organic compounds
2-(Phenylselenonyl)pyridine
aDepartment of Chemistry, D. A. V. College, Sector-10, Chandigarh, India, bDepartment of Chemistry & Centre of Advanced Studies in Chemistry, Panjab University, Chandigarh 160 014, India, cA.E. Favorsky Irkutsk Institute of Chemistry, 1 Favorsky Street, Irkutsk, RUS-664033, Russian Federation, and dDepartment of Chemistry, Howard University, 525 College Street NW, Washington, DC 20059, USA
*Correspondence e-mail: rbutcher99@yahoo.com
In the title compound, C11H9NO2Se, the pyridine and phenyl rings are almost perpendicular, with the dihedral angle between their mean planes being 79.16 (7)°. In the crystal, the molecules pack so as to form ruffled sheets in the (110) plane connected by weak C—H⋯O interactions. In addition, there are weak π–π interactions between the mean planes of both the phenyl [centroid–centroid perpendicular distance of 3.591 (2) Å and slippage of 1.854 (2) Å] and pyridine rings [centroid–centroid perpendicular distance of 3.348 (2) Å and slippage of 1.854 (2) Å].
CCDC reference: 969911
Related literature
For the pharmacological activity of selenone derivatives, see: Abdel-Hafez & Hussein (2008); Zhao et al. (2012); Hassan et al. (2011); Bhabak et al. (2011). For the chemistry of selenium compounds bonded directly to pyridine, see: Bhasin et al. (2013). For the synthesis of pharmaceuticals, see: Nogueira & Rocha (2011). For the synthesis of perfumes, fine chemicals and polymers, see: Zeng et al. (2013).
Experimental
Crystal data
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Data collection: CrysAlis PRO (Agilent, 2012); cell CrysAlis PRO; data reduction: CrysAlis PRO; 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
CCDC reference: 969911
10.1107/S1600536813029978/jj2170sup1.cif
contains datablocks I, New_Global_Publ_Block. DOI:Structure factors: contains datablock I. DOI: 10.1107/S1600536813029978/jj2170Isup2.hkl
Supporting information file. DOI: 10.1107/S1600536813029978/jj2170Isup3.cml
A stirred solution of 2-(phenylseleninyl)pyridine (0.235 g, 1 mmol) in glacial acetic acid (10 ml) was treated with (0.550 g, 3.5 mmol) potassium permanganate in small amounts. The reaction mixture was allowed to stir for 3 h at room temperature. The progress of the reaction mixture was monitored by thin layer
After completion of the reaction, the reaction mixture was neutralized with excess of of sodium bicarbonate and extracted with dichloromethane (4 x 25 ml). The combined organic extracts were washed with water and dried over anhydrous MgSO4. Dichloromethane was removed on a rota-evaporator that yielded a white powder. Single crystals of the compound suitable for XRD were prepared by dissolving the obtained white powder in a (1:1) mixture of CHCl3 and CCl4 followed by slow evaporation. Yield = 85%. M.p.= 453–455°K.All H atoms were placed in geometrically idealized positions and constrained to ride on their parent atoms with a C—H distance of 0.95 and Uiso (H) = 1.2Ueq(C).
