organic compounds
1-Chloroacetyl-3-isopropyl-r-2,c-6-diphenylpiperidin-4-one
aCentre of Advanced Study in Crystallography and Biophysics, University of Madras, Guindy Campus, Chennai 600 025, India, and bDepartment of Chemistry, Government Arts College (Autonomous), Coimbatore 641 018, India
*Correspondence e-mail: mnpsy2004@yahoo.com
In the title compound, C22H24ClNO2, the piperidine ring adopts a distorted boat conformation. The dihedral angle between the two phenyl rings is 83.2 (1)°. In the crystal, the molecules are linked into chains running along the b axis by C—H⋯O hydrogen bonds. The Cl atom of the chloroacetyl group is disordered over two positions with occupancies of 0.66 (2) and 0.34 (2).
Related literature
For general background to piperidine derivatives, see: El-Subbagh et al. (2000); Jerom & Spencer (1988); Perumal et al. (2001); Hagenbach & Gysin (1952); Mobio et al. (1989); Katritzky & Fan (1990); Ganellin & Spickett (1965). For asymmetry and puckering parameters, see: Nardelli (1983); Cremer & Pople (1975). For hydrogen-bond motifs, see: Bernstein et al. (1995). For the synthesis, see: Venkatraj et al. (2008).
Experimental
Crystal data
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Refinement
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Data collection: APEX2 (Bruker, 2008); cell SAINT (Bruker, 2008); data reduction: SAINT; program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: ORTEP-3 (Farrugia, 1997); software used to prepare material for publication: SHELXL97 and PLATON (Spek, 2009).
Supporting information
https://doi.org/10.1107/S160053680905497X/ci2993sup1.cif
contains datablocks global, I. DOI:Structure factors: contains datablock I. DOI: https://doi.org/10.1107/S160053680905497X/ci2993Isup2.hkl
To a solution of r-2,c-6-diphenyl-3-isopropylpiperidin-4-one (2.93 g) in anhydrous benzene (60 ml) was added triethylamine (5.57 ml) and chloroacetylchloride (3.18 ml). The reaction mixture was allowed to stirr at room temperature for 2 h. The resulting solution was washed with sodium bicarbonate solution (10%) and water. Then the organic layer was dried over anhydrous sodium sulfate, evaporated and crystallized from benzene-petroleum ether (60–80°C) in the ratio of 9:1 (Venkatraj et al., 2008).
The Cl atom of the chloroacetyl group is disordered over two positions with refined occupancies of 0.662 (18) and 0.338 (18). H atoms were positioned geometrically (C-H = 0.93–0.98 Å) and allowed to ride on their parent atoms, with Uiso(H) = 1.5Ueq(Cmethyl) and 1.2Ueq(C).
Piperidine derivatives gained considerable importance owing to their varied biological properties such as antiviral, antitumour (El-Subbagh et al., 2000), analgesic (Jerom & Spencer, 1988), local anaesthetic (Perumal et al., 2001; Hagenbach & Gysin, 1952), antimicrobial, bactericidal, fungicidal, herbicidal, insecticidal, antihistaminic, anti-inflammatory, anticancer, CNS stimulant and depressant activities (Mobio et al., 1989; Katritzky & Fan, 1990; Ganellin & Spickett, 1965). In view of these importance and to ascertain the
crystallographic study of the title compound has been carried out.The ORTEP plot of the title molecule is shown in Fig.1. The piperidine ring adopts a distorted boat conformation with the puckering parameters (Cremer & Pople, 1975) and asymmetry parameters (Nardelli, 1983) of q2 = 0.661 (2) Å, q3 = -0.057 (2) Å, φ2 = 257.1 (1)° and Δs(C2 and C5)= 20.2 (2)°. The sum of the bond angles around the atom N1 (358.8°) of the piperidine ring is in accordance with the sp2 hybridization.
