organic compounds\(\def\hfill{\hskip 5em}\def\hfil{\hskip 3em}\def\eqno#1{\hfil {#1}}\)

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ISSN: 2056-9890

4-(1H-Pyrazol-3-yl)pyridine–terephthalic acid–water (2/1/2)

aCollege of Chemistry and Chemical Engineering, Hunan Institute of Engineering, Xiang Tan 411104, People's Republic of China, and bThe People's Hospital of Xiangtan County, Xiang Tan 411104, People's Republic of China
*Correspondence e-mail: tzd0517@163.com

(Received 8 March 2012; accepted 13 May 2012; online 31 May 2012)

In the title compound, 2C8H7N3·C8H6O4·2H2O, the pyridine and pyrazole rings are approximately coplanar, the dihedral angle between them being 4.69 (9)°. The asymmetric unit consists of half of the terephthalic acid (an inversion centre generates the other half of the mol­ecule), one 4-(1H-pyrazol-3-yl)pyridine (4pp) mol­ecule and one water mol­ecule. In the crystal, two 4pp and one terephthalic acid mol­ecules form a linear three-molecule unit as a result of O—H⋯N hydrogen bonds. These units are further assembled into a three-dimensional network by two types of hydrogen bonds, viz. O—H⋯O and N—H⋯O.

Related literature

For the synthesis of 4-(1H-pyrazol-3-yl)-pyridine, see: Davies et al. (2003[Davies, G. M., Jeffery, J. C. & Ward, M. D. (2003). New J. Chem. 27, 1550-1553.]).

[Scheme 1]

Experimental

Crystal data
  • 2C8H7N3·C8H6O4·2H2O

  • Mr = 492.49

  • Triclinic, [P \overline 1]

  • a = 6.8364 (14) Å

  • b = 9.5308 (19) Å

  • c = 10.131 (2) Å

  • α = 67.52 (3)°

  • β = 71.22 (3)°

  • γ = 78.10 (3)°

  • V = 574.9 (2) Å3

  • Z = 1

  • Mo Kα radiation

  • μ = 0.11 mm−1

  • T = 293 K

  • 0.32 × 0.25 × 0.18 mm

Data collection
  • Rigaku SCXmini diffractometer

  • Absorption correction: multi-scan (ABSCOR; Higashi, 1995[Higashi, T. (1995). ABSCOR. Rigaku Corporation, Tokyo, Japan.]) Tmin = 0.967, Tmax = 0.981

  • 5041 measured reflections

  • 2024 independent reflections

  • 1254 reflections with I > 2σ(I)

  • Rint = 0.054

Refinement
  • R[F2 > 2σ(F2)] = 0.064

  • wR(F2) = 0.128

  • S = 1.21

  • 2024 reflections

  • 172 parameters

  • 4 restraints

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

  • Δρmax = 0.32 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
N1—H1⋯O1Wi 0.86 1.98 2.829 (3) 170
O1W—H1W⋯O2ii 0.84 (1) 1.99 (1) 2.811 (3) 167 (2)
O1W—H2W⋯O1iii 0.84 (1) 2.06 (1) 2.864 (3) 161 (2)
O1—H11⋯N3 0.82 (1) 1.80 (1) 2.614 (3) 170 (3)
Symmetry codes: (i) x+1, y, z; (ii) x, y+1, z; (iii) -x+1, -y+1, -z.

Data collection: PROCESS-AUTO (Rigaku, 1998[Rigaku (1998). PROCESS-AUTO. Rigaku Americas Corporation, The Woodlands, Texas, USA.]); cell refinement: PROCESS-AUTO; data reduction: PROCESS-AUTO; program(s) used to solve structure: SHELXS97 (Sheldrick, 2008[Sheldrick, G. M. (2008). Acta Cryst. A64, 112-122.]); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008[Sheldrick, G. M. (2008). Acta Cryst. A64, 112-122.]); molecular graphics: DIAMOND (Brandenburg & Putz, 2005[Brandenburg, K. & Putz, H. (2005). DIAMOND. Crystal Impact GbR, Bonn, Germany.]); software used to prepare material for publication: SHELXL97.

