Literature DB >> 22199780

7'-(4-Bromo-phen-yl)-5',6',7',7a'-tetra-hydro-dispiro-[indan-2,5'-pyrrolo-[1,2-c][1,3]thia-zole-6',2''-indan]-1,3,1''-trione.

Ang Chee Wei, Mohamed Ashraf Ali, Yeong Keng Yoon, Ching Kheng Quah, Hoong-Kun Fun.   

Abstract

In the title compound, C(28)H(20)BrNO(3)S, the thia-zolidine, pyrrolidine and two five-membered carbocyclic rings are in envelope conformations. The bromo-bound phenyl ring forms dihedral angles of 61.97 (18) and 88.30 (17)° with the other two benzene rings. The two benzene rings form a dihedral angle of 30.3 (2)°. The mol-ecular structure features an intra-molecular C-H⋯O hydrogen bond, which generates an S(6) ring motif. In the crystal, mol-ecules are linked into inversion dimers by pairs of C-H⋯O hydrogen bonds.

Entities:  

Year:  2011        PMID: 22199780      PMCID: PMC3238931          DOI: 10.1107/S1600536811046514

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


Related literature

For related structures and background references, see: Wei et al. (2011a ▶,b ▶,c ▶); Kumar et al. (2010 ▶). For hydrogen-bond motifs, see: Bernstein et al. (1995 ▶). For ring conformations, see: Cremer & Pople (1975 ▶). For bond-length data, see: Allen et al. (1987 ▶).

Experimental

Crystal data

C28H20BrNO3S M = 530.42 Triclinic, a = 10.2871 (11) Å b = 11.1375 (12) Å c = 11.5877 (13) Å α = 115.511 (2)° β = 90.075 (2)° γ = 97.347 (2)° V = 1186.0 (2) Å3 Z = 2 Mo Kα radiation μ = 1.85 mm−1 T = 296 K 0.31 × 0.13 × 0.05 mm

Data collection

Bruker SMART APEXII DUO CCD area-detector diffractometer Absorption correction: multi-scan (SADABS; Bruker, 2009 ▶) T min = 0.599, T max = 0.915 17888 measured reflections 5422 independent reflections 3789 reflections with I > 2σ(I) R int = 0.028

