organic compounds
2-(5-Iodo-2-oxoindolin-3-ylidene)hydrazinecarbothioamide including an unknown solvate
aEscola de Química e Alimentos, Universidade Federal do Rio Grande, Av. Itália, km 08, Campus Carreiros, 96203-900, Rio Grande, RS, Brazil, and bDepartamento de Química, Universidade Federal de Santa Maria, Av. Roraima, Campus, 97105-900, Santa Maria, RS, Brazil
*Correspondence e-mail: vanessa.gervini@gmail.com
The molecule of the title compound, C9H7IN4OS, is almost planar (r.m.s. deviation = 0.0373 Å). In the molecule, N—H⋯N and N—H⋯O hydrogen bonds generate, respectively, S(5) and S(6) ring motifs. In the crystal, molecules are linked via N—H⋯O hydrogen bonds, forming chains propagating along [010]. These chains are linked via S⋯I contacts [3.4915 (16) Å], forming sheets lying parallel to (100). A region of disordered electron density, probably a disordered tetrahydrofuran solvent molecule, was treated using the SQUEEZE routine in PLATON [Spek (2009). Acta Cryst. D65, 148–155]. The formula mass and unit-cell characteristics were not taken into account during refinement.
CCDC reference: 1002200
Related literature
For the synthesis, see: Chiyanzu et al. (2003). For applications, see: Silva et al. (2001); Chiyanzu et al. (2003). For similar structures, see: de Bittencourt et al. (2014); Bandeira et al. (2013); de Oliveira et al. (2012). For S⋯I interactions, see: Auffinger et al. (2004).
Experimental
Crystal data
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Data collection: APEX2 (Bruker, 2009); cell SAINT (Bruker, 2009); data reduction: SAINT; program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: DIAMOND (Brandenburg, 2006); software used to prepare material for publication: publCIF (Westrip, 2010) and PLATON (Spek, 2009).
Supporting information
CCDC reference: 1002200
10.1107/S1600536814010782/bg2528sup1.cif
contains datablocks I, New_Global_Publ_Block. DOI:Structure factors: contains datablock I. DOI: 10.1107/S1600536814010782/bg2528Isup2.hkl
Supporting information file. DOI: 10.1107/S1600536814010782/bg2528Isup3.cml
To 20 ml of ethanol it was mixed 500 mg (1.83 mmol s) of 5-iodo-isatine with 170 mg (1.83 mmol s) of thiosemicarbazide. Then, it was added ten drops of glacial acetic acid and the system was kept under reflux for four hours. After this time, the reaction mixture was cooled and an orange precipitated was filtered off under vacuum and dried at room temperature. m.p. 249–253 °C. Yield: 98%. Crystallization: needle single crystals of the title compound suitable for X-ray diffraction were obtained by slow evaporating a solution containing 30 mg of the product dissolved in 5 ml of tetrahydrofuran.
All H atoms attached to C atoms were positioned with idealized geometry and were refined isotropic with Ueq(H) set to 1.2 times of the Ueq(C). It was used a riding model with aromatic C—H = 0.93 Å. Reflection 200 was omitted due to the large difference observed between Fo2 and Fc2.
The needle-like single crystals were very weakly diffracting for what an unusually large crystal (1.152mm, with a 0.6 mm collimator) was used.
