organic compounds
r-2,c-6-Bis(2-methoxyphenyl)-t-3,t-5-dimethylpiperidin-4-one acetic acid solvate
aDepartment of Image Science and Engineering, Pukyong National University, Busan 608-739, Republic of Korea, and bCentre of Advanced Study in Crystallography and Biophysics, University of Madras, Guindy Campus, Chennai 600 025, India
*Correspondence e-mail: ytjeong@pknu.ac.kr
In the title compound, C21H25NO3·C2H4O2, the piperidone ring adopts a chair conformation. The two methoxy groups are nearly coplanar with the aromatic rings to which they are attached. The dihedral angle between the two aromatic rings is 60.9 (2)°. There are two short intramolecular N—H⋯O contacts. The crystal packing is stabilized by intermolecular O—H⋯N and C—H⋯O interactions.
Related literature
For related structures see: Aridoss et al. (2008),(2009); Gayathri et al. (2008). For the synthesis of the title compound, see Noller & Baliah (1948). For ring see: Cremer & Pople (1975); Nardelli (1983).
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/S1600536810017721/bt5268sup1.cif
contains datablocks global, I. DOI:Structure factors: contains datablock I. DOI: https://doi.org/10.1107/S1600536810017721/bt5268Isup2.hkl
The title compound was prepared by the condensation of 3-pentanone, 2-methoxybenzaldehyde and ammonium acetate in 1:2:1 molar ratio in ethanol as reported by Noller and Baliah (1948) with slight modification. Diffraction quality white crystal was obtained by recrystalization of the crude sample from ethanol.
H atoms bonded to C and O were positioned geometrically (C—H=0.93-0.98Å, O-H =0.82Å) and allowed to ride on their parent atoms, with 1.5Ueq(Cmethyl,O) or 1.2 Ueq(C). The H atom bonded to N was isotropically refined.
In continuation of our work on establishing the
and conformation of 2,6-diaryl piperidine-4-ones and their derivatives (Aridoss et al., 2008, 2009 and Gayathri et al., 2008), we are reporting here the of the title compound wherein the piperidone ring adopts chair conformation irrespective of the substituents' on both sides of carbonyl and secondary nitrogen in the ring.In the present structure, the piperidone ring adopts a chair conformation with atoms N1 and C3 deviating by -0.584 (2) and 0.628 (6) Å, respectively,from the least-sqaures plane defined by the remaining atoms (C1/C2/C4/C5) in the ring. When compared with the reported structures of piperidone derivatives (Gayathri et al., 2008), it is clear that the conformation of the piperidone ring is highly influenced by the substitutions at various positions. The molecule is stabilized by N—H···O intramolecular interaction wherein, N1 atom act as a donor to O2 and O3, generating two S(6) motifs. The crystal packing is stabilized by N—H···O, O—H···N and C—H···O intra and intermolecular interactions. The sum of the bond angles around the atom N1(336.6 (3)°) of the piperidone ring in the molecule is in accordance with sp3 hybridization.
The puckering parameters (Cremer & Pople, 1975) and the smallest displacement asymmetry parameters (Nardelli, 1983) for the piperidine ring are q2 = 0.041 (1) Å, q3 = 0.534 (4) Å; QT = 0.536 (1) Å and θ = 4.40 (1)°,φ2 = 135.887 (8)°, respectively.
