organic compounds
5-Benzoyl-2-(5-bromo-1H-indol-3-yl)-4-(4-nitrophenyl)-1H-pyrrole-3-carbonitrile dimethyl sulfoxide monosolvate
aDepartment of Physics, Presidency College (Autonomous), Chennai 600 005, India, and bOrganic Chemistry Division, Central Leather Research Institute, Adyar, Chennai 602 020, India
*Correspondence e-mail: aspandian59@gmail.com
The title compound, C26H15BrN4O3·C2H6OS, contains five rings. The indole unit is essentially planar [maximum deviation = 0.0067 (1) Å for the N atom]. The central pyrrole ring makes dihedral angles of 44.1 (2) and 51.3 (2)° with the pendant indole ring system and the nitrobenzene ring, respectively. The benzene ring is inclined with the central pyrrole ring by 51.9 (3)°. In the crystal, N—H⋯O hydrogen-bonding interactions between aromatic-H-atom donors and sulfoxide-O-atom acceptors result in the formation of inversion dimers with an R42(16) ring motif. The molecules are further linked into chains running along the c axis by N—H⋯O, C—H⋯O and C—H⋯N hydrogen bonds.
Keywords: crystal structure; indole; 1H-indolylpyrrole derivative; hydrogen bonding.
CCDC reference: 1473319
Structure description
Indole derivatives are known to exhibit activities such as antitumour (Andreani et al., 2001); antiviral (Kolocouris et al., 1994) and anti-hepatitis C virus (Andreev et al., 2015). Indoles have attracted much attention because of their wide variety of applications especially in medicinal field. Indole derivatives are used as bioactive drugs (Stevenson et al., 2000) and they exhibit anti-allergic, central nervous system depressant and muscle relaxant properties (Harris & Uhle 1960; Ho et al., 1986). The title compound was prepared as part of our ongoing research to synthesize and evaluate the biological activities of structural analogues of 1H-indolylpyrrole derivatives (Kamalraja et al., 2014) and we report herein on its crystal structure.
The title compound contain 5-bromo-3-methyl-1H-indole connected to the 5-benzoyl-4-(4-nitrophenyl)-1H-pyrrole-3-carbonitrile system and a dimethyl sulfoxide solvent molecule (Fig. 1). The indole unit (N3/C19—C26) is essentially planar [maximum deviation = 0.0067 (1) Å for the N atom]. In the 2-(5-bromo-1H-indole-3-yl)-1H-pyrrole-3-carbonitrile portion, the central pyrrole ring and the pendent indole ring system make a dihedral angle of 44.1 (2)°; the torsion angles C16—C18—C19—C20 and N2—C18—C19—C26 for the link between them are 43.5 (7) and 38.6 (6)°, respectively]. The nitrobenzene and phenyl rings are inclined with the central pyrrole ring by 51.3 (2)° and 51.9 (3)°, respectively. Atoms N4 and C17 of the carbonitrile substituent deviate from the pyrrole ring plane by 0.197 (2) and 0.109 (1) Å, respectively, similar to the corresponding values in 2-amino-4-(2-naphthyl)thiophene-3-carbonitrile [0.194 (2) and 0.101 (3) Å, respectively; Çoruh et al., 2005]. A similar structure, 4-(2-azido-phenyl)-5-benzoyl-2-(1H-indol-3-yl)-1H-pyrrole-3-carbonitrile is reported by Vimala et al. (2015).
The π interaction in addition to N—H⋯O, C—H⋯O and C—H⋯N hydrogen-bonding interactions (Table 1). The N—H⋯O hydrogen-bonding interactions between aromatic H-atom donors and sulfoxide-O-atom acceptors result in an R42(16) ring motif, as shown in Fig. 2. The molecules are further linked into chains running along [001] direction (Fig. 3).
features a C—H⋯Synthesis and crystallization
For the synthesis, see: Kamalraja et al. (2014). To a stirred mixture of 4-nitrobenzaldehyde 1 (1.0 mmol), 3-(5-bromo-1H- indol-3-yl)-3-oxopropanenitrile 2 (1.0 mmol) and phenacylazide 3 (1.0 mmol) in H2O (3 ml), piperidine (0.25 mmol) was added at 80°C. The turbid solution slowly turned into a clear solution, followed by the formation of solid after 0.5 h. After completion of the reaction as indicated by TLC, the solid was filtered and washed with PE–EtOAc mixture (1:1 ratio, v/v, 5 ml). The compound was recrystallized by slow evaporation of an EtOH solution at room temperature to yield yellow block-shaped crystals. The yield of the isolated product was 90%.
