Supporting information
Crystallographic Information File (CIF) https://doi.org/10.1107/S1600536810042935/gk2306sup1.cif | |
Structure factor file (CIF format) https://doi.org/10.1107/S1600536810042935/gk2306Isup2.hkl |
CCDC reference: 799749
Key indicators
- Single-crystal X-ray study
- T = 293 K, P = 0.0 kPa
- Mean (C-C) = 0.002 Å
- R factor = 0.053
- wR factor = 0.139
- Data-to-parameter ratio = 21.0
checkCIF/PLATON results
No syntax errors found
Alert level C PLAT910_ALERT_3_C Missing # of FCF Reflections Below Th(Min) ..... 4 PLAT911_ALERT_3_C Missing # FCF Refl Between THmin & STh/L= 0.600 31 PLAT913_ALERT_3_C Missing # of Very Strong Reflections in FCF .... 6 PLAT912_ALERT_4_C Missing # of FCF Reflections Above STh/L= 0.600 38
Alert level G PLAT154_ALERT_1_G The su's on the Cell Angles are Equal (x 10000) 200 Deg. PLAT199_ALERT_1_G Check the Reported _cell_measurement_temperature 293 K PLAT200_ALERT_1_G Check the Reported _diffrn_ambient_temperature 293 K
0 ALERT level A = In general: serious problem 0 ALERT level B = Potentially serious problem 4 ALERT level C = Check and explain 3 ALERT level G = General alerts; check 3 ALERT type 1 CIF construction/syntax error, inconsistent or missing data 0 ALERT type 2 Indicator that the structure model may be wrong or deficient 3 ALERT type 3 Indicator that the structure quality may be low 1 ALERT type 4 Improvement, methodology, query or suggestion 0 ALERT type 5 Informative message, check
The title compound was synthesized using procedure already described in literature (Danel, 1996) from 2-aminobenzophenone and 5-methyl-2-phenyl-2,4-dihydro-pyrazol-3-one (10 mmol of each substrate, ethylene glycol as a solvent). The product was purified by flash chromatography on Al2O3 with chloroform as a solvent, followed by crystallization from toluene/petroleum ether to give 2.38 g (71% yield) of light-yellow crystalline solid, mp. 438–440 K. 1H NMR (CDCl3): δ 2.14 (s, 3H), 7.25–7.30 (m, 1H), 7.36 (ddd, J = 8.6, 6.7, 1.3 Hz, 1H), 7.44–7.47 (m, 2H), 7.52–7.60 (m, 5H). 7.71–7.77 (m, 2H), 8.20 (d, J = 8.4 Hz, 1H), 8.49–8.53 (m, 2H). 13C NMR (CDCl3): δ 14.9, 116.3, 120.3, 123.6, 123.9, 124.9, 127.0, 128.3, 128.7, 129.0 (two signals), 129.7, 130.3, 135.0, 140.0, 143.8, 144.4, 148.5, 150.2. Single crystals suitable for X-ray diffraction were grown by slow evaporation from toluene solution at ambient conditions.
H atoms were included into refinement in geometrically calculated positions, with C—H = 0.93 Å and Uiso(H) = 1.2Ueq for the aromatic CH groups and C—H = 0.96 Å and Uiso(H) = 1.5Ueq for methyl groups. The positions of H atoms were constrained as a part of a riding model. In the case of methyl group the torsion angle along the Caromatic—Cmethyl bond was refined using AFIX 137 procedure (SHELXL-97; Sheldrick, 2008).
The title compound and other 1H-pyrazolo[3,4-b]quinoline (PQ) derivatives containing hydrogen, methyl or phenyl substituents and their combination, showed important photophysical properties (Gondek et al., 2006) which could be utilized in organic light-emitting diodes (OLED) fabrication. To synthesize 1,3,4-substituted PQ derivatives, a method of preparation introduced by Danel (1996) was used. The results of using the title compound in OLED preparation will be published elsewhere.
