organic compounds
6′-Amino-3′-methyl-11H,2′H-spiro[indeno[1,2-b]quinoxaline-11,4′-pyrano[2,3-c]pyrazole]-5′-carbonitrile ethanol monosolvate
aDepartment of Chemistry, Jinan University, Guangzhou 510632, People's Republic of China
*Correspondence e-mail: tlyq@jnu.edu.cn
In the title spiroindenoquinoxaline compound, C22H14N6O·C2H6O, the five-membered ring of the indene unit and the pyran ring are perpendicular [89.11 (3)°]. In the crystal, N—H⋯N hydrogen bonds connect the spiroindenoquinoxaline molecules, and the ethanol solvent molecules complete the hydrogen-bond network via O—H⋯N and N—H⋯O interactions.
Related literature
For general background to et al. (2006); Saeedi et al. (2010); Dandia et al. (2011); He et al. (2003).
and their biological activity, see: PradhanExperimental
Crystal data
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Refinement
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Data collection: CrysAlis PRO (Agilent, 2011); cell CrysAlis PRO; data reduction: CrysAlis PRO; program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: OLEX2 (Dolomanov et al., 2009); software used to prepare material for publication: OLEX2.
Supporting information
https://doi.org/10.1107/S1600536812026992/kp2405sup1.cif
contains datablocks I, global. DOI:Structure factors: contains datablock I. DOI: https://doi.org/10.1107/S1600536812026992/kp2405Isup2.hkl
The title compound was prepared by the reaction of 11H- indeno[1,2-b]quinoxalin-11-one(0.232 g, 1 mmol), 3-methyl-2-pyrazolin- 5-one (0.098 g, 1 mmol) with malononitrile (0.066 g, 1 mmol) in the presence of triethylamine (2 mmol) in ethanol (10.0 ml) under reflux for 1 h. Upon completion (monitored by TLC), the mixture was put into the fridge overnight. Then the reaction mixture was filtered to collect the solid. The crude product was recrystallized from ethanol and then dried to give pure compound (I) in 97% yield (m.p. 532–534 K). Single crystals suitable for X-ray diffraction were obtained by slow evaporation of an ethanol solution of (I) at room temperature.
H atom bound to N was located from a difference Fourier map and refined as riding, with N—H = 0.86 Å, and Uiso(H) = 1.2 Ueq(N), and O(2)—H(2) = 0.82 Å, and Uiso(H) = 1.5 Ueq(O). The remaining H atoms were located in a difference syntheses and refined with C—H = 0.93–0.97 Å and with Uiso(H) = 1.2 Ueq(C).
Spiro compounds have received considerable interest due to their highly pronounced biological properties (Pradhan et al., 2006); Thus more and more novel spiroheterocycle compounds have been prepared and characterized (Saeedi et al., 2010); Dandia et al., 2011). In addition, quinoxaline derivatives also showed various biological activities (He et al., 2003). Herein, we report the
of the title compound which is a novel spiroheterocycle containing quinoxaline ring.The title compound is a formed from the reaciton of 11H-indeno [1,2-b]quinoxalin-11-one, 3-methyl-2-pyrazolin-5-one and malononitrile. The molecular structure is shown in Fig. 1.
The five member ring (C4, C7, C8, C16, C15) and pyran ring (C4, C5, C6, O1, C1, C2) are perpendicular and the dihedral angle is 89.11 (3)°. N—H···N hydrogen bonding interaction connnects molecules. In addition, solvent molecule (ethanol) is hydrogen bonded by O—H···N and N—H···O (Table 1).