Supporting information


Comment top

In the title compound, the pyridine ring and the pyrazole ring are approximately coplanar with the dihedral angles between them being 4.69 (9)°. Two 4pp and one terephthalic acid form a linear three-molecule unit as a result of O—H···N hydrogen bonds (Fig.2 and Table 1), which the N atom is from the ring of pyridine.There is a hydrogen interaction between N1 from pyrazol as the hydrogen bond donor and O1w as the hydrogen bond acceptor.At the same time, O1w as the hydrogen bond donor interacts with two O2 atoms from different terephthalic acid (Fig.3). These supermolecules are assembled into a three-dimensional network by two types of hydrogen bonding including O—H···O and N—H···O.

Related literature top

For the synthesis of 4-(1H-pyrazol-3-yl)-pyridine, see: Davies et al. (2003).

Experimental top

4-(1H-pyrazol-3-yl)-pyridine was prepared according to the published method of Davies et al. (2003). An aqueous solution (20 mL) containing terephthalic acid( 0.1 mmol,16 mg), NaOH (0.2 mmol,8 mg) and 4-(1H-pyrazol-3-yl)-pyridine (0.2 mmol,29 mg) was stirred for 20 minutes in air, and left to stand at room temperature for about four weeks, then the colorless crystals were obtained.

Refinement top

C- and N- bound H atoms were placed at calculated positions and were treated as riding on the parent C or N atoms with C—H = 0.93 Å, N—H = 0.86 Å, and with Uiso(H) = 1.2 Ueq(C, N). The water H-atoms were located in a difference map, and were refined with a distance restraint of O—H = 0.84 Å; their Uiso values were refined.

Computing details top

Data collection: PROCESS-AUTO (Rigaku, 1998); cell refinement: PROCESS-AUTO (Rigaku, 1998); data reduction: PROCESS-AUTO (Rigaku, 1998); program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: DIAMOND (Brandenburg & Putz, 2005); software used to prepare material for publication: SHELXL97 (Sheldrick, 2008).

Figures top
[Figure 1] Fig. 1. The structure of the title compound, with 30% probability displacement ellipsoids [Symmetry codes: i = -x, -y, -z].
[Figure 2] Fig. 2. A view of the supermolecule unit of the title compound. Hydrogen bonds are shown as dashed lines.
[Figure 3] Fig. 3. Three types hydrogen bonds in the stucture. Hydrogen bonds are shown as dashed lines.
4-(1H-Pyrazol-3-yl)pyridine–terephthalic acid–water (2/1/2) top
Crystal data top
2C8H7N3·C8H6O4·2H2OZ = 1
Mr = 492.49F(000) = 258
Triclinic, P1Dx = 1.423 Mg m3
Hall symbol: -P 1Mo Kα radiation, λ = 0.71073 Å
a = 6.8364 (14) ÅCell parameters from 4645 reflections
b = 9.5308 (19) Åθ = 3.2–27.5°
c = 10.131 (2) ŵ = 0.11 mm1
α = 67.52 (3)°T = 293 K
β = 71.22 (3)°Block, colourless
γ = 78.10 (3)°0.32 × 0.25 × 0.18 mm
V = 574.9 (2) Å3
Data collection top
Rigaku SCXmini
diffractometer
2024 independent reflections
Radiation source: sealed tube1254 reflections with I > 2σ(I)
Graphite monochromatorRint = 0.054
ω scansθmax = 25.0°, θmin = 3.2°
Absorption correction: multi-scan
(ABSCOR; Higashi, 1995)
h = 88
Tmin = 0.967, Tmax = 0.981k = 1111
5041 measured reflectionsl = 1212
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)] = 0.064Hydrogen site location: inferred from neighbouring sites
wR(F2) = 0.128H atoms treated by a mixture of independent and constrained refinement
S = 1.21 w = 1/[σ2(Fo2) + (0.0423P)2]
where P = (Fo2 + 2Fc2)/3
2024 reflections(Δ/σ)max = 0.002
172 parametersΔρmax = 0.32 e Å3
4 restraintsΔρmin = 0.28 e Å3
Crystal data top
2C8H7N3·C8H6O4·2H2Oγ = 78.10 (3)°
Mr = 492.49V = 574.9 (2) Å3
Triclinic, P1Z = 1
a = 6.8364 (14) ÅMo Kα radiation
b = 9.5308 (19) ŵ = 0.11 mm1
c = 10.131 (2) ÅT = 293 K
α = 67.52 (3)°0.32 × 0.25 × 0.18 mm
β = 71.22 (3)°
Data collection top
Rigaku SCXmini
diffractometer
2024 independent reflections
Absorption correction: multi-scan
(ABSCOR; Higashi, 1995)
1254 reflections with I > 2σ(I)
Tmin = 0.967, Tmax = 0.981Rint = 0.054
5041 measured reflections
Refinement top
R[F2 > 2σ(F2)] = 0.0644 restraints
wR(F2) = 0.128H atoms treated by a mixture of independent and constrained refinement
S = 1.21Δρmax = 0.32 e Å3
2024 reflectionsΔρmin = 0.28 e Å3
172 parameters
Special details top

