organic compounds
(E)-Methyl 1,3-thiazol-2-yl ketone 2,4-dinitrophenylhydrazone
aCollege of Chemical Engineering and Materials Science, Zhejiang University of Technology, People's Republic of China
*Correspondence e-mail: shanshang@mail.hz.zj.cn
Crystals of the title compound, C11H9N5O4S, were obtained from a condensation reaction of 2,4-dinitrophenylhydrazine and methyl 1,3-thiazol-2-yl ketone. Excluding two methyl H atoms, the molecule displays a planar structure, the dihedral angle between the terminal thiazole and benzene rings being 1.82 (8)°. The imino group links with adjacent nitro and thiazole groups by intramolecular bifurcated hydrogen bonding. The centroid–centroid separation of 3.7273 (11) Å between nearly parallel benzene and thiazole rings of adjacent molecules indicates the existence of π–π stacking in the Weak intermolecular C—H⋯O hydrogen bonding is also observed.
Related literature
For general background, see: Okabe et al. (1993); Shan et al. (2003, 2006). For a related structure, see: Shan et al. (2008).
Experimental
Crystal data
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Data collection
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Refinement
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Data collection: PROCESS-AUTO (Rigaku, 1998); cell PROCESS-AUTO; data reduction: CrystalStructure (Rigaku/MSC, 2002); program(s) used to solve structure: SIR92 (Altomare et al., 1993); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: ORTEP-3 for Windows (Farrugia, 1997); software used to prepare material for publication: WinGX (Farrugia, 1999).
Supporting information
10.1107/S1600536808015298/om2236sup1.cif
contains datablocks I, global. DOI:Structure factors: contains datablock I. DOI: 10.1107/S1600536808015298/om2236Isup2.hkl
2,4-Dinitrophenylhydrazine (0.4 g, 2 mmol) was dissolved in ethanol (10 ml), and H2SO4 solution (98%, 0.5 ml) was slowly added to the ethanol solution with stirring. The solution was heated at 333 K for several min until the solution cleared. 2-Thiazolyl methyl ketone (0.25 g, 2 mmol) was added to the above solution with continuous stirring, and the mixture was refluxed for 30 min. When the solution had cooled to room temperature yellow powder crystals appeared. The powder crystals were separated and washed with water three times. Recrystallization from an absolute ethanol yielded well shaped single crystals.
Methyl H atoms were placed in calculated positions with C—H = 0.96 Å and the torsion angle was refined to fit the electron density, Uiso(H) = 1.5Ueq(C). Other H atoms were placed in calculated positions with C—H = 0.93 and N—H = 0.86 Å, and refined in riding mode with Uiso(H) = 1.2Ueq(C,N).
