organic compounds
2,2′-[Pyridine-2,6-diylbis(carbonylhydrazono)]dipropanoic acid N,N-dimethylformamide disolvate
aCollege of Chemistry and Chemical Engineering, Liaocheng University, Shandong 252059, People's Republic of China
*Correspondence e-mail: handongyin@163.com
The complete molecule of the title compound, C13H13N5O6·2C3H7NO, is generated by crystallographic twofold rotation with an N and a C atom lying on the axis. The structure is stabilized by intermolecular O—H⋯O hydrogen bonds.
Related literature
For the synthesis and structures of some organotin(IV) complexes of related tridentate hydrazone ligands see: Yin et al. (2008).
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
https://doi.org/10.1107/S160053680903997X/sj2660sup1.cif
contains datablocks I, global. DOI:Structure factors: contains datablock I. DOI: https://doi.org/10.1107/S160053680903997X/sj2660Isup2.hkl
Compound (I) was synthesized by the reaction of pyridine-2,6-dihydrazide (5 mmol) with pyruvic acid (10 mmol). Single crystals of (I) suitable for X-ray diffraction were obtained by slow evaporation of an N,N-dimethylformamide solution.
The H atoms were positioned geometrically, with methyl C—H distances of 0.96 Å, aromatic and aldehydic C—H distances of 0.93 Å, N—H distances of 0.86 Å and O—H distances of 0.82 Å, and refined as riding on their parent atoms, with Uiso(H) = 1.2 Ueq(C, N) or 1.5 Ueq(C, O) for the methyl groups.
Recently, we have reported some organotin(IV) complexes with hydrazone ligands (Yin et al., 2008). As an extension of our work on the structural characterization of hydrazone compounds, the title compound, (I), is reported here.
The two halves of the main molecule are symmetrically related, Fig. 1, with the N1, C4 and H4 atoms of the pyridine ring lying on the two-fold axis to form a helical species. The N3═C6 bond length of 1.283 (3) Å (Table 1) conforms to the value for a double bond, while the N2—C1 [1.361 (3) Å] and N2—N3 [1.369 (3) Å] bonds are intermediate between a double bond and a single bond because of conjugation effects in the molecule.
For the synthesis and structures of some organotin(IV) complexes of related tridentate hydrazone ligands see: Yin et al. (2008).
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).C13H13N5O6·2C3H7NO | F(000) = 1016 |
Mr = 481.48 | Dx = 1.398 Mg m−3 |
Monoclinic, C2/c | Mo Kα radiation, λ = 0.71073 Å |
Hall symbol: -C 2yc | Cell parameters from 1027 reflections |
a = 19.5743 (17) Å | θ = 2.2–21.9° |
b = 10.4041 (11) Å | µ = 0.11 mm−1 |
c = 11.7924 (12) Å | T = 298 K |
β = 107.684 (1)° | Block, colorless |
V = 2288.1 (4) Å3 | 0.40 × 0.39 × 0.17 mm |
Z = 4 |
Siemens CCD area-detector diffractometer | 2017 independent reflections |
Radiation source: fine-focus sealed tube | 1102 reflections with I > 2σ(I) |
Graphite monochromator | Rint = 0.041 |
φ and ω scans | θmax = 25.0°, θmin = 2.2° |
