organic compounds
(3E,5E)-3,5-Bis(4-methylbenzylidene)-1-[3-(piperidin-1-yl)propanoyl]piperidin-4-one
aSchool of Chemical Sciences, Universiti Sains Malaysia, 11800 USM, Penang, Malaysia, bSchool of Pharmaceutical Sciences, Universiti Sains Malaysia, 11800 USM, Penang, Malaysia, and cSchool of Physics, Universiti Sains Malaysia, 11800 USM, Penang, Malaysia
*Correspondence e-mail: arazaki@usm.my
In the title compound, C29H34N2O2, the central piperidine ring adopts a half-chair conformation, whereas the terminal one adopts a chair conformation. The mean plane of the central piperidine ring [maximum deviation = 0.384 (2) Å] makes dihedral angles of 64.82 (13) and 17.55 (13)° with the benzene rings. In the crystal, molecules are linked into a tape along the b axis via C—H⋯O interactions, generating R22(20) and R21(6) graph-set motifs. C—H⋯π interactions are observed between the tapes.
Related literature
For biological activities of α,β-unsaturated see: Tanaka et al. (2003); Nakayachi et al. (2004); Lee et al. (2004); Hertzberg et al. (1989). For ring conformations, see: Cremer & Pople (1975). For related structures, see: Aridoss et al. (2010); Kia et al. (2011). For graph-set motifs, see: Bernstein et al. (1995). For the preparation of 1-acryloyl-3,5-dibenzylidenepiperidin-4-one, see: Dimmock et al. (2001). For the stability of the temperature controller used for data collection, see: Cosier & Glazer (1986).
Experimental
Crystal data
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Refinement
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Data collection: APEX2 (Bruker, 2009); cell SAINT (Bruker, 2009); data reduction: SAINT; program(s) used to solve structure: SHELXTL (Sheldrick, 2008); program(s) used to refine structure: SHELXTL; molecular graphics: SHELXTL; software used to prepare material for publication: SHELXTL and PLATON (Spek, 2009).
Supporting information
https://doi.org/10.1107/S1600536812031820/is5165sup1.cif
contains datablocks global, I. DOI:Structure factors: contains datablock I. DOI: https://doi.org/10.1107/S1600536812031820/is5165Isup2.hkl
Supporting information file. DOI: https://doi.org/10.1107/S1600536812031820/is5165Isup3.cml
1-Acryloyl-3,5-dibenzylidenepiperidin-4-one was synthesized as reported in the literature (Dimmock et al., 2001). The title compound was prepared by refluxing 1-acryloyl-3,5-dibenzylidenepiperidin-4-one (0.6 mmol) with piperidine (0.6 mmol) in ethanol. After completion of the reaction as evident from TLC, the mixture was poured into ice. The precipitated solid was filtered and washed with water. The pure solid was then recrystallized from ethanol to afford the title compound as yellow crystals.
All H atoms were positioned geometrically (C—H = 0.95–0.99 Å) and refined using a riding model with Uiso(H) = 1.2 or 1.5Ueq(C). A rotating group model was applied to the methyl groups.
Claisen-Schmidt condensation reaction between aldehyde and ketone, leads to biological active class of compound, namely α,β-unsaturated These compounds show a wide range of biological activities such as enzyme inhibitory (Tanaka et al., 2003), cytotoxic and antitumor (Nakayachi et al., 2004). This O═CH—CH═CH2 is the key moiety which promotes the bioactivities in the title compound (Lee et al., 2004). α, β-unsaturated can be considered as a Michael acceptor which is an active moiety showing enzyme inhibitory activity (Hertzberg et al., 1989). Due to these reasons, the determination of the title compound was carried out and the results are presented in this paper.
The molecular structure is shown in Fig. 1. The bond lengths and angles are within normal ranges and comparable to the related structures (Aridoss et al., 2010; Kia et al., 2011). The piperidine rings (N1/C8–C12 and N2/C25–C29) adopt different conformations (Cremer & Pople, 1975). N1/C8–C12 adopts a half-chair conformation [puckering parameters, Q= 0.556 (3) Å, Θ= 117.4 (3)° and Φ= 157.4 (3)°], whereas, N2/C25–C29 adopts a chair conformation [puckering parameters, Q= 0.573 (3) Å, Θ= 3.3 (3)° and Φ= 329 (5)°]. The least square plane through both rings form a dihedral angle of 18.29 (13)° between them. The least-square plane of the central piperidine ring [N1/C8–C12, maximum deviation of 0.384 (2) Å at atom N1] forms dihedral angles of 64.82 (13) and 17.55 (13)°, respectively, with the pendant benzene rings (C1–C6 and C14–C19).