The shape of the title molecule is shown in Fig. 1. The core of the molecule, 1H-pyrazolo[3,4-b]quinoline, is planar and aromatic. The planes of phenyl substituents at positions 1 and 4 are twisted against the core moiety with the torsion angles N2—N1—C11—C16 = -15.7 (2) and C3a—C4—C41—C46 = 116.7 (2)°. The conformation of the molecule is stabilized by two intramolecular interactions of C—H···N type in which N2 and N9 atoms are acceptors.
The packing of the molecules (Fig. 2) is determined by one weak intermolecular hydrogen bond C46—H46···N9 (-x + 1, -y + 1, -z), and π-π interactions: with Cg1 (N1—N2—C3—C3a—C9a)···Cg3 (C4a—C5—C6—C7—C8—C8a at 1 - x, 1 - y, -z) = 3.731 and Cg2 (C3a—C4—C4a—C8a—N9—C9a)···Cg2 (C3a—C4—C4a—C8a—N9—C9a at 1 - x, 1 - y, -z) = 3.799 Å resulting in forming molecular dimers. The two C—H···π interactions are described by the geometry parameters (H···A /Å, D···A /Å, <DHA /°, respectively) given below:
C6—H6···Cg5 (C41—C42—C43—C44—C45—C46 at 2 - x, 1 - y, -z): 2.967, 3.750, 143;
C31—H31···Cg1 (N1—N2—C3—C3a—C9a at 1 - x, -y, -z): 3.172, 3.875, 132.
For the synthesis of 1,3 and 4-substituted 1H-pyrazolo[3,4-b]quinoline derivatives using Friedländer condensation, see: Danel (1996); Woo et al. (2002). For selected photophysical properties of 1H-pyrazolo[3,4-b]quinoline derivatives, see: Gondek et al. (2006). For related structures, see: Szlachcic & Stadnicka (2010); Szlachcic et al. (2010).
Data collection: COLLECT (Nonius, 1998); cell refinement: SCALEPACK (Otwinowski & Minor, 1997); data reduction: DENZO and SCALEPACK (Otwinowski & Minor, 1997); program(s) used to solve structure: SIR92 (Altomare et al., 1994); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: ORTEP-3 (Farrugia, 1997); software used to prepare material for publication: SHELXL97 (Sheldrick, 2008).
C23H17N3 | Z = 2 |
Mr = 335.40 | F(000) = 352 |
Triclinic, P1 | Dx = 1.283 Mg m−3 |
Hall symbol: -P 1 | Melting point = 438–440 K |
a = 9.2120 (4) Å | Mo Kα radiation, λ = 0.71073 Å |
b = 9.9377 (5) Å | Cell parameters from 2458 reflections |
c = 10.3440 (4) Å | θ = 1.0–30.0° |
α = 92.278 (2)° | µ = 0.08 mm−1 |
β = 113.376 (2)° | T = 293 K |
γ = 90.152 (2)° | Plate, green–yellow |
V = 868.37 (7) Å3 | 0.50 × 0.42 × 0.15 mm |
Nonius KappaCCD diffractometer | 4964 independent reflections |