The crystal packing is stabilized by C—H···O intermolecular interactions which link the molecules into chains running along the b axis. These hydrogen bonds form R12(7) ring motifs (Bernstein et al., 1995).
For general background to piperidine derivatives, see: El-Subbagh et al. (2000); Jerom & Spencer (1988); Perumal et al. (2001); Hagenbach & Gysin (1952); Mobio et al. 1989; Katritzky & Fan (1990); Ganellin & Spickett (1965). For asymmetry and puckering parameters, see: Nardelli (1983); Cremer & Pople (1975). For hydrogen-bond motifs, see: Bernstein et al. (1995). For the synthesis, see: Venkatraj et al. (2008).
Data collection: APEX2 (Bruker, 2008); cell
SAINT (Bruker, 2008); data reduction: SAINT (Bruker, 2008); program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: ORTEP-3 (Farrugia, 1997); software used to prepare material for publication: SHELXL97 (Sheldrick, 2008) and PLATON (Spek, 2009).C22H24ClNO2 | F(000) = 784 |
Mr = 369.87 | Dx = 1.228 Mg m−3 |
Monoclinic, P21/n | Mo Kα radiation, λ = 0.71073 Å |
Hall symbol: -P 2yn | Cell parameters from 2052 reflections |
a = 10.3415 (12) Å | θ = 1.9–28.3° |
b = 9.0243 (9) Å | µ = 0.21 mm−1 |
c = 21.438 (2) Å | T = 293 K |
β = 90.894 (3)° | Block, colourless |
V = 2000.5 (4) Å3 | 0.23 × 0.23 × 0.20 mm |
Z = 4 |
Bruker SMART APEXII area-detector diffractometer | 4965 independent reflections |
Radiation source: fine-focus sealed tube | 3634 reflections with I > 2σ(I) |
Graphite monochromator | Rint = 0.026 |
ω and φ scans | θmax = 28.3°, θmin = 1.9° |
Absorption correction: multi-scan (SADABS; Bruker, 2008) | h = −13→13 |
Tmin = 0.954, Tmax = 0.960 | k = −11→12 |
19037 measured reflections | l = −28→26 |
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)] = 0.049 | Hydrogen site location: inferred from neighbouring sites |
wR(F2) = 0.152 | H-atom parameters constrained |
S = 1.05 | w = 1/[σ2(Fo2) + (0.073P)2 + 0.4534P] where P = (Fo2 + 2Fc2)/3 |
4965 reflections | (Δ/σ)max = 0.001 |
247 parameters | Δρmax = 0.51 e Å−3 |
0 restraints | Δρmin = −0.24 e Å−3 |
C22H24ClNO2 | V = 2000.5 (4) Å3 |
Mr = 369.87 | Z = 4 |
Monoclinic, P21/n | Mo Kα radiation |
a = 10.3415 (12) Å | µ = 0.21 mm−1 |
b = 9.0243 (9) Å | T = 293 K |
c = 21.438 (2) Å | 0.23 × 0.23 × 0.20 mm |
β = 90.894 (3)° |
Bruker SMART APEXII area-detector diffractometer | 4965 independent reflections |