Data collection: APEX2 (Bruker, 2009); cell
SAINT (Bruker, 2009); data reduction: SAINT (Bruker, 2009); program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: DIAMOND (Brandenburg, 2006); software used to prepare material for publication: publCIF (Westrip, 2010).Fig. 1. Asymmetric unit of the title compound showing intramolecular hydrogen bond interactions represented with dashed lines. Ellipsoid probability: 50%. | |
Fig. 2. Packing diagram of the title compound showing hydrogen bond network generated through interactions represented as dashed lines. Some hydrogen atoms were omitted for clarity. Symmetry codes: (i) –x, 2–y, –z; (ii) 1/2–x, -1/2 + y, 1/2–z; (iii) x, –y, 1/2 + z. | |
Fig. 3. Plot generated by PLATON showing solvent accessible voids positions in the unit cell as dashed delimited circles. |
C9H7IN4OS | F(000) = 1328 |
Mr = 346.15 | Dx = 1.826 Mg m−3 |
Monoclinic, C2/c | Melting point: 522 K |
Hall symbol: -C 2yc | Mo Kα radiation, λ = 0.71073 Å |
a = 33.765 (5) Å | Cell parameters from 9997 reflections |
b = 4.4569 (5) Å | θ = 2.4–28.3° |
c = 19.977 (3) Å | µ = 2.69 mm−1 |
β = 123.100 (4)° | T = 100 K |
V = 2518.4 (6) Å3 | Needle, yellow |
Z = 8 | 1.15 × 0.10 × 0.09 mm |
Bruker APEXII CCD diffractometer | 2892 independent reflections |
Radiation source: fine-focus sealed tube | 2577 reflections with I > 2σ(I) |
Graphite monochromator | Rint = 0.036 |
ϕ and ω scans | θmax = 28.3°, θmin = 2.0° |
Absorption correction: numerical (SADABS; Bruker, 2009) | h = −44→44 |
Tmin = 0.701, Tmax = 0.777 | k = −3→5 |
18679 measured reflections | l = −26→26 |
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) = 0.062 | H atoms treated by a mixture of independent and constrained refinement |
S = 1.05 | w = 1/[σ2(Fo2) + (0.0208P)2 + 10.8261P] where P = (Fo2 + 2Fc2)/3 |
2892 reflections | (Δ/σ)max = 0.001 |
161 parameters | Δρmax = 1.50 e Å−3 |
0 restraints | Δρmin = −1.52 e Å−3 |
C9H7IN4OS | V = 2518.4 (6) Å3 |
Mr = 346.15 | Z = 8 |
Monoclinic, C2/c | Mo Kα radiation |
a = 33.765 (5) Å | µ = 2.69 mm−1 |
b = 4.4569 (5) Å | T = 100 K |
c = 19.977 (3) Å | 1.15 × 0.10 × 0.09 mm |
β = 123.100 (4)° |
Bruker APEXII CCD diffractometer | 2892 independent reflections |
Absorption correction: numerical (SADABS; Bruker, 2009) | 2577 reflections with I > 2σ(I) |
Tmin = 0.701, Tmax = 0.777 | Rint = 0.036 |
18679 measured reflections |
R[F2 > 2σ(F2)] = 0.028 | 0 restraints |
wR(F2) = 0.062 | H atoms treated by a mixture of independent and constrained refinement |
S = 1.05 | w = 1/[σ2(Fo2) + (0.0208P)2 + 10.8261P] where P = (Fo2 + 2Fc2)/3 |
2892 reflections | Δρmax = 1.50 e Å−3 |
161 parameters | Δρmin = −1.52 e Å−3 |
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 | ||
C6 | 0.20209 (11) | 0.5198 (5) | 0.48073 (18) | 0.0190 (6) | |
