supplementary materials
N'-[1-(4-Nitrophenyl)ethylidene]acetohydrazide
The title compound, C10H11N3O3, was prepared by the reaction of acetohydrazide and 1-(4-nitrophenyl)ethanone. The asymmetric unit contains two crystallographically independent molecules. Inversion-related molecules form dimers, in which two N-H
O hydrogen bonds generate an intermolecular R22(8) ring.
A mixture of the acetohydrazide (0.1 mol), and 1-(4-nitrophenyl)ethanone (0.1 mol) was stirred in refluxing ethanol (20 mL) for 4 h to afford the title
compound (0.086 mol, yield 86%). Single crystals suitable for X-ray
measurements were obtained by recrystallization from ethanol at room
temperature.
N-bonded H atoms were found from a difference Fourier map and refined freely.
C-bonded H atoms were fixed geometrically and allowed to ride on their
attached atoms, with C—H = 0.93-0.96 Å, and with
Uiso=1.2–1.5Ueq.
Data collection: SMART (Bruker, 1997); cell refinement: SAINT (Bruker, 1997); data reduction: SAINT (Bruker, 1997); 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).
N'-[1-(4-Nitrophenyl)ethylidene]acetohydrazide
top
Crystal data top
| C10H11N3O3 | Z = 4 |
| Mr = 221.22 | F(000) = 464 |
| Triclinic, P1 | Dx = 1.347 Mg m−3 |
| Hall symbol: -P 1 | Mo Kα radiation, λ = 0.71073 Å |
| a = 8.4453 (17) Å | Cell parameters from 1553 reflections |
| b = 9.5438 (19) Å | θ = 2.9–23.0° |
| c = 14.820 (3) Å | µ = 0.10 mm−1 |
| α = 72.66 (3)° | T = 293 K |
| β = 77.37 (3)° | Block, yellow |
| γ = 75.59 (3)° | 0.25 × 0.20 × 0.18 mm |
| V = 1090.7 (4) Å3 | |
Data collection top
Bruker SMART CCD area-detector diffractometer | 2570 reflections with I > 2σ(I) |
| Radiation source: fine-focus sealed tube | Rint = 0.027 |
| graphite | θmax = 25.5°, θmin = 2.3° |
| φ and ω scans | h = −10→10 |
| 6035 measured reflections | k = −8→11 |
| 4037 independent reflections | l = −17→17 |
Refinement top
| 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)] = 0.052 | Hydrogen site location: inferred from neighbouring sites |
| wR(F2) = 0.159 | H atoms treated by a mixture of independent and constrained refinement |
| S = 1.04 | w = 1/[σ2(Fo2) + (0.0784P)2 + 0.1468P] where P = (Fo2 + 2Fc2)/3 |
| 4037 reflections | (Δ/σ)max < 0.001 |
| 297 parameters | Δρmax = 0.22 e Å−3 |
| 0 restraints | Δρmin = −0.21 e Å−3 |
Crystal data top
| C10H11N3O3 | γ = 75.59 (3)° |
| Mr = 221.22 | V = 1090.7 (4) Å3 |
| Triclinic, P1 | Z = 4 |
| a = 8.4453 (17) Å | Mo Kα radiation |
| b = 9.5438 (19) Å | µ = 0.10 mm−1 |
| c = 14.820 (3) Å | T = 293 K |
