Literature DB >> 24427055

2-(4-Chloro-2-nitro-phen-yl)-9-phenyl-sulfonyl-9H-carbazole-3-carbaldehyde.

S Gopinath1, K Sethusankar1, Bose Muthu Ramalingam2, Arasambattu K Mohanakrishnan2.   

Abstract

In the title compound, C25H15ClN2O6S, the carbazole ring system is essentially planar, with a maximum deviation of 0.152 (3) Å for the C atom to which the 4-chloro-2-nitro-phenyl ring is attached. Its mean plane is almost orthogonal to the phenyl-sulfonyl and nitro-phenyl rings, making dihedral angles of 82.64 (14) and 79.89 (13)°, respectively. The N atom of the nitro group deviates by 0.032 (3) Å from the benzene ring to which it is attached. The mol-ecular structure features intra-molecular O-H⋯O and C-H⋯O hydrogen bonds, which generate three S(6) ring motifs. In the crystal, mol-ecules are linked by C-H⋯O hydrogen bonds, which generate C(6) and C(9) chains running in the [100] and [010] directions, respectively, forming a two-dimensional network lying parallel to (001). There are also R 4 (3)(28) supra-molecular graph-set ring motifs enclosed within these networks.

Entities:  

Year:  2013        PMID: 24427055      PMCID: PMC3884462          DOI: 10.1107/S1600536813022253

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


Related literature

For the biological activity and uses of carbazole derivatives, see: Itoigawa et al. (2000 ▶); Ramsewak et al. (1999 ▶). For their electronic properties and applications, see: Friend et al. (1999 ▶); Zhang et al. (2004 ▶). For related structures, see: Chakkaravarthi et al. (2008 ▶). For bond-length distortions, see: Allen et al. (1987 ▶). For graph-set notation, see: Bernstein et al. (1995 ▶). For the Thorpe–Ingold effect, see: Bassindale et al. (1984 ▶).

Experimental

Crystal data

C25H15ClN2O6S M = 506.91 Monoclinic, a = 8.1947 (15) Å b = 14.384 (3) Å c = 18.795 (3) Å β = 90.963 (9)° V = 2215.2 (7) Å3 Z = 4 Mo Kα radiation μ = 0.31 mm−1 T = 296 K 0.30 × 0.25 × 0.20 mm

Data collection

Bruker SMART APEXII CCD diffractometer Absorption correction: multi-scan (SADABS; Bruker, 2008 ▶) T min = 0.910, T max = 0.939 16586 measured reflections 3893 independent reflections 2809 reflections with I > 2σ(I) R int = 0.056