Absorption correction: multi-scan (SADABS; Bruker, 2008) | 3634 reflections with I > 2σ(I) |
Tmin = 0.954, Tmax = 0.960 | Rint = 0.026 |
19037 measured reflections |
R[F2 > 2σ(F2)] = 0.049 | 0 restraints |
wR(F2) = 0.152 | H-atom parameters constrained |
S = 1.05 | Δρmax = 0.51 e Å−3 |
4965 reflections | Δρmin = −0.24 e Å−3 |
247 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 | Occ. (<1) | |
Cl1A | 0.4290 (5) | 0.2714 (5) | 0.19072 (9) | 0.0742 (9) | 0.662 (18) |
Cl1B | 0.4685 (12) | 0.2335 (12) | 0.2045 (7) | 0.097 (2) | 0.338 (18) |
O1 | 0.28951 (14) | 0.09562 (14) | 0.28351 (6) | 0.0649 (4) | |
O2 | −0.07198 (13) | 0.48645 (19) | 0.43316 (7) | 0.0758 (5) | |
N1 | 0.23607 (12) | 0.28293 (14) | 0.34870 (6) | 0.0385 (3) | |
C2 | 0.13248 (14) | 0.19074 (18) | 0.37710 (7) | 0.0416 (3) | |
H2 | 0.1191 | 0.1067 | 0.3488 | 0.050* | |
C3 | 0.00443 (15) | 0.2766 (2) | 0.37661 (7) | 0.0460 (4) | |
H3 | −0.0585 | 0.2166 | 0.3992 | 0.055* | |
C4 | 0.01886 (16) | 0.4218 (2) | 0.41130 (7) | 0.0494 (4) | |
C5 | 0.15466 (15) | 0.47860 (19) | 0.41923 (7) | 0.0446 (4) | |
H5A | 0.1910 | 0.4381 | 0.4576 | 0.053* | |
H5B | 0.1513 | 0.5854 | 0.4240 | 0.053* | |
C6 | 0.24626 (14) | 0.44202 (17) | 0.36585 (7) | 0.0382 (3) | |
H6 | 0.2197 | 0.5009 | 0.3294 | 0.046* | |
C7 | 0.30043 (16) | 0.22482 (18) | 0.29965 (7) | 0.0444 (4) | |
C8 | 0.39016 (18) | 0.3296 (2) | 0.26547 (8) | 0.0524 (4) | |
H8A | 0.4694 | 0.3406 | 0.2898 | 0.063* | 0.662 (18) |
H8B | 0.3495 | 0.4263 | 0.2627 | 0.063* | 0.662 (18) |
H8C | 0.3412 | 0.4109 | 0.2485 | 0.063* | 0.338 (18) |
H8D | 0.4536 | 0.3690 | 0.2941 | 0.063* | 0.338 (18) |
C9 | 0.17615 (15) | 0.12393 (18) | 0.43941 (7) | 0.0447 (4) | |
C10 | 0.2790 (2) | 0.0264 (2) | 0.43950 (10) | 0.0638 (5) | |
H10 | 0.3203 | 0.0062 | 0.4022 | 0.077* | |
C11 | 0.3221 (2) | −0.0420 (3) | 0.49375 (12) | 0.0769 (6) | |
H11 | 0.3916 | −0.1073 | 0.4927 | 0.092* | |
C12 | 0.2619 (2) | −0.0130 (3) | 0.54915 (10) | 0.0709 (6) | |
H12 | 0.2906 | −0.0582 | 0.5858 | 0.085* | |
C13 | 0.1599 (2) | 0.0821 (2) | 0.55003 (9) | 0.0656 (5) | |
H13 | 0.1190 | 0.1015 | 0.5875 | 0.079* | |
C14 | 0.11594 (18) | 0.1510 (2) | 0.49564 (8) | 0.0541 (4) | |
H14 | 0.0459 | 0.2154 | 0.4970 | 0.065* | |
C15 | −0.05025 (19) | 0.2994 (3) | 0.30908 (9) | 0.0619 (5) | |
H15 | 0.0186 | 0.3409 | 0.2835 | 0.074* | |