For related structures see: Aridoss et al. (2008),(2009); Gayathri et al. (2008). For the synthesis of the title compound, see Noller & Baliah (1948). For ring
see: Cremer & Pople (1975); Nardelli (1983).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).Fig. 1. Perspective view of the molecule showing the anisotropic displacement ellipsoids at 30% probability level. | |
Fig. 2. The crystal packing of the molecules viewed down a–axis. For clarity, hydrogen atoms which are not involved in hydrogen bonding are omitted |
C21H25NO3·C2H4O2 | Z = 2 |
Mr = 399.47 | F(000) = 428 |
Triclinic, P1 | Dx = 1.196 Mg m−3 |
Hall symbol: -P 1 | Mo Kα radiation, λ = 0.71073 Å |
a = 9.3059 (5) Å | Cell parameters from 3180 reflections |
b = 10.7052 (8) Å | θ = 1.7–28.4° |
c = 11.8950 (7) Å | µ = 0.08 mm−1 |
α = 94.432 (3)° | T = 292 K |
β = 93.341 (2)° | Block, colorless |
γ = 109.502 (3)° | 0.25 × 0.23 × 0.2 mm |
V = 1109.21 (12) Å3 |
Bruker SMART APEXII area-detector diffractometer | 5528 independent reflections |
Radiation source: fine-focus sealed tube | 3271 reflections with I > 2σ(I) |
Graphite monochromator | Rint = 0.031 |
ω and φ scans | θmax = 28.4°, θmin = 1.7° |
Absorption correction: multi-scan (SADABS; Bruker, 2008) | h = −12→12 |
Tmin = 0.979, Tmax = 0.983 | k = −14→14 |
19986 measured reflections | l = −15→15 |
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) = 0.173 | H atoms treated by a mixture of independent and constrained refinement |
S = 1.00 | w = 1/[σ2(Fo2) + (0.0885P)2 + 0.1246P] where P = (Fo2 + 2Fc2)/3 |
5528 reflections | (Δ/σ)max = 0.005 |
271 parameters | Δρmax = 0.32 e Å−3 |
0 restraints | Δρmin = −0.26 e Å−3 |
C21H25NO3·C2H4O2 | γ = 109.502 (3)° |
Mr = 399.47 | V = 1109.21 (12) Å3 |
Triclinic, P1 | Z = 2 |
a = 9.3059 (5) Å | Mo Kα radiation |
b = 10.7052 (8) Å | µ = 0.08 mm−1 |
c = 11.8950 (7) Å | T = 292 K |
α = 94.432 (3)° | 0.25 × 0.23 × 0.2 mm |
β = 93.341 (2)° |
Bruker SMART APEXII area-detector diffractometer | 5528 independent reflections |
Absorption correction: multi-scan (SADABS; Bruker, 2008) | 3271 reflections with I > 2σ(I) |
Tmin = 0.979, Tmax = 0.983 | Rint = 0.031 |
19986 measured reflections |
R[F2 > 2σ(F2)] = 0.049 | 0 restraints |
wR(F2) = 0.173 | H atoms treated by a mixture of independent and constrained refinement |
S = 1.00 | Δρmax = 0.32 e Å−3 |
5528 reflections | Δρmin = −0.26 e Å−3 |