Refinement

R[F 2 > 2σ(F 2)] = 0.044 wR(F 2) = 0.136 S = 1.04 5422 reflections 307 parameters H-atom parameters constrained Δρmax = 0.76 e Å−3 Δρmin = −0.55 e Å−3 Data collection: APEX2 (Bruker, 2009 ▶); cell refinement: SAINT (Bruker, 2009 ▶); data reduction: SAINT; program(s) used to solve structure: SHELXTL (Sheldrick, 2008 ▶); program(s) used to refine structure: SHELXTL; molecular graphics: SHELXTL; software used to prepare material for publication: SHELXTL and PLATON (Spek, 2009 ▶). Crystal structure: contains datablock(s) global, I. DOI: 10.1107/S1600536811046514/hg5131sup1.cif Structure factors: contains datablock(s) I. DOI: 10.1107/S1600536811046514/hg5131Isup2.hkl Additional supplementary materials: crystallographic information; 3D view; checkCIF report
C28H20BrNO3SZ = 2
Mr = 530.42F(000) = 540
Triclinic, P1Dx = 1.485 Mg m3
Hall symbol: -P 1Mo Kα radiation, λ = 0.71073 Å
a = 10.2871 (11) ÅCell parameters from 5183 reflections
b = 11.1375 (12) Åθ = 2.7–25.1°
c = 11.5877 (13) ŵ = 1.85 mm1
α = 115.511 (2)°T = 296 K
β = 90.075 (2)°Plate, yellow
γ = 97.347 (2)°0.31 × 0.13 × 0.05 mm
V = 1186.0 (2) Å3
Bruker SMART APEXII DUO CCD area-detector diffractometer5422 independent reflections
Radiation source: fine-focus sealed tube3789 reflections with I > 2σ(I)
graphiteRint = 0.028
φ and ω scansθmax = 27.5°, θmin = 2.0°
Absorption correction: multi-scan (SADABS; Bruker, 2009)h = −13→13
Tmin = 0.599, Tmax = 0.915k = −14→14
17888 measured reflectionsl = −15→15
Refinement on F2Primary atom site location: structure-invariant direct methods
Least-squares matrix: fullSecondary atom site location: difference Fourier map
R[F2 > 2σ(F2)] = 0.044Hydrogen site location: inferred from neighbouring sites
wR(F2) = 0.136H-atom parameters constrained
S = 1.04w = 1/[σ2(Fo2) + (0.069P)2 + 0.5361P] where P = (Fo2 + 2Fc2)/3
5422 reflections(Δ/σ)max = 0.001
307 parametersΔρmax = 0.76 e Å3
0 restraintsΔρmin = −0.55 e Å3
Geometry. All esds (except the esd in the dihedral angle between two l.s. planes) are estimated using the full covariance matrix. The cell esds are taken into account individually in the estimation of esds in distances, angles and torsion angles; correlations between esds in cell parameters are only used when they are defined by crystal symmetry. An approximate (isotropic) treatment of cell esds is used for estimating esds 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 > 2sigma(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.