For general background to
and their biological activity, see: Pradhan et al. (2006); Saeedi et al. (2010); Dandia et al. (2011); He et al. (2003).Data collection: CrysAlis PRO (Agilent, 2011); cell
CrysAlis PRO (Agilent, 2011); data reduction: CrysAlis PRO (Agilent, 2011); program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: OLEX2 (Dolomanov et al., 2009); software used to prepare material for publication: OLEX2 (Dolomanov et al., 2009).Fig. 1. The molecular structure of the title compound in (I) showing the atom numbering scheme. Displacement ellipsoids are drawn at the 50% probability level. |
C22H14N6O·C2H6O | F(000) = 888 |
Mr = 424.46 | Dx = 1.348 Mg m−3 |
Monoclinic, P21/n | Mo Kα radiation, λ = 0.7107 Å |
a = 14.5060 (6) Å | Cell parameters from 2373 reflections |
b = 11.1732 (3) Å | θ = 3.2–29.2° |
c = 14.7365 (6) Å | µ = 0.09 mm−1 |
β = 118.859 (5)° | T = 293 K |
V = 2091.84 (13) Å3 | Block, colorless |
Z = 4 | 0.33 × 0.30 × 0.25 mm |
Agilent Xcalibur Sapphire3 Gemini ultra diffractometer | 4504 independent reflections |
Radiation source: Enhance (Mo) X-ray Source | 3259 reflections with I > 2σ(I) |
Graphite monochromator | Rint = 0.021 |
Detector resolution: 16.0288 pixels mm-1 | θmax = 27.0°, θmin = 3.2° |
ω scans | h = −13→18 |
Absorption correction: multi-scan (CrysAlis PRO; Agilent, 2011) | k = −14→12 |
Tmin = 0.994, Tmax = 1.000 | l = −18→18 |
8822 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)] = 0.047 | Hydrogen site location: inferred from neighbouring sites |
wR(F2) = 0.121 | H-atom parameters constrained |
S = 1.02 | w = 1/[σ2(Fo2) + (0.0506P)2 + 0.6387P] where P = (Fo2 + 2Fc2)/3 |
4504 reflections | (Δ/σ)max < 0.001 |
292 parameters | Δρmax = 0.23 e Å−3 |
0 restraints | Δρmin = −0.22 e Å−3 |
C22H14N6O·C2H6O | V = 2091.84 (13) Å3 |
Mr = 424.46 | Z = 4 |
Monoclinic, P21/n | Mo Kα radiation |
a = 14.5060 (6) Å | µ = 0.09 mm−1 |
b = 11.1732 (3) Å | T = 293 K |
c = 14.7365 (6) Å | 0.33 × 0.30 × 0.25 mm |
β = 118.859 (5)° |
Agilent Xcalibur Sapphire3 Gemini ultra diffractometer | 4504 independent reflections |
Absorption correction: multi-scan (CrysAlis PRO; Agilent, 2011) | 3259 reflections with I > 2σ(I) |
Tmin = 0.994, Tmax = 1.000 | Rint = 0.021 |
8822 measured reflections |
R[F2 > 2σ(F2)] = 0.047 | 0 restraints |
wR(F2) = 0.121 | H-atom parameters constrained |
S = 1.02 | Δρmax = 0.23 e Å−3 |
4504 reflections | Δρmin = −0.22 e Å−3 |
292 parameters |
