organic compounds
1-Benzoyl-4-thiobiuret
aDepartment of Chemistry, Chungnam National University, Daejeon 305-764, Republic of Korea
*Correspondence e-mail: skkang@cnu.ac.kr
In the title compound (systematic name: {[(phenylformamido)carbonyl]amino}methanethioamide), C9H9N3O2S, both benzoyl and terminal thiourea fragments adopt transoid conformations with respect to the central carbonyl O atom. The benzoyl and thiobiuret groups are almost coplanar, making a dihedral angle of 4.40 (8)°. The molecular structure is stabilized by two intramolecular N—H⋯O hydrogen bonds. In the crystal, N—H⋯O and N—H⋯S hydrogen bonds link the molecules into a tape running along [101].
Related literature
For the structure and reactivity of thiadiazole derivatives, see: Cho, Ra et al. (1996); Cho, Cho et al. (1996). For the structure of a thiobiuret isomer, see: Kang et al. (2012).
Experimental
Crystal data
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Data collection: SMART (Bruker, 2002); cell SAINT (Bruker, 2002); data reduction: SAINT; program(s) used to solve structure: SHELXS2013 (Sheldrick, 2013); program(s) used to refine structure: SHELXL2013 (Sheldrick, 2013); molecular graphics: ORTEP-3 for Windows (Farrugia, 2012); software used to prepare material for publication: WinGX (Farrugia, 2012).
Supporting information
10.1107/S1600536813019983/is5292sup1.cif
contains datablocks global, I. DOI:Structure factors: contains datablock I. DOI: 10.1107/S1600536813019983/is5292Isup2.hkl
Supporting information file. DOI: 10.1107/S1600536813019983/is5292Isup3.cml
Benzoyl chloride (48 ml, 58.1 g, 0.41 mol) was added to warm solution of potassium thiocyanate (48.0 g, 0.49 mol) in acetone (400 ml). The solution became milky white and yellow when the addition had been completed. The mixture was stirred for 3.5 h at 50°C and left to cool to room temperature. The filtrate was heated to 55°C for 5 h with urea (24.0 g, 0.40 mol). And the resulting solution was cooled to room temperature and then placed in an ice bath for several hours. The cold mixture was filtered to give 1-benzoyl-4-thiobiuret as a bright yellow solid. Recrystallization from methyl alcohol afforded the yellow crystals suitable for X-ray diffraction.
H atoms of the NH and NH2 groups were located in a difference Fourier map and refined freely [refined N—H distances = 0.84 (2)–0.91 (2) Å]. Other H atoms were positioned geometrically and refined using a riding model, with C—H = 0.93 Å, and with Uiso(H) = 1.2Ueq(C).
Data collection: SMART (Bruker, 2002); cell
SAINT (Bruker, 2002); data reduction: SAINT (Bruker, 2002); program(s) used to solve structure: SHELXS2013 (Sheldrick, 2013); program(s) used to refine structure: SHELXL2013 (Sheldrick, 2013); molecular graphics: ORTEP-3 for Windows (Farrugia, 2012); software used to prepare material for publication: WinGX (Farrugia, 2012).Fig. 1. Molecular structure of the title compound, showing the atom-numbering scheme and 30% probability ellipsoids. Two intramolecular N—H···O hydrogen bonds are indicated by dashed lines. | |
