organic compounds
4-{(E)-N′-[2-(8-Quinolyloxy)acetyl]hydrazonomethyl}benzoic acid methanol solvate
aCollege of Chemistry and Pharmacy, Qingdao Agricultural University, Shandong 266109, People's Republic of China
*Correspondence e-mail: furbear01@163.com
In the title compound, C19H15N3O4·CH4O, the mean planes of the benzene ring and the quinoline system make a dihedral angle of 6.7 (2)°. The acetohydrazide host molecules are connected via intermolecular O—H⋯O hydrogen bonds into two-dimensional zigzag sheets extending in the ab plane. The methanol solvent molecule is linked to the host molecule via intermolecular N—H⋯O and O—H⋯N hydrogen bonds.
Related literature
For the coordination chemistry of 8-hydroxyquinoline and its derivatives, see: Chen & Shi (1998). For a related structure, see: Wen et al. (2005). For bond-length data, see: Allen et al. (1987).
Experimental
Crystal data
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Refinement
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Data collection: SMART (Siemens, 1996); cell SAINT (Siemens, 1996); data reduction: SAINT; program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: SHELXTL (Sheldrick, 2008); software used to prepare material for publication: SHELXTL.
Supporting information
10.1107/S1600536809021576/cs2119sup1.cif
contains datablocks global, I. DOI:Structure factors: contains datablock I. DOI: 10.1107/S1600536809021576/cs2119Isup2.hkl
2-(quinolin-8-yloxy)acetohydrazide (2.18 g, 10 mmol), 4-formylbenzoic acid (1.50 g, 10 mmol), ethanol (40 ml) and some drops of acetic acid were added to a 100 ml flask, and refluxed for 3 h. After cooling to room temperature, the mixture was filtered. Colourless single crystals suitable for X-ray diffraction study were obtained by slow evaporation of a acetone-methanol (1:2, v/v) solution over a period of 2 d.
All H atoms were initially located in a difference Fourier map. C-atoms bound H atoms were constrained to ideal geometry with C—H = 0.93 Å for aryl, 0.97 Å for the methylene, and 0.96 Å for the methyl H atoms, while O—H = 0.82 Å and N—H = 0.86 Å were applied. H-atoms displacement values were constarined as Uiso(H) = 1.2Ueq(C,N), or 1.5Ueq(C) for the methyl groups, and 1.5Ueq(O).
Data collection: SMART (Siemens, 1996); cell
SAINT (Siemens, 1996); data reduction: SAINT (Siemens, 1996); program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: SHELXTL (Sheldrick, 2008); software used to prepare material for publication: SHELXTL (Sheldrick, 2008).C19H15N3O4·CH4O | F(000) = 800 |
Mr = 381.38 | Dx = 1.355 Mg m−3 |
Monoclinic, P21/c | Mo Kα radiation, λ = 0.71073 Å |