Experimental. Absorption correction: CrysAlisPro, Agilent Technologies, Version 1.171.35.15 (release 03-08-2011 CrysAlis171 .NET) (compiled Aug 3 2011,13:03:54) Empirical absorption correction using spherical harmonics, implemented in SCALE3 ABSPACK scaling algorithm. |
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. |
x | y | z | Uiso*/Ueq | ||
C1 | 0.49786 (13) | 1.04411 (15) | 0.17993 (14) | 0.0288 (4) | |
C2 | 0.46067 (12) | 0.94042 (15) | 0.20303 (13) | 0.0267 (4) | |
C3 | 0.51266 (13) | 0.93684 (15) | 0.30993 (13) | 0.0308 (4) | |
C4 | 0.38386 (12) | 0.85793 (14) | 0.12114 (12) | 0.0258 (4) | |
C5 | 0.34580 (13) | 0.92258 (15) | 0.01750 (13) | 0.0283 (4) | |
C6 | 0.38757 (13) | 1.02560 (15) | 0.00320 (13) | 0.0292 (4) | |
C7 | 0.43275 (12) | 0.73529 (14) | 0.12372 (12) | 0.0252 (4) | |
C8 | 0.37430 (13) | 0.64242 (15) | 0.13949 (13) | 0.0284 (4) | |
C9 | 0.49107 (13) | 0.50506 (15) | 0.14294 (13) | 0.0306 (4) | |
C10 | 0.54857 (13) | 0.59738 (15) | 0.12637 (13) | 0.0284 (4) | |
C11 | 0.64192 (15) | 0.56720 (17) | 0.12427 (15) | 0.0381 (4) | |
H11 | 0.6802 | 0.6264 | 0.1128 | 0.046* | |
C12 | 0.67633 (15) | 0.45132 (17) | 0.13902 (16) | 0.0419 (5) | |
H12 | 0.7380 | 0.4324 | 0.1375 | 0.050* | |
C13 | 0.61982 (16) | 0.36059 (17) | 0.15637 (16) | 0.0426 (5) | |
H13 | 0.6446 | 0.2823 | 0.1670 | 0.051* | |
C14 | 0.52858 (15) | 0.38691 (16) | 0.15764 (16) | 0.0407 (5) | |
H14 | 0.4910 | 0.3262 | 0.1683 | 0.049* | |
C15 | 0.29206 (12) | 0.82089 (15) | 0.13901 (12) | 0.0279 (4) | |
C16 | 0.28671 (13) | 0.69658 (15) | 0.14753 (13) | 0.0294 (4) | |
C17 | 0.20911 (14) | 0.64534 (17) | 0.16477 (14) | 0.0369 (4) | |
H17 | 0.2051 | 0.5628 | 0.1699 | 0.044* | |
C18 | 0.13808 (14) | 0.71996 (19) | 0.17413 (15) | 0.0420 (5) | |
H18 | 0.0859 | 0.6872 | 0.1860 | 0.050* | |
C19 | 0.14381 (15) | 0.84317 (19) | 0.16597 (15) | 0.0417 (5) | |
H19 | 0.0956 | 0.8920 | 0.1728 | 0.050* | |
C20 | 0.22051 (14) | 0.89454 (17) | 0.14780 (14) | 0.0353 (4) | |
H20 | 0.2236 | 0.9771 | 0.1417 | 0.042* | |
C21 | 0.50729 (17) | 0.85130 (19) | 0.38457 (15) | 0.0466 (5) | |
H21A | 0.5549 | 0.8764 | 0.4541 | 0.070* | |
H21B | 0.5266 | 0.7728 | 0.3731 | 0.070* | |
H21C | 0.4369 | 0.8495 | 0.3747 | 0.070* | |
C22 | 0.26033 (15) | 0.87000 (17) | −0.07019 (15) | 0.0373 (4) | |
C23 | 0.23737 (17) | 0.25182 (19) | 0.04394 (19) | 0.0577 (6) | |
H23A | 0.2604 | 0.2213 | 0.1132 | 0.069* | |
H23B | 0.2944 | 0.2405 | 0.0281 | 0.069* | |
