organic compounds
(Z)-4-Hexyl-1-(5-nitro-2-oxo-2,3-dihydro-1H-indol-3-ylidene)thiosemicarbazide
aDepartment of Chemistry, Bahauddin Zakariya University, Multan 60800, Pakistan, bDepartment of Physics, University of Sargodha, Sargodha, Pakistan, and cDepartment of Chemistry, Government College University, Lahore, Pakistan
*Correspondence e-mail: dmntahir_uos@yahoo.com
In the title compound, C15H19N5O3S, intramolecular N—H⋯O, N—H⋯N and C—H⋯S interactions occur and the three terminal C atoms of the hexyl group are disordered over two sites with an occupancy ratio of 0.664 (12):0.336 (12). In the crystal, inversion dimers linked by pairs of N—H⋯O hydrogen bonds occur and C—H⋯O bonds link the dimers into chains. A short C=O⋯π contact is also present.
Related literature
For the syntheses and structures of isatin and isatin-derived thiosemicarbazones with biological and medicinal properties, see: Beauchard et al. (2006); Hyatt et al. (2007); Quenelle et al. (2006); Karali et al. (2007). For a related see: Bain et al. (1997). For the syntheses of potent urease inhibitors based on N(4)-arylsubstituted isatin-3-thiosemicarbazones, see: Pervez et al. (2008, 2009). For the graph set analysis of hydrogen-bond patterns in crystal structures, see: Bernstein et al. (1995).
Experimental
Crystal data
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Refinement
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Data collection: APEX2 (Bruker, 2007); cell SAINT (Bruker, 2007); data reduction: SAINT; program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: ORTEP-3 for Windows (Farrugia, 1997) and PLATON (Spek, 2009); software used to prepare material for publication: WinGX (Farrugia, 1999) and PLATON.
Supporting information
https://doi.org/10.1107/S1600536809040276/si2206sup1.cif
contains datablocks global, I. DOI:Structure factors: contains datablock I. DOI: https://doi.org/10.1107/S1600536809040276/si2206Isup2.hkl
A solution of N4-hexylthiosemicarbazide (0.44 g, 2.5 mmol) in ethanol (10 ml) was added to a hot solution of 5-nitroisatin (0.48 g, 2.5 mmol) in 50% aqueous ethanol (30 ml) containing a few drops of glacial acetic acid. The reaction mixture was then heated under reflux for 2 h. The yellow crystalline solid formed during heating was collected by suction filtration. Thorough washing with hot aqueous ethanol gave the title compound (I) in pure form (0.72 g, 82%), m.p. 513 K. The single crystals of (I) were grown in ethanol-n-hexane (1:4) system by diffusion method at room temperature.
The H-atoms were positioned geometrically with N—H = 0.86, C—H = 0.93, 0.96 and 0.97 Å for aryl, methyl and methylene H atoms respectively and constrained to ride on their parent atoms, with Uiso(H) = xUeq(C, N), where x = 1.5 for methyl and 1.2 for all other H atoms.
Isatin and its derivatives are known to possess a broad spectrum of pharmacological properties including antibacterial, anticonvulsant, antifungal, antineoplastic, antiviral, and enzymatic inhibition (Beauchard et al. 2006; Hyatt et al. 2007). Amongst these, isatins-derived thiosemicarbazones have gained a great deal of attention (Beauchard et al., 2006; Quenelle et al., 2006; Karali et al., 2007). Very recently, a number of N(4)-arylsubstituted isatin-3-thiosemicarbazones have been synthesized and reported as potent urease (a nickel-dependent metallo-enzyme) inhibitors (Pervez et al., 2008; Pervez et al., 2009). In continuation to the development of potent and non- or less toxic urease inhibitors, we report herein the
and preparation of the title compound (I, Fig. 1).The
of (II) Indole-2,3-dione 3-(N(4)-ethylthiosemicarbazone) (N'-2-(Thienylidene))benzhydrazide (Bain et al., 1997) has been published. The title compound (I) differs from (II) due to hexyl moiety instead of ethyl moiety.The molecules of the title compound consist of dimers owing to N–H···O type of intermolecular H-bondings forming R22(8) ring motifs (Bernstein et al., 1995). The molecules are interlinked in the form of polymeric chains due to C—H···O type of intermolecular H-bondings (Table 1, Fig. 2). There exist two S(5) and a S(6), R22(10) and R33(12) or R22(13) ring motifs as well (Fig. 2). In the title compound the group (C1—C9/N1—N5/O—O3) of the isatin moiety along with nitro substitution is planar with maximum r.m.s. deviation of 0.0348 Å from the mean square plane and the sulphur atom S1 is at a distance of -0.3497 (16) Å from this mean square plane. The terminating three carbons of the hexyl group are disordered over two sites with occupancy ratio of 0.664 (12):0.336 (12). The C==O···π and N—O···π interactions (Table 1), may also be responsible for stabilizing of the molecules.
