supplementary materials

N'-(2-Hydroxy-5-nitrobenzylidene)-2-(1H-indol-3-yl)acetohydrazide
The molecule of the title compound, C17H14N4O4, uses its amide -NH- group to form a hydrogen bond to the amido -C(=O)- group of an adjacent molecule to furnish a linear chain structure. The hydroxy group forms an intramolecular hydrogen bond; the indolyl -NH- unit does not engage in any strong hydrogen-bonding interactions.
The Schiff base was prepared by refluxing a solution of indole-3-acetic acid
hydrazide (0.34 g, 1.80 mmol) and 5-nitrosalicylaldehyde (0.30 g, 1.80 mmol)
in acidified ethanol (25 ml) for 2 h. On cooling to room temperature, yellow
crystals separated out.
All H-atoms were placed in calculated positions
(C—H 0.95, N—H 0.88, O–H 0.84 Å) and were included in the refinement in
the riding model approximation, with U(H) set to 1.2 to
1.5Ueq(C,N,O).
Data collection: APEX2 (Bruker, 2007); cell refinement: SAINT (Bruker, 2007); data reduction: SAINT (Bruker, 2007); program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: X-SEED (Barbour, 2001); software used to prepare material for publication: publCIF (Westrip, 2008).
N'-(2-Hydroxy-5-nitrobenzylidene)-2-(1
H-indol-3-yl)acetohydrazide
top
Crystal data top
| C17H14N4O4 | F000 = 1408 |
| Mr = 338.32 | Dx = 1.404 Mg m−3 |
| Orthorhombic, Pbca | Mo Kα radiation λ = 0.71073 Å |
| Hall symbol: -P 2ac 2ab | Cell parameters from 3679 reflections |
| a = 9.5387 (2) Å | θ = 2.5–22.2º |
| b = 11.2724 (3) Å | µ = 0.10 mm−1 |
| c = 29.7796 (7) Å | T = 100 (2) K |
| V = 3202.0 (1) Å3 | Irregular block, yellow |
| Z = 8 | 0.30 × 0.25 × 0.20 mm |
Data collection top
Bruker SMART APEX diffractometer | 2059 reflections with I > 2σ(I) |
| Radiation source: fine-focus sealed tube | Rint = 0.053 |
| Monochromator: graphite | θmax = 27.5º |
| T = 100(2) K | θmin = 1.4º |
| ω scans | h = −12→12 |
| Absorption correction: None | k = −14→13 |
| 47721 measured reflections | l = −38→38 |
| 3679 independent reflections | |
Refinement top
| Refinement on F2 | Hydrogen site location: inferred from neighbouring sites |
| Least-squares matrix: full | H-atom parameters constrained |
| R[F2 > 2σ(F2)] = 0.044 | w = 1/[σ2(Fo2) + (0.0885P)2] where P = (Fo2 + 2Fc2)/3 |
| wR(F2) = 0.160 | (Δ/σ)max = 0.001 |
| S = 1.02 | Δρmax = 0.18 e Å−3 |
| 3679 reflections | Δρmin = −0.21 e Å−3 |
| 228 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: 0.007 (1) |
| Secondary atom site location: difference Fourier map | |
Crystal data top
| C17H14N4O4 | V = 3202.0 (1) Å3 |
| Mr = 338.32 | Z = 8 |
| Orthorhombic, Pbca | Mo Kα |
| a = 9.5387 (2) Å | µ = 0.10 mm−1 |
| b = 11.2724 (3) Å | T = 100 (2) K |