Refinement
Crystal data, data collection and structure .
are summarized in Table 2Structural data
CCDC reference: 1473319
10.1107/S2414314616005976/hg4002sup1.cif
contains datablocks global, I. DOI:Structure factors: contains datablock I. DOI: 10.1107/S2414314616005976/hg4002Isup2.hkl
Supporting information file. DOI: 10.1107/S2414314616005976/hg4002Isup3.cml
For the synthesis, see: Kamalraja et al. (2014). To a stirred mixture of 4-nitrobenzaldehyde 1 (1.0 mmol), 3-(5-bromo-1H- indol-3-yl)-3-oxopropanenitrile 2 (1.0 mmol) and phenacylazide 3 (1.0 mmol) in H2O (3 ml), piperidine (0.25 mmol) was added at 80°C. The turbid solution slowly turned into a clear solution, followed by the formation of solid after 0.5 h. After completion of the reaction as indicated by TLC, the solid was filtered and washed with PE–EtOAc mixture (1:1 ratio, v/v, 5 ml). The compound was recrystallized by slow evaporation of an EtOH solution at room temperature to yield yellow block-shaped crystals. The yield of the isolated product was 90%.
Indole derivatives are known to exhibit activities such as antitumour (Andreani et al., 2001); antiviral (Kolocouris et al., 1994) and anti-hepatitis C virus (Andreev et al., 2015). Indoles have attracted much attention because of their wide variety of applications especially in medicinal field. Indole derivatives are used as bioactive drugs (Stevenson et al., 2000) and they exhibit anti-allergic, central nervous system depressant and muscle relaxant properties (Harris & Uhle 1960; Ho et al., 1986). The title compound was synthesize as a part of our ongoing research to synthesize and evaluate the biological activities of structural analogues of 1H-indolylpyrrole derivatives (Kamalraja et al., 2014) and reported herein on their crystal structure.
The title compound contain 5-bromo-3-methyl-1H-indole connected to the 5-benzoyl-4-(4-nitrophenyl)-1H-pyrrole-3-carbonitrile system and a dimethyl sulfoxide solvent molecule (Fig. 1). The indole unit (N3/C19—C26) is essentially coplanar [maximum deviation = 0.0067 (su?) Å for N atom]. In the 2-(5-bromo-1H-indole-3-yl)-1H-pyrrole-3-carbonitrile portion, the central pyrrole ring and the pendent indole ring system make a dihedral angle of 44.1 (2)°; the torsion angles C16—C18—C19—C20 and N2—C18—C19—C26 for the link between them are 43.5 (7) and 38.6 (6)°, respectively] . The nitrobenzene and phenyl rings are inclined with the central pyrrole ring by 51.3 (2)° and 51.9 (3)°, respectively. Atoms N4 and C17 of the carbonitrile substituent deviate from the pyrrole ring plane by 0.197 (2) and 0.109 (1) Å, respectively, similar to the corresponding values in 2-amino-4-(2-naphthyl)thiophene-3-carbonitrile [0.194 (2) and 0.101 (3) Å, respectively; Çoruh et al., 2005]. A similar structure, 4-(2-azido-phenyl)-5-benzoyl-2-(1H-indol-3-yl)-1H-pyrrole-3-carbonitrile is reported by Vimala et al. (2015).
The π interaction in addition to N—H···O, C—H···O and C—H···N hydrogen-bonding interactions (Table 1). The N—H···O hydrogen-bonding interactions between aromatic H-atom donors and sulfoxide-O-atom acceptors result in an R42(16) ring motif, as shown in Fig 3. The molecules are further linked into chains running along [001] direction (Fig 4).