C16 | −0.0902 (4) | 0.1544 (3) | 0.28166 (14) | 0.1154 (12) | |
H16A | −0.0205 | 0.0847 | 0.2860 | 0.173* | |
H16B | −0.1114 | 0.1673 | 0.2382 | 0.173* | |
H16C | −0.1645 | 0.1177 | 0.3031 | 0.173* | |
C17 | −0.1643 (3) | 0.4015 (4) | 0.30539 (14) | 0.1232 (13) | |
H17A | −0.1407 | 0.4963 | 0.3223 | 0.185* | |
H17B | −0.2340 | 0.3606 | 0.3289 | 0.185* | |
H17C | −0.1912 | 0.4129 | 0.2626 | 0.185* | |
C18 | 0.38149 (15) | 0.49029 (18) | 0.38534 (7) | 0.0409 (3) | |
C19 | 0.41717 (19) | 0.6350 (2) | 0.37469 (9) | 0.0560 (4) | |
H19 | 0.3597 | 0.6991 | 0.3546 | 0.067* | |
C20 | 0.5382 (2) | 0.6861 (2) | 0.39369 (10) | 0.0674 (5) | |
H20 | 0.5611 | 0.7842 | 0.3866 | 0.081* | |
C21 | 0.62369 (19) | 0.5928 (3) | 0.42275 (10) | 0.0656 (5) | |
H21 | 0.7050 | 0.6270 | 0.4351 | 0.079* | |
C22 | 0.58976 (18) | 0.4492 (3) | 0.43370 (9) | 0.0631 (5) | |
H22 | 0.6483 | 0.3856 | 0.4533 | 0.076* | |
C23 | 0.46858 (17) | 0.3976 (2) | 0.41585 (8) | 0.0511 (4) | |
H23 | 0.4455 | 0.3002 | 0.4244 | 0.061* |
U11 | U22 | U33 | U12 | U13 | U23 | |
Cl1A | 0.1037 (17) | 0.0687 (12) | 0.0512 (8) | −0.0259 (10) | 0.0369 (7) | −0.0192 (6) |
Cl1B | 0.104 (4) | 0.077 (3) | 0.112 (4) | −0.017 (3) | 0.069 (3) | −0.030 (3) |
O1 | 0.0795 (9) | 0.0486 (7) | 0.0674 (8) | −0.0137 (7) | 0.0272 (7) | −0.0207 (6) |
O2 | 0.0458 (7) | 0.0976 (12) | 0.0841 (10) | 0.0165 (7) | 0.0073 (7) | −0.0291 (9) |
N1 | 0.0384 (6) | 0.0373 (7) | 0.0400 (6) | −0.0036 (5) | 0.0062 (5) | −0.0048 (5) |
C2 | 0.0383 (7) | 0.0427 (8) | 0.0440 (7) | −0.0064 (6) | 0.0049 (6) | −0.0035 (6) |
C3 | 0.0362 (8) | 0.0569 (10) | 0.0450 (8) | −0.0049 (7) | 0.0034 (6) | −0.0001 (7) |
C4 | 0.0422 (8) | 0.0618 (11) | 0.0444 (8) | 0.0076 (8) | 0.0042 (6) | −0.0040 (7) |
C5 | 0.0448 (8) | 0.0450 (9) | 0.0441 (8) | 0.0029 (7) | 0.0059 (6) | −0.0079 (7) |
C6 | 0.0395 (7) | 0.0365 (8) | 0.0388 (7) | 0.0011 (6) | 0.0025 (5) | −0.0034 (6) |
C7 | 0.0463 (8) | 0.0448 (9) | 0.0424 (7) | −0.0033 (7) | 0.0075 (6) | −0.0065 (6) |
C8 | 0.0616 (10) | 0.0507 (10) | 0.0456 (8) | −0.0037 (8) | 0.0173 (7) | −0.0050 (7) |
C9 | 0.0424 (8) | 0.0418 (9) | 0.0500 (8) | −0.0109 (7) | 0.0046 (6) | 0.0026 (7) |
C10 | 0.0636 (12) | 0.0599 (12) | 0.0682 (12) | 0.0076 (10) | 0.0117 (9) | 0.0112 (9) |
C11 | 0.0686 (13) | 0.0721 (15) | 0.0902 (16) | 0.0093 (11) | 0.0031 (11) | 0.0279 (12) |