In the crystal packing (Fig. 2), molecules are linked into a tape along the b axis via intermolecular C16—H16A···O2, C21—H21A···O2 and C21—H21C···O1 interactions (Table 1), generating R22(20) and R12(6) graph-set motifs (Bernstein et al., 1995). The
is further stabilized by the intermolecular C4—H4A···Cg1 and C27—H27A···Cg1 (Table 1) interactions (Cg1 is the centroid of the benzene ring, C14–C19).For biological activities of α,β-unsaturated see: Tanaka et al. (2003); Nakayachi et al. (2004); Lee et al. (2004); Hertzberg et al. (1989). For ring conformations, see: Cremer & Pople (1975). For related structures, see: Aridoss et al. (2010); Kia et al. (2011). For graph-set motifs, see: Bernstein et al. (1995). For the preparation of 1-acryloyl-3,5-dibenzylidenepiperidin-4-one, see: Dimmock et al. (2001). For the stability of the temperature controller used for data collection, see: Cosier & Glazer (1986).
Data collection: APEX2 (Bruker, 2009); cell
SAINT (Bruker, 2009); data reduction: SAINT (Bruker, 2009); program(s) used to solve structure: SHELXTL (Sheldrick, 2008); program(s) used to refine structure: SHELXTL (Sheldrick, 2008); molecular graphics: SHELXTL (Sheldrick, 2008); software used to prepare material for publication: SHELXTL (Sheldrick, 2008) and PLATON (Spek, 2009).Fig. 1. The molecular structure of the title compound, showing 50% probability displacement ellipsoids and the atom-numbering scheme. | |
Fig. 2. The crystal packing of the title compound. The H atoms not involved in the intermolecular interactions (dashed lines) have been omitted for clarity. |
C29H34N2O2 | F(000) = 952 |
Mr = 442.58 | Dx = 1.221 Mg m−3 |
Monoclinic, P21/c | Mo Kα radiation, λ = 0.71073 Å |
Hall symbol: -P 2ybc | Cell parameters from 3337 reflections |
a = 12.2913 (8) Å | θ = 2.3–29.9° |
b = 9.9753 (8) Å | µ = 0.08 mm−1 |
c = 19.9993 (14) Å | T = 100 K |
β = 100.884 (4)° | Block, yellow |
V = 2408.0 (3) Å3 | 0.46 × 0.25 × 0.20 mm |
Z = 4 |
Bruker SMART APEXII CCD area-detector diffractometer | 6852 independent reflections |
Radiation source: fine-focus sealed tube | 3483 reflections with I > I > 2σ(I) |
Graphite monochromator | Rint = 0.075 |
φ and ω scans | θmax = 30.0°, θmin = 1.7° |
Absorption correction: multi-scan (SADABS; Bruker, 2009) | h = −17→17 |
Tmin = 0.966, Tmax = 0.985 | k = −13→11 |
18968 measured reflections | l = −26→28 |
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)] = 0.078 | Hydrogen site location: inferred from neighbouring sites |
wR(F2) = 0.228 | H-atom parameters constrained |
S = 1.04 | w = 1/[σ2(Fo2) + (0.097P)2 + 0.6841P] where P = (Fo2 + 2Fc2)/3 |
6852 reflections | (Δ/σ)max < 0.001 |
300 parameters | Δρmax = 0.38 e Å−3 |
0 restraints | Δρmin = −0.37 e Å−3 |
C29H34N2O2 | V = 2408.0 (3) Å3 |
Mr = 442.58 | Z = 4 |
Monoclinic, P21/c | Mo Kα radiation |
a = 12.2913 (8) Å | µ = 0.08 mm−1 |
b = 9.9753 (8) Å | T = 100 K |
c = 19.9993 (14) Å | 0.46 × 0.25 × 0.20 mm |
β = 100.884 (4)° |