Data collection: PROCESS-AUTO (Rigaku, 1998); cell
PROCESS-AUTO (Rigaku, 1998); data reduction: CrystalStructure (Rigaku/MSC, 2002); program(s) used to solve structure: SIR92 (Altomare et al., 1993); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: ORTEP-3 for Windows (Farrugia, 1997); software used to prepare material for publication: WinGX (Farrugia, 1999).C11H9N5O4S | F(000) = 632 |
Mr = 307.29 | Dx = 1.592 Mg m−3 |
Monoclinic, P21/c | Mo Kα radiation, λ = 0.71073 Å |
Hall symbol: -P 2ybc | Cell parameters from 5366 reflections |
a = 8.0126 (5) Å | θ = 3.1–25.5° |
b = 7.3239 (4) Å | µ = 0.28 mm−1 |
c = 21.8683 (12) Å | T = 295 K |
β = 92.610 (2)° | Prism, orange |
V = 1281.98 (13) Å3 | 0.46 × 0.42 × 0.36 mm |
Z = 4 |
Rigaku R-AXIS RAPID IP diffractometer | 1845 reflections with I > 2σ(I) |
Radiation source: fine-focus sealed tube | Rint = 0.039 |
Graphite monochromator | θmax = 27.5°, θmin = 3.1° |
Detector resolution: 10.00 pixels mm-1 | h = −10→10 |
ω scans | k = −9→8 |
12253 measured reflections | l = −28→28 |
2943 independent reflections |
Refinement on F2 | Secondary atom site location: difference Fourier map |
Least-squares matrix: full | Hydrogen site location: inferred from neighbouring sites |
R[F2 > 2σ(F2)] = 0.038 | H-atom parameters constrained |
wR(F2) = 0.119 | w = 1/[σ2(Fo2) + (0.0544P)2 + 0.1169P] where P = (Fo2 + 2Fc2)/3 |
S = 1.11 | (Δ/σ)max < 0.001 |
2943 reflections | Δρmax = 0.22 e Å−3 |
192 parameters | Δρmin = −0.19 e Å−3 |
0 restraints | Extinction correction: SHELXL97 (Sheldrick, 2008), Fc*=kFc[1+0.001xFc2λ3/sin(2θ)]-1/4 |
Primary atom site location: structure-invariant direct methods | Extinction coefficient: 0.029 (3) |
C11H9N5O4S | V = 1281.98 (13) Å3 |
Mr = 307.29 | Z = 4 |
Monoclinic, P21/c | Mo Kα radiation |
a = 8.0126 (5) Å | µ = 0.28 mm−1 |
b = 7.3239 (4) Å | T = 295 K |
c = 21.8683 (12) Å | 0.46 × 0.42 × 0.36 mm |
β = 92.610 (2)° |
Rigaku R-AXIS RAPID IP diffractometer | 1845 reflections with I > 2σ(I) |
12253 measured reflections | Rint = 0.039 |
2943 independent reflections |
R[F2 > 2σ(F2)] = 0.038 | 0 restraints |
wR(F2) = 0.119 | H-atom parameters constrained |
S = 1.11 | Δρmax = 0.22 e Å−3 |
2943 reflections | Δρmin = −0.19 e Å−3 |
192 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 | 0.18922 (7) | 0.17161 (8) | 0.69372 (2) | 0.0610 (2) | |
N1 | 0.3851 (2) | 0.1710 (2) | 0.39844 (7) | 0.0550 (4) | |
N2 | 0.9262 (2) | 0.3699 (2) | 0.33512 (8) | 0.0614 (5) | |
N3 | 0.49462 (19) | 0.2538 (2) | 0.52598 (6) | 0.0488 (4) | |
H3 | 0.3946 | 0.2130 | 0.5201 | 0.059* | |
N4 | 0.5583 (2) | 0.2973 (2) | 0.58348 (7) | 0.0523 (4) | |
N5 | 0.20975 (19) | 0.1562 (2) | 0.57733 (7) | 0.0508 (4) | |
O1 | 0.28243 (18) | 0.1495 (2) | 0.43763 (7) | 0.0762 (5) | |