| c = 29.7796 (7) Å | 0.30 × 0.25 × 0.20 mm |
Data collection top
Bruker SMART APEX diffractometer | 3679 independent reflections |
| Absorption correction: None | 2059 reflections with I > 2σ(I) |
| 47721 measured reflections | Rint = 0.053 |
Refinement top
| R[F2 > 2σ(F2)] = 0.044 | 228 parameters |
| wR(F2) = 0.160 | H-atom parameters constrained |
| S = 1.02 | Δρmax = 0.18 e Å−3 |
| 3679 reflections | Δρmin = −0.21 e Å−3 |
Special details top
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. |
Fractional atomic coordinates and isotropic or equivalent isotropic displacement parameters (Å2) top| | x | y | z | Uiso*/Ueq | |
| O1 | 0.76143 (16) | 0.34962 (15) | 0.66810 (5) | 0.0747 (5) | |
| H1O | 0.7344 | 0.4058 | 0.6845 | 0.112* | |
| O2 | 0.50825 (18) | 0.27110 (16) | 0.47819 (5) | 0.0896 (6) | |
| O3 | 0.36688 (19) | 0.40496 (16) | 0.50246 (5) | 0.0853 (5) | |
| O4 | 0.78329 (15) | 0.61201 (15) | 0.75230 (5) | 0.0790 (5) | |
| N1 | 0.4670 (2) | 0.33901 (17) | 0.50757 (6) | 0.0647 (5) | |
| N2 | 0.60812 (15) | 0.52866 (14) | 0.69094 (5) | 0.0522 (4) | |
| N3 | 0.56843 (16) | 0.61209 (15) | 0.72184 (5) | 0.0543 (5) | |
| H3N | 0.4821 | 0.6397 | 0.7223 | 0.065* | |
| N4 | 0.79603 (19) | 0.75966 (17) | 0.89103 (6) | 0.0712 (5) | |
| H4N | 0.8598 | 0.7879 | 0.9095 | 0.085* | |
| C1 | 0.6858 (2) | 0.34823 (18) | 0.63004 (7) | 0.0563 (5) | |
| C2 | 0.7229 (2) | 0.26733 (18) | 0.59698 (8) | 0.0651 (6) | |
| H2 | 0.7980 | 0.2137 | 0.6022 | 0.078* | |
| C3 | 0.6523 (2) | 0.26386 (18) | 0.55689 (7) | 0.0625 (6) | |
| H3 | 0.6787 | 0.2090 | 0.5342 | 0.075* | |
| C4 | 0.5426 (2) | 0.34134 (17) | 0.55005 (6) | 0.0538 (5) | |
| C5 | 0.5011 (2) | 0.42048 (16) | 0.58253 (6) | 0.0511 (5) | |
| H5 | 0.4237 | 0.4715 | 0.5772 | 0.061* | |
| C6 | 0.57211 (19) | 0.42584 (16) | 0.62300 (6) | 0.0473 (5) | |
| C7 | 0.53086 (19) | 0.51242 (17) | 0.65658 (6) | 0.0505 (5) | |
| H7 | 0.4468 | 0.5567 | 0.6530 | 0.061* | |
| C8 | 0.6644 (2) | 0.65087 (18) | 0.75150 (6) | 0.0555 (5) | |
| C9 | 0.6133 (2) | 0.7485 (2) | 0.78219 (6) | 0.0643 (6) | |
| H9A | 0.6427 | 0.8262 | 0.7699 | 0.077* | |
| H9B | 0.5095 | 0.7472 | 0.7832 | 0.077* | |
| C10 | 0.6695 (2) | 0.73543 (17) | 0.82885 (6) | 0.0546 (5) | |
| C11 | 0.7735 (2) | 0.7979 (2) | 0.84821 (7) | 0.0684 (6) | |
| H11 | 0.8242 | 0.8600 | 0.8340 | 0.082* | |
| C12 | 0.62245 (19) | 0.65262 (16) | 0.86168 (7) | 0.0514 (5) | |
| C13 | 0.5173 (2) | 0.56695 (18) | 0.86298 (8) | 0.0626 (6) | |
| H13 | 0.4599 | 0.5530 | 0.8374 | 0.075* | |
| C14 | 0.4978 (3) | 0.50326 (19) | 0.90151 (9) | 0.0745 (7) | |
| H14 | 0.4262 | 0.4447 | 0.9024 | 0.089* | |
| C15 | 0.5803 (3) | 0.5221 (2) | 0.93952 (8) | 0.0753 (7) | |