features a C—H···Data collection: APEX2 (Bruker, 2008); cell
SAINT (Bruker, 2008); data reduction: SAINT (Bruker, 2008); 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); software used to prepare material for publication: SHELXL97 (Sheldrick, 2008) and PLATON (Spek, 2009).Fig. 1. A view of the title compound with the atom-numbering scheme and displacement ellipsoids are drawn at 30% probability level. | |
Fig. 2. N—H···O interactions (dotted lines) generating an R42(16) ring motif. | |
Fig. 3. A partial packing view, showing hydrogen-bonded chain structure running along the c axis. |
C26H15BrN4O3·C2H6OS | Z = 2 |
Mr = 589.46 | F(000) = 600 |
Triclinic, P1 | Dx = 1.470 Mg m−3 |
Hall symbol: -P 1 | Mo Kα radiation, λ = 0.71073 Å |
a = 10.1721 (3) Å | Cell parameters from 3272 reflections |
b = 11.2475 (3) Å | θ = 2.3–25.0° |
c = 12.0154 (4) Å | µ = 1.66 mm−1 |
α = 79.638 (2)° | T = 293 K |
β = 82.454 (2)° | Block, yellow |
γ = 82.371 (2)° | 0.21 × 0.19 × 0.18 mm |
V = 1332.14 (7) Å3 |
Bruker SMART APEXII CCD diffractometer | 4694 independent reflections |
Radiation source: fine-focus sealed tube | 3272 reflections with I > 2σ(I) |
Graphite monochromator | Rint = 0.037 |
ω and φ scans | θmax = 25.0°, θmin = 2.3° |
Absorption correction: multi-scan (SADABS; Bruker, 2008) | h = −12→12 |
Tmin = 0.712, Tmax = 0.741 | k = −13→13 |
24122 measured reflections | l = −14→14 |
Refinement on F2 | Secondary atom site location: difference Fourier map |
Least-squares matrix: full | Hydrogen site location: inferred from neighbouring sites |
R[F2 > 2σ(F2)] = 0.059 | H-atom parameters constrained |
wR(F2) = 0.186 | w = 1/[σ2(Fo2) + (0.P)2 + 1.7603P] where P = (Fo2 + 2Fc2)/3 |
S = 1.04 | (Δ/σ)max < 0.001 |
4694 reflections | Δρmax = 0.93 e Å−3 |
344 parameters | Δρmin = −0.66 e Å−3 |
0 restraints | Extinction correction: SHELXL97 (Sheldrick, 2008), Fc*=kFc[1+0.001xFc2λ3/sin(2θ)]-1/4 |
Primary atom site location: structure-invariant direct methods | Extinction coefficient: 0.0085 (18) |
C26H15BrN4O3·C2H6OS | γ = 82.371 (2)° |
Mr = 589.46 | V = 1332.14 (7) Å3 |
Triclinic, P1 | Z = 2 |
a = 10.1721 (3) Å | Mo Kα radiation |
b = 11.2475 (3) Å | µ = 1.66 mm−1 |
c = 12.0154 (4) Å | T = 293 K |
α = 79.638 (2)° | 0.21 × 0.19 × 0.18 mm |
β = 82.454 (2)° |
Bruker SMART APEXII CCD diffractometer | 4694 independent reflections |
Absorption correction: multi-scan (SADABS; Bruker, 2008) | 3272 reflections with I > 2σ(I) |
Tmin = 0.712, Tmax = 0.741 | Rint = 0.037 |
24122 measured reflections |
R[F2 > 2σ(F2)] = 0.059 | 0 restraints |
wR(F2) = 0.186 | H-atom parameters constrained |
S = 1.04 | Δρmax = 0.93 e Å−3 |
4694 reflections | Δρmin = −0.66 e Å−3 |
344 parameters |
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. |
x | y | z | Uiso*/Ueq | ||
Br1 | 0.49737 (5) | 0.66722 (5) | 0.13859 (6) | 0.0800 (3) | |
S | 0.78523 (17) | 0.57068 (14) | 0.37985 (14) | 0.0802 (5) | |
N1 | 1.4544 (5) | 1.2779 (4) | 0.2474 (4) | 0.0639 (11) | |
N2 | 1.0331 (3) | 0.7630 (3) | 0.1857 (3) | 0.0427 (8) | |
H2 | 0.9831 | 0.7082 | 0.2188 | 0.051* | |
N3 | 1.0226 (4) | 0.6139 (3) | −0.1434 (3) | 0.0475 (9) | |