Hall symbol: -P 2ybc | Cell parameters from 1033 reflections |
a = 10.1166 (18) Å | θ = 2.9–20.4° |
b = 11.095 (2) Å | µ = 0.10 mm−1 |
c = 18.510 (3) Å | T = 295 K |
β = 115.896 (7)° | Block, colorless |
V = 1869.0 (6) Å3 | 0.22 × 0.19 × 0.18 mm |
Z = 4 |
Bruker SMART CCD area-detector diffractometer | 3302 independent reflections |
Radiation source: fine-focus sealed tube | 1666 reflections with I > 2σ(I) |
Graphite monochromator | Rint = 0.046 |
ϕ and ω scans | θmax = 25.1°, θmin = 2.2° |
Absorption correction: multi-scan (SADABS; Sheldrick, 1996) | h = −9→12 |
Tmin = 0.979, Tmax = 0.982 | k = −13→11 |
9663 measured reflections | l = −22→15 |
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)] = 0.054 | Hydrogen site location: inferred from neighbouring sites |
wR(F2) = 0.161 | H-atom parameters constrained |
S = 1.02 | w = 1/[σ2(Fo2) + (0.0693P)2 + 0.0146P] where P = (Fo2 + 2Fc2)/3 |
3302 reflections | (Δ/σ)max < 0.001 |
255 parameters | Δρmax = 0.20 e Å−3 |
0 restraints | Δρmin = −0.20 e Å−3 |
C19H15N3O4·CH4O | V = 1869.0 (6) Å3 |
Mr = 381.38 | Z = 4 |
Monoclinic, P21/c | Mo Kα radiation |
a = 10.1166 (18) Å | µ = 0.10 mm−1 |
b = 11.095 (2) Å | T = 295 K |
c = 18.510 (3) Å | 0.22 × 0.19 × 0.18 mm |
β = 115.896 (7)° |
Bruker SMART CCD area-detector diffractometer | 3302 independent reflections |
Absorption correction: multi-scan (SADABS; Sheldrick, 1996) | 1666 reflections with I > 2σ(I) |
Tmin = 0.979, Tmax = 0.982 | Rint = 0.046 |
9663 measured reflections |
R[F2 > 2σ(F2)] = 0.054 | 0 restraints |
wR(F2) = 0.161 | H-atom parameters constrained |
S = 1.02 | Δρmax = 0.20 e Å−3 |
3302 reflections | Δρmin = −0.20 e Å−3 |
255 parameters |
x | y | z | Uiso*/Ueq | ||
O1 | 0.63801 (19) | 0.10228 (18) | 0.61156 (11) | 0.0599 (6) | |
O2 | 0.9689 (2) | −0.0368 (2) | 0.74781 (14) | 0.0785 (7) | |
O3 | 1.7457 (2) | 0.4174 (2) | 0.71168 (15) | 0.0813 (7) | |
H3 | 1.8346 | 0.4274 | 0.7284 | 0.122* | |
O4 | 1.8166 (2) | 0.2717 (2) | 0.80207 (16) | 0.1010 (9) | |
O5 | 0.7722 (3) | 0.3037 (3) | 0.55054 (17) | 0.1139 (11) | |
H5 | 0.6857 | 0.2843 | 0.5343 | 0.171* | |
N1 | 0.4754 (3) | 0.2645 (3) | 0.50135 (15) | 0.0710 (8) | |
N2 | 0.9278 (2) | 0.1277 (2) | 0.66847 (14) | 0.0584 (7) | |
H2 | 0.8646 | 0.1762 | 0.6347 | 0.070* | |
N3 | 1.0764 (2) | 0.1439 (2) | 0.69304 (14) | 0.0571 (7) | |
C1 | 0.3936 (4) | 0.3439 (4) | 0.4474 (2) | 0.0946 (12) | |
H1 | 0.4414 | 0.4064 | 0.4351 | 0.113* | |
C2 | 0.2410 (4) | 0.3411 (4) | 0.4076 (2) | 0.1093 (14) | |
H2A | 0.1892 | 0.3998 | 0.3700 | 0.131* | |
C3 | 0.1702 (4) | 0.2509 (4) | 0.4249 (2) | 0.0895 (12) | |