For the syntheses and structures of isatin and isatin-derived thiosemicarbazones with biological and medicinal properties, see: Beauchard et al. (2006); Hyatt et al. (2007); Quenelle et al. (2006); Karali et al. (2007). For a related
see: Bain et al. (1997). For the syntheses of potent urease inhibitors based on N(4)-arylsubstituted isatin-3-thiosemicarbazones, see: Pervez et al. (2008, 2009). For the graph set analysis of hydrogen-bond patterns in crystal structures, see: Bernstein et al. (1995). Cg1 and Cg2 are the centroids of the N2/C6/C1/C8/C7 and C1–C6 rings, respectively.Data collection: APEX2 (Bruker, 2007); cell
SAINT (Bruker, 2007); data reduction: SAINT (Bruker, 2007); program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: ORTEP-3 for Windows (Farrugia, 1997) and PLATON (Spek, 2009); software used to prepare material for publication: WinGX (Farrugia, 1999) and PLATON (Spek, 2009).Fig. 1. View of (I) with the atom numbering scheme. The thermal ellipsoids are drawn at the 30% probability level. H-atoms are shown by small circles of arbitrary radii. The single dotted lines represent the intramolecular H-bondings and the atoms of low occupancy factor are joined by double dotted lines. | |
Fig. 2. The partial packing (PLATON; Spek, 2009) which shows that the molecules form dimers which are joined in the form of polymeric chains. |
C15H19N5O3S | F(000) = 736 |
Mr = 349.42 | Dx = 1.353 Mg m−3 |
Monoclinic, P21/c | Mo Kα radiation, λ = 0.71073 Å |
Hall symbol: -P 2ybc | Cell parameters from 4283 reflections |
a = 11.9464 (6) Å | θ = 2.8–28.3° |
b = 4.8845 (3) Å | µ = 0.21 mm−1 |
c = 29.9688 (17) Å | T = 296 K |
β = 101.131 (3)° | Needle, yellow |
V = 1715.85 (17) Å3 | 0.26 × 0.14 × 0.12 mm |
Z = 4 |
Bruker Kappa APEXII CCD diffractometer | 4283 independent reflections |
Radiation source: fine-focus sealed tube | 1964 reflections with I > 2σ(I) |
Graphite monochromator | Rint = 0.062 |
Detector resolution: 7.40 pixels mm-1 | θmax = 28.3°, θmin = 2.8° |
ω scans | h = −15→15 |
Absorption correction: multi-scan (SADABS; Bruker, 2005) | k = −6→6 |
Tmin = 0.963, Tmax = 0.974 | l = −39→39 |
19438 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)] = 0.054 | Hydrogen site location: inferred from neighbouring sites |
wR(F2) = 0.143 | H-atom parameters constrained |
S = 1.00 | w = 1/[σ2(Fo2) + (0.0588P)2] where P = (Fo2 + 2Fc2)/3 |
4283 reflections | (Δ/σ)max = 0.001 |
247 parameters | Δρmax = 0.18 e Å−3 |
6 restraints | Δρmin = −0.21 e Å−3 |
C15H19N5O3S | V = 1715.85 (17) Å3 |
Mr = 349.42 | Z = 4 |
Monoclinic, P21/c | Mo Kα radiation |
a = 11.9464 (6) Å | µ = 0.21 mm−1 |
b = 4.8845 (3) Å | T = 296 K |
c = 29.9688 (17) Å | 0.26 × 0.14 × 0.12 mm |
β = 101.131 (3)° |
Bruker Kappa APEXII CCD diffractometer | 4283 independent reflections |
Absorption correction: multi-scan (SADABS; Bruker, 2005) | 1964 reflections with I > 2σ(I) |
Tmin = 0.963, Tmax = 0.974 | Rint = 0.062 |
19438 measured reflections |
R[F2 > 2σ(F2)] = 0.054 | 6 restraints |