H6 | 0.2160 | 0.3772 | 0.4658 | 0.023* | |
C7 | 0.22592 (10) | 0.6149 (6) | 0.55978 (17) | 0.0168 (5) | |
H7 | 0.2555 | 0.5382 | 0.5981 | 0.020* | |
C5 | 0.15782 (10) | 0.6347 (6) | 0.42365 (16) | 0.0170 (6) | |
H41 | 0.2442 (12) | 0.924 (7) | 0.693 (2) | 0.016 (8)* | |
H21 | 0.1270 (13) | 1.502 (7) | 0.631 (2) | 0.023 (9)* | |
H11 | 0.0129 (12) | 1.770 (7) | 0.4600 (19) | 0.019 (8)* | |
H12 | 0.0403 (15) | 1.560 (9) | 0.449 (3) | 0.043 (12)* | |
I1 | 0.125098 (8) | 0.47387 (4) | 0.306159 (11) | 0.02521 (7) | |
S1 | 0.06378 (3) | 1.88628 (14) | 0.62093 (4) | 0.01889 (15) | |
O1 | 0.19376 (7) | 1.3146 (4) | 0.70372 (11) | 0.0168 (4) | |
N4 | 0.22091 (9) | 0.9605 (5) | 0.65344 (15) | 0.0145 (5) | |
N3 | 0.11031 (8) | 1.3194 (4) | 0.53273 (13) | 0.0130 (4) | |
C9 | 0.18938 (9) | 1.1590 (5) | 0.64912 (16) | 0.0137 (5) | |
C1 | 0.06744 (9) | 1.6773 (5) | 0.55453 (16) | 0.0140 (5) | |
N1 | 0.03597 (10) | 1.6699 (6) | 0.47747 (15) | 0.0209 (5) | |
C3 | 0.15944 (9) | 0.9428 (5) | 0.52186 (16) | 0.0127 (5) | |
N2 | 0.10679 (9) | 1.5041 (4) | 0.58282 (15) | 0.0145 (5) | |
C8 | 0.20411 (9) | 0.8269 (5) | 0.57920 (15) | 0.0133 (5) | |
C2 | 0.14815 (9) | 1.1580 (5) | 0.56399 (15) | 0.0127 (5) | |
C4 | 0.13579 (10) | 0.8471 (5) | 0.44356 (16) | 0.0143 (5) | |
H4 | 0.1061 | 0.9222 | 0.4053 | 0.017* |
U11 | U22 | U33 | U12 | U13 | U23 | |
C6 | 0.0251 (17) | 0.0160 (11) | 0.0226 (17) | 0.0021 (10) | 0.0173 (14) | 0.0005 (9) |
C7 | 0.0115 (15) | 0.0176 (11) | 0.0198 (15) | 0.0015 (9) | 0.0076 (12) | 0.0034 (9) |
C5 | 0.0212 (16) | 0.0181 (11) | 0.0129 (15) | −0.0041 (10) | 0.0101 (13) | −0.0011 (9) |
I1 | 0.04097 (15) | 0.02153 (9) | 0.01480 (12) | −0.00098 (7) | 0.01630 (11) | −0.00167 (6) |
S1 | 0.0206 (4) | 0.0199 (3) | 0.0160 (4) | 0.0050 (2) | 0.0099 (3) | 0.0011 (2) |
O1 | 0.0125 (10) | 0.0216 (9) | 0.0106 (10) | −0.0011 (7) | 0.0026 (8) | −0.0027 (7) |
N4 | 0.0091 (13) | 0.0177 (10) | 0.0095 (13) | 0.0006 (8) | 0.0005 (11) | 0.0010 (8) |
N3 | 0.0119 (12) | 0.0143 (9) | 0.0125 (12) | −0.0011 (8) | 0.0065 (10) | −0.0002 (7) |
C9 | 0.0106 (14) | 0.0153 (11) | 0.0124 (14) | −0.0029 (9) | 0.0044 (12) | 0.0013 (9) |
C1 | 0.0101 (14) | 0.0154 (11) | 0.0160 (15) | −0.0001 (9) | 0.0068 (12) | 0.0019 (9) |
N1 | 0.0137 (14) | 0.0276 (12) | 0.0147 (14) | 0.0078 (10) | 0.0034 (11) | −0.0008 (9) |
C3 | 0.0110 (14) | 0.0139 (10) | 0.0123 (14) | −0.0017 (9) | 0.0057 (12) | 0.0019 (8) |
N2 | 0.0130 (13) | 0.0168 (10) | 0.0091 (13) | 0.0007 (8) | 0.0030 (10) | −0.0001 (8) |
C8 | 0.0117 (14) | 0.0144 (10) | 0.0111 (14) | −0.0011 (9) | 0.0044 (11) | 0.0020 (9) |
C2 | 0.0131 (14) | 0.0135 (10) | 0.0090 (13) | −0.0025 (9) | 0.0043 (11) | 0.0008 (8) |
C4 | 0.0119 (14) | 0.0159 (11) | 0.0110 (14) | −0.0025 (9) | 0.0036 (11) | 0.0010 (9) |