H3A | 0.0682 | 0.2465 | 0.3988 | 0.107* | |
C4 | 0.2502 (3) | 0.1634 (3) | 0.48242 (18) | 0.0657 (9) | |
C5 | 0.1831 (4) | 0.0687 (4) | 0.5031 (2) | 0.0820 (11) | |
H5A | 0.0813 | 0.0612 | 0.4782 | 0.098* | |
C6 | 0.2653 (4) | −0.0124 (3) | 0.5593 (2) | 0.0830 (11) | |
H6 | 0.2192 | −0.0747 | 0.5732 | 0.100* | |
C7 | 0.4194 (3) | −0.0038 (3) | 0.5971 (2) | 0.0694 (9) | |
H7 | 0.4742 | −0.0604 | 0.6356 | 0.083* | |
C8 | 0.4887 (3) | 0.0864 (3) | 0.57778 (16) | 0.0542 (8) | |
C9 | 0.4050 (3) | 0.1729 (3) | 0.51962 (17) | 0.0563 (8) | |
C10 | 0.7231 (3) | 0.0167 (3) | 0.67118 (18) | 0.0582 (8) | |
H10A | 0.6963 | −0.0640 | 0.6495 | 0.070* | |
H10B | 0.7007 | 0.0238 | 0.7169 | 0.070* | |
C11 | 0.8852 (3) | 0.0348 (3) | 0.69869 (19) | 0.0569 (8) | |
C12 | 1.1136 (3) | 0.2365 (3) | 0.66626 (17) | 0.0616 (8) | |
H12 | 1.0418 | 0.2893 | 0.6324 | 0.074* | |
C13 | 1.2683 (3) | 0.2610 (3) | 0.68819 (17) | 0.0553 (8) | |
C14 | 1.3077 (3) | 0.3561 (3) | 0.65354 (18) | 0.0634 (9) | |
H14 | 1.2351 | 0.4054 | 0.6168 | 0.076* | |
C15 | 1.4531 (3) | 0.3789 (3) | 0.67266 (17) | 0.0611 (8) | |
H15 | 1.4774 | 0.4426 | 0.6481 | 0.073* | |
C16 | 1.5624 (3) | 0.3087 (3) | 0.72761 (17) | 0.0529 (8) | |
C17 | 1.5237 (3) | 0.2143 (3) | 0.76234 (19) | 0.0661 (9) | |
H17 | 1.5969 | 0.1660 | 0.7996 | 0.079* | |
C18 | 1.3783 (3) | 0.1893 (3) | 0.74314 (18) | 0.0634 (9) | |
H18 | 1.3544 | 0.1246 | 0.7671 | 0.076* | |
C19 | 1.7212 (3) | 0.3295 (3) | 0.7518 (2) | 0.0640 (9) | |
C20 | 0.7908 (5) | 0.3609 (5) | 0.4924 (3) | 0.158 (2) | |
H20A | 0.8434 | 0.4347 | 0.5130 | 0.236* | |
H20B | 0.6967 | 0.3786 | 0.4491 | 0.236* | |
H20C | 0.8459 | 0.3107 | 0.4731 | 0.236* |
U11 | U22 | U33 | U12 | U13 | U23 | |
O1 | 0.0316 (11) | 0.0766 (15) | 0.0663 (12) | −0.0052 (9) | 0.0166 (9) | 0.0076 (11) |
O2 | 0.0439 (13) | 0.0783 (16) | 0.1085 (17) | 0.0127 (11) | 0.0290 (12) | 0.0269 (14) |
O3 | 0.0437 (13) | 0.0831 (18) | 0.1124 (18) | −0.0145 (12) | 0.0296 (13) | 0.0009 (14) |
O4 | 0.0376 (13) | 0.126 (2) | 0.120 (2) | 0.0027 (14) | 0.0169 (13) | 0.0300 (18) |
O5 | 0.0558 (16) | 0.152 (3) | 0.114 (2) | −0.0054 (17) | 0.0187 (15) | 0.065 (2) |
N1 | 0.0464 (16) | 0.096 (2) | 0.0650 (16) | 0.0006 (15) | 0.0193 (13) | 0.0115 (15) |
N2 | 0.0301 (13) | 0.0731 (18) | 0.0675 (16) | 0.0000 (11) | 0.0173 (12) | 0.0058 (13) |
N3 | 0.0347 (14) | 0.0673 (19) | 0.0693 (16) | −0.0030 (12) | 0.0226 (12) | −0.0025 (13) |
C1 | 0.063 (3) | 0.113 (3) | 0.090 (3) | −0.002 (2) | 0.017 (2) | 0.034 (2) |
C2 | 0.061 (3) | 0.146 (4) | 0.099 (3) | 0.015 (3) | 0.014 (2) | 0.035 (3) |
C3 | 0.042 (2) | 0.130 (4) | 0.079 (2) | 0.001 (2) | 0.0101 (19) | 0.003 (2) |