wR(F2) = 0.143 | H-atom parameters constrained |
S = 1.00 | Δρmax = 0.18 e Å−3 |
4283 reflections | Δρmin = −0.21 e Å−3 |
247 parameters |
Geometry. Bond distances, angles etc. have been calculated using the rounded fractional coordinates. All su's are estimated from the variances of the (full) variance-covariance matrix. The cell e.s.d.'s are taken into account in the estimation of distances, angles and torsion angles |
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 | Occ. (<1) | |
S1 | 1.08831 (6) | 0.36613 (17) | 0.14896 (3) | 0.0774 (3) | |
O1 | 0.99569 (14) | −0.2388 (3) | 0.03674 (5) | 0.0529 (6) | |
O2 | 0.3667 (2) | 0.1096 (6) | −0.11002 (9) | 0.1287 (13) | |
O3 | 0.41037 (17) | 0.3726 (5) | −0.05287 (8) | 0.0877 (9) | |
N1 | 0.4324 (2) | 0.1883 (6) | −0.07641 (10) | 0.0709 (10) | |
N2 | 0.85164 (16) | −0.3241 (4) | −0.02531 (7) | 0.0490 (7) | |
N3 | 0.83033 (16) | 0.1924 (4) | 0.05490 (7) | 0.0458 (7) | |
N4 | 0.93056 (16) | 0.1876 (4) | 0.08428 (7) | 0.0510 (8) | |
N5 | 0.87198 (16) | 0.5295 (4) | 0.12710 (6) | 0.0503 (7) | |
C1 | 0.71964 (19) | −0.0082 (4) | −0.01440 (8) | 0.0433 (8) | |
C2 | 0.6158 (2) | 0.1275 (5) | −0.02523 (8) | 0.0484 (8) | |
C3 | 0.5423 (2) | 0.0476 (5) | −0.06399 (9) | 0.0542 (9) | |
C4 | 0.5668 (2) | −0.1580 (5) | −0.09235 (9) | 0.0605 (10) | |
C5 | 0.6693 (2) | −0.2938 (5) | −0.08188 (9) | 0.0568 (10) | |
C6 | 0.7441 (2) | −0.2180 (4) | −0.04288 (8) | 0.0459 (8) | |
C7 | 0.9006 (2) | −0.1945 (4) | 0.01354 (8) | 0.0448 (8) | |
C8 | 0.81712 (19) | 0.0150 (4) | 0.02204 (8) | 0.0427 (8) | |
C9 | 0.9565 (2) | 0.3694 (5) | 0.11984 (9) | 0.0496 (8) | |
C10 | 0.8834 (2) | 0.7192 (5) | 0.16504 (9) | 0.0623 (10) | |
C11 | 0.8653 (3) | 0.5848 (7) | 0.20820 (10) | 0.0824 (14) | |
C12 | 0.7498 (3) | 0.4789 (8) | 0.20746 (12) | 0.0955 (17) | |
C13A | 0.7475 (5) | 0.3834 (17) | 0.2565 (2) | 0.077 (3) | 0.664 (12) |
C14A | 0.6340 (6) | 0.279 (2) | 0.2605 (3) | 0.102 (3) | 0.664 (12) |
C15A | 0.6209 (16) | 0.201 (4) | 0.3075 (5) | 0.127 (6) | 0.664 (12) |
C15B | 0.635 (3) | 0.256 (6) | 0.3121 (11) | 0.109 (10) | 0.336 (12) |
C13B | 0.6968 (19) | 0.273 (3) | 0.2355 (6) | 0.112 (7) | 0.336 (12) |
C14B | 0.6793 (19) | 0.418 (3) | 0.2762 (4) | 0.094 (6) | 0.336 (12) |
H2 | 0.59683 | 0.26707 | −0.00692 | 0.0581* | |
H2A | 0.88306 | −0.45536 | −0.03755 | 0.0587* | |
H4 | 0.51425 | −0.20417 | −0.11838 | 0.0726* | |
H4A | 0.98036 | 0.06652 | 0.08074 | 0.0612* | |
H10B | 0.82826 | 0.86578 | 0.15726 | 0.0747* | |
H11A | 0.88335 | 0.71653 | 0.23276 | 0.0988* | |
H11B | 0.91888 | 0.43442 | 0.21509 | 0.0988* | |
H12A | 0.69345 | 0.62106 | 0.19818 | 0.1147* | |
H12B | 0.73346 | 0.32686 | 0.18638 | 0.1147* | |
H13A | 0.76759 | 0.53567 | 0.27726 | 0.0930* | 0.664 (12) |
H13B | 0.80392 | 0.24041 | 0.26509 | 0.0930* | 0.664 (12) |
H14A | 0.57765 | 0.41744 | 0.24905 | 0.1224* | 0.664 (12) |
H14B | 0.61727 | 0.11930 | 0.24100 | 0.1224* | 0.664 (12) |
H15A | 0.61520 | 0.36407 | 0.32492 | 0.1907* | 0.664 (12) |
