organic compounds
3-Cyclohexyl-2-thioxo-1,3-thiazolidin-4-one
aDepartment of Chemistry, Government College University, Lahore, Pakistan, and bDepartment of Physics, University of Sargodha, Sargodha, Pakistan
*Correspondence e-mail: dmntahir_uos@yahoo.com
In the title compound, C9H13NOS2, the complete molecule is generated by crystallographic mirror symmetry, with all the non-H atoms of the rhodanine (2-thioxo-1,3-thiazolidin-4-one) system and two C atoms of the cyclohexyl ring lying on the reflecting plane. The conformation is stabilized by intramolecular C—H⋯O and C—H⋯S interactions. In the crystal, weak π–π interactions at a distance of 3.8140 (5) Å between the centroids of the heterocyclic rings occur.
Related literature
For related structures, see: Shahwar et al. (2009a,b,c,d). For graph-set notation, 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 (Farrugia, 1997) and PLATON (Spek, 2009); software used to prepare material for publication: WinGX (Farrugia, 1999) and PLATON.
Supporting information
10.1107/S1600536809045851/hb5207sup1.cif
contains datablocks global, I. DOI:Structure factors: contains datablock I. DOI: 10.1107/S1600536809045851/hb5207Isup2.hkl
The title compound was prepared by a three step reaction procedure. In the first step cyclohexylamine (9.9 g, 0.1 mol) and triethylamine (50.5 g, 0.5 mol) were stirred in ethanol (20 ml) followed by dropwise addition of CS2 (15.2 g, 0.2 mol) while keeping the flask in an ice bath. The precipitate obtained were filtered off and washed with diethyl ether.
In second step, a solution of sodium chloroacetate (11.6 g, 0.1 mol) and chloroacetic acid (18.9 g, 0.2 mol) was prepared in 50 ml distilled water. To this solution the precipitates obtained in first step were added gradually and stirred at 273 K. This mixture was stirred untill it turned clear yellow.
In third step the yellow mixture was mixed in 140 ml hot (363–368 K) hydrochloric acid (6 N) and stirred for five minutes to obtain colorless crystalline precipitates. These precipitates were recrystalized in chloroform to get colourless prisms of (I).
The coordinates of H2 were refined. The other H-atoms were positioned geometrically (C–H = 0.97–0.98 Å) and refined as riding with Uiso(H) = 1.2Ueq(C).
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 (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 displacement ellipsoids drawn at the 50% probability level. The dotted lines represen the intramolecular H-bonds. |
C9H13NOS2 | F(000) = 228 |
Mr = 215.32 | Dx = 1.382 Mg m−3 |
Monoclinic, P21/m | Mo Kα radiation, λ = 0.71073 Å |
Hall symbol: -P 2yb | Cell parameters from 1390 reflections |
a = 7.3897 (3) Å | θ = 2.9–28.4° |
b = 7.0999 (4) Å | µ = 0.48 mm−1 |
c = 10.3399 (5) Å | T = 296 K |
