organic compounds
(2-Pyridyl)[5-(2-pyridylcarbonyl)-2-pyridyl]methanone
aDepartment of Chemistry, Capital Normal University, Beijing 100048, People's Republic of China
*Correspondence e-mail: qiang-hong@163.com
In the centrosymmetric title compound, C17H11N3O2, the dihedral angle between the central and pendant pyridyl rings is 50.29 (9)°. In the crystal, molecules stack along the a axis by π–π interactions between the pyridine rings with centroid–centroid distances of 3.845 (2) Å. The N atom and one of the C atoms of the central ring are disordered by symmetry.
Related literature
For studies on other pyridinyl-based methanone species, see: Papaefstathiou & Perlepes (2002); Dendrinou-Samara et al. (2003); Crowder et al. (2004); Chen et al. (2005); Wan et al. (2008).
Experimental
Crystal data
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Data collection: APEX2 (Bruker, 2007); cell APEX2 and SAINT (Bruker, 2007); 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 and PLATON (Spek, 2009).
Supporting information
10.1107/S1600536810033957/jj2048sup1.cif
contains datablocks I, global. DOI:Structure factors: contains datablock I. DOI: 10.1107/S1600536810033957/jj2048Isup2.hkl
The preparation of the title compound followed the procedure previously developed for 2,6-pyridinediylbis(3-pyridyl)methanone (Wan et al., 2008).The crude product was extracted with chloroform, and the combined organic extract was dried over anhydrous sodium sulfate and finally concentrated in vacuo to give a brown oil. Further purification by
on silica gel (Rf= 0.44, ether acetate/dichloromethane = 1:6, v/v), giving 2.96 g of light yellow powder of 2,5-pyridinediylbis(2-pyridyl)methanone in 41% yield; m.p. 108-110°C; The yellow crystals of the title compound having a average 0.40 × 0.30 × 0.20 mm dimension were obtained by slow evaporation from its solution of dichloromethane/N,N-dimethylformamide 1/1 (v/v).The hydrogen atoms were placed in idealized positions and allowed to ride on the relevant carbon atoms, with C—H = 0.93 Å and Uĩso~(H) = 1.2U~eq~(C).
Data collection: APEX2 (Bruker 2007); cell
APEX2 and 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: SHELXTL (Sheldrick, 2008); software used to prepare material for publication: SHELXTL (Sheldrick, 2008) and PLATON (Spek, 2009).C17H11N3O2 | Z = 1 |
Mr = 289.30 | F(000) = 150 |
Triclinic, P1 | Dx = 1.441 Mg m−3 |
Hall symbol: -P 1 | Melting point: 401 K |
a = 3.8453 (13) Å | Mo Kα radiation, λ = 0.71073 Å |
b = 8.447 (3) Å | Cell parameters from 230 reflections |
c = 11.202 (3) Å | θ = 1.9–28.1° |
α = 108.672 (6)° | µ = 0.10 mm−1 |
β = 97.251 (6)° | T = 293 K |
γ = 99.772 (6)° | Block, yellow |
V = 333.29 (19) Å3 | 0.60 × 0.50 × 0.29 mm |
