organic compounds
8-(4-Nitrobenzyloxy)quinoline
aOrdered Matter Science Research Center, College of Chemistry and Chemical Engineering, Southeast University, Nanjing 211189, People's Republic of China
*Correspondence e-mail: liyh@seu.edu.cn
In the title compound, C16H12N2O3, the planar quinoline ring system [maximum deviation = 0.025 (3) Å] is oriented at a dihedral angle of 61.76 (7)° with respect to the benzene ring. In the intermolecular C—H⋯O interactions link the molecules into chains parallel to the b axis. π–π contacts between the quinoline rings [centroid–centroid distance = 3.623 (1) Å] may further stabilize the structure.
Related literature
For related structures, see: Fu & Zhao (2007); Li & Chen (2008); Zhao (2008). For bond-length data, see: Allen et al. (1987).
Experimental
Crystal data
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Refinement
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Data collection: CrystalClear (Rigaku, 2005); cell CrystalClear; data reduction: CrystalClear; program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: SHELXTL/PC (Sheldrick, 2008) and PLATON (Spek, 2009); software used to prepare material for publication: SHELXTL/PC and PLATON.
Supporting information
10.1107/S1600536809033212/hk2759sup1.cif
contains datablocks I, global. DOI:Structure factors: contains datablock I. DOI: 10.1107/S1600536809033212/hk2759Isup2.hkl
For the preparation of the title compound, quinolin-8-ol (1 g, 0.0069 mol) was added to a solution of sodium hydroxide (0.276 g, 0.0069 mol) in methanol (15 ml) and stirred for 3 h. Then, 1-(bromomethyl)-4-nitrobenzene (1.5318 g, 0.0069 mol) was added. The mixture was stirred at room temperature for 2 d. The title compound was isolated using
(petroleum ether: ethyl acetate, 1:1). Crystals suitable for X-ray analysis were obtained from slow evaporation of an ethyl acetate and tetrahydrofuran solution.H atoms were positioned geometrically with C-H = 0.93 and 0.97 Å for aromatic and methylene H atoms, respectively, and constrained to ride on their parent atoms, with Uiso(H) = 1.2Ueq(C). The
could not be determined reliably, and 1267 Friedel pairs were averaged before the last cycle of refinement.Data collection: CrystalClear (Rigaku, 2005); cell
CrystalClear (Rigaku, 2005); data reduction: CrystalClear (Rigaku, 2005); program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: SHELXTL/PC (Sheldrick, 2008) and PLATON (Spek, 2009); software used to prepare material for publication: SHELXTL/PC (Sheldrick, 2008) and PLATON (Spek, 2009).C16H12N2O3 | F(000) = 292 |
Mr = 280.28 | Dx = 1.405 Mg m−3 |
Monoclinic, Pn | Mo Kα radiation, λ = 0.71073 Å |
Hall symbol: P -2yac | Cell parameters from 1688 reflections |