| H15 | 0.5640 | 0.4760 | 0.9657 | 0.090* | |
| C16 | 0.6847 (2) | 0.6062 (2) | 0.93974 (7) | 0.0667 (6) | |
| H16 | 0.7411 | 0.6194 | 0.9655 | 0.080* | |
| C17 | 0.7037 (2) | 0.67047 (18) | 0.90073 (7) | 0.0561 (5) | |
Atomic displacement parameters (Å2) top| | U11 | U22 | U33 | U12 | U13 | U23 |
| O1 | 0.0634 (10) | 0.0901 (11) | 0.0707 (10) | 0.0201 (8) | −0.0089 (8) | 0.0030 (8) |
| O2 | 0.0991 (14) | 0.1023 (13) | 0.0672 (11) | −0.0122 (10) | 0.0139 (9) | −0.0333 (10) |
| O3 | 0.0835 (12) | 0.0954 (12) | 0.0771 (11) | 0.0045 (10) | −0.0245 (9) | −0.0215 (9) |
| O4 | 0.0393 (9) | 0.1232 (13) | 0.0745 (11) | 0.0156 (8) | −0.0106 (7) | −0.0360 (9) |
| N1 | 0.0663 (12) | 0.0712 (12) | 0.0566 (11) | −0.0201 (10) | 0.0062 (9) | −0.0134 (10) |
| N2 | 0.0406 (9) | 0.0683 (10) | 0.0477 (9) | −0.0033 (8) | 0.0012 (7) | −0.0058 (8) |
| N3 | 0.0360 (8) | 0.0762 (11) | 0.0507 (10) | 0.0042 (8) | 0.0002 (7) | −0.0134 (8) |
| N4 | 0.0664 (12) | 0.0860 (13) | 0.0612 (11) | −0.0182 (10) | −0.0085 (9) | −0.0171 (10) |
| C1 | 0.0460 (11) | 0.0607 (12) | 0.0623 (13) | −0.0011 (9) | 0.0046 (10) | 0.0044 (10) |
| C2 | 0.0548 (13) | 0.0590 (13) | 0.0814 (16) | 0.0065 (10) | 0.0103 (12) | 0.0004 (11) |
| C3 | 0.0592 (14) | 0.0557 (12) | 0.0724 (15) | −0.0079 (10) | 0.0201 (12) | −0.0112 (10) |
| C4 | 0.0512 (12) | 0.0533 (11) | 0.0568 (12) | −0.0139 (9) | 0.0058 (10) | −0.0048 (9) |
| C5 | 0.0460 (11) | 0.0536 (11) | 0.0536 (11) | −0.0039 (9) | 0.0030 (8) | −0.0029 (9) |
| C6 | 0.0409 (10) | 0.0498 (10) | 0.0513 (11) | −0.0052 (8) | 0.0050 (8) | 0.0011 (9) |
| C7 | 0.0416 (11) | 0.0583 (11) | 0.0515 (11) | −0.0014 (9) | 0.0018 (9) | −0.0006 (9) |
| C8 | 0.0428 (12) | 0.0750 (13) | 0.0488 (11) | 0.0012 (10) | −0.0009 (9) | −0.0068 (10) |
| C9 | 0.0573 (13) | 0.0742 (14) | 0.0613 (13) | 0.0078 (11) | −0.0020 (10) | −0.0119 (11) |
| C10 | 0.0496 (12) | 0.0617 (12) | 0.0524 (11) | −0.0006 (9) | 0.0004 (9) | −0.0154 (9) |
| C11 | 0.0671 (15) | 0.0730 (14) | 0.0650 (14) | −0.0150 (12) | 0.0039 (11) | −0.0092 (11) |
| C12 | 0.0443 (11) | 0.0532 (11) | 0.0568 (12) | 0.0047 (9) | 0.0009 (9) | −0.0189 (9) |
| C13 | 0.0534 (13) | 0.0564 (12) | 0.0781 (15) | −0.0004 (10) | −0.0012 (11) | −0.0154 (11) |
| C14 | 0.0665 (15) | 0.0541 (12) | 0.103 (2) | −0.0025 (11) | 0.0122 (14) | −0.0064 (13) |
| C15 | 0.0858 (18) | 0.0594 (13) | 0.0808 (17) | 0.0180 (13) | 0.0207 (14) | 0.0039 (12) |
| C16 | 0.0717 (15) | 0.0718 (14) | 0.0566 (13) | 0.0192 (13) | −0.0007 (11) | −0.0090 (11) |
| C17 | 0.0523 (12) | 0.0578 (12) | 0.0583 (12) | 0.0059 (10) | 0.0013 (10) | −0.0171 (10) |
Geometric parameters (Å, °) top
| O1—C1 | 1.344 (2) | C5—H5 | 0.9500 |
| O1—H1O | 0.8400 | C6—C7 | 1.452 (3) |