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.

Fractional atomic coordinates and isotropic or equivalent isotropic displacement parameters (Å2) top
xyzUiso*/Ueq
C11.0188 (4)0.3344 (3)0.3605 (3)0.0315 (7)
H1W0.422 (4)0.7787 (14)0.275 (3)0.047*
N11.2378 (3)0.4525 (3)0.3732 (3)0.0425 (7)
H11.32090.51970.35070.051*
O10.3502 (3)0.2110 (2)0.0458 (2)0.0473 (6)
O1W0.4882 (3)0.6952 (2)0.2700 (2)0.0513 (6)
C21.0696 (4)0.2524 (3)0.4943 (3)0.0420 (8)
H21.01890.16220.56510.050*
H2W0.553 (4)0.702 (3)0.1821 (10)0.063*
N21.1240 (4)0.4575 (3)0.2854 (2)0.0400 (7)
O20.3105 (3)0.0044 (2)0.2397 (2)0.0475 (6)
C31.2093 (5)0.3327 (4)0.4991 (3)0.0444 (8)
H31.27230.30890.57490.053*
N30.6010 (3)0.2457 (3)0.1765 (3)0.0396 (6)
C40.6356 (4)0.1461 (3)0.3035 (3)0.0449 (8)
H40.56750.05770.34980.054*
C50.7685 (4)0.1702 (3)0.3678 (3)0.0418 (8)
H50.78960.09870.45630.050*
C60.8716 (4)0.3018 (3)0.3005 (3)0.0311 (7)
C70.8296 (4)0.4054 (3)0.1688 (3)0.0421 (8)
H70.89190.49620.12100.050*
C80.6973 (4)0.3730 (3)0.1105 (3)0.0451 (8)
H80.67340.44200.02180.054*
C90.1342 (4)0.0404 (3)0.0568 (3)0.0303 (7)
C100.0548 (4)0.1468 (3)0.0570 (3)0.0362 (7)
H100.09130.24630.09640.043*
C110.2749 (4)0.0835 (3)0.1202 (3)0.0365 (7)
H110.427 (3)0.212 (3)0.093 (2)0.044*
C120.0774 (4)0.1067 (3)0.1123 (3)0.0368 (7)
H120.12910.17990.18820.044*
Atomic displacement parameters (Å2) top
U11U22U33U12U13U23
C10.0348 (17)0.0340 (17)0.0324 (17)0.0076 (14)0.0138 (14)0.0124 (15)
N10.0410 (16)0.0508 (17)0.0497 (17)0.0133 (12)0.0191 (13)0.0218 (15)
O10.0540 (14)0.0522 (14)0.0513 (14)0.0250 (11)0.0301 (11)0.0111 (12)
O1W0.0522 (16)0.0496 (14)0.0540 (14)0.0137 (11)0.0216 (12)0.0092 (12)
C20.0446 (19)0.0435 (19)0.0449 (19)0.0102 (15)0.0174 (16)0.0152 (16)
N20.0418 (15)0.0459 (16)0.0419 (15)0.0168 (12)0.0179 (12)0.0134 (13)
O20.0631 (15)0.0476 (14)0.0426 (13)0.0174 (11)0.0317 (12)0.0065 (12)
C30.050 (2)0.050 (2)0.043 (2)0.0045 (16)0.0243 (16)0.0161 (18)
N30.0368 (15)0.0468 (16)0.0402 (16)0.0107 (12)0.0117 (12)0.0156 (14)
C40.045 (2)0.049 (2)0.048 (2)0.0232 (16)0.0101 (16)0.0169 (18)