a = 4.176 (3) Å | θ = 2.8–27.5° |
b = 7.395 (3) Å | µ = 0.10 mm−1 |
c = 21.513 (18) Å | T = 294 K |
β = 94.08 (3)° | Block, pale yellow |
V = 662.7 (8) Å3 | 0.20 × 0.20 × 0.20 mm |
Z = 2 |
Rigaku SCXmini diffractometer | 2566 independent reflections |
Radiation source: fine-focus sealed tube | 2134 reflections with I > 2σ(I) |
Graphite monochromator | Rint = 0.028 |
CCD_Profile_fitting scans | θmax = 26.0°, θmin = 2.9° |
Absorption correction: multi-scan (CrystalClear, Rigaku, 2005) | h = −5→5 |
Tmin = 0.789, Tmax = 0.980 | k = −9→9 |
5732 measured reflections | l = −26→26 |
Refinement on F2 | Hydrogen site location: inferred from neighbouring sites |
Least-squares matrix: full | H-atom parameters constrained |
R[F2 > 2σ(F2)] = 0.042 | w = 1/[σ2(Fo2) + (0.0196P)2 + 0.15P] where P = (Fo2 + 2Fc2)/3 |
wR(F2) = 0.086 | (Δ/σ)max < 0.001 |
S = 1.01 | Δρmax = 0.17 e Å−3 |
2566 reflections | Δρmin = −0.16 e Å−3 |
191 parameters | Extinction correction: SHELXL97 (Sheldrick, 2008), Fc*=kFc[1+0.001xFc2λ3/sin(2θ)]-1/4 |
Primary atom site location: structure-invariant direct methods | Extinction coefficient: 0.036 (3) |
Secondary atom site location: difference Fourier map |
C16H12N2O3 | V = 662.7 (8) Å3 |
Mr = 280.28 | Z = 2 |
Monoclinic, Pn | Mo Kα radiation |
a = 4.176 (3) Å | µ = 0.10 mm−1 |
b = 7.395 (3) Å | T = 294 K |
c = 21.513 (18) Å | 0.20 × 0.20 × 0.20 mm |
β = 94.08 (3)° |
Rigaku SCXmini diffractometer | 2566 independent reflections |
Absorption correction: multi-scan (CrystalClear, Rigaku, 2005) | 2134 reflections with I > 2σ(I) |
Tmin = 0.789, Tmax = 0.980 | Rint = 0.028 |
5732 measured reflections |
R[F2 > 2σ(F2)] = 0.042 | 191 parameters |
wR(F2) = 0.086 | H-atom parameters constrained |
S = 1.01 | Δρmax = 0.17 e Å−3 |
2566 reflections | Δρmin = −0.16 e Å−3 |
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 | ||
O1 | 0.8658 (4) | 0.5082 (2) | 0.23916 (8) | 0.0539 (4) | |
O2 | 0.1576 (6) | −0.2236 (3) | 0.08570 (10) | 0.1024 (8) | |
O3 | 0.3470 (9) | −0.1172 (4) | 0.00328 (11) | 0.1334 (11) | |
N1 | 1.2733 (5) | 0.4283 (2) | 0.33661 (9) | 0.0531 (5) | |
N2 | 0.2926 (6) | −0.1057 (3) | 0.05809 (11) | 0.0727 (7) | |
C1 | 1.4711 (6) | 0.3933 (4) | 0.38541 (12) | 0.0609 (7) | |
H1A | 1.5451 | 0.2752 | 0.3903 | 0.073* | |
C2 | 1.5794 (6) | 0.5201 (4) | 0.43068 (12) | 0.0654 (7) | |
H2A | 1.7160 | 0.4858 | 0.4647 | 0.078* | |
C3 | 1.4798 (6) | 0.6939 (4) | 0.42365 (11) | 0.0612 (7) | |
H3A | 1.5518 | 0.7809 | 0.4526 | 0.073* | |
C4 | 1.2677 (5) | 0.7427 (3) | 0.37262 (11) | 0.0525 (6) | |
C5 | 1.1593 (7) | 0.9231 (4) | 0.36205 (14) | 0.0649 (7) | |
H5A | 1.2225 | 1.0140 | 0.3902 | 0.078* | |
C6 | 0.9646 (6) | 0.9620 (4) | 0.31112 (14) | 0.0665 (8) | |
