organic compounds
5-(4-Pyridyl)-1,3,4-thiadiazole-2(3H)-thione
aDepartment of Chemical Engineering, Ningbo University of Technology, Ningbo 315016, People's Republic of China, and bCollege of Chemical Engineering and Materials Science, Zhejiang University of Technology, Hangzhou 310014, People's Republic of China
*Correspondence e-mail: xhliu@zjut.edu.cn
The title compound C7H5N3S2, occurs as the thione tautomer in the solid state; the dihedral angle between the pyridine and thiadiazole ring planes is 2.08 (6)°. In the crystal, molecules are linked by N—H⋯N hydrogen bonds, generating C(8) chains propagating in [010].
Related literature
For details of the synthesis, see: Song et al. (2005). For the biological activity of related compounds, see: Liu et al. (2007, 2009a,b,c).
Experimental
Crystal data
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Refinement
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Data collection: CrystalClear (Rigaku/MSC, 2005); cell CrystalClear; data reduction: CrystalClear; program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: SHELXTL (Sheldrick, 2008); software used to prepare material for publication: SHELXL97.
Supporting information
https://doi.org/10.1107/S1600536810052116/hb5770sup1.cif
contains datablocks global, I. DOI:Structure factors: contains datablock I. DOI: https://doi.org/10.1107/S1600536810052116/hb5770Isup2.hkl
Potassium hydroxide (0.11 mol) was dissolved in minimum amount of ethanol, and 4-nicotinehydrazide (0.1 mol) was added to it. The reaction mixture was cooled to 0–5 °C followed by dropwise addition of carbon disulfide (0.11 mol). After addition, the reaction mixture was stirred for 30 min to afford solid potassium dithiocarbazate salt. It was filtered, washed with EtOH, dried, and used as such for further reaction. Potassium dithiocarbazate salt (0.1 mol) was added slowly in small lots to conc sulfuric acid (2.5 times of salt) at 5 °C with constant stirring. The reaction mixture was stirred for 30 min, and the resulting viscous liquid was poured over crushed ice slowly. The solid obtained was filtered and washed and dried to get the title compound. The compound was recrystallized in DMF to yield colorless prisms.
All the H atoms were positioned geometrically (C—H = 0.93–0.97 Å) and refined as riding with Uiso(H) = 1.2Ueq(C) or 1.5Ueq(methyl C).
Thidiazoles had excellent biological activities, such as fungicide, KARI (Liu et al., 2007, 2009a,b,c). Meanwhile, some nicotine structure are also exhibited good biological activity. In continuated our work, a thidiazoles derivatives had been synthesized. The strucuture was confirmed by X-ray crstallography.
Single-crystal X-ray
reveals that the title compound crystallizes in the monoclinic P2(1)/c. As shown in Fig. 1, the pyridine ring and the thiadiazole ring are nearly in the same plane [dihedral angle = 2.1 °]. As shown in Fig. 2, the is stabilized by weak N—H···N intermolecular interactions.For details of the synthesis, see: Song et al. (2005). For the biological activity of related compounds, see: Liu et al. (2007, 2009a,b,c).