Bruker APEXII CCD area-detector diffractometer | 1623 independent reflections |
Radiation source: fine-focus sealed tube | 1198 reflections with I > 2σ(I) |
Graphite monochromator | Rint = 0.016 |
ω–scans | θmax = 28.4°, θmin = 2.0° |
Absorption correction: multi-scan SADABS (Bruker, 2007) | h = −5→4 |
Tmin = 0.622, Tmax = 1.000 | k = −11→11 |
2301 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)] = 0.058 | Hydrogen site location: inferred from neighbouring sites |
wR(F2) = 0.177 | H-atom parameters constrained |
S = 1.07 | w = 1/[σ2(Fo2) + (0.096P)2 + 0.0878P] where P = (Fo2 + 2Fc2)/3 |
1623 reflections | (Δ/σ)max < 0.001 |
100 parameters | Δρmax = 0.31 e Å−3 |
0 restraints | Δρmin = −0.26 e Å−3 |
C17H11N3O2 | γ = 99.772 (6)° |
Mr = 289.30 | V = 333.29 (19) Å3 |
Triclinic, P1 | Z = 1 |
a = 3.8453 (13) Å | Mo Kα radiation |
b = 8.447 (3) Å | µ = 0.10 mm−1 |
c = 11.202 (3) Å | T = 293 K |
α = 108.672 (6)° | 0.60 × 0.50 × 0.29 mm |
β = 97.251 (6)° |
Bruker APEXII CCD area-detector diffractometer | 1623 independent reflections |
Absorption correction: multi-scan SADABS (Bruker, 2007) | 1198 reflections with I > 2σ(I) |
Tmin = 0.622, Tmax = 1.000 | Rint = 0.016 |
2301 measured reflections |
R[F2 > 2σ(F2)] = 0.058 | 0 restraints |
wR(F2) = 0.177 | H-atom parameters constrained |
S = 1.07 | Δρmax = 0.31 e Å−3 |
1623 reflections | Δρmin = −0.26 e Å−3 |
100 parameters |
Geometry. All esds (except the esd in the dihedral angle between two l.s. planes) are estimated using the full covariance matrix. The cell esds are taken into account individually in the estimation of esds in distances, angles and torsion angles; correlations between esds in cell parameters are only used when they are defined by crystal symmetry. An approximate (isotropic) treatment of cell esds is used for estimating esds 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 > 2σ(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 | Occ. (<1) | |
O1 | 1.3180 (5) | 1.09147 (19) | 0.33644 (14) | 0.0620 (6) | |
N1 | 0.7459 (5) | 0.6838 (2) | 0.16816 (16) | 0.0402 (4) | |
N2 | 0.9591 (5) | 1.1260 (2) | 0.10902 (16) | 0.0377 (4) | 0.50 |
C9 | 0.9591 (5) | 1.1260 (2) | 0.10902 (16) | 0.0377 (4) | 0.50 |
H9A | 0.9331 | 1.2127 | 0.1798 | 0.045* | 0.50 |
C1 | 0.9713 (5) | 0.8073 (2) | 0.26845 (17) | 0.0339 (4) | |
C2 | 1.0530 (6) | 0.7939 (3) | 0.38842 (19) | 0.0435 (5) | |
H2A | 1.2108 | 0.8826 | 0.4556 | 0.052* | |
C3 | 0.8934 (7) | 0.6452 (3) | 0.4057 (2) | 0.0517 (6) | |
H3A | 0.9378 | 0.6331 | 0.4855 | 0.062* | |
C4 | 0.6689 (7) | 0.5157 (3) | 0.3033 (2) | 0.0524 (6) | |
H4A | 0.5633 | 0.4134 | 0.3120 | 0.063* | |
C5 | 0.6028 (6) | 0.5402 (3) | 0.1870 (2) | 0.0485 (6) | |
H5A | 0.4502 | 0.4519 | 0.1181 | 0.058* | |
C6 | 1.1320 (5) | 0.9691 (2) | 0.24786 (17) | 0.0372 (5) | |