| α = 72.66 (3)° | 0.25 × 0.20 × 0.18 mm |
| β = 77.37 (3)° | |
Data collection top
Bruker SMART CCD area-detector diffractometer | 2570 reflections with I > 2σ(I) |
| 6035 measured reflections | Rint = 0.027 |
| 4037 independent reflections | θmax = 25.5° |
Refinement top
| R[F2 > 2σ(F2)] = 0.052 | H atoms treated by a mixture of independent and constrained refinement |
| wR(F2) = 0.159 | Δρmax = 0.22 e Å−3 |
| S = 1.04 | Δρmin = −0.21 e Å−3 |
| 4037 reflections | Absolute structure: ? |
| 297 parameters | Flack parameter: ? |
| 0 restraints | Rogers parameter: ? |
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. |
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. |
Fractional atomic coordinates and isotropic or equivalent isotropic displacement parameters (Å2) top| | x | y | z | Uiso*/Ueq | |
| N5 | 0.6357 (2) | 0.18317 (19) | 0.43057 (12) | 0.0478 (4) | |
| N4 | 0.6040 (2) | 0.3087 (2) | 0.46328 (13) | 0.0517 (5) | |
| C20 | 0.7190 (3) | −0.0804 (3) | 0.37732 (16) | 0.0553 (6) | |
| H20A | 0.7913 | −0.0577 | 0.4076 | 0.066* | |
| O4 | 0.6882 (2) | 0.4455 (2) | 0.53613 (14) | 0.0762 (6) | |
| C13 | 0.5290 (2) | 0.1642 (2) | 0.38741 (14) | 0.0463 (5) | |
| C15 | 0.5727 (3) | 0.0223 (2) | 0.35793 (14) | 0.0458 (5) | |
| C18 | 0.6510 (3) | −0.2475 (3) | 0.30826 (16) | 0.0540 (6) | |
| C19 | 0.7587 (3) | −0.2144 (3) | 0.35260 (17) | 0.0585 (6) | |
| H19A | 0.8567 | −0.2814 | 0.3657 | 0.070* | |
| C16 | 0.4685 (3) | −0.0151 (3) | 0.31179 (16) | 0.0574 (6) | |
| H16A | 0.3708 | 0.0516 | 0.2975 | 0.069* | |
| N6 | 0.6913 (3) | −0.3924 (2) | 0.28399 (15) | 0.0688 (6) | |
| C12 | 0.7182 (3) | 0.3345 (3) | 0.50456 (18) | 0.0597 (6) | |
| O6 | 0.5902 (3) | −0.4215 (2) | 0.24812 (16) | 0.0985 (7) | |
| O5 | 0.8220 (3) | −0.4769 (2) | 0.30177 (14) | 0.0845 (6) | |
| C14 | 0.3713 (3) | 0.2712 (3) | 0.36615 (19) | 0.0659 (7) | |
| H14A | 0.3614 | 0.3568 | 0.3898 | 0.099* | |
| H14B | 0.2794 | 0.2229 | 0.3967 | 0.099* | |
| H14C | 0.3719 | 0.3028 | 0.2982 | 0.099* | |
| C17 | 0.5074 (3) | −0.1501 (3) | 0.28661 (17) | 0.0629 (6) | |
| H17A | 0.4370 | −0.1738 | 0.2556 | 0.076* | |
| N2 | 0.3467 (2) | 0.3952 (2) | 0.09154 (13) | 0.0517 (5) | |
| O1 | −0.0396 (2) | 0.6256 (2) | 0.07168 (13) | 0.0729 (5) | |
| N1 | 0.1929 (2) | 0.4531 (2) | 0.06573 (15) | 0.0559 (5) | |
| C10 | 0.6576 (3) | 0.3176 (2) | 0.14039 (15) | 0.0505 (5) | |
| H10A | 0.5893 | 0.4061 | 0.1507 | 0.061* | |
| C3 | 0.4436 (3) | 0.2916 (2) | 0.05675 (15) | 0.0497 (5) | |
| C8 | 0.9053 (3) | 0.1382 (3) | 0.15882 (16) | 0.0537 (6) | |