Absorption correction: multi-scan (SADABS; Sheldrick, 1996) | h = −23→23 |
Tmin = 0.957, Tmax = 0.981 | k = −6→12 |
5528 measured reflections | l = −12→14 |
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)] = 0.045 | Hydrogen site location: inferred from neighbouring sites |
wR(F2) = 0.137 | H-atom parameters constrained |
S = 1.00 | w = 1/[σ2(Fo2) + (0.0581P)2 + 0.8585P] where P = (Fo2 + 2Fc2)/3 |
2017 reflections | (Δ/σ)max = 0.004 |
158 parameters | Δρmax = 0.20 e Å−3 |
0 restraints | Δρmin = −0.14 e Å−3 |
C13H13N5O6·2C3H7NO | V = 2288.1 (4) Å3 |
Mr = 481.48 | Z = 4 |
Monoclinic, C2/c | Mo Kα radiation |
a = 19.5743 (17) Å | µ = 0.11 mm−1 |
b = 10.4041 (11) Å | T = 298 K |
c = 11.7924 (12) Å | 0.40 × 0.39 × 0.17 mm |
β = 107.684 (1)° |
Siemens CCD area-detector diffractometer | 2017 independent reflections |
Absorption correction: multi-scan (SADABS; Sheldrick, 1996) | 1102 reflections with I > 2σ(I) |
Tmin = 0.957, Tmax = 0.981 | Rint = 0.041 |
5528 measured reflections |
R[F2 > 2σ(F2)] = 0.045 | 0 restraints |
wR(F2) = 0.137 | H-atom parameters constrained |
S = 1.00 | Δρmax = 0.20 e Å−3 |
2017 reflections | Δρmin = −0.14 e Å−3 |
158 parameters |
x | y | z | Uiso*/Ueq | ||
N1 | 0.5000 | 0.2225 (3) | 0.7500 | 0.0370 (8) | |
N2 | 0.56173 (12) | 0.3597 (2) | 0.6173 (2) | 0.0440 (6) | |
H2 | 0.5454 | 0.3894 | 0.6721 | 0.053* | |
N3 | 0.58981 (11) | 0.4428 (2) | 0.55325 (18) | 0.0414 (6) | |
N4 | 0.71491 (12) | 1.0005 (2) | 0.3217 (2) | 0.0492 (7) | |
O1 | 0.58033 (11) | 0.18075 (19) | 0.52026 (18) | 0.0608 (6) | |
O2 | 0.62171 (12) | 0.76940 (19) | 0.54017 (18) | 0.0615 (6) | |
O3 | 0.64206 (11) | 0.60873 (17) | 0.43031 (16) | 0.0539 (6) | |
H3 | 0.6570 | 0.6669 | 0.3972 | 0.081* | |
O4 | 0.69084 (11) | 0.78824 (19) | 0.32604 (17) | 0.0546 (6) | |
C1 | 0.55919 (15) | 0.2310 (3) | 0.5960 (2) | 0.0414 (7) | |
C2 | 0.52726 (14) | 0.1563 (2) | 0.6765 (2) | 0.0365 (7) | |
C3 | 0.52768 (15) | 0.0235 (3) | 0.6730 (2) | 0.0472 (7) | |
H3A | 0.5462 | −0.0199 | 0.6199 | 0.057* | |
C4 | 0.5000 | −0.0427 (4) | 0.7500 | 0.0550 (12) | |
H4 | 0.5000 | −0.1320 | 0.7500 | 0.066* | |
C5 | 0.62039 (14) | 0.6566 (3) | 0.5162 (2) | 0.0417 (7) | |
C6 | 0.59176 (14) | 0.5610 (3) | 0.5853 (2) | 0.0394 (7) | |
C7 | 0.56634 (16) | 0.6134 (3) | 0.6825 (3) | 0.0569 (9) | |
H7A | 0.5151 | 0.6058 | 0.6610 | 0.085* | |
H7B | 0.5797 | 0.7023 | 0.6950 | 0.085* | |
H7C | 0.5878 | 0.5660 | 0.7544 | 0.085* | |
C8 | 0.69523 (15) | 0.8983 (3) | 0.3682 (3) | 0.0502 (8) | |
H8 | 0.6836 | 0.9088 | 0.4385 | 0.060* | |
C9 | 0.73224 (17) | 0.9912 (3) | 0.2111 (3) | 0.0645 (10) | |
H9A | 0.7245 | 0.9046 | 0.1818 | 0.097* | |
H9B | 0.7816 | 1.0141 | 0.2246 | 0.097* | |
H9C | 0.7021 | 1.0486 | 0.1536 | 0.097* | |
C10 | 0.7204 (2) | 1.1255 (3) | 0.3783 (3) | 0.0787 (11) | |
H10A | 0.6987 | 1.1220 | 0.4412 | 0.118* | |
H10B | 0.6961 | 1.1884 | 0.3206 | 0.118* | |