271 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 > 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 | ||
O4 | 0.2740 (2) | 0.8721 (2) | 0.70402 (14) | 0.1087 (6) | |
C1 | 0.43491 (17) | 0.18195 (15) | 0.14948 (13) | 0.0541 (4) | |
H1A | 0.5080 | 0.1344 | 0.1425 | 0.065* | |
C2 | 0.4178 (2) | 0.2350 (2) | 0.03418 (14) | 0.0678 (5) | |
H2 | 0.3463 | 0.2842 | 0.0403 | 0.081* | |
C3 | 0.5705 (2) | 0.33189 (19) | 0.01370 (14) | 0.0650 (5) | |
C4 | 0.6393 (2) | 0.44701 (17) | 0.10477 (14) | 0.0623 (4) | |
H4 | 0.5714 | 0.4999 | 0.1081 | 0.075* | |
C5 | 0.64521 (17) | 0.38984 (14) | 0.21975 (12) | 0.0505 (4) | |
H5 | 0.7209 | 0.3445 | 0.2168 | 0.061* | |
C6 | 0.70122 (19) | 0.49821 (14) | 0.31787 (13) | 0.0533 (4) | |
C7 | 0.6116 (2) | 0.57269 (15) | 0.35615 (14) | 0.0589 (4) | |
C8 | 0.6675 (3) | 0.67106 (17) | 0.44625 (16) | 0.0746 (5) | |
H8 | 0.6069 | 0.7190 | 0.4722 | 0.089* | |
C9 | 0.8122 (3) | 0.6977 (2) | 0.49702 (18) | 0.0866 (6) | |
H9 | 0.8495 | 0.7645 | 0.5569 | 0.104* | |
C10 | 0.9024 (3) | 0.6271 (2) | 0.46067 (18) | 0.0828 (6) | |
H10 | 1.0005 | 0.6458 | 0.4953 | 0.099* | |
C11 | 0.8457 (2) | 0.52775 (17) | 0.37193 (16) | 0.0659 (5) | |
H11 | 0.9067 | 0.4794 | 0.3479 | 0.079* | |
C12 | 0.3732 (3) | 0.6129 (2) | 0.33376 (19) | 0.0891 (6) | |
H12A | 0.3540 | 0.6013 | 0.4114 | 0.134* | |
H12B | 0.2781 | 0.5795 | 0.2870 | 0.134* | |
H12C | 0.4220 | 0.7058 | 0.3261 | 0.134* | |
C13 | 0.7967 (3) | 0.5374 (2) | 0.08009 (19) | 0.0865 (6) | |
H13A | 0.8662 | 0.4883 | 0.0799 | 0.130* | |
H13B | 0.8335 | 0.6117 | 0.1374 | 0.130* | |
H13C | 0.7897 | 0.5692 | 0.0074 | 0.130* | |
C14 | 0.3526 (3) | 0.1237 (3) | −0.06128 (18) | 0.1039 (8) | |
H14A | 0.3557 | 0.1612 | −0.1322 | 0.156* | |
H14B | 0.2486 | 0.0737 | −0.0501 | 0.156* | |
H14C | 0.4124 | 0.0659 | −0.0619 | 0.156* | |
C15 | 0.28810 (18) | 0.08293 (16) | 0.18040 (14) | 0.0569 (4) | |
C16 | 0.2765 (2) | −0.04794 (18) | 0.18907 (17) | 0.0723 (5) | |
H16 | 0.3608 | −0.0737 | 0.1765 | 0.087* | |
C17 | 0.1441 (2) | −0.1413 (2) | 0.2158 (2) | 0.0871 (6) | |
H17 | 0.1385 | −0.2292 | 0.2196 | 0.104* | |
C18 | 0.0207 (2) | −0.1035 (2) | 0.2366 (2) | 0.0838 (6) | |
H18 | −0.0684 | −0.1659 | 0.2560 | 0.101* | |
C19 | 0.0267 (2) | 0.0254 (2) | 0.22903 (16) | 0.0717 (5) | |
H19 | −0.0577 | 0.0502 | 0.2433 | 0.086* | |
C20 | 0.15927 (18) | 0.11803 (17) | 0.20012 (14) | 0.0600 (4) | |
C21 | 0.0428 (3) | 0.2846 (3) | 0.1817 (2) | 0.0973 (7) | |
H21A | −0.0251 | 0.2319 | 0.1186 | 0.146* | |