| C5 | 0.6075 (3) | 0.2378 (2) | 0.09008 (15) | 0.0468 (5) | |
| C6 | 0.7135 (3) | 0.1075 (3) | 0.07434 (17) | 0.0601 (6) | |
| H6A | 0.6834 | 0.0534 | 0.0402 | 0.072* | |
| C9 | 0.8052 (3) | 0.2683 (2) | 0.17494 (16) | 0.0532 (6) | |
| H9A | 0.8369 | 0.3222 | 0.2087 | 0.064* | |
| C7 | 0.8626 (3) | 0.0568 (3) | 0.10851 (18) | 0.0640 (7) | |
| H7A | 0.9327 | −0.0307 | 0.0977 | 0.077* | |
| C2 | 0.0951 (3) | 0.5678 (3) | 0.09904 (17) | 0.0555 (6) | |
| N3 | 1.0610 (3) | 0.0837 (3) | 0.19712 (18) | 0.0759 (6) | |
| C1 | 0.1551 (3) | 0.6207 (3) | 0.16819 (19) | 0.0722 (7) | |
| H1B | 0.0741 | 0.7025 | 0.1856 | 0.108* | |
| H1C | 0.2574 | 0.6534 | 0.1390 | 0.108* | |
| H1D | 0.1724 | 0.5402 | 0.2244 | 0.108* | |
| C4 | 0.4032 (3) | 0.2229 (3) | −0.0121 (2) | 0.0814 (9) | |
| H4B | 0.2938 | 0.2695 | −0.0264 | 0.122* | |
| H4C | 0.4084 | 0.1176 | 0.0160 | 0.122* | |
| H4D | 0.4816 | 0.2376 | −0.0701 | 0.122* | |
| O3 | 1.0875 (3) | 0.1457 (3) | 0.2518 (2) | 0.1159 (9) | |
| O2 | 1.1593 (3) | −0.0208 (3) | 0.1728 (2) | 0.1231 (10) | |
| C11 | 0.8785 (3) | 0.2256 (3) | 0.5105 (3) | 0.0922 (10) | |
| H11A | 0.9474 | 0.2574 | 0.5410 | 0.138* | |
| H11B | 0.9331 | 0.2208 | 0.4471 | 0.138* | |
| H11C | 0.8582 | 0.1285 | 0.5470 | 0.138* | |
| H4A | 0.513 (3) | 0.378 (3) | 0.4600 (17) | 0.071 (8)* | |
| H1A | 0.162 (3) | 0.426 (3) | 0.0248 (17) | 0.054 (7)* | |
Atomic displacement parameters (Å2) top| | U11 | U22 | U33 | U12 | U13 | U23 |
| N5 | 0.0487 (10) | 0.0441 (10) | 0.0552 (10) | −0.0028 (8) | −0.0128 (8) | −0.0215 (8) |
| N4 | 0.0477 (11) | 0.0475 (11) | 0.0665 (12) | 0.0030 (9) | −0.0180 (9) | −0.0281 (9) |
| C20 | 0.0533 (13) | 0.0543 (14) | 0.0685 (15) | −0.0050 (11) | −0.0214 (11) | −0.0269 (12) |
| O4 | 0.0687 (11) | 0.0712 (12) | 0.1096 (14) | 0.0064 (9) | −0.0348 (10) | −0.0562 (11) |
| C13 | 0.0445 (11) | 0.0492 (13) | 0.0455 (11) | −0.0056 (10) | −0.0105 (9) | −0.0132 (10) |
| C15 | 0.0492 (12) | 0.0451 (12) | 0.0441 (11) | −0.0079 (10) | −0.0100 (9) | −0.0122 (9) |
| C18 | 0.0669 (15) | 0.0476 (13) | 0.0536 (13) | −0.0128 (11) | −0.0091 (11) | −0.0209 (10) |
| C19 | 0.0583 (14) | 0.0495 (14) | 0.0731 (15) | −0.0017 (11) | −0.0171 (12) | −0.0262 (12) |
| C16 | 0.0570 (13) | 0.0577 (14) | 0.0645 (14) | −0.0059 (11) | −0.0239 (11) | −0.0204 (12) |
| N6 | 0.0906 (17) | 0.0570 (14) | 0.0680 (13) | −0.0219 (13) | −0.0070 (12) | −0.0275 (11) |
| C12 | 0.0513 (13) | 0.0621 (15) | 0.0749 (16) | 0.0020 (11) | −0.0226 (12) | −0.0328 (13) |