Data collection: CrystalClear (Rigaku/MSC, 2005); cell
CrystalClear (Rigaku/MSC, 2005); data reduction: CrystalClear (Rigaku/MSC, 2005); program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: SHELXTL (Sheldrick, 2008); software used to prepare material for publication: SHELXL97 (Sheldrick, 2008).Fig. 1. The molecular structure of (I). Displacement ellipsoids are drawn at the 30% probability level and H atoms are shown as small spheres of arbitrary radii. | |
Fig. 2. The crystal packing for (I). |
C7H5N3S2 | F(000) = 400 |
Mr = 195.26 | Dx = 1.593 Mg m−3 |
Monoclinic, P21/c | Mo Kα radiation, λ = 0.71073 Å |
Hall symbol: -P 2ybc | Cell parameters from 2887 reflections |
a = 7.837 (3) Å | θ = 2.6–27.9° |
b = 15.971 (5) Å | µ = 0.59 mm−1 |
c = 6.694 (2) Å | T = 113 K |
β = 103.680 (4)° | Prism, colorless |
V = 814.1 (5) Å3 | 0.20 × 0.20 × 0.08 mm |
Z = 4 |
Rigaku Saturn CCD diffractometer | 1928 independent reflections |
Radiation source: fine-focus sealed tube | 1642 reflections with I > 2σ(I) |
Graphite monochromator | Rint = 0.033 |
Detector resolution: 14.63 pixels mm-1 | θmax = 27.8°, θmin = 2.6° |
ω and φ scans | h = −10→10 |
Absorption correction: multi-scan (CrystalClear; Rigaku/MSC, 2005) | k = −20→21 |
Tmin = 0.891, Tmax = 0.954 | l = −8→8 |
8141 measured reflections |
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)] = 0.028 | Hydrogen site location: inferred from neighbouring sites |
wR(F2) = 0.076 | H atoms treated by a mixture of independent and constrained refinement |
S = 1.06 | w = 1/[σ2(Fo2) + (0.0461P)2] where P = (Fo2 + 2Fc2)/3 |
1928 reflections | (Δ/σ)max < 0.001 |
113 parameters | Δρmax = 0.44 e Å−3 |
1 restraint | Δρmin = −0.21 e Å−3 |
C7H5N3S2 | V = 814.1 (5) Å3 |
Mr = 195.26 | Z = 4 |
Monoclinic, P21/c | Mo Kα radiation |
a = 7.837 (3) Å | µ = 0.59 mm−1 |
b = 15.971 (5) Å | T = 113 K |
c = 6.694 (2) Å | 0.20 × 0.20 × 0.08 mm |
β = 103.680 (4)° |
Rigaku Saturn CCD diffractometer | 1928 independent reflections |
Absorption correction: multi-scan (CrystalClear; Rigaku/MSC, 2005) | 1642 reflections with I > 2σ(I) |
Tmin = 0.891, Tmax = 0.954 | Rint = 0.033 |
8141 measured reflections |
R[F2 > 2σ(F2)] = 0.028 | 1 restraint |
wR(F2) = 0.076 | H atoms treated by a mixture of independent and constrained refinement |
S = 1.06 | Δρmax = 0.44 e Å−3 |
1928 reflections | Δρmin = −0.21 e Å−3 |
113 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 | ||
S1 | 0.40446 (4) | 0.02171 (2) | 0.20702 (6) | 0.01704 (11) | |
S2 | 0.60139 (5) | −0.14291 (2) | 0.26909 (6) | 0.02389 (13) | |
N1 | 0.27180 (16) | −0.11033 (7) | 0.30185 (19) | 0.0159 (3) | |
N2 | 0.13949 (15) | −0.05360 (7) | 0.28751 (18) | 0.0151 (2) | |
N3 | −0.14570 (15) | 0.23252 (7) | 0.15350 (18) | 0.0154 (3) | |
C1 | 0.42543 (17) | −0.08492 (8) | 0.2646 (2) | 0.0159 (3) | |