Radiation source: fine-focus sealed tube | 3285 reflections with I > 2σ(I) |
Horizontally mounted graphite crystal monochromator | Rint = 0.020 |
Detector resolution: 9 pixels mm-1 | θmax = 30.0°, θmin = 2.9° |
φ and ο scans to fill Ewald sphere | h = −12→11 |
Absorption correction: multi-scan (DENZO and SCALEPACK; Otwinowski & Minor, 1997) | k = −13→7 |
Tmin = 0.963, Tmax = 0.989 | l = −14→13 |
6556 measured reflections |
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)] = 0.053 | Hydrogen site location: inferred from neighbouring sites |
wR(F2) = 0.139 | H-atom parameters constrained |
S = 1.02 | w = 1/[σ2(Fo2) + (0.054P)2 + 0.1697P] where P = (Fo2 + 2Fc2)/3 |
4964 reflections | (Δ/σ)max < 0.001 |
236 parameters | Δρmax = 0.24 e Å−3 |
0 restraints | Δρmin = −0.17 e Å−3 |
0 constraints |
C23H17N3 | γ = 90.152 (2)° |
Mr = 335.40 | V = 868.37 (7) Å3 |
Triclinic, P1 | Z = 2 |
a = 9.2120 (4) Å | Mo Kα radiation |
b = 9.9377 (5) Å | µ = 0.08 mm−1 |
c = 10.3440 (4) Å | T = 293 K |
α = 92.278 (2)° | 0.50 × 0.42 × 0.15 mm |
β = 113.376 (2)° |
Nonius KappaCCD diffractometer | 4964 independent reflections |
Absorption correction: multi-scan (DENZO and SCALEPACK; Otwinowski & Minor, 1997) | 3285 reflections with I > 2σ(I) |
Tmin = 0.963, Tmax = 0.989 | Rint = 0.020 |
6556 measured reflections |
R[F2 > 2σ(F2)] = 0.053 | 0 restraints |
wR(F2) = 0.139 | H-atom parameters constrained |
S = 1.02 | Δρmax = 0.24 e Å−3 |
4964 reflections | Δρmin = −0.17 e Å−3 |
236 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. |
x | y | z | Uiso*/Ueq | ||
N1 | 0.34388 (14) | 0.18687 (11) | 0.08010 (12) | 0.0397 (3) | |
N2 | 0.28625 (15) | 0.11194 (12) | −0.04633 (13) | 0.0438 (3) | |
C3 | 0.37588 (17) | 0.13841 (14) | −0.11453 (15) | 0.0416 (3) | |
C3A | 0.49700 (16) | 0.23706 (13) | −0.03567 (14) | 0.0351 (3) | |
C4 | 0.61386 (15) | 0.31001 (13) | −0.05685 (14) | 0.0344 (3) | |
C4A | 0.70159 (15) | 0.40697 (13) | 0.05158 (14) | 0.0345 (3) | |
C5 | 0.82339 (17) | 0.49062 (14) | 0.04416 (15) | 0.0418 (3) | |
H5 | 0.8450 | 0.4851 | −0.0364 | 0.050* | |
C6 | 0.90904 (18) | 0.57853 (16) | 0.15214 (17) | 0.0478 (4) | |
H6 | 0.9870 | 0.6330 | 0.1441 | 0.057* | |
C7 | 0.88014 (19) | 0.58731 (16) | 0.27575 (17) | 0.0514 (4) | |
H7 | 0.9402 | 0.6466 | 0.3497 | 0.062* | |
C8 | 0.76495 (18) | 0.50976 (15) | 0.28780 (16) | 0.0464 (4) | |
