organic compounds
3,5-Dimethyl-1-{2-[(5-methyl-1,3,4-thiadiazol-2-yl)sulfanyl]acetyl}-2,6-diphenylpiperidin-4-one
aResearch Development Centre, Orchid Chemicals and Pharmaceuticals Ltd, Sozhinganallur, Chennai 600 119, India, bDepartment of Chemistry, Presidency College (Autonomous), Chennai 600 005, India, and cCentre of Advanced Study in Crystallography and Biophysics, University of Madras, Guindy Campus, Chennai 600 025, India
*Correspondence e-mail: mnpsy2004@yahoo.com
In the title compound, C24H25N3O2S2, the piperidine ring adopts a distorted boat conformation. The phenyl rings subtend angles of 75.6 (1)° and 86.3 (1)° with the mean plane of the piperidine ring. In the crystal, molecules are linked through a network C—H⋯N hydrogen bonds, forming zigzag chains along [100]. The thiadiazol ring methyl group is disordered over two positions with an occupancy ratio of 0.69 (4):0.31 (4).
Related literature
For the biological activity of piperidine derivatives, see: Aridoss et al. (2009). For puckering parameters, see: Cremer & Pople (1975) and for asymmetry parameters, see: Nardelli (1983). For hydrogen-bond motifs, see: Bernstein et al.(1995).
Experimental
Crystal data
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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 for Windows (Farrugia, 2012); software used to prepare material for publication: SHELXL97 and PLATON (Spek, 2009).
Supporting information
10.1107/S1600536813012014/ng5326sup1.cif
contains datablocks global, I. DOI:Structure factors: contains datablock I. DOI: 10.1107/S1600536813012014/ng5326Isup2.hkl
Supporting information file. DOI: 10.1107/S1600536813012014/ng5326Isup3.cml
To anhydrous DMF (10 ml), N-chloroacetyl-3,5-dimethyl-2,6-diphenylpiperidin-4-one (1 mole), 5-Methyl-1,3,4-thiadiazole-2-thiol(1 mole) followed by potassium carbonate (1.5 mole) was added and stirred for 1 hr at room temperature. The reaction mass was heated to 60° C and stirred. The reaction was monitored using TLC. After completion of reaction, the reaction mass was quenched into water and the product was extracted with dichloromethane. The dichloromethane layer distilled completely and to the residue methanol was added and kept overnight. The solid obtained was filtered and dried at 60° C under vacuum. Single crystal was obtained by re-crystallization using ethanol.
N and C-bound 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(C) for methyl H atoms and 1.2Ueq(C) for all other H atoms. The methyl atom (C25) is disordered over two set of positions with refined site-occupancies ratio of 0.69 (4)/0.31 (4).
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 for Windows (Farrugia, 2012); software used to prepare material for publication: SHELXL97 (Sheldrick, 2008) and PLATON (Spek, 2009).C24H25N3O2S2 | F(000) = 952 |
