organic compounds
trans-4,5-Dihydroxy-1,3-bis(4-methoxyphenyl)imidazolidine-2-thione
aCollege of Chemistry and Environmental Science, Henan Normal University, Xinxiang 453007, People's Republic of China, and bCollege of Chemistry, Luoyang Normal University, Xinxiang 453007, People's Republic of China
*Correspondence e-mail: zzf5188@sohu.com
In the title compound, C17H18N2O4S, where one of the N-4-methoxyphenyl fragments is disordered over two sets of sites, the five-membered ring exhibits a nearly half-chair conformation and the two hydroxyl groups lie on opposite sides of the five-membered ring. In the crystal, the molecules are linked into sheets parallel to (100) via O—H⋯O and O—H⋯S hydrogen bonds.
Related literature
For the bioactivity of imidazolidine-2-one derivatives, see: Lam et al. (1994); Lenzen & Ahmad (2001); Perronnet & Teche (1973). For related structures, see: Zhang et al. (2007, 2009). For hydrogen-bond motifs, see: Bernstein et al. (1995). For puckering parameters, see: Cremer & Pople (1975).
Experimental
Crystal data
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Refinement
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Data collection: SMART (Bruker, 1997); cell SAINT (Bruker, 1997); data reduction: SAINT; program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: SHELXTL (Sheldrick, 2008); software used to prepare material for publication: SHELXTL.
Supporting information
https://doi.org/10.1107/S1600536809042779/fl2268sup1.cif
contains datablock I. DOI:Structure factors: contains datablock I. DOI: https://doi.org/10.1107/S1600536809042779/fl2268Isup2.hkl
Into a three-necked round-bottomed flask equipped with a stirrer were introduced 1,3-bis(4-methoxyphenyl)thiourea(0.1 mol), glyoxal (40%, 18 g) and ethanol (95%, 30 ml). The mixture was then refluxed with stirring for ca 30 min and thereafter the solvent was removed; the residue was washed with cold ethanol and the resulting solid product was recrystallized from hot ethanol to give crystals of (I).
1H NMR(DMSO, 400 MHz) of (I): δ 7.36–6.95 (m, 8H), δ 7.1 (d, J = 8.0 Hz, 2H), δ 5.08 (d, J = 8.4 Hz, 2H), δ 3.76 (s, 6H).
The hydroxyl H atoms in (I) were found in a difference Fourier map and then freely refined. All other H atoms were positioned geometrically (aromatic C—H = 0.93 Å, methyl C—H = 0.96 Å, methyne C—H = 0.98 Å and O—H = 0.82 Å) and refined using a riding model [Uiso(H) = 1.2Ueq (aromatic and methyne C) and 1.5 Ueq(methyl C and hydroxy O)]. The N2-containing (4-methoxyphenyl)imino group was found to be disordered, and therefore was modelled over two sets of positions, with a refined major occupancy of 0.747 (2). 10 Geometric displacement-parameter restraints were applied to the disordered part. They are: DFIX 1.37 0.02 C10' C11'; DFIX 1.38 0.02 C11' C12'; DFIX 1.37 0.02 C10' C15' ; DFIX 1.37 0.02 C1 N2; DFIX 1.37 0.02 C1 N2'; DFIX 1.46 0.02 C3 N2; DFIX 1.46 0.02 C3 N2' ; DFIX 1.42 0.02 N2' C10'; DFIX 1.42 0.02 O4' C17'; DFIX 1.42 0.02 O4 C17
Imidazolidine-2-one derivates often exhibit powerful bioactivitiy, as herbicides (Perronnet & Teche,1973), antidiabetics (Lenzen & Ahmad, 2001) and anti-HIV agents (Lam et al., 1994). Enders and his workers have earlier reported the synthesis and use of 4,5-dihydroxyimidazolidine-2-thiones. However, to our knowledge, there are few N,N'-diarylsubstituted 4,5-dihydroxyimidazolidine-2-thiones reported so far. As a continuation of our structural studies of such compounds (Zhang et al., 2009), we report here the molecular and supramolecular structures of (I) (Fig. 1).
In (I), the N2-containing (4-methoxyphenyl)imino group is disordered over two sites with refined occupancies of 0.747 (2) and 0.253 (2) (Fig. 1). The five-membered ring adopts a nearly half-chair conformation; the total puckering amplitudes Q2 (Cremer & Pople, 1975) are 0.247 (5) and 0.187 (11) Å, and the ring puckering parameters φ2 are 302.1 (9) and 333 (5)°, respectively, for the atom sequences, N1—C1—N2—C3—C2 and N1—C1—N2'—C3—C2. For an idealized half-chair, the ring puckering angle is φ2 = (36k + 18) ° (where k = zero or an integer). Therefore, the conformation for the five-membered ring in (I) is markedly different from that found in our previously reported compound (Zhang et al., 2007), where the five-membered ring shows a perfect The difference in conformation is mainly attributed to van der Waals repulsions between the five-membered ring and its N1 and N2 phenyl substituents. Due to the existence of the van der Waals repulsions, the exhibit nearly perpendicular orientations to the five-membered ring with the dihedral angle between the planes C4–C9 and C1/N1/C2 being 73.1 (2) °. Meanwhile, the dihedral angle between the planes C10–C15 and C1/N2/C3 is 89.7 (9) °. In addition, the C7 and C13 methoxy groups adopt closely coplanar orientations, respectively to their attached aryl rings, as shown by the torsion angles of C6—C7—O3—C16 [5.4 (4) °] and C14—C13—O4—C17 [6.4 (13) °]. Interestingly, the molecule (I) adopts a trans configuration (Fig. 1); the two hydroxyl groups lie on opposite sides of the five-membered ring. In view of the same trans configuration in 4,5-dihydroxyimidazolidine-2-thiones (Zhang et al., 2007; Zhang et al., 2009), we can draw a general conclusion that this trans-configuration is probably ubiquitous in 4,5-dihydroxyimidazolidine- 2-thiones.