H8 | 0.7476 | 0.5163 | 0.3704 | 0.056* | |
C8A | 0.67061 (15) | 0.41895 (13) | 0.17655 (14) | 0.0356 (3) | |
N9 | 0.55506 (13) | 0.34765 (11) | 0.19637 (12) | 0.0381 (3) | |
C9A | 0.47232 (15) | 0.26467 (13) | 0.08992 (14) | 0.0343 (3) | |
C11 | 0.25132 (16) | 0.19574 (13) | 0.16186 (14) | 0.0378 (3) | |
C12 | 0.31890 (19) | 0.24076 (15) | 0.30166 (16) | 0.0487 (4) | |
H12 | 0.4260 | 0.2639 | 0.3436 | 0.058* | |
C13 | 0.2259 (2) | 0.25117 (17) | 0.37876 (19) | 0.0579 (4) | |
H13 | 0.2706 | 0.2831 | 0.4723 | 0.069* | |
C14 | 0.0681 (2) | 0.21477 (17) | 0.3187 (2) | 0.0591 (4) | |
H14 | 0.0064 | 0.2220 | 0.3712 | 0.071* | |
C15 | 0.00234 (19) | 0.16761 (17) | 0.18044 (19) | 0.0553 (4) | |
H15 | −0.1038 | 0.1413 | 0.1401 | 0.066* | |
C16 | 0.09222 (17) | 0.15891 (15) | 0.10080 (17) | 0.0455 (3) | |
H16 | 0.0464 | 0.1285 | 0.0068 | 0.055* | |
C31 | 0.3400 (2) | 0.06994 (18) | −0.25516 (17) | 0.0578 (4) | |
H31A | 0.4209 | 0.0063 | −0.2477 | 0.087* | |
H31B | 0.3365 | 0.1358 | −0.3217 | 0.087* | |
H31C | 0.2395 | 0.0237 | −0.2866 | 0.087* | |
C41 | 0.64981 (16) | 0.28577 (13) | −0.18381 (14) | 0.0357 (3) | |
C42 | 0.70864 (19) | 0.16239 (15) | −0.20626 (16) | 0.0462 (4) | |
H42 | 0.7243 | 0.0953 | −0.1421 | 0.055* | |
C43 | 0.7441 (2) | 0.13829 (17) | −0.32315 (18) | 0.0540 (4) | |
H43 | 0.7836 | 0.0555 | −0.3371 | 0.065* | |
C44 | 0.72084 (19) | 0.23688 (18) | −0.41857 (17) | 0.0524 (4) | |
H44 | 0.7443 | 0.2207 | −0.4973 | 0.063* | |
C45 | 0.66269 (18) | 0.35998 (17) | −0.39743 (16) | 0.0491 (4) | |
H45 | 0.6468 | 0.4265 | −0.4622 | 0.059* | |
C46 | 0.62795 (17) | 0.38491 (14) | −0.28066 (15) | 0.0417 (3) | |
H46 | 0.5898 | 0.4684 | −0.2667 | 0.050* |
U11 | U22 | U33 | U12 | U13 | U23 | |
N1 | 0.0428 (6) | 0.0404 (6) | 0.0370 (6) | −0.0120 (5) | 0.0179 (5) | −0.0042 (5) |
N2 | 0.0489 (7) | 0.0417 (6) | 0.0396 (6) | −0.0131 (5) | 0.0172 (5) | −0.0058 (5) |
C3 | 0.0461 (8) | 0.0386 (7) | 0.0390 (7) | −0.0073 (6) | 0.0164 (6) | −0.0017 (6) |
C3A | 0.0399 (7) | 0.0325 (6) | 0.0335 (6) | −0.0019 (5) | 0.0153 (6) | 0.0008 (5) |
C4 | 0.0363 (7) | 0.0329 (6) | 0.0353 (7) | 0.0014 (5) | 0.0156 (6) | 0.0018 (5) |
C4A | 0.0342 (7) | 0.0335 (6) | 0.0375 (7) | −0.0004 (5) | 0.0162 (6) | −0.0003 (5) |
C5 | 0.0409 (8) | 0.0449 (8) | 0.0444 (8) | −0.0061 (6) | 0.0223 (6) | −0.0029 (6) |