| O2—N1 | 1.227 (2) | C7—H7 | 0.9500 |
| O3—N1 | 1.220 (2) | C8—C9 | 1.512 (3) |
| O4—C8 | 1.216 (2) | C9—C10 | 1.497 (3) |
| N1—C4 | 1.456 (3) | C9—H9A | 0.9900 |
| N2—C7 | 1.274 (2) | C9—H9B | 0.9900 |
| N2—N3 | 1.369 (2) | C10—C11 | 1.347 (3) |
| N3—C8 | 1.345 (2) | C10—C12 | 1.424 (3) |
| N3—H3N | 0.8800 | C11—H11 | 0.9500 |
| N4—C11 | 1.363 (3) | C12—C13 | 1.393 (3) |
| N4—C17 | 1.367 (3) | C12—C17 | 1.412 (3) |
| N4—H4N | 0.8800 | C13—C14 | 1.366 (3) |
| C1—C2 | 1.388 (3) | C13—H13 | 0.9500 |
| C1—C6 | 1.409 (3) | C14—C15 | 1.395 (3) |
| C2—C3 | 1.371 (3) | C14—H14 | 0.9500 |
| C2—H2 | 0.9500 | C15—C16 | 1.375 (3) |
| C3—C4 | 1.378 (3) | C15—H15 | 0.9500 |
| C3—H3 | 0.9500 | C16—C17 | 1.381 (3) |
| C4—C5 | 1.374 (3) | C16—H16 | 0.9500 |
| C5—C6 | 1.384 (3) | | |
| | | |
| C1—O1—H1O | 109.5 | O4—C8—C9 | 123.48 (18) |
| O3—N1—O2 | 122.85 (19) | N3—C8—C9 | 114.46 (18) |
| O3—N1—C4 | 119.01 (18) | C10—C9—C8 | 111.95 (17) |
| O2—N1—C4 | 118.1 (2) | C10—C9—H9A | 109.2 |
| C7—N2—N3 | 118.59 (16) | C8—C9—H9A | 109.2 |
| C8—N3—N2 | 118.45 (16) | C10—C9—H9B | 109.2 |
| C8—N3—H3N | 120.8 | C8—C9—H9B | 109.2 |
| N2—N3—H3N | 120.8 | H9A—C9—H9B | 107.9 |
| C11—N4—C17 | 109.21 (17) | C11—C10—C12 | 106.33 (18) |
| C11—N4—H4N | 125.4 | C11—C10—C9 | 127.6 (2) |
| C17—N4—H4N | 125.4 | C12—C10—C9 | 126.11 (18) |
| O1—C1—C2 | 117.97 (19) | C10—C11—N4 | 110.5 (2) |
| O1—C1—C6 | 122.12 (18) | C10—C11—H11 | 124.7 |
| C2—C1—C6 | 119.91 (19) | N4—C11—H11 | 124.7 |
| C3—C2—C1 | 120.8 (2) | C13—C12—C17 | 118.12 (19) |
| C3—C2—H2 | 119.6 | C13—C12—C10 | 134.45 (19) |
| C1—C2—H2 | 119.6 | C17—C12—C10 | 107.40 (17) |
| C2—C3—C4 | 118.89 (19) | C14—C13—C12 | 119.1 (2) |
| C2—C3—H3 | 120.6 | C14—C13—H13 | 120.5 |
| C4—C3—H3 | 120.6 | C12—C13—H13 | 120.5 |
| C5—C4—C3 | 121.73 (19) | C13—C14—C15 | 121.7 (2) |
| C5—C4—N1 | 118.73 (19) | C13—C14—H14 | 119.2 |
| C3—C4—N1 | 119.54 (18) | C15—C14—H14 | 119.2 |
| C4—C5—C6 | 120.04 (18) | C16—C15—C14 | 121.2 (2) |
| C4—C5—H5 | 120.0 | C16—C15—H15 | 119.4 |
| C6—C5—H5 | 120.0 | C14—C15—H15 | 119.4 |
| C5—C6—C1 | 118.63 (17) | C15—C16—C17 | 116.9 (2) |
| C5—C6—C7 | 119.78 (17) | C15—C16—H16 | 121.5 |
| C1—C6—C7 | 121.58 (18) | C17—C16—H16 | 121.5 |
| N2—C7—C6 | 119.53 (17) | N4—C17—C16 | 130.4 (2) |
| N2—C7—H7 | 120.2 | N4—C17—C12 | 106.52 (18) |
| C6—C7—H7 | 120.2 | C16—C17—C12 | 123.1 (2) |
| O4—C8—N3 | 122.03 (18) | | |
| | | |
| C7—N2—N3—C8 | −163.35 (18) | N3—C8—C9—C10 | 142.14 (19) |
| O1—C1—C2—C3 | −178.10 (19) | C8—C9—C10—C11 | 103.7 (2) |
| C6—C1—C2—C3 | 1.7 (3) | C8—C9—C10—C12 | −76.0 (3) |
| C1—C2—C3—C4 | −0.7 (3) | C12—C10—C11—N4 | 0.4 (2) |
| C2—C3—C4—C5 | −0.9 (3) | C9—C10—C11—N4 | −179.39 (19) |