H10C | 0.7700 | 1.1488 | 0.4106 | 0.118* |
U11 | U22 | U33 | U12 | U13 | U23 | |
N1 | 0.0357 (18) | 0.0301 (17) | 0.0426 (18) | 0.000 | 0.0078 (15) | 0.000 |
N2 | 0.0566 (16) | 0.0331 (13) | 0.0493 (14) | −0.0003 (12) | 0.0264 (12) | 0.0034 (11) |
N3 | 0.0420 (14) | 0.0390 (14) | 0.0456 (14) | 0.0005 (12) | 0.0170 (11) | 0.0080 (12) |
N4 | 0.0583 (16) | 0.0443 (14) | 0.0490 (15) | −0.0039 (13) | 0.0222 (13) | 0.0069 (13) |
O1 | 0.0845 (16) | 0.0466 (13) | 0.0638 (14) | −0.0028 (12) | 0.0410 (12) | −0.0082 (11) |
O2 | 0.0899 (17) | 0.0351 (12) | 0.0710 (15) | −0.0122 (12) | 0.0419 (13) | −0.0040 (11) |
O3 | 0.0756 (14) | 0.0412 (12) | 0.0559 (13) | −0.0021 (11) | 0.0360 (11) | 0.0046 (10) |
O4 | 0.0693 (14) | 0.0457 (13) | 0.0542 (13) | −0.0067 (11) | 0.0268 (11) | 0.0046 (11) |
C1 | 0.0444 (17) | 0.0342 (16) | 0.0452 (17) | 0.0023 (14) | 0.0129 (14) | −0.0011 (14) |
C2 | 0.0395 (16) | 0.0276 (15) | 0.0402 (16) | 0.0001 (13) | 0.0089 (13) | −0.0028 (13) |
C3 | 0.0542 (19) | 0.0338 (16) | 0.0558 (19) | 0.0004 (15) | 0.0202 (15) | −0.0081 (15) |
C4 | 0.075 (3) | 0.025 (2) | 0.073 (3) | 0.000 | 0.034 (3) | 0.000 |
C5 | 0.0407 (17) | 0.0444 (19) | 0.0420 (17) | −0.0004 (15) | 0.0154 (14) | 0.0015 (14) |
C6 | 0.0404 (17) | 0.0343 (16) | 0.0459 (16) | 0.0010 (14) | 0.0169 (13) | 0.0038 (14) |
C7 | 0.075 (2) | 0.0429 (18) | 0.065 (2) | −0.0003 (17) | 0.0401 (18) | −0.0006 (16) |
C8 | 0.055 (2) | 0.054 (2) | 0.0442 (17) | −0.0059 (17) | 0.0193 (15) | 0.0034 (16) |
C9 | 0.081 (2) | 0.062 (2) | 0.057 (2) | −0.0082 (19) | 0.0322 (18) | 0.0150 (17) |
C10 | 0.108 (3) | 0.048 (2) | 0.093 (3) | −0.009 (2) | 0.049 (2) | −0.008 (2) |
N1—C2i | 1.339 (3) | C3—C4 | 1.375 (3) |
N1—C2 | 1.339 (3) | C3—H3A | 0.9300 |
N2—C1 | 1.361 (3) | C4—C3i | 1.375 (3) |
N2—N3 | 1.369 (3) | C4—H4 | 0.9300 |
N2—H2 | 0.8600 | C5—C6 | 1.499 (4) |
N3—C6 | 1.283 (3) | C6—C7 | 1.485 (4) |
N4—C8 | 1.308 (3) | C7—H7A | 0.9600 |
N4—C9 | 1.447 (3) | C7—H7B | 0.9600 |
N4—C10 | 1.451 (4) | C7—H7C | 0.9600 |
O1—C1 | 1.211 (3) | C8—H8 | 0.9300 |
O2—C5 | 1.205 (3) | C9—H9A | 0.9600 |
O3—C5 | 1.310 (3) | C9—H9B | 0.9600 |
O3—H3 | 0.8200 | C9—H9C | 0.9600 |
O4—C8 | 1.241 (3) | C10—H10A | 0.9600 |
C1—C2 | 1.503 (4) | C10—H10B | 0.9600 |
C2—C3 | 1.382 (4) | C10—H10C | 0.9600 |
C2i—N1—C2 | 118.0 (3) | N3—C6—C7 | 126.3 (2) |
C1—N2—N3 | 121.2 (2) | N3—C6—C5 | 117.3 (2) |
C1—N2—H2 | 119.4 | C7—C6—C5 | 116.4 (2) |
N3—N2—H2 | 119.4 | C6—C7—H7A | 109.5 |
C6—N3—N2 | 115.1 (2) | C6—C7—H7B | 109.5 |
C8—N4—C9 | 120.2 (3) | H7A—C7—H7B | 109.5 |
C8—N4—C10 | 121.7 (3) | C6—C7—H7C | 109.5 |
C9—N4—C10 | 118.0 (3) | H7A—C7—H7C | 109.5 |
C5—O3—H3 | 109.5 | H7B—C7—H7C | 109.5 |
O1—C1—N2 | 124.0 (3) | O4—C8—N4 | 125.1 (3) |
O1—C1—C2 | 123.0 (2) | O4—C8—H8 | 117.4 |
N2—C1—C2 | 113.0 (2) | N4—C8—H8 | 117.4 |
N1—C2—C3 | 122.8 (3) | N4—C9—H9A | 109.5 |
N1—C2—C1 | 117.8 (2) | N4—C9—H9B | 109.5 |