Data collection: CrysAlis PRO (Agilent, 2012); cell
CrysAlis PRO (Agilent, 2012); data reduction: CrysAlis PRO (Agilent, 2012); 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. Molecular diagram of (I) illustrating the atom numbering scheme used. Thermal ellipsoids are at the 30% probability level. | |
Fig. 2. Fig, 2. Molecular packing for (I) viewed along the c axis. Dashed lines indicate the weak C—H···O intermolecular interactions forming ruffled sheets in the (1 1 0) plane. | |
Fig. 3. Molecular packing for (I) showing the π–π interactions between the mean planes of both the phenyl and pyridine rings. |
C11H9NO2Se | Z = 2 |
Mr = 266.15 | F(000) = 264 |
Triclinic, P1 | Dx = 1.704 Mg m−3 |
Hall symbol: -P 1 | Mo Kα radiation, λ = 0.71073 Å |
a = 6.1598 (5) Å | Cell parameters from 2941 reflections |
b = 7.7223 (6) Å | θ = 3.1–37.5° |
c = 11.4952 (7) Å | µ = 3.60 mm−1 |
α = 80.683 (6)° | T = 123 K |
β = 83.494 (6)° | Triangular plate, colorless |
γ = 74.614 (7)° | 0.50 × 0.26 × 0.16 mm |
V = 518.83 (7) Å3 |
Agilent Xcalibur (Ruby, Gemini) diffractometer | 5196 independent reflections |
Radiation source: Enhance (Mo) X-ray Source | 3965 reflections with I > 2σ(I) |
Graphite monochromator | Rint = 0.041 |
Detector resolution: 10.5081 pixels mm-1 | θmax = 37.6°, θmin = 3.1° |
ω scans | h = −10→10 |
Absorption correction: analytical (CrysAlis PRO and CrysAlis RED; Agilent, 2012) | k = −12→13 |
Tmin = 0.383, Tmax = 0.613 | l = −18→19 |
8688 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)] = 0.047 | Hydrogen site location: inferred from neighbouring sites |
wR(F2) = 0.090 | H-atom parameters constrained |
S = 1.01 | w = 1/[σ2(Fo2) + (0.0241P)2] where P = (Fo2 + 2Fc2)/3 |
5196 reflections | (Δ/σ)max < 0.001 |
136 parameters | Δρmax = 0.64 e Å−3 |
0 restraints | Δρmin = −0.76 e Å−3 |
C11H9NO2Se | γ = 74.614 (7)° |
Mr = 266.15 | V = 518.83 (7) Å3 |
Triclinic, P1 | Z = 2 |
a = 6.1598 (5) Å | Mo Kα radiation |
b = 7.7223 (6) Å | µ = 3.60 mm−1 |
c = 11.4952 (7) Å | T = 123 K |
α = 80.683 (6)° | 0.50 × 0.26 × 0.16 mm |
β = 83.494 (6)° |
Agilent Xcalibur (Ruby, Gemini) diffractometer | 5196 independent reflections |
Absorption correction: analytical (CrysAlis PRO and CrysAlis RED; Agilent, 2012) | 3965 reflections with I > 2σ(I) |
Tmin = 0.383, Tmax = 0.613 | Rint = 0.041 |
8688 measured reflections |
R[F2 > 2σ(F2)] = 0.047 | 0 restraints |
wR(F2) = 0.090 | H-atom parameters constrained |
S = 1.01 | Δρmax = 0.64 e Å−3 |
5196 reflections | Δρmin = −0.76 e Å−3 |