Bruker SMART APEXII CCD area-detector diffractometer | 6852 independent reflections |
Absorption correction: multi-scan (SADABS; Bruker, 2009) | 3483 reflections with I > I > 2σ(I) |
Tmin = 0.966, Tmax = 0.985 | Rint = 0.075 |
18968 measured reflections |
R[F2 > 2σ(F2)] = 0.078 | 0 restraints |
wR(F2) = 0.228 | H-atom parameters constrained |
S = 1.04 | Δρmax = 0.38 e Å−3 |
6852 reflections | Δρmin = −0.37 e Å−3 |
300 parameters |
Experimental. The crystal was placed in the cold stream of an Oxford Cryosystems Cobra open-flow nitrogen cryostat (Cosier & Glazer, 1986) operating at 100.0 (1) K. |
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 | ||
O1 | 0.33838 (15) | 0.3747 (2) | 0.18190 (10) | 0.0257 (5) | |
O2 | 0.26832 (17) | −0.1316 (2) | 0.11812 (11) | 0.0389 (6) | |
N1 | 0.39181 (18) | −0.0171 (2) | 0.19541 (11) | 0.0226 (5) | |
N2 | 0.58294 (18) | −0.2400 (2) | 0.05042 (11) | 0.0229 (5) | |
C1 | 0.6704 (2) | 0.2560 (3) | 0.07841 (14) | 0.0243 (6) | |
H1A | 0.6163 | 0.2964 | 0.0442 | 0.029* | |
C2 | 0.7717 (2) | 0.2198 (3) | 0.06313 (15) | 0.0249 (6) | |
H2A | 0.7854 | 0.2341 | 0.0185 | 0.030* | |
C3 | 0.8540 (2) | 0.1623 (3) | 0.11272 (15) | 0.0236 (6) | |
C4 | 0.8308 (2) | 0.1435 (3) | 0.17715 (14) | 0.0246 (6) | |
H4A | 0.8863 | 0.1065 | 0.2118 | 0.030* | |
C5 | 0.7293 (2) | 0.1768 (3) | 0.19258 (14) | 0.0243 (6) | |
H5A | 0.7155 | 0.1608 | 0.2371 | 0.029* | |
C6 | 0.6463 (2) | 0.2343 (3) | 0.14288 (13) | 0.0205 (6) | |
C7 | 0.5366 (2) | 0.2719 (3) | 0.15616 (13) | 0.0215 (6) | |
H7A | 0.5085 | 0.3562 | 0.1387 | 0.026* | |
C8 | 0.4717 (2) | 0.2015 (3) | 0.18984 (13) | 0.0192 (6) | |
C9 | 0.3625 (2) | 0.2580 (3) | 0.19813 (13) | 0.0199 (6) | |
C10 | 0.2861 (2) | 0.1705 (3) | 0.22883 (13) | 0.0191 (6) | |
C11 | 0.3075 (2) | 0.0209 (3) | 0.23378 (14) | 0.0222 (6) | |
H11A | 0.3320 | −0.0046 | 0.2821 | 0.027* | |
H11B | 0.2380 | −0.0279 | 0.2158 | 0.027* | |
C12 | 0.4938 (2) | 0.0595 (3) | 0.21510 (14) | 0.0234 (6) | |
H12A | 0.5536 | 0.0192 | 0.1947 | 0.028* | |
H12B | 0.5174 | 0.0590 | 0.2652 | 0.028* | |
C13 | 0.2031 (2) | 0.2322 (3) | 0.25215 (13) | 0.0203 (6) | |
H13A | 0.1985 | 0.3258 | 0.2431 | 0.024* | |
C14 | 0.1187 (2) | 0.1830 (3) | 0.28866 (13) | 0.0199 (6) | |
C15 | 0.0454 (2) | 0.2783 (3) | 0.30679 (14) | 0.0226 (6) | |
H15A | 0.0513 | 0.3689 | 0.2933 | 0.027* | |
C16 | −0.0347 (2) | 0.2446 (3) | 0.34341 (14) | 0.0225 (6) | |
H16A | −0.0828 | 0.3120 | 0.3547 | 0.027* | |
C17 | −0.0461 (2) | 0.1121 (3) | 0.36419 (14) | 0.0207 (6) | |
C18 | 0.0264 (2) | 0.0167 (3) | 0.34587 (14) | 0.0234 (6) | |
H18A | 0.0196 | −0.0739 | 0.3590 | 0.028* | |
C19 | 0.1072 (2) | 0.0493 (3) | 0.30944 (13) | 0.0220 (6) | |
H19A | 0.1552 | −0.0182 | 0.2983 | 0.026* | |
C20 | 0.9643 (2) | 0.1219 (3) | 0.09596 (16) | 0.0323 (7) | |
H20A | 1.0236 | 0.1417 | 0.1348 | 0.049* | |
H20B | 0.9771 | 0.1720 | 0.0560 | 0.049* | |
H20C | 0.9637 | 0.0256 | 0.0861 | 0.049* | |