Mr = 451.59 | Dx = 1.307 Mg m−3 |
Orthorhombic, P212121 | Mo Kα radiation, λ = 0.71073 Å |
Hall symbol: P 2ac 2ab | Cell parameters from 4138 reflections |
a = 9.1342 (6) Å | θ = 1.5–28.4° |
b = 9.2874 (6) Å | µ = 0.26 mm−1 |
c = 27.0454 (14) Å | T = 293 K |
V = 2294.3 (2) Å3 | Block, white crystalline |
Z = 4 | 0.30 × 0.30 × 0.25 mm |
Bruker SMART APEXII CCD diffractometer | 4215 independent reflections |
Radiation source: fine-focus sealed tube | 3623 reflections with I > 2σ(I) |
Graphite monochromator | Rint = 0.033 |
ω and ϕ scans | θmax = 25.5°, θmin = 1.5° |
Absorption correction: multi-scan (SADABS; Bruker, 2008) | h = −11→10 |
Tmin = 0.927, Tmax = 0.938 | k = −10→11 |
10655 measured reflections | l = −32→32 |
Refinement on F2 | Secondary atom site location: difference Fourier map |
Least-squares matrix: full | Hydrogen site location: inferred from neighbouring sites |
R[F2 > 2σ(F2)] = 0.040 | H-atom parameters constrained |
wR(F2) = 0.098 | w = 1/[σ2(Fo2) + (0.0407P)2 + 0.4037P] where P = (Fo2 + 2Fc2)/3 |
S = 1.06 | (Δ/σ)max = 0.003 |
4215 reflections | Δρmax = 0.18 e Å−3 |
293 parameters | Δρmin = −0.24 e Å−3 |
2 restraints | Absolute structure: Flack (1983), 1461 Friedel pairs |
Primary atom site location: structure-invariant direct methods | Absolute structure parameter: 0.26 (8) |
C24H25N3O2S2 | V = 2294.3 (2) Å3 |
Mr = 451.59 | Z = 4 |
Orthorhombic, P212121 | Mo Kα radiation |
a = 9.1342 (6) Å | µ = 0.26 mm−1 |
b = 9.2874 (6) Å | T = 293 K |
c = 27.0454 (14) Å | 0.30 × 0.30 × 0.25 mm |
Bruker SMART APEXII CCD diffractometer | 4215 independent reflections |
Absorption correction: multi-scan (SADABS; Bruker, 2008) | 3623 reflections with I > 2σ(I) |
Tmin = 0.927, Tmax = 0.938 | Rint = 0.033 |
10655 measured reflections |
R[F2 > 2σ(F2)] = 0.040 | H-atom parameters constrained |
wR(F2) = 0.098 | Δρmax = 0.18 e Å−3 |
S = 1.06 | Δρmin = −0.24 e Å−3 |
4215 reflections | Absolute structure: Flack (1983), 1461 Friedel pairs |
293 parameters | Absolute structure parameter: 0.26 (8) |
2 restraints |
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) | |
C2 | 0.8537 (3) | 0.3491 (3) | 0.31092 (8) | 0.0434 (6) | |
H2 | 0.9412 | 0.4016 | 0.3003 | 0.052* | |
C3 | 0.7285 (3) | 0.4013 (3) | 0.27855 (9) | 0.0498 (6) | |
H3 | 0.7412 | 0.3594 | 0.2456 | 0.060* | |
C4 | 0.5804 (3) | 0.3549 (3) | 0.29802 (10) | 0.0557 (7) | |
C5 | 0.5761 (3) | 0.2856 (3) | 0.34821 (9) | 0.0468 (6) | |
H5 | 0.6113 | 0.1866 | 0.3442 | 0.056* | |
C6 | 0.6804 (2) | 0.3605 (3) | 0.38547 (8) | 0.0409 (5) | |
H6 | 0.6351 | 0.4523 | 0.3948 | 0.049* | |
C7 | 0.6940 (2) | 0.2704 (3) | 0.43237 (9) | 0.0420 (6) | |
C8 | 0.6392 (3) | 0.3216 (3) | 0.47632 (9) | 0.0565 (7) | |
H8 | 0.5926 | 0.4105 | 0.4773 | 0.068* | |