136 parameters |
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 | ||
Se | 0.80434 (4) | 0.23043 (3) | 0.224458 (18) | 0.02645 (6) | |
O1 | 1.0283 (3) | 0.2030 (2) | 0.13351 (14) | 0.0370 (4) | |
O2 | 0.6629 (3) | 0.0770 (2) | 0.24217 (15) | 0.0380 (4) | |
N1A | 0.6710 (4) | 0.6075 (3) | 0.17338 (18) | 0.0397 (5) | |
C1A | 0.5932 (3) | 0.4583 (3) | 0.17700 (17) | 0.0247 (4) | |
C2A | 0.3857 (3) | 0.4556 (3) | 0.14449 (17) | 0.0277 (4) | |
H2AA | 0.3426 | 0.3453 | 0.1487 | 0.033* | |
C3A | 0.2427 (4) | 0.6216 (4) | 0.10521 (19) | 0.0358 (5) | |
H3AA | 0.0978 | 0.6274 | 0.0816 | 0.043* | |
C4A | 0.3131 (5) | 0.7786 (3) | 0.1008 (2) | 0.0427 (6) | |
H4AA | 0.2166 | 0.8929 | 0.0741 | 0.051* | |
C5A | 0.5245 (5) | 0.7685 (3) | 0.1354 (2) | 0.0453 (7) | |
H5AA | 0.5696 | 0.8777 | 0.1327 | 0.054* | |
C1B | 0.8984 (4) | 0.2491 (3) | 0.37495 (17) | 0.0256 (4) | |
C2B | 0.7332 (4) | 0.3166 (3) | 0.45649 (18) | 0.0298 (4) | |
H2BA | 0.5799 | 0.3593 | 0.4382 | 0.036* | |
C3B | 0.7969 (4) | 0.3207 (4) | 0.5661 (2) | 0.0399 (6) | |
H3BA | 0.6853 | 0.3666 | 0.6251 | 0.048* | |
C4B | 1.0186 (4) | 0.2598 (3) | 0.5925 (2) | 0.0369 (5) | |
H4BA | 1.0587 | 0.2646 | 0.6691 | 0.044* | |
C5B | 1.1842 (4) | 0.1913 (3) | 0.50800 (19) | 0.0339 (5) | |
H5BA | 1.3373 | 0.1479 | 0.5267 | 0.041* | |
C6B | 1.1244 (4) | 0.1864 (3) | 0.39527 (18) | 0.0290 (4) | |
H6BA | 1.2344 | 0.1419 | 0.3351 | 0.035* |
U11 | U22 | U33 | U12 | U13 | U23 | |
Se | 0.02928 (11) | 0.02457 (10) | 0.02608 (11) | −0.00452 (8) | −0.00550 (7) | −0.00652 (8) |
O1 | 0.0355 (9) | 0.0416 (10) | 0.0296 (8) | 0.0001 (7) | 0.0011 (6) | −0.0110 (7) |
O2 | 0.0452 (10) | 0.0285 (8) | 0.0461 (10) | −0.0152 (7) | −0.0171 (8) | −0.0027 (7) |
N1A | 0.0512 (13) | 0.0364 (11) | 0.0364 (11) | −0.0169 (10) | −0.0067 (9) | −0.0069 (9) |
C1A | 0.0273 (9) | 0.0254 (9) | 0.0207 (8) | −0.0040 (7) | −0.0021 (7) | −0.0053 (7) |
C2A | 0.0274 (10) | 0.0341 (11) | 0.0219 (9) | −0.0085 (8) | 0.0002 (7) | −0.0044 (8) |
C3A | 0.0293 (11) | 0.0469 (14) | 0.0254 (10) | −0.0010 (10) | 0.0005 (8) | −0.0044 (10) |
C4A | 0.0578 (16) | 0.0332 (12) | 0.0253 (11) | 0.0083 (11) | 0.0003 (10) | −0.0052 (10) |
C5A | 0.078 (2) | 0.0304 (12) | 0.0326 (12) | −0.0202 (13) | −0.0063 (12) | −0.0063 (10) |
C1B | 0.0283 (10) | 0.0251 (9) | 0.0233 (9) | −0.0062 (8) | −0.0023 (7) | −0.0033 (8) |
C2B | 0.0265 (10) | 0.0337 (11) | 0.0262 (10) | −0.0013 (8) | −0.0007 (7) | −0.0070 (9) |
C3B | 0.0440 (14) | 0.0417 (14) | 0.0281 (11) | 0.0002 (11) | 0.0024 (9) | −0.0092 (10) |