The heterocyclic geometries of (I) also present some unexpected features. The C1—N1[1.366 (2) Å] and C1—N2 [1.352 (6) Å] bonds are significantly longer than the corresponding bonds in 4,5-dihydroxyimidazolidine-2-thione [1.335 (2) and 1.336 (2) Å; Zhang et al., 2007]. Conversely, the C1-S1[1.669 (2) Å] and C2—C3 [1.523 (2) Å] bonds are shorter than the corresponding bonds in 4,5-dihydroxyimidazolidine-2-thione [1.684 (2) and 1.537 (2) Å, respectively].
In analyzing the supramolecular structure of (I), for the sake of simplicity, we shall omit any consideration of the intermolecular C—H···O interactions involving a C—H bond from an aromatic ring, which is far too long to be significant. Thus, molecules of (I) are linked into sheets by only two independent O—H···S and O—H···O hydrogen bonds (Table 1), the formation of which is readily analyzed in terms of two one-dimensional substructures. In the first π hydrogen bonds and π-π stacking interactions are absent.
hydroxyl atom O1 in the molecule at (x,y,z) acts as a hydrogen-bond donor to thiocarbonyl atom S1 in the molecule at (-x, y - 1/2,-z + 3/2), so forming a C22(6) (Bernstein et al.,1995) chain along [010] and generated by 21 screw axis along (0,y,3/4) (Fig. 2). Similarly in the second hydroxyl atom O2 in the molecule at (x,y,z) acts as a hydrogen-bond donor to hydroxyl atom O1 in the molecule at (x,-y + 3/2,z + 1/2), so forming a C(5) (Bernstein et al., 1995) chain parallel to [001], this time generated by a 21 screw along (1/8,3/4,z) (Fig. 2). The combination of the two chain motifs is sufficient to link all the molecules into a sheet parallel to (100). Two such sheets pass through each in each sheet, there are both enantiomers of (I); there are no direction-specific interactions between adjacent sheets, in particular C—H···For the bioactivity of imidazolidine-2-one derivatives, see: Lam et al. (1994); Lenzen & Ahmad (2001); Perronnet & Teche (1973). For related structures, see: Zhang et al. (2007, 2009). For hydrogen-bond motifs, see: Bernstein et al. (1995). For puckering parameters, see: Cremer & Pople (1975).
Data collection: SMART (Bruker, 1997); cell
SAINT (Bruker, 1997); data reduction: SAINT (Bruker, 1997); program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: SHELXTL (Sheldrick, 2008); software used to prepare material for publication: SHELXTL (Sheldrick, 2008).C17H18N2O4S | F(000) = 728 |
Mr = 346.39 | Dx = 1.341 Mg m−3 |
Monoclinic, P21/c | Mo Kα radiation, λ = 0.71073 Å |
a = 13.9807 (12) Å | Cell parameters from 4930 reflections |
b = 12.1789 (11) Å | θ = 2.6–26.9° |
c = 10.0958 (9) Å | µ = 0.21 mm−1 |
β = 93.815 (1)° | T = 294 K |
V = 1715.2 (3) Å3 | Block, colorless |
Z = 4 | 0.49 × 0.35 × 0.34 mm |
Bruker SMART CCD diffractometer | 3179 independent reflections |
Radiation source: fine-focus sealed tube | 2654 reflections with I > 2σ(I) |
Graphite monochromator | Rint = 0.019 |
phi and ω scans | θmax = 25.5°, θmin = 2.6° |
Absorption correction: multi-scan (SADABS; Sheldrick, 2003) | h = −16→16 |