xyzUiso*/Ueq
Br1−0.23515 (4)0.46981 (4)1.06048 (4)0.06794 (16)
S1−0.16572 (9)0.80844 (13)0.47197 (11)0.0762 (3)
O10.3178 (2)0.7025 (2)0.4532 (2)0.0603 (6)
O20.0988 (2)1.0386 (2)0.7289 (2)0.0534 (5)
O30.2534 (2)0.9395 (2)0.9235 (2)0.0541 (6)
N10.0550 (2)0.7507 (2)0.5431 (2)0.0386 (5)
C10.3018 (3)0.7992 (3)0.5499 (3)0.0433 (6)
C20.3960 (3)0.9234 (3)0.6201 (3)0.0448 (7)
C30.5303 (3)0.9444 (4)0.6109 (4)0.0635 (9)
H3A0.57420.87550.55620.076*
C40.5965 (4)1.0703 (5)0.6853 (5)0.0809 (13)
H4A0.68711.08660.68290.097*
C50.5297 (4)1.1739 (5)0.7641 (5)0.0828 (13)
H5A0.57661.25880.81180.099*
C60.3960 (4)1.1540 (4)0.7733 (3)0.0614 (9)
H6A0.35191.22370.82640.074*
C70.3297 (3)1.0265 (3)0.7008 (3)0.0446 (7)
C80.1887 (3)0.9741 (3)0.6930 (3)0.0394 (6)
C90.1741 (2)0.8187 (3)0.6216 (3)0.0353 (6)
C100.1681 (2)0.7534 (3)0.7189 (2)0.0341 (5)
C110.2667 (3)0.8332 (3)0.8357 (3)0.0384 (6)
C120.3772 (3)0.7561 (3)0.8172 (3)0.0398 (6)
C130.4989 (3)0.7948 (4)0.8868 (3)0.0552 (8)
H13A0.51800.87770.95760.066*
C140.5894 (3)0.7062 (4)0.8473 (4)0.0717 (11)
H14A0.67170.72970.89060.086*
C150.5583 (3)0.5823 (4)0.7433 (4)0.0686 (10)
H15A0.62030.52350.71870.082*
C160.4386 (3)0.5428 (3)0.6747 (3)0.0529 (8)
H16A0.41950.45890.60520.064*
C170.3475 (3)0.6321 (3)0.7127 (3)0.0375 (6)
C180.2104 (3)0.6122 (3)0.6556 (3)0.0386 (6)
H18A0.15250.54880.67560.046*
H18B0.20990.57950.56330.046*
C190.0224 (2)0.7599 (3)0.7500 (3)0.0358 (6)
H19A0.01520.85460.80370.043*
C20−0.0338 (2)0.6824 (3)0.8229 (3)0.0356 (6)
C21−0.0347 (3)0.7498 (3)0.9562 (3)0.0442 (7)
H21A0.00240.83960.99820.053*
C22−0.0899 (3)0.6850 (3)1.0270 (3)0.0487 (7)
H22A−0.08810.73011.11580.058*
C23−0.1472 (3)0.5537 (3)0.9644 (3)0.0429 (6)
C24−0.1460 (3)0.4830 (3)0.8343 (3)0.0409 (6)
H24A−0.18270.39300.79360.049*
C25−0.0886 (3)0.5483 (3)0.7640 (3)0.0381 (6)
H25A−0.08710.50090.67560.046*
C26−0.0479 (3)0.7231 (3)0.6201 (3)0.0414 (6)
H26A−0.08290.62720.58000.050*
C27−0.1579 (3)0.8053 (4)0.6265 (4)0.0647 (10)
H27A−0.13780.89570.69470.078*
H27B−0.24060.76330.64140.078*
C280.0078 (3)0.8013 (3)0.4550 (3)0.0470 (7)
H28A0.02330.74200.36750.056*
H28B0.05440.89020.47550.056*
U11U22U33U12U13U23
Br10.0633 (3)0.0906 (3)0.0682 (3)0.00456 (19)0.01299 (18)0.0533 (2)
S10.0400 (5)0.1299 (9)0.0944 (7)0.0093 (5)−0.0060 (4)0.0830 (7)
O10.0624 (15)0.0585 (14)0.0492 (13)0.0145 (11)0.0144 (11)0.0115 (12)
O20.0492 (13)0.0408 (11)0.0637 (14)0.0105 (10)0.0092 (10)0.0156 (10)
O30.0513 (13)0.0450 (12)0.0475 (12)0.0035 (10)−0.0079 (10)0.0036 (10)