Fig. 2. Part of the packing diagram of the title compound, showing a molecular tape formed by intermolecular N—H···O and N—H···S hydrogen bonds (dashed lines). |
C9H9N3O2S | Z = 2 |
Mr = 223.25 | F(000) = 232 |
Triclinic, P1 | Dx = 1.47 Mg m−3 |
Hall symbol: -P 1 | Mo Kα radiation, λ = 0.71073 Å |
a = 5.6616 (1) Å | Cell parameters from 3132 reflections |
b = 7.8407 (2) Å | θ = 2.7–22.3° |
c = 11.7631 (3) Å | µ = 0.30 mm−1 |
α = 97.169 (2)° | T = 296 K |
β = 94.992 (3)° | Block, yellow |
γ = 101.390 (2)° | 0.2 × 0.15 × 0.07 mm |
V = 504.53 (2) Å3 |
Bruker SMART CCD diffractometer | 1485 reflections with I > 2σ(I) |
Radiation source: fine-focus sealed tube | Rint = 0.055 |
ϕ and ω scans | θmax = 28.3°, θmin = 1.8° |
Absorption correction: multi-scan (SADABS; Bruker, 2002) | h = −7→7 |
Tmin = 0.94, Tmax = 0.97 | k = −10→10 |
17356 measured reflections | l = −15→15 |
2516 independent reflections |
Refinement on F2 | 0 restraints |
Least-squares matrix: full | Hydrogen site location: inferred from neighbouring sites |
R[F2 > 2σ(F2)] = 0.037 | H atoms treated by a mixture of independent and constrained refinement |
wR(F2) = 0.097 | w = 1/[σ2(Fo2) + (0.052P)2] where P = (Fo2 + 2Fc2)/3 |
S = 0.87 | (Δ/σ)max < 0.001 |
2516 reflections | Δρmax = 0.16 e Å−3 |
152 parameters | Δρmin = −0.20 e Å−3 |
C9H9N3O2S | γ = 101.390 (2)° |
Mr = 223.25 | V = 504.53 (2) Å3 |
Triclinic, P1 | Z = 2 |
a = 5.6616 (1) Å | Mo Kα radiation |
b = 7.8407 (2) Å | µ = 0.30 mm−1 |
c = 11.7631 (3) Å | T = 296 K |
α = 97.169 (2)° | 0.2 × 0.15 × 0.07 mm |
β = 94.992 (3)° |
Bruker SMART CCD diffractometer | 2516 independent reflections |
Absorption correction: multi-scan (SADABS; Bruker, 2002) | 1485 reflections with I > 2σ(I) |
Tmin = 0.94, Tmax = 0.97 | Rint = 0.055 |
17356 measured reflections |
R[F2 > 2σ(F2)] = 0.037 | 0 restraints |
wR(F2) = 0.097 | H atoms treated by a mixture of independent and constrained refinement |
S = 0.87 | Δρmax = 0.16 e Å−3 |
2516 reflections | Δρmin = −0.20 e Å−3 |
152 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. |
x | y | z | Uiso*/Ueq | ||
C1 | 0.0374 (3) | 0.8224 (2) | −0.12506 (14) | 0.0447 (4) | |
C2 | 0.2488 (3) | 0.9206 (2) | −0.15393 (16) | 0.0597 (5) | |
H2 | 0.3881 | 0.9477 | −0.1014 | 0.072* | |
C3 | 0.2552 (4) | 0.9785 (3) | −0.25952 (19) | 0.0729 (6) | |
H3 | 0.398 | 1.0453 | −0.2778 | 0.087* | |
C4 | 0.0539 (4) | 0.9383 (3) | −0.33677 (18) | 0.0723 (6) | |
H4 | 0.06 | 0.9763 | −0.4085 | 0.087* | |
C5 | −0.1598 (4) | 0.8419 (3) | −0.31035 (18) | 0.0753 (6) | |
H5 | −0.2979 | 0.8154 | −0.3636 | 0.09* | |
