organic compounds
N′-[(E)-(1-Methyl-1H-pyrrol-2-yl)methylidene]benzohydrazide
aDepartment of Chemistry, Bahauddin Zakariya University, Multan 60800, Pakistan, and bDepartment of Physics, University of Sargodha, Sargodha, Pakistan
*Correspondence e-mail: dmntahir_uos@yahoo.com
In the title compound, C13H13N3O, the phenyl and pyrrole rings are inclined at 47.45 (8)°. In the crystal, intermolecular N—H⋯O and C—H⋯O hydrogen bonds form R21(6) ring motifs. Molecules connected through these hydrogen bonds are arranged into polymeric chains extending along the c axis.
Related literature
For related structures, see: Shafiq et al. (2009a,b). For graph-set notation, see: Bernstein et al. (1995).
Experimental
Crystal data
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Refinement
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Data collection: APEX2 (Bruker, 2009); cell SAINT (Bruker, 2009); data reduction: SAINT; program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: ORTEP-3 for Windows (Farrugia, 1997) and PLATON (Spek, 2009); software used to prepare material for publication: WinGX (Farrugia, 1999) and PLATON.
Supporting information
https://doi.org/10.1107/S1600536810025390/gk2289sup1.cif
contains datablocks global, I. DOI:Structure factors: contains datablock I. DOI: https://doi.org/10.1107/S1600536810025390/gk2289Isup2.hkl
To a hot stirred solution of benzohydrazide (1.36 g, 0.01 mole) in ethanol 15 ml was added N-methylpyrrol-2-carboxaldehyde (1.1 ml, 0.01 mol). The resultant mixture was then heated under reflux. The reaction was monitored through TLC. After an hour, the precipitate was formed. The reaction mixture was further heated for 30 min. The resultant crude material was recrystallized from methanol to afford colourless needles of the titke compound.
The H atoms were positioned geometrically (N–H = 0.86 Å, C–H = 0.93–0.96 Å) and refined as riding with Uiso(H) = xUeq(C, N), where x = 1.5 for methyl group and x = 1.2 for all other H atoms.
We have reported crystal structures of
containing benzohydrazide (Shafiq et al., 2009a, 2009b) and as a part of this project, we report herein the structure and synthesis of the title compound (I, Fig. 1).In (I) the group A (C1–C7/N1/N2) of benzohydrazide and group B (C8—C12/N3/C13) of 1-methyl-1H-pyrrole are planar with r. m. s. deviation of 0.0345 and 0.0249 Å, respectively. The O atom of the carbonyl group is at a distance of 0.1993 (22) Å from the mean square plane of A. The dihedral angle between A/B is 46.78 (7)°. There exist intermolecular hydrgen bonds of N—H···O and C—H···O types (Table 1) that complete R21(6) ring motif (Bernstein et al., 1995). The molecules are stabilized in the form of one dimensional polymeric chains (Fig. 2) extending along the crystallographic c axis.
For related structures, see: Shafiq et al. (2009a,b). For graph-set notation, see: Bernstein et al. (1995).