C4 | 0.0347 (17) | 0.097 (3) | 0.0587 (19) | −0.0039 (17) | 0.0137 (15) | −0.0129 (18) |
C5 | 0.0358 (19) | 0.116 (3) | 0.086 (2) | −0.015 (2) | 0.0189 (18) | −0.018 (2) |
C6 | 0.051 (2) | 0.097 (3) | 0.102 (3) | −0.026 (2) | 0.034 (2) | −0.012 (2) |
C7 | 0.0426 (18) | 0.082 (2) | 0.082 (2) | −0.0115 (17) | 0.0262 (17) | 0.0001 (18) |
C8 | 0.0351 (16) | 0.072 (2) | 0.0551 (18) | −0.0051 (15) | 0.0197 (14) | −0.0090 (15) |
C9 | 0.0375 (17) | 0.078 (2) | 0.0539 (17) | −0.0065 (15) | 0.0199 (14) | −0.0074 (16) |
C10 | 0.0399 (17) | 0.066 (2) | 0.0674 (19) | −0.0008 (15) | 0.0222 (15) | 0.0061 (16) |
C11 | 0.0386 (17) | 0.063 (2) | 0.071 (2) | −0.0008 (15) | 0.0256 (16) | 0.0017 (17) |
C12 | 0.0340 (17) | 0.074 (2) | 0.069 (2) | 0.0005 (15) | 0.0151 (15) | 0.0062 (17) |
C13 | 0.0381 (17) | 0.062 (2) | 0.0602 (18) | −0.0018 (14) | 0.0167 (14) | −0.0031 (15) |
C14 | 0.0411 (18) | 0.070 (2) | 0.069 (2) | 0.0000 (15) | 0.0145 (15) | 0.0123 (16) |
C15 | 0.0451 (19) | 0.063 (2) | 0.070 (2) | −0.0090 (15) | 0.0208 (16) | 0.0031 (16) |
C16 | 0.0358 (16) | 0.057 (2) | 0.0625 (18) | −0.0063 (14) | 0.0180 (14) | −0.0115 (15) |
C17 | 0.0411 (18) | 0.073 (2) | 0.078 (2) | 0.0042 (16) | 0.0203 (16) | 0.0082 (18) |
C18 | 0.0443 (18) | 0.067 (2) | 0.079 (2) | 0.0015 (15) | 0.0269 (16) | 0.0113 (17) |
C19 | 0.044 (2) | 0.069 (2) | 0.076 (2) | −0.0083 (17) | 0.0242 (18) | −0.0094 (19) |
C20 | 0.088 (4) | 0.201 (6) | 0.163 (5) | 0.004 (3) | 0.036 (3) | 0.073 (4) |
O1—C8 | 1.371 (3) | C6—C7 | 1.406 (4) |
O1—C10 | 1.425 (3) | C6—H6 | 0.9300 |
O2—C11 | 1.225 (3) | C7—C8 | 1.357 (4) |
O3—C19 | 1.313 (4) | C7—H7 | 0.9300 |
O3—H3 | 0.8200 | C8—C9 | 1.415 (4) |
O4—C19 | 1.193 (4) | C10—C11 | 1.503 (4) |
O5—C20 | 1.332 (5) | C10—H10A | 0.9700 |
O5—H5 | 0.8200 | C10—H10B | 0.9700 |
N1—C1 | 1.318 (4) | C12—C13 | 1.461 (4) |
N1—C9 | 1.365 (4) | C12—H12 | 0.9300 |
N2—C11 | 1.332 (3) | C13—C14 | 1.382 (4) |
N2—N3 | 1.379 (3) | C13—C18 | 1.384 (4) |
N2—H2 | 0.8600 | C14—C15 | 1.378 (4) |
N3—C12 | 1.267 (3) | C14—H14 | 0.9300 |
C1—C2 | 1.390 (5) | C15—C16 | 1.372 (4) |
C1—H1 | 0.9300 | C15—H15 | 0.9300 |
C2—C3 | 1.348 (5) | C16—C17 | 1.372 (4) |
C2—H2A | 0.9300 | C16—C19 | 1.486 (4) |
C3—C4 | 1.407 (5) | C17—C18 | 1.381 (4) |
C3—H3A | 0.9300 | C17—H17 | 0.9300 |
C4—C5 | 1.393 (5) | C18—H18 | 0.9300 |
C4—C9 | 1.413 (4) | C20—H20A | 0.9600 |
C5—C6 | 1.351 (5) | C20—H20B | 0.9600 |
C5—H5A | 0.9300 | C20—H20C | 0.9600 |
C8—O1—C10 | 116.1 (2) | C11—C10—H10A | 109.2 |
C19—O3—H3 | 109.5 | O1—C10—H10B | 109.2 |
C20—O5—H5 | 109.5 | C11—C10—H10B | 109.2 |
C1—N1—C9 | 117.5 (3) | H10A—C10—H10B | 107.9 |