Tmin = 0.904, Tmax = 0.931 | k = −14→14 |
12720 measured reflections | l = −12→11 |
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)] = 0.041 | Hydrogen site location: inferred from neighbouring sites |
wR(F2) = 0.112 | H-atom parameters constrained |
S = 1.03 | w = 1/[σ2(Fo2) + (0.0522P)2 + 0.751P] where P = (Fo2 + 2Fc2)/3 |
3179 reflections | (Δ/σ)max = 0.001 |
244 parameters | Δρmax = 0.41 e Å−3 |
10 restraints | Δρmin = −0.60 e Å−3 |
C17H18N2O4S | V = 1715.2 (3) Å3 |
Mr = 346.39 | Z = 4 |
Monoclinic, P21/c | Mo Kα radiation |
a = 13.9807 (12) Å | µ = 0.21 mm−1 |
b = 12.1789 (11) Å | T = 294 K |
c = 10.0958 (9) Å | 0.49 × 0.35 × 0.34 mm |
β = 93.815 (1)° |
Bruker SMART CCD diffractometer | 3179 independent reflections |
Absorption correction: multi-scan (SADABS; Sheldrick, 2003) | 2654 reflections with I > 2σ(I) |
Tmin = 0.904, Tmax = 0.931 | Rint = 0.019 |
12720 measured reflections |
R[F2 > 2σ(F2)] = 0.041 | 10 restraints |
wR(F2) = 0.112 | H-atom parameters constrained |
S = 1.03 | Δρmax = 0.41 e Å−3 |
3179 reflections | Δρmin = −0.60 e Å−3 |
244 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 | Occ. (<1) | |
N2 | 0.1894 (5) | 0.8182 (5) | 0.8627 (11) | 0.0376 (14) | 0.746 (2) |
C10 | 0.2878 (3) | 0.8426 (4) | 0.8958 (3) | 0.0387 (8) | 0.746 (2) |
C11 | 0.3522 (2) | 0.8265 (2) | 0.7987 (3) | 0.0538 (7) | 0.746 (2) |
H11 | 0.3295 | 0.8116 | 0.7119 | 0.065* | 0.746 (2) |
C12 | 0.4492 (2) | 0.8325 (3) | 0.8299 (3) | 0.0644 (8) | 0.746 (2) |
H12 | 0.4920 | 0.8229 | 0.7640 | 0.077* | 0.746 (2) |
C13 | 0.4833 (2) | 0.8528 (2) | 0.9598 (3) | 0.0532 (7) | 0.746 (2) |
C14 | 0.4205 (2) | 0.8754 (3) | 1.0555 (3) | 0.0542 (8) | 0.746 (2) |
H14 | 0.4432 | 0.8936 | 1.1413 | 0.065* | 0.746 (2) |
C15 | 0.3222 (2) | 0.8705 (2) | 1.0222 (3) | 0.0480 (7) | 0.746 (2) |
H15 | 0.2793 | 0.8863 | 1.0862 | 0.058* | 0.746 (2) |
C17 | 0.6212 (9) | 0.861 (2) | 1.1138 (17) | 0.0922 (15) | 0.746 (2) |
H17A | 0.5976 | 0.9264 | 1.1523 | 0.138* | 0.746 (2) |
H17B | 0.6898 | 0.8640 | 1.1139 | 0.138* | 0.746 (2) |
H17C | 0.6031 | 0.7982 | 1.1648 | 0.138* | 0.746 (2) |
O4 | 0.58130 (14) | 0.8499 (2) | 0.9808 (3) | 0.0785 (7) | 0.746 (2) |
N2' | 0.1897 (16) | 0.8218 (15) | 0.883 (4) | 0.0376 (14) | 0.254 (2) |
C10' | 0.2843 (11) | 0.8530 (16) | 0.9341 (14) | 0.0387 (8) | 0.254 (2) |
C11' | 0.3624 (6) | 0.8085 (8) | 0.8804 (9) | 0.0538 (7) | 0.254 (2) |
H11' | 0.3560 | 0.7707 | 0.8003 | 0.065* | 0.254 (2) |
C12' | 0.4518 (7) | 0.8206 (10) | 0.9478 (12) | 0.0644 (8) | 0.254 (2) |
H12' | 0.5064 | 0.7924 | 0.9123 | 0.077* | 0.254 (2) |
C13' | 0.4586 (7) | 0.8747 (9) | 1.0675 (13) | 0.0532 (7) | 0.254 (2) |
C14' | 0.3778 (6) | 0.9179 (8) | 1.1206 (9) | 0.0542 (8) | 0.254 (2) |
H14' | 0.3837 | 0.9566 | 1.2001 | 0.065* | 0.254 (2) |
C15' | 0.2897 (7) | 0.9037 (8) | 1.0563 (9) | 0.0480 (7) | 0.254 (2) |
H15' | 0.2345 | 0.9277 | 1.0941 | 0.058* | 0.254 (2) |
C17' | 0.629 (3) | 0.854 (7) | 1.100 (6) | 0.0922 (15) | 0.254 (2) |