C21 | −0.1308 (2) | 0.0747 (3) | 0.40574 (15) | 0.0285 (7) | |
H21A | −0.1806 | 0.1507 | 0.4076 | 0.043* | |
H21B | −0.0935 | 0.0511 | 0.4520 | 0.043* | |
H21C | −0.1737 | −0.0024 | 0.3848 | 0.043* | |
C22 | 0.3612 (2) | −0.0824 (3) | 0.13444 (15) | 0.0255 (7) | |
C23 | 0.4436 (2) | −0.0929 (3) | 0.08775 (14) | 0.0260 (7) | |
H23A | 0.4927 | −0.0134 | 0.0940 | 0.031* | |
H23B | 0.4036 | −0.0938 | 0.0399 | 0.031* | |
C24 | 0.5139 (2) | −0.2201 (3) | 0.10200 (14) | 0.0262 (7) | |
H24A | 0.5620 | −0.2133 | 0.1475 | 0.031* | |
H24B | 0.4646 | −0.2986 | 0.1022 | 0.031* | |
C25 | 0.6299 (2) | −0.3755 (3) | 0.05634 (14) | 0.0249 (6) | |
H25A | 0.5691 | −0.4418 | 0.0525 | 0.030* | |
H25B | 0.6777 | −0.3862 | 0.1017 | 0.030* | |
C26 | 0.6971 (2) | −0.4027 (3) | 0.00178 (15) | 0.0262 (7) | |
H26A | 0.6476 | −0.4022 | −0.0434 | 0.031* | |
H26B | 0.7315 | −0.4925 | 0.0091 | 0.031* | |
C27 | 0.7874 (2) | −0.2969 (3) | 0.00328 (16) | 0.0292 (7) | |
H27A | 0.8437 | −0.3069 | 0.0455 | 0.035* | |
H27B | 0.8245 | −0.3100 | −0.0361 | 0.035* | |
C28 | 0.7380 (2) | −0.1587 (3) | 0.00057 (16) | 0.0292 (7) | |
H28A | 0.6891 | −0.1447 | −0.0443 | 0.035* | |
H28B | 0.7979 | −0.0911 | 0.0057 | 0.035* | |
C29 | 0.6719 (2) | −0.1403 (3) | 0.05646 (15) | 0.0255 (6) | |
H29A | 0.7215 | −0.1495 | 0.1013 | 0.031* | |
H29B | 0.6396 | −0.0491 | 0.0536 | 0.031* |
U11 | U22 | U33 | U12 | U13 | U23 | |
O1 | 0.0260 (10) | 0.0216 (11) | 0.0307 (11) | 0.0049 (9) | 0.0085 (9) | 0.0044 (9) |
O2 | 0.0363 (12) | 0.0433 (15) | 0.0414 (13) | −0.0166 (11) | 0.0183 (11) | −0.0151 (11) |
N1 | 0.0239 (11) | 0.0220 (13) | 0.0249 (12) | 0.0008 (10) | 0.0120 (10) | −0.0035 (10) |
N2 | 0.0246 (11) | 0.0216 (14) | 0.0245 (12) | 0.0006 (10) | 0.0098 (10) | −0.0003 (10) |
C1 | 0.0259 (14) | 0.0223 (16) | 0.0255 (14) | 0.0006 (12) | 0.0070 (12) | 0.0005 (12) |
C2 | 0.0298 (15) | 0.0238 (16) | 0.0232 (14) | −0.0056 (12) | 0.0101 (12) | 0.0028 (12) |
C3 | 0.0223 (13) | 0.0180 (15) | 0.0325 (16) | −0.0036 (11) | 0.0103 (12) | −0.0052 (12) |
C4 | 0.0192 (13) | 0.0281 (17) | 0.0256 (15) | −0.0023 (12) | 0.0019 (11) | −0.0021 (13) |
C5 | 0.0292 (15) | 0.0244 (16) | 0.0194 (14) | −0.0030 (12) | 0.0044 (12) | −0.0027 (12) |
C6 | 0.0225 (13) | 0.0160 (14) | 0.0228 (14) | −0.0038 (11) | 0.0036 (11) | −0.0015 (11) |
C7 | 0.0226 (13) | 0.0195 (15) | 0.0220 (14) | −0.0009 (11) | 0.0033 (11) | −0.0020 (11) |
C8 | 0.0197 (13) | 0.0198 (15) | 0.0185 (13) | −0.0001 (11) | 0.0047 (11) | −0.0007 (11) |
C9 | 0.0219 (13) | 0.0228 (16) | 0.0149 (12) | 0.0025 (11) | 0.0027 (10) | −0.0031 (11) |
C10 | 0.0204 (13) | 0.0211 (15) | 0.0156 (13) | −0.0008 (11) | 0.0033 (10) | −0.0004 (11) |
C11 | 0.0264 (14) | 0.0184 (15) | 0.0252 (14) | −0.0029 (12) | 0.0137 (12) | −0.0001 (12) |
C12 | 0.0221 (13) | 0.0235 (16) | 0.0253 (15) | 0.0031 (11) | 0.0064 (12) | 0.0009 (12) |
C13 | 0.0219 (13) | 0.0161 (14) | 0.0231 (14) | −0.0004 (11) | 0.0043 (11) | −0.0015 (11) |
C14 | 0.0176 (12) | 0.0221 (15) | 0.0203 (13) | −0.0016 (11) | 0.0041 (11) | −0.0027 (11) |