H15B | 0.55311 | 0.09342 | 0.30598 | 0.1907* | 0.664 (12) |
H15C | 0.68605 | 0.09686 | 0.32190 | 0.1907* | 0.664 (12) |
H5 | 0.68764 | −0.43231 | −0.10052 | 0.0681* | |
H5A | 0.80755 | 0.52050 | 0.10849 | 0.0603* | |
H10A | 0.95894 | 0.79989 | 0.17013 | 0.0747* | |
H13C | 0.74739 | 0.11816 | 0.24371 | 0.1345* | 0.336 (12) |
H13D | 0.62469 | 0.20663 | 0.21835 | 0.1345* | 0.336 (12) |
H14C | 0.75141 | 0.49973 | 0.29030 | 0.1130* | 0.336 (12) |
H14D | 0.62625 | 0.56648 | 0.26657 | 0.1130* | 0.336 (12) |
H15D | 0.67630 | 0.30834 | 0.34164 | 0.1633* | 0.336 (12) |
H15E | 0.55557 | 0.29260 | 0.30999 | 0.1633* | 0.336 (12) |
H15F | 0.64630 | 0.06410 | 0.30749 | 0.1633* | 0.336 (12) |
U11 | U22 | U33 | U12 | U13 | U23 | |
S1 | 0.0496 (5) | 0.0958 (6) | 0.0813 (6) | 0.0104 (4) | −0.0009 (4) | −0.0106 (4) |
O1 | 0.0500 (11) | 0.0514 (10) | 0.0578 (11) | 0.0164 (8) | 0.0117 (9) | 0.0052 (8) |
O2 | 0.0754 (17) | 0.194 (3) | 0.1011 (19) | 0.0471 (16) | −0.0218 (15) | −0.0188 (19) |
O3 | 0.0657 (14) | 0.0890 (15) | 0.1102 (18) | 0.0332 (11) | 0.0215 (13) | 0.0064 (13) |
N1 | 0.0488 (15) | 0.093 (2) | 0.0701 (17) | 0.0148 (14) | 0.0096 (14) | 0.0203 (15) |
N2 | 0.0509 (13) | 0.0428 (11) | 0.0559 (13) | 0.0130 (9) | 0.0171 (10) | −0.0032 (10) |
N3 | 0.0427 (12) | 0.0470 (12) | 0.0495 (12) | 0.0089 (9) | 0.0136 (10) | 0.0063 (10) |
N4 | 0.0472 (13) | 0.0520 (13) | 0.0538 (13) | 0.0136 (9) | 0.0097 (11) | −0.0028 (10) |
N5 | 0.0474 (12) | 0.0554 (12) | 0.0465 (12) | 0.0073 (10) | 0.0054 (10) | −0.0050 (10) |
C1 | 0.0450 (15) | 0.0396 (12) | 0.0485 (14) | 0.0062 (11) | 0.0170 (12) | 0.0059 (11) |
C2 | 0.0480 (15) | 0.0466 (13) | 0.0547 (16) | 0.0125 (11) | 0.0201 (13) | 0.0062 (12) |
C3 | 0.0433 (15) | 0.0621 (17) | 0.0588 (17) | 0.0075 (12) | 0.0136 (14) | 0.0118 (14) |
C4 | 0.0526 (17) | 0.0727 (19) | 0.0545 (17) | −0.0010 (14) | 0.0062 (14) | 0.0036 (14) |
C5 | 0.0601 (18) | 0.0592 (16) | 0.0523 (16) | 0.0038 (14) | 0.0142 (14) | −0.0077 (13) |
C6 | 0.0468 (15) | 0.0418 (13) | 0.0524 (15) | 0.0066 (11) | 0.0177 (12) | 0.0059 (12) |
C7 | 0.0469 (15) | 0.0405 (13) | 0.0498 (15) | 0.0092 (11) | 0.0167 (13) | 0.0077 (12) |
C8 | 0.0432 (14) | 0.0400 (13) | 0.0475 (14) | 0.0092 (11) | 0.0153 (12) | 0.0049 (11) |
C9 | 0.0478 (15) | 0.0524 (14) | 0.0497 (15) | 0.0064 (12) | 0.0122 (12) | 0.0052 (12) |
C10 | 0.0660 (18) | 0.0582 (16) | 0.0613 (18) | 0.0066 (13) | 0.0092 (14) | −0.0105 (14) |
C11 | 0.100 (3) | 0.091 (2) | 0.057 (2) | 0.0197 (19) | 0.0171 (18) | −0.0106 (17) |
C12 | 0.108 (3) | 0.099 (3) | 0.093 (3) | 0.007 (2) | 0.053 (2) | 0.009 (2) |
C13A | 0.079 (4) | 0.104 (5) | 0.049 (4) | −0.012 (3) | 0.012 (3) | −0.008 (3) |
C14A | 0.089 (5) | 0.130 (7) | 0.090 (6) | −0.017 (4) | 0.023 (4) | 0.023 (5) |
C15A | 0.113 (9) | 0.188 (14) | 0.078 (7) | −0.020 (7) | 0.012 (6) | 0.033 (8) |
C15B | 0.112 (18) | 0.107 (12) | 0.13 (2) | 0.020 (12) | 0.079 (16) | −0.002 (12) |
C13B | 0.142 (15) | 0.096 (9) | 0.115 (13) | −0.021 (9) | 0.068 (12) | −0.024 (9) |