C7 | 1.0544 (5) | 0.9809 (2) | 0.11607 (17) | 0.0333 (4) | |
C8 | 1.0969 (5) | 0.8553 (2) | 0.00732 (18) | 0.0369 (5) | |
H8A | 1.1642 | 0.7573 | 0.0141 | 0.044* |
U11 | U22 | U33 | U12 | U13 | U23 | |
O1 | 0.0862 (13) | 0.0422 (8) | 0.0381 (8) | −0.0157 (8) | −0.0097 (8) | 0.0113 (7) |
N1 | 0.0422 (10) | 0.0355 (8) | 0.0394 (9) | −0.0001 (7) | 0.0059 (7) | 0.0136 (7) |
N2 | 0.0467 (11) | 0.0295 (8) | 0.0341 (9) | 0.0035 (7) | 0.0096 (7) | 0.0092 (7) |
C9 | 0.0467 (11) | 0.0295 (8) | 0.0341 (9) | 0.0035 (7) | 0.0096 (7) | 0.0092 (7) |
C1 | 0.0360 (10) | 0.0330 (9) | 0.0334 (9) | 0.0065 (7) | 0.0077 (7) | 0.0128 (7) |
C2 | 0.0538 (13) | 0.0404 (10) | 0.0373 (10) | 0.0106 (9) | 0.0065 (9) | 0.0157 (8) |
C3 | 0.0712 (16) | 0.0510 (12) | 0.0471 (12) | 0.0209 (11) | 0.0180 (11) | 0.0299 (10) |
C4 | 0.0632 (15) | 0.0379 (10) | 0.0671 (15) | 0.0110 (10) | 0.0239 (12) | 0.0291 (10) |
C5 | 0.0511 (13) | 0.0355 (10) | 0.0534 (13) | −0.0015 (9) | 0.0097 (10) | 0.0140 (9) |
C6 | 0.0421 (11) | 0.0328 (9) | 0.0326 (9) | 0.0012 (8) | 0.0041 (8) | 0.0108 (7) |
C7 | 0.0333 (10) | 0.0298 (8) | 0.0335 (9) | −0.0016 (7) | 0.0047 (7) | 0.0116 (7) |
C8 | 0.0418 (11) | 0.0302 (8) | 0.0380 (10) | 0.0041 (7) | 0.0075 (8) | 0.0132 (7) |
O1—C6 | 1.216 (2) | C3—C4 | 1.372 (3) |
N1—C5 | 1.336 (3) | C3—H3A | 0.9300 |
N1—C1 | 1.341 (2) | C4—C5 | 1.383 (3) |
N2—C8i | 1.358 (2) | C4—H4A | 0.9300 |
N2—C7 | 1.360 (3) | C5—H5A | 0.9300 |
N2—H9A | 0.9207 | C6—C7 | 1.507 (2) |
C1—C2 | 1.386 (3) | C7—C8 | 1.385 (3) |
C1—C6 | 1.501 (3) | C8—C9i | 1.358 (2) |
C2—C3 | 1.385 (3) | C8—N2i | 1.358 (2) |
C2—H2A | 0.9300 | C8—H8A | 0.9300 |
C5—N1—C1 | 116.84 (17) | C5—C4—H4A | 120.6 |
C8i—N2—C7 | 118.59 (16) | N1—C5—C4 | 123.62 (19) |
C8i—N2—H9A | 118.5 | N1—C5—H5A | 118.2 |
C7—N2—H9A | 123.0 | C4—C5—H5A | 118.2 |
N1—C1—C2 | 123.47 (17) | O1—C6—C1 | 120.89 (17) |
N1—C1—C6 | 117.03 (16) | O1—C6—C7 | 119.68 (16) |
C2—C1—C6 | 119.48 (17) | C1—C6—C7 | 119.42 (15) |
C3—C2—C1 | 118.27 (19) | N2—C7—C8 | 120.92 (17) |
C3—C2—H2A | 120.9 | N2—C7—C6 | 116.89 (16) |
C1—C2—H2A | 120.9 | C8—C7—C6 | 122.09 (16) |
C4—C3—C2 | 119.06 (19) | C9i—C8—C7 | 120.49 (17) |
C4—C3—H3A | 120.5 | N2i—C8—C7 | 120.49 (17) |
C2—C3—H3A | 120.5 | C9i—C8—H8A | 119.8 |
C3—C4—C5 | 118.71 (18) | N2i—C8—H8A | 119.8 |
C3—C4—H4A | 120.6 | C7—C8—H8A | 119.8 |
C5—N1—C1—C2 | −1.5 (3) | C2—C1—C6—C7 | 177.66 (17) |
C5—N1—C1—C6 | −179.82 (19) | C8i—N2—C7—C8 | 0.5 (3) |
N1—C1—C2—C3 | 0.0 (3) | C8i—N2—C7—C6 | 177.03 (17) |
C6—C1—C2—C3 | 178.27 (19) | O1—C6—C7—N2 | −45.2 (3) |
C1—C2—C3—C4 | 1.6 (3) | C1—C6—C7—N2 | 133.4 (2) |
C2—C3—C4—C5 | −1.6 (4) | O1—C6—C7—C8 | 131.2 (2) |
C1—N1—C5—C4 | 1.5 (3) | C1—C6—C7—C8 | −50.2 (3) |
C3—C4—C5—N1 | 0.0 (4) | N2—C7—C8—C9i | −0.5 (3) |
N1—C1—C6—O1 | 174.7 (2) | C6—C7—C8—C9i | −176.85 (17) |