Data collection: APEX2 (Bruker, 2009); cell
SAINT (Bruker, 2009); data reduction: SAINT (Bruker, 2009); program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: ORTEP-3 for Windows (Farrugia, 1997) and PLATON (Spek, 2009); software used to prepare material for publication: WinGX (Farrugia, 1999) and PLATON (Spek, 2009).C13H13N3O | F(000) = 480 |
Mr = 227.26 | Dx = 1.286 Mg m−3 |
Monoclinic, P21/c | Mo Kα radiation, λ = 0.71073 Å |
Hall symbol: -P 2ybc | Cell parameters from 1770 reflections |
a = 11.1170 (8) Å | θ = 2.6–28.4° |
b = 11.6329 (9) Å | µ = 0.09 mm−1 |
c = 9.6735 (6) Å | T = 296 K |
β = 110.241 (3)° | Needle, colorless |
V = 1173.75 (15) Å3 | 0.28 × 0.12 × 0.10 mm |
Z = 4 |
Bruker Kappa APEXII CCD diffractometer | 2930 independent reflections |
Radiation source: fine-focus sealed tube | 1770 reflections with I > 2σ(I) |
Graphite monochromator | Rint = 0.047 |
Detector resolution: 7.50 pixels mm-1 | θmax = 28.4°, θmin = 2.6° |
ω scans | h = −14→14 |
Absorption correction: multi-scan (SADABS; Bruker, 2005) | k = −15→15 |
Tmin = 0.942, Tmax = 0.952 | l = −12→9 |
11164 measured reflections |
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) = 0.139 | H-atom parameters constrained |
S = 1.02 | w = 1/[σ2(Fo2) + (0.0555P)2 + 0.160P] where P = (Fo2 + 2Fc2)/3 |
2930 reflections | (Δ/σ)max < 0.001 |
155 parameters | Δρmax = 0.19 e Å−3 |
0 restraints | Δρmin = −0.17 e Å−3 |
C13H13N3O | V = 1173.75 (15) Å3 |
Mr = 227.26 | Z = 4 |
Monoclinic, P21/c | Mo Kα radiation |
a = 11.1170 (8) Å | µ = 0.09 mm−1 |
b = 11.6329 (9) Å | T = 296 K |
c = 9.6735 (6) Å | 0.28 × 0.12 × 0.10 mm |
β = 110.241 (3)° |
Bruker Kappa APEXII CCD diffractometer | 2930 independent reflections |
Absorption correction: multi-scan (SADABS; Bruker, 2005) | 1770 reflections with I > 2σ(I) |
Tmin = 0.942, Tmax = 0.952 | Rint = 0.047 |
11164 measured reflections |
R[F2 > 2σ(F2)] = 0.052 | 0 restraints |
wR(F2) = 0.139 | H-atom parameters constrained |
S = 1.02 | Δρmax = 0.19 e Å−3 |
2930 reflections | Δρmin = −0.17 e Å−3 |
155 parameters |
Geometry. Bond distances, angles etc. have been calculated using the rounded fractional coordinates. All su's are estimated from the variances of the (full) variance-covariance matrix. The cell e.s.d.'s are taken into account in the estimation of distances, angles and torsion angles |
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 | 0.71496 (14) | 0.18682 (11) | 0.12223 (13) | 0.0554 (5) | |
