organic compounds
1,1′-(p-Phenylenedimethylene)dipiperidin-4-one
aOrganic Chemistry Division, School of Advanced Sciences, VIT University, Vellore 632 014, India, bDepartment of Physics, The Madura College, Madurai 625 011, India, cMaterials Research Centre, Indian Institute of Science, Bangalore 560 012, India, and dDepartment of Food Science and Technology, Faculty of Agriculture, University of Ruhuna, Mapalana, Kamburupitiya 81100, Sri Lanka
*Correspondence e-mail: nilanthalakshman@yahoo.co.uk
In the molecule of the title compound, C18H24N2O2, the piperidine rings are in chair conformations. The is stabilized by intermolecular C—H⋯O hydrogen bonding. There are neither C—H⋯π nor π–π interactions in the structure.
Related literature
For hydrogen-bond motifs, see: Bernstein et al. (1995). For ring puckering parameters, see Cremer & Pople (1975).
Experimental
Crystal data
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Refinement
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Data collection: SMART (Bruker, 2001); cell SAINT (Bruker, 2001); data reduction: SAINT; program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: PLATON (Spek, 2009); software used to prepare material for publication: SHELXL97.
Supporting information
10.1107/S1600536809052908/bt5127sup1.cif
contains datablocks global, I. DOI:Structure factors: contains datablock I. DOI: 10.1107/S1600536809052908/bt5127Isup2.hkl
A mixture of 4-piperidone monohydrate hydrochloride (2 mol), 1,4-bis(bromomethyl)benzene (1 mol) and potassium carbonate (6 mol) in anhydrous benzene was refluxed for 7 h. The completion of reaction was monitored by TLC. Potassium carbonate was filtered off and the excess solvent was removed under reduced pressure. The solid obtained was purified over a column of silica gel (60–120 mesh size) using benzene-ethyl acetate (60–80 °C) in the ratio of 20:80. Yield: 40% m.p. 289°C.
The H atoms were placed in calculated positions and allowed to ride on their carrier atoms with C—H = 0.93–0.97 Å.Uiso = 1.2Ueq(C) for CH and CH2 groups.
Data collection: SMART (Bruker, 2001); cell
SAINT (Bruker, 2001); data reduction: SAINT (Bruker, 2001); program(s) used to solve structure: SHELXS (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: PLATON (Spek, 2009); software used to prepare material for publication: SHELXL97 (Sheldrick, 2008).Fig. 1. The molecular structure of title compound with atom numbering scheme and 50% probability displacement ellipsoids. |
C18H24N2O2 | F(000) = 324 |
Mr = 300.39 | Dx = 1.249 Mg m−3 |
Monoclinic, P21/n | Mo Kα radiation, λ = 0.71073 Å |
Hall symbol: -P 2yn | Cell parameters from 2500 reflections |
a = 6.2701 (5) Å | θ = 2–30° |
b = 8.0990 (6) Å | µ = 0.08 mm−1 |
c = 15.8978 (13) Å | T = 293 K |
