organic compounds
N,N′-Di-8-quinolyl-2,2′-(o-phenylenedioxy)diacetamide
aDepartment of Biology and Chemistry, Changzhi University, Changzhi, Shanxi 046011, People's Republic of China
*Correspondence e-mail: jlwangczu@126.com
In the title compound, C28H22N4O4, the molecule lies on a crystallographic twofold axis. The quinoline ring is essentially planar (give max or rms deviation 0.0186 Å), and the dihedral angle between the quinoline ring and the central benzene ring is 19.1 (4)°. Intramolecular N—H⋯(N,O) and C—H⋯O hydrogen bonds contribute to the formation of the roughly planar configuration. The crystal packing is stabilized by intermolecular C—H⋯O hydrogen bonds, and weak π–π interactions between the pyridine rings and central benzene rings of the neighboring molecules [centroid–centroid separation = 3.9009 (6) Å].
Related literature
For background to the applications of amide-type acyclic polyethers, see: Guggi et al. (1977); Wen et al. (2002); West et al. (1992). For a related amide-type acyclic polyether structure, see: Wen et al. (2005).
Experimental
Crystal data
|
Refinement
|
Data collection: SMART (Bruker 2001); cell SAINT (Bruker 2001); 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.
Supporting information
https://doi.org/10.1107/S1600536809041312/bq2164sup1.cif
contains datablocks I, global. DOI:Structure factors: contains datablock I. DOI: https://doi.org/10.1107/S1600536809041312/bq2164Isup2.hkl
Compound (I) was prepared according to the literature method of Wen et al. (2005). Yellow single crystals suitable for an X-ray diffraction study were obtained by slow evaporation of a petroleum ether-ethyl acetate solution (1:3 v/v) over a period of 10 d.
H atoms were positioned geometrically, with N—H = 0.86 Å and C—H = 0.95–0.99 Å, respectively, and constrained to ride on their parent atoms, with Uiso(H) = 1.2 Ueq(C,N).
cannot be determined reliably.The amide-type acyclic polyethers have attracted wide attention in coordination chemistry and separation science because they have good complexing ability (West et al., 1992) and high selectivity to metal ions (Wen et al., 2002). In addition, this kind of compounds have been used successfully as active materials for ion-selective electrodes (Guggi et al., 1977). Here, we report the synthesis and structure of the title compound.
The π-π interactions [short centroid-centroid separation = 3.9009 (6) Å] between the pyridine rings and central benzene rings of the neighboring molecules (Table 1 and Fig. 2).
of (I) contains one half-molecule, the other half being related by a crystallographic twofold axis (Fig. 1). All bond lengths and angles in (I) are within normal ranges, and comparable with those in the related compound (Wen et al., 2005). The quinoline ring is essentially planar, with a dihedral angle of 2.1 (2)° between the benzene (C4—C9) ring and pyridine (C1—C4/C9/N1) ring. The dihedral angle between the quinoline ring and the central benzene ring is 19.1 (4)°. The amide N and C atoms are also planar configuration because the sum of the angles around atoms N2 and C10 are 359.3° and 360.0°, respectively. The intramolecular hydrogen bonds, N2—H2A···N1, N2—H2A···O2 and C7-H7···O1, form stable five- and six-membered rings, this being helpful to the formation of the planar configuration. The crystal packing is stabilized by intermolecular C11—H11B···O1 hydrogen bonds, andFor background to the applications of amide-type acyclic polyethers, see: Guggi et al. (1977); Wen et al. (2002); West et al. (1992). For a related amide-type acyclic polyether structure, see: Wen et al. (2005).