C6 | −0.1672 (3) | 0.7846 (3) | −0.20373 (16) | 0.0615 (5) | |
H6 | −0.3114 | 0.7203 | −0.1851 | 0.074* | |
C7 | 0.0480 (3) | 0.7661 (2) | −0.00927 (14) | 0.0442 (4) | |
O8 | 0.2338 (2) | 0.80629 (17) | 0.05733 (11) | 0.0633 (4) | |
N9 | −0.1594 (2) | 0.66558 (19) | 0.02071 (12) | 0.0467 (4) | |
H9 | −0.284 (3) | 0.634 (2) | −0.0281 (16) | 0.054 (5)* | |
C10 | −0.1998 (3) | 0.6059 (2) | 0.12532 (14) | 0.0446 (4) | |
O11 | −0.3996 (2) | 0.52249 (17) | 0.13780 (10) | 0.0603 (4) | |
N12 | −0.0057 (2) | 0.64570 (19) | 0.20766 (11) | 0.0467 (4) | |
H12 | 0.131 (4) | 0.707 (2) | 0.1906 (17) | 0.067 (6)* | |
C13 | 0.0039 (3) | 0.6057 (2) | 0.31929 (13) | 0.0447 (4) | |
S14 | 0.27039 (8) | 0.66392 (7) | 0.40142 (4) | 0.05930 (19) | |
N15 | −0.1971 (3) | 0.5267 (3) | 0.35341 (15) | 0.0646 (5) | |
H15A | −0.336 (4) | 0.507 (2) | 0.3052 (18) | 0.075 (6)* | |
H15B | −0.199 (3) | 0.486 (2) | 0.4173 (18) | 0.066 (6)* |
U11 | U22 | U33 | U12 | U13 | U23 | |
C1 | 0.0468 (9) | 0.0459 (10) | 0.0402 (9) | 0.0048 (8) | 0.0046 (7) | 0.0100 (8) |
C2 | 0.0539 (10) | 0.0726 (13) | 0.0505 (11) | 0.0013 (9) | 0.0049 (8) | 0.0214 (10) |
C3 | 0.0714 (13) | 0.0858 (16) | 0.0630 (14) | 0.0016 (12) | 0.0175 (11) | 0.0337 (12) |
C4 | 0.0944 (16) | 0.0782 (15) | 0.0503 (12) | 0.0174 (13) | 0.0138 (12) | 0.0294 (11) |
C5 | 0.0810 (15) | 0.0890 (16) | 0.0523 (12) | 0.0069 (13) | −0.0107 (11) | 0.0263 (11) |
C6 | 0.0564 (11) | 0.0714 (13) | 0.0518 (12) | −0.0029 (9) | −0.0038 (9) | 0.0230 (10) |
C7 | 0.0403 (9) | 0.0483 (10) | 0.0410 (9) | 0.0009 (7) | 0.0013 (7) | 0.0102 (8) |
O8 | 0.0426 (6) | 0.0882 (10) | 0.0501 (7) | −0.0140 (6) | −0.0047 (6) | 0.0269 (7) |
N9 | 0.0392 (7) | 0.0609 (10) | 0.0353 (8) | −0.0021 (7) | −0.0023 (6) | 0.0141 (7) |
C10 | 0.0411 (9) | 0.0546 (11) | 0.0349 (9) | 0.0016 (8) | 0.0012 (7) | 0.0099 (8) |
O11 | 0.0397 (6) | 0.0898 (10) | 0.0432 (7) | −0.0107 (6) | −0.0017 (5) | 0.0213 (6) |
N12 | 0.0370 (7) | 0.0637 (10) | 0.0359 (8) | −0.0022 (7) | 0.0008 (6) | 0.0165 (7) |
C13 | 0.0401 (8) | 0.0588 (11) | 0.0355 (9) | 0.0069 (8) | 0.0047 (7) | 0.0129 (8) |
S14 | 0.0402 (2) | 0.0911 (4) | 0.0424 (3) | 0.0002 (2) | −0.00342 (18) | 0.0213 (2) |
N15 | 0.0403 (8) | 0.1120 (15) | 0.0414 (9) | 0.0026 (9) | 0.0021 (7) | 0.0336 (10) |
C1—C6 | 1.377 (2) | C7—O8 | 1.2181 (18) |
C1—C2 | 1.383 (2) | C7—N9 | 1.378 (2) |
C1—C7 | 1.483 (2) | N9—C10 | 1.391 (2) |
C2—C3 | 1.376 (3) | N9—H9 | 0.843 (18) |
C2—H2 | 0.93 | C10—O11 | 1.2205 (18) |
C3—C4 | 1.353 (3) | C10—N12 | 1.3591 (19) |
C3—H3 | 0.93 | N12—C13 | 1.387 (2) |
C4—C5 | 1.377 (3) | N12—H12 | 0.882 (19) |
C4—H4 | 0.93 | C13—N15 | 1.305 (2) |
C5—C6 | 1.385 (3) | C13—S14 | 1.6679 (16) |
C5—H5 | 0.93 | N15—H15A | 0.91 (2) |
C6—H6 | 0.93 | N15—H15B | 0.85 (2) |
C6—C1—C2 | 118.74 (16) | O8—C7—N9 | 120.79 (15) |