C2 | 0.19024 (17) | 0.01952 (8) | 0.2396 (2) | 0.0138 (3) | |
C3 | 0.07477 (17) | 0.09310 (8) | 0.2109 (2) | 0.0138 (3) | |
C4 | 0.13479 (18) | 0.17060 (8) | 0.1615 (2) | 0.0160 (3) | |
H4 | 0.2515 | 0.1772 | 0.1463 | 0.019* | |
C5 | 0.02020 (18) | 0.23800 (8) | 0.1349 (2) | 0.0159 (3) | |
H5 | 0.0617 | 0.2909 | 0.1018 | 0.019* | |
C6 | −0.20252 (18) | 0.15758 (8) | 0.2012 (2) | 0.0156 (3) | |
H6 | −0.3202 | 0.1529 | 0.2145 | 0.019* | |
C7 | −0.09795 (17) | 0.08668 (9) | 0.2320 (2) | 0.0156 (3) | |
H7 | −0.1426 | 0.0348 | 0.2667 | 0.019* | |
H1 | 0.244 (3) | −0.1638 (6) | 0.325 (3) | 0.047 (6)* |
U11 | U22 | U33 | U12 | U13 | U23 | |
S1 | 0.01417 (18) | 0.01237 (18) | 0.0254 (2) | −0.00003 (12) | 0.00638 (15) | 0.00162 (13) |
S2 | 0.0190 (2) | 0.0213 (2) | 0.0318 (3) | 0.00798 (14) | 0.00682 (17) | 0.00402 (15) |
N1 | 0.0171 (6) | 0.0109 (5) | 0.0204 (7) | 0.0014 (4) | 0.0058 (5) | 0.0016 (5) |
N2 | 0.0171 (6) | 0.0117 (5) | 0.0170 (6) | 0.0013 (5) | 0.0048 (5) | 0.0001 (4) |
N3 | 0.0164 (6) | 0.0132 (6) | 0.0158 (6) | −0.0001 (5) | 0.0021 (5) | −0.0016 (4) |
C1 | 0.0169 (7) | 0.0139 (6) | 0.0162 (7) | 0.0003 (5) | 0.0025 (5) | −0.0005 (5) |
C2 | 0.0142 (6) | 0.0137 (6) | 0.0137 (7) | −0.0005 (5) | 0.0039 (5) | −0.0014 (5) |
C3 | 0.0160 (7) | 0.0136 (6) | 0.0115 (7) | 0.0002 (5) | 0.0026 (5) | −0.0014 (5) |
C4 | 0.0146 (7) | 0.0158 (7) | 0.0179 (7) | −0.0014 (5) | 0.0046 (6) | −0.0002 (5) |
C5 | 0.0183 (7) | 0.0123 (6) | 0.0167 (7) | −0.0022 (5) | 0.0037 (6) | 0.0000 (5) |
C6 | 0.0142 (6) | 0.0170 (7) | 0.0158 (7) | −0.0015 (5) | 0.0040 (6) | −0.0017 (5) |
C7 | 0.0177 (7) | 0.0126 (7) | 0.0164 (7) | −0.0025 (5) | 0.0042 (6) | −0.0006 (5) |
S1—C2 | 1.7437 (15) | C2—C3 | 1.4679 (18) |
S1—C1 | 1.7452 (15) | C3—C4 | 1.3916 (19) |
S2—C1 | 1.6555 (14) | C3—C7 | 1.3974 (18) |
N1—C1 | 1.3485 (18) | C4—C5 | 1.3862 (19) |
N1—N2 | 1.3631 (16) | C4—H4 | 0.9500 |
N1—H1 | 0.902 (9) | C5—H5 | 0.9500 |
N2—C2 | 1.2980 (17) | C6—C7 | 1.3844 (19) |
N3—C5 | 1.3378 (18) | C6—H6 | 0.9500 |
N3—C6 | 1.3417 (17) | C7—H7 | 0.9500 |
C2—S1—C1 | 89.77 (6) | C7—C3—C2 | 120.65 (12) |
C1—N1—N2 | 118.98 (11) | C5—C4—C3 | 118.43 (13) |
C1—N1—H1 | 125.1 (12) | C5—C4—H4 | 120.8 |
N2—N1—H1 | 115.7 (13) | C3—C4—H4 | 120.8 |
C2—N2—N1 | 110.06 (11) | N3—C5—C4 | 123.48 (12) |
C5—N3—C6 | 117.71 (11) | N3—C5—H5 | 118.3 |
N1—C1—S2 | 127.20 (11) | C4—C5—H5 | 118.3 |
N1—C1—S1 | 107.03 (10) | N3—C6—C7 | 123.17 (13) |
S2—C1—S1 | 125.77 (8) | N3—C6—H6 | 118.4 |
N2—C2—C3 | 122.50 (12) | C7—C6—H6 | 118.4 |
N2—C2—S1 | 114.16 (10) | C6—C7—C3 | 118.57 (12) |
C3—C2—S1 | 123.33 (10) | C6—C7—H7 | 120.7 |
C4—C3—C7 | 118.64 (12) | C3—C7—H7 | 120.7 |
C4—C3—C2 | 120.71 (12) | ||
C1—N1—N2—C2 | −0.77 (17) | N2—C2—C3—C7 | −0.8 (2) |
N2—N1—C1—S2 | −178.87 (10) | S1—C2—C3—C7 | 177.65 (11) |
N2—N1—C1—S1 | 0.50 (15) | C7—C3—C4—C5 | −0.1 (2) |