C6—C7 | 1.390 (4) | N3—C2 | 1.292 (3) |
C6—C5 | 1.391 (4) | N3—N2 | 1.350 (3) |
C6—H6 | 0.9300 | C9—C2 | 1.498 (4) |
C7—C8 | 1.378 (4) | C1—N1 | 1.309 (4) |
C7—H7 | 0.9300 | C1—N2 | 1.364 (3) |
C5—C4 | 1.389 (4) | N1—H11 | 0.79 (3) |
C5—I1 | 2.100 (3) | N1—H12 | 0.82 (4) |
S1—C1 | 1.680 (3) | C3—C4 | 1.379 (4) |
O1—C9 | 1.232 (3) | C3—C8 | 1.402 (4) |
N4—C9 | 1.350 (3) | C3—C2 | 1.457 (3) |
N4—C8 | 1.399 (3) | N2—H21 | 0.83 (4) |
N4—H41 | 0.77 (3) | C4—H4 | 0.9300 |
C7—C6—C5 | 121.0 (2) | C1—N1—H11 | 118 (2) |
C7—C6—H6 | 119.5 | C1—N1—H12 | 119 (3) |
C5—C6—H6 | 119.5 | H11—N1—H12 | 122 (4) |
C6—C7—C8 | 117.5 (3) | C4—C3—C8 | 120.7 (2) |
C6—C7—H7 | 121.2 | C4—C3—C2 | 133.3 (3) |
C8—C7—H7 | 121.2 | C8—C3—C2 | 105.9 (2) |
C6—C5—C4 | 121.3 (2) | N3—N2—C1 | 119.9 (2) |
C6—C5—I1 | 117.67 (19) | N3—N2—H21 | 121 (2) |
C4—C5—I1 | 121.0 (2) | C1—N2—H21 | 119 (2) |
C9—N4—C8 | 111.2 (2) | C7—C8—N4 | 128.4 (3) |
C9—N4—H41 | 122 (2) | C7—C8—C3 | 121.6 (2) |
C8—N4—H41 | 127 (2) | N4—C8—C3 | 110.0 (2) |
C2—N3—N2 | 116.5 (2) | N3—C2—C3 | 126.1 (2) |
O1—C9—N4 | 127.1 (3) | N3—C2—C9 | 127.4 (2) |
O1—C9—C2 | 126.5 (2) | C3—C2—C9 | 106.5 (2) |
N4—C9—C2 | 106.4 (2) | C3—C4—C5 | 117.8 (2) |
N1—C1—N2 | 117.0 (2) | C3—C4—H4 | 121.1 |
N1—C1—S1 | 125.4 (2) | C5—C4—H4 | 121.1 |
N2—C1—S1 | 117.5 (2) | ||
C5—C6—C7—C8 | −0.1 (4) | C2—C3—C8—N4 | −0.6 (3) |
C7—C6—C5—C4 | −0.3 (4) | N2—N3—C2—C3 | 179.7 (2) |
C7—C6—C5—I1 | −179.88 (19) | N2—N3—C2—C9 | −2.1 (4) |
C8—N4—C9—O1 | −179.3 (2) | C4—C3—C2—N3 | −1.1 (5) |
C8—N4—C9—C2 | −0.5 (3) | C8—C3—C2—N3 | 178.9 (2) |
C2—N3—N2—C1 | −178.7 (2) | C4—C3—C2—C9 | −179.7 (3) |
N1—C1—N2—N3 | −4.7 (3) | C8—C3—C2—C9 | 0.3 (3) |
S1—C1—N2—N3 | 176.33 (18) | O1—C9—C2—N3 | 0.4 (4) |
C6—C7—C8—N4 | −178.9 (2) | N4—C9—C2—N3 | −178.4 (2) |
C6—C7—C8—C3 | 0.3 (4) | O1—C9—C2—C3 | 179.0 (2) |
C9—N4—C8—C7 | −180.0 (2) | N4—C9—C2—C3 | 0.1 (3) |
C9—N4—C8—C3 | 0.7 (3) | C8—C3—C4—C5 | −0.4 (4) |
C4—C3—C8—C7 | 0.0 (4) | C2—C3—C4—C5 | 179.5 (3) |
C2—C3—C8—C7 | −180.0 (2) | C6—C5—C4—C3 | 0.5 (4) |
C4—C3—C8—N4 | 179.4 (2) | I1—C5—C4—C3 | −179.85 (18) |
D—H···A | D—H | H···A | D···A | D—H···A |
N1—H12···N3 | 0.85 (4) | 2.28 (4) | 2.633 (3) | 105 (3) |
N2—H21···O1 | 0.83 (4) | 2.07 (4) | 2.725 (3) | 135 (3) |
N4—H41···O1i | 0.77 (3) | 2.04 (4) | 2.809 (3) | 178 (3) |
N1—H11···S1ii | 0.79 (3) | 2.66 (4) | 3.448 (3) | 170 (3) |
Symmetry codes: (i) −x+1/2, y−1/2, −z+3/2; (ii) −x, −y+4, −z+1. |
D—H···A | D—H | H···A | D···A | D—H···A |
N1—H12···N3 | 0.85 (4) | 2.28 (4) | 2.633 (3) | 105 (3) |
N2—H21···O1 | 0.83 (4) | 2.07 (4) | 2.725 (3) | 135 (3) |
N4—H41···O1i | 0.77 (3) | 2.04 (4) | 2.809 (3) | 178 (3) |
N1—H11···S1ii | 0.79 (3) | 2.66 (4) | 3.448 (3) | 170 (3) |
Symmetry codes: (i) −x+1/2, y−1/2, −z+3/2; (ii) −x, −y+4, −z+1. |
Acknowledgements
