Literature DB >> 24764869

1-Acetyl-5-meth-oxy-4-(phenyl-sulfan-yl)imidazolidin-2-one.

Joel T Mague1, Alaa A-M Abdel-Aziz2, Adel S El-Azab3, Amer M Alanazi4.   

Abstract

The title compound, C12H14N2O3S, crystallizes with two independent mol-ecules (A and B) in the asymmetric unit. The five-membered imidazolidin-2-one rings in both mol-ecules are twisted about the C-C bond. In the crystal, the A and B mol-ecules are associated via pairs of N-H⋯O hydrogen bonds, forming A-B dimers. These dimers are linked via C-H⋯S hydrogen bonds, forming double dimers, which are in turn linked via C-H⋯O hydrogen bonds forming two-dimensional networks lying parallel to (001). There are also C-H⋯π inter-actions present, which consolide the layers and link them, so forming a three-dimensional structure.

Entities:  

Year:  2014        PMID: 24764869      PMCID: PMC3998308          DOI: 10.1107/S1600536814000117

Source DB:  PubMed          Journal:  Acta Crystallogr Sect E Struct Rep Online        ISSN: 1600-5368


Related literature

For the anti­tumor activity of imidazolidinones, see: Abdel-Aziz et al. (2012 ▶); Lee et al. (2000 ▶); Kim et al. (2003 ▶). For related crystal structures, see: Park et al. (2000 ▶); Abdel-Aziz et al. (2012 ▶); Kapon & Reisner (1989 ▶). For ring conformation analysis, see: Cremer & Pople (1975 ▶).

Experimental

Crystal data

C12H14N2O3S M = 266.31 Triclinic, a = 9.0371 (8) Å b = 12.0642 (10) Å c = 12.8369 (11) Å α = 93.066 (1)° β = 105.869 (1)° γ = 111.574 (1)° V = 1233.20 (18) Å3 Z = 4 Mo Kα radiation μ = 0.26 mm−1 T = 100 K 0.25 × 0.14 × 0.10 mm

Data collection

Bruker SMART APEX CCD diffractometer Absorption correction: multi-scan (SADABS; Bruker, 2010 ▶) T min = 0.847, T max = 0.974 22009 measured reflections 6246 independent reflections 5490 reflections with I > 2σ(I) R int = 0.034