β = 107.535 (2)° | Prism, colourless |
V = 517.29 (4) Å3 | 0.36 × 0.25 × 0.23 mm |
Z = 2 |
Bruker Kappa APEXII CCD diffractometer | 1390 independent reflections |
Radiation source: fine-focus sealed tube | 1194 reflections with I > 2σ(I) |
Graphite monochromator | Rint = 0.028 |
Detector resolution: 7.40 pixels mm-1 | θmax = 28.4°, θmin = 2.9° |
ω scans | h = −9→9 |
Absorption correction: multi-scan (SADABS; Bruker, 2005) | k = −9→9 |
Tmin = 0.849, Tmax = 0.897 | l = −13→12 |
5969 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)] = 0.034 | Hydrogen site location: inferred from neighbouring sites |
wR(F2) = 0.096 | H atoms treated by a mixture of independent and constrained refinement |
S = 1.07 | w = 1/[σ2(Fo2) + (0.0474P)2 + 0.1418P] where P = (Fo2 + 2Fc2)/3 |
1390 reflections | (Δ/σ)max < 0.001 |
76 parameters | Δρmax = 0.43 e Å−3 |
0 restraints | Δρmin = −0.23 e Å−3 |
C9H13NOS2 | V = 517.29 (4) Å3 |
Mr = 215.32 | Z = 2 |
Monoclinic, P21/m | Mo Kα radiation |
a = 7.3897 (3) Å | µ = 0.48 mm−1 |
b = 7.0999 (4) Å | T = 296 K |
c = 10.3399 (5) Å | 0.36 × 0.25 × 0.23 mm |
β = 107.535 (2)° |
Bruker Kappa APEXII CCD diffractometer | 1390 independent reflections |
Absorption correction: multi-scan (SADABS; Bruker, 2005) | 1194 reflections with I > 2σ(I) |
Tmin = 0.849, Tmax = 0.897 | Rint = 0.028 |
5969 measured reflections |
R[F2 > 2σ(F2)] = 0.034 | 0 restraints |
wR(F2) = 0.096 | H atoms treated by a mixture of independent and constrained refinement |
S = 1.07 | Δρmax = 0.43 e Å−3 |
1390 reflections | Δρmin = −0.23 e Å−3 |
76 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 | ||
S1 | 0.01379 (9) | 0.25000 | 0.58014 (6) | 0.0511 (2) | |
S2 | 0.41214 (8) | 0.25000 | 0.58341 (6) | 0.0543 (2) | |
O1 | −0.1794 (2) | 0.25000 | 0.19333 (18) | 0.0591 (6) | |
N1 | 0.1088 (2) | 0.25000 | 0.35969 (16) | 0.0351 (4) | |
C1 | 0.1866 (3) | 0.25000 | 0.4967 (2) | 0.0363 (5) | |
C2 | −0.1778 (3) | 0.25000 | 0.4253 (3) | 0.0477 (7) | |
C3 | −0.0908 (3) | 0.25000 | 0.3109 (2) | 0.0412 (6) | |
C4 | 0.2266 (2) | 0.25000 | 0.26546 (19) | 0.0356 (5) | |
C5 | 0.1971 (2) | 0.0715 (2) | 0.18098 (16) | 0.0450 (4) | |
C6 | 0.3246 (2) | 0.0739 (3) | 0.08896 (17) | 0.0527 (5) | |
C7 | 0.2925 (4) | 0.25000 | 0.0025 (3) | 0.0590 (8) | |
H2 | −0.255 (2) | 0.142 (3) | 0.4183 (17) | 0.0573* | |
H4 | 0.35945 | 0.25000 | 0.32201 | 0.0427* | |
H51 | 0.06529 | 0.06226 | 0.12627 | 0.0540* | |
H52 | 0.22695 | −0.03748 | 0.24022 | 0.0540* | |
H61 | 0.45638 | 0.06820 | 0.14408 | 0.0633* | |
H62 | 0.29826 | −0.03620 | 0.03070 | 0.0633* | |
H71 | 0.16366 | 0.25000 | −0.05835 | 0.0707* | |
H72 | 0.37843 | 0.25000 | −0.05230 | 0.0707* |
U11 | U22 | U33 | U12 | U13 | U23 | |
S1 | 0.0636 (4) | 0.0480 (3) | 0.0539 (3) | 0.0000 | 0.0361 (3) | 0.0000 |