O2 | 0.35547 (19) | 0.1322 (2) | 0.34454 (7) | 0.0777 (5) | |
O3 | 0.8766 (2) | 0.3374 (3) | 0.28262 (7) | 0.0865 (5) | |
O4 | 1.0639 (2) | 0.4328 (2) | 0.34849 (8) | 0.0820 (5) | |
C1 | 0.5967 (2) | 0.2783 (2) | 0.47889 (8) | 0.0436 (4) | |
C2 | 0.5482 (2) | 0.2422 (2) | 0.41680 (8) | 0.0439 (4) | |
C3 | 0.6570 (2) | 0.2710 (2) | 0.37046 (8) | 0.0475 (4) | |
H3A | 0.6232 | 0.2463 | 0.3301 | 0.057* | |
C4 | 0.8131 (2) | 0.3355 (2) | 0.38400 (8) | 0.0487 (5) | |
C5 | 0.8673 (2) | 0.3689 (3) | 0.44448 (9) | 0.0565 (5) | |
H5 | 0.9754 | 0.4101 | 0.4534 | 0.068* | |
C6 | 0.7610 (2) | 0.3408 (3) | 0.49027 (8) | 0.0531 (5) | |
H6 | 0.7982 | 0.3638 | 0.5304 | 0.064* | |
C7 | 0.4663 (2) | 0.2727 (3) | 0.62965 (8) | 0.0498 (4) | |
C8 | 0.2965 (2) | 0.2023 (2) | 0.62794 (8) | 0.0469 (4) | |
C9 | 0.0559 (3) | 0.0960 (3) | 0.59096 (9) | 0.0571 (5) | |
H9 | −0.0221 | 0.0579 | 0.5608 | 0.069* | |
C10 | 0.0226 (3) | 0.0947 (3) | 0.65099 (10) | 0.0622 (5) | |
H10 | −0.0778 | 0.0568 | 0.6666 | 0.075* | |
C11 | 0.5480 (3) | 0.3213 (3) | 0.69085 (9) | 0.0675 (6) | |
H11A | 0.6545 | 0.3770 | 0.6849 | 0.101* | |
H11B | 0.5635 | 0.2127 | 0.7150 | 0.101* | |
H11C | 0.4781 | 0.4052 | 0.7116 | 0.101* |
U11 | U22 | U33 | U12 | U13 | U23 | |
S1 | 0.0664 (4) | 0.0751 (4) | 0.0428 (3) | 0.0004 (3) | 0.0172 (2) | −0.0027 (2) |
N1 | 0.0516 (9) | 0.0714 (11) | 0.0421 (9) | −0.0039 (8) | 0.0013 (7) | 0.0003 (8) |
N2 | 0.0643 (11) | 0.0655 (11) | 0.0558 (11) | −0.0015 (9) | 0.0195 (9) | 0.0047 (9) |
N3 | 0.0477 (8) | 0.0626 (10) | 0.0361 (8) | −0.0014 (7) | 0.0045 (7) | −0.0016 (7) |
N4 | 0.0549 (10) | 0.0648 (10) | 0.0371 (8) | −0.0011 (8) | 0.0022 (7) | −0.0041 (7) |
N5 | 0.0541 (9) | 0.0563 (9) | 0.0424 (9) | 0.0006 (7) | 0.0060 (7) | 0.0014 (7) |
O1 | 0.0560 (9) | 0.1221 (14) | 0.0507 (9) | −0.0217 (8) | 0.0066 (7) | −0.0024 (8) |
O2 | 0.0684 (9) | 0.1195 (13) | 0.0448 (8) | −0.0168 (8) | −0.0027 (7) | −0.0133 (8) |
O3 | 0.0966 (12) | 0.1204 (14) | 0.0444 (9) | −0.0222 (10) | 0.0232 (8) | −0.0015 (9) |
O4 | 0.0623 (10) | 0.1066 (13) | 0.0786 (11) | −0.0139 (9) | 0.0215 (8) | 0.0070 (10) |
C1 | 0.0478 (10) | 0.0452 (9) | 0.0382 (9) | 0.0027 (8) | 0.0062 (8) | 0.0007 (8) |
C2 | 0.0456 (10) | 0.0477 (10) | 0.0385 (9) | 0.0024 (8) | 0.0026 (8) | 0.0017 (8) |
C3 | 0.0560 (11) | 0.0490 (10) | 0.0377 (9) | 0.0027 (9) | 0.0036 (8) | 0.0003 (8) |
C4 | 0.0529 (11) | 0.0519 (10) | 0.0424 (10) | 0.0016 (9) | 0.0124 (8) | 0.0016 (8) |
C5 | 0.0512 (11) | 0.0659 (12) | 0.0529 (11) | −0.0090 (9) | 0.0073 (9) | −0.0066 (10) |
C6 | 0.0510 (11) | 0.0671 (12) | 0.0412 (10) | −0.0063 (9) | 0.0031 (8) | −0.0078 (9) |
C7 | 0.0556 (11) | 0.0570 (11) | 0.0373 (9) | 0.0036 (9) | 0.0064 (8) | −0.0005 (8) |