H3 | 1.0515 | 0.5781 | −0.2008 | 0.057* | |
N4 | 1.2224 (4) | 1.0041 (4) | −0.1418 (3) | 0.0591 (10) | |
O1 | 1.4065 (5) | 1.3381 (4) | 0.3185 (4) | 0.0938 (14) | |
O2 | 1.5640 (4) | 1.2893 (4) | 0.1934 (4) | 0.0864 (12) | |
O3 | 0.9785 (4) | 0.7663 (3) | 0.4168 (3) | 0.0694 (10) | |
O4 | 0.9070 (3) | 0.5529 (3) | 0.2988 (3) | 0.0615 (9) | |
C1 | 1.3124 (5) | 0.8293 (5) | 0.3937 (4) | 0.0628 (13) | |
H1 | 1.3422 | 0.8005 | 0.3259 | 0.075* | |
C2 | 1.4022 (7) | 0.8582 (6) | 0.4588 (6) | 0.095 (2) | |
H2A | 1.4933 | 0.8478 | 0.4355 | 0.114* | |
C3 | 1.3562 (10) | 0.9028 (7) | 0.5590 (7) | 0.113 (3) | |
H3A | 1.4164 | 0.9250 | 0.6014 | 0.135* | |
C4 | 1.2255 (11) | 0.9141 (7) | 0.5950 (6) | 0.108 (3) | |
H4 | 1.1956 | 0.9428 | 0.6629 | 0.130* | |
C5 | 1.1354 (7) | 0.8837 (5) | 0.5322 (4) | 0.0733 (16) | |
H5 | 1.0450 | 0.8902 | 0.5584 | 0.088* | |
C6 | 1.1786 (5) | 0.8436 (4) | 0.4307 (4) | 0.0489 (11) | |
C7 | 1.0757 (5) | 0.8122 (4) | 0.3660 (3) | 0.0468 (10) | |
C8 | 1.0946 (4) | 0.8329 (4) | 0.2412 (3) | 0.0411 (9) | |
C9 | 1.1633 (4) | 0.9123 (3) | 0.1602 (3) | 0.0371 (9) | |
C10 | 1.2376 (4) | 1.0098 (3) | 0.1792 (3) | 0.0371 (9) | |
C11 | 1.1791 (4) | 1.0927 (4) | 0.2482 (4) | 0.0447 (10) | |
H11 | 1.0904 | 1.0899 | 0.2787 | 0.054* | |
C12 | 1.2497 (5) | 1.1790 (4) | 0.2724 (4) | 0.0512 (11) | |
H12 | 1.2106 | 1.2328 | 0.3209 | 0.061* | |
C13 | 1.3789 (5) | 1.1843 (4) | 0.2239 (4) | 0.0488 (11) | |
C14 | 1.4384 (4) | 1.1073 (4) | 0.1515 (4) | 0.0542 (12) | |
H14 | 1.5251 | 1.1141 | 0.1174 | 0.065* | |
C15 | 1.3672 (4) | 1.0191 (4) | 0.1300 (4) | 0.0469 (10) | |
H15 | 1.4070 | 0.9654 | 0.0818 | 0.056* | |
C16 | 1.1427 (4) | 0.8859 (4) | 0.0530 (3) | 0.0381 (9) | |
C17 | 1.1864 (4) | 0.9507 (4) | −0.0557 (4) | 0.0416 (9) | |
C18 | 1.0622 (4) | 0.7921 (3) | 0.0716 (3) | 0.0388 (9) | |
C19 | 1.0173 (4) | 0.7268 (4) | −0.0071 (3) | 0.0419 (9) | |
C20 | 1.0932 (4) | 0.6838 (4) | −0.0978 (4) | 0.0477 (10) | |
H20 | 1.1801 | 0.7002 | −0.1241 | 0.057* | |
C21 | 0.8990 (4) | 0.6092 (3) | −0.0842 (3) | 0.0404 (9) | |
C22 | 0.7946 (5) | 0.5478 (4) | −0.0975 (4) | 0.0499 (11) | |
H22 | 0.8037 | 0.4975 | −0.1522 | 0.060* | |
C23 | 0.6783 (5) | 0.5625 (4) | −0.0288 (4) | 0.0531 (11) | |
H23 | 0.6070 | 0.5215 | −0.0359 | 0.064* | |
C24 | 0.6658 (4) | 0.6400 (4) | 0.0532 (4) | 0.0508 (11) | |
C25 | 0.7696 (4) | 0.6980 (4) | 0.0706 (4) | 0.0440 (10) | |
H25 | 0.7599 | 0.7473 | 0.1262 | 0.053* | |
C26 | 0.8895 (4) | 0.6812 (3) | 0.0028 (3) | 0.0391 (9) | |
C27 | 0.6901 (7) | 0.4510 (7) | 0.3716 (7) | 0.109 (2) | |
H27A | 0.6612 | 0.4623 | 0.2972 | 0.163* | |
H27B | 0.6136 | 0.4520 | 0.4277 | 0.163* | |
H27C | 0.7442 | 0.3743 | 0.3856 | 0.163* | |
C28 | 0.8199 (9) | 0.5262 (8) | 0.5162 (6) | 0.112 (2) | |
H28A | 0.8722 | 0.5827 | 0.5358 | 0.168* | |
H28B | 0.8689 | 0.4466 | 0.5240 | 0.168* | |
H28C | 0.7380 | 0.5239 | 0.5660 | 0.168* |
U11 | U22 | U33 | U12 | U13 | U23 | |
Br1 | 0.0520 (4) | 0.0853 (5) | 0.1107 (6) | −0.0224 (3) | 0.0108 (3) | −0.0413 (4) |
S | 0.0833 (10) | 0.0708 (9) | 0.0873 (11) | −0.0297 (8) | 0.0217 (8) | −0.0221 (8) |
N1 | 0.067 (3) | 0.058 (3) | 0.077 (3) | −0.020 (2) | −0.022 (2) | −0.017 (2) |