C15 | 0.0229 (13) | 0.0172 (15) | 0.0292 (15) | 0.0047 (11) | 0.0085 (12) | 0.0018 (12) |
C16 | 0.0224 (13) | 0.0226 (16) | 0.0240 (14) | 0.0023 (12) | 0.0078 (11) | 0.0003 (12) |
C17 | 0.0200 (13) | 0.0217 (16) | 0.0219 (14) | 0.0011 (11) | 0.0075 (11) | −0.0023 (12) |
C18 | 0.0280 (14) | 0.0188 (15) | 0.0250 (14) | −0.0031 (12) | 0.0093 (12) | 0.0021 (12) |
C19 | 0.0267 (14) | 0.0183 (15) | 0.0223 (14) | 0.0002 (11) | 0.0080 (12) | −0.0018 (11) |
C20 | 0.0296 (15) | 0.0337 (19) | 0.0368 (18) | −0.0018 (14) | 0.0143 (14) | −0.0030 (15) |
C21 | 0.0287 (15) | 0.0249 (17) | 0.0342 (17) | 0.0016 (13) | 0.0121 (13) | −0.0002 (13) |
C22 | 0.0286 (15) | 0.0220 (16) | 0.0280 (15) | −0.0002 (12) | 0.0105 (12) | −0.0013 (13) |
C23 | 0.0286 (14) | 0.0266 (17) | 0.0253 (15) | −0.0003 (13) | 0.0113 (12) | −0.0013 (13) |
C24 | 0.0287 (15) | 0.0274 (17) | 0.0247 (15) | 0.0014 (13) | 0.0108 (12) | 0.0014 (13) |
C25 | 0.0283 (14) | 0.0202 (16) | 0.0274 (15) | 0.0015 (12) | 0.0082 (12) | 0.0013 (12) |
C26 | 0.0292 (15) | 0.0232 (16) | 0.0296 (15) | 0.0041 (12) | 0.0142 (13) | 0.0011 (13) |
C27 | 0.0277 (15) | 0.0261 (17) | 0.0368 (17) | 0.0033 (13) | 0.0135 (13) | −0.0010 (14) |
C28 | 0.0301 (15) | 0.0251 (17) | 0.0355 (17) | −0.0019 (13) | 0.0143 (14) | 0.0001 (14) |
C29 | 0.0295 (14) | 0.0208 (16) | 0.0284 (15) | −0.0047 (12) | 0.0116 (13) | −0.0009 (12) |
O1—C9 | 1.230 (3) | C15—C16 | 1.375 (4) |
O2—C22 | 1.229 (3) | C15—H15A | 0.9500 |
N1—C22 | 1.371 (4) | C16—C17 | 1.400 (4) |
N1—C11 | 1.451 (3) | C16—H16A | 0.9500 |
N1—C12 | 1.457 (3) | C17—C18 | 1.399 (4) |
N2—C25 | 1.465 (4) | C17—C21 | 1.496 (4) |
N2—C29 | 1.466 (3) | C18—C19 | 1.377 (4) |
N2—C24 | 1.468 (4) | C18—H18A | 0.9500 |
C1—C2 | 1.384 (4) | C19—H19A | 0.9500 |
C1—C6 | 1.394 (4) | C20—H20A | 0.9800 |
C1—H1A | 0.9500 | C20—H20B | 0.9800 |
C2—C3 | 1.399 (4) | C20—H20C | 0.9800 |
C2—H2A | 0.9500 | C21—H21A | 0.9800 |
C3—C4 | 1.384 (4) | C21—H21B | 0.9800 |
C3—C20 | 1.511 (4) | C21—H21C | 0.9800 |
C4—C5 | 1.381 (4) | C22—C23 | 1.505 (4) |
C4—H4A | 0.9500 | C23—C24 | 1.532 (4) |
C5—C6 | 1.405 (4) | C23—H23A | 0.9900 |
C5—H5A | 0.9500 | C23—H23B | 0.9900 |
C6—C7 | 1.471 (4) | C24—H24A | 0.9900 |
C7—C8 | 1.336 (4) | C24—H24B | 0.9900 |
C7—H7A | 0.9500 | C25—C26 | 1.513 (4) |
C8—C9 | 1.493 (4) | C25—H25A | 0.9900 |
C8—C12 | 1.511 (4) | C25—H25B | 0.9900 |
C9—C10 | 1.497 (4) | C26—C27 | 1.527 (4) |
C10—C13 | 1.349 (4) | C26—H26A | 0.9900 |
C10—C11 | 1.515 (4) | C26—H26B | 0.9900 |
C11—H11A | 0.9900 | C27—C28 | 1.504 (4) |
C11—H11B | 0.9900 | C27—H27A | 0.9900 |
C12—H12A | 0.9900 | C27—H27B | 0.9900 |
C12—H12B | 0.9900 | C28—C29 | 1.512 (4) |
C13—C14 | 1.462 (4) | C28—H28A | 0.9900 |
C13—H13A | 0.9500 | C28—H28B | 0.9900 |
C14—C15 | 1.403 (4) | C29—H29A | 0.9900 |
C14—C19 | 1.412 (4) | C29—H29B | 0.9900 |
C22—N1—C11 | 119.4 (2) | C19—C18—C17 | 122.5 (3) |
C22—N1—C12 | 124.6 (2) | C19—C18—H18A | 118.8 |