Refinement

R[F 2 > 2σ(F 2)] = 0.053 wR(F 2) = 0.172 S = 1.05 3893 reflections 316 parameters H-atom parameters constrained Δρmax = 0.42 e Å−3 Δρmin = −0.40 e Å−3 Data collection: APEX2 (Bruker, 2008 ▶); cell refinement: SAINT (Bruker, 2008 ▶); 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 for Windows (Farrugia, 2012 ▶) and Mercury (Macrae et al., 2008 ▶); software used to prepare material for publication: SHELXL97 and PLATON (Spek, 2009 ▶). Crystal structure: contains datablock(s) global, I. DOI: 10.1107/S1600536813022253/su2632sup1.cif Structure factors: contains datablock(s) I. DOI: 10.1107/S1600536813022253/su2632Isup2.hkl Click here for additional data file. Supplementary material file. DOI: 10.1107/S1600536813022253/su2632Isup3.cml Additional supplementary materials: crystallographic information; 3D view; checkCIF report
C25H15ClN2O6SF(000) = 1040
Mr = 506.91Dx = 1.520 Mg m3
Monoclinic, P21/cMo Kα radiation, λ = 0.71073 Å
Hall symbol: -P 2ybcCell parameters from 3893 reflections
a = 8.1947 (15) Åθ = 1.8–25.0°
b = 14.384 (3) ŵ = 0.31 mm1
c = 18.795 (3) ÅT = 296 K
β = 90.963 (9)°Block, yellow
V = 2215.2 (7) Å30.30 × 0.25 × 0.20 mm
Z = 4
Bruker SMART APEXII CCD diffractometer3893 independent reflections
Radiation source: fine-focus sealed tube2809 reflections with I > 2σ(I)
Graphite monochromatorRint = 0.056
ω & φ scansθmax = 25.0°, θmin = 1.8°
Absorption correction: multi-scan (SADABS; Bruker, 2008)h = −9→9
Tmin = 0.910, Tmax = 0.939k = −17→15
16586 measured reflectionsl = −22→22
Refinement on F2Primary atom site location: structure-invariant direct methods
Least-squares matrix: fullSecondary atom site location: difference Fourier map
R[F2 > 2σ(F2)] = 0.053Hydrogen site location: inferred from neighbouring sites
wR(F2) = 0.172H-atom parameters constrained
S = 1.05w = 1/[σ2(Fo2) + (0.0933P)2 + 0.9326P] where P = (Fo2 + 2Fc2)/3
3893 reflections(Δ/σ)max < 0.001
316 parametersΔρmax = 0.42 e Å3
0 restraintsΔρmin = −0.40 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.
xyzUiso*/Ueq
C10.2551 (3)0.6180 (2)0.50926 (15)0.0528 (8)
C20.3370 (4)0.6615 (3)0.56478 (17)0.0671 (9)
H20.33740.72590.56940.081*
C30.4184 (4)0.6050 (4)0.61323 (19)0.0788 (12)
H30.47720.63230.65050.095*
C40.4150 (5)0.5097 (4)0.60796 (19)0.0780 (11)
H40.47170.47400.64140.094*
C50.3290 (4)0.4662 (3)0.55391 (19)0.0685 (9)
H50.32410.40170.55120.082*
C60.2497 (3)0.5214 (2)0.50362 (16)0.0536 (8)
C70.1606 (3)0.4993 (2)0.43898 (16)0.0505 (7)
C80.1173 (3)0.5826 (2)0.40603 (16)0.0469 (7)
C90.0421 (3)0.5859 (2)0.33864 (16)0.0494 (7)
H90.01320.64210.31750.059*
C100.0132 (3)0.5029 (2)0.30519 (16)0.0501 (7)
C110.0462 (4)0.4168 (2)0.33792 (18)0.0561 (8)
C120.1204 (4)0.4155 (2)0.40598 (18)0.0569 (8)