C12 | 0.0746 (14) | 0.0682 (13) | 0.0694 (12) | −0.0138 (11) | −0.0121 (10) | 0.0241 (10) |
C13 | 0.0776 (14) | 0.0677 (13) | 0.0516 (10) | −0.0166 (11) | 0.0048 (9) | 0.0084 (9) |
C14 | 0.0557 (10) | 0.0535 (10) | 0.0531 (9) | −0.0055 (8) | 0.0062 (7) | 0.0021 (8) |
C15 | 0.0524 (10) | 0.0820 (14) | 0.0510 (9) | −0.0004 (10) | −0.0046 (8) | 0.0034 (9) |
C16 | 0.156 (3) | 0.101 (2) | 0.0880 (17) | 0.026 (2) | −0.0594 (19) | −0.0347 (16) |
C17 | 0.136 (3) | 0.129 (3) | 0.103 (2) | 0.055 (2) | −0.057 (2) | −0.0268 (19) |
C18 | 0.0414 (8) | 0.0422 (8) | 0.0393 (7) | −0.0018 (7) | 0.0064 (6) | −0.0080 (6) |
C19 | 0.0563 (10) | 0.0439 (10) | 0.0676 (11) | −0.0045 (8) | 0.0000 (8) | −0.0062 (8) |
C20 | 0.0657 (12) | 0.0539 (11) | 0.0829 (14) | −0.0205 (10) | 0.0043 (10) | −0.0130 (10) |
C21 | 0.0461 (10) | 0.0804 (15) | 0.0703 (12) | −0.0131 (10) | −0.0001 (8) | −0.0182 (11) |
C22 | 0.0493 (10) | 0.0743 (14) | 0.0653 (11) | 0.0028 (10) | −0.0079 (8) | −0.0049 (10) |
C23 | 0.0477 (9) | 0.0512 (10) | 0.0542 (9) | 0.0002 (8) | −0.0012 (7) | −0.0005 (7) |
Cl1A—C8 | 1.739 (3) | C10—H10 | 0.93 |
Cl1B—C8 | 1.774 (5) | C11—C12 | 1.375 (3) |
O1—C7 | 1.221 (2) | C11—H11 | 0.93 |
O2—C4 | 1.207 (2) | C12—C13 | 1.360 (3) |
N1—C7 | 1.3585 (19) | C12—H12 | 0.93 |
N1—C6 | 1.4853 (19) | C13—C14 | 1.391 (3) |
N1—C2 | 1.4936 (19) | C13—H13 | 0.93 |
C2—C9 | 1.527 (2) | C14—H14 | 0.93 |
C2—C3 | 1.534 (2) | C15—C16 | 1.491 (3) |
C2—H2 | 0.98 | C15—C17 | 1.497 (3) |
C3—C4 | 1.513 (2) | C15—H15 | 0.98 |
C3—C15 | 1.560 (2) | C16—H16A | 0.96 |
C3—H3 | 0.98 | C16—H16B | 0.96 |
C4—O2 | 1.207 (2) | C16—H16C | 0.96 |
C4—C5 | 1.502 (2) | C17—H17A | 0.96 |
C5—C6 | 1.533 (2) | C17—H17B | 0.96 |
C5—H5A | 0.97 | C17—H17C | 0.96 |
C5—H5B | 0.97 | C18—C19 | 1.377 (2) |
C6—C18 | 1.517 (2) | C18—C23 | 1.386 (2) |
C6—H6 | 0.98 | C19—C20 | 1.389 (3) |
C7—C8 | 1.521 (2) | C19—H19 | 0.93 |
C8—H8A | 0.97 | C20—C21 | 1.364 (3) |
C8—H8B | 0.97 | C20—H20 | 0.93 |
C8—H8C | 0.96 | C21—C22 | 1.363 (3) |
C8—H8D | 0.96 | C21—H21 | 0.93 |
C9—C10 | 1.381 (3) | C22—C23 | 1.385 (3) |
C9—C14 | 1.387 (2) | C22—H22 | 0.93 |
C10—C11 | 1.384 (3) | C23—H23 | 0.93 |
C7—N1—C6 | 122.07 (13) | C14—C9—C2 | 124.06 (16) |
C7—N1—C2 | 117.63 (13) | C9—C10—C11 | 121.5 (2) |
C6—N1—C2 | 119.08 (12) | C9—C10—H10 | 119.2 |
N1—C2—C9 | 111.86 (12) | C11—C10—H10 | 119.2 |