C3—C2—C1 | 119.4 (2) | H9A—C9—H9B | 109.5 |
C4—C3—C2 | 118.3 (3) | N4—C9—H9C | 109.5 |
C4—C3—H3A | 120.9 | H9A—C9—H9C | 109.5 |
C2—C3—H3A | 120.9 | H9B—C9—H9C | 109.5 |
C3—C4—C3i | 119.9 (4) | N4—C10—H10A | 109.5 |
C3—C4—H4 | 120.1 | N4—C10—H10B | 109.5 |
C3i—C4—H4 | 120.1 | H10A—C10—H10B | 109.5 |
O2—C5—O3 | 124.2 (3) | N4—C10—H10C | 109.5 |
O2—C5—C6 | 120.3 (3) | H10A—C10—H10C | 109.5 |
O3—C5—C6 | 115.5 (2) | H10B—C10—H10C | 109.5 |
Symmetry code: (i) −x+1, y, −z+3/2. |
Experimental details
Crystal data | |
Chemical formula | C13H13N5O6·2C3H7NO |
Mr | 481.48 |
Crystal system, space group | Monoclinic, C2/c |
Temperature (K) | 298 |
a, b, c (Å) | 19.5743 (17), 10.4041 (11), 11.7924 (12) |
β (°) | 107.684 (1) |
V (Å3) | 2288.1 (4) |
Z | 4 |
Radiation type | Mo Kα |
µ (mm−1) | 0.11 |
Crystal size (mm) | 0.40 × 0.39 × 0.17 |
Data collection | |
Diffractometer | Siemens CCD area-detector |
Absorption correction | Multi-scan (SADABS; Sheldrick, 1996) |
Tmin, Tmax | 0.957, 0.981 |
No. of measured, independent and observed [I > 2σ(I)] reflections | 5528, 2017, 1102 |
Rint | 0.041 |
(sin θ/λ)max (Å−1) | 0.595 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.045, 0.137, 1.00 |
No. of reflections | 2017 |
No. of parameters | 158 |
H-atom treatment | H-atom parameters constrained |
Δρmax, Δρmin (e Å−3) | 0.20, −0.14 |
Computer programs: SMART (Siemens, 1996), SAINT (Siemens, 1996), SHELXS97 (Sheldrick, 2008), SHELXL97 (Sheldrick, 2008), SHELXTL (Sheldrick, 2008).
Acknowledgements
We acknowledge the National Natural Foundation of China (20771053), the Scientific Research Fund of Liaocheng University (X081006) and the Students Science and Technology Innovation Fund of Liaocheng University (SRT08031HX2).
References
Sheldrick, G. M. (1996). SADABS. University of Göttingen, Germany. Google Scholar
Sheldrick, G. M. (2008). Acta Cryst. A64, 112–122. Web of Science CrossRef CAS IUCr Journals Google Scholar
Siemens (1996). SMART and SAINT. Siemens Analytical X-ray Instruments Inc., Madison, Wisconsin, USA. Google Scholar
Yin, H., Cui, J. & Qiao, Y. (2008). Polyhedron, 27, 2157–2166. Web of Science CSD CrossRef CAS Google Scholar
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Recently, we have reported some organotin(IV) complexes with hydrazone ligands (Yin et al., 2008). As an extension of our work on the structural characterization of hydrazone compounds, the title compound, (I), is reported here.
The two halves of the main molecule are symmetrically related, Fig. 1, with the N1, C4 and H4 atoms of the pyridine ring lying on the two-fold axis to form a helical species. The N3═C6 bond length of 1.283 (3) Å (Table 1) conforms to the value for a double bond, while the N2—C1 [1.361 (3) Å] and N2—N3 [1.369 (3) Å] bonds are intermediate between a double bond and a single bond because of conjugation effects in the molecule.