C130.0128 (5)0.3305 (3)0.3022 (2)0.0770 (11)
H13−0.03180.33420.25650.092*
C140.3698 (3)0.7616 (2)0.37430 (17)0.0493 (7)
C150.3674 (4)0.7328 (2)0.3047 (2)0.0622 (9)
H150.26900.72010.28130.075*
C160.5117 (5)0.7232 (3)0.2703 (2)0.0809 (11)
H160.51250.70350.22320.097*
C170.6562 (5)0.7428 (3)0.3057 (3)0.0918 (14)
H170.75460.73550.28240.110*
C180.6566 (5)0.7726 (3)0.3743 (3)0.0935 (14)
H180.75490.78700.39710.112*
C190.5137 (4)0.7815 (3)0.4098 (2)0.0722 (10)
H190.51350.80070.45710.087*
C20−0.0564 (3)0.5080 (2)0.23145 (16)0.0503 (7)
C21−0.2215 (4)0.5008 (3)0.21838 (19)0.0681 (9)
H21−0.28920.48550.25580.082*
C22−0.2902 (4)0.5152 (3)0.1522 (2)0.0718 (10)
H22−0.40230.50920.14510.086*
C23−0.1919 (4)0.5385 (3)0.09668 (19)0.0658 (9)
C24−0.0268 (4)0.5468 (2)0.10637 (17)0.0592 (8)
H240.03990.56350.06890.071*
C250.0376 (3)0.5298 (2)0.17300 (16)0.0519 (7)
Cl1−0.27788 (15)0.55884 (9)0.01388 (6)0.1018 (4)
N10.1664 (3)0.65682 (17)0.45026 (13)0.0503 (6)
N20.2158 (3)0.5375 (2)0.18092 (15)0.0664 (8)
O10.1583 (3)0.33589 (17)0.43974 (14)0.0784 (7)
H10.12860.29160.41530.118*
O20.0370 (5)0.25321 (19)0.32590 (17)0.1032 (10)
O30.2092 (3)0.82164 (17)0.48325 (13)0.0717 (7)
O40.0573 (2)0.78288 (15)0.37344 (12)0.0569 (6)
O50.2857 (3)0.4869 (2)0.22158 (17)0.0960 (9)
O60.2834 (3)0.5962 (3)0.14560 (17)0.1149 (12)
S10.18862 (9)0.76577 (5)0.42149 (4)0.0504 (3)
U11U22U33U12U13U23
C10.0501 (15)0.063 (2)0.0456 (16)−0.0008 (13)0.0061 (13)0.0019 (15)
C20.071 (2)0.081 (3)0.0489 (19)−0.0099 (18)0.0001 (16)−0.0027 (17)
C30.071 (2)0.116 (4)0.049 (2)−0.006 (2)−0.0034 (17)0.004 (2)
C40.076 (2)0.108 (4)0.051 (2)0.013 (2)0.0055 (18)0.022 (2)
C50.073 (2)0.077 (2)0.057 (2)0.0105 (18)0.0189 (17)0.0186 (19)
C60.0520 (16)0.065 (2)0.0445 (16)−0.0013 (14)0.0122 (13)0.0055 (15)
C70.0482 (15)0.0523 (19)0.0514 (17)−0.0029 (13)0.0147 (13)0.0056 (15)
C80.0425 (13)0.0495 (18)0.0490 (16)−0.0033 (12)0.0080 (12)−0.0036 (14)
C90.0498 (15)0.0492 (18)0.0492 (17)−0.0020 (13)0.0025 (13)−0.0023 (14)
C100.0496 (15)0.0516 (19)0.0494 (17)−0.0076 (13)0.0112 (13)−0.0078 (15)
C110.0650 (18)0.0476 (19)0.0564 (19)−0.0101 (14)0.0183 (15)−0.0057 (15)
C120.0645 (18)0.048 (2)0.0587 (19)−0.0016 (14)0.0212 (15)0.0053 (16)
C130.106 (3)0.059 (2)0.068 (2)−0.011 (2)0.024 (2)−0.0087 (19)
C140.0473 (15)0.0424 (17)0.0580 (18)−0.0019 (12)−0.0019 (13)0.0068 (14)
C150.0558 (17)0.062 (2)0.069 (2)0.0010 (15)0.0040 (16)0.0054 (17)
C160.080 (3)0.083 (3)0.080 (3)0.008 (2)0.025 (2)0.015 (2)
C170.059 (2)0.099 (3)0.118 (4)0.007 (2)0.030 (2)0.031 (3)
C180.051 (2)0.109 (4)0.121 (4)−0.011 (2)−0.002 (2)0.025 (3)
C190.0564 (18)0.077 (3)0.083 (3)−0.0145 (16)−0.0066 (17)0.010 (2)
C200.0544 (15)0.0457 (18)0.0511 (17)−0.0051 (13)0.0080 (13)−0.0111 (14)
C210.0545 (17)0.083 (3)0.068 (2)−0.0100 (16)0.0110 (16)−0.0126 (19)