N1 | 0.75685 (15) | 0.26311 (12) | 0.34764 (15) | 0.0431 (5) | |
N2 | 0.80816 (15) | 0.36186 (12) | 0.30879 (16) | 0.0442 (5) | |
N3 | 0.93230 (15) | 0.58927 (13) | 0.29335 (16) | 0.0457 (5) | |
C1 | 0.66632 (16) | 0.07206 (14) | 0.29906 (18) | 0.0394 (5) | |
C2 | 0.67749 (19) | 0.05014 (16) | 0.4433 (2) | 0.0492 (7) | |
C3 | 0.6323 (2) | −0.05186 (18) | 0.4795 (2) | 0.0602 (8) | |
C4 | 0.5752 (2) | −0.13174 (18) | 0.3738 (3) | 0.0639 (8) | |
C5 | 0.5635 (2) | −0.11093 (19) | 0.2302 (3) | 0.0695 (9) | |
C6 | 0.6095 (2) | −0.01047 (18) | 0.1927 (2) | 0.0565 (7) | |
C7 | 0.71456 (16) | 0.17851 (14) | 0.24946 (19) | 0.0389 (6) | |
C8 | 0.80671 (18) | 0.44929 (15) | 0.38773 (19) | 0.0454 (6) | |
C9 | 0.85533 (18) | 0.56059 (15) | 0.37314 (19) | 0.0445 (6) | |
C10 | 0.8295 (2) | 0.66046 (17) | 0.4330 (2) | 0.0592 (8) | |
C11 | 0.8898 (2) | 0.75049 (18) | 0.3880 (3) | 0.0657 (9) | |
C12 | 0.9521 (2) | 0.70430 (16) | 0.3038 (2) | 0.0563 (7) | |
C13 | 0.9916 (2) | 0.51144 (17) | 0.2185 (2) | 0.0562 (8) | |
H1 | 0.75240 | 0.25659 | 0.43429 | 0.0517* | |
H2 | 0.71552 | 0.10422 | 0.51611 | 0.0591* | |
H3 | 0.64097 | −0.06633 | 0.57704 | 0.0723* | |
H4 | 0.54425 | −0.19993 | 0.39907 | 0.0767* | |
H5 | 0.52429 | −0.16507 | 0.15793 | 0.0833* | |
H6 | 0.60254 | 0.00238 | 0.09532 | 0.0679* | |
H8 | 0.77103 | 0.43980 | 0.46091 | 0.0545* | |
H10 | 0.78019 | 0.66688 | 0.49312 | 0.0711* | |
H11 | 0.88753 | 0.82779 | 0.41155 | 0.0788* | |
H12 | 1.00108 | 0.74519 | 0.25975 | 0.0676* | |
H13A | 1.05186 | 0.55310 | 0.18654 | 0.0843* | |
H13B | 0.92678 | 0.47841 | 0.13455 | 0.0843* | |
H13C | 1.03550 | 0.45137 | 0.28485 | 0.0843* |
U11 | U22 | U33 | U12 | U13 | U23 | |
O1 | 0.0848 (10) | 0.0528 (8) | 0.0376 (7) | −0.0061 (7) | 0.0325 (7) | −0.0043 (6) |
N1 | 0.0592 (10) | 0.0417 (8) | 0.0346 (8) | −0.0077 (7) | 0.0241 (7) | −0.0013 (6) |
N2 | 0.0558 (10) | 0.0409 (8) | 0.0399 (8) | −0.0051 (7) | 0.0216 (7) | 0.0028 (7) |
N3 | 0.0516 (9) | 0.0408 (8) | 0.0479 (9) | −0.0001 (7) | 0.0214 (8) | 0.0031 (7) |
C1 | 0.0378 (9) | 0.0440 (10) | 0.0371 (9) | 0.0005 (8) | 0.0138 (8) | −0.0010 (8) |
C2 | 0.0590 (12) | 0.0476 (11) | 0.0426 (11) | −0.0056 (9) | 0.0195 (9) | −0.0009 (8) |
C3 | 0.0711 (14) | 0.0606 (13) | 0.0520 (12) | −0.0075 (11) | 0.0251 (11) | 0.0097 (10) |
C4 | 0.0647 (14) | 0.0540 (13) | 0.0751 (16) | −0.0136 (10) | 0.0269 (12) | 0.0061 (11) |
C5 | 0.0750 (16) | 0.0641 (14) | 0.0675 (15) | −0.0270 (12) | 0.0224 (12) | −0.0157 (12) |