H6A | 0.8982 | 1.0807 | 0.3040 | 0.080* | |
C7 | 0.8594 (6) | 0.8260 (3) | 0.26827 (12) | 0.0584 (7) | |
H7A | 0.7238 | 0.8555 | 0.2336 | 0.070* | |
C8 | 0.9567 (5) | 0.6509 (3) | 0.27772 (11) | 0.0482 (6) | |
C9 | 1.1702 (5) | 0.6040 (3) | 0.33024 (11) | 0.0464 (5) | |
C10 | 0.6534 (6) | 0.5515 (3) | 0.18613 (12) | 0.0561 (6) | |
H10A | 0.7577 | 0.6328 | 0.1585 | 0.067* | |
H10B | 0.4614 | 0.6100 | 0.1992 | 0.067* | |
C11 | 0.5679 (5) | 0.3764 (3) | 0.15321 (11) | 0.0497 (6) | |
C12 | 0.6351 (5) | 0.3513 (4) | 0.09144 (11) | 0.0582 (6) | |
H12A | 0.7404 | 0.4417 | 0.0708 | 0.070* | |
C13 | 0.5469 (6) | 0.1932 (3) | 0.06027 (12) | 0.0598 (6) | |
H13A | 0.5918 | 0.1769 | 0.0189 | 0.072* | |
C14 | 0.3921 (6) | 0.0609 (3) | 0.09139 (11) | 0.0518 (6) | |
C15 | 0.3210 (6) | 0.0814 (3) | 0.15294 (11) | 0.0548 (6) | |
H15A | 0.2155 | −0.0096 | 0.1733 | 0.066* | |
C16 | 0.4104 (5) | 0.2402 (3) | 0.18354 (10) | 0.0537 (6) | |
H16A | 0.3646 | 0.2560 | 0.2249 | 0.064* |
U11 | U22 | U33 | U12 | U13 | U23 | |
O1 | 0.0583 (10) | 0.0516 (9) | 0.0505 (9) | 0.0015 (8) | −0.0043 (7) | −0.0077 (7) |
O2 | 0.149 (2) | 0.0699 (13) | 0.0880 (17) | −0.0360 (14) | 0.0046 (15) | −0.0007 (13) |
O3 | 0.228 (3) | 0.1087 (19) | 0.0649 (14) | −0.057 (2) | 0.0222 (17) | −0.0289 (14) |
N1 | 0.0568 (12) | 0.0473 (11) | 0.0548 (11) | −0.0060 (9) | 0.0017 (10) | −0.0030 (10) |
N2 | 0.0905 (18) | 0.0683 (16) | 0.0572 (14) | −0.0059 (13) | −0.0099 (13) | −0.0036 (12) |
C1 | 0.0636 (17) | 0.0560 (15) | 0.0618 (16) | −0.0086 (13) | −0.0033 (13) | 0.0008 (13) |
C2 | 0.0620 (17) | 0.080 (2) | 0.0534 (15) | −0.0124 (15) | −0.0033 (13) | −0.0022 (14) |
C3 | 0.0614 (16) | 0.0704 (19) | 0.0524 (15) | −0.0220 (14) | 0.0078 (12) | −0.0170 (13) |
C4 | 0.0507 (13) | 0.0567 (15) | 0.0520 (13) | −0.0156 (12) | 0.0157 (11) | −0.0109 (12) |
C5 | 0.0697 (18) | 0.0510 (15) | 0.0759 (18) | −0.0157 (13) | 0.0195 (15) | −0.0188 (14) |
C6 | 0.0714 (19) | 0.0420 (15) | 0.088 (2) | −0.0021 (12) | 0.0233 (16) | −0.0033 (14) |
C7 | 0.0585 (15) | 0.0511 (16) | 0.0665 (16) | 0.0000 (12) | 0.0101 (12) | 0.0025 (13) |
C8 | 0.0479 (13) | 0.0472 (14) | 0.0510 (13) | −0.0057 (11) | 0.0133 (10) | −0.0037 (11) |
C9 | 0.0484 (14) | 0.0470 (13) | 0.0449 (12) | −0.0104 (10) | 0.0103 (10) | −0.0073 (10) |
C10 | 0.0511 (15) | 0.0613 (16) | 0.0549 (15) | 0.0019 (12) | −0.0036 (12) | 0.0012 (12) |
C11 | 0.0415 (12) | 0.0599 (16) | 0.0467 (13) | 0.0017 (11) | −0.0030 (10) | 0.0009 (11) |
C12 | 0.0556 (14) | 0.0696 (16) | 0.0495 (14) | −0.0104 (12) | 0.0040 (11) | 0.0031 (13) |
C13 | 0.0619 (15) | 0.0740 (18) | 0.0432 (13) | −0.0028 (14) | 0.0021 (11) | 0.0003 (13) |