C220.0532 (18)0.084 (3)0.078 (3)0.0019 (16)−0.0033 (18)−0.017 (2)
C230.070 (2)0.060 (2)0.067 (2)0.0141 (16)−0.0138 (18)−0.0133 (18)
C240.0674 (19)0.058 (2)0.0519 (19)0.0037 (15)0.0072 (15)−0.0045 (15)
C250.0532 (16)0.0508 (19)0.0519 (18)−0.0011 (13)0.0042 (14)−0.0087 (14)
Cl10.1052 (8)0.1192 (10)0.0800 (7)0.0313 (7)−0.0284 (6)−0.0017 (6)
N10.0544 (13)0.0517 (16)0.0449 (13)−0.0047 (11)0.0020 (11)−0.0015 (12)
N20.0553 (15)0.093 (2)0.0514 (16)−0.0074 (15)0.0070 (13)−0.0066 (16)
O10.1124 (19)0.0498 (15)0.0736 (16)0.0026 (13)0.0212 (14)0.0123 (12)
O20.174 (3)0.0460 (17)0.091 (2)−0.0101 (17)0.026 (2)−0.0035 (15)
O30.0860 (15)0.0605 (15)0.0685 (15)−0.0006 (12)−0.0026 (12)−0.0224 (12)
O40.0465 (10)0.0543 (14)0.0696 (14)0.0067 (9)−0.0036 (10)−0.0058 (11)
O50.0603 (14)0.134 (3)0.093 (2)0.0160 (15)0.0053 (14)0.0219 (19)
O60.0769 (17)0.171 (3)0.097 (2)−0.045 (2)0.0073 (16)0.041 (2)
S10.0506 (4)0.0452 (5)0.0552 (5)0.0003 (3)−0.0015 (3)−0.0074 (3)
C1—C21.381 (4)C14—S11.743 (3)
C1—C61.394 (5)C15—C161.364 (5)
C1—N11.429 (4)C15—H150.9300
C2—C31.384 (5)C16—C171.378 (6)
C2—H20.9300C16—H160.9300
C3—C41.375 (6)C17—C181.359 (7)
C3—H30.9300C17—H170.9300
C4—C51.377 (5)C18—C191.364 (6)
C4—H40.9300C18—H180.9300
C5—C61.388 (5)C19—H190.9300
C5—H50.9300C20—C211.374 (4)
C6—C71.442 (4)C20—C251.388 (4)
C7—C121.392 (5)C21—C221.373 (5)
C7—C81.392 (4)C21—H210.9300
C8—C91.400 (4)C22—C231.370 (5)
C8—N11.408 (4)C22—H220.9300
C9—C101.369 (4)C23—C241.367 (5)
C9—H90.9300C23—Cl11.723 (4)
C10—C111.406 (4)C24—C251.373 (4)
C10—C201.492 (4)C24—H240.9300
C11—C121.407 (5)C25—N21.469 (4)
C11—C131.435 (5)N1—S11.669 (3)
C12—O11.343 (4)N2—O51.196 (4)
C13—O21.213 (5)N2—O61.213 (4)
C13—H130.9300O1—H10.8200
C14—C151.372 (5)O3—S11.420 (2)
C14—C191.375 (4)O4—S11.415 (2)
C2—C1—C6121.6 (3)C14—C15—H15120.5
C2—C1—N1130.1 (3)C15—C16—C17119.7 (4)
C6—C1—N1108.4 (3)C15—C16—H16120.2
C1—C2—C3117.0 (4)C17—C16—H16120.2
C1—C2—H2121.5C18—C17—C16120.7 (4)
C3—C2—H2121.5C18—C17—H17119.6
C4—C3—C2122.0 (4)C16—C17—H17119.6
C4—C3—H3119.0C17—C18—C19120.4 (4)
C2—C3—H3119.0C17—C18—H18119.8
C3—C4—C5121.0 (4)C19—C18—H18119.8
C3—C4—H4119.5C18—C19—C14118.6 (4)
C5—C4—H4119.5C18—C19—H19120.7
C4—C5—C6118.0 (4)C14—C19—H19120.7
C4—C5—H5121.0C21—C20—C25115.7 (3)
C6—C5—H5121.0C21—C20—C10121.5 (3)
C5—C6—C1120.3 (3)C25—C20—C10122.5 (3)
C5—C6—C7132.2 (3)C22—C21—C20122.6 (3)
C1—C6—C7107.4 (3)C22—C21—H21118.7
C12—C7—C8119.3 (3)C20—C21—H21118.7
C12—C7—C6132.8 (3)C23—C22—C21119.3 (3)
C8—C7—C6107.8 (3)C23—C22—H22120.4
C7—C8—C9122.5 (3)C21—C22—H22120.4
C7—C8—N1108.8 (3)C24—C23—C22120.9 (3)
C9—C8—N1128.7 (3)C24—C23—Cl1119.6 (3)
C10—C9—C8117.1 (3)C22—C23—Cl1119.5 (3)
C10—C9—H9121.4C23—C24—C25118.1 (3)
C8—C9—H9121.4C23—C24—H24121.0