C6 | 0.0417 (8) | 0.0495 (8) | 0.0561 (9) | −0.0134 (6) | 0.0243 (7) | −0.0065 (7) |
C7 | 0.0485 (9) | 0.0547 (9) | 0.0517 (9) | −0.0176 (7) | 0.0225 (7) | −0.0156 (7) |
C8 | 0.0461 (8) | 0.0537 (8) | 0.0429 (8) | −0.0131 (7) | 0.0230 (7) | −0.0122 (7) |
C8A | 0.0351 (7) | 0.0359 (6) | 0.0372 (7) | −0.0031 (5) | 0.0160 (6) | −0.0012 (5) |
N9 | 0.0389 (6) | 0.0401 (6) | 0.0370 (6) | −0.0073 (5) | 0.0173 (5) | −0.0032 (5) |
C9A | 0.0359 (7) | 0.0331 (6) | 0.0352 (6) | −0.0033 (5) | 0.0155 (5) | 0.0018 (5) |
C11 | 0.0420 (7) | 0.0326 (6) | 0.0419 (7) | −0.0047 (5) | 0.0198 (6) | 0.0043 (6) |
C12 | 0.0521 (9) | 0.0529 (9) | 0.0428 (8) | −0.0151 (7) | 0.0210 (7) | −0.0023 (7) |
C13 | 0.0749 (12) | 0.0548 (9) | 0.0531 (10) | −0.0144 (8) | 0.0360 (9) | −0.0073 (8) |
C14 | 0.0658 (11) | 0.0563 (10) | 0.0722 (12) | 0.0003 (8) | 0.0455 (10) | 0.0011 (9) |
C15 | 0.0425 (9) | 0.0590 (10) | 0.0689 (11) | −0.0006 (7) | 0.0265 (8) | 0.0083 (9) |
C16 | 0.0411 (8) | 0.0467 (8) | 0.0467 (8) | −0.0052 (6) | 0.0151 (7) | 0.0040 (7) |
C31 | 0.0659 (11) | 0.0612 (10) | 0.0460 (9) | −0.0213 (8) | 0.0237 (8) | −0.0155 (8) |
C41 | 0.0369 (7) | 0.0365 (7) | 0.0355 (7) | −0.0032 (5) | 0.0167 (6) | −0.0012 (6) |
C42 | 0.0563 (9) | 0.0398 (7) | 0.0454 (8) | 0.0040 (6) | 0.0235 (7) | 0.0007 (6) |
C43 | 0.0632 (10) | 0.0498 (9) | 0.0546 (10) | 0.0061 (8) | 0.0301 (8) | −0.0069 (8) |
C44 | 0.0532 (9) | 0.0675 (10) | 0.0417 (8) | −0.0034 (8) | 0.0256 (7) | −0.0085 (8) |
C45 | 0.0523 (9) | 0.0582 (9) | 0.0403 (8) | −0.0035 (7) | 0.0218 (7) | 0.0067 (7) |
C46 | 0.0453 (8) | 0.0412 (7) | 0.0421 (8) | 0.0010 (6) | 0.0212 (6) | 0.0029 (6) |
N1—C9A | 1.3790 (16) | C12—C13 | 1.385 (2) |
N1—N2 | 1.3842 (16) | C12—H12 | 0.9300 |
N1—C11 | 1.4201 (17) | C13—C14 | 1.376 (3) |
N2—C3 | 1.3132 (18) | C13—H13 | 0.9300 |
C3—C3A | 1.4422 (19) | C14—C15 | 1.374 (3) |
C3—C31 | 1.492 (2) | C14—H14 | 0.9300 |
C3A—C4 | 1.3885 (18) | C15—C16 | 1.381 (2) |
C3A—C9A | 1.4217 (18) | C15—H15 | 0.9300 |
C4—C4A | 1.4249 (18) | C16—H16 | 0.9300 |
C4—C41 | 1.4876 (18) | C31—H31A | 0.9600 |
C4A—C5 | 1.4228 (18) | C31—H31B | 0.9600 |
C4A—C8A | 1.4308 (18) | C31—H31C | 0.9600 |
C5—C6 | 1.361 (2) | C41—C42 | 1.3898 (19) |
C5—H5 | 0.9300 | C41—C46 | 1.3907 (19) |
C6—C7 | 1.405 (2) | C42—C43 | 1.384 (2) |
C6—H6 | 0.9300 | C42—H42 | 0.9300 |
C7—C8 | 1.358 (2) | C43—C44 | 1.375 (2) |