H17D | 0.6417 | 0.7791 | 1.1256 | 0.138* | 0.254 (2) |
H17E | 0.6805 | 0.8998 | 1.1347 | 0.138* | 0.254 (2) |
H17F | 0.6243 | 0.8588 | 1.0044 | 0.138* | 0.254 (2) |
O4' | 0.5427 (4) | 0.8885 (6) | 1.1491 (8) | 0.0785 (7) | 0.254 (2) |
S1 | 0.12664 (3) | 1.02415 (4) | 0.81566 (5) | 0.04968 (17) | |
O1 | 0.06318 (10) | 0.66792 (11) | 0.68364 (12) | 0.0507 (4) | |
H1 | 0.0227 | 0.6199 | 0.6696 | 0.076* | |
O2 | 0.15350 (10) | 0.68187 (11) | 1.02357 (12) | 0.0498 (3) | |
H2 | 0.1261 | 0.7311 | 1.0616 | 0.075* | |
O3 | −0.33055 (13) | 0.9381 (2) | 0.6034 (2) | 0.1059 (6) | |
N1 | 0.03525 (10) | 0.82649 (12) | 0.81002 (15) | 0.0404 (3) | |
C1 | 0.11643 (11) | 0.88826 (14) | 0.83077 (16) | 0.0368 (4) | |
C2 | 0.05733 (13) | 0.70931 (15) | 0.81329 (17) | 0.0409 (4) | |
H2A | 0.0101 | 0.6685 | 0.8611 | 0.049* | |
C3 | 0.15534 (13) | 0.70725 (14) | 0.88879 (17) | 0.0405 (4) | |
H3 | 0.1963 | 0.6541 | 0.8466 | 0.049* | |
C4 | −0.05667 (12) | 0.86336 (15) | 0.75615 (17) | 0.0402 (4) | |
C5 | −0.06968 (13) | 0.90132 (16) | 0.62842 (18) | 0.0446 (4) | |
H5 | −0.0168 | 0.9098 | 0.5782 | 0.054* | |
C6 | −0.16006 (14) | 0.92724 (17) | 0.5726 (2) | 0.0509 (5) | |
H6 | −0.1680 | 0.9526 | 0.4857 | 0.061* | |
C7 | −0.23823 (14) | 0.9148 (2) | 0.6480 (2) | 0.0602 (6) | |
C8 | −0.22540 (15) | 0.8775 (2) | 0.7771 (2) | 0.0737 (7) | |
H8 | −0.2782 | 0.8698 | 0.8277 | 0.088* | |
C9 | −0.13567 (14) | 0.8517 (2) | 0.8319 (2) | 0.0601 (6) | |
H9 | −0.1277 | 0.8267 | 0.9190 | 0.072* | |
C16 | −0.34805 (19) | 0.9682 (3) | 0.4689 (3) | 0.1059 (6) | |
H16A | −0.3167 | 1.0367 | 0.4531 | 0.159* | |
H16B | −0.4158 | 0.9761 | 0.4489 | 0.159* | |
H16C | −0.3235 | 0.9124 | 0.4132 | 0.159* |
U11 | U22 | U33 | U12 | U13 | U23 | |
N2 | 0.0346 (8) | 0.0367 (9) | 0.041 (4) | −0.0025 (6) | −0.0037 (13) | 0.0023 (13) |
C10 | 0.0363 (11) | 0.0352 (15) | 0.044 (3) | 0.0000 (9) | −0.0051 (17) | −0.0031 (18) |
C11 | 0.0475 (14) | 0.0643 (16) | 0.0496 (16) | −0.0027 (12) | 0.0039 (14) | −0.0145 (15) |
C12 | 0.0405 (14) | 0.076 (2) | 0.0784 (19) | −0.0006 (13) | 0.0130 (14) | −0.0227 (17) |
C13 | 0.0337 (15) | 0.0461 (15) | 0.0786 (19) | −0.0015 (11) | −0.0059 (14) | 0.0030 (14) |
C14 | 0.0476 (19) | 0.0632 (18) | 0.0502 (17) | −0.0093 (16) | −0.0092 (14) | 0.0047 (13) |
C15 | 0.0443 (17) | 0.0579 (19) | 0.0419 (16) | −0.0056 (13) | 0.0029 (12) | −0.0013 (12) |
C17 | 0.052 (3) | 0.098 (4) | 0.122 (5) | −0.017 (2) | −0.030 (2) | 0.028 (3) |
O4 | 0.0357 (10) | 0.0820 (15) | 0.1161 (19) | −0.0034 (10) | −0.0094 (11) | 0.0010 (13) |
N2' | 0.0346 (8) | 0.0367 (9) | 0.041 (4) | −0.0025 (6) | −0.0037 (13) | 0.0023 (13) |
C10' | 0.0363 (11) | 0.0352 (15) | 0.044 (3) | 0.0000 (9) | −0.0051 (17) | −0.0031 (18) |
C11' | 0.0475 (14) | 0.0643 (16) | 0.0496 (16) | −0.0027 (12) | 0.0039 (14) | −0.0145 (15) |
C12' | 0.0405 (14) | 0.076 (2) | 0.0784 (19) | −0.0006 (13) | 0.0130 (14) | −0.0227 (17) |
C13' | 0.0337 (15) | 0.0461 (15) | 0.0786 (19) | −0.0015 (11) | −0.0059 (14) | 0.0030 (14) |