C9—C10—C11122.4 (3)C25—C24—H24121.0
C9—C10—C20116.4 (3)C24—C25—C20123.5 (3)
C11—C10—C20121.2 (3)C24—C25—N2116.5 (3)
C10—C11—C12119.1 (3)C20—C25—N2120.1 (3)
C10—C11—C13121.5 (3)C8—N1—C1107.4 (2)
C12—C11—C13119.3 (3)C8—N1—S1123.5 (2)
O1—C12—C7118.5 (3)C1—N1—S1124.1 (2)
O1—C12—C11122.2 (3)O5—N2—O6123.7 (3)
C7—C12—C11119.3 (3)O5—N2—C25118.9 (3)
O2—C13—C11126.4 (4)O6—N2—C25117.4 (3)
O2—C13—H13116.8C12—O1—H1109.5
C11—C13—H13116.8O4—S1—O3120.14 (14)
C15—C14—C19121.6 (3)O4—S1—N1106.50 (13)
C15—C14—S1119.8 (2)O3—S1—N1106.18 (14)
C19—C14—S1118.5 (3)O4—S1—C14109.06 (14)
C16—C15—C14119.0 (3)O3—S1—C14110.19 (15)
C16—C15—H15120.5N1—S1—C14103.37 (13)
C6—C1—C2—C32.3 (5)C15—C14—C19—C180.3 (5)
N1—C1—C2—C3−177.4 (3)S1—C14—C19—C18175.9 (3)
C1—C2—C3—C4−1.8 (5)C9—C10—C20—C21−95.9 (4)
C2—C3—C4—C5−0.3 (6)C11—C10—C20—C2183.9 (4)
C3—C4—C5—C61.9 (5)C9—C10—C20—C2577.3 (4)
C4—C5—C6—C1−1.4 (5)C11—C10—C20—C25−102.9 (4)
C4—C5—C6—C7175.0 (3)C25—C20—C21—C22−0.8 (5)
C2—C1—C6—C5−0.7 (4)C10—C20—C21—C22172.9 (3)
N1—C1—C6—C5179.0 (3)C20—C21—C22—C23−0.6 (6)
C2—C1—C6—C7−177.9 (3)C21—C22—C23—C240.5 (6)
N1—C1—C6—C71.8 (3)C21—C22—C23—Cl1−178.7 (3)
C5—C6—C7—C121.8 (5)C22—C23—C24—C250.9 (5)
C1—C6—C7—C12178.6 (3)Cl1—C23—C24—C25−179.8 (3)
C5—C6—C7—C8−175.4 (3)C23—C24—C25—C20−2.5 (5)
C1—C6—C7—C81.4 (3)C23—C24—C25—N2178.8 (3)
C12—C7—C8—C9−3.6 (4)C21—C20—C25—C242.4 (5)
C6—C7—C8—C9174.1 (2)C10—C20—C25—C24−171.2 (3)
C12—C7—C8—N1178.3 (2)C21—C20—C25—N2−178.9 (3)
C6—C7—C8—N1−4.0 (3)C10—C20—C25—N27.5 (5)
C7—C8—C9—C10−0.5 (4)C7—C8—N1—C15.1 (3)
N1—C8—C9—C10177.2 (2)C9—C8—N1—C1−172.9 (3)
C8—C9—C10—C114.2 (4)C7—C8—N1—S1161.01 (19)
C8—C9—C10—C20−175.9 (2)C9—C8—N1—S1−16.9 (4)
C9—C10—C11—C12−3.7 (4)C2—C1—N1—C8175.5 (3)
C20—C10—C11—C12176.4 (3)C6—C1—N1—C8−4.2 (3)
C9—C10—C11—C13179.1 (3)C2—C1—N1—S119.7 (4)
C20—C10—C11—C13−0.7 (4)C6—C1—N1—S1−160.0 (2)
C8—C7—C12—O1−177.8 (3)C24—C25—N2—O5−145.9 (3)
C6—C7—C12—O15.2 (5)C20—C25—N2—O535.2 (5)
C8—C7—C12—C114.0 (4)C24—C25—N2—O634.5 (5)
C6—C7—C12—C11−173.0 (3)C20—C25—N2—O6−144.3 (3)
C10—C11—C12—O1−178.7 (3)C8—N1—S1—O440.4 (2)
C13—C11—C12—O1−1.5 (5)C1—N1—S1—O4−167.7 (2)
C10—C11—C12—C7−0.5 (4)C8—N1—S1—O3169.5 (2)
C13—C11—C12—C7176.7 (3)C1—N1—S1—O3−38.5 (3)
C10—C11—C13—O2179.9 (4)C8—N1—S1—C14−74.5 (2)
C12—C11—C13—O22.8 (6)C1—N1—S1—C1477.5 (2)
C19—C14—C15—C160.5 (5)C15—C14—S1—O4−29.1 (3)
S1—C14—C15—C16−175.0 (3)C19—C14—S1—O4155.3 (3)
C14—C15—C16—C17−0.3 (6)C15—C14—S1—O3−162.9 (3)
C15—C16—C17—C18−0.7 (6)C19—C14—S1—O321.4 (3)
C16—C17—C18—C191.6 (7)C15—C14—S1—N184.0 (3)
C17—C18—C19—C14−1.3 (6)C19—C14—S1—N1−91.7 (3)
D—H···AD—HH···AD···AD—H···A
O1—H1···O20.821.912.629 (4)146
C2—H2···O30.932.362.949 (5)121
C9—H9···O40.932.312.910 (4)122
C13—H13···O4i0.932.563.411 (4)153
C18—H18···O4ii0.932.533.287 (4)139
Table 1