N2 | 0.047 (2) | 0.0433 (19) | 0.0414 (19) | −0.0205 (15) | −0.0028 (15) | −0.0062 (15) |
N3 | 0.052 (2) | 0.053 (2) | 0.042 (2) | −0.0118 (17) | −0.0029 (17) | −0.0191 (16) |
N4 | 0.070 (3) | 0.061 (2) | 0.047 (2) | −0.019 (2) | 0.002 (2) | −0.0079 (19) |
O1 | 0.094 (3) | 0.094 (3) | 0.114 (3) | −0.028 (2) | −0.013 (3) | −0.060 (3) |
O2 | 0.067 (3) | 0.085 (3) | 0.121 (3) | −0.038 (2) | −0.017 (2) | −0.026 (2) |
O3 | 0.077 (2) | 0.086 (2) | 0.0494 (19) | −0.043 (2) | 0.0096 (17) | −0.0105 (17) |
O4 | 0.076 (2) | 0.0576 (19) | 0.0553 (19) | −0.0289 (17) | 0.0117 (17) | −0.0198 (15) |
C1 | 0.071 (3) | 0.065 (3) | 0.054 (3) | −0.016 (3) | −0.016 (3) | −0.001 (2) |
C2 | 0.092 (5) | 0.098 (5) | 0.098 (5) | −0.037 (4) | −0.047 (4) | 0.022 (4) |
C3 | 0.151 (8) | 0.111 (6) | 0.095 (6) | −0.057 (6) | −0.080 (6) | 0.013 (4) |
C4 | 0.183 (9) | 0.097 (5) | 0.063 (4) | −0.040 (6) | −0.048 (5) | −0.017 (3) |
C5 | 0.107 (5) | 0.073 (4) | 0.043 (3) | −0.012 (3) | −0.014 (3) | −0.014 (2) |
C6 | 0.067 (3) | 0.042 (2) | 0.040 (2) | −0.014 (2) | −0.008 (2) | −0.0062 (18) |
C7 | 0.058 (3) | 0.041 (2) | 0.042 (2) | −0.011 (2) | 0.005 (2) | −0.0112 (18) |
C8 | 0.046 (2) | 0.043 (2) | 0.038 (2) | −0.0145 (18) | −0.0021 (18) | −0.0089 (17) |
C9 | 0.038 (2) | 0.041 (2) | 0.036 (2) | −0.0107 (17) | −0.0035 (17) | −0.0111 (16) |
C10 | 0.044 (2) | 0.038 (2) | 0.032 (2) | −0.0122 (17) | −0.0060 (17) | −0.0037 (16) |
C11 | 0.042 (2) | 0.046 (2) | 0.049 (2) | −0.0124 (18) | 0.0027 (18) | −0.0144 (19) |
C12 | 0.060 (3) | 0.044 (2) | 0.054 (3) | −0.008 (2) | −0.008 (2) | −0.017 (2) |
C13 | 0.052 (3) | 0.048 (2) | 0.053 (3) | −0.020 (2) | −0.016 (2) | −0.008 (2) |
C14 | 0.040 (2) | 0.063 (3) | 0.064 (3) | −0.020 (2) | 0.000 (2) | −0.016 (2) |
C15 | 0.045 (2) | 0.052 (2) | 0.049 (2) | −0.0155 (19) | 0.0021 (19) | −0.019 (2) |
C16 | 0.034 (2) | 0.045 (2) | 0.038 (2) | −0.0084 (17) | −0.0005 (16) | −0.0110 (17) |
C17 | 0.043 (2) | 0.041 (2) | 0.044 (2) | −0.0109 (18) | −0.0043 (19) | −0.0113 (19) |
C18 | 0.039 (2) | 0.039 (2) | 0.041 (2) | −0.0092 (17) | −0.0037 (17) | −0.0108 (17) |
C19 | 0.047 (2) | 0.038 (2) | 0.045 (2) | −0.0165 (18) | −0.0060 (18) | −0.0084 (17) |
C20 | 0.048 (2) | 0.054 (3) | 0.045 (2) | −0.015 (2) | −0.001 (2) | −0.0125 (19) |
C21 | 0.047 (2) | 0.036 (2) | 0.041 (2) | −0.0082 (18) | −0.0084 (19) | −0.0080 (17) |
C22 | 0.056 (3) | 0.043 (2) | 0.057 (3) | −0.008 (2) | −0.015 (2) | −0.016 (2) |
C23 | 0.045 (3) | 0.049 (3) | 0.072 (3) | −0.014 (2) | −0.016 (2) | −0.016 (2) |
C24 | 0.048 (3) | 0.046 (2) | 0.063 (3) | −0.016 (2) | −0.006 (2) | −0.012 (2) |
C25 | 0.048 (2) | 0.039 (2) | 0.048 (2) | −0.0117 (18) | −0.004 (2) | −0.0129 (18) |
C26 | 0.046 (2) | 0.033 (2) | 0.041 (2) | −0.0109 (17) | −0.0111 (18) | −0.0047 (16) |
C27 | 0.102 (5) | 0.107 (5) | 0.124 (6) | −0.063 (4) | −0.004 (4) | −0.001 (4) |
C28 | 0.139 (7) | 0.119 (6) | 0.081 (5) | −0.034 (5) | 0.004 (4) | −0.021 (4) |
C1—C2 | 1.382 (8) | C18—C19 | 1.447 (5) |
C1—H1 | 0.9300 | C19—C20 | 1.374 (6) |
C2—C3 | 1.388 (11) | C20—H20 | 0.9300 |
C2—H2A | 0.9300 | C21—C22 | 1.382 (6) |
C3—H3A | 0.9300 | C22—H22 | 0.9300 |
C4—C3 | 1.340 (12) | C23—C22 | 1.359 (6) |
C4—H4 | 0.9300 | C23—C24 | 1.412 (6) |