C4B | 0.0481 (14) | 0.0371 (12) | 0.0248 (10) | −0.0079 (11) | −0.0055 (9) | −0.0051 (9) |
C5B | 0.0323 (11) | 0.0383 (12) | 0.0318 (11) | −0.0101 (10) | −0.0096 (9) | 0.0003 (10) |
C6B | 0.0255 (10) | 0.0334 (11) | 0.0271 (10) | −0.0071 (8) | −0.0004 (7) | −0.0032 (9) |
Se—O1 | 1.6218 (16) | C5A—H5AA | 0.9500 |
Se—O2 | 1.6234 (16) | C1B—C2B | 1.359 (3) |
Se—C1B | 1.9240 (19) | C1B—C6B | 1.381 (3) |
Se—C1A | 1.929 (2) | C2B—C3B | 1.368 (3) |
N1A—C1A | 1.354 (3) | C2B—H2BA | 0.9500 |
N1A—C5A | 1.367 (3) | C3B—C4B | 1.373 (3) |
C1A—C2A | 1.378 (3) | C3B—H3BA | 0.9500 |
C2A—C3A | 1.388 (3) | C4B—C5B | 1.385 (3) |
C2A—H2AA | 0.9500 | C4B—H4BA | 0.9500 |
C3A—C4A | 1.383 (4) | C5B—C6B | 1.395 (3) |
C3A—H3AA | 0.9500 | C5B—H5BA | 0.9500 |
C4A—C5A | 1.383 (4) | C6B—H6BA | 0.9500 |
C4A—H4AA | 0.9500 | ||
O1—Se—O2 | 117.59 (9) | N1A—C5A—H5AA | 118.8 |
O1—Se—C1B | 106.80 (8) | C4A—C5A—H5AA | 118.8 |
O2—Se—C1B | 109.14 (8) | C2B—C1B—C6B | 124.39 (19) |
O1—Se—C1A | 110.40 (9) | C2B—C1B—Se | 116.78 (16) |
O2—Se—C1A | 106.21 (9) | C6B—C1B—Se | 118.75 (15) |
C1B—Se—C1A | 106.17 (8) | C1B—C2B—C3B | 117.2 (2) |
C1A—N1A—C5A | 115.3 (2) | C1B—C2B—H2BA | 121.4 |
N1A—C1A—C2A | 126.1 (2) | C3B—C2B—H2BA | 121.4 |
N1A—C1A—Se | 115.30 (16) | C2B—C3B—C4B | 121.4 (2) |
C2A—C1A—Se | 118.53 (16) | C2B—C3B—H3BA | 119.3 |
C1A—C2A—C3A | 116.9 (2) | C4B—C3B—H3BA | 119.3 |
C1A—C2A—H2AA | 121.6 | C3B—C4B—C5B | 120.3 (2) |
C3A—C2A—H2AA | 121.6 | C3B—C4B—H4BA | 119.8 |
C4A—C3A—C2A | 119.4 (2) | C5B—C4B—H4BA | 119.8 |
C4A—C3A—H3AA | 120.3 | C4B—C5B—C6B | 119.5 (2) |
C2A—C3A—H3AA | 120.3 | C4B—C5B—H5BA | 120.3 |
C3A—C4A—C5A | 119.8 (2) | C6B—C5B—H5BA | 120.3 |
C3A—C4A—H4AA | 120.1 | C1B—C6B—C5B | 117.1 (2) |
C5A—C4A—H4AA | 120.1 | C1B—C6B—H6BA | 121.4 |
N1A—C5A—C4A | 122.5 (2) | C5B—C6B—H6BA | 121.4 |
C5A—N1A—C1A—C2A | 1.2 (3) | O1—Se—C1B—C2B | 164.23 (17) |
C5A—N1A—C1A—Se | 177.60 (16) | O2—Se—C1B—C2B | −67.68 (19) |
O1—Se—C1A—N1A | −60.19 (17) | C1A—Se—C1B—C2B | 46.41 (19) |
O2—Se—C1A—N1A | 171.30 (15) | O1—Se—C1B—C6B | −18.7 (2) |
C1B—Se—C1A—N1A | 55.21 (17) | O2—Se—C1B—C6B | 109.38 (18) |
O1—Se—C1A—C2A | 116.53 (16) | C1A—Se—C1B—C6B | −136.53 (18) |
O2—Se—C1A—C2A | −11.98 (18) | C6B—C1B—C2B—C3B | −0.6 (4) |
C1B—Se—C1A—C2A | −128.08 (16) | Se—C1B—C2B—C3B | 176.31 (18) |
N1A—C1A—C2A—C3A | −0.5 (3) | C1B—C2B—C3B—C4B | 0.3 (4) |
Se—C1A—C2A—C3A | −176.84 (14) | C2B—C3B—C4B—C5B | −0.3 (4) |
C1A—C2A—C3A—C4A | −0.1 (3) | C3B—C4B—C5B—C6B | 0.7 (4) |
C2A—C3A—C4A—C5A | 0.0 (3) | C2B—C1B—C6B—C5B | 0.9 (3) |