C50.0507 (19)0.0396 (18)0.0389 (18)0.0182 (15)0.0195 (15)0.0043 (15)
C60.0322 (17)0.0341 (17)0.0327 (17)0.0028 (14)0.0119 (14)0.0149 (15)
C70.0468 (19)0.0375 (18)0.048 (2)0.0141 (14)0.0211 (16)0.0090 (16)
C80.049 (2)0.048 (2)0.0427 (19)0.0108 (17)0.0227 (16)0.0090 (17)
C90.0263 (16)0.0353 (18)0.0329 (16)0.0078 (13)0.0074 (13)0.0134 (15)
C100.0382 (18)0.0311 (16)0.0435 (18)0.0124 (14)0.0149 (15)0.0094 (15)
C110.0349 (17)0.0402 (19)0.0439 (19)0.0119 (15)0.0123 (15)0.0190 (17)
C120.0381 (18)0.0401 (18)0.0364 (17)0.0093 (14)0.0177 (14)0.0081 (15)
Geometric parameters (Å, º) top
C1—N21.336 (3)C4—C51.373 (4)
C1—C21.397 (4)C4—H40.9300
C1—C61.465 (3)C5—C61.391 (3)
N1—C31.337 (3)C5—H50.9300
N1—N21.340 (3)C6—C71.400 (4)
N1—H10.8600C7—C81.364 (4)
O1—C111.272 (3)C7—H70.9300
O1—H110.8202 (11)C8—H80.9300
O1W—H1W0.8400 (11)C9—C121.383 (3)
O1W—H2W0.8400 (11)C9—C101.391 (4)
C2—C31.364 (4)C9—C111.506 (4)
C2—H20.9300C10—C12i1.382 (4)
O2—C111.247 (3)C10—H100.9300
C3—H30.9300C12—C10i1.382 (4)
N3—C81.333 (3)C12—H120.9300
N3—C41.335 (4)
N2—C1—C2110.9 (2)C5—C6—C7116.8 (3)
N2—C1—C6120.5 (2)C5—C6—C1123.3 (2)
C2—C1—C6128.6 (3)C7—C6—C1120.0 (2)
C3—N1—N2113.3 (2)C8—C7—C6120.0 (3)
C3—N1—H1123.3C8—C7—H7120.0
N2—N1—H1123.3C6—C7—H7120.0
C11—O1—H11102.3 (19)N3—C8—C7122.2 (3)
H1W—O1W—H2W111.1 (12)N3—C8—H8118.9
C3—C2—C1105.4 (3)C7—C8—H8118.9
C3—C2—H2127.3C12—C9—C10118.0 (2)
C1—C2—H2127.3C12—C9—C11120.6 (3)
C1—N2—N1104.1 (2)C10—C9—C11121.4 (2)
N1—C3—C2106.3 (3)C12i—C10—C9120.9 (3)
N1—C3—H3126.8C12i—C10—H10119.5
C2—C3—H3126.8C9—C10—H10119.5
C8—N3—C4119.1 (2)O2—C11—O1124.0 (3)
N3—C4—C5122.0 (3)O2—C11—C9119.7 (3)
N3—C4—H4119.0O1—C11—C9116.3 (3)
C5—C4—H4119.0C9—C12—C10i121.1 (3)
C4—C5—C6120.0 (3)C9—C12—H12119.4
C4—C5—H5120.0C10i—C12—H12119.4
C6—C5—H5120.0
Symmetry code: (i) x, y, z.
Hydrogen-bond geometry (Å, º) top
D—H···AD—HH···AD···AD—H···A
N1—H1···O1Wii0.861.982.829 (3)170
O1W—H1W···O2iii0.84 (1)1.99 (1)2.811 (3)167 (2)
O1W—H2W···O1iv0.84 (1)2.06 (1)2.864 (3)161 (2)
O1—H11···N30.82 (1)1.80 (1)2.614 (3)170 (3)
Symmetry codes: (ii) x+1, y, z; (iii) x, y+1, z; (iv) x+1, y+1, z.