C8 | 0.0548 (11) | 0.0487 (10) | 0.0379 (9) | 0.0054 (8) | 0.0088 (8) | 0.0017 (8) |
C9 | 0.0526 (11) | 0.0641 (12) | 0.0551 (12) | −0.0006 (10) | 0.0069 (9) | −0.0011 (10) |
C10 | 0.0585 (12) | 0.0690 (13) | 0.0607 (13) | −0.0011 (10) | 0.0186 (10) | −0.0012 (11) |
C11 | 0.0678 (14) | 0.0945 (16) | 0.0401 (11) | −0.0064 (12) | 0.0029 (10) | −0.0083 (10) |
S1—C10 | 1.691 (2) | C2—C3 | 1.383 (2) |
S1—C8 | 1.7239 (19) | C3—C4 | 1.357 (3) |
N1—O1 | 1.225 (2) | C3—H3A | 0.9300 |
N1—O2 | 1.225 (2) | C4—C5 | 1.395 (3) |
N1—C2 | 1.447 (2) | C5—C6 | 1.359 (3) |
N2—O4 | 1.219 (2) | C5—H5 | 0.9300 |
N2—O3 | 1.221 (2) | C6—H6 | 0.9300 |
N2—C4 | 1.454 (2) | C7—C8 | 1.454 (3) |
N3—C1 | 1.356 (2) | C7—C11 | 1.505 (3) |
N3—N4 | 1.373 (2) | C9—C10 | 1.352 (3) |
N3—H3 | 0.8600 | C9—H9 | 0.9300 |
N4—C7 | 1.290 (2) | C10—H10 | 0.9300 |
N5—C8 | 1.324 (2) | C11—H11A | 0.9600 |
N5—C9 | 1.355 (3) | C11—H11B | 0.9600 |
C1—C6 | 1.405 (2) | C11—H11C | 0.9600 |
C1—C2 | 1.420 (2) | ||
C10—S1—C8 | 89.63 (10) | C6—C5—C4 | 119.59 (18) |
O1—N1—O2 | 122.43 (17) | C6—C5—H5 | 120.2 |
O1—N1—C2 | 118.64 (15) | C4—C5—H5 | 120.2 |
O2—N1—C2 | 118.92 (17) | C5—C6—C1 | 122.14 (17) |
O4—N2—O3 | 123.44 (18) | C5—C6—H6 | 118.9 |
O4—N2—C4 | 118.47 (18) | C1—C6—H6 | 118.9 |
O3—N2—C4 | 118.07 (18) | N4—C7—C8 | 126.66 (16) |
C1—N3—N4 | 116.93 (15) | N4—C7—C11 | 114.95 (17) |
C1—N3—H3 | 121.5 | C8—C7—C11 | 118.38 (17) |
N4—N3—H3 | 121.5 | N5—C8—C7 | 124.57 (17) |
C7—N4—N3 | 118.86 (16) | N5—C8—S1 | 113.67 (14) |
C8—N5—C9 | 110.35 (17) | C7—C8—S1 | 121.76 (13) |
N3—C1—C6 | 120.08 (16) | C10—C9—N5 | 115.95 (19) |
N3—C1—C2 | 123.59 (16) | C10—C9—H9 | 122.0 |
C6—C1—C2 | 116.32 (16) | N5—C9—H9 | 122.0 |
C3—C2—C1 | 121.21 (16) | C9—C10—S1 | 110.40 (16) |
C3—C2—N1 | 116.32 (15) | C9—C10—H10 | 124.8 |
C1—C2—N1 | 122.46 (16) | S1—C10—H10 | 124.8 |
C4—C3—C2 | 119.92 (17) | C7—C11—H11A | 109.5 |
C4—C3—H3A | 120.0 | C7—C11—H11B | 109.5 |
C2—C3—H3A | 120.0 | H11A—C11—H11B | 109.5 |
C3—C4—C5 | 120.79 (18) | C7—C11—H11C | 109.5 |
C3—C4—N2 | 119.92 (17) | H11A—C11—H11C | 109.5 |
C5—C4—N2 | 119.30 (18) | H11B—C11—H11C | 109.5 |
D—H···A | D—H | H···A | D···A | D—H···A |
N3—H3···O1 | 0.86 | 2.03 | 2.628 (2) | 126 |
N3—H3···N5 | 0.86 | 2.03 | 2.686 (2) | 133 |
C9—H9···O1i | 0.93 | 2.58 | 3.289 (3) | 133 |
Symmetry code: (i) −x, −y, −z+1. |
Experimental details
Crystal data | |
Chemical formula | C11H9N5O4S |
Mr | 307.29 |
Crystal system, space group | Monoclinic, P21/c |
Temperature (K) | 295 |
a, b, c (Å) | 8.0126 (5), 7.3239 (4), 21.8683 (12) |
β (°) | 92.610 (2) |
V (Å3) | 1281.98 (13) |
Z | 4 |
Radiation type | Mo Kα |
µ (mm−1) | 0.28 |
Crystal size (mm) | 0.46 × 0.42 × 0.36 |
Data collection | |
Diffractometer | Rigaku R-AXIS RAPID IP diffractometer |