| O6 | 0.1239 (17) | 0.0867 (15) | 0.1170 (17) | −0.0298 (13) | −0.0324 (14) | −0.0567 (13) |
| O5 | 0.0999 (16) | 0.0583 (12) | 0.0976 (15) | −0.0030 (11) | −0.0112 (12) | −0.0367 (11) |
| C14 | 0.0587 (15) | 0.0656 (16) | 0.0808 (17) | 0.0078 (12) | −0.0275 (13) | −0.0345 (13) |
| C17 | 0.0732 (16) | 0.0644 (16) | 0.0653 (15) | −0.0189 (13) | −0.0224 (13) | −0.0250 (13) |
| N2 | 0.0469 (10) | 0.0518 (11) | 0.0593 (11) | −0.0039 (9) | −0.0174 (9) | −0.0169 (9) |
| O1 | 0.0565 (10) | 0.0775 (12) | 0.0890 (12) | 0.0072 (9) | −0.0307 (9) | −0.0306 (10) |
| N1 | 0.0523 (11) | 0.0576 (12) | 0.0642 (12) | −0.0025 (9) | −0.0227 (10) | −0.0222 (10) |
| C10 | 0.0500 (13) | 0.0439 (12) | 0.0622 (13) | −0.0045 (10) | −0.0143 (10) | −0.0204 (10) |
| C3 | 0.0524 (13) | 0.0453 (13) | 0.0557 (13) | −0.0062 (10) | −0.0169 (10) | −0.0164 (10) |
| C8 | 0.0481 (12) | 0.0546 (14) | 0.0582 (13) | −0.0047 (11) | −0.0146 (10) | −0.0141 (11) |
| C5 | 0.0485 (12) | 0.0460 (12) | 0.0483 (12) | −0.0071 (10) | −0.0115 (9) | −0.0148 (10) |
| C6 | 0.0635 (15) | 0.0550 (14) | 0.0718 (15) | 0.0016 (12) | −0.0231 (12) | −0.0330 (12) |
| C9 | 0.0518 (13) | 0.0522 (14) | 0.0634 (14) | −0.0092 (11) | −0.0140 (11) | −0.0237 (11) |
| C7 | 0.0594 (15) | 0.0549 (15) | 0.0794 (17) | 0.0070 (12) | −0.0170 (12) | −0.0305 (13) |
| C2 | 0.0506 (13) | 0.0542 (14) | 0.0624 (14) | −0.0043 (11) | −0.0173 (11) | −0.0148 (11) |
| N3 | 0.0552 (13) | 0.0743 (16) | 0.1008 (18) | 0.0038 (12) | −0.0305 (12) | −0.0271 (13) |
| C1 | 0.0635 (15) | 0.0743 (18) | 0.0880 (19) | 0.0043 (13) | −0.0270 (14) | −0.0383 (15) |
| C4 | 0.0746 (18) | 0.087 (2) | 0.105 (2) | 0.0091 (15) | −0.0418 (16) | −0.0579 (18) |
| O3 | 0.0844 (15) | 0.132 (2) | 0.159 (2) | 0.0139 (14) | −0.0718 (15) | −0.0699 (18) |
| O2 | 0.0765 (14) | 0.1116 (19) | 0.196 (3) | 0.0364 (14) | −0.0630 (16) | −0.0769 (19) |
| C11 | 0.0635 (17) | 0.089 (2) | 0.148 (3) | 0.0211 (15) | −0.0522 (18) | −0.070 (2) |
Geometric parameters (Å, °) top
| N5—C13 | 1.287 (3) | N1—C2 | 1.349 (3) |
| N5—N4 | 1.368 (2) | N1—H1A | 0.83 (2) |
| N4—C12 | 1.353 (3) | C10—C9 | 1.372 (3) |
| N4—H4A | 0.88 (3) | C10—C5 | 1.397 (3) |
| C20—C19 | 1.376 (3) | C10—H10A | 0.9300 |
| C20—C15 | 1.398 (3) | C3—C5 | 1.489 (3) |
| C20—H20A | 0.9300 | C3—C4 | 1.500 (3) |
| O4—C12 | 1.231 (3) | C8—C9 | 1.371 (3) |
| C13—C15 | 1.481 (3) | C8—C7 | 1.376 (3) |
| C13—C14 | 1.493 (3) | C8—N3 | 1.460 (3) |
| C15—C16 | 1.391 (3) | C5—C6 | 1.389 (3) |
| C18—C17 | 1.367 (3) | C6—C7 | 1.380 (3) |
| C18—C19 | 1.374 (3) | C6—H6A | 0.9300 |