Refinement

R[F 2 > 2σ(F 2)] = 0.034 wR(F 2) = 0.095 S = 1.03 6246 reflections 329 parameters H-atom parameters constrained Δρmax = 0.48 e Å−3 Δρmin = −0.35 e Å−3 Data collection: APEX2 (Bruker, 2010 ▶); cell refinement: SAINT (Bruker, 2010 ▶); 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 & Putz, 2012 ▶); software used to prepare material for publication: SHELXTL (Sheldrick, 2008 ▶). Crystal structure: contains datablock(s) I, global. DOI: 10.1107/S1600536814000117/su2683sup1.cif Structure factors: contains datablock(s) I. DOI: 10.1107/S1600536814000117/su2683Isup2.hkl Click here for additional data file. Supporting information file. DOI: 10.1107/S1600536814000117/su2683Isup3.cml CCDC reference: Additional supporting information: crystallographic information; 3D view; checkCIF report
C12H14N2O3SZ = 4
Mr = 266.31F(000) = 560
Triclinic, P1Dx = 1.434 Mg m3
Hall symbol: -P 1Mo Kα radiation, λ = 0.71073 Å
a = 9.0371 (8) ÅCell parameters from 9891 reflections
b = 12.0642 (10) Åθ = 2.3–29.1°
c = 12.8369 (11) ŵ = 0.26 mm1
α = 93.066 (1)°T = 100 K
β = 105.869 (1)°Rod, colourless
γ = 111.574 (1)°0.25 × 0.14 × 0.10 mm
V = 1233.20 (18) Å3
Bruker SMART APEX CCD diffractometer6246 independent reflections
Radiation source: fine-focus sealed tube5490 reflections with I > 2σ(I)
Graphite monochromatorRint = 0.034
φ and ω scansθmax = 29.1°, θmin = 1.8°
Absorption correction: multi-scan (SADABS; Bruker, 2010)h = −12→11
Tmin = 0.847, Tmax = 0.974k = −16→16
22009 measured reflectionsl = −17→17
Refinement on F2Primary atom site location: structure-invariant direct methods
Least-squares matrix: fullSecondary atom site location: difference Fourier map
R[F2 > 2σ(F2)] = 0.034Hydrogen site location: inferred from neighbouring sites
wR(F2) = 0.095H-atom parameters constrained
S = 1.03w = 1/[σ2(Fo2) + (0.0516P)2 + 0.3898P] where P = (Fo2 + 2Fc2)/3
6246 reflections(Δ/σ)max = 0.001
329 parametersΔρmax = 0.48 e Å3
0 restraintsΔρmin = −0.35 e Å3
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. H-atoms attached to carbon were placed in calculated positions (C—H = 0.95 - 0.98 Å) while those attached to nitrogen were placed in locations derived from a difference map. All were included as riding contributions with isotropic displacement parameters 1.2 - 1.5 times those of the attached atoms.
xyzUiso*/Ueq
S10.04876 (4)0.16574 (3)0.33282 (2)0.01531 (8)
O10.00144 (11)−0.07345 (8)0.32035 (7)0.01676 (18)
O20.08977 (13)−0.24894 (9)0.16722 (8)0.0265 (2)
O3−0.25546 (11)−0.12264 (8)−0.01801 (7)0.01828 (18)
N1−0.09455 (13)0.04366 (9)0.11887 (8)0.0155 (2)
H1N−0.13800.09290.08910.019*
N2−0.03201 (12)−0.11728 (9)0.13027 (8)0.0144 (2)
C10.11335 (15)0.31463 (10)0.30058 (9)0.0145 (2)
C20.28336 (16)0.38990 (11)0.33308 (11)0.0193 (2)
H20.36460.36070.36960.023*
C30.33403 (16)0.50771 (12)0.31202 (12)0.0228 (3)
H30.45010.55830.33300.027*
C40.21611 (17)0.55186 (12)0.26060 (11)0.0205 (3)
H40.25100.63270.24720.025*
C50.04669 (16)0.47702 (12)0.22883 (10)0.0197 (2)
H5−0.03420.50700.19340.024*
C6−0.00562 (15)0.35878 (11)0.24838 (10)0.0178 (2)
