organic compounds
N,N′-Bis(pyridin-2-yl)benzene-1,4-dicarboxamide
aDepartment of Chemistry, Chung-Yuan Christian University, Chung-Li, Taiwan
*Correspondence e-mail: jdchen@cycu.edu.tw
Molecules of the title compound, C18H14N4O2, are located around an inversion center and connected into chains in the crystal via intermolecular N—H⋯N hydrogen bonds generating an R22(8) motif.
Related literature
For N,N′-bis(pyridinyl) derivatives of 1,4-benzenedicarboxamide and their metal complexes, see: Tsai et al. (2010).
Experimental
Crystal data
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Refinement
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Data collection: XSCANS (Siemens, 1995); cell XSCANS; data reduction: XSCANS and SHELXTL (Sheldrick, 2008); program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: SHELXTL; software used to prepare material for publication: SHELXTL.
Supporting information
https://doi.org/10.1107/S1600536810051172/gk2331sup1.cif
contains datablocks I, global. DOI:Structure factors: contains datablock I. DOI: https://doi.org/10.1107/S1600536810051172/gk2331Isup2.hkl
The title compound was prepared according to a published procedure (Tsai, et al., 2010). Block crystals suitable for X-ray crystallography were obtained by slow evaporization of the solvent from a solution of the title compound in methanol.
All the hydrogen atoms were placed into idealized positions and refined in the riding atom approximation with C—H = 0.93 Å, N—H = 0.86 Å and Uiso(H) = 1.2 Ueq(C, N).
Several Cu(II), Cd(II) and Hg(II) complexes containg N,N'-bis(2/3-aryl)-1,4-benzenedicarboxamide ligands have been reported, which show one-dimensional and two-dimensional structures (Tsai, et al., 2010). Within this project the
of the title compound was determined.In its
intermolecular N—H···N hydrogen bonds are found (Tab. 1) and the molecule is located on a center of inversion (Fig. 1).For N,N'-bis(pyridinyl) derivatives of 1,4-benzenedicarboxamide and their metal complexes, see: Tsai et al. (2010).
Data collection: XSCANS (Siemens, 1995); cell
XSCANS (Siemens, 1995); data reduction: SHELXTL (Sheldrick, 2008); 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).Fig. 1. Crystal structure of the title compound with atom labeling and displacement ellipsoids drawn at the 30% probability level. Symmetry code: (i) =-x + 2,-y,-z. |
C18H14N4O2 | Z = 1 |
Mr = 318.33 | F(000) = 166 |
Triclinic, P1 | Dx = 1.430 Mg m−3 |
Hall symbol: -P 1 | Mo Kα radiation, λ = 0.71073 Å |
a = 5.7895 (4) Å | Cell parameters from 50 reflections |
b = 7.8315 (6) Å | θ = 4.8–15.0° |
c = 8.8460 (5) Å | µ = 0.10 mm−1 |
α = 82.906 (6)° | T = 298 K |
β = 74.083 (5)° | Block, pale yellow |
γ = 73.695 (6)° | 0.60 × 0.60 × 0.56 mm |
V = 369.72 (4) Å3 |
Bruker P4 diffractometer | 1521 reflections with I > 2σ(I) |
Radiation source: fine-focus sealed tube | Rint = 0.013 |
Graphite monochromator | θmax = 28.0°, θmin = 2.4° |
ω scans | h = 0→7 |
Absorption correction: ψ scan (XSCANS; Siemens, 1995) | k = −9→10 |
Tmin = 0.831, Tmax = 0.851 | l = −11→11 |
1962 measured reflections | 3 standard reflections every 97 reflections |
1787 independent reflections | intensity decay: none |
Refinement on F2 | Secondary atom site location: difference Fourier map |
Least-squares matrix: full | Hydrogen site location: inferred from neighbouring sites |
R[F2 > 2σ(F2)] = 0.040 | H-atom parameters constrained |
wR(F2) = 0.112 | w = 1/[σ2(Fo2) + (0.0468P)2 + 0.1049P] where P = (Fo2 + 2Fc2)/3 |