H21B | 0.0704 | 0.3773 | 0.1706 | 0.146* | |
H21C | −0.0075 | 0.2686 | 0.2500 | 0.146* | |
N1 | 0.49978 (14) | 0.28941 (12) | 0.24234 (10) | 0.0474 (3) | |
O1 | 0.63714 (19) | 0.31782 (17) | −0.06797 (12) | 0.0943 (5) | |
O2 | 0.47078 (15) | 0.54141 (12) | 0.29933 (11) | 0.0716 (4) | |
O3 | 0.17552 (13) | 0.24937 (12) | 0.19021 (12) | 0.0731 (4) | |
H1 | 0.4328 (19) | 0.3276 (16) | 0.2563 (14) | 0.057 (4)* | |
C22 | 0.2703 (3) | 0.9465 (3) | 0.5224 (2) | 0.0980 (7) | |
H22A | 0.1935 | 0.9802 | 0.5490 | 0.147* | |
H22B | 0.2283 | 0.8846 | 0.4562 | 0.147* | |
H22C | 0.3560 | 1.0191 | 0.5037 | 0.147* | |
C23 | 0.32168 (18) | 0.87804 (16) | 0.61225 (16) | 0.0609 (4) | |
O5 | 0.42181 (15) | 0.82324 (12) | 0.58533 (10) | 0.0707 (4) | |
H5A | 0.4448 | 0.7887 | 0.6396 | 0.106* |
U11 | U22 | U33 | U12 | U13 | U23 | |
O4 | 0.1096 (12) | 0.1637 (16) | 0.1017 (12) | 0.0972 (12) | 0.0448 (10) | 0.0488 (11) |
C1 | 0.0527 (9) | 0.0637 (9) | 0.0533 (9) | 0.0328 (7) | 0.0022 (7) | −0.0067 (7) |
C2 | 0.0644 (11) | 0.0993 (13) | 0.0521 (10) | 0.0474 (10) | 0.0012 (8) | −0.0032 (9) |
C3 | 0.0784 (12) | 0.0886 (12) | 0.0474 (9) | 0.0524 (10) | 0.0108 (8) | 0.0105 (8) |
C4 | 0.0791 (11) | 0.0689 (10) | 0.0558 (9) | 0.0436 (9) | 0.0180 (8) | 0.0150 (8) |
C5 | 0.0546 (9) | 0.0532 (8) | 0.0522 (9) | 0.0279 (7) | 0.0105 (7) | 0.0074 (6) |
C6 | 0.0645 (10) | 0.0476 (8) | 0.0509 (9) | 0.0214 (7) | 0.0101 (7) | 0.0100 (6) |
C7 | 0.0749 (11) | 0.0507 (8) | 0.0555 (9) | 0.0261 (8) | 0.0117 (8) | 0.0064 (7) |
C8 | 0.1046 (16) | 0.0570 (10) | 0.0654 (11) | 0.0316 (10) | 0.0157 (11) | 0.0011 (8) |
C9 | 0.1166 (18) | 0.0630 (11) | 0.0681 (12) | 0.0196 (12) | −0.0063 (12) | −0.0067 (9) |
C10 | 0.0855 (14) | 0.0684 (12) | 0.0818 (13) | 0.0133 (10) | −0.0152 (11) | 0.0076 (10) |
C11 | 0.0691 (11) | 0.0575 (9) | 0.0707 (11) | 0.0205 (8) | 0.0032 (9) | 0.0107 (8) |
C12 | 0.1012 (16) | 0.0992 (15) | 0.0907 (15) | 0.0668 (13) | 0.0186 (12) | −0.0036 (11) |
C13 | 0.1080 (17) | 0.0800 (13) | 0.0780 (13) | 0.0317 (12) | 0.0350 (12) | 0.0286 (10) |
C14 | 0.0884 (15) | 0.150 (2) | 0.0606 (13) | 0.0355 (15) | −0.0106 (11) | −0.0285 (13) |
C15 | 0.0508 (9) | 0.0637 (9) | 0.0575 (9) | 0.0255 (7) | −0.0010 (7) | −0.0103 (7) |
C16 | 0.0595 (11) | 0.0656 (11) | 0.0921 (14) | 0.0272 (9) | −0.0021 (9) | −0.0101 (9) |
C17 | 0.0714 (13) | 0.0614 (11) | 0.1236 (19) | 0.0202 (10) | −0.0025 (12) | −0.0002 (11) |
C18 | 0.0596 (11) | 0.0755 (13) | 0.1040 (16) | 0.0105 (9) | 0.0009 (10) | −0.0023 (11) |