H6−0.12180.30810.22640.021*
C70.05695 (14)0.08366 (10)0.21295 (9)0.0131 (2)
H70.15540.13470.19120.016*
C80.07070 (14)−0.03672 (10)0.23658 (9)0.0137 (2)
H80.1896−0.02880.25670.016*
C9−0.14064 (15)−0.06988 (10)0.06753 (9)0.0137 (2)
C10−0.01687 (16)−0.22561 (11)0.10365 (10)0.0172 (2)
C11−0.13220 (18)−0.30806 (11)−0.00263 (11)0.0217 (3)
H11A−0.1031−0.3779−0.01150.033*
H11B−0.1205−0.2641−0.06390.033*
H11C−0.2483−0.3360−0.00190.033*
C120.05831 (19)−0.15414 (13)0.38084 (11)0.0250 (3)
H12A−0.0011−0.23640.33850.037*
H12B0.0359−0.15260.45130.037*
H12C0.1791−0.12860.39420.037*
S20.45632 (4)0.91180 (3)0.63984 (2)0.01550 (8)
O40.47788 (11)1.14846 (8)0.66767 (7)0.01680 (18)
O50.38711 (12)1.30406 (8)0.81309 (8)0.0219 (2)
O60.70722 (12)1.16581 (8)1.01055 (7)0.02057 (19)
N30.57467 (13)1.01168 (9)0.86090 (8)0.0165 (2)
H3N0.61130.96190.89870.020*
N40.50197 (13)1.16831 (9)0.85376 (8)0.0147 (2)
C130.38049 (15)0.75462 (11)0.64573 (10)0.0156 (2)
C140.27394 (16)0.67501 (12)0.54824 (10)0.0209 (3)
H140.24000.70590.48350.025*
C150.21730 (17)0.55073 (12)0.54547 (11)0.0231 (3)
H150.14590.49710.47860.028*
C160.26439 (17)0.50477 (12)0.63972 (12)0.0226 (3)
H160.22450.41980.63790.027*
C170.37027 (18)0.58348 (12)0.73695 (11)0.0216 (3)
H170.40220.55200.80170.026*
C180.42995 (16)0.70802 (11)0.74040 (10)0.0185 (2)
H180.50410.76130.80690.022*
C190.43039 (15)0.97353 (10)0.76257 (9)0.0134 (2)
H190.33020.91390.77710.016*
C200.40610 (14)1.09291 (10)0.74557 (9)0.0139 (2)
H200.28511.07940.72580.017*
C210.60722 (15)1.11992 (11)0.91856 (9)0.0149 (2)
C220.49203 (16)1.27940 (11)0.87707 (10)0.0164 (2)
C230.61395 (18)1.36279 (12)0.98098 (11)0.0233 (3)
H23A0.59171.43590.98860.035*
H23B0.72851.38500.97840.035*
H23C0.60141.32201.04400.035*
C240.35893 (17)1.16093 (12)0.57410 (10)0.0222 (3)
H24A0.27661.08060.53470.033*
H24B0.41751.20380.52500.033*
H24C0.30141.20690.59860.033*
U11U22U33U12U13U23
S10.01895 (15)0.01327 (14)0.01343 (13)0.00573 (11)0.00561 (11)0.00232 (10)
O10.0190 (4)0.0173 (4)0.0165 (4)0.0087 (3)0.0062 (3)0.0084 (3)
O20.0328 (5)0.0231 (5)0.0284 (5)0.0198 (4)0.0046 (4)0.0058 (4)
O30.0205 (4)0.0160 (4)0.0159 (4)0.0085 (4)0.0008 (3)0.0003 (3)
N10.0187 (5)0.0136 (5)0.0135 (4)0.0094 (4)0.0001 (4)0.0020 (4)
N20.0154 (5)0.0123 (5)0.0154 (4)0.0070 (4)0.0028 (4)0.0022 (4)
C10.0172 (5)0.0122 (5)0.0143 (5)0.0061 (4)0.0055 (4)0.0009 (4)
C20.0166 (6)0.0163 (6)0.0263 (6)0.0088 (5)0.0058 (5)0.0028 (5)
C30.0165 (6)0.0156 (6)0.0360 (7)0.0056 (5)0.0089 (5)0.0042 (5)
C40.0245 (6)0.0155 (6)0.0268 (6)0.0101 (5)0.0124 (5)0.0061 (5)
C50.0212 (6)0.0193 (6)0.0218 (6)0.0117 (5)0.0064 (5)0.0049 (5)
C60.0158 (5)0.0181 (6)0.0181 (5)0.0065 (5)0.0041 (4)0.0019 (5)
C70.0143 (5)0.0122 (5)0.0132 (5)0.0059 (4)0.0039 (4)0.0029 (4)
C80.0132 (5)0.0132 (5)0.0146 (5)0.0058 (4)0.0032 (4)0.0035 (4)
C90.0155 (5)0.0140 (5)0.0137 (5)0.0076 (4)0.0053 (4)0.0042 (4)
C100.0212 (6)0.0141 (5)0.0201 (6)0.0089 (5)0.0094 (5)0.0051 (5)
C110.0295 (7)0.0140 (6)0.0223 (6)0.0101 (5)0.0077 (5)0.0008 (5)
C120.0337 (7)0.0231 (7)0.0226 (6)0.0147 (6)0.0092 (6)0.0140 (5)