Absorption correction | – |
No. of measured, independent and observed [I > 2σ(I)] reflections | 12253, 2943, 1845 |
Rint | 0.039 |
(sin θ/λ)max (Å−1) | 0.649 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.038, 0.119, 1.11 |
No. of reflections | 2943 |
No. of parameters | 192 |
H-atom treatment | H-atom parameters constrained |
Δρmax, Δρmin (e Å−3) | 0.22, −0.19 |
Computer programs: PROCESS-AUTO (Rigaku, 1998), CrystalStructure (Rigaku/MSC, 2002), SIR92 (Altomare et al., 1993), SHELXL97 (Sheldrick, 2008), ORTEP-3 for Windows (Farrugia, 1997), WinGX (Farrugia, 1999).
D—H···A | D—H | H···A | D···A | D—H···A |
N3—H3···O1 | 0.86 | 2.03 | 2.628 (2) | 126 |
N3—H3···N5 | 0.86 | 2.03 | 2.686 (2) | 133 |
C9—H9···O1i | 0.93 | 2.58 | 3.289 (3) | 133 |
Symmetry code: (i) −x, −y, −z+1. |
Acknowledgements
The work was supported by the Natural Science Foundation of Zhejiang Province, China (No. M203027).
References
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This is an open-access article distributed under the terms of the Creative Commons Attribution (CC-BY) Licence, which permits unrestricted use, distribution, and reproduction in any medium, provided the original authors and source are cited.
As some phenylhydrazone derivatives have shown to be potentially DNA damaging and mutagenic agents (Okabe et al., 1993), a series of new phenylhydrazone derivatives have been synthesized in our laboratory (Shan et al., 2003; Shan et al., 2006). As part of the ongoing investigation, the title compound has recently been prepared and its crystal structure is reported here.
The molecular structure of the title compound is shown in Fig. 1. The molecule displays a coplanar structure, except methyl H atoms, the dihedral angle between the thiazole and benzene rings being 1.82 (8)°. The N4—C7 bond distance is significantly shorter than N3—N4 and N3—C1 bond distances (Table 1), and indicates the typical C?N double bond. The phenylhydrazone and thiazole are located on the opposite sides of the C?N double bond, the molecule has an E-configuration, similar to that found in a related compound, (E)-2-furlyl methylketone 2,4-dinitrophenylhydrazone (Shan et al., 2008). The imino group links with adjacent nitro and thiazole groups by intra-molecular bifurcated hydrogen bonding (Fig. 1 and Table 2).
A partially overlapped arrangement between nearly parallel benzene ring and thiazole ring of the adjacent molecule is illustrated in Fig. 2. The dihedral angle and centroid-to-centroid separation are 1.82 (8)° and 3.7273 (11) Å, these suggest the existence of π-π stacking between adjacent molecules in the crystal. The crystal structure also contains intermolecular weak C—H···O hydrogen bonding (Table 2).