C11—N2—N3 | 118.0 (2) | O2—C11—N2 | 124.6 (3) |
C11—N2—H2 | 121.0 | O2—C11—C10 | 117.6 (3) |
N3—N2—H2 | 121.0 | N2—C11—C10 | 117.8 (3) |
C12—N3—N2 | 116.3 (2) | N3—C12—C13 | 120.5 (3) |
N1—C1—C2 | 124.9 (4) | N3—C12—H12 | 119.8 |
N1—C1—H1 | 117.6 | C13—C12—H12 | 119.8 |
C2—C1—H1 | 117.6 | C14—C13—C18 | 118.5 (3) |
C3—C2—C1 | 118.2 (4) | C14—C13—C12 | 120.3 (3) |
C3—C2—H2A | 120.9 | C18—C13—C12 | 121.2 (3) |
C1—C2—H2A | 120.9 | C15—C14—C13 | 120.9 (3) |
C2—C3—C4 | 120.2 (3) | C15—C14—H14 | 119.6 |
C2—C3—H3A | 119.9 | C13—C14—H14 | 119.6 |
C4—C3—H3A | 119.9 | C16—C15—C14 | 120.7 (3) |
C5—C4—C3 | 122.7 (3) | C16—C15—H15 | 119.7 |
C5—C4—C9 | 119.5 (3) | C14—C15—H15 | 119.7 |
C3—C4—C9 | 117.8 (3) | C15—C16—C17 | 118.6 (3) |
C6—C5—C4 | 120.3 (3) | C15—C16—C19 | 123.4 (3) |
C6—C5—H5A | 119.9 | C17—C16—C19 | 118.0 (3) |
C4—C5—H5A | 119.9 | C16—C17—C18 | 121.4 (3) |
C5—C6—C7 | 120.9 (3) | C16—C17—H17 | 119.3 |
C5—C6—H6 | 119.5 | C18—C17—H17 | 119.3 |
C7—C6—H6 | 119.5 | C17—C18—C13 | 119.9 (3) |
C8—C7—C6 | 120.5 (3) | C17—C18—H18 | 120.1 |
C8—C7—H7 | 119.8 | C13—C18—H18 | 120.1 |
C6—C7—H7 | 119.8 | O4—C19—O3 | 123.5 (3) |
C7—C8—O1 | 124.6 (3) | O4—C19—C16 | 123.4 (3) |
C7—C8—C9 | 119.7 (3) | O3—C19—C16 | 113.1 (3) |
O1—C8—C9 | 115.7 (3) | O5—C20—H20A | 109.5 |
N1—C9—C4 | 121.5 (3) | O5—C20—H20B | 109.5 |
N1—C9—C8 | 119.3 (3) | H20A—C20—H20B | 109.5 |
C4—C9—C8 | 119.2 (3) | O5—C20—H20C | 109.5 |
O1—C10—C11 | 112.0 (2) | H20A—C20—H20C | 109.5 |
O1—C10—H10A | 109.2 | H20B—C20—H20C | 109.5 |
C11—N2—N3—C12 | −176.6 (3) | O1—C8—C9—C4 | −179.5 (2) |
C9—N1—C1—C2 | −0.2 (6) | C8—O1—C10—C11 | 174.5 (2) |
N1—C1—C2—C3 | 0.0 (7) | N3—N2—C11—O2 | 1.1 (5) |
C1—C2—C3—C4 | 0.5 (6) | N3—N2—C11—C10 | −179.4 (2) |
C2—C3—C4—C5 | 179.6 (4) | O1—C10—C11—O2 | −177.3 (3) |
C2—C3—C4—C9 | −0.9 (6) | O1—C10—C11—N2 | 3.1 (4) |
C3—C4—C5—C6 | −179.5 (3) | N2—N3—C12—C13 | −179.4 (2) |
C9—C4—C5—C6 | 1.1 (5) | N3—C12—C13—C14 | 174.4 (3) |
C4—C5—C6—C7 | −0.8 (5) | N3—C12—C13—C18 | −4.9 (5) |
C5—C6—C7—C8 | 0.0 (5) | C18—C13—C14—C15 | 0.5 (5) |
C6—C7—C8—O1 | 179.7 (3) | C12—C13—C14—C15 | −178.9 (3) |
C6—C7—C8—C9 | 0.5 (5) | C13—C14—C15—C16 | −1.0 (5) |
C10—O1—C8—C7 | −0.3 (4) | C14—C15—C16—C17 | 0.8 (4) |
C10—O1—C8—C9 | 179.0 (2) | C14—C15—C16—C19 | −179.0 (3) |
C1—N1—C9—C4 | −0.1 (5) | C15—C16—C17—C18 | −0.1 (5) |
C1—N1—C9—C8 | −179.4 (3) | C19—C16—C17—C18 | 179.8 (3) |
C5—C4—C9—N1 | −179.8 (3) | C16—C17—C18—C13 | −0.5 (5) |
C3—C4—C9—N1 | 0.7 (5) | C14—C13—C18—C17 | 0.3 (5) |
C5—C4—C9—C8 | −0.5 (4) | C12—C13—C18—C17 | 179.6 (3) |
C3—C4—C9—C8 | 180.0 (3) | C15—C16—C19—O4 | 176.7 (3) |
C7—C8—C9—N1 | 179.1 (3) | C17—C16—C19—O4 | −3.2 (5) |