S20.01739 (15)0.01489 (15)0.01454 (14)0.00679 (11)0.00530 (11)0.00111 (11)
O40.0169 (4)0.0185 (4)0.0150 (4)0.0068 (3)0.0048 (3)0.0056 (3)
O50.0236 (5)0.0193 (4)0.0261 (5)0.0132 (4)0.0063 (4)0.0056 (4)
O60.0254 (5)0.0183 (4)0.0159 (4)0.0120 (4)−0.0006 (4)−0.0010 (3)
N30.0202 (5)0.0145 (5)0.0140 (4)0.0103 (4)0.0000 (4)0.0007 (4)
N40.0166 (5)0.0139 (5)0.0140 (4)0.0079 (4)0.0033 (4)0.0015 (4)
C130.0144 (5)0.0149 (5)0.0190 (5)0.0072 (4)0.0062 (4)0.0006 (4)
C140.0215 (6)0.0206 (6)0.0190 (6)0.0104 (5)0.0022 (5)−0.0012 (5)
C150.0191 (6)0.0187 (6)0.0265 (6)0.0064 (5)0.0030 (5)−0.0061 (5)
C160.0226 (6)0.0146 (6)0.0332 (7)0.0068 (5)0.0142 (5)0.0002 (5)
C170.0278 (7)0.0205 (6)0.0225 (6)0.0126 (5)0.0126 (5)0.0051 (5)
C180.0204 (6)0.0177 (6)0.0174 (5)0.0076 (5)0.0062 (5)0.0002 (5)
C190.0143 (5)0.0128 (5)0.0132 (5)0.0061 (4)0.0038 (4)0.0014 (4)
C200.0139 (5)0.0137 (5)0.0139 (5)0.0058 (4)0.0038 (4)0.0023 (4)
C210.0170 (5)0.0144 (5)0.0149 (5)0.0077 (5)0.0050 (4)0.0029 (4)
C220.0194 (6)0.0138 (5)0.0188 (5)0.0072 (5)0.0090 (5)0.0040 (4)
C230.0322 (7)0.0152 (6)0.0211 (6)0.0114 (5)0.0042 (5)−0.0001 (5)
C240.0257 (7)0.0235 (6)0.0161 (5)0.0112 (5)0.0021 (5)0.0063 (5)
S1—C11.7830 (12)S2—C131.7775 (13)
S1—C71.8186 (12)S2—C191.8157 (12)
O1—C81.3998 (14)O4—C201.4059 (14)
O1—C121.4301 (15)O4—C241.4329 (14)
O2—C101.2115 (15)O5—C221.2124 (15)
O3—C91.2264 (14)O6—C211.2232 (15)
N1—C91.3483 (15)N3—C211.3545 (15)
N1—C71.4538 (14)N3—C191.4496 (14)
N1—H1N0.8764N3—H3N0.8921
N2—C101.3975 (15)N4—C221.3980 (15)
N2—C91.4032 (14)N4—C211.4017 (15)
N2—C81.4733 (15)N4—C201.4609 (15)
C1—C21.3936 (17)C13—C141.3957 (17)
C1—C61.3978 (17)C13—C181.3977 (17)
C2—C31.3903 (18)C14—C151.3897 (18)
C2—H20.9500C14—H140.9500
C3—C41.3875 (18)C15—C161.384 (2)
C3—H30.9500C15—H150.9500
C4—C51.3886 (18)C16—C171.3882 (19)
C4—H40.9500C16—H160.9500
C5—C61.3887 (18)C17—C181.3907 (18)
C5—H50.9500C17—H170.9500
C6—H60.9500C18—H180.9500
C7—C81.5413 (16)C19—C201.5524 (16)
C7—H71.0000C19—H191.0000
C8—H81.0000C20—H201.0000
C10—C111.5006 (18)C22—C231.4976 (17)
C11—H11A0.9800C23—H23A0.9800
C11—H11B0.9800C23—H23B0.9800
C11—H11C0.9800C23—H23C0.9800
C12—H12A0.9800C24—H24A0.9800
C12—H12B0.9800C24—H24B0.9800
C12—H12C0.9800C24—H24C0.9800
C1—S1—C799.86 (5)C13—S2—C19101.64 (6)
C8—O1—C12115.46 (10)C20—O4—C24113.52 (9)
C9—N1—C7113.25 (10)C21—N3—C19113.13 (10)
C9—N1—H1N122.1C21—N3—H3N116.4
C7—N1—H1N123.2C19—N3—H3N125.0
C10—N2—C9128.26 (10)C22—N4—C21128.30 (10)
C10—N2—C8121.10 (10)C22—N4—C20119.61 (10)
C9—N2—C8110.62 (9)C21—N4—C20111.81 (9)
C2—C1—C6119.69 (11)C14—C13—C18119.31 (11)
C2—C1—S1119.75 (9)C14—C13—S2117.24 (10)
C6—C1—S1120.47 (9)C18—C13—S2123.35 (9)
C3—C2—C1119.98 (11)C15—C14—C13120.31 (12)
C3—C2—H2120.0C15—C14—H14119.8
C1—C2—H2120.0C13—C14—H14119.8
C4—C3—C2120.41 (12)C16—C15—C14120.29 (12)
C4—C3—H3119.8C16—C15—H15119.9
C2—C3—H3119.8C14—C15—H15119.9
C3—C4—C5119.56 (12)C15—C16—C17119.66 (12)
C3—C4—H4120.2C15—C16—H16120.2
C5—C4—H4120.2C17—C16—H16120.2
C4—C5—C6120.64 (12)C16—C17—C18120.61 (12)
C4—C5—H5119.7C16—C17—H17119.7
C6—C5—H5119.7C18—C17—H17119.7
C5—C6—C1119.71 (11)C17—C18—C13119.81 (11)