C14' | 0.0476 (19) | 0.0632 (18) | 0.0502 (17) | −0.0093 (16) | −0.0092 (14) | 0.0047 (13) |
C15' | 0.0443 (17) | 0.0579 (19) | 0.0419 (16) | −0.0056 (13) | 0.0029 (12) | −0.0013 (12) |
C17' | 0.052 (3) | 0.098 (4) | 0.122 (5) | −0.017 (2) | −0.030 (2) | 0.028 (3) |
O4' | 0.0357 (10) | 0.0820 (15) | 0.1161 (19) | −0.0034 (10) | −0.0094 (11) | 0.0010 (13) |
S1 | 0.0414 (3) | 0.0359 (3) | 0.0700 (4) | −0.00154 (19) | −0.0095 (2) | −0.0005 (2) |
O1 | 0.0596 (9) | 0.0473 (8) | 0.0449 (7) | −0.0153 (6) | 0.0015 (6) | −0.0073 (6) |
O2 | 0.0591 (9) | 0.0482 (8) | 0.0417 (7) | 0.0025 (6) | 0.0011 (6) | 0.0083 (6) |
O3 | 0.0481 (8) | 0.1623 (18) | 0.1038 (13) | 0.0091 (9) | −0.0214 (8) | 0.0229 (12) |
N1 | 0.0348 (8) | 0.0394 (8) | 0.0463 (8) | −0.0035 (6) | −0.0028 (6) | −0.0003 (6) |
C1 | 0.0329 (9) | 0.0419 (9) | 0.0353 (8) | −0.0004 (7) | −0.0013 (7) | −0.0010 (7) |
C2 | 0.0426 (10) | 0.0399 (10) | 0.0402 (9) | −0.0087 (8) | 0.0037 (7) | 0.0012 (7) |
C3 | 0.0429 (10) | 0.0372 (9) | 0.0412 (9) | −0.0008 (7) | 0.0026 (7) | 0.0024 (7) |
C4 | 0.0327 (9) | 0.0442 (10) | 0.0433 (10) | −0.0041 (7) | −0.0007 (7) | −0.0047 (8) |
C5 | 0.0412 (10) | 0.0480 (10) | 0.0449 (10) | −0.0015 (8) | 0.0044 (8) | −0.0018 (8) |
C6 | 0.0511 (11) | 0.0536 (12) | 0.0467 (10) | 0.0004 (9) | −0.0072 (9) | 0.0009 (9) |
C7 | 0.0379 (11) | 0.0709 (14) | 0.0702 (14) | −0.0008 (10) | −0.0092 (10) | −0.0009 (11) |
C8 | 0.0370 (11) | 0.117 (2) | 0.0681 (15) | −0.0030 (12) | 0.0095 (10) | 0.0065 (14) |
C9 | 0.0434 (11) | 0.0916 (17) | 0.0452 (11) | −0.0045 (11) | 0.0029 (9) | 0.0067 (11) |
C16 | 0.0481 (8) | 0.1623 (18) | 0.1038 (13) | 0.0091 (9) | −0.0214 (8) | 0.0229 (12) |
N2—C1 | 1.352 (6) | C15'—H15' | 0.9300 |
N2—C10 | 1.426 (6) | C17'—O4' | 1.40 (2) |
N2—C3 | 1.462 (6) | C17'—H17D | 0.9600 |
C10—C15 | 1.376 (4) | C17'—H17E | 0.9600 |
C10—C11 | 1.388 (5) | C17'—H17F | 0.9600 |
C11—C12 | 1.374 (4) | S1—C1 | 1.669 (2) |
C11—H11 | 0.9300 | O1—C2 | 1.410 (2) |
C12—C13 | 1.388 (5) | O1—H1 | 0.8200 |
C12—H12 | 0.9300 | O2—C3 | 1.397 (2) |
C13—O4 | 1.372 (3) | O2—H2 | 0.8200 |
C13—C14 | 1.376 (5) | O3—C7 | 1.368 (3) |
C14—C15 | 1.394 (4) | O3—C16 | 1.413 (4) |
C14—H14 | 0.9300 | N1—C1 | 1.366 (2) |
C15—H15 | 0.9300 | N1—C4 | 1.434 (2) |
C17—O4 | 1.426 (17) | N1—C2 | 1.460 (2) |
C17—H17A | 0.9600 | C2—C3 | 1.523 (2) |
C17—H17B | 0.9600 | C2—H2A | 0.9800 |
C17—H17C | 0.9600 | C3—H3 | 0.9800 |
N2'—C1 | 1.382 (17) | C4—C5 | 1.371 (3) |
N2'—C10' | 1.438 (17) | C4—C9 | 1.392 (3) |
N2'—C3 | 1.478 (17) | C5—C6 | 1.385 (3) |
C10'—C11' | 1.364 (14) | C5—H5 | 0.9300 |
C10'—C15' | 1.377 (13) | C6—C7 | 1.381 (3) |
C11'—C12' | 1.391 (12) | C6—H6 | 0.9300 |
C11'—H11' | 0.9300 | C7—C8 | 1.381 (3) |
C12'—C13' | 1.374 (18) | C8—C9 | 1.373 (3) |
C12'—H12' | 0.9300 | C8—H8 | 0.9300 |
C13'—C14' | 1.385 (15) | C9—H9 | 0.9300 |
C13'—O4' | 1.400 (12) | C16—H16A | 0.9600 |
C14'—C15' | 1.365 (12) | C16—H16B | 0.9600 |
C14'—H14' | 0.9300 | C16—H16C | 0.9600 |
C1—N2—C10 | 128.7 (5) | C3—O2—H2 | 109.5 |
C1—N2—C3 | 112.1 (5) | C7—O3—C16 | 118.0 (2) |