C24 | 0.14610 (19) | 0.1839 (2) | −0.0296 (2) | 0.0707 (8) | |
H24A | 0.0898 | 0.1937 | −0.0135 | 0.106* | |
H24B | 0.1643 | 0.1007 | −0.0252 | 0.106* | |
H24C | 0.1240 | 0.2125 | −0.0985 | 0.106* | |
N4 | 0.19017 (16) | 0.82567 (19) | −0.13887 (14) | 0.0647 (6) | |
N3 | 0.35675 (12) | 1.08220 (14) | −0.08708 (12) | 0.0400 (4) | |
H2A | 0.3060 | 1.0537 | −0.1432 | 0.048* | |
H2B | 0.3877 | 1.1471 | −0.0889 | 0.048* | |
N5 | 0.51689 (10) | 0.71530 (12) | 0.11524 (11) | 0.0282 (3) | |
N6 | 0.39997 (11) | 0.52895 (12) | 0.14725 (12) | 0.0329 (3) | |
N1 | 0.56749 (11) | 1.10402 (13) | 0.26111 (12) | 0.0364 (4) | |
N2 | 0.57499 (11) | 1.03496 (13) | 0.34080 (12) | 0.0366 (4) | |
H2 | 0.6157 | 1.0523 | 0.4049 | 0.044* | |
O1 | 0.46733 (9) | 1.08757 (10) | 0.08218 (10) | 0.0345 (3) | |
O2 | 0.21583 (11) | 0.37477 (12) | 0.04178 (12) | 0.0505 (4) | |
H2C | 0.2702 | 0.4107 | 0.0801 | 0.076* |
U11 | U22 | U33 | U12 | U13 | U23 | |
C1 | 0.0296 (8) | 0.0220 (8) | 0.0361 (9) | 0.0013 (7) | 0.0169 (7) | 0.0006 (8) |
C2 | 0.0269 (8) | 0.0229 (8) | 0.0309 (9) | −0.0005 (7) | 0.0144 (7) | −0.0010 (7) |
C3 | 0.0301 (8) | 0.0280 (9) | 0.0328 (9) | 0.0008 (7) | 0.0140 (7) | −0.0021 (8) |
C4 | 0.0288 (8) | 0.0219 (8) | 0.0276 (8) | −0.0022 (7) | 0.0144 (7) | 0.0013 (7) |
C5 | 0.0310 (8) | 0.0247 (9) | 0.0289 (9) | 0.0000 (7) | 0.0142 (7) | 0.0022 (7) |
C6 | 0.0317 (8) | 0.0251 (9) | 0.0342 (9) | 0.0040 (7) | 0.0186 (8) | 0.0034 (8) |
C7 | 0.0284 (8) | 0.0227 (8) | 0.0217 (8) | −0.0037 (7) | 0.0099 (6) | 0.0002 (7) |
C8 | 0.0319 (8) | 0.0241 (9) | 0.0281 (9) | −0.0039 (7) | 0.0137 (7) | 0.0020 (7) |
C9 | 0.0345 (9) | 0.0253 (9) | 0.0304 (9) | −0.0017 (7) | 0.0144 (7) | 0.0010 (8) |
C10 | 0.0329 (9) | 0.0252 (9) | 0.0257 (8) | −0.0002 (7) | 0.0130 (7) | 0.0014 (7) |
C11 | 0.0407 (10) | 0.0347 (10) | 0.0444 (11) | −0.0007 (8) | 0.0250 (9) | 0.0022 (9) |
C12 | 0.0408 (10) | 0.0381 (11) | 0.0506 (12) | 0.0051 (9) | 0.0251 (9) | −0.0002 (10) |
C13 | 0.0496 (11) | 0.0282 (10) | 0.0486 (12) | 0.0086 (9) | 0.0226 (10) | 0.0032 (9) |
C14 | 0.0453 (11) | 0.0258 (9) | 0.0511 (12) | −0.0014 (8) | 0.0233 (10) | 0.0036 (9) |
C15 | 0.0288 (8) | 0.0291 (9) | 0.0238 (8) | −0.0044 (7) | 0.0111 (7) | −0.0004 (7) |
C16 | 0.0314 (8) | 0.0282 (9) | 0.0279 (9) | −0.0047 (7) | 0.0136 (7) | 0.0017 (8) |
C17 | 0.0372 (10) | 0.0372 (10) | 0.0380 (10) | −0.0079 (8) | 0.0194 (8) | 0.0023 (9) |
C18 | 0.0360 (10) | 0.0516 (12) | 0.0444 (11) | −0.0086 (9) | 0.0241 (9) | −0.0007 (10) |