C5—C6—H6120.1C17—C18—H18120.1
C1—C6—H6120.1C13—C18—H18120.1
N1—C7—C8102.27 (9)N3—C19—C20102.59 (9)
N1—C7—S1114.45 (8)N3—C19—S2115.63 (8)
C8—C7—S1111.08 (8)C20—C19—S2109.31 (8)
N1—C7—H7109.6N3—C19—H19109.7
C8—C7—H7109.6C20—C19—H19109.7
S1—C7—H7109.6S2—C19—H19109.7
O1—C8—N2111.86 (9)O4—C20—N4108.69 (9)
O1—C8—C7108.49 (9)O4—C20—C19111.93 (9)
N2—C8—C7101.79 (9)N4—C20—C19101.96 (9)
O1—C8—H8111.4O4—C20—H20111.3
N2—C8—H8111.4N4—C20—H20111.3
C7—C8—H8111.4C19—C20—H20111.3
O3—C9—N1126.89 (11)O6—C21—N3126.56 (11)
O3—C9—N2125.95 (11)O6—C21—N4126.45 (11)
N1—C9—N2107.15 (10)N3—C21—N4106.99 (10)
O2—C10—N2118.56 (11)O5—C22—N4119.20 (11)
O2—C10—C11122.56 (11)O5—C22—C23123.21 (11)
N2—C10—C11118.88 (11)N4—C22—C23117.59 (11)
C10—C11—H11A109.5C22—C23—H23A109.5
C10—C11—H11B109.5C22—C23—H23B109.5
H11A—C11—H11B109.5H23A—C23—H23B109.5
C10—C11—H11C109.5C22—C23—H23C109.5
H11A—C11—H11C109.5H23A—C23—H23C109.5
H11B—C11—H11C109.5H23B—C23—H23C109.5
O1—C12—H12A109.5O4—C24—H24A109.5
O1—C12—H12B109.5O4—C24—H24B109.5
H12A—C12—H12B109.5H24A—C24—H24B109.5
O1—C12—H12C109.5O4—C24—H24C109.5
H12A—C12—H12C109.5H24A—C24—H24C109.5
H12B—C12—H12C109.5H24B—C24—H24C109.5
C7—S1—C1—C2−88.48 (10)C19—S2—C13—C14135.75 (10)
C7—S1—C1—C695.09 (10)C19—S2—C13—C18−48.11 (12)
C6—C1—C2—C3−0.98 (19)C18—C13—C14—C150.18 (19)
S1—C1—C2—C3−177.44 (10)S2—C13—C14—C15176.47 (10)
C1—C2—C3—C41.2 (2)C13—C14—C15—C160.8 (2)
C2—C3—C4—C5−0.9 (2)C14—C15—C16—C17−0.8 (2)
C3—C4—C5—C60.22 (19)C15—C16—C17—C18−0.3 (2)
C4—C5—C6—C10.03 (19)C16—C17—C18—C131.24 (19)
C2—C1—C6—C50.35 (18)C14—C13—C18—C17−1.19 (19)
S1—C1—C6—C5176.78 (9)S2—C13—C18—C17−177.25 (10)
C9—N1—C7—C8−17.42 (13)C21—N3—C19—C2017.05 (13)
C9—N1—C7—S1−137.63 (9)C21—N3—C19—S2135.93 (9)
C1—S1—C7—N1−85.84 (9)C13—S2—C19—N392.14 (9)
C1—S1—C7—C8158.98 (8)C13—S2—C19—C20−152.75 (8)
C12—O1—C8—N291.43 (12)C24—O4—C20—N4−128.97 (10)
C12—O1—C8—C7−157.09 (10)C24—O4—C20—C19119.19 (11)
C10—N2—C8—O1−82.90 (13)C22—N4—C20—O470.60 (13)
C9—N2—C8—O195.95 (11)C21—N4—C20—O4−103.86 (11)
C10—N2—C8—C7161.46 (10)C22—N4—C20—C19−171.06 (10)
C9—N2—C8—C7−19.68 (12)C21—N4—C20—C1914.49 (12)
N1—C7—C8—O1−97.00 (10)N3—C19—C20—O498.13 (10)
S1—C7—C8—O125.53 (11)S2—C19—C20—O4−25.09 (12)
N1—C7—C8—N221.08 (11)N3—C19—C20—N4−17.87 (11)
S1—C7—C8—N2143.61 (8)S2—C19—C20—N4−141.09 (8)
C7—N1—C9—O3−174.34 (12)C19—N3—C21—O6170.27 (12)
C7—N1—C9—N25.55 (13)C19—N3—C21—N4−8.52 (14)
C10—N2—C9—O38.5 (2)C22—N4—C21—O62.6 (2)
C8—N2—C9—O3−170.27 (11)C20—N4—C21—O6176.49 (12)
C10—N2—C9—N1−171.40 (11)C22—N4—C21—N3−178.58 (12)
C8—N2—C9—N19.84 (13)C20—N4—C21—N3−4.72 (13)
C9—N2—C10—O2177.09 (12)C21—N4—C22—O5−176.52 (12)
C8—N2—C10—O2−4.27 (18)C20—N4—C22—O510.04 (17)
C9—N2—C10—C11−2.51 (19)C21—N4—C22—C233.76 (19)
C8—N2—C10—C11176.13 (11)C20—N4—C22—C23−169.67 (11)
D—H···AD—HH···AD···AD—H···A
N1—H1N···O6i0.881.992.8483 (13)165
N3—H3N···O3ii0.891.992.8623 (13)167
C8—H8···S2iii1.002.863.7891 (12)156
C7—H7···O3iv1.002.633.4150 (15)135
C18—H18···O3ii0.952.553.4790 (15)167
C20—H20···O1v1.002.473.4604 (15)173
C2—H2···Cg2iii0.952.833.5830 (17)137
C15—H15···Cg10.952.683.4496 (15)138
Table 1