S2 | 0.0461 (3) | 0.0671 (4) | 0.0438 (3) | 0.0000 | 0.0046 (2) | 0.0000 |
O1 | 0.0307 (7) | 0.0850 (13) | 0.0582 (10) | 0.0000 | 0.0084 (7) | 0.0000 |
N1 | 0.0300 (7) | 0.0394 (8) | 0.0382 (8) | 0.0000 | 0.0138 (6) | 0.0000 |
C1 | 0.0431 (9) | 0.0288 (8) | 0.0401 (10) | 0.0000 | 0.0173 (8) | 0.0000 |
C2 | 0.0417 (10) | 0.0390 (11) | 0.0722 (15) | 0.0000 | 0.0318 (10) | 0.0000 |
C3 | 0.0303 (8) | 0.0395 (10) | 0.0554 (12) | 0.0000 | 0.0153 (8) | 0.0000 |
C4 | 0.0273 (7) | 0.0445 (10) | 0.0365 (9) | 0.0000 | 0.0121 (7) | 0.0000 |
C5 | 0.0444 (7) | 0.0422 (8) | 0.0528 (8) | 0.0012 (6) | 0.0213 (6) | −0.0023 (6) |
C6 | 0.0485 (8) | 0.0602 (10) | 0.0554 (9) | 0.0028 (7) | 0.0246 (7) | −0.0120 (8) |
C7 | 0.0561 (13) | 0.0816 (18) | 0.0456 (12) | 0.0000 | 0.0250 (10) | 0.0000 |
S1—C1 | 1.743 (2) | C6—C7 | 1.514 (3) |
S1—C2 | 1.789 (3) | C2—H2 | 0.95 (2) |
S2—C1 | 1.637 (2) | C2—H2i | 0.95 (2) |
O1—C3 | 1.195 (3) | C4—H4 | 0.9800 |
N1—C1 | 1.359 (3) | C5—H51 | 0.9700 |
N1—C3 | 1.408 (3) | C5—H52 | 0.9700 |
N1—C4 | 1.489 (2) | C6—H61 | 0.9700 |
C2—C3 | 1.507 (3) | C6—H62 | 0.9700 |
C4—C5 | 1.5172 (18) | C7—H71 | 0.9700 |
C4—C5i | 1.5172 (18) | C7—H72 | 0.9700 |
C5—C6 | 1.528 (2) | ||
C1—S1—C2 | 93.28 (11) | C3—C2—H2i | 109.3 (10) |
C1—N1—C3 | 116.24 (17) | H2—C2—H2i | 108.4 (16) |
C1—N1—C4 | 122.34 (16) | N1—C4—H4 | 107.00 |
C3—N1—C4 | 121.43 (15) | C5—C4—H4 | 107.00 |
S1—C1—S2 | 120.37 (12) | C5i—C4—H4 | 107.00 |
S1—C1—N1 | 111.90 (16) | C4—C5—H51 | 110.00 |
S2—C1—N1 | 127.73 (17) | C4—C5—H52 | 110.00 |
S1—C2—C3 | 107.02 (16) | C6—C5—H51 | 110.00 |
O1—C3—N1 | 124.0 (2) | C6—C5—H52 | 110.00 |
O1—C3—C2 | 124.5 (2) | H51—C5—H52 | 108.00 |
N1—C3—C2 | 111.56 (18) | C5—C6—H61 | 109.00 |
N1—C4—C5 | 111.45 (9) | C5—C6—H62 | 109.00 |
N1—C4—C5i | 111.45 (9) | C7—C6—H61 | 109.00 |
C5—C4—C5i | 113.30 (14) | C7—C6—H62 | 109.00 |
C4—C5—C6 | 109.92 (13) | H61—C6—H62 | 108.00 |
C5—C6—C7 | 111.15 (17) | C6—C7—H71 | 109.00 |
C6—C7—C6i | 111.4 (2) | C6—C7—H72 | 109.00 |
S1—C2—H2 | 111.4 (11) | H71—C7—H72 | 108.00 |
S1—C2—H2i | 111.4 (11) | C6i—C7—H71 | 109.00 |
C3—C2—H2 | 109.3 (10) | C6i—C7—H72 | 109.00 |
C2—S1—C1—S2 | 180.00 (1) | C4—N1—C3—C2 | 180.00 (1) |
C2—S1—C1—N1 | 0.00 (1) | C1—N1—C4—C5 | 116.17 (11) |
C1—S1—C2—C3 | 0.00 (1) | C3—N1—C4—C5 | −63.83 (11) |
C3—N1—C1—S1 | 0.00 (1) | S1—C2—C3—O1 | 180.00 (1) |
C3—N1—C1—S2 | 180.00 (1) | S1—C2—C3—N1 | 0.00 (1) |
C4—N1—C1—S1 | 180.00 (1) | N1—C4—C5—C6 | −178.24 (13) |
C4—N1—C1—S2 | 0.00 (1) | C5i—C4—C5—C6 | 55.10 (17) |
C1—N1—C3—O1 | 180.00 (1) | C4—C5—C6—C7 | −54.99 (19) |
C1—N1—C3—C2 | 0.00 (1) | C5—C6—C7—C6i | 56.9 (2) |
C4—N1—C3—O1 | 0.00 (1) |
Symmetry code: (i) x, −y+1/2, z. |
D—H···A | D—H | H···A | D···A | D—H···A |
C4—H4···S2 | 0.98 | 2.61 | 3.158 (2) | 115 |