C14B | 0.123 (14) | 0.089 (10) | 0.081 (9) | −0.006 (8) | 0.047 (10) | −0.012 (7) |
S1—C9 | 1.647 (3) | C13A—C14A | 1.475 (10) |
O1—C7 | 1.231 (3) | C13B—C14B | 1.46 (2) |
O2—N1 | 1.214 (4) | C14A—C15A | 1.496 (18) |
O3—N1 | 1.204 (4) | C14B—C15B | 1.51 (4) |
N1—C3 | 1.465 (4) | C2—H2 | 0.9300 |
N2—C6 | 1.391 (3) | C4—H4 | 0.9300 |
N2—C7 | 1.355 (3) | C5—H5 | 0.9300 |
N3—N4 | 1.343 (3) | C10—H10A | 0.9700 |
N3—C8 | 1.298 (3) | C10—H10B | 0.9700 |
N4—C9 | 1.376 (3) | C11—H11A | 0.9700 |
N5—C9 | 1.328 (3) | C11—H11B | 0.9700 |
N5—C10 | 1.453 (3) | C12—H12A | 0.9700 |
N2—H2A | 0.8600 | C12—H12B | 0.9700 |
N4—H4A | 0.8600 | C13A—H13A | 0.9700 |
N5—H5A | 0.8600 | C13A—H13B | 0.9700 |
C1—C2 | 1.389 (3) | C13B—H13D | 0.9700 |
C1—C8 | 1.439 (3) | C13B—H13C | 0.9700 |
C1—C6 | 1.400 (3) | C14A—H14B | 0.9700 |
C2—C3 | 1.371 (4) | C14A—H14A | 0.9700 |
C3—C4 | 1.383 (4) | C14B—H14C | 0.9700 |
C4—C5 | 1.375 (3) | C14B—H14D | 0.9700 |
C5—C6 | 1.378 (3) | C15A—H15B | 0.9600 |
C7—C8 | 1.485 (3) | C15A—H15C | 0.9600 |
C10—C11 | 1.503 (4) | C15A—H15A | 0.9600 |
C11—C12 | 1.470 (5) | C15B—H15D | 0.9600 |
C12—C13B | 1.524 (18) | C15B—H15E | 0.9600 |
C12—C13A | 1.547 (7) | C15B—H15F | 0.9600 |
S1···C11 | 3.636 (4) | C15A···H5xii | 3.0200 |
S1···H10A | 2.7700 | C15B···H5xii | 3.0200 |
S1···H11B | 3.1100 | H2···O3vi | 2.5200 |
S1···H13Ai | 3.0000 | H2···O3 | 2.4400 |
S1···H15Cii | 2.9000 | H2A···O1v | 2.0800 |
S1···H14Ci | 2.9700 | H2A···C7v | 3.0700 |
O1···N3 | 3.008 (3) | H4···O2 | 2.3900 |
O1···N4 | 2.721 (2) | H4A···O1 | 2.0200 |
O1···C9iii | 3.246 (3) | H4A···C7 | 2.4200 |
O1···C7iv | 3.001 (3) | H5···H15Cxiii | 2.4600 |
O1···O1iv | 3.223 (2) | H5···C15Bxiii | 3.0200 |
O1···N2v | 2.871 (3) | H5···C15Axiii | 3.0200 |
O1···C8iv | 3.289 (3) | H5···H15Dxiii | 2.5100 |
O2···C10vi | 3.232 (4) | H5A···N3 | 2.3200 |
O3···C4vii | 3.317 (3) | H5A···O2vi | 2.7600 |
O3···C1viii | 3.295 (3) | H5A···O3vi | 2.8600 |
O1···H4A | 2.0200 | H10A···S1 | 2.7700 |
O1···H2Av | 2.0800 | H10B···O2vi | 2.4800 |
O2···H10Bvi | 2.4800 | H10B···H12A | 2.5100 |
O2···H12Avi | 2.9100 | H11A···H13A | 2.2800 |
O2···H5Avi | 2.7600 | H11B···S1 | 3.1100 |
O2···H4 | 2.3900 | H11B···H13B | 2.4100 |
O3···H2 | 2.4400 | H11B···C9 | 2.9900 |
O3···H2vi | 2.5200 | H12A···H10B | 2.5100 |
O3···H5Avi | 2.8600 | H12A···H14D | 2.3600 |
N2···O1v | 2.871 (3) | H12A···O2vi | 2.9100 |
N3···O1 | 3.008 (3) | H12A···H14A | 2.4600 |
N3···N5 | 2.688 (3) | H12B···N5 | 2.8300 |
N3···C7vii | 3.408 (3) | H12B···H14B | 2.5500 |
N4···O1 | 2.721 (2) | H13A···H11A | 2.2800 |
N5···N3 | 2.688 (3) | H13A···S1ii | 3.0000 |
N3···H5A | 2.3200 | H13B···H15C | 2.5100 |
N5···H12B | 2.8300 | H13B···H11B | 2.4100 |
C1···O3viii | 3.295 (3) | H13C···H15F | 2.4600 |
C2···C5vii | 3.421 (3) | H14A···C14Axi | 3.0500 |
C4···O3iii | 3.317 (3) | H14A···C15Axi | 2.9800 |
C5···C2iii | 3.421 (3) | H14A···H15Bxi | 2.2100 |
C7···N3iii | 3.408 (3) | H14A···H14Bxi | 2.6000 |
C7···C7iv | 3.264 (3) | H14A···H12A | 2.4600 |
C7···O1iv | 3.001 (3) | H14B···H12B | 2.5500 |