Data collection: SMART (Bruker 2001); cell
SMART (Bruker 2001); data reduction: SAINT (Bruker 2001); program(s) used to solve structure: SHELXTL (Sheldrick, 2001); program(s) used to refine structure: SHELXTL (Sheldrick, 2001); molecular graphics: SHELXTL (Sheldrick, 2001); software used to prepare material for publication: SHELXTL (Sheldrick, 2001).C28H22N4O4 | F(000) = 2000 |
Mr = 478.50 | Dx = 1.358 Mg m−3 |
Orthorhombic, Fdd2 | Mo Kα radiation, λ = 0.71073 Å |
Hall symbol: F 2 -2d | Cell parameters from 925 reflections |
a = 32.648 (14) Å | θ = 2.5–20.7° |
b = 11.459 (4) Å | µ = 0.09 mm−1 |
c = 12.516 (5) Å | T = 294 K |
V = 4682 (3) Å3 | Prism, yellow |
Z = 8 | 0.20 × 0.14 × 0.12 mm |
Bruker SMART CCD area-detector diffractometer | 1080 independent reflections |
Radiation source: fine-focus sealed tube | 670 reflections with I > 2σ(I) |
Graphite monochromator | Rint = 0.060 |
phi and ω scans | θmax = 25.0°, θmin = 2.5° |
Absorption correction: multi-scan (SADABS; Sheldrick,1996) | h = −38→34 |
Tmin = 0.982, Tmax = 0.989 | k = −12→13 |
4687 measured reflections | l = −14→11 |
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)] = 0.037 | Hydrogen site location: inferred from neighbouring sites |
wR(F2) = 0.083 | H atoms treated by a mixture of independent and constrained refinement |
S = 1.00 | w = 1/[σ2(Fo2) + (0.0372P)2] where P = (Fo2 + 2Fc2)/3 |
1080 reflections | (Δ/σ)max < 0.001 |
167 parameters | Δρmax = 0.15 e Å−3 |
1 restraint | Δρmin = −0.16 e Å−3 |
C28H22N4O4 | V = 4682 (3) Å3 |
Mr = 478.50 | Z = 8 |
Orthorhombic, Fdd2 | Mo Kα radiation |
a = 32.648 (14) Å | µ = 0.09 mm−1 |
b = 11.459 (4) Å | T = 294 K |
c = 12.516 (5) Å | 0.20 × 0.14 × 0.12 mm |
Bruker SMART CCD area-detector diffractometer | 1080 independent reflections |
Absorption correction: multi-scan (SADABS; Sheldrick,1996) | 670 reflections with I > 2σ(I) |
Tmin = 0.982, Tmax = 0.989 | Rint = 0.060 |
4687 measured reflections |
R[F2 > 2σ(F2)] = 0.037 | 1 restraint |
wR(F2) = 0.083 | H atoms treated by a mixture of independent and constrained refinement |
S = 1.00 | Δρmax = 0.15 e Å−3 |
1080 reflections | Δρmin = −0.16 e Å−3 |
167 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 | ||
O1 | 0.13016 (8) | 1.0567 (3) | 0.5394 (3) | 0.0891 (10) | |
O2 | 0.03851 (7) | 1.0165 (2) | 0.39873 (19) | 0.0631 (8) | |
N1 | 0.00878 (10) | 0.8564 (3) | 0.6781 (2) | 0.0567 (8) | |
N2 | 0.07030 (10) | 0.9673 (3) | 0.5830 (3) | 0.0588 (9) | |
C1 | −0.02253 (12) | 0.8058 (3) | 0.7257 (3) | 0.0617 (11) | |
H1 | −0.0457 | 0.7900 | 0.6851 | 0.074* | |
C2 | −0.02300 (13) | 0.7745 (4) | 0.8338 (4) | 0.0695 (12) | |
H2 | −0.0460 | 0.7392 | 0.8634 | 0.083* | |
C3 | 0.01028 (14) | 0.7961 (4) | 0.8944 (4) | 0.0712 (12) | |
H3 | 0.0104 | 0.7760 | 0.9664 | 0.085* | |
C4 | 0.04461 (13) | 0.8488 (3) | 0.8485 (3) | 0.0588 (10) | |