C7—H7 | 0.9300 | C43—H43 | 0.9300 |
C8—C8A | 1.4190 (19) | C44—C45 | 1.381 (2) |
C8—H8 | 0.9300 | C44—H44 | 0.9300 |
C8A—N9 | 1.3631 (16) | C45—C46 | 1.381 (2) |
N9—C9A | 1.3160 (17) | C45—H45 | 0.9300 |
C11—C12 | 1.383 (2) | C46—H46 | 0.9300 |
C11—C16 | 1.3875 (19) | ||
C9A—N1—N2 | 110.06 (11) | C11—C12—H12 | 120.3 |
C9A—N1—C11 | 129.37 (11) | C13—C12—H12 | 120.3 |
N2—N1—C11 | 119.07 (11) | C14—C13—C12 | 120.78 (16) |
C3—N2—N1 | 108.04 (11) | C14—C13—H13 | 119.6 |
N2—C3—C3A | 110.55 (12) | C12—C13—H13 | 119.6 |
N2—C3—C31 | 119.20 (13) | C15—C14—C13 | 119.47 (15) |
C3A—C3—C31 | 130.23 (13) | C15—C14—H14 | 120.3 |
C4—C3A—C9A | 118.45 (12) | C13—C14—H14 | 120.3 |
C4—C3A—C3 | 136.89 (13) | C14—C15—C16 | 120.71 (16) |
C9A—C3A—C3 | 104.51 (11) | C14—C15—H15 | 119.6 |
C3A—C4—C4A | 116.60 (12) | C16—C15—H15 | 119.6 |
C3A—C4—C41 | 122.02 (12) | C15—C16—C11 | 119.61 (15) |
C4A—C4—C41 | 121.36 (11) | C15—C16—H16 | 120.2 |
C5—C4A—C4 | 123.14 (12) | C11—C16—H16 | 120.2 |
C5—C4A—C8A | 117.71 (12) | C3—C31—H31A | 109.5 |
C4—C4A—C8A | 119.12 (11) | C3—C31—H31B | 109.5 |
C6—C5—C4A | 121.57 (13) | H31A—C31—H31B | 109.5 |
C6—C5—H5 | 119.2 | C3—C31—H31C | 109.5 |
C4A—C5—H5 | 119.2 | H31A—C31—H31C | 109.5 |
C5—C6—C7 | 120.27 (13) | H31B—C31—H31C | 109.5 |
C5—C6—H6 | 119.9 | C42—C41—C46 | 118.74 (12) |
C7—C6—H6 | 119.9 | C42—C41—C4 | 119.81 (12) |
C8—C7—C6 | 120.36 (14) | C46—C41—C4 | 121.45 (12) |
C8—C7—H7 | 119.8 | C43—C42—C41 | 120.68 (14) |
C6—C7—H7 | 119.8 | C43—C42—H42 | 119.7 |
C7—C8—C8A | 121.18 (14) | C41—C42—H42 | 119.7 |
C7—C8—H8 | 119.4 | C44—C43—C42 | 119.96 (14) |
C8A—C8—H8 | 119.4 | C44—C43—H43 | 120.0 |
N9—C8A—C8 | 117.20 (12) | C42—C43—H43 | 120.0 |
N9—C8A—C4A | 123.94 (12) | C43—C44—C45 | 119.95 (14) |
C8—C8A—C4A | 118.86 (12) | C43—C44—H44 | 120.0 |
C9A—N9—C8A | 114.32 (11) | C45—C44—H44 | 120.0 |
N9—C9A—N1 | 125.83 (12) | C46—C45—C44 | 120.36 (14) |
N9—C9A—C3A | 127.35 (12) | C46—C45—H45 | 119.8 |
N1—C9A—C3A | 106.81 (11) | C44—C45—H45 | 119.8 |
C12—C11—C16 | 119.95 (13) | C45—C46—C41 | 120.30 (13) |
C12—C11—N1 | 120.37 (13) | C45—C46—H46 | 119.9 |
C16—C11—N1 | 119.67 (13) | C41—C46—H46 | 119.9 |
C11—C12—C13 | 119.46 (15) | ||
C9A—N1—N2—C3 | 1.12 (16) | C11—N1—C9A—N9 | 14.3 (2) |
C11—N1—N2—C3 | 168.47 (12) | N2—N1—C9A—C3A | −0.24 (15) |
N1—N2—C3—C3A | −1.54 (16) | C11—N1—C9A—C3A | −165.91 (13) |