O1—C8—C9—N1 | −0.3 (4) | C15—C16—C19—O3 | −3.9 (4) |
C7—C8—C9—C4 | −0.2 (4) | C17—C16—C19—O3 | 176.3 (3) |
D—H···A | D—H | H···A | D···A | D—H···A |
O3—H3···O2i | 0.82 | 1.88 | 2.695 (3) | 171 |
O5—H5···N1 | 0.82 | 1.95 | 2.765 (3) | 171 |
N2—H2···O5 | 0.86 | 2.01 | 2.838 (4) | 162 |
Symmetry code: (i) −x+3, y+1/2, −z+3/2. |
Experimental details
Crystal data | |
Chemical formula | C19H15N3O4·CH4O |
Mr | 381.38 |
Crystal system, space group | Monoclinic, P21/c |
Temperature (K) | 295 |
a, b, c (Å) | 10.1166 (18), 11.095 (2), 18.510 (3) |
β (°) | 115.896 (7) |
V (Å3) | 1869.0 (6) |
Z | 4 |
Radiation type | Mo Kα |
µ (mm−1) | 0.10 |
Crystal size (mm) | 0.22 × 0.19 × 0.18 |
Data collection | |
Diffractometer | Bruker SMART CCD area-detector diffractometer |
Absorption correction | Multi-scan (SADABS; Sheldrick, 1996) |
Tmin, Tmax | 0.979, 0.982 |
No. of measured, independent and observed [I > 2σ(I)] reflections | 9663, 3302, 1666 |
Rint | 0.046 |
(sin θ/λ)max (Å−1) | 0.596 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.054, 0.161, 1.02 |
No. of reflections | 3302 |
No. of parameters | 255 |
H-atom treatment | H-atom parameters constrained |
Δρmax, Δρmin (e Å−3) | 0.20, −0.20 |
Computer programs: SMART (Siemens, 1996), SAINT (Siemens, 1996), SHELXS97 (Sheldrick, 2008), SHELXL97 (Sheldrick, 2008), SHELXTL (Sheldrick, 2008).
D—H···A | D—H | H···A | D···A | D—H···A |
O3—H3···O2i | 0.82 | 1.88 | 2.695 (3) | 171.3 |
O5—H5···N1 | 0.82 | 1.95 | 2.765 (3) | 170.6 |
N2—H2···O5 | 0.86 | 2.01 | 2.838 (4) | 162.0 |
Symmetry code: (i) −x+3, y+1/2, −z+3/2. |
References
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8-Hydroxyquinoline and its derivatives constitute well known ligands in coordination chemistry (Chen & Shi, 1998). As part of our on going search for good extractants of metal ions or a biologically active material, the title compound was obtained in the reaction of quinolin-8-yloxyacetic acid hydrazide and 4-formylbenzoic acid. In the crystal structure of all bond lengths and angles are normal (Allen et al., 1987), and are comparable to those in the related compound N'-(2-Fluorobenzylidene)-2-(quinolin-8-yloxy)-acetohydrazide methanol solvate (Wen et al., 2005). The mean planes of the benzene ring and the quinoline ring make a dihedral angle of 6.7 (2)°. In the crystal structure, the methanol molecule is linked to the C19H15N3O4 host molecule via intermolecular N—H···O and O—H···N hydrogen bonds (Fig. 1). Intermolecular O—H···O hydrogen bonds (Table 1) fuse the molecules into two-dimensional zig-zag sheets along the a*-b* plane (Fig. 2).