C10—N2—C3 | 118.1 (4) | C1—N1—C4 | 126.88 (15) |
C15—C10—C11 | 119.1 (4) | C1—N1—C2 | 111.25 (14) |
C15—C10—N2 | 122.8 (6) | C4—N1—C2 | 119.84 (14) |
C11—C10—N2 | 117.8 (5) | N2—C1—N1 | 107.1 (3) |
C12—C11—C10 | 120.5 (3) | N2—C1—N2' | 9 (2) |
C12—C11—H11 | 119.7 | N1—C1—N2' | 108.9 (8) |
C10—C11—H11 | 119.7 | N2—C1—S1 | 125.4 (3) |
C11—C12—C13 | 119.8 (3) | N1—C1—S1 | 127.39 (13) |
C11—C12—H12 | 120.1 | N2'—C1—S1 | 123.4 (7) |
C13—C12—H12 | 120.1 | O1—C2—N1 | 110.71 (14) |
O4—C13—C14 | 125.1 (3) | O1—C2—C3 | 110.66 (15) |
O4—C13—C12 | 114.7 (3) | N1—C2—C3 | 102.08 (13) |
C14—C13—C12 | 120.2 (3) | O1—C2—H2A | 111.0 |
C13—C14—C15 | 119.2 (3) | N1—C2—H2A | 111.0 |
C13—C14—H14 | 120.4 | C3—C2—H2A | 111.0 |
C15—C14—H14 | 120.4 | O2—C3—N2 | 114.0 (5) |
C10—C15—C14 | 120.8 (3) | O2—C3—N2' | 106.0 (16) |
C10—C15—H15 | 119.6 | N2—C3—N2' | 8 (2) |
C14—C15—H15 | 119.6 | O2—C3—C2 | 114.63 (15) |
C13—O4—C17 | 117.8 (5) | N2—C3—C2 | 100.8 (3) |
C1—N2'—C10' | 128.5 (15) | N2'—C3—C2 | 104.4 (7) |
C1—N2'—C3 | 109.5 (12) | O2—C3—H3 | 109.0 |
C10'—N2'—C3 | 121.9 (14) | N2—C3—H3 | 109.0 |
C11'—C10'—C15' | 122.4 (13) | N2'—C3—H3 | 113.9 |
C11'—C10'—N2' | 119.6 (18) | C2—C3—H3 | 109.0 |
C15'—C10'—N2' | 116 (2) | C5—C4—C9 | 119.39 (17) |
C10'—C11'—C12' | 118.8 (10) | C5—C4—N1 | 121.47 (16) |
C10'—C11'—H11' | 120.6 | C9—C4—N1 | 118.93 (17) |
C12'—C11'—H11' | 120.6 | C4—C5—C6 | 121.34 (18) |
C13'—C12'—C11' | 119.2 (9) | C4—C5—H5 | 119.3 |
C13'—C12'—H12' | 120.4 | C6—C5—H5 | 119.3 |
C11'—C12'—H12' | 120.4 | C7—C6—C5 | 118.96 (19) |
C12'—C13'—C14' | 120.8 (9) | C7—C6—H6 | 120.5 |
C12'—C13'—O4' | 125.5 (10) | C5—C6—H6 | 120.5 |
C14'—C13'—O4' | 113.6 (10) | O3—C7—C8 | 116.0 (2) |
C15'—C14'—C13' | 120.1 (9) | O3—C7—C6 | 124.0 (2) |
C15'—C14'—H14' | 120.0 | C8—C7—C6 | 119.92 (19) |
C13'—C14'—H14' | 120.0 | C9—C8—C7 | 120.9 (2) |
C14'—C15'—C10' | 118.5 (11) | C9—C8—H8 | 119.6 |
C14'—C15'—H15' | 120.8 | C7—C8—H8 | 119.6 |
C10'—C15'—H15' | 120.8 | C8—C9—C4 | 119.5 (2) |
O4'—C17'—H17D | 109.5 | C8—C9—H9 | 120.2 |
O4'—C17'—H17E | 109.5 | C4—C9—H9 | 120.2 |
H17D—C17'—H17E | 109.5 | O3—C16—H16A | 109.5 |
O4'—C17'—H17F | 109.5 | O3—C16—H16B | 109.5 |
H17D—C17'—H17F | 109.5 | H16A—C16—H16B | 109.5 |
H17E—C17'—H17F | 109.5 | O3—C16—H16C | 109.5 |
C13'—O4'—C17' | 118 (2) | H16A—C16—H16C | 109.5 |
C2—O1—H1 | 109.5 | H16B—C16—H16C | 109.5 |
C1—N2—C10—C15 | 84.6 (12) | C10'—N2'—C1—N2 | 108 (10) |
C3—N2—C10—C15 | −82.6 (9) | C3—N2'—C1—N2 | −76 (6) |
C1—N2—C10—C11 | −102.0 (11) | C10'—N2'—C1—N1 | −172 (3) |
C3—N2—C10—C11 | 90.9 (9) | C3—N2'—C1—N1 | 4 (3) |
C15—C10—C11—C12 | 3.5 (7) | C10'—N2'—C1—S1 | 1 (5) |
N2—C10—C11—C12 | −170.2 (4) | C3—N2'—C1—S1 | 176.9 (12) |
C10—C11—C12—C13 | 1.1 (5) | C1—N1—C2—O1 | −97.38 (16) |
C11—C12—C13—O4 | 176.0 (3) | C4—N1—C2—O1 | 67.5 (2) |
C11—C12—C13—C14 | −5.0 (5) | C1—N1—C2—C3 | 20.43 (18) |
O4—C13—C14—C15 | −176.9 (3) | C4—N1—C2—C3 | −174.67 (14) |
C12—C13—C14—C15 | 4.1 (5) | C1—N2—C3—O2 | −100.6 (7) |
C11—C10—C15—C14 | −4.4 (7) | C10—N2—C3—O2 | 68.6 (9) |