C19 | 0.0513 (10) | 0.0833 (13) | 0.0797 (13) | 0.0254 (9) | 0.0025 (8) | −0.0048 (10) |
C20 | 0.0529 (9) | 0.0651 (10) | 0.0644 (10) | 0.0265 (8) | 0.0010 (7) | −0.0066 (8) |
C21 | 0.0762 (13) | 0.1153 (17) | 0.131 (2) | 0.0613 (13) | 0.0365 (13) | 0.0465 (15) |
N1 | 0.0480 (7) | 0.0521 (7) | 0.0486 (7) | 0.0264 (6) | 0.0079 (5) | 0.0001 (5) |
O1 | 0.1128 (11) | 0.1183 (12) | 0.0627 (8) | 0.0504 (9) | 0.0354 (8) | 0.0029 (7) |
O2 | 0.0794 (8) | 0.0754 (8) | 0.0738 (8) | 0.0476 (7) | 0.0080 (7) | −0.0074 (6) |
O3 | 0.0597 (7) | 0.0747 (8) | 0.0979 (10) | 0.0392 (6) | 0.0169 (6) | 0.0049 (7) |
C22 | 0.0881 (15) | 0.1015 (16) | 0.1127 (18) | 0.0350 (12) | 0.0098 (13) | 0.0478 (14) |
C23 | 0.0485 (9) | 0.0621 (10) | 0.0718 (11) | 0.0157 (7) | 0.0113 (8) | 0.0145 (8) |
O5 | 0.0856 (9) | 0.0786 (8) | 0.0611 (7) | 0.0406 (7) | 0.0226 (6) | 0.0175 (6) |
O4—C23 | 1.200 (2) | C12—H12C | 0.9600 |
C1—N1 | 1.4731 (19) | C13—H13A | 0.9600 |
C1—C15 | 1.509 (2) | C13—H13B | 0.9600 |
C1—C2 | 1.544 (2) | C13—H13C | 0.9600 |
C1—H1A | 0.9800 | C14—H14A | 0.9600 |
C2—C3 | 1.501 (3) | C14—H14B | 0.9600 |
C2—C14 | 1.518 (3) | C14—H14C | 0.9600 |
C2—H2 | 0.9800 | C15—C16 | 1.381 (2) |
C3—O1 | 1.208 (2) | C15—C20 | 1.398 (2) |
C3—C4 | 1.513 (3) | C16—C17 | 1.375 (3) |
C4—C13 | 1.522 (3) | C16—H16 | 0.9300 |
C4—C5 | 1.546 (2) | C17—C18 | 1.369 (3) |
C4—H4 | 0.9800 | C17—H17 | 0.9300 |
C5—N1 | 1.4748 (19) | C18—C19 | 1.372 (3) |
C5—C6 | 1.515 (2) | C18—H18 | 0.9300 |
C5—H5 | 0.9800 | C19—C20 | 1.381 (3) |
C6—C11 | 1.380 (2) | C19—H19 | 0.9300 |
C6—C7 | 1.404 (2) | C20—O3 | 1.378 (2) |
C7—O2 | 1.362 (2) | C21—O3 | 1.407 (2) |
C7—C8 | 1.387 (3) | C21—H21A | 0.9600 |
C8—C9 | 1.372 (3) | C21—H21B | 0.9600 |
C8—H8 | 0.9300 | C21—H21C | 0.9600 |
C9—C10 | 1.371 (3) | N1—H1 | 0.869 (17) |
C9—H9 | 0.9300 | C22—C23 | 1.485 (3) |
C10—C11 | 1.382 (3) | C22—H22A | 0.9600 |
C10—H10 | 0.9300 | C22—H22B | 0.9600 |
C11—H11 | 0.9300 | C22—H22C | 0.9600 |
C12—O2 | 1.427 (2) | C23—O5 | 1.298 (2) |
C12—H12A | 0.9600 | O5—H5A | 0.8200 |
C12—H12B | 0.9600 | ||
N1—C1—C15 | 110.18 (11) | C4—C13—H13A | 109.5 |
N1—C1—C2 | 112.74 (13) | C4—C13—H13B | 109.5 |
C15—C1—C2 | 113.26 (13) | H13A—C13—H13B | 109.5 |
N1—C1—H1A | 106.7 | C4—C13—H13C | 109.5 |
C15—C1—H1A | 106.7 | H13A—C13—H13C | 109.5 |
C2—C1—H1A | 106.7 | H13B—C13—H13C | 109.5 |
C3—C2—C14 | 113.04 (15) | C2—C14—H14A | 109.5 |