C5 | 0.08058 (15) | 0.8758 (4) | 0.9066 (4) | 0.0772 (12) | |
H5 | 0.0827 | 0.8552 | 0.9783 | 0.093* | |
C6 | 0.11176 (16) | 0.9313 (4) | 0.8577 (4) | 0.0818 (15) | |
H6 | 0.1352 | 0.9484 | 0.8968 | 0.098* | |
C7 | 0.11003 (13) | 0.9644 (4) | 0.7497 (4) | 0.0717 (12) | |
H7 | 0.1319 | 1.0034 | 0.7182 | 0.086* | |
C8 | 0.07540 (11) | 0.9384 (3) | 0.6908 (3) | 0.0562 (10) | |
C9 | 0.04230 (11) | 0.8797 (3) | 0.7402 (3) | 0.0513 (10) | |
C10 | 0.09592 (12) | 1.0223 (3) | 0.5173 (3) | 0.0599 (11) | |
C11 | 0.08113 (11) | 1.0392 (3) | 0.4046 (4) | 0.0635 (11) | |
H11A | 0.0866 | 1.1186 | 0.3818 | 0.076* | |
H11B | 0.0957 | 0.9867 | 0.3571 | 0.076* | |
C12 | 0.02089 (10) | 1.0103 (3) | 0.2991 (3) | 0.0583 (10) | |
C13 | 0.04141 (13) | 1.0219 (3) | 0.2046 (3) | 0.0728 (12) | |
H13 | 0.0694 | 1.0369 | 0.2043 | 0.087* | |
C14 | 0.02013 (13) | 1.0111 (4) | 0.1088 (4) | 0.0905 (17) | |
H14 | 0.0340 | 1.0194 | 0.0443 | 0.109* | |
H2A | 0.0455 (12) | 0.947 (3) | 0.560 (3) | 0.077 (14)* |
U11 | U22 | U33 | U12 | U13 | U23 | |
O1 | 0.0467 (16) | 0.098 (2) | 0.122 (2) | −0.0231 (15) | −0.007 (2) | 0.003 (2) |
O2 | 0.0432 (15) | 0.086 (2) | 0.0598 (18) | −0.0090 (13) | 0.0050 (14) | −0.0031 (14) |
N1 | 0.0398 (18) | 0.055 (2) | 0.075 (2) | 0.0006 (16) | −0.0048 (18) | −0.0033 (16) |
N2 | 0.036 (2) | 0.065 (2) | 0.075 (3) | −0.0069 (18) | −0.0018 (19) | −0.0029 (17) |
C1 | 0.046 (3) | 0.055 (2) | 0.084 (3) | 0.002 (2) | −0.004 (2) | −0.001 (2) |
C2 | 0.068 (3) | 0.061 (3) | 0.080 (3) | 0.002 (2) | 0.012 (2) | −0.003 (2) |
C3 | 0.087 (3) | 0.062 (3) | 0.064 (3) | 0.011 (3) | 0.002 (3) | −0.005 (2) |
C4 | 0.060 (3) | 0.049 (2) | 0.067 (3) | 0.009 (2) | −0.010 (2) | −0.0103 (19) |
C5 | 0.090 (3) | 0.068 (3) | 0.073 (3) | 0.010 (3) | −0.020 (3) | −0.006 (2) |
C6 | 0.076 (4) | 0.068 (3) | 0.102 (4) | 0.014 (3) | −0.045 (3) | −0.017 (3) |
C7 | 0.053 (3) | 0.066 (3) | 0.097 (3) | 0.000 (2) | −0.018 (2) | −0.008 (2) |
C8 | 0.044 (3) | 0.056 (2) | 0.069 (3) | 0.004 (2) | −0.010 (2) | −0.0128 (19) |
C9 | 0.045 (2) | 0.040 (2) | 0.069 (3) | 0.0099 (18) | −0.004 (2) | −0.0094 (19) |
C10 | 0.040 (2) | 0.053 (3) | 0.087 (3) | 0.001 (2) | 0.005 (2) | −0.007 (2) |
C11 | 0.043 (2) | 0.060 (2) | 0.088 (3) | −0.0094 (18) | 0.011 (2) | 0.000 (2) |
C12 | 0.067 (2) | 0.052 (2) | 0.055 (2) | 0.005 (2) | 0.005 (2) | 0.0020 (18) |
C13 | 0.079 (3) | 0.067 (3) | 0.072 (3) | 0.003 (2) | 0.014 (3) | 0.009 (2) |
C14 | 0.124 (4) | 0.087 (4) | 0.061 (3) | 0.024 (4) | 0.013 (3) | 0.005 (3) |
O1—C10 | 1.217 (4) | C5—C6 | 1.348 (6) |
O2—C12 | 1.375 (4) | C5—H5 | 0.9300 |
O2—C11 | 1.417 (4) | C6—C7 | 1.406 (6) |
N1—C1 | 1.317 (4) | C6—H6 | 0.9300 |
N1—C9 | 1.369 (4) | C7—C8 | 1.382 (5) |
N2—C10 | 1.332 (5) | C7—H7 | 0.9300 |
N2—C8 | 1.399 (5) | C8—C9 | 1.415 (5) |
N2—H2A | 0.89 (4) | C10—C11 | 1.504 (5) |
C1—C2 | 1.400 (5) | C11—H11A | 0.9700 |