| C18—N6 | 1.472 (3) | C9—H9A | 0.9300 |
| C19—H19A | 0.9300 | C7—H7A | 0.9300 |
| C16—C17 | 1.389 (3) | C2—C1 | 1.492 (3) |
| C16—H16A | 0.9300 | N3—O2 | 1.218 (3) |
| N6—O6 | 1.222 (3) | N3—O3 | 1.219 (3) |
| N6—O5 | 1.223 (3) | C1—H1B | 0.9600 |
| C12—C11 | 1.489 (3) | C1—H1C | 0.9600 |
| C14—H14A | 0.9600 | C1—H1D | 0.9600 |
| C14—H14B | 0.9600 | C4—H4B | 0.9600 |
| C14—H14C | 0.9600 | C4—H4C | 0.9600 |
| C17—H17A | 0.9300 | C4—H4D | 0.9600 |
| N2—C3 | 1.277 (3) | C11—H11A | 0.9600 |
| N2—N1 | 1.368 (3) | C11—H11B | 0.9600 |
| O1—C2 | 1.232 (3) | C11—H11C | 0.9600 |
| | | |
| C13—N5—N4 | 119.06 (18) | C5—C10—H10A | 119.3 |
| C12—N4—N5 | 119.98 (19) | N2—C3—C5 | 115.09 (19) |
| C12—N4—H4A | 114.2 (17) | N2—C3—C4 | 125.2 (2) |
| N5—N4—H4A | 125.8 (17) | C5—C3—C4 | 119.7 (2) |
| C19—C20—C15 | 121.5 (2) | C9—C8—C7 | 122.0 (2) |
| C19—C20—H20A | 119.2 | C9—C8—N3 | 118.9 (2) |
| C15—C20—H20A | 119.2 | C7—C8—N3 | 119.1 (2) |
| N5—C13—C15 | 114.65 (18) | C6—C5—C10 | 117.9 (2) |
| N5—C13—C14 | 125.5 (2) | C6—C5—C3 | 122.1 (2) |
| C15—C13—C14 | 119.81 (19) | C10—C5—C3 | 120.00 (19) |
| C16—C15—C20 | 117.6 (2) | C7—C6—C5 | 121.2 (2) |
| C16—C15—C13 | 121.3 (2) | C7—C6—H6A | 119.4 |
| C20—C15—C13 | 121.07 (18) | C5—C6—H6A | 119.4 |
| C17—C18—C19 | 121.9 (2) | C8—C9—C10 | 118.8 (2) |
| C17—C18—N6 | 119.2 (2) | C8—C9—H9A | 120.6 |
| C19—C18—N6 | 118.9 (2) | C10—C9—H9A | 120.6 |
| C18—C19—C20 | 118.9 (2) | C8—C7—C6 | 118.7 (2) |
| C18—C19—H19A | 120.6 | C8—C7—H7A | 120.7 |
| C20—C19—H19A | 120.6 | C6—C7—H7A | 120.7 |
| C17—C16—C15 | 121.3 (2) | O1—C2—N1 | 119.6 (2) |
| C17—C16—H16A | 119.4 | O1—C2—C1 | 122.2 (2) |
| C15—C16—H16A | 119.4 | N1—C2—C1 | 118.3 (2) |
| O6—N6—O5 | 123.9 (2) | O2—N3—O3 | 122.8 (2) |
| O6—N6—C18 | 117.5 (2) | O2—N3—C8 | 118.8 (2) |
| O5—N6—C18 | 118.5 (2) | O3—N3—C8 | 118.4 (2) |
| O4—C12—N4 | 120.0 (2) | C2—C1—H1B | 109.5 |
| O4—C12—C11 | 121.8 (2) | C2—C1—H1C | 109.5 |
| N4—C12—C11 | 118.2 (2) | H1B—C1—H1C | 109.5 |
| C13—C14—H14A | 109.5 | C2—C1—H1D | 109.5 |
| C13—C14—H14B | 109.5 | H1B—C1—H1D | 109.5 |
| H14A—C14—H14B | 109.5 | H1C—C1—H1D | 109.5 |
| C13—C14—H14C | 109.5 | C3—C4—H4B | 109.5 |
| H14A—C14—H14C | 109.5 | C3—C4—H4C | 109.5 |
| H14B—C14—H14C | 109.5 | H4B—C4—H4C | 109.5 |
| C18—C17—C16 | 118.8 (2) | C3—C4—H4D | 109.5 |
| C18—C17—H17A | 120.6 | H4B—C4—H4D | 109.5 |
| C16—C17—H17A | 120.6 | H4C—C4—H4D | 109.5 |
| C3—N2—N1 | 120.00 (19) | C12—C11—H11A | 109.5 |
| C2—N1—N2 | 119.4 (2) | C12—C11—H11B | 109.5 |
| C2—N1—H1A | 118.7 (16) | H11A—C11—H11B | 109.5 |