C3—C2—C1 | 107.96 (13) | C2—C14—H14B | 109.5 |
C14—C2—C1 | 112.43 (18) | H14A—C14—H14B | 109.5 |
C3—C2—H2 | 107.7 | C2—C14—H14C | 109.5 |
C14—C2—H2 | 107.7 | H14A—C14—H14C | 109.5 |
C1—C2—H2 | 107.7 | H14B—C14—H14C | 109.5 |
O1—C3—C2 | 122.82 (18) | C16—C15—C20 | 117.43 (16) |
O1—C3—C4 | 121.76 (18) | C16—C15—C1 | 120.30 (14) |
C2—C3—C4 | 115.39 (14) | C20—C15—C1 | 122.27 (15) |
C3—C4—C13 | 112.14 (15) | C17—C16—C15 | 121.94 (17) |
C3—C4—C5 | 108.37 (13) | C17—C16—H16 | 119.0 |
C13—C4—C5 | 111.53 (16) | C15—C16—H16 | 119.0 |
C3—C4—H4 | 108.2 | C18—C17—C16 | 119.30 (19) |
C13—C4—H4 | 108.2 | C18—C17—H17 | 120.4 |
C5—C4—H4 | 108.2 | C16—C17—H17 | 120.4 |
N1—C5—C6 | 110.18 (11) | C17—C18—C19 | 120.87 (19) |
N1—C5—C4 | 114.00 (13) | C17—C18—H18 | 119.6 |
C6—C5—C4 | 112.25 (12) | C19—C18—H18 | 119.6 |
N1—C5—H5 | 106.6 | C18—C19—C20 | 119.44 (17) |
C6—C5—H5 | 106.6 | C18—C19—H19 | 120.3 |
C4—C5—H5 | 106.6 | C20—C19—H19 | 120.3 |
C11—C6—C7 | 117.73 (15) | O3—C20—C19 | 123.47 (15) |
C11—C6—C5 | 119.99 (14) | O3—C20—C15 | 115.54 (15) |
C7—C6—C5 | 122.28 (15) | C19—C20—C15 | 120.99 (16) |
O2—C7—C8 | 123.97 (16) | O3—C21—H21A | 109.5 |
O2—C7—C6 | 115.70 (14) | O3—C21—H21B | 109.5 |
C8—C7—C6 | 120.33 (18) | H21A—C21—H21B | 109.5 |
C9—C8—C7 | 119.97 (19) | O3—C21—H21C | 109.5 |
C9—C8—H8 | 120.0 | H21A—C21—H21C | 109.5 |
C7—C8—H8 | 120.0 | H21B—C21—H21C | 109.5 |
C8—C9—C10 | 120.81 (18) | C1—N1—C5 | 113.75 (11) |
C8—C9—H9 | 119.6 | C1—N1—H1 | 109.1 (11) |
C10—C9—H9 | 119.6 | C5—N1—H1 | 110.0 (11) |
C9—C10—C11 | 119.2 (2) | C7—O2—C12 | 118.78 (15) |
C9—C10—H10 | 120.4 | C20—O3—C21 | 118.41 (15) |
C11—C10—H10 | 120.4 | C23—C22—H22A | 109.5 |
C6—C11—C10 | 121.98 (18) | C23—C22—H22B | 109.5 |
C6—C11—H11 | 119.0 | H22A—C22—H22B | 109.5 |
C10—C11—H11 | 119.0 | C23—C22—H22C | 109.5 |
O2—C12—H12A | 109.5 | H22A—C22—H22C | 109.5 |
O2—C12—H12B | 109.5 | H22B—C22—H22C | 109.5 |
H12A—C12—H12B | 109.5 | O4—C23—O5 | 121.44 (16) |
O2—C12—H12C | 109.5 | O4—C23—C22 | 122.88 (18) |
H12A—C12—H12C | 109.5 | O5—C23—C22 | 115.69 (17) |
H12B—C12—H12C | 109.5 | C23—O5—H5A | 109.5 |
N1—C1—C2—C3 | 53.96 (16) | C8—C9—C10—C11 | −0.2 (3) |
C15—C1—C2—C3 | 179.92 (12) | C7—C6—C11—C10 | −0.2 (3) |
N1—C1—C2—C14 | 179.33 (14) | C5—C6—C11—C10 | 179.02 (16) |
C15—C1—C2—C14 | −54.70 (18) | C9—C10—C11—C6 | 0.7 (3) |
C14—C2—C3—O1 | −3.6 (3) | N1—C1—C15—C16 | −117.88 (16) |
C1—C2—C3—O1 | 121.43 (18) | C2—C1—C15—C16 | 114.79 (18) |
C14—C2—C3—C4 | 178.51 (16) | N1—C1—C15—C20 | 62.78 (19) |