C8···O1iv | 3.289 (3) | H14B···H14Ax | 2.6000 |
C9···O1vii | 3.246 (3) | H14C···C11 | 3.0600 |
C10···O2vi | 3.232 (4) | H14C···S1ii | 2.9700 |
C11···S1 | 3.636 (4) | H14D···H12A | 2.3600 |
C4···H15Dix | 3.0900 | H15A···C4xiv | 3.0200 |
C4···H15Aix | 3.0200 | H15B···C14Ax | 3.1000 |
C7···H2Av | 3.0700 | H15B···H14Ax | 2.2100 |
C7···H4A | 2.4200 | H15C···S1i | 2.9000 |
C9···H11B | 2.9900 | H15C···H5xii | 2.4600 |
C11···H14C | 3.0600 | H15C···H13B | 2.5100 |
C14A···H14Ax | 3.0500 | H15D···C4xiv | 3.0900 |
C14A···H15Bxi | 3.1000 | H15D···H5xii | 2.5100 |
C15A···H14Ax | 2.9800 | H15F···H13C | 2.4600 |
O2—N1—O3 | 122.9 (3) | N5—C10—H10B | 109.00 |
O2—N1—C3 | 117.8 (3) | C11—C10—H10A | 109.00 |
O3—N1—C3 | 119.3 (3) | C11—C10—H10B | 109.00 |
C6—N2—C7 | 111.42 (19) | H10A—C10—H10B | 108.00 |
N4—N3—C8 | 116.6 (2) | C10—C11—H11A | 108.00 |
N3—N4—C9 | 122.4 (2) | C10—C11—H11B | 108.00 |
C9—N5—C10 | 123.0 (2) | C12—C11—H11A | 108.00 |
C7—N2—H2A | 124.00 | C12—C11—H11B | 108.00 |
C6—N2—H2A | 124.00 | H11A—C11—H11B | 107.00 |
N3—N4—H4A | 119.00 | C11—C12—H12A | 110.00 |
C9—N4—H4A | 119.00 | C11—C12—H12B | 110.00 |
C10—N5—H5A | 119.00 | C13A—C12—H12A | 110.00 |
C9—N5—H5A | 119.00 | C13A—C12—H12B | 110.00 |
C2—C1—C6 | 119.3 (2) | H12A—C12—H12B | 109.00 |
C6—C1—C8 | 106.66 (19) | C13B—C12—H12A | 107.00 |
C2—C1—C8 | 134.1 (2) | C13B—C12—H12B | 79.00 |
C1—C2—C3 | 117.4 (2) | C12—C13A—H13A | 109.00 |
C2—C3—C4 | 123.4 (2) | C12—C13A—H13B | 109.00 |
N1—C3—C4 | 118.0 (2) | C14A—C13A—H13A | 109.00 |
N1—C3—C2 | 118.5 (2) | C14A—C13A—H13B | 109.00 |
C3—C4—C5 | 119.7 (2) | H13A—C13A—H13B | 108.00 |
C4—C5—C6 | 117.9 (2) | H13C—C13B—H13D | 109.00 |
N2—C6—C1 | 109.2 (2) | C12—C13B—H13C | 110.00 |
N2—C6—C5 | 128.4 (2) | C12—C13B—H13D | 110.00 |
C1—C6—C5 | 122.4 (2) | C14B—C13B—H13C | 110.00 |
O1—C7—C8 | 127.0 (2) | C14B—C13B—H13D | 110.00 |
O1—C7—N2 | 127.0 (2) | C15A—C14A—H14A | 109.00 |
N2—C7—C8 | 106.1 (2) | C15A—C14A—H14B | 108.00 |
N3—C8—C1 | 126.2 (2) | C13A—C14A—H14B | 108.00 |
N3—C8—C7 | 127.1 (2) | C13A—C14A—H14A | 108.00 |
C1—C8—C7 | 106.71 (19) | H14A—C14A—H14B | 107.00 |
N4—C9—N5 | 116.3 (2) | C13B—C14B—H14C | 108.00 |
S1—C9—N5 | 126.8 (2) | C13B—C14B—H14D | 108.00 |
S1—C9—N4 | 116.98 (18) | H14C—C14B—H14D | 107.00 |
N5—C10—C11 | 112.8 (2) | C15B—C14B—H14D | 108.00 |
C10—C11—C12 | 115.6 (3) | C15B—C14B—H14C | 108.00 |
C11—C12—C13B | 135.4 (8) | C14A—C15A—H15C | 110.00 |
C11—C12—C13A | 106.3 (3) | C14A—C15A—H15B | 110.00 |
C12—C13A—C14A | 111.5 (5) | H15B—C15A—H15C | 110.00 |
C12—C13B—C14B | 106.4 (11) | H15A—C15A—H15B | 109.00 |
C13A—C14A—C15A | 115.4 (9) | H15A—C15A—H15C | 109.00 |
C13B—C14B—C15B | 117.9 (17) | C14A—C15A—H15A | 109.00 |
C1—C2—H2 | 121.00 | C14B—C15B—H15D | 109.00 |
C3—C2—H2 | 121.00 | C14B—C15B—H15E | 110.00 |
C3—C4—H4 | 120.00 | C14B—C15B—H15F | 109.00 |
C5—C4—H4 | 120.00 | H15D—C15B—H15E | 110.00 |
C4—C5—H5 | 121.00 | H15D—C15B—H15F | 109.00 |
C6—C5—H5 | 121.00 | H15E—C15B—H15F | 110.00 |
N5—C10—H10A | 109.00 | ||
O2—N1—C3—C2 | −177.7 (3) | C8—C1—C6—C5 | −179.2 (2) |