N10.0365 (12)0.0402 (12)0.0399 (12)0.0020 (10)−0.0049 (9)0.0192 (10)
C10.0411 (16)0.0490 (17)0.0414 (16)0.0090 (13)0.0064 (12)0.0204 (14)
C20.0369 (15)0.0549 (18)0.0472 (16)0.0011 (13)0.0006 (12)0.0278 (14)
C30.0393 (18)0.090 (3)0.072 (2)0.0106 (18)0.0107 (16)0.045 (2)
C40.040 (2)0.116 (4)0.096 (3)−0.018 (2)−0.011 (2)0.063 (3)
C50.066 (3)0.079 (3)0.089 (3)−0.035 (2)−0.017 (2)0.035 (2)
C60.061 (2)0.0531 (19)0.058 (2)−0.0120 (16)−0.0053 (16)0.0178 (16)
C70.0436 (16)0.0438 (16)0.0460 (16)−0.0044 (13)−0.0024 (13)0.0222 (14)
C80.0393 (15)0.0374 (14)0.0387 (14)0.0034 (12)0.0023 (12)0.0146 (12)
C90.0320 (13)0.0341 (13)0.0376 (14)0.0034 (10)0.0018 (11)0.0139 (11)
C100.0291 (13)0.0329 (13)0.0367 (14)0.0004 (10)−0.0031 (10)0.0128 (11)
C110.0377 (15)0.0356 (14)0.0361 (14)−0.0047 (11)−0.0079 (11)0.0130 (12)
C120.0316 (14)0.0457 (16)0.0398 (15)−0.0003 (11)−0.0017 (11)0.0180 (13)
C130.0404 (17)0.062 (2)0.0557 (19)−0.0019 (15)−0.0151 (14)0.0210 (16)
C140.0359 (18)0.098 (3)0.084 (3)0.0115 (18)−0.0127 (17)0.041 (2)
C150.0449 (19)0.082 (3)0.080 (3)0.0274 (18)0.0018 (18)0.031 (2)
C160.0449 (17)0.0545 (19)0.0543 (19)0.0165 (14)0.0028 (14)0.0164 (15)
C170.0292 (13)0.0425 (15)0.0416 (15)0.0038 (11)0.0000 (11)0.0193 (12)
C180.0345 (14)0.0357 (14)0.0415 (15)0.0006 (11)−0.0058 (11)0.0143 (12)
C190.0306 (13)0.0335 (13)0.0403 (14)0.0015 (10)−0.0013 (11)0.0142 (12)
C200.0267 (13)0.0398 (14)0.0413 (15)0.0041 (10)−0.0007 (10)0.0187 (12)
C210.0433 (16)0.0401 (15)0.0409 (16)0.0037 (12)−0.0005 (12)0.0104 (13)
C220.0507 (18)0.0543 (18)0.0356 (15)0.0088 (14)0.0025 (13)0.0140 (14)
C230.0340 (14)0.0562 (18)0.0476 (16)0.0092 (13)0.0067 (12)0.0303 (14)
C240.0369 (15)0.0392 (15)0.0448 (16)0.0013 (12)0.0003 (12)0.0178 (13)
C250.0342 (14)0.0402 (15)0.0361 (14)0.0030 (11)0.0004 (11)0.0136 (12)
C260.0363 (15)0.0441 (15)0.0459 (16)−0.0039 (12)−0.0080 (12)0.0242 (13)
C270.0330 (16)0.107 (3)0.082 (3)0.0131 (17)0.0047 (15)0.066 (2)
C280.0449 (16)0.0556 (18)0.0474 (17)0.0091 (14)−0.0008 (13)0.0284 (15)
Br1—C231.901 (3)C13—C141.377 (5)
S1—C281.805 (3)C13—H13A0.9300
S1—C271.808 (4)C14—C151.383 (6)
O1—C11.204 (4)C14—H14A0.9300
O2—C81.208 (3)C15—C161.378 (5)
O3—C111.209 (3)C15—H15A0.9300
N1—C91.439 (3)C16—C171.387 (4)
N1—C281.469 (4)C16—H16A0.9300
N1—C261.473 (4)C17—C181.505 (4)
C1—C21.483 (4)C18—H18A0.9700
C1—C91.543 (4)C18—H18B0.9700
C2—C31.383 (4)C19—C201.514 (4)
C2—C71.391 (4)C19—C261.531 (4)
C3—C41.374 (6)C19—H19A0.9800
C3—H3A0.9300C20—C251.386 (4)