C5—H51···O1 | 0.97 | 2.51 | 3.095 (2) | 119 |
Experimental details
Crystal data | |
Chemical formula | C9H13NOS2 |
Mr | 215.32 |
Crystal system, space group | Monoclinic, P21/m |
Temperature (K) | 296 |
a, b, c (Å) | 7.3897 (3), 7.0999 (4), 10.3399 (5) |
β (°) | 107.535 (2) |
V (Å3) | 517.29 (4) |
Z | 2 |
Radiation type | Mo Kα |
µ (mm−1) | 0.48 |
Crystal size (mm) | 0.36 × 0.25 × 0.23 |
Data collection | |
Diffractometer | Bruker Kappa APEXII CCD diffractometer |
Absorption correction | Multi-scan (SADABS; Bruker, 2005) |
Tmin, Tmax | 0.849, 0.897 |
No. of measured, independent and observed [I > 2σ(I)] reflections | 5969, 1390, 1194 |
Rint | 0.028 |
(sin θ/λ)max (Å−1) | 0.668 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.034, 0.096, 1.07 |
No. of reflections | 1390 |
No. of parameters | 76 |
H-atom treatment | H atoms treated by a mixture of independent and constrained refinement |
Δρmax, Δρmin (e Å−3) | 0.43, −0.23 |
Computer programs: APEX2 (Bruker, 2007), SAINT (Bruker, 2007), SHELXS97 (Sheldrick, 2008), SHELXL97 (Sheldrick, 2008), ORTEP-3 (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 |
C4—H4···S2 | 0.98 | 2.61 | 3.158 (2) | 115 |
C5—H51···O1 | 0.97 | 2.51 | 3.095 (2) | 119 |
Acknowledgements
DS is grateful to Government College University, Lahore, for providing funds under the GCU funded Research Projects Programme.
References
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Our group is involved in synthesizing various rhodanine derivatives for beta-lactamase and xanthine oxidase enzyme inhibition studies. In this context, we have already reported the preparation and crystal structures of (II) (5Z)-5-(2-Hydroxybenzylidene)-3-phenyl-2-thioxo-1,3- thiazolidin-4-one (Shahwar et al., 2009a), (III) (5E)-5-(4-Hydroxy-3-methoxybenzylidene)-2-thioxo-1, 3-thiazolidin-4-one methanol monosolvate (Shahwar et al., 2009b), (IV) (5Z)-5-(2-Hydroxybenzylidene)-2-thioxo-1,3-thiazolidin-4-one methanol hemisolvate (Shahwar et al., 2009c) and (V) 3-(2-Methylphenyl)-2-thioxo-1,3-thiazolidin-4-one (Shahwar et al., 2009d). The title compound (I, Fig. 1) is in continuation of synthesizing rhodanine derivatives for biological studies.
In (I), the rhodanine group A (N1/C1/S1/C1/C3/O1/S2) and the basal plane B (C5/C6/C5i/C6i; symmetry code: i = x, - y + 1/2, z) of cyclohexyl are planar and are perpendicularly oriented. The monomeric molecules are stabilized through intramolecular H-bondings (Table 1, Fig. 1) forming a S(5) and two S(6) ring motifs (Bernstein et al., 1995). The apical C-atoms C4 and C7 of cyclohexyl are at a distance of 0.6430 (28) and -0.6667 (36) Å respectively, from the basal plane. There exist π–π interactions at a distance of 3.8140 (5) Å between the centroids of the heterocyclic rings.