C2—S1—C1—N1 | −0.08 (10) | C2—C3—C4—C5 | 179.66 (12) |
C2—S1—C1—S2 | 179.29 (11) | C6—N3—C5—C4 | 0.3 (2) |
N1—N2—C2—C3 | 179.24 (12) | C3—C4—C5—N3 | −0.3 (2) |
N1—N2—C2—S1 | 0.65 (15) | C5—N3—C6—C7 | 0.1 (2) |
C1—S1—C2—N2 | −0.34 (11) | N3—C6—C7—C3 | −0.5 (2) |
C1—S1—C2—C3 | −178.92 (12) | C4—C3—C7—C6 | 0.5 (2) |
N2—C2—C3—C4 | 179.40 (13) | C2—C3—C7—C6 | −179.28 (12) |
S1—C2—C3—C4 | −2.14 (19) |
D—H···A | D—H | H···A | D···A | D—H···A |
N1—H1···N3i | 0.90 (1) | 1.85 (1) | 2.7395 (19) | 169 (2) |
Symmetry code: (i) −x, y−1/2, −z+1/2. |
Experimental details
Crystal data | |
Chemical formula | C7H5N3S2 |
Mr | 195.26 |
Crystal system, space group | Monoclinic, P21/c |
Temperature (K) | 113 |
a, b, c (Å) | 7.837 (3), 15.971 (5), 6.694 (2) |
β (°) | 103.680 (4) |
V (Å3) | 814.1 (5) |
Z | 4 |
Radiation type | Mo Kα |
µ (mm−1) | 0.59 |
Crystal size (mm) | 0.20 × 0.20 × 0.08 |
Data collection | |
Diffractometer | Rigaku Saturn CCD |
Absorption correction | Multi-scan (CrystalClear; Rigaku/MSC, 2005) |
Tmin, Tmax | 0.891, 0.954 |
No. of measured, independent and observed [I > 2σ(I)] reflections | 8141, 1928, 1642 |
Rint | 0.033 |
(sin θ/λ)max (Å−1) | 0.657 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.028, 0.076, 1.06 |
No. of reflections | 1928 |
No. of parameters | 113 |
No. of restraints | 1 |
H-atom treatment | H atoms treated by a mixture of independent and constrained refinement |
Δρmax, Δρmin (e Å−3) | 0.44, −0.21 |
Computer programs: CrystalClear (Rigaku/MSC, 2005), SHELXS97 (Sheldrick, 2008), SHELXL97 (Sheldrick, 2008), SHELXTL (Sheldrick, 2008).
D—H···A | D—H | H···A | D···A | D—H···A |
N1—H1···N3i | 0.904 (12) | 1.846 (14) | 2.7395 (19) | 169 (2) |
Symmetry code: (i) −x, y−1/2, −z+1/2. |
Acknowledgements
This work was supported financially by the National Natural Science Foundation of China (No. 21002090) and the Key Laboratory of Pesticide Chemistry and Applications, Ministry of Agriculture (MOA), Beijing, People's Republic of China (No. MOAPCA201005) and the Scientific Research Fund of Zhejiang Education Department (Y201018479).
References
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Thidiazoles had excellent biological activities, such as fungicide, KARI (Liu et al., 2007, 2009a,b,c). Meanwhile, some nicotine structure are also exhibited good biological activity. In continuated our work, a thidiazoles derivatives had been synthesized. The strucuture was confirmed by X-ray crstallography.
Single-crystal X-ray diffraction analysis reveals that the title compound crystallizes in the monoclinic space group P2(1)/c. As shown in Fig. 1, the pyridine ring and the thiadiazole ring are nearly in the same plane [dihedral angle = 2.1 °]. As shown in Fig. 2, the crystal structure is stabilized by weak N—H···N intermolecular interactions.