C1—C2—C3—C4 | −56.48 (18) | C2—C1—C15—C20 | −64.54 (19) |
O1—C3—C4—C13 | −0.3 (2) | C20—C15—C16—C17 | 0.1 (3) |
C2—C3—C4—C13 | 177.66 (15) | C1—C15—C16—C17 | −179.23 (18) |
O1—C3—C4—C5 | −123.82 (18) | C15—C16—C17—C18 | −1.3 (3) |
C2—C3—C4—C5 | 54.13 (19) | C16—C17—C18—C19 | 1.2 (3) |
C3—C4—C5—N1 | −49.38 (17) | C17—C18—C19—C20 | 0.0 (3) |
C13—C4—C5—N1 | −173.28 (13) | C18—C19—C20—O3 | 179.78 (18) |
C3—C4—C5—C6 | −175.55 (13) | C18—C19—C20—C15 | −1.1 (3) |
C13—C4—C5—C6 | 60.54 (18) | C16—C15—C20—O3 | −179.77 (15) |
N1—C5—C6—C11 | 124.36 (15) | C1—C15—C20—O3 | −0.4 (2) |
C4—C5—C6—C11 | −107.43 (17) | C16—C15—C20—C19 | 1.1 (3) |
N1—C5—C6—C7 | −56.50 (18) | C1—C15—C20—C19 | −179.58 (16) |
C4—C5—C6—C7 | 71.71 (18) | C15—C1—N1—C5 | 179.12 (12) |
C11—C6—C7—O2 | 179.10 (14) | C2—C1—N1—C5 | −53.27 (16) |
C5—C6—C7—O2 | −0.1 (2) | C6—C5—N1—C1 | 178.43 (12) |
C11—C6—C7—C8 | −0.8 (2) | C4—C5—N1—C1 | 51.18 (16) |
C5—C6—C7—C8 | −179.95 (15) | C8—C7—O2—C12 | −0.2 (3) |
O2—C7—C8—C9 | −178.64 (17) | C6—C7—O2—C12 | 179.87 (16) |
C6—C7—C8—C9 | 1.2 (3) | C19—C20—O3—C21 | −16.0 (3) |
C7—C8—C9—C10 | −0.7 (3) | C15—C20—O3—C21 | 164.90 (17) |
D—H···A | D—H | H···A | D···A | D—H···A |
O5—H5A···N1i | 0.82 | 1.82 | 2.642 (2) | 178 |
N1—H1···O2 | 0.869 (18) | 2.210 (16) | 2.835 (2) | 128.6 (14) |
N1—H1···O3 | 0.869 (17) | 2.322 (18) | 2.9241 (17) | 126.6 (14) |
C19—H19···O4ii | 0.93 | 2.51 | 3.441 (2) | 175 |
C22—H22C···O5iii | 0.96 | 2.54 | 3.482 (3) | 167 |
Symmetry codes: (i) −x+1, −y+1, −z+1; (ii) −x, −y+1, −z+1; (iii) −x+1, −y+2, −z+1. |
Experimental details
Crystal data | |
Chemical formula | C21H25NO3·C2H4O2 |
Mr | 399.47 |
Crystal system, space group | Triclinic, P1 |
Temperature (K) | 292 |
a, b, c (Å) | 9.3059 (5), 10.7052 (8), 11.8950 (7) |
α, β, γ (°) | 94.432 (3), 93.341 (2), 109.502 (3) |
V (Å3) | 1109.21 (12) |
Z | 2 |
Radiation type | Mo Kα |
µ (mm−1) | 0.08 |
Crystal size (mm) | 0.25 × 0.23 × 0.2 |
Data collection | |
Diffractometer | Bruker SMART APEXII area-detector diffractometer |
Absorption correction | Multi-scan (SADABS; Bruker, 2008) |
Tmin, Tmax | 0.979, 0.983 |
No. of measured, independent and observed [I > 2σ(I)] reflections | 19986, 5528, 3271 |
Rint | 0.031 |
(sin θ/λ)max (Å−1) | 0.668 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.049, 0.173, 1.00 |
No. of reflections | 5528 |
No. of parameters | 271 |
H-atom treatment | H atoms treated by a mixture of independent and constrained refinement |