S = 1.06 | (Δ/σ)max < 0.001 |
1787 reflections | Δρmax = 0.32 e Å−3 |
110 parameters | Δρmin = −0.19 e Å−3 |
0 restraints | Extinction correction: SHELXL97 (Sheldrick, 2008), Fc*=kFc[1+0.001xFc2λ3/sin(2θ)]-1/4 |
Primary atom site location: structure-invariant direct methods | Extinction coefficient: 0.193 (17) |
C18H14N4O2 | γ = 73.695 (6)° |
Mr = 318.33 | V = 369.72 (4) Å3 |
Triclinic, P1 | Z = 1 |
a = 5.7895 (4) Å | Mo Kα radiation |
b = 7.8315 (6) Å | µ = 0.10 mm−1 |
c = 8.8460 (5) Å | T = 298 K |
α = 82.906 (6)° | 0.60 × 0.60 × 0.56 mm |
β = 74.083 (5)° |
Bruker P4 diffractometer | 1521 reflections with I > 2σ(I) |
Absorption correction: ψ scan (XSCANS; Siemens, 1995) | Rint = 0.013 |
Tmin = 0.831, Tmax = 0.851 | 3 standard reflections every 97 reflections |
1962 measured reflections | intensity decay: none |
1787 independent reflections |
R[F2 > 2σ(F2)] = 0.040 | 0 restraints |
wR(F2) = 0.112 | H-atom parameters constrained |
S = 1.06 | Δρmax = 0.32 e Å−3 |
1787 reflections | Δρmin = −0.19 e Å−3 |
110 parameters |
Experimental. 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. |
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. |
x | y | z | Uiso*/Ueq | ||
O | 1.1101 (2) | 0.21659 (16) | 0.30550 (13) | 0.0497 (3) | |
N1 | 0.7461 (2) | 0.13586 (16) | 0.41052 (13) | 0.0369 (3) | |
H1A | 0.6695 | 0.0611 | 0.3982 | 0.044* | |
N2 | 0.4263 (2) | 0.20173 (15) | 0.63054 (13) | 0.0353 (3) | |
C1 | 0.6435 (2) | 0.23152 (17) | 0.54787 (14) | 0.0316 (3) | |
C2 | 0.7512 (3) | 0.35023 (19) | 0.59089 (16) | 0.0393 (3) | |
H2B | 0.9066 | 0.3632 | 0.5336 | 0.047* | |
C3 | 0.6200 (3) | 0.4479 (2) | 0.72110 (18) | 0.0434 (4) | |
H3A | 0.6853 | 0.5296 | 0.7523 | 0.052* | |
C4 | 0.3907 (3) | 0.42384 (19) | 0.80528 (17) | 0.0422 (3) | |
H4A | 0.2982 | 0.4900 | 0.8924 | 0.051* | |
C5 | 0.3035 (3) | 0.29915 (19) | 0.75631 (16) | 0.0381 (3) | |
H5A | 0.1507 | 0.2816 | 0.8138 | 0.046* | |
C6 | 0.9524 (2) | 0.14708 (17) | 0.29436 (15) | 0.0322 (3) | |
C7 | 0.9716 (2) | 0.06764 (16) | 0.14401 (14) | 0.0290 (3) | |
C8 | 1.2030 (2) | −0.03051 (17) | 0.06322 (14) | 0.0314 (3) | |
H8A | 1.3391 | −0.0509 | 0.1057 | 0.038* | |
C9 | 1.2324 (2) | −0.09833 (17) | −0.08032 (15) | 0.0321 (3) | |
H9A | 1.3876 | −0.1641 | −0.1340 | 0.039* |
U11 | U22 | U33 | U12 | U13 | U23 | |
O | 0.0418 (6) | 0.0697 (7) | 0.0464 (6) | −0.0318 (5) | −0.0005 (5) | −0.0194 (5) |
N1 | 0.0417 (6) | 0.0460 (6) | 0.0291 (5) | −0.0261 (5) | −0.0008 (5) | −0.0092 (5) |
N2 | 0.0366 (6) | 0.0411 (6) | 0.0302 (5) | −0.0166 (5) | −0.0041 (4) | −0.0045 (4) |
C1 | 0.0368 (6) | 0.0353 (6) | 0.0256 (6) | −0.0148 (5) | −0.0065 (5) | −0.0023 (5) |
C2 | 0.0426 (7) | 0.0445 (8) | 0.0364 (7) | −0.0224 (6) | −0.0055 (6) | −0.0067 (6) |
C3 | 0.0532 (9) | 0.0383 (7) | 0.0443 (8) | −0.0182 (6) | −0.0115 (7) | −0.0100 (6) |
C4 | 0.0491 (8) | 0.0360 (7) | 0.0382 (7) | −0.0074 (6) | −0.0055 (6) | −0.0110 (5) |
C5 | 0.0360 (7) | 0.0401 (7) | 0.0353 (7) | −0.0101 (6) | −0.0029 (5) | −0.0041 (5) |
C6 | 0.0332 (6) | 0.0359 (6) | 0.0298 (6) | −0.0144 (5) | −0.0052 (5) | −0.0039 (5) |
C7 | 0.0300 (6) | 0.0323 (6) | 0.0259 (6) | −0.0139 (5) | −0.0030 (4) | −0.0015 (4) |
C8 | 0.0267 (6) | 0.0384 (7) | 0.0308 (6) | −0.0119 (5) | −0.0068 (5) | −0.0011 (5) |
C9 | 0.0263 (6) | 0.0359 (6) | 0.0320 (6) | −0.0084 (5) | −0.0020 (5) | −0.0057 (5) |
O—C6 | 1.2169 (16) | C4—C5 | 1.377 (2) |
N1—C6 | 1.3614 (16) | C4—H4A | 0.9300 |