β = 98.275 (2)° | Block, colourless |
V = 798.91 (11) Å3 | 0.19 × 0.17 × 0.15 mm |
Z = 2 |
Bruker SMART APEX CCD diffractometer | 1826 independent reflections |
Radiation source: fine-focus sealed tube | 1424 reflections with I > 2σ(I) |
Graphite monochromator | Rint = 0.014 |
ω scans | θmax = 27.5°, θmin = 2.6° |
Absorption correction: multi-scan (SADABS; Bruker, 1998) | h = −8→4 |
Tmin = 0.984, Tmax = 0.987 | k = −10→10 |
4782 measured reflections | l = −20→19 |
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)] = 0.043 | Hydrogen site location: inferred from neighbouring sites |
wR(F2) = 0.123 | H-atom parameters constrained |
S = 1.05 | w = 1/[σ2(Fo2) + (0.0639P)2 + 0.1074P] where P = (Fo2 + 2Fc2)/3 |
1826 reflections | (Δ/σ)max < 0.001 |
100 parameters | Δρmax = 0.20 e Å−3 |
0 restraints | Δρmin = −0.14 e Å−3 |
C18H24N2O2 | V = 798.91 (11) Å3 |
Mr = 300.39 | Z = 2 |
Monoclinic, P21/n | Mo Kα radiation |
a = 6.2701 (5) Å | µ = 0.08 mm−1 |
b = 8.0990 (6) Å | T = 293 K |
c = 15.8978 (13) Å | 0.19 × 0.17 × 0.15 mm |
β = 98.275 (2)° |
Bruker SMART APEX CCD diffractometer | 1826 independent reflections |
Absorption correction: multi-scan (SADABS; Bruker, 1998) | 1424 reflections with I > 2σ(I) |
Tmin = 0.984, Tmax = 0.987 | Rint = 0.014 |
4782 measured reflections |
R[F2 > 2σ(F2)] = 0.043 | 0 restraints |
wR(F2) = 0.123 | H-atom parameters constrained |
S = 1.05 | Δρmax = 0.20 e Å−3 |
1826 reflections | Δρmin = −0.14 e Å−3 |
100 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 | ||
C2 | 0.2931 (2) | 0.43945 (15) | 0.38729 (9) | 0.0451 (3) | |
H2A | 0.3278 | 0.4330 | 0.3299 | 0.054* | |
H2B | 0.4196 | 0.4060 | 0.4260 | 0.054* | |
C3 | 0.2358 (2) | 0.61783 (16) | 0.40660 (10) | 0.0544 (4) | |
H3A | 0.2191 | 0.6276 | 0.4661 | 0.065* | |
H3B | 0.3519 | 0.6905 | 0.3959 | 0.065* | |
C4 | 0.0312 (2) | 0.66908 (16) | 0.35253 (8) | 0.0440 (3) | |
C5 | −0.1488 (2) | 0.54905 (18) | 0.35354 (11) | 0.0584 (4) | |
H5A | −0.2680 | 0.5796 | 0.3105 | 0.070* | |
H5B | −0.1991 | 0.5528 | 0.4084 | 0.070* | |
C6 | −0.0757 (2) | 0.37490 (18) | 0.33662 (10) | 0.0544 (4) | |
H6A | −0.1918 | 0.2982 | 0.3419 | 0.065* | |
H6B | −0.0434 | 0.3682 | 0.2789 | 0.065* | |
C7 | 0.1742 (2) | 0.15730 (16) | 0.37561 (9) | 0.0493 (4) | |
H7A | 0.2250 | 0.1575 | 0.3208 | 0.059* | |
H7B | 0.0458 | 0.0891 | 0.3705 | 0.059* | |
C8 | 0.3452 (2) | 0.07991 (14) | 0.44028 (8) | 0.0405 (3) | |
C9 | 0.3083 (2) | 0.05404 (16) | 0.52331 (8) | 0.0450 (3) | |
H9 | 0.1799 | 0.0900 | 0.5400 | 0.054* | |
C10 | 0.5395 (2) | 0.02482 (16) | 0.41824 (8) | 0.0444 (3) | |
H10 | 0.5682 | 0.0411 | 0.3631 | 0.053* | |
N1 | 0.11571 (16) | 0.32682 (12) | 0.39582 (7) | 0.0395 (3) | |
O1 | 0.01374 (19) | 0.79483 (13) | 0.31091 (7) | 0.0657 (4) |