C11—N1—C12 | 112.6 (2) | C17—C18—H18A | 118.8 |
C25—N2—C29 | 110.1 (2) | C18—C19—C14 | 120.1 (3) |
C25—N2—C24 | 109.8 (2) | C18—C19—H19A | 120.0 |
C29—N2—C24 | 111.8 (2) | C14—C19—H19A | 120.0 |
C2—C1—C6 | 121.4 (3) | C3—C20—H20A | 109.5 |
C2—C1—H1A | 119.3 | C3—C20—H20B | 109.5 |
C6—C1—H1A | 119.3 | H20A—C20—H20B | 109.5 |
C1—C2—C3 | 120.7 (3) | C3—C20—H20C | 109.5 |
C1—C2—H2A | 119.7 | H20A—C20—H20C | 109.5 |
C3—C2—H2A | 119.7 | H20B—C20—H20C | 109.5 |
C4—C3—C2 | 117.8 (2) | C17—C21—H21A | 109.5 |
C4—C3—C20 | 121.4 (3) | C17—C21—H21B | 109.5 |
C2—C3—C20 | 120.7 (3) | H21A—C21—H21B | 109.5 |
C5—C4—C3 | 121.9 (3) | C17—C21—H21C | 109.5 |
C5—C4—H4A | 119.0 | H21A—C21—H21C | 109.5 |
C3—C4—H4A | 119.0 | H21B—C21—H21C | 109.5 |
C4—C5—C6 | 120.4 (3) | O2—C22—N1 | 120.8 (3) |
C4—C5—H5A | 119.8 | O2—C22—C23 | 120.5 (3) |
C6—C5—H5A | 119.8 | N1—C22—C23 | 118.7 (2) |
C1—C6—C5 | 117.7 (2) | C22—C23—C24 | 111.3 (2) |
C1—C6—C7 | 119.4 (2) | C22—C23—H23A | 109.4 |
C5—C6—C7 | 123.0 (3) | C24—C23—H23A | 109.4 |
C8—C7—C6 | 127.7 (3) | C22—C23—H23B | 109.4 |
C8—C7—H7A | 116.1 | C24—C23—H23B | 109.4 |
C6—C7—H7A | 116.1 | H23A—C23—H23B | 108.0 |
C7—C8—C9 | 119.5 (2) | N2—C24—C23 | 111.2 (2) |
C7—C8—C12 | 125.1 (2) | N2—C24—H24A | 109.4 |
C9—C8—C12 | 115.2 (2) | C23—C24—H24A | 109.4 |
O1—C9—C8 | 120.4 (3) | N2—C24—H24B | 109.4 |
O1—C9—C10 | 121.5 (2) | C23—C24—H24B | 109.4 |
C8—C9—C10 | 118.1 (2) | H24A—C24—H24B | 108.0 |
C13—C10—C9 | 116.7 (3) | N2—C25—C26 | 111.6 (2) |
C13—C10—C11 | 124.1 (2) | N2—C25—H25A | 109.3 |
C9—C10—C11 | 119.2 (2) | C26—C25—H25A | 109.3 |
N1—C11—C10 | 110.8 (2) | N2—C25—H25B | 109.3 |
N1—C11—H11A | 109.5 | C26—C25—H25B | 109.3 |
C10—C11—H11A | 109.5 | H25A—C25—H25B | 108.0 |
N1—C11—H11B | 109.5 | C25—C26—C27 | 110.8 (2) |
C10—C11—H11B | 109.5 | C25—C26—H26A | 109.5 |
H11A—C11—H11B | 108.1 | C27—C26—H26A | 109.5 |
N1—C12—C8 | 108.1 (2) | C25—C26—H26B | 109.5 |
N1—C12—H12A | 110.1 | C27—C26—H26B | 109.5 |
C8—C12—H12A | 110.1 | H26A—C26—H26B | 108.1 |
N1—C12—H12B | 110.1 | C28—C27—C26 | 110.2 (2) |
C8—C12—H12B | 110.1 | C28—C27—H27A | 109.6 |
H12A—C12—H12B | 108.4 | C26—C27—H27A | 109.6 |
C10—C13—C14 | 132.4 (3) | C28—C27—H27B | 109.6 |
C10—C13—H13A | 113.8 | C26—C27—H27B | 109.6 |
C14—C13—H13A | 113.8 | H27A—C27—H27B | 108.1 |
C15—C14—C19 | 117.3 (3) | C27—C28—C29 | 110.8 (3) |
C15—C14—C13 | 116.9 (3) | C27—C28—H28A | 109.5 |
C19—C14—C13 | 125.7 (3) | C29—C28—H28A | 109.5 |
C16—C15—C14 | 122.1 (3) | C27—C28—H28B | 109.5 |
C16—C15—H15A | 119.0 | C29—C28—H28B | 109.5 |
C14—C15—H15A | 119.0 | H28A—C28—H28B | 108.1 |
C15—C16—C17 | 120.7 (3) | N2—C29—C28 | 110.7 (2) |
C15—C16—H16A | 119.6 | N2—C29—H29A | 109.5 |
C17—C16—H16A | 119.6 | C28—C29—H29A | 109.5 |
C18—C17—C16 | 117.4 (3) | N2—C29—H29B | 109.5 |
C18—C17—C21 | 121.3 (3) | C28—C29—H29B | 109.5 |
C16—C17—C21 | 121.3 (3) | H29A—C29—H29B | 108.1 |
C6—C1—C2—C3 | −1.2 (4) | C11—C10—C13—C14 | 3.1 (4) |
C1—C2—C3—C4 | −0.2 (4) | C10—C13—C14—C15 | 178.4 (3) |