C9 | 0.6530 (4) | 0.2415 (4) | 0.51908 (11) | 0.0761 (10) | |
H9 | 0.6165 | 0.2776 | 0.5487 | 0.091* | |
C10 | 0.7197 (4) | 0.1100 (4) | 0.51842 (13) | 0.0766 (10) | |
H10 | 0.7295 | 0.0570 | 0.5474 | 0.092* | |
C11 | 0.7717 (4) | 0.0571 (4) | 0.47490 (13) | 0.0716 (9) | |
H11 | 0.8162 | −0.0329 | 0.4741 | 0.086* | |
C12 | 0.7588 (3) | 0.1361 (3) | 0.43181 (10) | 0.0559 (7) | |
H12 | 0.7941 | 0.0986 | 0.4022 | 0.067* | |
C13 | 0.8916 (3) | 0.1899 (3) | 0.30846 (8) | 0.0431 (6) | |
C14 | 1.0060 (3) | 0.1415 (3) | 0.33779 (9) | 0.0569 (7) | |
H14 | 1.0598 | 0.2074 | 0.3562 | 0.068* | |
C15 | 1.0411 (3) | −0.0013 (4) | 0.34010 (12) | 0.0689 (9) | |
H15 | 1.1161 | −0.0316 | 0.3609 | 0.083* | |
C16 | 0.9671 (4) | −0.1006 (3) | 0.31216 (12) | 0.0705 (9) | |
H16 | 0.9906 | −0.1978 | 0.3143 | 0.085* | |
C17 | 0.8584 (4) | −0.0551 (3) | 0.28114 (12) | 0.0667 (8) | |
H17 | 0.8097 | −0.1209 | 0.2611 | 0.080* | |
C18 | 0.8208 (3) | 0.0898 (3) | 0.27956 (10) | 0.0535 (7) | |
H18 | 0.7463 | 0.1197 | 0.2585 | 0.064* | |
C19 | 0.7301 (4) | 0.5638 (3) | 0.27324 (12) | 0.0756 (9) | |
H19A | 0.8236 | 0.5941 | 0.2608 | 0.113* | |
H19B | 0.7130 | 0.6073 | 0.3049 | 0.113* | |
H19C | 0.6546 | 0.5929 | 0.2506 | 0.113* | |
C20 | 0.4220 (3) | 0.2764 (4) | 0.36868 (12) | 0.0714 (9) | |
H20A | 0.4243 | 0.2312 | 0.4006 | 0.107* | |
H20B | 0.3621 | 0.2205 | 0.3467 | 0.107* | |
H20C | 0.3820 | 0.3715 | 0.3717 | 0.107* | |
C21 | 0.9216 (3) | 0.4863 (3) | 0.38323 (9) | 0.0447 (6) | |
C22 | 0.8900 (3) | 0.5401 (3) | 0.43507 (9) | 0.0444 (6) | |
H22A | 0.9070 | 0.4641 | 0.4590 | 0.053* | |
H22B | 0.7889 | 0.5711 | 0.4377 | 0.053* | |
C23 | 0.9909 (3) | 0.7090 (3) | 0.50966 (9) | 0.0471 (6) | |
C24 | 0.9507 (4) | 0.7112 (5) | 0.59575 (11) | 0.0869 (12) | |
N1 | 0.8240 (2) | 0.3941 (2) | 0.36250 (7) | 0.0391 (4) | |
N2 | 1.0669 (3) | 0.8047 (3) | 0.53206 (9) | 0.0749 (8) | |
N3 | 1.0440 (3) | 0.8048 (3) | 0.58237 (9) | 0.0874 (10) | |
O1 | 0.4720 (3) | 0.3740 (3) | 0.27404 (9) | 0.1004 (9) | |
O2 | 1.0350 (2) | 0.5239 (2) | 0.36260 (7) | 0.0672 (6) | |
S1 | 1.01181 (9) | 0.68920 (7) | 0.44633 (2) | 0.0565 (2) | |
S2 | 0.88298 (10) | 0.60962 (11) | 0.54817 (3) | 0.0817 (3) | |
C25A | 0.884 (3) | 0.715 (3) | 0.6474 (4) | 0.123 (7) | 0.69 (4) |
H25A | 0.8855 | 0.6198 | 0.6613 | 0.185* | 0.69 (4) |
H25B | 0.7853 | 0.7490 | 0.6455 | 0.185* | 0.69 (4) |
H25C | 0.9407 | 0.7784 | 0.6680 | 0.185* | 0.69 (4) |
C25B | 0.951 (3) | 0.649 (3) | 0.6513 (6) | 0.076 (6) | 0.31 (4) |
H25D | 1.0483 | 0.6177 | 0.6598 | 0.113* | 0.31 (4) |
H25E | 0.8853 | 0.5682 | 0.6534 | 0.113* | 0.31 (4) |
H25F | 0.9202 | 0.7224 | 0.6738 | 0.113* | 0.31 (4) |
U11 | U22 | U33 | U12 | U13 | U23 | |
C2 | 0.0469 (13) | 0.0527 (15) | 0.0307 (11) | −0.0076 (12) | 0.0032 (10) | −0.0014 (10) |