C14 | 0.0559 (14) | 0.0521 (14) | 0.0464 (13) | 0.0021 (11) | −0.0046 (11) | 0.0017 (11) |
C15 | 0.0614 (16) | 0.0559 (15) | 0.0470 (13) | 0.0009 (12) | 0.0041 (11) | 0.0102 (11) |
C16 | 0.0545 (14) | 0.0630 (16) | 0.0438 (12) | 0.0039 (11) | 0.0043 (10) | 0.0038 (11) |
O1—C8 | 1.379 (3) | C8—C7 | 1.367 (3) |
O1—C10 | 1.431 (3) | C9—N1 | 1.372 (3) |
N1—C1 | 1.315 (3) | C9—C4 | 1.413 (3) |
N2—O2 | 1.216 (3) | C9—C8 | 1.431 (3) |
N2—O3 | 1.220 (3) | C10—C11 | 1.507 (3) |
N2—C14 | 1.470 (3) | C10—H10A | 0.9700 |
C1—C2 | 1.403 (3) | C10—H10B | 0.9700 |
C1—H1A | 0.9300 | C11—C16 | 1.391 (3) |
C2—H2A | 0.9300 | C12—C11 | 1.390 (3) |
C3—C2 | 1.356 (4) | C12—C13 | 1.385 (3) |
C3—H3A | 0.9300 | C12—H12A | 0.9300 |
C4—C3 | 1.408 (3) | C13—C14 | 1.373 (3) |
C4—C5 | 1.422 (3) | C13—H13A | 0.9300 |
C5—C6 | 1.348 (4) | C15—C14 | 1.386 (3) |
C5—H5A | 0.9300 | C15—C16 | 1.385 (3) |
C6—H6A | 0.9300 | C15—H15A | 0.9300 |
C7—C6 | 1.413 (4) | C16—H16A | 0.9300 |
C7—H7A | 0.9300 | ||
C8—O1—C10 | 115.90 (19) | C7—C8—C9 | 120.6 (2) |
C1—N1—C9 | 116.2 (2) | N1—C9—C4 | 123.3 (2) |
O2—N2—C14 | 119.2 (2) | N1—C9—C8 | 118.80 (18) |
O3—N2—O2 | 123.2 (3) | C4—C9—C8 | 117.9 (2) |
O3—N2—C14 | 117.7 (3) | O1—C10—C11 | 107.2 (2) |
N1—C1—C2 | 125.2 (3) | O1—C10—H10A | 110.3 |
N1—C1—H1A | 117.4 | O1—C10—H10B | 110.3 |
C2—C1—H1A | 117.4 | C11—C10—H10A | 110.3 |
C1—C2—H2A | 120.8 | C11—C10—H10B | 110.3 |
C3—C2—C1 | 118.3 (3) | H10A—C10—H10B | 108.5 |
C3—C2—H2A | 120.8 | C12—C11—C10 | 120.5 (2) |
C2—C3—C4 | 120.1 (2) | C12—C11—C16 | 119.1 (2) |
C2—C3—H3A | 120.0 | C16—C11—C10 | 120.4 (2) |
C4—C3—H3A | 120.0 | C11—C12—H12A | 119.6 |
C3—C4—C9 | 117.0 (2) | C13—C12—C11 | 120.7 (2) |
C3—C4—C5 | 122.7 (2) | C13—C12—H12A | 119.6 |
C9—C4—C5 | 120.3 (2) | C12—C13—H13A | 120.5 |
C4—C5—H5A | 120.1 | C14—C13—C12 | 118.9 (2) |
C6—C5—C4 | 119.8 (2) | C14—C13—H13A | 120.5 |
C6—C5—H5A | 120.1 | C13—C14—N2 | 119.1 (2) |
C5—C6—C7 | 121.3 (3) | C13—C14—C15 | 121.9 (2) |
C5—C6—H6A | 119.3 | C15—C14—N2 | 119.0 (2) |
C7—C6—H6A | 119.3 | C14—C15—H15A | 120.7 |
C6—C7—H7A | 120.0 | C16—C15—C14 | 118.6 (2) |
C8—C7—C6 | 120.1 (2) | C16—C15—H15A | 120.7 |
C8—C7—H7A | 120.0 | C11—C16—H16A | 119.6 |
O1—C8—C9 | 114.75 (19) | C15—C16—C11 | 120.8 (2) |
C7—C8—O1 | 124.7 (2) | C15—C16—H16A | 119.6 |
D—H···A | D—H | H···A | D···A | D—H···A |
C10—H10A···O2i | 0.97 | 2.60 | 3.538 (3) | 164 |
Symmetry code: (i) x+1, y+1, z. |
Experimental details
Crystal data | |
Chemical formula | C16H12N2O3 |
Mr | 280.28 |
Crystal system, space group | Monoclinic, Pn |
Temperature (K) | 294 |
a, b, c (Å) | 4.176 (3), 7.395 (3), 21.513 (18) |
β (°) | 94.08 (3) |
V (Å3) | 662.7 (8) |
Z | 2 |
Radiation type | Mo Kα |
µ (mm−1) | 0.10 |
Crystal size (mm) | 0.20 × 0.20 × 0.20 |