C1—C2—C3—C20 | 179.6 (3) | C10—C13—C14—C19 | 1.0 (5) |
C2—C3—C4—C5 | 1.4 (4) | C19—C14—C15—C16 | 0.2 (4) |
C20—C3—C4—C5 | −178.3 (3) | C13—C14—C15—C16 | −177.5 (2) |
C3—C4—C5—C6 | −1.3 (4) | C14—C15—C16—C17 | 0.0 (4) |
C2—C1—C6—C5 | 1.3 (4) | C15—C16—C17—C18 | −0.3 (4) |
C2—C1—C6—C7 | −178.7 (3) | C15—C16—C17—C21 | 178.3 (3) |
C4—C5—C6—C1 | 0.0 (4) | C16—C17—C18—C19 | 0.6 (4) |
C4—C5—C6—C7 | 179.9 (3) | C21—C17—C18—C19 | −178.0 (2) |
C1—C6—C7—C8 | 136.4 (3) | C17—C18—C19—C14 | −0.5 (4) |
C5—C6—C7—C8 | −43.5 (4) | C15—C14—C19—C18 | 0.1 (4) |
C6—C7—C8—C9 | 179.7 (2) | C13—C14—C19—C18 | 177.6 (2) |
C6—C7—C8—C12 | −7.0 (4) | C11—N1—C22—O2 | −14.0 (4) |
C7—C8—C9—O1 | −9.2 (4) | C12—N1—C22—O2 | −171.4 (3) |
C12—C8—C9—O1 | 176.9 (2) | C11—N1—C22—C23 | 166.0 (2) |
C7—C8—C9—C10 | 173.0 (2) | C12—N1—C22—C23 | 8.7 (4) |
C12—C8—C9—C10 | −1.0 (3) | O2—C22—C23—C24 | −89.8 (3) |
O1—C9—C10—C13 | −14.8 (4) | N1—C22—C23—C24 | 90.2 (3) |
C8—C9—C10—C13 | 163.1 (2) | C25—N2—C24—C23 | −167.5 (2) |
O1—C9—C10—C11 | 166.9 (2) | C29—N2—C24—C23 | 70.0 (3) |
C8—C9—C10—C11 | −15.3 (3) | C22—C23—C24—N2 | 171.9 (2) |
C22—N1—C11—C10 | −105.7 (3) | C29—N2—C25—C26 | −59.3 (3) |
C12—N1—C11—C10 | 54.2 (3) | C24—N2—C25—C26 | 177.2 (2) |
C13—C10—C11—N1 | 171.5 (2) | N2—C25—C26—C27 | 55.5 (3) |
C9—C10—C11—N1 | −10.3 (3) | C25—C26—C27—C28 | −52.5 (3) |
C22—N1—C12—C8 | 87.9 (3) | C26—C27—C28—C29 | 54.1 (3) |
C11—N1—C12—C8 | −70.9 (3) | C25—N2—C29—C28 | 60.6 (3) |
C7—C8—C12—N1 | −132.5 (3) | C24—N2—C29—C28 | −177.1 (2) |
C9—C8—C12—N1 | 41.0 (3) | C27—C28—C29—N2 | −58.7 (3) |
C9—C10—C13—C14 | −175.2 (2) |
Cg1 is the centroid of the benzene C14–C19 ring. |
D—H···A | D—H | H···A | D···A | D—H···A |
C16—H16A···O2i | 0.95 | 2.51 | 3.346 (3) | 147 |
C21—H21A···O2i | 0.98 | 2.44 | 3.371 (4) | 160 |
C21—H21C···O1ii | 0.98 | 2.52 | 3.446 (3) | 157 |
C4—H4A···Cg1iii | 0.95 | 2.69 | 3.526 (3) | 148 |
C27—H27A···Cg1iv | 0.99 | 2.74 | 3.719 (3) | 168 |
Symmetry codes: (i) −x, y+1/2, −z+1/2; (ii) −x, y−1/2, −z+1/2; (iii) x+1, y, z; (iv) −x+1, y−1/2, −z+1/2. |
Experimental details
Crystal data | |
Chemical formula | C29H34N2O2 |
Mr | 442.58 |
Crystal system, space group | Monoclinic, P21/c |
Temperature (K) | 100 |
a, b, c (Å) | 12.2913 (8), 9.9753 (8), 19.9993 (14) |
β (°) | 100.884 (4) |
V (Å3) | 2408.0 (3) |
Z | 4 |
Radiation type | Mo Kα |
µ (mm−1) | 0.08 |
Crystal size (mm) | 0.46 × 0.25 × 0.20 |
Data collection | |
Diffractometer | Bruker SMART APEXII CCD area-detector |
Absorption correction | Multi-scan (SADABS; Bruker, 2009) |
Tmin, Tmax | 0.966, 0.985 |
No. of measured, independent and observed [I > I > 2σ(I)] reflections | 18968, 6852, 3483 |
Rint | 0.075 |
(sin θ/λ)max (Å−1) | 0.702 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.078, 0.228, 1.04 |
No. of reflections | 6852 |
No. of parameters | 300 |
H-atom treatment | H-atom parameters constrained |
Δρmax, Δρmin (e Å−3) | 0.38, −0.37 |