Δρmax, Δρmin (e Å−3) | 0.32, −0.26 |
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 |
O5—H5A···N1i | 0.82 | 1.82 | 2.642 (2) | 178.2 |
N1—H1···O2 | 0.869 (18) | 2.210 (16) | 2.835 (2) | 128.6 (14) |
N1—H1···O3 | 0.869 (17) | 2.322 (18) | 2.9241 (17) | 126.6 (14) |
C19—H19···O4ii | 0.93 | 2.51 | 3.441 (2) | 175.4 |
C22—H22C···O5iii | 0.96 | 2.54 | 3.482 (3) | 167.2 |
Symmetry codes: (i) −x+1, −y+1, −z+1; (ii) −x, −y+1, −z+1; (iii) −x+1, −y+2, −z+1. |
Acknowledgements
GA and YTJ are grateful for the support provided by the second stage of the BK21 program, Republic of Korea. SS and DV thank the TBI X-ray Facility, CAS in Crystallography and Biophysics, University of Madras, India, for the data collection and the University Grants Commission (UGC&SAP) for financial support.
References
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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.
In continuation of our work on establishing the crystal structure and conformation of 2,6-diaryl piperidine-4-ones and their derivatives (Aridoss et al., 2008, 2009 and Gayathri et al., 2008), we are reporting here the crystal structure of the title compound wherein the piperidone ring adopts chair conformation irrespective of the substituents' on both sides of carbonyl and secondary nitrogen in the ring.
In the present structure, the piperidone ring adopts a chair conformation with atoms N1 and C3 deviating by -0.584 (2) and 0.628 (6) Å, respectively,from the least-sqaures plane defined by the remaining atoms (C1/C2/C4/C5) in the ring. When compared with the reported structures of piperidone derivatives (Gayathri et al., 2008), it is clear that the conformation of the piperidone ring is highly influenced by the substitutions at various positions. The molecule is stabilized by N—H···O intramolecular interaction wherein, N1 atom act as a donor to O2 and O3, generating two S(6) motifs. The crystal packing is stabilized by N—H···O, O—H···N and C—H···O intra and intermolecular interactions. The sum of the bond angles around the atom N1(336.6 (3)°) of the piperidone ring in the molecule is in accordance with sp3 hybridization.
The puckering parameters (Cremer & Pople, 1975) and the smallest displacement asymmetry parameters (Nardelli, 1983) for the piperidine ring are q2 = 0.041 (1) Å, q3 = 0.534 (4) Å; QT = 0.536 (1) Å and θ = 4.40 (1)°,φ2 = 135.887 (8)°, respectively.