N1—C2—C3 | 109.90 (13) | C12—C11—C10 | 119.8 (2) |
C9—C2—C3 | 116.66 (13) | C12—C11—H11 | 120.1 |
N1—C2—H2 | 105.9 | C10—C11—H11 | 120.1 |
C9—C2—H2 | 105.9 | C13—C12—C11 | 119.58 (19) |
C3—C2—H2 | 105.9 | C13—C12—H12 | 120.2 |
C4—C3—C2 | 110.82 (13) | C11—C12—H12 | 120.2 |
C4—C3—C15 | 111.93 (15) | C12—C13—C14 | 120.90 (19) |
C2—C3—C15 | 111.93 (14) | C12—C13—H13 | 119.5 |
C4—C3—H3 | 107.3 | C14—C13—H13 | 119.5 |
C2—C3—H3 | 107.3 | C9—C14—C13 | 120.30 (19) |
C15—C3—H3 | 107.3 | C9—C14—H14 | 119.8 |
O2—C4—C5 | 121.54 (17) | C13—C14—H14 | 119.8 |
O2—C4—C3 | 122.57 (16) | C16—C15—C17 | 107.8 (2) |
C5—C4—C3 | 115.86 (14) | C16—C15—C3 | 110.14 (19) |
C4—C5—C6 | 115.44 (13) | C17—C15—C3 | 113.83 (18) |
C4—C5—H5A | 108.4 | C16—C15—H15 | 108.3 |
C6—C5—H5A | 108.4 | C17—C15—H15 | 108.3 |
C4—C5—H5B | 108.4 | C3—C15—H15 | 108.3 |
C6—C5—H5B | 108.4 | C15—C16—H16A | 109.5 |
H5A—C5—H5B | 107.5 | C15—C16—H16B | 109.5 |
N1—C6—C18 | 114.04 (12) | H16A—C16—H16B | 109.5 |
N1—C6—C5 | 110.53 (12) | C15—C16—H16C | 109.5 |
C18—C6—C5 | 108.07 (12) | H16A—C16—H16C | 109.5 |
N1—C6—H6 | 108.0 | H16B—C16—H16C | 109.5 |
C18—C6—H6 | 108.0 | C15—C17—H17A | 109.5 |
C5—C6—H6 | 108.0 | C15—C17—H17B | 109.5 |
O1—C7—N1 | 122.93 (15) | H17A—C17—H17B | 109.5 |
O1—C7—C8 | 120.78 (14) | C15—C17—H17C | 109.5 |
N1—C7—C8 | 116.28 (14) | H17A—C17—H17C | 109.5 |
C7—C8—Cl1A | 114.03 (15) | H17B—C17—H17C | 109.5 |
C7—C8—Cl1B | 109.9 (3) | C19—C18—C23 | 118.48 (16) |
C7—C8—H8A | 108.7 | C19—C18—C6 | 118.35 (15) |
Cl1A—C8—H8A | 108.7 | C23—C18—C6 | 123.11 (15) |
Cl1B—C8—H8A | 93.1 | C18—C19—C20 | 120.57 (19) |
C7—C8—H8B | 108.7 | C18—C19—H19 | 119.7 |
Cl1A—C8—H8B | 108.7 | C20—C19—H19 | 119.7 |
Cl1B—C8—H8B | 126.7 | C21—C20—C19 | 120.3 (2) |
H8A—C8—H8B | 107.6 | C21—C20—H20 | 119.9 |
C7—C8—H8C | 109.6 | C19—C20—H20 | 119.9 |
Cl1A—C8—H8C | 90.5 | C22—C21—C20 | 119.88 (18) |
Cl1B—C8—H8C | 109.7 | C22—C21—H21 | 120.1 |
H8A—C8—H8C | 124.2 | C20—C21—H21 | 120.1 |
C7—C8—H8D | 109.7 | C21—C22—C23 | 120.41 (19) |
Cl1A—C8—H8D | 122.4 | C21—C22—H22 | 119.8 |
Cl1B—C8—H8D | 109.7 | C23—C22—H22 | 119.8 |
H8B—C8—H8D | 89.9 | C22—C23—C18 | 120.39 (18) |
H8C—C8—H8D | 108.2 | C22—C23—H23 | 119.8 |
C10—C9—C14 | 117.86 (16) | C18—C23—H23 | 119.8 |
C10—C9—C2 | 118.04 (15) | ||
C7—N1—C2—C9 | 104.81 (16) | N1—C2—C9—C10 | −62.6 (2) |
C6—N1—C2—C9 | −87.54 (16) | C3—C2—C9—C10 | 169.66 (16) |