| C2—C3—C4—N1 | 179.78 (17) | C17—N4—C11—C10 | −0.8 (2) |
| O3—N1—C4—C5 | −1.9 (3) | C11—C10—C12—C13 | 177.9 (2) |
| O2—N1—C4—C5 | 177.32 (17) | C9—C10—C12—C13 | −2.4 (3) |
| O3—N1—C4—C3 | 177.38 (18) | C11—C10—C12—C17 | 0.1 (2) |
| O2—N1—C4—C3 | −3.4 (3) | C9—C10—C12—C17 | 179.90 (18) |
| C3—C4—C5—C6 | 1.6 (3) | C17—C12—C13—C14 | −0.6 (3) |
| N1—C4—C5—C6 | −179.14 (16) | C10—C12—C13—C14 | −178.1 (2) |
| C4—C5—C6—C1 | −0.5 (3) | C12—C13—C14—C15 | 0.1 (3) |
| C4—C5—C6—C7 | 177.88 (16) | C13—C14—C15—C16 | 0.2 (3) |
| O1—C1—C6—C5 | 178.74 (17) | C14—C15—C16—C17 | −0.1 (3) |
| C2—C1—C6—C5 | −1.0 (3) | C11—N4—C17—C16 | −178.7 (2) |
| O1—C1—C6—C7 | 0.3 (3) | C11—N4—C17—C12 | 0.8 (2) |
| C2—C1—C6—C7 | −179.43 (17) | C15—C16—C17—N4 | 179.0 (2) |
| N3—N2—C7—C6 | 178.97 (15) | C15—C16—C17—C12 | −0.4 (3) |
| C5—C6—C7—N2 | −170.09 (17) | C13—C12—C17—N4 | −178.75 (16) |
| C1—C6—C7—N2 | 8.3 (3) | C10—C12—C17—N4 | −0.6 (2) |
| N2—N3—C8—O4 | −1.8 (3) | C13—C12—C17—C16 | 0.8 (3) |
| N2—N3—C8—C9 | 176.17 (17) | C10—C12—C17—C16 | 178.93 (18) |
| O4—C8—C9—C10 | −39.9 (3) | | |
Hydrogen-bond geometry (Å, °) top
| D—H···A | D—H | H···A | D···A | D—H···A |
| O1—H1o···N2 | 0.84 | 1.85 | 2.583 (2) | 146 |
| N3—H3n···O4i | 0.88 | 2.07 | 2.827 (2) | 144 |
| N4—H4n···O2ii | 0.88 | 2.49 | 3.216 (2) | 140 |
| Symmetry codes: (i) x−1/2, y, −z+3/2; (ii) −x+3/2, −y+1, z+1/2. |
Table 1
Hydrogen-bond geometry (Å, °) top
| D—H···A | D—H | H···A | D···A | D—H···A |
| O1—H1o···N2 | 0.84 | 1.85 | 2.583 (2) | 146 |
| N3—H3n···O4i | 0.88 | 2.07 | 2.827 (2) | 144 |
| Symmetry codes: (i) x−1/2, y, −z+3/2. |
We thank the Science Fund (12–02-03–2031, 12–02-03–2051) and the University
of Malaya (PJP) for supporting this study. We are grateful to the University
of Malaya for the purchase of the diffractometer.
Barbour, L. J. (2001). J. Supramol. Chem. 1, 189–191.
Bruker (2007). APEX2 and SAINT. Bruker AXS Inc., Madison, Wisconsin, USA.
Martin Reyes, M. G., Gili, P., Zarza, P. M., Medina Ortega, A. & Diaz Gonzalez, M. C. (1986). Inorg. Chim. Acta, 116, 153–156.
Martin Zarza, P., Gili, P., Mederos, A. & Medina, A. (1989). Thermochim. Acta, 156, 231–238.
Sheldrick, G. M. (2008). Acta Cryst. A64, 112–122.
Westrip, S. P. (2008). publCIF. In preparation.
There are many examples of Schiff bases derived from the condensation of salicylaldehyde and substituted salicyldehydes with hydrazides such as the ones reported by Martin Reyes et al. (1986) and Martin Zarza et al. (1989). The title compound (Fig. 1) is another example. The molecule uses its amido –NH– group to form a hydrogen bond to the amido –C(=O)– group of an adjacent molecule to furnish a linear chain structure.