N1—N2—C3—C31 | 179.75 (13) | C4—C3A—C9A—N9 | −4.6 (2) |
N2—C3—C3A—C4 | −173.86 (15) | C3—C3A—C9A—N9 | 179.13 (13) |
C31—C3—C3A—C4 | 4.7 (3) | C4—C3A—C9A—N1 | 175.65 (12) |
N2—C3—C3A—C9A | 1.37 (16) | C3—C3A—C9A—N1 | −0.64 (14) |
C31—C3—C3A—C9A | 179.90 (16) | C9A—N1—C11—C12 | −31.2 (2) |
C9A—C3A—C4—C4A | 0.62 (18) | N2—N1—C11—C12 | 164.26 (12) |
C3—C3A—C4—C4A | 175.37 (15) | C9A—N1—C11—C16 | 148.85 (14) |
C9A—C3A—C4—C41 | 178.75 (12) | N2—N1—C11—C16 | −15.73 (19) |
C3—C3A—C4—C41 | −6.5 (2) | C16—C11—C12—C13 | −1.3 (2) |
C3A—C4—C4A—C5 | −179.09 (13) | N1—C11—C12—C13 | 178.74 (13) |
C41—C4—C4A—C5 | 2.8 (2) | C11—C12—C13—C14 | 1.3 (3) |
C3A—C4—C4A—C8A | 3.01 (18) | C12—C13—C14—C15 | 0.0 (3) |
C41—C4—C4A—C8A | −175.13 (12) | C13—C14—C15—C16 | −1.3 (3) |
C4—C4A—C5—C6 | −177.40 (14) | C14—C15—C16—C11 | 1.3 (2) |
C8A—C4A—C5—C6 | 0.5 (2) | C12—C11—C16—C15 | 0.0 (2) |
C4A—C5—C6—C7 | 0.9 (2) | N1—C11—C16—C15 | −179.99 (13) |
C5—C6—C7—C8 | −1.0 (3) | C3A—C4—C41—C42 | −64.18 (18) |
C6—C7—C8—C8A | −0.4 (3) | C4A—C4—C41—C42 | 113.86 (15) |
C7—C8—C8A—N9 | −178.35 (14) | C3A—C4—C41—C46 | 116.72 (15) |
C7—C8—C8A—C4A | 1.8 (2) | C4A—C4—C41—C46 | −65.24 (18) |
C5—C4A—C8A—N9 | 178.31 (13) | C46—C41—C42—C43 | −0.3 (2) |
C4—C4A—C8A—N9 | −3.7 (2) | C4—C41—C42—C43 | −179.45 (14) |
C5—C4A—C8A—C8 | −1.87 (19) | C41—C42—C43—C44 | −0.1 (2) |
C4—C4A—C8A—C8 | 176.15 (13) | C42—C43—C44—C45 | 0.2 (3) |
C8—C8A—N9—C9A | −179.62 (13) | C43—C44—C45—C46 | 0.1 (2) |
C4A—C8A—N9—C9A | 0.20 (19) | C44—C45—C46—C41 | −0.6 (2) |
C8A—N9—C9A—N1 | −176.24 (12) | C42—C41—C46—C45 | 0.7 (2) |
C8A—N9—C9A—C3A | 4.0 (2) | C4—C41—C46—C45 | 179.80 (13) |
N2—N1—C9A—N9 | 179.99 (13) |
D—H···A | D—H | H···A | D···A | D—H···A |
C12—H12···N9 | 0.93 | 2.44 | 3.0012 (18) | 119 |
C46—H46···N9i | 0.93 | 2.52 | 3.4164 (18) | 163 |
C16—H16···N2 | 0.93 | 2.48 | 2.799 (2) | 100 |
Symmetry code: (i) −x+1, −y+1, −z. |
Experimental details
Crystal data | |
Chemical formula | C23H17N3 |
Mr | 335.40 |
Crystal system, space group | Triclinic, P1 |
Temperature (K) | 293 |
a, b, c (Å) | 9.2120 (4), 9.9377 (5), 10.3440 (4) |
α, β, γ (°) | 92.278 (2), 113.376 (2), 90.152 (2) |
V (Å3) | 868.37 (7) |
Z | 2 |
Radiation type | Mo Kα |
µ (mm−1) | 0.08 |
Crystal size (mm) | 0.50 × 0.42 × 0.15 |
Data collection | |
Diffractometer | Nonius KappaCCD |