C2—C1—C6—O1 | −3.7 (3) | N2—C7—C8—N2i | −0.5 (3) |
N1—C1—C6—C7 | −4.0 (3) | C6—C7—C8—N2i | −176.85 (17) |
Symmetry code: (i) −x+2, −y+2, −z. |
Experimental details
Crystal data | |
Chemical formula | C17H11N3O2 |
Mr | 289.30 |
Crystal system, space group | Triclinic, P1 |
Temperature (K) | 293 |
a, b, c (Å) | 3.8453 (13), 8.447 (3), 11.202 (3) |
α, β, γ (°) | 108.672 (6), 97.251 (6), 99.772 (6) |
V (Å3) | 333.29 (19) |
Z | 1 |
Radiation type | Mo Kα |
µ (mm−1) | 0.10 |
Crystal size (mm) | 0.60 × 0.50 × 0.29 |
Data collection | |
Diffractometer | Bruker APEXII CCD area-detector diffractometer |
Absorption correction | Multi-scan SADABS (Bruker, 2007) |
Tmin, Tmax | 0.622, 1.000 |
No. of measured, independent and observed [I > 2σ(I)] reflections | 2301, 1623, 1198 |
Rint | 0.016 |
(sin θ/λ)max (Å−1) | 0.669 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.058, 0.177, 1.07 |
No. of reflections | 1623 |
No. of parameters | 100 |
H-atom treatment | H-atom parameters constrained |
Δρmax, Δρmin (e Å−3) | 0.31, −0.26 |
Computer programs: APEX2 (Bruker 2007), APEX2 and SAINT (Bruker 2007), SAINT (Bruker 2007), SHELXS97 (Sheldrick, 2008), SHELXL97 (Sheldrick, 2008), SHELXTL (Sheldrick, 2008) and PLATON (Spek, 2009).
Acknowledgements
The authors are grateful for financial support from the Science and Technology program, Beijing Municipal Education Commission.
References
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Di-2-pyridylmethanone has attracted great interest in recent years as it can exist in various forms in stabilizing its metal complexes, including its neat ketone form, singly and doubly deprotonated gem-diol forms, as well as the monoanion of its hemiacetal form (Papaefstathiou et al., 2002; Dendrinou-Samara et al., 2003; Crowder et al., 2004). Therefore, homolog compounds such as 2,6-pyridinediylbis(2-pyridyl)methanone (Chen et al., 2005) and 2,6-pyridinediylbis(3-pyridyl)methanone (Wan et al., 2008) were also synthesized and characterized.
In the present study, a new member of this family, namely 2,5-pyridinediylbis(2-pyridyl)methanone (C17H11N3O2), is reported. X-ray diffraction analysis shows that the N2 and C9 atoms of the 2,5-pyridinediyl ring have an equal occupancy at the same site. Thus the molecule is centrosymmetric with two 2-pyridyl methanone groups bonding to the 2,5-pyridinediyl ring at the 2 and 5 positions, respectively. The 2-pyridyl and the center 2,5-pyridinediyl rings exhibit a dihedral angle of 50.29 (9)° (Fig. 1). Along the a axis, the packing between the molecules is provided by weak un-covalent interaction only: /p-electron···/p-electron ring interaction. The distance between the centroids of the proximate pyridyl rings equals 3.845 (2) Å, as shown in Fig. 2.