C6—C1—C7 | 124.45 (15) | O8—C7—C1 | 121.33 (14) |
C2—C1—C7 | 116.81 (15) | N9—C7—C1 | 117.87 (14) |
C3—C2—C1 | 120.69 (18) | C7—N9—C10 | 128.80 (14) |
C3—C2—H2 | 119.7 | C7—N9—H9 | 119.4 (12) |
C1—C2—H2 | 119.7 | C10—N9—H9 | 111.8 (12) |
C4—C3—C2 | 120.02 (18) | O11—C10—N12 | 124.46 (15) |
C4—C3—H3 | 120 | O11—C10—N9 | 119.83 (14) |
C2—C3—H3 | 120 | N12—C10—N9 | 115.71 (14) |
C3—C4—C5 | 120.70 (19) | C10—N12—C13 | 127.81 (14) |
C3—C4—H4 | 119.7 | C10—N12—H12 | 117.8 (13) |
C5—C4—H4 | 119.7 | C13—N12—H12 | 114.4 (13) |
C4—C5—C6 | 119.38 (19) | N15—C13—N12 | 117.68 (14) |
C4—C5—H5 | 120.3 | N15—C13—S14 | 124.41 (13) |
C6—C5—H5 | 120.3 | N12—C13—S14 | 117.91 (12) |
C1—C6—C5 | 120.46 (18) | C13—N15—H15A | 118.8 (13) |
C1—C6—H6 | 119.8 | C13—N15—H15B | 121.9 (13) |
C5—C6—H6 | 119.8 | H15A—N15—H15B | 119.1 (18) |
D—H···A | D—H | H···A | D···A | D—H···A |
N9—H9···O11i | 0.843 (18) | 2.172 (18) | 2.9891 (18) | 163.3 (16) |
N12—H12···O8 | 0.882 (19) | 1.919 (19) | 2.6171 (17) | 135.0 (17) |
N15—H15A···O11 | 0.91 (2) | 1.99 (2) | 2.684 (2) | 132.0 (17) |
N15—H15B···S14ii | 0.85 (2) | 2.58 (2) | 3.4295 (17) | 171.3 (17) |
Symmetry codes: (i) −x−1, −y+1, −z; (ii) −x, −y+1, −z+1. |
D—H···A | D—H | H···A | D···A | D—H···A |
N9—H9···O11i | 0.843 (18) | 2.172 (18) | 2.9891 (18) | 163.3 (16) |
N12—H12···O8 | 0.882 (19) | 1.919 (19) | 2.6171 (17) | 135.0 (17) |
N15—H15A···O11 | 0.91 (2) | 1.99 (2) | 2.684 (2) | 132.0 (17) |
N15—H15B···S14ii | 0.85 (2) | 2.58 (2) | 3.4295 (17) | 171.3 (17) |
Symmetry codes: (i) −x−1, −y+1, −z; (ii) −x, −y+1, −z+1. |
References
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5-Amino-2H-1,2,4-thiadiazol-3-one is the analog of cytosine. As an analog of cytosine, the tautomeric structure and reactivity of this compound have been examined (Cho, Ra et al., 1996). Within the framework of our interest in the synthesis of novel potential anti-metabolites of nucleic acid components which would possess cytostatic activity, we have synthesized derivatives of 5-amino-3H-1,3,4-thiadiazol-2-one (Cho, Cho et al., 1996). The title compound, 1-benzoyl-4-thiobiuret, is an isomer of 1-benzoyl-2-thiobiuret (Kang et al., 2012). This compound is an intermediate for the formation of the thiobiuret which is a good starting material to make 5-amino-2H-1,2,4-thiadizolin-3-one via oxidative ring-closure reaction.
The dihedral angle between the benzoyl unit (C1–C7/O8) and thiobiuret group (N9/C10/O11/N12/C13/S14/N15) is 4.40 (8)°. Both carbonyl O8 and S14 atoms are positioned anti conformations with respect to the O11 atom (Fig. 1). The intramolecular O8···H12—N12 and O11···H15—N15 hydrogen bonds stabilize the molecule (Fig. 1 and Table 1). The intermolecular N—H···O and N—H···S hydrogen bonds link the molecules into a tape along the [101] direction (Fig. 2 and Table 1).