C6 | 0.0604 (13) | 0.0633 (13) | 0.0446 (11) | −0.0146 (10) | 0.0165 (10) | −0.0064 (10) |
C7 | 0.0418 (10) | 0.0430 (10) | 0.0351 (9) | 0.0039 (8) | 0.0175 (8) | −0.0013 (8) |
C8 | 0.0568 (12) | 0.0453 (11) | 0.0388 (10) | −0.0008 (8) | 0.0224 (9) | 0.0022 (8) |
C9 | 0.0548 (11) | 0.0421 (10) | 0.0384 (10) | 0.0003 (8) | 0.0185 (9) | 0.0027 (8) |
C10 | 0.0787 (15) | 0.0468 (11) | 0.0624 (13) | 0.0016 (10) | 0.0375 (12) | −0.0031 (10) |
C11 | 0.0869 (17) | 0.0394 (11) | 0.0789 (16) | −0.0007 (10) | 0.0391 (14) | −0.0016 (10) |
C12 | 0.0662 (13) | 0.0407 (11) | 0.0668 (14) | −0.0041 (9) | 0.0291 (11) | 0.0076 (9) |
C13 | 0.0645 (14) | 0.0516 (12) | 0.0625 (13) | −0.0037 (10) | 0.0346 (11) | −0.0038 (10) |
O1—C7 | 1.236 (2) | C9—C10 | 1.372 (3) |
N1—N2 | 1.391 (2) | C10—C11 | 1.392 (3) |
N1—C7 | 1.335 (2) | C11—C12 | 1.350 (3) |
N2—C8 | 1.275 (2) | C2—H2 | 0.9300 |
N3—C9 | 1.377 (3) | C3—H3 | 0.9300 |
N3—C12 | 1.354 (2) | C4—H4 | 0.9300 |
N3—C13 | 1.452 (3) | C5—H5 | 0.9300 |
N1—H1 | 0.8600 | C6—H6 | 0.9300 |
C1—C2 | 1.381 (2) | C8—H8 | 0.9300 |
C1—C7 | 1.493 (2) | C10—H10 | 0.9300 |
C1—C6 | 1.389 (3) | C11—H11 | 0.9300 |
C2—C3 | 1.380 (3) | C12—H12 | 0.9300 |
C3—C4 | 1.365 (3) | C13—H13A | 0.9600 |
C4—C5 | 1.371 (4) | C13—H13B | 0.9600 |
C5—C6 | 1.374 (3) | C13—H13C | 0.9600 |
C8—C9 | 1.429 (3) | ||
O1···N2 | 2.6801 (19) | C13···H11iii | 3.0200 |
O1···N1i | 2.910 (2) | H1···C2 | 2.5500 |
O1···C8i | 3.209 (2) | H1···H2 | 2.0400 |
O1···H6 | 2.4500 | H1···H8 | 2.1500 |
O1···H1i | 2.1100 | H1···O1ii | 2.1100 |
O1···H2i | 2.6400 | H2···N1 | 2.6100 |
O1···H8i | 2.3800 | H2···H1 | 2.0400 |
N1···O1ii | 2.910 (2) | H2···O1ii | 2.6400 |
N2···N3 | 3.011 (2) | H2···N2ii | 2.6900 |
N2···O1 | 2.6801 (19) | H2···H13Bii | 2.4300 |
N2···C13 | 3.030 (3) | H3···C9ii | 3.0300 |
N3···N2 | 3.011 (2) | H4···C7ix | 3.0800 |
N1···H2 | 2.6100 | H6···O1 | 2.4500 |
N2···H13B | 2.8200 | H6···C6vii | 2.9600 |
N2···H12iii | 2.7800 | H6···H6vii | 2.3900 |
N2···H2i | 2.6900 | H8···H1 | 2.1500 |
N2···H13C | 2.8200 | H8···O1ii | 2.3800 |
C3···C3iv | 3.328 (3) | H11···C13vi | 3.0200 |
C8···O1ii | 3.209 (2) | H12···H13A | 2.4700 |
C9···C9v | 3.591 (3) | H12···N2vi | 2.7800 |
C11···C13vi | 3.599 (3) | H12···H13Cvi | 2.4500 |
C13···C11iii | 3.599 (3) | H13A···H12 | 2.4700 |
C13···N2 | 3.030 (3) | H13A···C1vi | 3.1000 |
C1···H13Aiii | 3.1000 | H13A···C7vi | 2.8500 |
C2···H13Bii | 2.7700 | H13B···N2 | 2.8200 |
C2···H1 | 2.5500 | H13B···C2i | 2.7700 |