O2—N1—C3—C4 | 2.9 (4) | C2—C1—C8—N3 | −2.5 (4) |
O3—N1—C3—C2 | 1.3 (4) | C2—C1—C8—C7 | 179.8 (2) |
O3—N1—C3—C4 | −178.1 (3) | C6—C1—C8—N3 | 177.5 (2) |
C7—N2—C6—C1 | −0.2 (3) | C6—C1—C8—C7 | −0.2 (2) |
C7—N2—C6—C5 | 179.2 (2) | C1—C2—C3—N1 | −179.6 (2) |
C6—N2—C7—O1 | −179.0 (2) | C1—C2—C3—C4 | −0.2 (4) |
C6—N2—C7—C8 | 0.1 (3) | N1—C3—C4—C5 | 179.7 (2) |
C8—N3—N4—C9 | 178.2 (2) | C2—C3—C4—C5 | 0.3 (4) |
N4—N3—C8—C1 | −176.8 (2) | C3—C4—C5—C6 | 0.2 (4) |
N4—N3—C8—C7 | 0.5 (3) | C4—C5—C6—N2 | 179.9 (2) |
N3—N4—C9—S1 | −172.11 (18) | C4—C5—C6—C1 | −0.7 (4) |
N3—N4—C9—N5 | 8.0 (3) | O1—C7—C8—N3 | 1.5 (4) |
C10—N5—C9—S1 | −4.1 (4) | O1—C7—C8—C1 | 179.2 (2) |
C10—N5—C9—N4 | 175.8 (2) | N2—C7—C8—N3 | −177.6 (2) |
C9—N5—C10—C11 | −83.5 (3) | N2—C7—C8—C1 | 0.1 (2) |
C6—C1—C2—C3 | −0.3 (3) | N5—C10—C11—C12 | −65.1 (3) |
C8—C1—C2—C3 | 179.7 (2) | C10—C11—C12—C13A | −173.3 (4) |
C2—C1—C6—N2 | −179.7 (2) | C11—C12—C13A—C14A | 178.4 (6) |
C2—C1—C6—C5 | 0.8 (3) | C12—C13A—C14A—C15A | −175.7 (10) |
C8—C1—C6—N2 | 0.3 (2) |
Symmetry codes: (i) −x+2, y−1/2, −z+1/2; (ii) −x+2, y+1/2, −z+1/2; (iii) x, y−1, z; (iv) −x+2, −y, −z; (v) −x+2, −y−1, −z; (vi) −x+1, −y+1, −z; (vii) x, y+1, z; (viii) −x+1, −y, −z; (ix) x, −y+1/2, z−1/2; (x) −x+1, y−1/2, −z+1/2; (xi) −x+1, y+1/2, −z+1/2; (xii) x, −y−1/2, z+1/2; (xiii) x, −y−1/2, z−1/2; (xiv) x, −y+1/2, z+1/2. |
D—H···A | D—H | H···A | D···A | D—H···A |
N2—H2A···O1v | 0.8600 | 2.0800 | 2.871 (3) | 153.00 |
N4—H4A···O1 | 0.8600 | 2.0200 | 2.721 (2) | 138.00 |
N5—H5A···N3 | 0.8600 | 2.3200 | 2.688 (3) | 106.00 |
C2—H2···O3vi | 0.9300 | 2.5200 | 3.438 (3) | 167.00 |
C10—H10A···S1 | 0.9700 | 2.7700 | 3.107 (3) | 101.00 |
C10—H10B···O2vi | 0.9700 | 2.4800 | 3.232 (4) | 134.00 |
C7—O1···Cg1iv | 1.23 (1) | 3.25 (1) | 3.896 (3) | 113 (1) |
N1—O3···Cg1viii | 1.20 (1) | 3.65 (1) | 4.201 (3) | 109 (1) |
N1—O3···Cg2viii | 1.20 (1) | 3.65 (1) | 4.192 (3) | 109 (1) |
Symmetry codes: (iv) −x+2, −y, −z; (v) −x+2, −y−1, −z; (vi) −x+1, −y+1, −z; (viii) −x+1, −y, −z. |
Experimental details
Crystal data | |
Chemical formula | C15H19N5O3S |
Mr | 349.42 |
Crystal system, space group | Monoclinic, P21/c |
Temperature (K) | 296 |
a, b, c (Å) | 11.9464 (6), 4.8845 (3), 29.9688 (17) |
β (°) | 101.131 (3) |
V (Å3) | 1715.85 (17) |
Z | 4 |
Radiation type | Mo Kα |
µ (mm−1) | 0.21 |
Crystal size (mm) | 0.26 × 0.14 × 0.12 |
Data collection | |
Diffractometer | Bruker Kappa APEXII CCD |
Absorption correction | Multi-scan (SADABS; Bruker, 2005) |
Tmin, Tmax | 0.963, 0.974 |
No. of measured, independent and observed [I > 2σ(I)] reflections | 19438, 4283, 1964 |
Rint | 0.062 |
(sin θ/λ)max (Å−1) | 0.667 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.054, 0.143, 1.00 |
No. of reflections | 4283 |
No. of parameters | 247 |
No. of restraints | 6 |
H-atom treatment | H-atom parameters constrained |
Δρmax, Δρmin (e Å−3) | 0.18, −0.21 |