C5—C4 | 1.372 (9) | C23—H23 | 0.9300 |
C5—H5 | 0.9300 | C25—C24 | 1.369 (6) |
C6—C1 | 1.373 (7) | C25—C26 | 1.386 (6) |
C6—C5 | 1.375 (7) | C25—H25 | 0.9300 |
C7—O3 | 1.216 (5) | C26—C21 | 1.419 (5) |
C7—C6 | 1.495 (6) | C26—C19 | 1.443 (5) |
C8—C7 | 1.466 (6) | S—C27 | 1.782 (6) |
C9—C8 | 1.382 (5) | C27—H27A | 0.9600 |
C9—C16 | 1.421 (5) | C27—H27B | 0.9600 |
C10—C15 | 1.382 (6) | C27—H27C | 0.9600 |
C10—C11 | 1.383 (6) | S—O4 | 1.486 (4) |
C10—C9 | 1.477 (5) | S—C28 | 1.693 (7) |
C11—C12 | 1.373 (6) | C28—H28A | 0.9600 |
C11—H11 | 0.9300 | C28—H28B | 0.9600 |
C12—H12 | 0.9300 | C28—H28C | 0.9600 |
C13—C12 | 1.370 (6) | N1—O1 | 1.199 (6) |
C13—C14 | 1.367 (6) | N1—O2 | 1.225 (6) |
C14—H14 | 0.9300 | N2—C18 | 1.354 (5) |
C13—N1 | 1.468 (6) | N2—C8 | 1.373 (5) |
C15—C14 | 1.380 (6) | N2—H2 | 0.8600 |
C15—H15 | 0.9300 | N3—C20 | 1.357 (5) |
C17—N4 | 1.141 (5) | N3—C21 | 1.363 (5) |
C17—C16 | 1.423 (6) | N3—H3 | 0.8600 |
C18—C16 | 1.389 (5) | Br1—C24 | 1.896 (5) |
C18—N2—C8 | 110.7 (3) | C13—C12—H12 | 120.6 |
C18—N2—H2 | 124.7 | C11—C12—H12 | 120.6 |
C8—N2—H2 | 124.7 | O3—C7—C8 | 120.1 (4) |
C15—C10—C11 | 118.7 (4) | O3—C7—C6 | 120.1 (4) |
C15—C10—C9 | 120.9 (4) | C8—C7—C6 | 119.8 (4) |
C11—C10—C9 | 120.4 (4) | C1—C6—C5 | 120.2 (5) |
C8—C9—C16 | 106.1 (3) | C1—C6—C7 | 122.2 (4) |
C8—C9—C10 | 127.7 (3) | C5—C6—C7 | 117.6 (5) |
C16—C9—C10 | 126.2 (3) | C25—C24—C23 | 122.3 (4) |
C24—C25—C26 | 118.0 (4) | C25—C24—Br1 | 119.4 (3) |
C24—C25—H25 | 121.0 | C23—C24—Br1 | 118.3 (3) |
C26—C25—H25 | 121.0 | C18—C16—C9 | 108.4 (3) |
C14—C15—C10 | 120.8 (4) | C18—C16—C17 | 125.1 (3) |
C14—C15—H15 | 119.6 | C9—C16—C17 | 126.3 (3) |
C10—C15—H15 | 119.6 | N3—C20—C19 | 110.0 (4) |
C20—N3—C21 | 109.5 (3) | N3—C20—H20 | 125.0 |
C20—N3—H3 | 125.2 | C19—C20—H20 | 125.0 |
C21—N3—H3 | 125.2 | C23—C22—C21 | 118.6 (4) |
C25—C26—C21 | 119.4 (4) | C23—C22—H22 | 120.7 |
C25—C26—C19 | 134.7 (4) | C21—C22—H22 | 120.7 |
C21—C26—C19 | 105.8 (4) | C4—C5—C6 | 120.1 (7) |
N4—C17—C16 | 178.7 (4) | C4—C5—H5 | 119.9 |
C12—C11—C10 | 121.0 (4) | C6—C5—H5 | 119.9 |
C12—C11—H11 | 119.5 | C6—C1—C2 | 119.1 (6) |
C10—C11—H11 | 119.5 | C6—C1—H1 | 120.5 |
C14—C13—C12 | 121.9 (4) | C2—C1—H1 | 120.5 |
C14—C13—N1 | 118.9 (4) | C3—C4—C5 | 120.4 (7) |
C12—C13—N1 | 119.2 (4) | C3—C4—H4 | 119.8 |
C22—C23—C24 | 120.0 (4) | C5—C4—H4 | 119.8 |
C22—C23—H23 | 120.0 | C1—C2—C3 | 119.8 (7) |
C24—C23—H23 | 120.0 | C1—C2—H2A | 120.1 |
C13—C14—C15 | 118.8 (4) | C3—C2—H2A | 120.1 |
C13—C14—H14 | 120.6 | C4—C3—C2 | 120.4 (6) |
C15—C14—H14 | 120.6 | C4—C3—H3A | 119.8 |
N2—C8—C9 | 108.1 (3) | C2—C3—H3A | 119.8 |
N2—C8—C7 | 118.1 (3) | O4—S—C28 | 110.9 (3) |
C9—C8—C7 | 133.8 (4) | O4—S—C27 | 104.9 (3) |
N2—C18—C16 | 106.8 (3) | C28—S—C27 | 98.1 (4) |
N2—C18—C19 | 122.1 (3) | S—C28—H28A | 109.5 |
C16—C18—C19 | 131.1 (4) | S—C28—H28B | 109.5 |
C20—C19—C26 | 106.5 (3) | H28A—C28—H28B | 109.5 |
C20—C19—C18 | 126.5 (4) | S—C28—H28C | 109.5 |
C26—C19—C18 | 126.6 (4) | H28A—C28—H28C | 109.5 |
N3—C21—C22 | 130.4 (4) | H28B—C28—H28C | 109.5 |
N3—C21—C26 | 108.1 (3) | S—C27—H27A | 109.5 |
C22—C21—C26 | 121.5 (4) | S—C27—H27B | 109.5 |
O1—N1—O2 | 123.6 (4) | H27A—C27—H27B | 109.5 |
O1—N1—C13 | 118.7 (5) | S—C27—H27C | 109.5 |