C3 | 0.0618 (16) | 0.0515 (15) | 0.0360 (13) | 0.0021 (13) | −0.0031 (11) | −0.0025 (12) |
C4 | 0.0517 (15) | 0.0668 (18) | 0.0485 (15) | 0.0017 (13) | −0.0114 (12) | −0.0039 (13) |
C5 | 0.0402 (13) | 0.0516 (15) | 0.0485 (14) | −0.0038 (11) | −0.0022 (11) | −0.0039 (12) |
C6 | 0.0387 (12) | 0.0446 (13) | 0.0393 (12) | 0.0024 (10) | 0.0010 (10) | −0.0030 (11) |
C7 | 0.0361 (12) | 0.0488 (15) | 0.0411 (13) | −0.0055 (11) | 0.0021 (10) | −0.0002 (11) |
C8 | 0.0613 (17) | 0.0627 (17) | 0.0456 (15) | −0.0139 (14) | 0.0082 (13) | −0.0046 (14) |
C9 | 0.088 (2) | 0.100 (3) | 0.0400 (15) | −0.036 (2) | 0.0062 (15) | −0.0004 (18) |
C10 | 0.074 (2) | 0.093 (3) | 0.063 (2) | −0.032 (2) | −0.0199 (17) | 0.030 (2) |
C11 | 0.0616 (19) | 0.071 (2) | 0.082 (2) | 0.0007 (16) | −0.0033 (17) | 0.0289 (19) |
C12 | 0.0499 (14) | 0.0580 (16) | 0.0597 (17) | 0.0043 (13) | 0.0076 (13) | 0.0088 (14) |
C13 | 0.0428 (13) | 0.0522 (14) | 0.0344 (11) | −0.0030 (12) | 0.0071 (10) | −0.0059 (11) |
C14 | 0.0457 (14) | 0.0730 (18) | 0.0520 (15) | 0.0061 (15) | 0.0007 (13) | −0.0141 (13) |
C15 | 0.0548 (18) | 0.083 (2) | 0.0684 (19) | 0.0264 (17) | 0.0023 (15) | −0.0010 (17) |
C16 | 0.069 (2) | 0.0571 (17) | 0.085 (2) | 0.0112 (17) | 0.0170 (17) | −0.0013 (17) |
C17 | 0.072 (2) | 0.0482 (16) | 0.080 (2) | −0.0047 (15) | 0.0036 (17) | −0.0152 (15) |
C18 | 0.0551 (16) | 0.0556 (16) | 0.0499 (15) | −0.0007 (13) | −0.0023 (12) | −0.0042 (13) |
C19 | 0.096 (3) | 0.0586 (18) | 0.072 (2) | 0.0069 (18) | 0.0009 (19) | 0.0069 (17) |
C20 | 0.0438 (15) | 0.100 (3) | 0.0701 (19) | −0.0074 (16) | 0.0006 (14) | −0.0088 (19) |
C21 | 0.0460 (14) | 0.0477 (14) | 0.0404 (13) | −0.0020 (12) | 0.0018 (11) | −0.0019 (11) |
C22 | 0.0424 (12) | 0.0435 (13) | 0.0474 (14) | −0.0041 (11) | 0.0012 (11) | −0.0111 (11) |
C23 | 0.0478 (13) | 0.0401 (13) | 0.0533 (14) | −0.0038 (12) | −0.0056 (12) | −0.0073 (11) |
C24 | 0.085 (2) | 0.128 (3) | 0.0478 (16) | −0.058 (2) | 0.0071 (16) | −0.0245 (19) |
N1 | 0.0402 (10) | 0.0430 (11) | 0.0342 (9) | −0.0039 (9) | 0.0017 (8) | −0.0036 (9) |
N2 | 0.097 (2) | 0.0737 (17) | 0.0540 (14) | −0.0434 (16) | 0.0062 (13) | −0.0155 (13) |
N3 | 0.106 (2) | 0.105 (2) | 0.0513 (14) | −0.057 (2) | 0.0087 (14) | −0.0253 (15) |
O1 | 0.0660 (14) | 0.159 (2) | 0.0759 (14) | −0.0036 (16) | −0.0281 (12) | 0.0246 (16) |
O2 | 0.0582 (12) | 0.0878 (14) | 0.0554 (11) | −0.0297 (11) | 0.0149 (10) | −0.0213 (10) |
S1 | 0.0768 (5) | 0.0470 (3) | 0.0457 (3) | −0.0182 (3) | 0.0007 (3) | −0.0046 (3) |
S2 | 0.0872 (6) | 0.1083 (7) | 0.0495 (4) | −0.0573 (5) | 0.0084 (4) | −0.0189 (4) |
C25A | 0.122 (10) | 0.190 (16) | 0.058 (4) | −0.076 (11) | 0.007 (5) | −0.031 (6) |
C25B | 0.077 (11) | 0.117 (14) | 0.033 (5) | −0.028 (9) | 0.015 (6) | −0.015 (6) |