C19 | 0.0363 (10) | 0.0488 (12) | 0.0458 (11) | 0.0013 (9) | 0.0244 (9) | −0.0040 (10) |
C20 | 0.0373 (10) | 0.0315 (10) | 0.0381 (10) | −0.0010 (8) | 0.0189 (8) | −0.0017 (8) |
C21 | 0.0502 (12) | 0.0511 (13) | 0.0346 (10) | −0.0036 (10) | 0.0173 (9) | 0.0055 (10) |
C22 | 0.0422 (10) | 0.0358 (10) | 0.0322 (10) | −0.0041 (9) | 0.0165 (8) | 0.0074 (9) |
C23 | 0.0507 (13) | 0.0424 (13) | 0.0596 (14) | 0.0070 (10) | 0.0105 (11) | 0.0025 (11) |
C24 | 0.0598 (14) | 0.0394 (13) | 0.0858 (19) | 0.0004 (11) | 0.0136 (13) | −0.0012 (13) |
N4 | 0.0644 (12) | 0.0708 (14) | 0.0390 (10) | −0.0235 (11) | 0.0091 (9) | 0.0001 (10) |
N3 | 0.0466 (9) | 0.0348 (9) | 0.0392 (9) | −0.0034 (7) | 0.0211 (8) | 0.0106 (8) |
N5 | 0.0321 (7) | 0.0245 (7) | 0.0282 (7) | −0.0022 (6) | 0.0147 (6) | 0.0014 (6) |
N6 | 0.0364 (8) | 0.0239 (8) | 0.0394 (9) | −0.0036 (6) | 0.0190 (7) | 0.0028 (7) |
N1 | 0.0347 (8) | 0.0282 (8) | 0.0432 (9) | −0.0042 (7) | 0.0163 (7) | −0.0042 (7) |
N2 | 0.0335 (8) | 0.0345 (9) | 0.0347 (8) | −0.0033 (7) | 0.0108 (7) | −0.0064 (7) |
O1 | 0.0386 (7) | 0.0250 (6) | 0.0405 (7) | −0.0053 (5) | 0.0196 (6) | 0.0037 (6) |
O2 | 0.0425 (8) | 0.0366 (8) | 0.0520 (9) | −0.0002 (6) | 0.0065 (7) | −0.0011 (7) |
C1—C2 | 1.388 (2) | C13—C14 | 1.365 (3) |
C1—N1 | 1.316 (2) | C14—H14 | 0.9300 |
C1—O1 | 1.375 (2) | C15—C16 | 1.400 (2) |
C2—C3 | 1.380 (2) | C15—C20 | 1.379 (2) |
C2—C4 | 1.500 (2) | C16—C17 | 1.391 (2) |
C3—C21 | 1.487 (3) | C17—H17 | 0.9300 |
C3—N2 | 1.352 (2) | C17—C18 | 1.383 (3) |
C4—C5 | 1.531 (2) | C18—H18 | 0.9300 |
C4—C7 | 1.535 (2) | C18—C19 | 1.388 (3) |
C4—C15 | 1.534 (2) | C19—H19 | 0.9300 |
C5—C6 | 1.364 (2) | C19—C20 | 1.388 (3) |
C5—C22 | 1.416 (2) | C20—H20 | 0.9300 |
C6—N3 | 1.340 (2) | C21—H21A | 0.9600 |
C6—O1 | 1.368 (2) | C21—H21B | 0.9600 |
C7—C8 | 1.428 (2) | C21—H21C | 0.9600 |
C7—N5 | 1.305 (2) | C22—N4 | 1.145 (2) |
C8—C16 | 1.463 (2) | C23—H23A | 0.9700 |
C8—N6 | 1.311 (2) | C23—H23B | 0.9700 |
C9—C10 | 1.420 (2) | C23—C24 | 1.455 (3) |
C9—C14 | 1.404 (2) | C23—O2 | 1.406 (2) |
C9—N6 | 1.379 (2) | C24—H24A | 0.9600 |
C10—C11 | 1.410 (2) | C24—H24B | 0.9600 |
C10—N5 | 1.379 (2) | C24—H24C | 0.9600 |
C11—H11 | 0.9300 | N3—H2A | 0.8600 |
C11—C12 | 1.367 (3) | N3—H2B | 0.8600 |
C12—H12 | 0.9300 | N1—N2 | 1.365 (2) |
C12—C13 | 1.403 (3) | N2—H2 | 0.8600 |
C13—H13 | 0.9300 | O2—H2C | 0.8200 |
N1—C1—C2 | 114.84 (16) | C20—C15—C16 | 120.46 (16) |