O2—N1—C13 | 117.7 (4) | H27A—C27—H27C | 109.5 |
C13—C12—C11 | 118.8 (4) | H27B—C27—H27C | 109.5 |
C15—C10—C9—C8 | 129.3 (5) | C12—C13—N1—O2 | −172.1 (4) |
C11—C10—C9—C8 | −49.7 (6) | C14—C13—C12—C11 | 0.7 (7) |
C15—C10—C9—C16 | −54.2 (6) | N1—C13—C12—C11 | 178.8 (4) |
C11—C10—C9—C16 | 126.7 (4) | C10—C11—C12—C13 | 2.1 (7) |
C11—C10—C15—C14 | 1.7 (6) | N2—C8—C7—O3 | −23.4 (6) |
C9—C10—C15—C14 | −177.4 (4) | C9—C8—C7—O3 | 155.8 (5) |
C24—C25—C26—C21 | 2.5 (6) | N2—C8—C7—C6 | 154.5 (4) |
C24—C25—C26—C19 | 178.4 (4) | C9—C8—C7—C6 | −26.3 (7) |
C15—C10—C11—C12 | −3.2 (6) | O3—C7—C6—C1 | 142.4 (5) |
C9—C10—C11—C12 | 175.8 (4) | C8—C7—C6—C1 | −35.4 (6) |
C12—C13—C14—C15 | −2.2 (7) | O3—C7—C6—C5 | −35.1 (6) |
N1—C13—C14—C15 | 179.7 (4) | C8—C7—C6—C5 | 147.0 (4) |
C10—C15—C14—C13 | 1.0 (7) | C26—C25—C24—C23 | 1.4 (7) |
C18—N2—C8—C9 | 1.5 (5) | C26—C25—C24—Br1 | −176.7 (3) |
C18—N2—C8—C7 | −179.1 (4) | C22—C23—C24—C25 | −3.0 (7) |
C16—C9—C8—N2 | −1.0 (5) | C22—C23—C24—Br1 | 175.2 (3) |
C10—C9—C8—N2 | 176.0 (4) | N2—C18—C16—C9 | 0.7 (5) |
C16—C9—C8—C7 | 179.7 (5) | C19—C18—C16—C9 | −176.3 (4) |
C10—C9—C8—C7 | −3.3 (8) | N2—C18—C16—C17 | −174.3 (4) |
C8—N2—C18—C16 | −1.4 (5) | C19—C18—C16—C17 | 8.7 (7) |
C8—N2—C18—C19 | 175.9 (4) | C8—C9—C16—C18 | 0.2 (5) |
C25—C26—C19—C20 | −175.0 (4) | C10—C9—C16—C18 | −176.9 (4) |
C21—C26—C19—C20 | 1.3 (4) | C8—C9—C16—C17 | 175.1 (4) |
C25—C26—C19—C18 | 12.0 (7) | C10—C9—C16—C17 | −2.0 (7) |
C21—C26—C19—C18 | −171.7 (4) | C21—N3—C20—C19 | 0.0 (5) |
N2—C18—C19—C20 | −133.1 (5) | C26—C19—C20—N3 | −0.9 (5) |
C16—C18—C19—C20 | 43.5 (7) | C18—C19—C20—N3 | 172.2 (4) |
N2—C18—C19—C26 | 38.6 (6) | C24—C23—C22—C21 | 0.5 (7) |
C16—C18—C19—C26 | −144.8 (5) | N3—C21—C22—C23 | −177.4 (4) |
C20—N3—C21—C22 | −178.4 (4) | C26—C21—C22—C23 | 3.4 (6) |
C20—N3—C21—C26 | 0.8 (5) | C1—C6—C5—C4 | 2.6 (8) |
C25—C26—C21—N3 | 175.7 (4) | C7—C6—C5—C4 | −179.9 (5) |
C19—C26—C21—N3 | −1.3 (4) | C5—C6—C1—C2 | −1.4 (7) |
C25—C26—C21—C22 | −5.0 (6) | C7—C6—C1—C2 | −178.9 (5) |
C19—C26—C21—C22 | 178.0 (4) | C6—C5—C4—C3 | −1.3 (10) |
C14—C13—N1—O1 | −173.5 (5) | C6—C1—C2—C3 | −1.0 (9) |
C12—C13—N1—O1 | 8.4 (7) | C5—C4—C3—C2 | −1.1 (12) |
C14—C13—N1—O2 | 6.0 (7) | C1—C2—C3—C4 | 2.3 (11) |
D—H···A | D—H | H···A | D···A | D—H···A |
N3—H3···O4i | 0.86 | 2.02 | 2.842 (5) | 161 |
C4—H4···N4ii | 0.93 | 2.62 | 3.485 (8) | 155 |
C28—H28C···O1iii | 0.96 | 2.48 | 3.245 (9) | 137 |
N2—H2···O4 | 0.86 | 2.03 | 2.876 (4) | 166 |
C28—H28A···O3 | 0.96 | 2.57 | 3.289 (8) | 132 |
Symmetry codes: (i) −x+2, −y+1, −z; (ii) x, y, z+1; (iii) −x+2, −y+2, −z+1. |
D—H···A | D—H | H···A | D···A | D—H···A |
N3—H3···O4i | 0.86 | 2.02 | 2.842 (5) | 160.5 |
C4—H4···N4ii | 0.93 | 2.62 | 3.485 (8) | 155.2 |
C28—H28C···O1iii | 0.96 | 2.48 | 3.245 (9) | 137.1 |
N2—H2···O4 | 0.86 | 2.03 | 2.876 (4) | 166.2 |
C28—H28A···O3 | 0.96 | 2.57 | 3.289 (8) | 131.9 |
Symmetry codes: (i) −x+2, −y+1, −z; (ii) x, y, z+1; (iii) −x+2, −y+2, −z+1. |
Experimental details
Crystal data | |
Chemical formula | C26H15BrN4O3·C2H6OS |
Mr | 589.46 |
Crystal system, space group | Triclinic, P1 |
Temperature (K) | 293 |
a, b, c (Å) | 10.1721 (3), 11.2475 (3), 12.0154 (4) |