C6···H6vii | 2.9600 | H13B···H2i | 2.4300 |
C7···H13Aiii | 2.8500 | H13C···N2 | 2.8200 |
C7···H4viii | 3.0800 | H13C···C8 | 3.0400 |
C8···H13C | 3.0400 | H13C···C12iii | 3.0200 |
C9···H3i | 3.0300 | H13C···H12iii | 2.4500 |
C10···H13Cv | 2.9300 | H13C···C10v | 2.9300 |
C12···H13Cvi | 3.0200 | ||
N2—N1—C7 | 119.54 (14) | C1—C2—H2 | 120.00 |
N1—N2—C8 | 113.93 (16) | C3—C2—H2 | 120.00 |
C9—N3—C12 | 108.30 (16) | C2—C3—H3 | 120.00 |
C9—N3—C13 | 127.28 (16) | C4—C3—H3 | 120.00 |
C12—N3—C13 | 124.28 (17) | C3—C4—H4 | 120.00 |
N2—N1—H1 | 120.00 | C5—C4—H4 | 120.00 |
C7—N1—H1 | 120.00 | C4—C5—H5 | 120.00 |
C6—C1—C7 | 117.20 (15) | C6—C5—H5 | 120.00 |
C2—C1—C6 | 118.66 (17) | C1—C6—H6 | 120.00 |
C2—C1—C7 | 124.13 (16) | C5—C6—H6 | 120.00 |
C1—C2—C3 | 120.11 (17) | N2—C8—H8 | 117.00 |
C2—C3—C4 | 120.73 (19) | C9—C8—H8 | 117.00 |
C3—C4—C5 | 119.7 (2) | C9—C10—H10 | 126.00 |
C4—C5—C6 | 120.3 (2) | C11—C10—H10 | 126.00 |
C1—C6—C5 | 120.52 (19) | C10—C11—H11 | 126.00 |
N1—C7—C1 | 117.39 (15) | C12—C11—H11 | 127.00 |
O1—C7—N1 | 121.93 (16) | N3—C12—H12 | 125.00 |
O1—C7—C1 | 120.68 (15) | C11—C12—H12 | 125.00 |
N2—C8—C9 | 125.45 (18) | N3—C13—H13A | 109.00 |
N3—C9—C10 | 107.02 (16) | N3—C13—H13B | 110.00 |
C8—C9—C10 | 125.74 (19) | N3—C13—H13C | 110.00 |
N3—C9—C8 | 127.20 (17) | H13A—C13—H13B | 109.00 |
C9—C10—C11 | 108.14 (19) | H13A—C13—H13C | 109.00 |
C10—C11—C12 | 107.00 (19) | H13B—C13—H13C | 109.00 |
N3—C12—C11 | 109.53 (19) | ||
C7—N1—N2—C8 | 158.43 (18) | C2—C1—C7—O1 | 171.48 (19) |
N2—N1—C7—O1 | −2.8 (3) | C2—C1—C7—N1 | −8.4 (3) |
N2—N1—C7—C1 | 177.08 (16) | C6—C1—C7—O1 | −7.0 (3) |
N1—N2—C8—C9 | 178.86 (18) | C6—C1—C7—N1 | 173.11 (18) |
C12—N3—C9—C8 | 177.51 (19) | C1—C2—C3—C4 | −0.6 (3) |
C12—N3—C9—C10 | −0.4 (2) | C2—C3—C4—C5 | 0.5 (4) |
C13—N3—C9—C8 | −6.7 (3) | C3—C4—C5—C6 | 0.3 (4) |
C13—N3—C9—C10 | 175.43 (18) | C4—C5—C6—C1 | −1.1 (4) |
C9—N3—C12—C11 | −0.1 (2) | N2—C8—C9—N3 | −13.0 (3) |
C13—N3—C12—C11 | −176.05 (19) | N2—C8—C9—C10 | 164.5 (2) |
C6—C1—C2—C3 | −0.2 (3) | N3—C9—C10—C11 | 0.7 (2) |
C7—C1—C2—C3 | −178.67 (19) | C8—C9—C10—C11 | −177.2 (2) |
C2—C1—C6—C5 | 1.1 (3) | C9—C10—C11—C12 | −0.7 (3) |
C7—C1—C6—C5 | 179.6 (2) | C10—C11—C12—N3 | 0.5 (3) |
Symmetry codes: (i) x, −y+1/2, z−1/2; (ii) x, −y+1/2, z+1/2; (iii) −x+2, y−1/2, −z+1/2; (iv) −x+1, −y, −z+1; (v) −x+2, −y+1, −z+1; (vi) −x+2, y+1/2, −z+1/2; (vii) −x+1, −y, −z; (viii) −x+1, y+1/2, −z+1/2; (ix) −x+1, y−1/2, −z+1/2. |
D—H···A | D—H | H···A | D···A | D—H···A |