C7—N1—C2—C3 | −123.94 (15) | N1—C2—C9—C14 | 119.83 (17) |
C6—N1—C2—C3 | 43.72 (17) | C3—C2—C9—C14 | −7.9 (2) |
N1—C2—C3—C4 | −57.76 (16) | C14—C9—C10—C11 | −0.5 (3) |
C9—C2—C3—C4 | 70.91 (18) | C2—C9—C10—C11 | −178.19 (19) |
N1—C2—C3—C15 | 67.97 (17) | C9—C10—C11—C12 | 0.0 (3) |
C9—C2—C3—C15 | −163.36 (14) | C10—C11—C12—C13 | 0.3 (3) |
C2—C3—C4—O2 | −157.42 (17) | C11—C12—C13—C14 | −0.2 (3) |
C15—C3—C4—O2 | 76.9 (2) | C10—C9—C14—C13 | 0.6 (3) |
C2—C3—C4—C5 | 20.3 (2) | C2—C9—C14—C13 | 178.19 (16) |
C15—C3—C4—C5 | −105.41 (17) | C12—C13—C14—C9 | −0.3 (3) |
O2—C4—C5—C6 | −149.50 (17) | C4—C3—C15—C16 | −167.5 (2) |
C3—C4—C5—C6 | 32.7 (2) | C2—C3—C15—C16 | 67.4 (2) |
C7—N1—C6—C18 | −62.87 (18) | C4—C3—C15—C17 | −46.3 (3) |
C2—N1—C6—C18 | 130.04 (13) | C2—C3—C15—C17 | −171.4 (2) |
C7—N1—C6—C5 | 175.14 (14) | N1—C6—C18—C19 | 150.61 (14) |
C2—N1—C6—C5 | 8.06 (17) | C5—C6—C18—C19 | −86.06 (17) |
C4—C5—C6—N1 | −47.51 (19) | N1—C6—C18—C23 | −32.4 (2) |
C4—C5—C6—C18 | −172.94 (14) | C5—C6—C18—C23 | 90.93 (18) |
C6—N1—C7—O1 | −177.26 (16) | C23—C18—C19—C20 | 0.6 (3) |
C2—N1—C7—O1 | −10.0 (2) | C6—C18—C19—C20 | 177.69 (17) |
C6—N1—C7—C8 | 3.6 (2) | C18—C19—C20—C21 | 0.5 (3) |
C2—N1—C7—C8 | 170.82 (14) | C19—C20—C21—C22 | −0.6 (3) |
O1—C7—C8—Cl1A | 20.2 (3) | C20—C21—C22—C23 | −0.4 (3) |
N1—C7—C8—Cl1A | −160.6 (3) | C21—C22—C23—C18 | 1.5 (3) |
O1—C7—C8—Cl1B | −0.7 (7) | C19—C18—C23—C22 | −1.6 (3) |
N1—C7—C8—Cl1B | 178.5 (7) | C6—C18—C23—C22 | −178.55 (16) |
D—H···A | D—H | H···A | D···A | D—H···A |
C6—H6···O1i | 0.98 | 2.57 | 3.504 (2) | 160 |
C8—H8C···O1i | 0.96 | 2.25 | 3.203 (2) | 174 |
Symmetry code: (i) −x+1/2, y+1/2, −z+1/2. |
Experimental details
Crystal data | |
Chemical formula | C22H24ClNO2 |
Mr | 369.87 |
Crystal system, space group | Monoclinic, P21/n |
Temperature (K) | 293 |
a, b, c (Å) | 10.3415 (12), 9.0243 (9), 21.438 (2) |
β (°) | 90.894 (3) |
V (Å3) | 2000.5 (4) |
Z | 4 |
Radiation type | Mo Kα |
µ (mm−1) | 0.21 |
Crystal size (mm) | 0.23 × 0.23 × 0.20 |
Data collection | |
Diffractometer | Bruker SMART APEXII area-detector diffractometer |
Absorption correction | Multi-scan (SADABS; Bruker, 2008) |
Tmin, Tmax | 0.954, 0.960 |
No. of measured, independent and observed [I > 2σ(I)] reflections | 19037, 4965, 3634 |
Rint | 0.026 |
(sin θ/λ)max (Å−1) | 0.668 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.049, 0.152, 1.05 |