N2—C10—C15—C14 | 169.0 (4) | C1—N2—C3—N2' | −95 (8) |
C13—C14—C15—C10 | 0.6 (5) | C10—N2—C3—N2' | 75 (7) |
C14—C13—O4—C17 | 6.4 (13) | C1—N2—C3—C2 | 22.7 (8) |
C12—C13—O4—C17 | −174.6 (13) | C10—N2—C3—C2 | −168.1 (7) |
C1—N2'—C10'—C11' | −123 (3) | C1—N2'—C3—O2 | −113 (2) |
C3—N2'—C10'—C11' | 62 (4) | C10'—N2'—C3—O2 | 64 (3) |
C1—N2'—C10'—C15' | 74 (4) | C1—N2'—C3—N2 | 73 (6) |
C3—N2'—C10'—C15' | −102 (3) | C10'—N2'—C3—N2 | −111 (10) |
C15'—C10'—C11'—C12' | −4 (2) | C1—N2'—C3—C2 | 9 (3) |
N2'—C10'—C11'—C12' | −166.4 (17) | C10'—N2'—C3—C2 | −175 (3) |
C10'—C11'—C12'—C13' | 1.4 (19) | O1—C2—C3—O2 | −143.51 (15) |
C11'—C12'—C13'—C14' | −0.6 (18) | N1—C2—C3—O2 | 98.64 (16) |
C11'—C12'—C13'—O4' | 176.8 (10) | O1—C2—C3—N2 | 93.6 (5) |
C12'—C13'—C14'—C15' | 2.3 (16) | N1—C2—C3—N2 | −24.3 (5) |
O4'—C13'—C14'—C15' | −175.4 (8) | O1—C2—C3—N2' | 101.0 (17) |
C13'—C14'—C15'—C10' | −4.6 (17) | N1—C2—C3—N2' | −16.9 (17) |
C11'—C10'—C15'—C14' | 6 (2) | C1—N1—C4—C5 | 64.1 (2) |
N2'—C10'—C15'—C14' | 168.7 (14) | C2—N1—C4—C5 | −98.2 (2) |
C12'—C13'—O4'—C17' | 7 (4) | C1—N1—C4—C9 | −121.2 (2) |
C14'—C13'—O4'—C17' | −176 (4) | C2—N1—C4—C9 | 76.4 (2) |
C10—N2—C1—N1 | −178.6 (9) | C9—C4—C5—C6 | −0.7 (3) |
C3—N2—C1—N1 | −10.9 (9) | N1—C4—C5—C6 | 173.91 (17) |
C10—N2—C1—N2' | −76 (7) | C4—C5—C6—C7 | 0.3 (3) |
C3—N2—C1—N2' | 92 (8) | C16—O3—C7—C8 | −175.2 (3) |
C10—N2—C1—S1 | 3.1 (14) | C16—O3—C7—C6 | 5.4 (4) |
C3—N2—C1—S1 | 170.9 (4) | C5—C6—C7—O3 | 179.8 (2) |
C4—N1—C1—N2 | −170.5 (6) | C5—C6—C7—C8 | 0.4 (3) |
C2—N1—C1—N2 | −6.9 (6) | O3—C7—C8—C9 | −180.0 (3) |
C4—N1—C1—N2' | −179.4 (19) | C6—C7—C8—C9 | −0.5 (4) |
C2—N1—C1—N2' | −15.8 (19) | C7—C8—C9—C4 | 0.0 (4) |
C4—N1—C1—S1 | 7.7 (3) | C5—C4—C9—C8 | 0.6 (3) |
C2—N1—C1—S1 | 171.30 (13) | N1—C4—C9—C8 | −174.2 (2) |
D—H···A | D—H | H···A | D···A | D—H···A |
O2—H2···O1i | 0.82 | 1.99 | 2.7971 (19) | 169 |
O1—H1···S1ii | 0.82 | 2.40 | 3.1799 (14) | 158 |
Symmetry codes: (i) x, −y+3/2, z+1/2; (ii) −x, y−1/2, −z+3/2. |
Experimental details
Crystal data | |
Chemical formula | C17H18N2O4S |
Mr | 346.39 |
Crystal system, space group | Monoclinic, P21/c |
Temperature (K) | 294 |
a, b, c (Å) | 13.9807 (12), 12.1789 (11), 10.0958 (9) |
β (°) | 93.815 (1) |
V (Å3) | 1715.2 (3) |
Z | 4 |
Radiation type | Mo Kα |
µ (mm−1) | 0.21 |
Crystal size (mm) | 0.49 × 0.35 × 0.34 |
Data collection | |
Diffractometer | Bruker SMART CCD |
Absorption correction | Multi-scan (SADABS; Sheldrick, 2003) |
Tmin, Tmax | 0.904, 0.931 |
No. of measured, independent and observed [I > 2σ(I)] reflections | 12720, 3179, 2654 |
Rint | 0.019 |
(sin θ/λ)max (Å−1) | 0.606 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.041, 0.112, 1.03 |
No. of reflections | 3179 |
No. of parameters | 244 |
No. of restraints | 10 |
H-atom treatment | H-atom parameters constrained |
Δρmax, Δρmin (e Å−3) | 0.41, −0.60 |
Computer programs: SMART (Bruker, 1997), SAINT (Bruker, 1997), SHELXS97 (Sheldrick, 2008), SHELXL97 (Sheldrick, 2008), SHELXTL (Sheldrick, 2008).
