6)0.0034 (6)
C9B0.0216 (7)0.0162 (7)0.0185 (7)0.0001 (5)0.0066 (6)0.0048 (6)
C10B0.0235 (7)0.0160 (7)0.0214 (7)0.0010 (6)0.0067 (6)0.0056 (6)
C11B0.0229 (8)0.0229 (7)0.0216 (8)0.0035 (6)0.0066 (6)0.0093 (6)
C12B0.0208 (7)0.0264 (8)0.0148 (7)0.0008 (6)0.0056 (6)0.0061 (6)
C13B0.0202 (8)0.0356 (9)0.0251 (8)0.0018 (7)0.0020 (6)0.0087 (7)
Geometric parameters (Å, º) top
O1A—C7A1.2500 (18)O1B—C7B1.2580 (17)
O2A—C7A1.2843 (16)O2B—C7B1.2722 (17)
O3A—C1A1.3591 (17)O3B—C1B1.3549 (18)
O3A—H1A30.99 (2)O3B—H1B30.94 (2)
C1A—C2A1.396 (2)C1B—C2B1.402 (2)
C1A—C6A1.402 (2)C1B—C6B1.404 (2)
C2A—C3A1.380 (2)C2B—C3B1.376 (2)
C2A—H2AA0.9300C2B—H2BA0.9300
C3A—C4A1.385 (3)C3B—C4B1.393 (2)
C3A—H3AA0.9300C3B—H3BA0.9300
C4A—C5A1.384 (2)C4B—C5B1.383 (2)
C4A—H4AA0.9300C4B—H4BA0.9300
C5A—C6A1.3933 (19)C5B—C6B1.397 (2)
C5A—H5AA0.9300C5B—H5BA0.9300
C6A—C7A1.495 (2)C6B—C7B1.499 (2)
N1A—C10A1.356 (2)N1B—C9B1.3550 (18)
N1A—C9A1.3566 (19)N1B—C10B1.3584 (18)
N1A—H1NA0.99 (2)N1B—H1NB0.96 (2)
N2A—C9A1.329 (2)N2B—C9B1.3331 (18)
N2A—H2NA0.90 (2)N2B—H2NB0.96 (2)
N2A—H3NA0.93 (2)N2B—H3NB0.930 (19)
C8A—C12A1.366 (2)C8B—C12B1.373 (2)
C8A—C9A1.411 (2)C8B—C9B1.412 (2)
C8A—H8AA0.9300C8B—H8BA0.9300
C10A—C11A1.355 (2)C10B—C11B1.359 (2)
C10A—H10A0.9300C10B—H10B0.9300
C11A—C12A1.415 (2)C11B—C12B1.411 (2)
C11A—H11A0.9300C11B—H11B0.9300
C12A—C13A1.504 (2)C12B—C13B1.506 (2)
C13A—H13A0.9600C13B—H13D0.9600
C13A—H13B0.9600C13B—H13E0.9600
C13A—H13C0.9600C13B—H13F0.9600
C1A—O3A—H1A3103.3 (12)C1B—O3B—H1B3101.2 (14)
O3A—C1A—C2A118.13 (14)O3B—C1B—C2B117.87 (13)
O3A—C1A—C6A121.82 (13)O3B—C1B—C6B121.75 (13)
C2A—C1A—C6A120.05 (14)C2B—C1B—C6B120.38 (13)
C3A—C2A—C1A119.90 (16)C3B—C2B—C1B119.53 (13)
C3A—C2A—H2AA120.0C3B—C2B—H2BA120.2
C1A—C2A—H2AA120.0C1B—C2B—H2BA120.2
C2A—C3A—C4A120.78 (16)C2B—C3B—C4B121.15 (14)
C2A—C3A—H3AA119.6C2B—C3B—H3BA119.4
C4A—C3A—H3AA119.6C4B—C3B—H3BA119.4
C5A—C4A—C3A119.30 (15)C5B—C4B—C3B119.05 (14)
C5A—C4A—H4AA120.4C5B—C4B—H4BA120.5
C3A—C4A—H4AA120.4C3B—C4B—H4BA120.5
C4A—C5A—C6A121.29 (16)C4B—C5B—C6B121.54 (14)
C4A—C5A—H5AA119.4C4B—C5B—H5BA119.2
C6A—C5A—H5AA119.4C6B—C5B—H5BA119.2
C5A—C6A—C1A118.66 (14)C5B—C6B—C1B118.36 (13)
C5A—C6A—C7A120.15 (14)C5B—C6B—C7B121.13 (13)
C1A—C6A—C7A121.18 (12)C1B—C6B—C7B120.50 (13)
O1A—C7A—O2A123.35 (14)O1B—C7B—O2B123.09 (14)
O1A—C7A—C6A119.44 (12)O1B—C7B—C6B119.41 (13)
O2A—C7A—C6A117.21 (13)O2B—C7B—C6B117.49 (12)
C10A—N1A—C9A122.06 (14)C9B—N1B—C10B121.76 (13)
C10A—N1A—H1NA118.1 (12)C9B—N1B—H1NB117.6 (12)
C9A—N1A—H1NA119.8 (12)C10B—N1B—H1NB120.6 (12)
C9A—N2A—H2NA119.0 (12)C9B—N2B—H2NB120.4 (11)
C9A—N2A—H3NA118.2 (12)C9B—N2B—H3NB119.0 (11)
H2NA—N2A—H3NA122.8 (17)H2NB—N2B—H3NB119.2 (16)
C12A—C8A—C9A120.89 (15)C12B—C8B—C9B120.48 (13)
C12A—C8A—H8AA119.6C12B—C8B—H8BA119.8