Hydrogen-bond geometry (Å, °)

D—H⋯A D—HH⋯A DA D—H⋯A
O1—H1⋯O20.821.912.629 (4)146
C2—H2⋯O30.932.362.949 (5)121
C9—H9⋯O40.932.312.910 (4)122
C13—H13⋯O4i 0.932.563.411 (4)153
C18—H18⋯O4ii 0.932.533.287 (4)139

Symmetry codes: (i) ; (ii) .

  5 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.  Biologically active carbazole alkaloids from Murraya koenigii.

Authors:  R S Ramsewak; M G Nair; G M Strasburg; D L DeWitt; J L Nitiss
Journal:  J Agric Food Chem       Date:  1999-02       Impact factor: 5.279

3.  Antitumor agents. 203. Carbazole alkaloid murrayaquinone A and related synthetic carbazolequinones as cytotoxic agents.

Authors:  M Itoigawa; Y Kashiwada; C Ito; H Furukawa; Y Tachibana; K F Bastow; K H Lee
Journal:  J Nat Prod       Date:  2000-07       Impact factor: 4.050

4.  7,9-Dimethyl-5-phenyl-sulfonyl-5H-benzo[b]carbazole.

Authors:  G Chakkaravarthi; V Dhayalan; A K Mohanakrishnan; V Manivannan
Journal:  Acta Crystallogr Sect E Struct Rep Online       Date:  2008-08-06

5.  Structure validation in chemical crystallography.

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

1.  2-(4-Fluoro-2-nitro-phen-yl)-4-hy-droxy-9-phenyl-sulfonyl-9H-carbazole-3-carbaldehyde.

Authors:  S Gopinath; K Sethusankar; Velu Saravanan; Arasambattu K Mohanakrishnan
Journal:  Acta Crystallogr Sect E Struct Rep Online       Date:  2014-02-12

2.  2-(4,5-Di-chloro-2-nitro-phen-yl)-4-meth-oxy-3-methyl-9-phenyl-sulfon-yl-9H-carbazole.

Authors:  P Narayanan; K Sethusankar; Velu Saravanan; Arasambattu K Mohanakrishnan
Journal:  Acta Crystallogr Sect E Struct Rep Online       Date:  2014-01-29

3.  2-(4-Chloro-2-nitro-phen-yl)-4-meth-oxy-9-phenyl-sulfonyl-9H-carbazole-3-carbaldehyde.

Authors:  P Narayanan; K Sethusankar; Velu Saravanan; Arasambattu K Mohanakrishnan
Journal:  Acta Crystallogr Sect E Struct Rep Online       Date:  2014-01-31

4.  2-(4,5-Dimeth-oxy-2-nitro-phen-yl)-4-meth-oxy-3-methyl-9-phenyl-sulfonyl-9H-carbazole.

Authors:  P Narayanan; K Sethusankar; Velu Saravanan; Arasambattu K Mohanakrishnan
Journal:  Acta Crystallogr Sect E Struct Rep Online       Date:  2014-02-22

5.  2-(4,5-Dimeth-oxy-2-nitro-phen-yl)-4-meth-oxy-9-phenyl-sulfonyl-9H-carbazole-3-carbaldehyde.

Authors:  P Narayanan; K Sethusankar; Velu Saravanan; Arasambattu K Mohanakrishnan
Journal:  Acta Crystallogr Sect E Struct Rep Online       Date:  2014-03-12
  5 in total

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