U11 | U22 | U33 | U12 | U13 | U23 | |
C2 | 0.0372 (6) | 0.0349 (7) | 0.0605 (8) | −0.0033 (5) | −0.0021 (5) | 0.0041 (6) |
C3 | 0.0595 (8) | 0.0329 (7) | 0.0659 (9) | −0.0062 (6) | −0.0079 (7) | 0.0018 (6) |
C4 | 0.0549 (8) | 0.0322 (6) | 0.0448 (7) | 0.0048 (5) | 0.0072 (6) | 0.0015 (5) |
C5 | 0.0415 (7) | 0.0509 (9) | 0.0821 (10) | 0.0057 (6) | 0.0064 (7) | 0.0227 (7) |
C6 | 0.0423 (7) | 0.0422 (8) | 0.0731 (10) | −0.0085 (6) | −0.0107 (7) | 0.0130 (7) |
C7 | 0.0586 (8) | 0.0308 (7) | 0.0540 (8) | −0.0024 (6) | −0.0075 (6) | −0.0006 (6) |
C8 | 0.0502 (7) | 0.0233 (5) | 0.0464 (7) | −0.0019 (5) | 0.0015 (5) | −0.0002 (5) |
C9 | 0.0462 (7) | 0.0374 (7) | 0.0528 (8) | 0.0024 (5) | 0.0113 (6) | −0.0021 (5) |
C10 | 0.0573 (8) | 0.0368 (7) | 0.0401 (6) | −0.0039 (6) | 0.0106 (6) | 0.0016 (5) |
N1 | 0.0389 (5) | 0.0288 (5) | 0.0484 (6) | −0.0026 (4) | −0.0022 (4) | 0.0059 (4) |
O1 | 0.0827 (8) | 0.0385 (6) | 0.0723 (7) | −0.0004 (5) | −0.0012 (6) | 0.0175 (5) |
C2—N1 | 1.4598 (16) | C6—H6A | 0.9700 |
C2—C3 | 1.5304 (18) | C6—H6B | 0.9700 |
C2—H2A | 0.9700 | C7—N1 | 1.4685 (17) |
C2—H2B | 0.9700 | C7—C8 | 1.5104 (18) |
C3—C4 | 1.4964 (19) | C7—H7A | 0.9700 |
C3—H3A | 0.9700 | C7—H7B | 0.9700 |
C3—H3B | 0.9700 | C8—C9 | 1.3884 (18) |
C4—O1 | 1.2109 (16) | C8—C10 | 1.3888 (19) |
C4—C5 | 1.492 (2) | C9—C10i | 1.3882 (18) |
C5—C6 | 1.519 (2) | C9—H9 | 0.9300 |
C5—H5A | 0.9700 | C10—C9i | 1.3882 (18) |
C5—H5B | 0.9700 | C10—H10 | 0.9300 |
C6—N1 | 1.4670 (16) | ||
N1—C2—C3 | 111.55 (11) | C5—C6—H6A | 109.2 |
N1—C2—H2A | 109.3 | N1—C6—H6B | 109.2 |
C3—C2—H2A | 109.3 | C5—C6—H6B | 109.2 |
N1—C2—H2B | 109.3 | H6A—C6—H6B | 107.9 |
C3—C2—H2B | 109.3 | N1—C7—C8 | 114.47 (10) |
H2A—C2—H2B | 108.0 | N1—C7—H7A | 108.6 |
C4—C3—C2 | 110.67 (11) | C8—C7—H7A | 108.6 |
C4—C3—H3A | 109.5 | N1—C7—H7B | 108.6 |
C2—C3—H3A | 109.5 | C8—C7—H7B | 108.6 |
C4—C3—H3B | 109.5 | H7A—C7—H7B | 107.6 |
C2—C3—H3B | 109.5 | C9—C8—C10 | 117.61 (11) |
H3A—C3—H3B | 108.1 | C9—C8—C7 | 120.72 (12) |
O1—C4—C5 | 123.01 (13) | C10—C8—C7 | 121.59 (12) |
O1—C4—C3 | 123.37 (13) | C10i—C9—C8 | 120.89 (12) |
C5—C4—C3 | 113.62 (11) | C10i—C9—H9 | 119.6 |
C4—C5—C6 | 110.77 (12) | C8—C9—H9 | 119.6 |
C4—C5—H5A | 109.5 | C9i—C10—C8 | 121.50 (12) |
C6—C5—H5A | 109.5 | C9i—C10—H10 | 119.3 |
C4—C5—H5B | 109.5 | C8—C10—H10 | 119.3 |
C6—C5—H5B | 109.5 | C2—N1—C6 | 109.77 (10) |
H5A—C5—H5B | 108.1 | C2—N1—C7 | 110.25 (11) |
N1—C6—C5 | 111.90 (12) | C6—N1—C7 | 108.36 (10) |
N1—C6—H6A | 109.2 | ||
N1—C2—C3—C4 | −54.57 (16) | C7—C8—C9—C10i | 176.62 (11) |
C2—C3—C4—O1 | −129.37 (15) | C9—C8—C10—C9i | 0.3 (2) |
C2—C3—C4—C5 | 49.69 (17) | C7—C8—C10—C9i | −176.59 (12) |
O1—C4—C5—C6 | 129.33 (15) | C3—C2—N1—C6 | 59.82 (15) |
C3—C4—C5—C6 | −49.73 (18) | C3—C2—N1—C7 | 179.12 (11) |