C9A—C8A—H8AA119.6C9B—C8B—H8BA119.8
N2A—C9A—N1A118.14 (14)N2B—C9B—N1B117.99 (13)
N2A—C9A—C8A124.06 (15)N2B—C9B—C8B123.61 (13)
N1A—C9A—C8A117.80 (14)N1B—C9B—C8B118.39 (13)
C11A—C10A—N1A121.14 (15)N1B—C10B—C11B121.03 (14)
C11A—C10A—H10A119.4N1B—C10B—H10B119.5
N1A—C10A—H10A119.4C11B—C10B—H10B119.5
C10A—C11A—C12A119.10 (15)C10B—C11B—C12B119.38 (13)
C10A—C11A—H11A120.4C10B—C11B—H11B120.3
C12A—C11A—H11A120.4C12B—C11B—H11B120.3
C8A—C12A—C11A119.01 (15)C8B—C12B—C11B118.95 (13)
C8A—C12A—C13A121.66 (16)C8B—C12B—C13B121.20 (14)
C11A—C12A—C13A119.33 (15)C11B—C12B—C13B119.84 (13)
C12A—C13A—H13A109.5C12B—C13B—H13D109.5
C12A—C13A—H13B109.5C12B—C13B—H13E109.5
H13A—C13A—H13B109.5H13D—C13B—H13E109.5
C12A—C13A—H13C109.5C12B—C13B—H13F109.5
H13A—C13A—H13C109.5H13D—C13B—H13F109.5
H13B—C13A—H13C109.5H13E—C13B—H13F109.5
O3A—C1A—C2A—C3A178.90 (15)O3B—C1B—C2B—C3B179.74 (13)
C6A—C1A—C2A—C3A0.7 (2)C6B—C1B—C2B—C3B0.2 (2)
C1A—C2A—C3A—C4A0.5 (3)C1B—C2B—C3B—C4B0.0 (2)
C2A—C3A—C4A—C5A0.3 (3)C2B—C3B—C4B—C5B0.3 (2)
C3A—C4A—C5A—C6A0.9 (3)C3B—C4B—C5B—C6B0.4 (2)
C4A—C5A—C6A—C1A0.6 (2)C4B—C5B—C6B—C1B0.1 (2)
C4A—C5A—C6A—C7A178.47 (15)C4B—C5B—C6B—C7B179.23 (13)
O3A—C1A—C6A—C5A179.39 (14)O3B—C1B—C6B—C5B179.82 (13)
C2A—C1A—C6A—C5A0.2 (2)C2B—C1B—C6B—C5B0.1 (2)
O3A—C1A—C6A—C7A0.4 (2)O3B—C1B—C6B—C7B0.4 (2)
C2A—C1A—C6A—C7A179.26 (14)C2B—C1B—C6B—C7B179.52 (12)
C5A—C6A—C7A—O1A1.0 (2)C5B—C6B—C7B—O1B0.6 (2)
C1A—C6A—C7A—O1A179.99 (14)C1B—C6B—C7B—O1B178.75 (13)
C5A—C6A—C7A—O2A178.56 (14)C5B—C6B—C7B—O2B179.89 (13)
C1A—C6A—C7A—O2A0.5 (2)C1B—C6B—C7B—O2B0.52 (19)
C10A—N1A—C9A—N2A179.75 (14)C10B—N1B—C9B—N2B179.26 (13)
C10A—N1A—C9A—C8A0.5 (2)C10B—N1B—C9B—C8B0.3 (2)
C12A—C8A—C9A—N2A179.56 (14)C12B—C8B—C9B—N2B179.36 (14)
C12A—C8A—C9A—N1A0.2 (2)C12B—C8B—C9B—N1B0.4 (2)
C9A—N1A—C10A—C11A0.8 (2)C9B—N1B—C10B—C11B0.7 (2)
N1A—C10A—C11A—C12A0.5 (2)N1B—C10B—C11B—C12B1.2 (2)
C9A—C8A—C12A—C11A0.5 (2)C9B—C8B—C12B—C11B0.9 (2)
C9A—C8A—C12A—C13A178.45 (14)C9B—C8B—C12B—C13B177.87 (14)
C10A—C11A—C12A—C8A0.2 (2)C10B—C11B—C12B—C8B1.3 (2)
C10A—C11A—C12A—C13A178.81 (14)C10B—C11B—C12B—C13B177.53 (14)
Hydrogen-bond geometry (Å, º) top
D—H···AD—HH···AD···AD—H···A
O3A—H1A3···O2A0.99 (2)1.61 (2)2.5310 (16)154 (2)
N1A—H1NA···O1Bi0.99 (2)1.71 (2)2.6965 (17)174 (2)
N2A—H2NA···O1Aii0.90 (2)1.99 (2)2.8645 (19)164 (2)
O3B—H1B3···O2B0.94 (3)1.62 (3)2.5179 (16)158 (2)
N2A—H3NA···O2Bi0.94 (2)1.91 (2)2.8468 (18)178 (2)
N1B—H1NB···O2A0.96 (2)1.76 (2)2.7186 (17)172.7 (17)
N2B—H2NB···O1A0.96 (2)1.84 (2)2.7976 (18)177.0 (16)
N2B—H3NB···O1Biii0.93 (2)1.88 (2)2.8097 (19)174.3 (13)
C8B—H8BA···O2Biv0.932.473.357 (2)159
C10B—H10B···O3B0.932.383.039 (2)128
Symmetry codes: (i) x+1, y+1, z+1; (ii) x, y+1, z; (iii) x, y1, z; (iv) x, y, z+1.