Experimental details

Crystal data
Chemical formula2C8H7N3·C8H6O4·2H2O
Mr492.49
Crystal system, space groupTriclinic, P1
Temperature (K)293
a, b, c (Å)6.8364 (14), 9.5308 (19), 10.131 (2)
α, β, γ (°)67.52 (3), 71.22 (3), 78.10 (3)
V3)574.9 (2)
Z1
Radiation typeMo Kα
µ (mm1)0.11
Crystal size (mm)0.32 × 0.25 × 0.18
Data collection
DiffractometerRigaku SCXmini
diffractometer
Absorption correctionMulti-scan
(ABSCOR; Higashi, 1995)
Tmin, Tmax0.967, 0.981
No. of measured, independent and
observed [I > 2σ(I)] reflections
5041, 2024, 1254
Rint0.054
(sin θ/λ)max1)0.594
Refinement
R[F2 > 2σ(F2)], wR(F2), S 0.064, 0.128, 1.21
No. of reflections2024
No. of parameters172
No. of restraints4
H-atom treatmentH atoms treated by a mixture of independent and constrained refinement
Δρmax, Δρmin (e Å3)0.32, 0.28

Computer programs: PROCESS-AUTO (Rigaku, 1998), SHELXS97 (Sheldrick, 2008), SHELXL97 (Sheldrick, 2008), DIAMOND (Brandenburg & Putz, 2005).

Hydrogen-bond geometry (Å, º) top
D—H···AD—HH···AD···AD—H···A
N1—H1···O1Wi0.861.982.829 (3)170
O1W—H1W···O2ii0.8400 (11)1.986 (7)2.811 (3)167 (2)
O1W—H2W···O1iii0.8400 (11)2.058 (9)2.864 (3)161 (2)
O1—H11···N30.8202 (11)1.801 (5)2.614 (3)170 (3)
Symmetry codes: (i) x+1, y, z; (ii) x, y+1, z; (iii) x+1, y+1, z.
 

Acknowledgements

The authors acknowledge Hunan Provincial Department of Education for the Xiang Norimichi Foundation (2010 243).

References

First citationBrandenburg, K. & Putz, H. (2005). DIAMOND. Crystal Impact GbR, Bonn, Germany.  Google Scholar
First citationDavies, G. M., Jeffery, J. C. & Ward, M. D. (2003). New J. Chem. 27, 1550–1553.  Web of Science CSD CrossRef CAS Google Scholar
First citationHigashi, T. (1995). ABSCOR. Rigaku Corporation, Tokyo, Japan.  Google Scholar
First citationRigaku (1998). PROCESS-AUTO. Rigaku Americas Corporation, The Woodlands, Texas, USA.  Google Scholar
First citationSheldrick, G. M. (2008). Acta Cryst. A64, 112–122.  Web of Science CrossRef CAS IUCr Journals Google Scholar

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