No. of reflections | 4965 |
No. of parameters | 247 |
H-atom treatment | H-atom parameters constrained |
Δρmax, Δρmin (e Å−3) | 0.51, −0.24 |
Computer programs: APEX2 (Bruker, 2008), SAINT (Bruker, 2008), SHELXS97 (Sheldrick, 2008), ORTEP-3 (Farrugia, 1997), SHELXL97 (Sheldrick, 2008) and PLATON (Spek, 2009).
D—H···A | D—H | H···A | D···A | D—H···A |
C6—H6···O1i | 0.98 | 2.57 | 3.504 (2) | 160 |
C8—H8C···O1i | 0.96 | 2.25 | 3.203 (2) | 174 |
Symmetry code: (i) −x+1/2, y+1/2, −z+1/2. |
Acknowledgements
KR thanks the GNR X-ray Facility, CAS in Crystallography and Biophysics, University of Madras, India, for the data collection and the management of Kandaswami Kandar's College, Velur, Namakkal, Tamil Nadu, India, for the encouragement to pursue the programme.
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This is an open-access article distributed under the terms of the Creative Commons Attribution (CC-BY) Licence, which permits unrestricted use, distribution, and reproduction in any medium, provided the original authors and source are cited.
Piperidine derivatives gained considerable importance owing to their varied biological properties such as antiviral, antitumour (El-Subbagh et al., 2000), analgesic (Jerom & Spencer, 1988), local anaesthetic (Perumal et al., 2001; Hagenbach & Gysin, 1952), antimicrobial, bactericidal, fungicidal, herbicidal, insecticidal, antihistaminic, anti-inflammatory, anticancer, CNS stimulant and depressant activities (Mobio et al., 1989; Katritzky & Fan, 1990; Ganellin & Spickett, 1965). In view of these importance and to ascertain the molecular conformation, crystallographic study of the title compound has been carried out.
The ORTEP plot of the title molecule is shown in Fig.1. The piperidine ring adopts a distorted boat conformation with the puckering parameters (Cremer & Pople, 1975) and asymmetry parameters (Nardelli, 1983) of q2 = 0.661 (2) Å, q3 = -0.057 (2) Å, φ2 = 257.1 (1)° and Δs(C2 and C5)= 20.2 (2)°. The sum of the bond angles around the atom N1 (358.8°) of the piperidine ring is in accordance with the sp2 hybridization.
The crystal packing is stabilized by C—H···O intermolecular interactions which link the molecules into chains running along the b axis. These hydrogen bonds form R12(7) ring motifs (Bernstein et al., 1995).