We gratefully acknowledge Professor Dr Manfredo Hörner (Federal University of Santa Maria, Brazil) for his help and support with the X-ray measurements. We also acknowledge financial support through the DECIT/SCTIE-MS-CNPq-FAPERGS-Pronem-# 11/2029–1 and PRONEX-CNPq-FAPERGS projects.
References
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Isatins and their derivatives are described as compounds with technological applications, such as organic analytical chemistry and pigments and dyes (Silva et al., 2001). Particularly, halogen substituted isatins containing thiosemicarbazone fragment demonstrated biological activity against some trypanosomes (cruzain and rhodesain) and malaria (falcipain-2) parasites (Chiyanzu et al., 2003). In this paper, we describe the crystal structure of 2-(5-Iodo-2-oxoindolin-3-ylidene)-hydrazinecarbothioamide, C9H7ON4SI. There is one molecule in the asymmetric unit (Figure 1), and it is very similar to that of the Cl analogue previously published by us (de Bittencourt et al., 2014). The molecule is almost planar (Bandeira et al., 2013; de Oliveira et al., 2012), displaying a r.m.s. deviation of 0.0373 Å for all fitted non-hydrogenoid atoms (with maximum deviation of 0.1057 (12) observed for S1 atom). Although the same intramolecular S(5) and S(6) ring motifs are verified (Table 1), the crystal packing differs totally when compared with the chloro substituted analog. In the present case, co-operative dimmers are formed through N1—H11···S1i interactions displaying distances of 2.67 (4) Å. The crystal structure is expanded along the [010] crystallographic direction through N4—H41···O1ii interactions with distances of 2.08 (4) Å, generating a one-dimensional polymer-like motif. One of the most interesting features are the S···Iiii contacts which further connects the molecules along the [001] crystallographic direction, presenting distances of 3.4915 (16) Å (Figure 2, symmetry codes: (i) –x, 2–y, –z; (ii) 1/2–x, -1/2 + y, 1/2–z; (iii) x, –y, 1/2 + z). Such S···I short interactions are related to be present in sulfur-containing proteins like cysteine and methionine (Auffinger et al., 2004), being mentioned to play an important hole in biological systems. As a second interesting feature, it was noted disordered solvent molecules occupying accessible voids of 83 Å3, suggestive of tetrahydrofuran, which was indeed used for crystallization. Due to this, collected data was treated using the SQUEEZE routine of the PLATON software (Spek, 2009) in order to remove solvent electronic density. The new HKP file generated was then used for further refinement of the final solvent free crystal structure. For solvent-voids position assignement in the unit cell, a solvent plot calculated by PLATON is shown in Figure 3.