Absorption correction | Multi-scan (DENZO and SCALEPACK; Otwinowski & Minor, 1997) |
Tmin, Tmax | 0.963, 0.989 |
No. of measured, independent and observed [I > 2σ(I)] reflections | 6556, 4964, 3285 |
Rint | 0.020 |
(sin θ/λ)max (Å−1) | 0.703 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.053, 0.139, 1.02 |
No. of reflections | 4964 |
No. of parameters | 236 |
H-atom treatment | H-atom parameters constrained |
Δρmax, Δρmin (e Å−3) | 0.24, −0.17 |
Computer programs: COLLECT (Nonius, 1998), DENZO and SCALEPACK (Otwinowski & Minor, 1997), SIR92 (Altomare et al., 1994), SHELXL97 (Sheldrick, 2008), ORTEP-3 (Farrugia, 1997).
D—H···A | D—H | H···A | D···A | D—H···A |
C46—H46···N9i | 0.93 | 2.52 | 3.4164 (18) | 163 |
Symmetry code: (i) −x+1, −y+1, −z. |
The title compound and other 1H-pyrazolo[3,4-b]quinoline (PQ) derivatives containing hydrogen, methyl or phenyl substituents and their combination, showed important photophysical properties (Gondek et al., 2006) which could be utilized in organic light-emitting diodes (OLED) fabrication. To synthesize 1,3,4-substituted PQ derivatives, a method of preparation introduced by Danel (1996) was used. The results of using the title compound in OLED preparation will be published elsewhere.
The shape of the title molecule is shown in Fig. 1. The core of the molecule, 1H-pyrazolo[3,4-b]quinoline, is planar and aromatic. The planes of phenyl substituents at positions 1 and 4 are twisted against the core moiety with the torsion angles N2—N1—C11—C16 = -15.7 (2) and C3a—C4—C41—C46 = 116.7 (2)°. The conformation of the molecule is stabilized by two intramolecular interactions of C—H···N type in which N2 and N9 atoms are acceptors.
The packing of the molecules (Fig. 2) is determined by one weak intermolecular hydrogen bond C46—H46···N9 (-x + 1, -y + 1, -z), and π-π interactions: with Cg1 (N1—N2—C3—C3a—C9a)···Cg3 (C4a—C5—C6—C7—C8—C8a at 1 - x, 1 - y, -z) = 3.731 and Cg2 (C3a—C4—C4a—C8a—N9—C9a)···Cg2 (C3a—C4—C4a—C8a—N9—C9a at 1 - x, 1 - y, -z) = 3.799 Å resulting in forming molecular dimers. The two C—H···π interactions are described by the geometry parameters (H···A /Å, D···A /Å, <DHA /°, respectively) given below:
C6—H6···Cg5 (C41—C42—C43—C44—C45—C46 at 2 - x, 1 - y, -z): 2.967, 3.750, 143;
C31—H31···Cg1 (N1—N2—C3—C3a—C9a at 1 - x, -y, -z): 3.172, 3.875, 132.