C4—C51.390 (7)C20—C211.397 (4)
C4—H4A0.9300C21—C221.387 (4)
C5—C61.377 (6)C21—H21A0.9300
C5—H5A0.9300C22—C231.370 (4)
C6—C71.383 (4)C22—H22A0.9300
C6—H6A0.9300C23—C241.368 (4)
C7—C81.480 (4)C24—C251.395 (4)
C8—C91.551 (4)C24—H24A0.9300
C9—C101.580 (4)C25—H25A0.9300
C10—C111.543 (4)C26—C271.526 (4)
C10—C181.544 (4)C26—H26A0.9800
C10—C191.546 (4)C27—H27A0.9700
C11—C121.471 (4)C27—H27B0.9700
C12—C171.385 (4)C28—H28A0.9700
C12—C131.402 (4)C28—H28B0.9700
C28—S1—C2792.49 (14)C15—C16—C17117.9 (3)
C9—N1—C28119.0 (2)C15—C16—H16A121.1
C9—N1—C26110.4 (2)C17—C16—H16A121.1
C28—N1—C26113.6 (2)C12—C17—C16120.3 (3)
O1—C1—C2127.6 (3)C12—C17—C18111.6 (2)
O1—C1—C9125.5 (3)C16—C17—C18128.1 (3)
C2—C1—C9106.8 (2)C17—C18—C10104.2 (2)
C3—C2—C7121.3 (3)C17—C18—H18A110.9
C3—C2—C1128.7 (3)C10—C18—H18A110.9
C7—C2—C1110.0 (2)C17—C18—H18B110.9
C4—C3—C2117.7 (4)C10—C18—H18B110.9
C4—C3—H3A121.1H18A—C18—H18B108.9
C2—C3—H3A121.1C20—C19—C26116.1 (2)
C3—C4—C5120.9 (3)C20—C19—C10116.8 (2)
C3—C4—H4A119.6C26—C19—C10103.4 (2)
C5—C4—H4A119.6C20—C19—H19A106.6
C6—C5—C4121.7 (4)C26—C19—H19A106.6
C6—C5—H5A119.1C10—C19—H19A106.6
C4—C5—H5A119.1C25—C20—C21117.8 (3)
C5—C6—C7117.4 (4)C25—C20—C19123.4 (2)
C5—C6—H6A121.3C21—C20—C19118.8 (2)
C7—C6—H6A121.3C22—C21—C20121.1 (3)
C6—C7—C2120.9 (3)C22—C21—H21A119.5
C6—C7—C8129.8 (3)C20—C21—H21A119.5
C2—C7—C8109.3 (2)C23—C22—C21119.2 (3)
O2—C8—C7127.3 (3)C23—C22—H22A120.4
O2—C8—C9125.0 (2)C21—C22—H22A120.4
C7—C8—C9107.6 (2)C24—C23—C22121.7 (3)
N1—C9—C1115.4 (2)C24—C23—Br1119.3 (2)
N1—C9—C8117.0 (2)C22—C23—Br1119.0 (2)
C1—C9—C8101.0 (2)C23—C24—C25118.8 (3)
N1—C9—C10101.06 (19)C23—C24—H24A120.6
C1—C9—C10111.5 (2)C25—C24—H24A120.6
C8—C9—C10111.2 (2)C20—C25—C24121.5 (3)
C11—C10—C18104.5 (2)C20—C25—H25A119.3
C11—C10—C19114.4 (2)C24—C25—H25A119.3
C18—C10—C19116.7 (2)N1—C26—C27108.7 (2)
C11—C10—C9111.9 (2)N1—C26—C19104.9 (2)
C18—C10—C9110.4 (2)C27—C26—C19114.3 (3)
C19—C10—C999.1 (2)N1—C26—H26A109.6
O3—C11—C12128.0 (2)C27—C26—H26A109.6
O3—C11—C10125.1 (3)C19—C26—H26A109.6
C12—C11—C10107.0 (2)C26—C27—S1104.9 (2)
C17—C12—C13121.3 (3)C26—C27—H27A110.8
C17—C12—C11109.8 (2)S1—C27—H27A110.8
C13—C12—C11128.8 (3)C26—C27—H27B110.8
C14—C13—C12118.0 (3)S1—C27—H27B110.8
C14—C13—H13A121.0H27A—C27—H27B108.9
C12—C13—H13A121.0N1—C28—S1108.2 (2)
C13—C14—C15120.1 (3)N1—C28—H28A110.1
C13—C14—H14A119.9S1—C28—H28A110.1
C15—C14—H14A119.9N1—C28—H28B110.1
C16—C15—C14122.4 (3)S1—C28—H28B110.1
C16—C15—H15A118.8H28A—C28—H28B108.4
C14—C15—H15A118.8
O1—C1—C2—C3−17.4 (5)C10—C11—C12—C17−8.1 (3)