Computer programs: APEX2 (Bruker, 2007), SAINT (Bruker, 2007), SHELXS97 (Sheldrick, 2008), SHELXL97 (Sheldrick, 2008), ORTEP-3 for Windows (Farrugia, 1997) and PLATON (Spek, 2009), WinGX (Farrugia, 1999) and PLATON (Spek, 2009).
D—H···A | D—H | H···A | D···A | D—H···A |
N2—H2A···O1i | 0.8600 | 2.0800 | 2.871 (3) | 153.00 |
N4—H4A···O1 | 0.8600 | 2.0200 | 2.721 (2) | 138.00 |
N5—H5A···N3 | 0.8600 | 2.3200 | 2.688 (3) | 106.00 |
C2—H2···O3ii | 0.9300 | 2.5200 | 3.438 (3) | 167.00 |
C10—H10A···S1 | 0.9700 | 2.7700 | 3.107 (3) | 101.00 |
C10—H10B···O2ii | 0.9700 | 2.4800 | 3.232 (4) | 134.00 |
C7—O1···Cg1iii | 1.231 (3) | 3.245 (2) | 3.896 (3) | 113.13 (13) |
N1—O3···Cg1iv | 1.204 (4) | 3.646 (2) | 4.201 (3) | 109.29 (18) |
N1—O3···Cg2iv | 1.204 (4) | 3.652 (3) | 4.192 (3) | 108.50 (19) |
Symmetry codes: (i) −x+2, −y−1, −z; (ii) −x+1, −y+1, −z; (iii) −x+2, −y, −z; (iv) −x+1, −y, −z. |
Acknowledgements
NM greatfully acknowledges the Higher Education Commission, Islamabad, Pakistan, for providing her with a Scholarship under the Indigenous PhD Program and also for partial funding of this research work.
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.
Isatin and its derivatives are known to possess a broad spectrum of pharmacological properties including antibacterial, anticonvulsant, antifungal, antineoplastic, antiviral, and enzymatic inhibition (Beauchard et al. 2006; Hyatt et al. 2007). Amongst these, isatins-derived thiosemicarbazones have gained a great deal of attention (Beauchard et al., 2006; Quenelle et al., 2006; Karali et al., 2007). Very recently, a number of N(4)-arylsubstituted isatin-3-thiosemicarbazones have been synthesized and reported as potent urease (a nickel-dependent metallo-enzyme) inhibitors (Pervez et al., 2008; Pervez et al., 2009). In continuation to the development of potent and non- or less toxic urease inhibitors, we report herein the crystal structure and preparation of the title compound (I, Fig. 1).
The crystal structure of (II) Indole-2,3-dione 3-(N(4)-ethylthiosemicarbazone) (N'-2-(Thienylidene))benzhydrazide (Bain et al., 1997) has been published. The title compound (I) differs from (II) due to hexyl moiety instead of ethyl moiety.
The molecules of the title compound consist of dimers owing to N–H···O type of intermolecular H-bondings forming R22(8) ring motifs (Bernstein et al., 1995). The molecules are interlinked in the form of polymeric chains due to C—H···O type of intermolecular H-bondings (Table 1, Fig. 2). There exist two S(5) and a S(6), R22(10) and R33(12) or R22(13) ring motifs as well (Fig. 2). In the title compound the group (C1—C9/N1—N5/O—O3) of the isatin moiety along with nitro substitution is planar with maximum r.m.s. deviation of 0.0348 Å from the mean square plane and the sulphur atom S1 is at a distance of -0.3497 (16) Å from this mean square plane. The terminating three carbons of the hexyl group are disordered over two sites with occupancy ratio of 0.664 (12):0.336 (12). The C==O···π and N—O···π interactions (Table 1), may also be responsible for stabilizing of the molecules.