D—H···A | D—H | H···A | D···A | D—H···A |
O2—H2···O1i | 0.82 | 1.99 | 2.7971 (19) | 169.1 |
O1—H1···S1ii | 0.82 | 2.40 | 3.1799 (14) | 158.1 |
Symmetry codes: (i) x, −y+3/2, z+1/2; (ii) −x, y−1/2, −z+3/2. |
Acknowledgements
Financial support from Henan Normal University and the `Innovation Scientists and Technicians Troop Construction projects of Henan province' (grant No. 2008IRTSTHN002) is gratefully acknowledged. The authors also thank the Physiochemical Analysis Measurement Laboratory, College of Chemistry, Luoyang Normal University, for performing the X-ray analysis.
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.
Imidazolidine-2-one derivates often exhibit powerful bioactivitiy, as herbicides (Perronnet & Teche,1973), antidiabetics (Lenzen & Ahmad, 2001) and anti-HIV agents (Lam et al., 1994). Enders and his workers have earlier reported the synthesis and use of 4,5-dihydroxyimidazolidine-2-thiones. However, to our knowledge, there are few N,N'-diarylsubstituted 4,5-dihydroxyimidazolidine-2-thiones reported so far. As a continuation of our structural studies of such compounds (Zhang et al., 2009), we report here the molecular and supramolecular structures of (I) (Fig. 1).
In (I), the N2-containing (4-methoxyphenyl)imino group is disordered over two sites with refined occupancies of 0.747 (2) and 0.253 (2) (Fig. 1). The five-membered ring adopts a nearly half-chair conformation; the total puckering amplitudes Q2 (Cremer & Pople, 1975) are 0.247 (5) and 0.187 (11) Å, and the ring puckering parameters φ2 are 302.1 (9) and 333 (5)°, respectively, for the atom sequences, N1—C1—N2—C3—C2 and N1—C1—N2'—C3—C2. For an idealized half-chair, the ring puckering angle is φ2 = (36k + 18) ° (where k = zero or an integer). Therefore, the conformation for the five-membered ring in (I) is markedly different from that found in our previously reported compound (Zhang et al., 2007), where the five-membered ring shows a perfect envelope conformation. The difference in conformation is mainly attributed to van der Waals repulsions between the five-membered ring and its N1 and N2 phenyl substituents. Due to the existence of the van der Waals repulsions, the aryl groups exhibit nearly perpendicular orientations to the five-membered ring with the dihedral angle between the planes C4–C9 and C1/N1/C2 being 73.1 (2) °. Meanwhile, the dihedral angle between the planes C10–C15 and C1/N2/C3 is 89.7 (9) °. In addition, the C7 and C13 methoxy groups adopt closely coplanar orientations, respectively to their attached aryl rings, as shown by the torsion angles of C6—C7—O3—C16 [5.4 (4) °] and C14—C13—O4—C17 [6.4 (13) °]. Interestingly, the molecule (I) adopts a trans configuration (Fig. 1); the two hydroxyl groups lie on opposite sides of the five-membered ring. In view of the same trans configuration in 4,5-dihydroxyimidazolidine-2-thiones (Zhang et al., 2007; Zhang et al., 2009), we can draw a general conclusion that this trans-configuration is probably ubiquitous in 4,5-dihydroxyimidazolidine- 2-thiones.
The heterocyclic geometries of (I) also present some unexpected features. The C1—N1[1.366 (2) Å] and C1—N2 [1.352 (6) Å] bonds are significantly longer than the corresponding bonds in 4,5-dihydroxyimidazolidine-2-thione [1.335 (2) and 1.336 (2) Å; Zhang et al., 2007]. Conversely, the C1-S1[1.669 (2) Å] and C2—C3 [1.523 (2) Å] bonds are shorter than the corresponding bonds in 4,5-dihydroxyimidazolidine-2-thione [1.684 (2) and 1.537 (2) Å, respectively].
In analyzing the supramolecular structure of (I), for the sake of simplicity, we shall omit any consideration of the intermolecular C—H···O interactions involving a C—H bond from an aromatic ring, which is far too long to be significant. Thus, molecules of (I) are linked into sheets by only two independent O—H···S and O—H···O hydrogen bonds (Table 1), the formation of which is readily analyzed in terms of two one-dimensional substructures. In the first substructure, hydroxyl atom O1 in the molecule at (x,y,z) acts as a hydrogen-bond donor to thiocarbonyl atom S1 in the molecule at (-x, y - 1/2,-z + 3/2), so forming a C22(6) (Bernstein et al.,1995) chain along [010] and generated by 21 screw axis along (0,y,3/4) (Fig. 2). Similarly in the second substructure, hydroxyl atom O2 in the molecule at (x,y,z) acts as a hydrogen-bond donor to hydroxyl atom O1 in the molecule at (x,-y + 3/2,z + 1/2), so forming a C(5) (Bernstein et al., 1995) chain parallel to [001], this time generated by a 21 screw along (1/8,3/4,z) (Fig. 2). The combination of the two chain motifs is sufficient to link all the molecules into a sheet parallel to (100). Two such sheets pass through each unit cell; in each sheet, there are both enantiomers of (I); there are no direction-specific interactions between adjacent sheets, in particular C—H···π hydrogen bonds and π-π stacking interactions are absent.