N1—C1—O1 | 119.36 (15) | C15—C16—C8 | 108.37 (14) |
O1—C1—C2 | 125.79 (15) | C17—C16—C8 | 130.96 (16) |
C1—C2—C4 | 122.78 (15) | C17—C16—C15 | 120.62 (16) |
C3—C2—C1 | 103.96 (15) | C16—C17—H17 | 120.7 |
C3—C2—C4 | 133.23 (15) | C18—C17—C16 | 118.53 (18) |
C2—C3—C21 | 131.90 (17) | C18—C17—H17 | 120.7 |
N2—C3—C2 | 105.59 (15) | C17—C18—H18 | 119.7 |
N2—C3—C21 | 122.50 (16) | C17—C18—C19 | 120.70 (17) |
C2—C4—C5 | 106.43 (13) | C19—C18—H18 | 119.7 |
C2—C4—C7 | 111.95 (13) | C18—C19—H19 | 119.5 |
C2—C4—C15 | 113.39 (13) | C18—C19—C20 | 120.93 (18) |
C5—C4—C7 | 112.69 (13) | C20—C19—H19 | 119.5 |
C5—C4—C15 | 111.93 (13) | C15—C20—C19 | 118.76 (17) |
C15—C4—C7 | 100.60 (12) | C15—C20—H20 | 120.6 |
C6—C5—C4 | 125.38 (15) | C19—C20—H20 | 120.6 |
C6—C5—C22 | 117.88 (15) | C3—C21—H21A | 109.5 |
C22—C5—C4 | 116.73 (14) | C3—C21—H21B | 109.5 |
C5—C6—O1 | 123.50 (15) | C3—C21—H21C | 109.5 |
N3—C6—C5 | 126.27 (16) | H21A—C21—H21B | 109.5 |
N3—C6—O1 | 110.22 (14) | H21A—C21—H21C | 109.5 |
C8—C7—C4 | 110.44 (14) | H21B—C21—H21C | 109.5 |
N5—C7—C4 | 126.36 (14) | N4—C22—C5 | 177.6 (2) |
N5—C7—C8 | 123.18 (15) | H23A—C23—H23B | 107.9 |
C7—C8—C16 | 108.64 (14) | C24—C23—H23A | 109.1 |
N6—C8—C7 | 123.45 (15) | C24—C23—H23B | 109.1 |
N6—C8—C16 | 127.90 (15) | O2—C23—H23A | 109.1 |
C14—C9—C10 | 119.56 (16) | O2—C23—H23B | 109.1 |
N6—C9—C10 | 121.52 (15) | O2—C23—C24 | 112.35 (18) |
N6—C9—C14 | 118.91 (15) | C23—C24—H24A | 109.5 |
C11—C10—C9 | 118.69 (16) | C23—C24—H24B | 109.5 |
N5—C10—C9 | 121.65 (15) | C23—C24—H24C | 109.5 |
N5—C10—C11 | 119.63 (15) | H24A—C24—H24B | 109.5 |
C10—C11—H11 | 119.9 | H24A—C24—H24C | 109.5 |
C12—C11—C10 | 120.26 (17) | H24B—C24—H24C | 109.5 |
C12—C11—H11 | 119.9 | C6—N3—H2A | 120.0 |
C11—C12—H12 | 119.6 | C6—N3—H2B | 120.0 |
C11—C12—C13 | 120.85 (18) | H2A—N3—H2B | 120.0 |
C13—C12—H12 | 119.6 | C7—N5—C10 | 115.20 (14) |
C12—C13—H13 | 119.9 | C8—N6—C9 | 114.91 (14) |
C14—C13—C12 | 120.18 (17) | C1—N1—N2 | 101.65 (14) |
C14—C13—H13 | 119.9 | C3—N2—N1 | 113.96 (14) |
C9—C14—H14 | 119.8 | C3—N2—H2 | 123.0 |
C13—C14—C9 | 120.44 (17) | N1—N2—H2 | 123.0 |
C13—C14—H14 | 119.8 | C6—O1—C1 | 115.14 (13) |
C16—C15—C4 | 111.92 (14) | C23—O2—H2C | 109.5 |
C20—C15—C4 | 127.62 (15) | ||
C1—C2—C3—C21 | 178.33 (19) | C8—C16—C17—C18 | 176.67 (17) |
C1—C2—C3—N2 | −0.36 (18) | C9—C10—C11—C12 | −0.6 (3) |
C1—C2—C4—C5 | −9.4 (2) | C9—C10—N5—C7 | 1.7 (2) |
C1—C2—C4—C7 | 114.17 (17) | C10—C9—C14—C13 | 0.2 (3) |