C9—C1—C2—C3164.9 (3)O3—C11—C12—C13−9.1 (5)
O1—C1—C2—C7161.0 (3)C10—C11—C12—C13170.2 (3)
C9—C1—C2—C7−16.6 (3)C17—C12—C13—C140.8 (5)
C7—C2—C3—C40.7 (5)C11—C12—C13—C14−177.2 (3)
C1—C2—C3—C4179.0 (3)C12—C13—C14—C15−1.3 (6)
C2—C3—C4—C5−1.9 (6)C13—C14—C15—C160.8 (7)
C3—C4—C5—C61.7 (7)C14—C15—C16—C170.2 (6)
C4—C5—C6—C7−0.1 (6)C13—C12—C17—C160.2 (4)
C5—C6—C7—C2−1.1 (5)C11—C12—C17—C16178.5 (3)
C5—C6—C7—C8178.3 (3)C13—C12—C17—C18178.6 (3)
C3—C2—C7—C60.8 (5)C11—C12—C17—C18−3.0 (3)
C1—C2—C7—C6−177.8 (3)C15—C16—C17—C12−0.7 (5)
C3—C2—C7—C8−178.7 (3)C15—C16—C17—C18−178.8 (3)
C1—C2—C7—C82.7 (3)C12—C17—C18—C1012.7 (3)
C6—C7—C8—O216.4 (5)C16—C17—C18—C10−169.0 (3)
C2—C7—C8—O2−164.2 (3)C11—C10—C18—C17−16.5 (3)
C6—C7—C8—C9−167.2 (3)C19—C10—C18—C17−143.9 (2)
C2—C7—C8—C912.2 (3)C9—C10—C18—C17104.0 (2)
C28—N1—C9—C1−71.8 (3)C11—C10—C19—C20−72.1 (3)
C26—N1—C9—C1154.2 (2)C18—C10—C19—C2050.3 (3)
C28—N1—C9—C846.8 (3)C9—C10—C19—C20168.7 (2)
C26—N1—C9—C8−87.2 (3)C11—C10—C19—C26159.1 (2)
C28—N1—C9—C10167.7 (2)C18—C10—C19—C26−78.6 (3)
C26—N1—C9—C1033.7 (3)C9—C10—C19—C2639.9 (2)
O1—C1—C9—N1−28.3 (4)C26—C19—C20—C2535.0 (4)
C2—C1—C9—N1149.5 (2)C10—C19—C20—C25−87.5 (3)
O1—C1—C9—C8−155.4 (3)C26—C19—C20—C21−142.9 (3)
C2—C1—C9—C822.3 (3)C10—C19—C20—C2194.7 (3)
O1—C1—C9—C1086.3 (3)C25—C20—C21—C22−0.7 (4)
C2—C1—C9—C10−96.0 (3)C19—C20—C21—C22177.3 (3)
O2—C8—C9—N129.4 (4)C20—C21—C22—C23−1.6 (5)
C7—C8—C9—N1−147.0 (2)C21—C22—C23—C243.1 (5)
O2—C8—C9—C1155.6 (3)C21—C22—C23—Br1−175.0 (2)
C7—C8—C9—C1−20.9 (3)C22—C23—C24—C25−2.2 (4)
O2—C8—C9—C10−85.9 (3)Br1—C23—C24—C25175.9 (2)
C7—C8—C9—C1097.6 (3)C21—C20—C25—C241.6 (4)
N1—C9—C10—C11−165.7 (2)C19—C20—C25—C24−176.3 (2)
C1—C9—C10—C1171.2 (3)C23—C24—C25—C20−0.2 (4)
C8—C9—C10—C11−40.8 (3)C9—N1—C26—C27114.1 (3)
N1—C9—C10—C1878.4 (2)C28—N1—C26—C27−22.5 (3)
C1—C9—C10—C18−44.8 (3)C9—N1—C26—C19−8.5 (3)
C8—C9—C10—C18−156.8 (2)C28—N1—C26—C19−145.1 (2)
N1—C9—C10—C19−44.6 (2)C20—C19—C26—N1−150.6 (2)
C1—C9—C10—C19−167.8 (2)C10—C19—C26—N1−21.3 (3)
C8—C9—C10—C1980.2 (2)C20—C19—C26—C2790.6 (3)
C18—C10—C11—O3−165.4 (3)C10—C19—C26—C27−140.1 (2)
C19—C10—C11—O3−36.6 (4)N1—C26—C27—S135.1 (3)
C9—C10—C11—O375.1 (3)C19—C26—C27—S1151.8 (2)
C18—C10—C11—C1215.4 (3)C28—S1—C27—C26−31.1 (3)
C19—C10—C11—C12144.1 (2)C9—N1—C28—S1−133.7 (2)
C9—C10—C11—C12−104.2 (2)C26—N1—C28—S1−1.1 (3)
O3—C11—C12—C17172.7 (3)C27—S1—C28—N119.3 (2)
D—H···AD—HH···AD···AD—H···A
C18—H18B···O10.972.423.080 (4)125.
C22—H22A···O2i0.932.443.172 (4)135.
Table 1