C1—H1 | 0.9300 | C11—H11B | 0.9700 |
C2—C3 | 1.348 (5) | C12—C13 | 1.366 (5) |
C2—H2 | 0.9300 | C12—C12i | 1.384 (7) |
C3—C4 | 1.397 (5) | C13—C14 | 1.391 (6) |
C3—H3 | 0.9300 | C13—H13 | 0.9300 |
C4—C9 | 1.403 (4) | C14—C14i | 1.339 (9) |
C4—C5 | 1.416 (5) | C14—H14 | 0.9300 |
C12—O2—C11 | 117.8 (3) | C6—C7—H7 | 120.4 |
C1—N1—C9 | 116.7 (3) | C7—C8—N2 | 124.1 (4) |
C10—N2—C8 | 129.3 (4) | C7—C8—C9 | 119.6 (4) |
C10—N2—H2A | 120 (3) | N2—C8—C9 | 116.3 (3) |
C8—N2—H2A | 111 (3) | N1—C9—C4 | 122.9 (3) |
N1—C1—C2 | 124.0 (4) | N1—C9—C8 | 117.1 (3) |
N1—C1—H1 | 118.0 | C4—C9—C8 | 120.1 (4) |
C2—C1—H1 | 118.0 | O1—C10—N2 | 126.1 (4) |
C3—C2—C1 | 119.2 (4) | O1—C10—C11 | 117.8 (4) |
C3—C2—H2 | 120.4 | N2—C10—C11 | 116.0 (3) |
C1—C2—H2 | 120.4 | O2—C11—C10 | 109.9 (3) |
C2—C3—C4 | 119.7 (4) | O2—C11—H11A | 109.7 |
C2—C3—H3 | 120.2 | C10—C11—H11A | 109.7 |
C4—C3—H3 | 120.2 | O2—C11—H11B | 109.7 |
C3—C4—C9 | 117.6 (4) | C10—C11—H11B | 109.7 |
C3—C4—C5 | 123.3 (4) | H11A—C11—H11B | 108.2 |
C9—C4—C5 | 119.1 (4) | C13—C12—O2 | 125.1 (3) |
C6—C5—C4 | 119.7 (4) | C13—C12—C12i | 120.0 (2) |
C6—C5—H5 | 120.1 | O2—C12—C12i | 114.91 (16) |
C4—C5—H5 | 120.1 | C12—C13—C14 | 119.5 (4) |
C5—C6—C7 | 122.3 (4) | C12—C13—H13 | 120.2 |
C5—C6—H6 | 118.8 | C14—C13—H13 | 120.2 |
C7—C6—H6 | 118.8 | C14i—C14—C13 | 120.5 (2) |
C8—C7—C6 | 119.2 (5) | C14i—C14—H14 | 119.8 |
C8—C7—H7 | 120.4 | C13—C14—H14 | 119.8 |
C9—N1—C1—C2 | −0.6 (6) | C3—C4—C9—C8 | 176.9 (4) |
N1—C1—C2—C3 | −0.2 (7) | C5—C4—C9—C8 | −0.8 (5) |
C1—C2—C3—C4 | −0.3 (6) | C7—C8—C9—N1 | 179.8 (3) |
C2—C3—C4—C9 | 1.5 (6) | N2—C8—C9—N1 | 0.4 (4) |
C2—C3—C4—C5 | 179.2 (4) | C7—C8—C9—C4 | 0.3 (5) |
C3—C4—C5—C6 | −177.1 (4) | N2—C8—C9—C4 | −179.1 (3) |
C9—C4—C5—C6 | 0.6 (6) | C8—N2—C10—O1 | 1.7 (6) |
C4—C5—C6—C7 | 0.1 (7) | C8—N2—C10—C11 | 179.5 (3) |
C5—C6—C7—C8 | −0.6 (7) | C12—O2—C11—C10 | −170.3 (3) |
C6—C7—C8—N2 | 179.8 (4) | O1—C10—C11—O2 | −168.2 (3) |
C6—C7—C8—C9 | 0.4 (6) | N2—C10—C11—O2 | 13.8 (4) |
C10—N2—C8—C7 | 0.3 (6) | C11—O2—C12—C13 | 1.5 (5) |
C10—N2—C8—C9 | 179.7 (3) | C11—O2—C12—C12i | −179.1 (4) |
C1—N1—C9—C4 | 2.0 (5) | O2—C12—C13—C14 | 178.5 (3) |
C1—N1—C9—C8 | −177.4 (3) | C12i—C12—C13—C14 | −0.9 (7) |
C3—C4—C9—N1 | −2.5 (5) | C12—C13—C14—C14i | −0.4 (8) |
C5—C4—C9—N1 | 179.7 (3) |
Symmetry code: (i) −x, −y+2, z. |
Experimental details
Crystal data | |
Chemical formula | C28H22N4O4 |
Mr | 478.50 |
Crystal system, space group | Orthorhombic, Fdd2 |
Temperature (K) | 294 |
a, b, c (Å) | 32.648 (14), 11.459 (4), 12.516 (5) |
V (Å3) | 4682 (3) |
Z | 8 |
Radiation type | Mo Kα |
µ (mm−1) | 0.09 |
Crystal size (mm) | 0.20 × 0.14 × 0.12 |
Data collection | |
Diffractometer | Bruker SMART CCD area-detector |
Absorption correction | Multi-scan (SADABS; Sheldrick,1996) |
Tmin, Tmax | 0.982, 0.989 |
No. of measured, independent and observed [I > 2σ(I)] reflections | 4687, 1080, 670 |