C1—C2—C4—C15 | −132.85 (16) | C10—C9—N6—C8 | −2.8 (2) |
C1—N1—N2—C3 | 0.01 (19) | C10—C11—C12—C13 | 0.0 (3) |
C2—C1—N1—N2 | −0.26 (19) | C11—C10—N5—C7 | −176.50 (16) |
C2—C1—O1—C6 | 5.1 (2) | C11—C12—C13—C14 | 0.7 (3) |
C2—C3—N2—N1 | 0.24 (19) | C12—C13—C14—C9 | −0.8 (3) |
C2—C4—C5—C6 | 9.6 (2) | C14—C9—C10—C11 | 0.5 (3) |
C2—C4—C5—C22 | −170.60 (15) | C14—C9—C10—N5 | −177.66 (16) |
C2—C4—C7—C8 | 121.49 (15) | C14—C9—N6—C8 | 175.74 (17) |
C2—C4—C7—N5 | −57.1 (2) | C15—C4—C5—C6 | 134.00 (17) |
C2—C4—C15—C16 | −121.20 (16) | C15—C4—C5—C22 | −46.2 (2) |
C2—C4—C15—C20 | 58.1 (2) | C15—C4—C7—C8 | 0.76 (16) |
C3—C2—C4—C5 | 172.97 (17) | C15—C4—C7—N5 | −177.86 (15) |
C3—C2—C4—C7 | −63.5 (2) | C15—C16—C17—C18 | −0.5 (3) |
C3—C2—C4—C15 | 49.5 (2) | C16—C8—N6—C9 | −175.98 (16) |
C4—C2—C3—C21 | −3.7 (3) | C16—C15—C20—C19 | 0.5 (3) |
C4—C2—C3—N2 | 177.61 (17) | C16—C17—C18—C19 | 0.3 (3) |
C4—C5—C6—N3 | 178.60 (16) | C17—C18—C19—C20 | 0.3 (3) |
C4—C5—C6—O1 | −2.9 (3) | C18—C19—C20—C15 | −0.7 (3) |
C4—C5—C22—N4 | 25 (6) | C20—C15—C16—C8 | −177.64 (15) |
C4—C7—C8—C16 | 0.18 (18) | C20—C15—C16—C17 | 0.1 (3) |
C4—C7—C8—N6 | −178.41 (16) | C21—C3—N2—N1 | −178.61 (16) |
C4—C7—N5—C10 | 176.18 (15) | C22—C5—C6—N3 | −1.2 (3) |
C4—C15—C16—C8 | 1.7 (2) | C22—C5—C6—O1 | 177.29 (16) |
C4—C15—C16—C17 | 179.49 (15) | N3—C6—O1—C1 | 173.63 (14) |
C4—C15—C20—C19 | −178.78 (16) | N5—C7—C8—C16 | 178.85 (15) |
C5—C4—C7—C8 | −118.58 (15) | N5—C7—C8—N6 | 0.3 (3) |
C5—C4—C7—N5 | 62.8 (2) | N5—C10—C11—C12 | 177.58 (17) |
C5—C4—C15—C16 | 118.38 (16) | N6—C8—C16—C15 | 177.34 (17) |
C5—C4—C15—C20 | −62.3 (2) | N6—C8—C16—C17 | −0.1 (3) |
C5—C6—O1—C1 | −5.1 (2) | N6—C9—C10—C11 | 179.10 (16) |
C6—C5—C22—N4 | −155 (6) | N6—C9—C10—N5 | 0.9 (3) |
C7—C4—C5—C6 | −113.47 (18) | N6—C9—C14—C13 | −178.41 (18) |
C7—C4—C5—C22 | 66.33 (19) | N1—C1—C2—C3 | 0.4 (2) |
C7—C4—C15—C16 | −1.51 (18) | N1—C1—C2—C4 | −177.84 (15) |
C7—C4—C15—C20 | 177.78 (16) | N1—C1—O1—C6 | −174.05 (15) |
C7—C8—C16—C15 | −1.16 (19) | O1—C1—C2—C3 | −178.79 (15) |
C7—C8—C16—C17 | −178.62 (17) | O1—C1—C2—C4 | 3.0 (3) |
C7—C8—N6—C9 | 2.3 (2) | O1—C1—N1—N2 | 179.00 (14) |
C8—C7—N5—C10 | −2.3 (2) |
D—H···A | D—H | H···A | D···A | D—H···A |
N3—H2B···N5i | 0.86 | 2.22 | 3.064 (2) | 165 |
N2—H2···O2ii | 0.86 | 2.00 | 2.850 (2) | 168 |
O2—H2C···N6 | 0.82 | 2.11 | 2.917 (2) | 166 |
Symmetry codes: (i) −x+1, −y+2, −z; (ii) x+1/2, −y+3/2, z+1/2. |
Experimental details
Crystal data | |
Chemical formula | C22H14N6O·C2H6O |