Hydrogen-bond geometry (Å, °)

D—H⋯AD—HH⋯ADAD—H⋯A
C18—H18B⋯O10.972.423.080 (4)125
C22—H22A⋯O2i0.932.443.172 (4)135

Symmetry code: (i) .

  6 in total

1.  A short history of SHELX.

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

2.  16-[(E)-Benzyl-idene]-13-hy-droxy-4-methyl-2-phenyl-4,14-diaza-penta-cyclo-[12.3.1.0.0.0]octa-deca-7(12),8,10-triene-6,17-dione.

Authors:  Raju Suresh Kumar; Hasnah Osman; Mohamed Ashraf Ali; Ching Kheng Quah; Hoong-Kun Fun
Journal:  Acta Crystallogr Sect E Struct Rep Online       Date:  2010-06-05

3.  4'-[5-(4-Fluoro-phen-yl)pyridin-3-yl]-1'-methyl-dispiro-[indan-2,2'-pyrrolidine-3',2''-indan]-1,3,1''-trione.

Authors:  Ang Chee Wei; Mohamed Ashraf Ali; Rusli Ismail; Ching Kheng Quah; Hoong-Kun Fun
Journal:  Acta Crystallogr Sect E Struct Rep Online       Date:  2011-08-27

4.  4'-(4-Chlorophenyl)-1'-methyldispiro[indan-2,2'-pyrrolidine-3',2''-indan]-1,3,1''-trione.

Authors:  Ang Chee Wei; Mohamed Ashraf Ali; Yeong Keng Yoon; Ching Kheng Quah; Hoong-Kun Fun
Journal:  Acta Crystallogr Sect E Struct Rep Online       Date:  2011-08-27

5.  1'-Methyl-4'-phenyldispiro-[indan-2,2'-pyrrolidine-3',2''-indan]-1,3,1''-trione.

Authors:  Ang Chee Wei; Mohamed Ashraf Ali; Tan Soo Choon; Ching Kheng Quah; Hoong-Kun Fun
Journal:  Acta Crystallogr Sect E Struct Rep Online       Date:  2011-08-27

6.  Structure validation in chemical crystallography.

Authors:  Anthony L Spek
Journal:  Acta Crystallogr D Biol Crystallogr       Date:  2009-01-20
  6 in total
  3 in total

1.  4'-(4-Bromo-phen-yl)-1'-methyl-dispiro-[acenaphthyl-ene-1,2'-pyrrolidine-3',2''-indane]-2,1''(1H)-dione.

Authors:  Ang Chee Wei; Mohamed Ashraf Ali; Tan Soo Choon; Suhana Arshad; Ibrahim Abdul Razak
Journal:  Acta Crystallogr Sect E Struct Rep Online       Date:  2012-04-13

2.  4'-(4-Fluoro-phen-yl)-1'-methyl-dispiro-[indane-2,2'-pyrrolidine-3',2''-indane]-1,3,1''-trione methanol hemisolvate.

Authors:  Mohamed Ashraf Ali; Elumalai Manogaran; Tan Soo Choon; Mohd Mustaqim Rosli; Ibrahim Abdul Razak
Journal:  Acta Crystallogr Sect E Struct Rep Online       Date:  2013-04-17

3.  4'-(3-Bromo-phen-yl)-1'-methyl-dispiro-[indan-2,2'-pyrrolidine-3',2''-indan]-1,3,1''-trione.

Authors:  Ang Chee Wei; Mohamed Ashraf Ali; Tan Soo Choon; Suhana Arshad; Ibrahim Abdul Razak
Journal:  Acta Crystallogr Sect E Struct Rep Online       Date:  2012-09-08
  3 in total

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