Experimental details

Crystal data
Chemical formulaC6H9N2+·C7H5O3
Mr246.26
Crystal system, space groupTriclinic, P1
Temperature (K)100
a, b, c (Å)7.2417 (2), 12.5520 (3), 14.7699 (3)
α, β, γ (°)68.752 (2), 82.038 (2), 88.824 (2)
V3)1238.58 (5)
Z4
Radiation typeMo Kα
µ (mm1)0.10
Crystal size (mm)0.32 × 0.10 × 0.04
Data collection
DiffractometerBruker APEXII CCD
Absorption correctionMulti-scan
(SADABS; Bruker, 2009)
Tmin, Tmax0.971, 0.996
No. of measured, independent and
observed [I > 2σ(I)] reflections
23090, 8280, 5112
Rint0.047
(sin θ/λ)max1)0.737
Refinement
R[F2 > 2σ(F2)], wR(F2), S 0.056, 0.155, 1.00
No. of reflections8280
No. of parameters359
H-atom treatmentH atoms treated by a mixture of independent and constrained refinement
Δρmax, Δρmin (e Å3)0.38, 0.28

Computer programs: APEX2 (Bruker, 2009), SAINT (Bruker, 2009), SHELXTL (Sheldrick, 2008) and PLATON (Spek, 2009).

Hydrogen-bond geometry (Å, º) top
D—H···AD—HH···AD···AD—H···A
O3A—H1A3···O2A0.99 (2)1.61 (2)2.5310 (16)154 (2)
N1A—H1NA···O1Bi0.99 (2)1.71 (2)2.6965 (17)174 (2)
N2A—H2NA···O1Aii0.90 (2)1.99 (2)2.8645 (19)164 (2)
O3B—H1B3···O2B0.94 (3)1.62 (3)2.5179 (16)158 (2)
N2A—H3NA···O2Bi0.94 (2)1.91 (2)2.8468 (18)178 (2)
N1B—H1NB···O2A0.96 (2)1.76 (2)2.7186 (17)172.7 (17)
N2B—H2NB···O1A0.96 (2)1.84 (2)2.7976 (18)177.0 (16)
N2B—H3NB···O1Biii0.93 (2)1.88 (2)2.8097 (19)174.3 (13)
C8B—H8BA···O2Biv0.932.473.357 (2)159
C10B—H10B···O3B0.932.383.039 (2)128
Symmetry codes: (i) x+1, y+1, z+1; (ii) x, y+1, z; (iii) x, y1, z; (iv) x, y, z+1.
 

Footnotes

Thomson Reuters ResearcherID: A-3561-2009.

Acknowledgements

MH and HKF thank the Malaysian Government and Universiti Sains Malaysia for the Research University Golden Goose grant No. 1001/PFIZIK/811012. MH also thanks Universiti Sains Malaysia for a post-doctoral research fellowship.

References

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