Data collection | |
Diffractometer | Rigaku SCXmini diffractometer |
Absorption correction | Multi-scan (CrystalClear, Rigaku, 2005) |
Tmin, Tmax | 0.789, 0.980 |
No. of measured, independent and observed [I > 2σ(I)] reflections | 5732, 2566, 2134 |
Rint | 0.028 |
(sin θ/λ)max (Å−1) | 0.617 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.042, 0.086, 1.01 |
No. of reflections | 2566 |
No. of parameters | 191 |
No. of restraints | ? |
H-atom treatment | H-atom parameters constrained |
Δρmax, Δρmin (e Å−3) | 0.17, −0.16 |
Computer programs: CrystalClear (Rigaku, 2005), SHELXS97 (Sheldrick, 2008), SHELXL97 (Sheldrick, 2008), SHELXTL/PC (Sheldrick, 2008) and PLATON (Spek, 2009).
D—H···A | D—H | H···A | D···A | D—H···A |
C10—H10A···O2i | 0.97 | 2.60 | 3.538 (3) | 164 |
Symmetry code: (i) x+1, y+1, z. |
Acknowledgements
This work was supported by a start-up grant (No. 4007041028) and a Science Technology grant (No. KJ2009375) from Southeast University to Professor Yong-Hua Li.
References
Allen, F. H., Kennard, O., Watson, D. G., Brammer, L., Orpen, A. G. & Taylor, R. (1987). J. Chem. Soc. Perkin Trans. 2, pp. S1–19. CrossRef Web of Science Google Scholar
Bruker (2000). SADABS. Bruker AXS Inc., Madison, Wisconsin, USA. Google Scholar
Fu, D.-W. & Zhao, H. (2007). Acta Cryst. E63, o3206. Web of Science CSD CrossRef IUCr Journals Google Scholar
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Sheldrick, G. M. (2008). Acta Cryst. A64, 112–122. Web of Science CrossRef CAS IUCr Journals Google Scholar
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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.
Recently, we have reported the syntheses and crystal structures of some benzonitrile compounds (Fu & Zhao, 2007; Li & Chen, 2008; Zhao, 2008). As an extension of our work on the structural characterizations of benzonitrile derivatives, we report herein the synthesis and crystal structure of the title compound.
In the molecule of the title compound, (Fig. 1), the bond lengths (Allen et al., 1987) and angles are within normal ranges. The quinoline ring system is planar with a maximum deviation of 0.025 (3) Å for atom C6, and it is oriented with respect to the benzene ring at a dihedral angle of 61.76 (7)°.
In the crystal structure, intermolecular C-H···O interactions (Table 1) link the molecules into chains paralel to the b axis (Fig. 2), in which they may be effective in the stabilization of the structure. The π–π contact between the quinoline rings, Cg1—Cg2i [symmetry code: (i) 1 + x, y, z, where Cg1 and Cg2 are centroids of the rings (N1/C1-C4/C9) and (C4-C9), respectively] may further stabilize the structure, with centroid-centroid distance of 3.623 (1) Å.