N1—H1···O1ii | 0.86 | 2.11 | 2.910 (2) | 155 |
C8—H8···O1ii | 0.93 | 2.38 | 3.209 (2) | 148 |
Symmetry code: (ii) x, −y+1/2, z+1/2. |
Experimental details
Crystal data | |
Chemical formula | C13H13N3O |
Mr | 227.26 |
Crystal system, space group | Monoclinic, P21/c |
Temperature (K) | 296 |
a, b, c (Å) | 11.1170 (8), 11.6329 (9), 9.6735 (6) |
β (°) | 110.241 (3) |
V (Å3) | 1173.75 (15) |
Z | 4 |
Radiation type | Mo Kα |
µ (mm−1) | 0.09 |
Crystal size (mm) | 0.28 × 0.12 × 0.10 |
Data collection | |
Diffractometer | Bruker Kappa APEXII CCD |
Absorption correction | Multi-scan (SADABS; Bruker, 2005) |
Tmin, Tmax | 0.942, 0.952 |
No. of measured, independent and observed [I > 2σ(I)] reflections | 11164, 2930, 1770 |
Rint | 0.047 |
(sin θ/λ)max (Å−1) | 0.668 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.052, 0.139, 1.02 |
No. of reflections | 2930 |
No. of parameters | 155 |
H-atom treatment | H-atom parameters constrained |
Δρmax, Δρmin (e Å−3) | 0.19, −0.17 |
Computer programs: APEX2 (Bruker, 2009), SAINT (Bruker, 2009), SHELXS97 (Sheldrick, 2008), SHELXL97 (Sheldrick, 2008), ORTEP-3 for Windows (Farrugia, 1997) and PLATON (Spek, 2009), WinGX (Farrugia, 1999) and PLATON (Spek, 2009).
D—H···A | D—H | H···A | D···A | D—H···A |
N1—H1···O1i | 0.86 | 2.11 | 2.910 (2) | 155 |
C8—H8···O1i | 0.93 | 2.38 | 3.209 (2) | 148 |
Symmetry code: (i) x, −y+1/2, z+1/2. |
Acknowledgements
The authors acknowledge the provision of funds for the purchase of diffractometer and encouragement by Dr Muhammad Akram Chaudhary, Vice Chancellor, University of Sargodha, Pakistan.
References
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We have reported crystal structures of Schiff bases containing benzohydrazide (Shafiq et al., 2009a, 2009b) and as a part of this project, we report herein the structure and synthesis of the title compound (I, Fig. 1).
In (I) the group A (C1–C7/N1/N2) of benzohydrazide and group B (C8—C12/N3/C13) of 1-methyl-1H-pyrrole are planar with r. m. s. deviation of 0.0345 and 0.0249 Å, respectively. The O atom of the carbonyl group is at a distance of 0.1993 (22) Å from the mean square plane of A. The dihedral angle between A/B is 46.78 (7)°. There exist intermolecular hydrgen bonds of N—H···O and C—H···O types (Table 1) that complete R21(6) ring motif (Bernstein et al., 1995). The molecules are stabilized in the form of one dimensional polymeric chains (Fig. 2) extending along the crystallographic c axis.