α, β, γ (°) | 79.638 (2), 82.454 (2), 82.371 (2) |
V (Å3) | 1332.14 (7) |
Z | 2 |
Radiation type | Mo Kα |
µ (mm−1) | 1.66 |
Crystal size (mm) | 0.21 × 0.19 × 0.18 |
Data collection | |
Diffractometer | Bruker SMART APEXII CCD |
Absorption correction | Multi-scan (SADABS; Bruker, 2008) |
Tmin, Tmax | 0.712, 0.741 |
No. of measured, independent and observed [I > 2σ(I)] reflections | 24122, 4694, 3272 |
Rint | 0.037 |
(sin θ/λ)max (Å−1) | 0.595 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.059, 0.186, 1.04 |
No. of reflections | 4694 |
No. of parameters | 344 |
H-atom treatment | H-atom parameters constrained |
Δρmax, Δρmin (e Å−3) | 0.93, −0.66 |
Computer programs: APEX2 (Bruker, 2008), SAINT (Bruker, 2008), SHELXS97 (Sheldrick, 2008), ORTEP-3 for Windows (Farrugia, 2012), SHELXL97 (Sheldrick, 2008) and PLATON (Spek, 2009).
Acknowledgements
The authors thank Dr Babu Varghese, SAIF, IIT, Chennai, India, for the data collection.
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.
Indole derivatives are known to exhibit activities such as antitumour (Andreani et al., 2001); antiviral (Kolocouris et al., 1994) and anti-hepatitis C virus (Andreev et al., 2015). Indoles have attracted much attention because of their wide variety of applications especially in medicinal field. Indole derivatives are used as bioactive drugs (Stevenson et al., 2000) and they exhibit antiallergic, central nervous system depressant and muscle relaxant properties (Harris & Uhle 1960; Ho et al., 1986). The title compound was synthesize as a part of our ongoing research to synthesize and evaluate the biological activities of structural analogues of 1H-indolylpyrrole derivatives (Kamalraja et al., 2014) and reported herein on their crystal structure.
The title compound contain 5-bromo-3-methyl-1H-indole connected to the 5-benzoyl-4-(4-nitrophenyl)-1H-pyrrole-3-carbonitrile system and a dimethyl sulfoxide solvent molecule (Fig. 1). For a similar structure, see: Vimala et al. (2015)The indole unit (N3/C19-C26) is essentially coplanar [maximum deviation=0.0067Å for N atom]. In the 2-(5-bromo-1H-indole-3-yl)-1H-pyrrole-3-carbonitrile portion, the torsion angles C16-C18-C19-C20 and N2-C18-C19-C26 for the link between the central pyrrole ring and the pendent indole ring system [43.5 (7)° and 38.6 (6)°, respectively] with the dihedral angle 44.1 (2)°. The nitrobenzene and benzene ring are inclined with the central pyrrole ring by 51.3 (2)° and 51.9 (3)°, respectively. Atoms N4 and C17 of the carbonitrile substituent deviate from this plane by 0.197 (2)Å and 0.109 (1)Å respectively are similar to those in 2-amino-4-(2-naphthyl)thiophene-3-carbonitrile [0.194 (2)Å and 0.101 (3)Å, respectively (Çoruh et al., 2005)].
The crystal structure exhibits a C-H···π hydrogen bond in addition to inter and intramolecular N–H···O, C–H···O and C–H···N hydrogen bonding interactions, and the details are given in Table 2. The inter and intramolecular N–H···(O,O) hydrogen-bonding interaction between aromatic H-atom donor and sulfoxide-O-atom acceptors results in an R42(16) ring motif shown in Fig 3. The molecules are further linked into chains running along [001] direction (Fig 2).