Mr | 424.46 |
Crystal system, space group | Monoclinic, P21/n |
Temperature (K) | 293 |
a, b, c (Å) | 14.5060 (6), 11.1732 (3), 14.7365 (6) |
β (°) | 118.859 (5) |
V (Å3) | 2091.84 (13) |
Z | 4 |
Radiation type | Mo Kα |
µ (mm−1) | 0.09 |
Crystal size (mm) | 0.33 × 0.30 × 0.25 |
Data collection | |
Diffractometer | Agilent Xcalibur Sapphire3 Gemini ultra |
Absorption correction | Multi-scan (CrysAlis PRO; Agilent, 2011) |
Tmin, Tmax | 0.994, 1.000 |
No. of measured, independent and observed [I > 2σ(I)] reflections | 8822, 4504, 3259 |
Rint | 0.021 |
(sin θ/λ)max (Å−1) | 0.639 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.047, 0.121, 1.02 |
No. of reflections | 4504 |
No. of parameters | 292 |
H-atom treatment | H-atom parameters constrained |
Δρmax, Δρmin (e Å−3) | 0.23, −0.22 |
Computer programs: CrysAlis PRO (Agilent, 2011), SHELXS97 (Sheldrick, 2008), SHELXL97 (Sheldrick, 2008), OLEX2 (Dolomanov et al., 2009).
D—H···A | D—H | H···A | D···A | D—H···A |
N3—H2B···N5i | 0.86 | 2.22 | 3.064 (2) | 165.1 |
N2—H2···O2ii | 0.86 | 2.00 | 2.850 (2) | 167.7 |
O2—H2C···N6 | 0.82 | 2.11 | 2.917 (2) | 166.3 |
Symmetry codes: (i) −x+1, −y+2, −z; (ii) x+1/2, −y+3/2, z+1/2. |
Acknowledgements
We are grateful to the National Natural Science Foundation of China (Nos. 21072077 and 20672046) and the Guangdong Natural Science Foundation (Nos. 10151063201000051 and 8151063201000016) for financial support.
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.
Spiro compounds have received considerable interest due to their highly pronounced biological properties (Pradhan et al., 2006); Thus more and more novel spiroheterocycle compounds have been prepared and characterized (Saeedi et al., 2010); Dandia et al., 2011). In addition, quinoxaline derivatives also showed various biological activities (He et al., 2003). Herein, we report the crystal structure of the title compound which is a novel spiroheterocycle containing quinoxaline ring.
The title compound is a formed from the reaciton of 11H-indeno [1,2-b]quinoxalin-11-one, 3-methyl-2-pyrazolin-5-one and malononitrile. The molecular structure is shown in Fig. 1.
The five member ring (C4, C7, C8, C16, C15) and pyran ring (C4, C5, C6, O1, C1, C2) are perpendicular and the dihedral angle is 89.11 (3)°. N—H···N hydrogen bonding interaction connnects molecules. In addition, solvent molecule (ethanol) is hydrogen bonded by O—H···N and N—H···O (Table 1).