Hydrogen-bond geometry (Å, °)

Cg1 and Cg2 are the centroids of rings C1–C6 and C13–C18, respectively.

D—H⋯A D—HH⋯A DA D—H⋯A
N1—H1N⋯O6i 0.881.992.8483 (13)165
N3—H3N⋯O3ii 0.891.992.8623 (13)167
C8—H8⋯S2iii 1.002.863.7891 (12)156
C7—H7⋯O3iv 1.002.633.4150 (15)135
C18—H18⋯O3ii 0.952.553.4790 (15)167
C20—H20⋯O1v 1.002.473.4604 (15)173
C2—H2⋯Cg2iii 0.952.833.5830 (17)137
C15—H15⋯Cg10.952.683.4496 (15)138

Symmetry codes: (i) ; (ii) ; (iii) ; (iv) ; (v) .

  4 in total

1.  Multicentre hydrogen bonds in a 2:1 arylsulfonylimidazolone hydrochloride salt.

Authors:  K L Park; B G Moon; S H Jung; J G Kim; I H Suh
Journal:  Acta Crystallogr C       Date:  2000-10       Impact factor: 1.172

2.  A short history of SHELX.

Authors:  George M Sheldrick
Journal:  Acta Crystallogr A       Date:  2007-12-21       Impact factor: 2.290

3.  Effect of substituents on benzenesulfonyl motif of 4-phenyl-1-arylsulfonylimidazolidinones for their cytotoxicity.

Authors:  H S Lee; K L Park; S U Choi; C O Lee; S H Jung
Journal:  Arch Pharm Res       Date:  2000-12       Impact factor: 4.946

4.  Importance of sulfonylimidazolidinone motif of 4-phenyl-1-arylsulfonylimidazolidinones for their cytotoxicity: synthesis of 2-benzoyl-4-phenyl[1,2,5]thiazolidine-1,1-dioxides and their cytotoxcity.

Authors:  Il-Whan Kim; Chong-Kyo Lee; Hae Soo Kim; Sang-Hun Jung
Journal:  Arch Pharm Res       Date:  2003-01       Impact factor: 4.946

  4 in total

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