C4—C5—C6—N1 | 54.57 (17) | C5—C6—N1—C2 | −60.02 (16) |
N1—C7—C8—C9 | 62.64 (17) | C5—C6—N1—C7 | 179.53 (12) |
N1—C7—C8—C10 | −120.58 (14) | C8—C7—N1—C2 | 69.70 (15) |
C10—C8—C9—C10i | −0.3 (2) | C8—C7—N1—C6 | −170.15 (12) |
Symmetry code: (i) −x+1, −y, −z+1. |
D—H···A | D—H | H···A | D···A | D—H···A |
C7—H7B···O1ii | 0.97 | 2.56 | 3.2235 (17) | 126 |
Symmetry code: (ii) x, y−1, z. |
Experimental details
Crystal data | |
Chemical formula | C18H24N2O2 |
Mr | 300.39 |
Crystal system, space group | Monoclinic, P21/n |
Temperature (K) | 293 |
a, b, c (Å) | 6.2701 (5), 8.0990 (6), 15.8978 (13) |
β (°) | 98.275 (2) |
V (Å3) | 798.91 (11) |
Z | 2 |
Radiation type | Mo Kα |
µ (mm−1) | 0.08 |
Crystal size (mm) | 0.19 × 0.17 × 0.15 |
Data collection | |
Diffractometer | Bruker SMART APEX CCD diffractometer |
Absorption correction | Multi-scan (SADABS; Bruker, 1998) |
Tmin, Tmax | 0.984, 0.987 |
No. of measured, independent and observed [I > 2σ(I)] reflections | 4782, 1826, 1424 |
Rint | 0.014 |
(sin θ/λ)max (Å−1) | 0.649 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.043, 0.123, 1.05 |
No. of reflections | 1826 |
No. of parameters | 100 |
H-atom treatment | H-atom parameters constrained |
Δρmax, Δρmin (e Å−3) | 0.20, −0.14 |
Computer programs: SMART (Bruker, 2001), SAINT (Bruker, 2001), SHELXS (Sheldrick, 2008), SHELXL97 (Sheldrick, 2008), PLATON (Spek, 2009).
D—H···A | D—H | H···A | D···A | D—H···A |
C7—H7B···O1i | 0.97 | 2.56 | 3.2235 (17) | 125.5 |
Symmetry code: (i) x, y−1, z. |
Acknowledgements
VV thanks the DST-India for funding through the Young Scientist-Fast Track Proposal.
References
Bernstein, J., Davis, R. E., Shimoni, L. & Chang, N. L. (1995). Angew. Chem. Int. Ed. Engl. 34, 1555–1573. CrossRef CAS Web of Science Google Scholar
Bruker (1998). SADABS. Bruker AXS Inc., Madison, Wisconsin, USA. Google Scholar
Bruker (2001). SMART and SAINT. Bruker AXS Inc., Madison, Wisconsin, USA. Google Scholar
Cremer, D. & Pople, J. A. (1975). J. Am. Chem. Soc. 97, 1354–1358. CrossRef CAS Web of Science Google Scholar
Sheldrick, G. M. (2008). Acta Cryst. A64, 112–122. Web of Science CrossRef CAS IUCr Journals Google Scholar
Spek, A. L. (2009). Acta Cryst. D65, 148–155. Web of Science CrossRef CAS IUCr Journals Google Scholar
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The configuration and conformation of the title compound, (I) and the atom numbering scheme are shown in the ORTEP drawing (Fig. 1). The piperidone ring exibits chair conformation as evident from the puckering parameters (Q)=0.549 (1) Å, θ = 173.4 (2) °, ψ = 181.9 (1) ° (Cremer & Pople, 1975).
In the crystal structure, an intermolecular C—H···O bond is found generating R22(24) motif (Bernstein et al., 1995).