Computer programs: APEX2 (Bruker, 2009), SAINT (Bruker, 2009), SHELXTL (Sheldrick, 2008) and PLATON (Spek, 2009).
Cg1 is the centroid of the benzene C14–C19 ring. |
D—H···A | D—H | H···A | D···A | D—H···A |
C16—H16A···O2i | 0.95 | 2.51 | 3.346 (3) | 147 |
C21—H21A···O2i | 0.98 | 2.44 | 3.371 (4) | 160 |
C21—H21C···O1ii | 0.98 | 2.52 | 3.446 (3) | 157 |
C4—H4A···Cg1iii | 0.95 | 2.69 | 3.526 (3) | 148 |
C27—H27A···Cg1iv | 0.99 | 2.74 | 3.719 (3) | 168 |
Symmetry codes: (i) −x, y+1/2, −z+1/2; (ii) −x, y−1/2, −z+1/2; (iii) x+1, y, z; (iv) −x+1, y−1/2, −z+1/2. |
Acknowledgements
The authors thank the Malaysian Government and Universiti Sains Malaysia (USM) for an FRGS grant (No. 203/PKIMIA/6711179) and an RU grant (No. 1001/PFIZIK/811151) to conduct this work. YK thanks USM for providing research facility. SA thanks the Malaysian Government and USM for an Academic Staff Training Scheme Fellowship.
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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.
Claisen-Schmidt condensation reaction between aldehyde and ketone, leads to biological active class of compound, namely α,β-unsaturated ketones. These compounds show a wide range of biological activities such as enzyme inhibitory (Tanaka et al., 2003), cytotoxic and antitumor (Nakayachi et al., 2004). This conjugated system, O═CH—CH═CH2 is the key moiety which promotes the bioactivities in the title compound (Lee et al., 2004). α, β-unsaturated ketones can be considered as a Michael acceptor which is an active moiety showing enzyme inhibitory activity (Hertzberg et al., 1989). Due to these reasons, the crystal structure determination of the title compound was carried out and the results are presented in this paper.
The molecular structure is shown in Fig. 1. The bond lengths and angles are within normal ranges and comparable to the related structures (Aridoss et al., 2010; Kia et al., 2011). The piperidine rings (N1/C8–C12 and N2/C25–C29) adopt different conformations (Cremer & Pople, 1975). N1/C8–C12 adopts a half-chair conformation [puckering parameters, Q= 0.556 (3) Å, Θ= 117.4 (3)° and Φ= 157.4 (3)°], whereas, N2/C25–C29 adopts a chair conformation [puckering parameters, Q= 0.573 (3) Å, Θ= 3.3 (3)° and Φ= 329 (5)°]. The least square plane through both rings form a dihedral angle of 18.29 (13)° between them. The least-square plane of the central piperidine ring [N1/C8–C12, maximum deviation of 0.384 (2) Å at atom N1] forms dihedral angles of 64.82 (13) and 17.55 (13)°, respectively, with the pendant benzene rings (C1–C6 and C14–C19).
In the crystal packing (Fig. 2), molecules are linked into a tape along the b axis via intermolecular C16—H16A···O2, C21—H21A···O2 and C21—H21C···O1 interactions (Table 1), generating R22(20) and R12(6) graph-set motifs (Bernstein et al., 1995). The crystal structure is further stabilized by the intermolecular C4—H4A···Cg1 and C27—H27A···Cg1 (Table 1) interactions (Cg1 is the centroid of the benzene ring, C14–C19).