Rint | 0.060 |
(sin θ/λ)max (Å−1) | 0.595 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.037, 0.083, 1.00 |
No. of reflections | 1080 |
No. of parameters | 167 |
No. of restraints | 1 |
H-atom treatment | H atoms treated by a mixture of independent and constrained refinement |
Δρmax, Δρmin (e Å−3) | 0.15, −0.16 |
Computer programs: SMART (Bruker 2001), SAINT (Bruker 2001), SHELXTL (Sheldrick, 2001).
References
Bruker (2001). SMART and SAINT. Bruker AXS Inc., Madison, Wisconsin, USA. Google Scholar
Guggi, M., Pretsch, E. & Simon, W. (1977). Anal. Chim. Acta, 91, 107–112. CrossRef Web of Science Google Scholar
Sheldrick, G. M. (1996). SADABS. University of Göttingen, Germany. Google Scholar
Sheldrick, G. M. (2008). Acta Cryst. A64, 112–122. Web of Science CrossRef CAS IUCr Journals Google Scholar
Wen, Y. H., Lahiri, S., Qin, Z., Wu, X. L. & Liu, W. S. (2002). J. Radioanal. Nucl. Chem. 253, 263–265. Web of Science CrossRef CAS Google Scholar
Wen, Y.-H., Li, M.-J., Zhang, S.-S. & Li, X.-M. (2005). Acta Cryst. E61, o3373–o3374. Web of Science CSD CrossRef IUCr Journals Google Scholar
West, S. J., Ozawa, S., Seller, K., Tan, S. S. & Simon, W. (1992). Anal. Chem. 64, 533–540. CrossRef CAS Web of Science Google Scholar
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The amide-type acyclic polyethers have attracted wide attention in coordination chemistry and separation science because they have good complexing ability (West et al., 1992) and high selectivity to metal ions (Wen et al., 2002). In addition, this kind of compounds have been used successfully as active materials for ion-selective electrodes (Guggi et al., 1977). Here, we report the synthesis and structure of the title compound.
The asymmetric unit of (I) contains one half-molecule, the other half being related by a crystallographic twofold axis (Fig. 1). All bond lengths and angles in (I) are within normal ranges, and comparable with those in the related compound (Wen et al., 2005). The quinoline ring is essentially planar, with a dihedral angle of 2.1 (2)° between the benzene (C4—C9) ring and pyridine (C1—C4/C9/N1) ring. The dihedral angle between the quinoline ring and the central benzene ring is 19.1 (4)°. The amide N and C atoms are also planar configuration because the sum of the angles around atoms N2 and C10 are 359.3° and 360.0°, respectively. The intramolecular hydrogen bonds, N2—H2A···N1, N2—H2A···O2 and C7-H7···O1, form stable five- and six-membered rings, this being helpful to the formation of the planar configuration. The crystal packing is stabilized by intermolecular C11—H11B···O1 hydrogen bonds, and π-π interactions [short centroid-centroid separation = 3.9009 (6) Å] between the pyridine rings and central benzene rings of the neighboring molecules (Table 1 and Fig. 2).