N1—C1 | 1.4034 (16) | C5—H5A | 0.9300 |
N1—H1A | 0.8600 | C6—C7 | 1.5009 (17) |
N2—C1 | 1.3375 (17) | C7—C8 | 1.3888 (17) |
N2—C5 | 1.3403 (17) | C7—C9i | 1.3936 (17) |
C1—C2 | 1.3932 (18) | C8—C9 | 1.3860 (17) |
C2—C3 | 1.378 (2) | C8—H8A | 0.9300 |
C2—H2B | 0.9300 | C9—C7i | 1.3936 (17) |
C3—C4 | 1.384 (2) | C9—H9A | 0.9300 |
C3—H3A | 0.9300 | ||
C6—N1—C1 | 127.85 (11) | N2—C5—C4 | 123.77 (13) |
C6—N1—H1A | 116.1 | N2—C5—H5A | 118.1 |
C1—N1—H1A | 116.1 | C4—C5—H5A | 118.1 |
C1—N2—C5 | 117.11 (11) | O—C6—N1 | 124.94 (12) |
N2—C1—C2 | 123.38 (12) | O—C6—C7 | 120.89 (11) |
N2—C1—N1 | 112.88 (11) | N1—C6—C7 | 114.16 (11) |
C2—C1—N1 | 123.70 (12) | C8—C7—C9i | 119.81 (11) |
C3—C2—C1 | 117.84 (13) | C8—C7—C6 | 118.37 (11) |
C3—C2—H2B | 121.1 | C9i—C7—C6 | 121.72 (11) |
C1—C2—H2B | 121.1 | C9—C8—C7 | 120.42 (12) |
C2—C3—C4 | 119.75 (13) | C9—C8—H8A | 119.8 |
C2—C3—H3A | 120.1 | C7—C8—H8A | 119.8 |
C4—C3—H3A | 120.1 | C8—C9—C7i | 119.77 (11) |
C5—C4—C3 | 118.06 (13) | C8—C9—H9A | 120.1 |
C5—C4—H4A | 121.0 | C7i—C9—H9A | 120.1 |
C3—C4—H4A | 121.0 |
Symmetry code: (i) −x+2, −y, −z. |
D—H···A | D—H | H···A | D···A | D—H···A |
N1—H1A···N2ii | 0.86 | 2.34 | 3.1679 (15) | 163 |
Symmetry code: (ii) −x+1, −y, −z+1. |
Experimental details
Crystal data | |
Chemical formula | C18H14N4O2 |
Mr | 318.33 |
Crystal system, space group | Triclinic, P1 |
Temperature (K) | 298 |
a, b, c (Å) | 5.7895 (4), 7.8315 (6), 8.8460 (5) |
α, β, γ (°) | 82.906 (6), 74.083 (5), 73.695 (6) |
V (Å3) | 369.72 (4) |
Z | 1 |
Radiation type | Mo Kα |
µ (mm−1) | 0.10 |
Crystal size (mm) | 0.60 × 0.60 × 0.56 |
Data collection | |
Diffractometer | Bruker P4 |
Absorption correction | ψ scan (XSCANS; Siemens, 1995) |
Tmin, Tmax | 0.831, 0.851 |
No. of measured, independent and observed [I > 2σ(I)] reflections | 1962, 1787, 1521 |
Rint | 0.013 |
(sin θ/λ)max (Å−1) | 0.661 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.040, 0.112, 1.06 |
No. of reflections | 1787 |
No. of parameters | 110 |
H-atom treatment | H-atom parameters constrained |
Δρmax, Δρmin (e Å−3) | 0.32, −0.19 |
Computer programs: XSCANS (Siemens, 1995), SHELXTL (Sheldrick, 2008), SHELXS97 (Sheldrick, 2008), SHELXL97 (Sheldrick, 2008).
D—H···A | D—H | H···A | D···A | D—H···A |
N1—H1A···N2i | 0.86 | 2.34 | 3.1679 (15) | 163 |
Symmetry code: (i) −x+1, −y, −z+1. |
Acknowledgements
We are grateful to the National Science Council of the Republic of China for support. This research was also supported by the project of the specific research fields in Chung-Yuan Christian University, Taiwan, under grant No. CYCU-98-CR—CH.
References
Sheldrick, G. M. (2008). Acta Cryst. A64, 112–122. Web of Science CrossRef CAS IUCr Journals Google Scholar
Siemens (1995). XSCANS. Siemens Analytical X-ray Instruments Inc., Madison, Wisconsin, USA. Google Scholar
Tsai, T.-P., Huang, Y.-T., Ray, U., Chang, Y.-J., Cheng, P.-C., Wu, C.-J., Chen, J.-D. & Wang, J. C. (2010). Polyhedron, pp. 3081–3088. Web of Science CSD CrossRef Google Scholar
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Several Cu(II), Cd(II) and Hg(II) complexes containg N,N'-bis(2/3-aryl)-1,4-benzenedicarboxamide ligands have been reported, which show one-dimensional and two-dimensional structures (Tsai, et al., 2010). Within this project the crystal structure of the title compound was determined.
In its crystal structure intermolecular N—H···N hydrogen bonds are found (Tab. 1) and the molecule is located on a center of inversion (Fig. 1).