| N2—N1—H1A | 121.5 (16) | C12—C11—H11C | 109.5 |
| C9—C10—C5 | 121.4 (2) | H11A—C11—H11C | 109.5 |
| C9—C10—H10A | 119.3 | H11B—C11—H11C | 109.5 |
Hydrogen-bond geometry (Å, °) top
| D—H···A | D—H | H···A | D···A | D—H···A |
| N1—H1A···O1i | 0.84 (3) | 2.16 (3) | 2.989 (3) | 170 (2) |
| N4—H4A···O4ii | 0.88 (3) | 2.08 (3) | 2.952 (3) | 172 (2) |
| C4—H4B···N1 | 0.96 | 2.42 | 2.826 (3) | 105 |
| C4—H4B···O1i | 0.96 | 2.28 | 3.243 (3) | 175 |
| C10—H10A···O6iii | 0.93 | 2.49 | 3.216 (3) | 135 |
| C14—H14A···N4 | 0.96 | 2.41 | 2.821 (3) | 105 |
| C14—H14A···O4ii | 0.96 | 2.36 | 3.317 (3) | 173 |
| C16—H16A···O3iv | 0.93 | 2.50 | 3.388 (4) | 159 |
| C20—H20A···N5 | 0.93 | 2.43 | 2.740 (3) | 100 |
| Symmetry codes: (i) −x, −y+1, −z; (ii) −x+1, −y+1, −z+1; (iii) x, y+1, z; (iv) x−1, y, z. |
Table 1
Hydrogen-bond geometry (Å, °) top
| D—H···A | D—H | H···A | D···A | D—H···A |
| N1—H1A···O1i | 0.84 (3) | 2.16 (3) | 2.989 (3) | 170 (2) |
| N4—H4A···O4ii | 0.88 (3) | 2.08 (3) | 2.952 (3) | 172 (2) |
| C4—H4B···N1 | 0.96 | 2.42 | 2.826 (3) | 105 |
| C4—H4B···O1i | 0.96 | 2.28 | 3.243 (3) | 175 |
| C10—H10A···O6iii | 0.93 | 2.49 | 3.216 (3) | 135 |
| C14—H14A···N4 | 0.96 | 2.41 | 2.821 (3) | 105 |
| C14—H14A···O4ii | 0.96 | 2.36 | 3.317 (3) | 173 |
| C16—H16A···O3iv | 0.93 | 2.50 | 3.388 (4) | 159 |
| C20—H20A···N5 | 0.93 | 2.43 | 2.740 (3) | 100 |
| Symmetry codes: (i) −x, −y+1, −z; (ii) −x+1, −y+1, −z+1; (iii) x, y+1, z; (iv) x−1, y, z. |
Bruker (1997). SMART and SAINT. Bruker AXS Inc., Madison, Wisconsin, USA.
Cimerman, Z., Galic, N. & Bosner, B. (1997). Anal. Chim. Acta, 343, 145–153.
Girgis, A. S. (2006). J. Chem. Res. pp. 81–85.
Sheldrick, G. M. (2008). Acta Cryst. A64, 112–122.
Schiff bases have received considerable attention in the literature. They are attractive from several points of view, such as the possibility of analytical application (Cimerman, et al., 1997). As part of our search for new schiff base compounds we synthesized the title compound (I), and describe its structure here.
As shown in Fig. 1, the asymmetric unit contains two crystallographically independent molecules. The C3—N2 bond length of 1.277 (3) Å and C13—N5 bond length of 1.287 (3) Å is comparable with C—N double bond [1.281 (2) Å] reported (Girgis, 2006).
In the structure, there exist C-H···O, C-H···N and N-H···N hydrogen bonding interactions. Inversion-related molecules form a dimer structure, in which two N—H···O hydrogen bonds generate an intermolecular R22(8) ring (Table 1).