C1A—N1A—C5A—C4A | −1.2 (3) | Se—C1B—C6B—C5B | −175.90 (16) |
C3A—C4A—C5A—N1A | 0.7 (4) | C4B—C5B—C6B—C1B | −0.9 (3) |
D—H···A | D—H | H···A | D···A | D—H···A |
C2A—H2AA···O1i | 0.95 | 2.50 | 3.331 (3) | 146 |
C4A—H4AA···O1ii | 0.95 | 2.53 | 3.341 (3) | 143 |
C5A—H5AA···O2iii | 0.95 | 2.35 | 3.188 (3) | 146 |
Symmetry codes: (i) x−1, y, z; (ii) x−1, y+1, z; (iii) x, y+1, z. |
D—H···A | D—H | H···A | D···A | D—H···A |
C2A—H2AA···O1i | 0.95 | 2.50 | 3.331 (3) | 145.9 |
C4A—H4AA···O1ii | 0.95 | 2.53 | 3.341 (3) | 142.8 |
C5A—H5AA···O2iii | 0.95 | 2.35 | 3.188 (3) | 146.3 |
Symmetry codes: (i) x−1, y, z; (ii) x−1, y+1, z; (iii) x, y+1, z. |
Acknowledgements
This work was supported by the Department of Science and Technology, DST, New Delhi (Research Grant SR/S1/IC-37/2009). RJB wishes to acknowledge the NSF–MRI program (grant CHE-0619278) for funds to purchase the diffractometer as well as the Howard University Nanoscience Facility for access to liquid nitrogen.
References
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Organochalcogen compounds, especially containing selenium have continued to attract attention of researchers in academia as anti-cancer (Zhao et al., 2012), anti-oxidant (Hassan et al., 2011; Bhabak et al., 2011), anti-inflammatory and anti-allergic agents (Abdel-Hafez, & Hussein, 2008), and in industry because of their wide involvement as key intermediates for the synthesis of pharmaceuticals (Nogueira, & Rocha, 2011), perfumes, fine chemicals and polymers (Zeng et al., 2013). Curiously, compared to alkyl, aryl and mixed alkyl aryl selenium compounds, the chemistry of selenium compounds bonded directly to pyridine has not yet been exploited extensively (Bhasin et al. 2013). In continuation of our ongoing program directed at the synthesis of novel organoselenium derivatives, we report here the synthesis and crystal structure of 2-(phenylselenonyl)pyridine.
In the title compound, C11H9NO2Se, (I), the pyridine and phenyl rings are almost perpendicular with the dihedral angle between the mean planes being 79.16 (7)° (Fig. 1). The molecules pack so as to form ruffled sheets in the (1 1 0) plane connected by weak C—H···O intermolecular interactions (Fig. 2). In addition there are weak π–π interactions between both the phenyl groups (Cg···Cg perpendicular distance of 3.591 (2) Å with slippage of 1.854 (2) Å [2 -x, -y, 1 - z]) and pyridine rings (Cg···Cg perpendicular distance of 3.348 (2) Å with slippage of 1.854 (2) Å [1 -x, 1 - y, -z]) (Fig. 3).