C2—N1 | 1.481 (3) | C16—C17 | 1.367 (4) |
C2—C3 | 1.519 (3) | C16—H16 | 0.9300 |
C2—C13 | 1.520 (3) | C17—C18 | 1.389 (4) |
C2—H2 | 0.9800 | C17—H17 | 0.9300 |
C3—C4 | 1.515 (4) | C18—H18 | 0.9300 |
C3—C19 | 1.516 (4) | C19—H19A | 0.9600 |
C3—H3 | 0.9800 | C19—H19B | 0.9600 |
C4—O1 | 1.197 (3) | C19—H19C | 0.9600 |
C4—C5 | 1.503 (4) | C20—H20A | 0.9600 |
C5—C20 | 1.515 (4) | C20—H20B | 0.9600 |
C5—C6 | 1.552 (3) | C20—H20C | 0.9600 |
C5—H5 | 0.9800 | C21—O2 | 1.227 (3) |
C6—N1 | 1.484 (3) | C21—N1 | 1.357 (3) |
C6—C7 | 1.525 (3) | C21—C22 | 1.516 (3) |
C6—H6 | 0.9800 | C22—S1 | 1.802 (2) |
C7—C8 | 1.375 (4) | C22—H22A | 0.9700 |
C7—C12 | 1.381 (4) | C22—H22B | 0.9700 |
C8—C9 | 1.380 (4) | C23—N2 | 1.280 (3) |
C8—H8 | 0.9300 | C23—S2 | 1.705 (3) |
C9—C10 | 1.365 (5) | C23—S1 | 1.733 (3) |
C9—H9 | 0.9300 | C24—N3 | 1.270 (4) |
C10—C11 | 1.361 (5) | C24—C25A | 1.523 (10) |
C10—H10 | 0.9300 | C24—C25B | 1.61 (2) |
C11—C12 | 1.382 (4) | C24—S2 | 1.711 (3) |
C11—H11 | 0.9300 | N2—N3 | 1.377 (3) |
C12—H12 | 0.9300 | C25A—H25A | 0.9600 |
C13—C18 | 1.376 (4) | C25A—H25B | 0.9600 |
C13—C14 | 1.387 (4) | C25A—H25C | 0.9600 |
C14—C15 | 1.366 (4) | C25B—H25D | 0.9600 |
C14—H14 | 0.9300 | C25B—H25E | 0.9600 |
C15—C16 | 1.370 (5) | C25B—H25F | 0.9600 |
C15—H15 | 0.9300 | ||
N1—C2—C3 | 108.3 (2) | C17—C16—C15 | 119.3 (3) |
N1—C2—C13 | 110.96 (19) | C17—C16—H16 | 120.4 |
C3—C2—C13 | 117.2 (2) | C15—C16—H16 | 120.4 |
N1—C2—H2 | 106.6 | C16—C17—C18 | 119.9 (3) |
C3—C2—H2 | 106.6 | C16—C17—H17 | 120.1 |
C13—C2—H2 | 106.6 | C18—C17—H17 | 120.1 |
C4—C3—C19 | 108.9 (2) | C13—C18—C17 | 121.4 (3) |
C4—C3—C2 | 112.4 (2) | C13—C18—H18 | 119.3 |
C19—C3—C2 | 111.4 (2) | C17—C18—H18 | 119.3 |
C4—C3—H3 | 108.0 | C3—C19—H19A | 109.5 |
C19—C3—H3 | 108.0 | C3—C19—H19B | 109.5 |
C2—C3—H3 | 108.0 | H19A—C19—H19B | 109.5 |
O1—C4—C5 | 122.1 (3) | C3—C19—H19C | 109.5 |
O1—C4—C3 | 120.6 (3) | H19A—C19—H19C | 109.5 |
C5—C4—C3 | 117.3 (2) | H19B—C19—H19C | 109.5 |
C4—C5—C20 | 112.2 (2) | C5—C20—H20A | 109.5 |
C4—C5—C6 | 112.2 (2) | C5—C20—H20B | 109.5 |
C20—C5—C6 | 111.0 (2) | H20A—C20—H20B | 109.5 |
C4—C5—H5 | 107.0 | C5—C20—H20C | 109.5 |
C20—C5—H5 | 107.0 | H20A—C20—H20C | 109.5 |
C6—C5—H5 | 107.0 | H20B—C20—H20C | 109.5 |
N1—C6—C7 | 113.06 (18) | O2—C21—N1 | 123.1 (2) |
N1—C6—C5 | 111.39 (18) | O2—C21—C22 | 119.2 (2) |
C7—C6—C5 | 110.1 (2) | N1—C21—C22 | 117.7 (2) |
N1—C6—H6 | 107.3 | C21—C22—S1 | 106.97 (17) |
C7—C6—H6 | 107.3 | C21—C22—H22A | 110.3 |
C5—C6—H6 | 107.3 | S1—C22—H22A | 110.3 |
C8—C7—C12 | 118.5 (2) | C21—C22—H22B | 110.3 |
C8—C7—C6 | 120.0 (2) | S1—C22—H22B | 110.3 |
C12—C7—C6 | 121.4 (2) | H22A—C22—H22B | 108.6 |
C7—C8—C9 | 120.3 (3) | N2—C23—S2 | 113.6 (2) |
C7—C8—H8 | 119.8 | N2—C23—S1 | 118.8 (2) |
C9—C8—H8 | 119.8 | S2—C23—S1 | 127.58 (15) |
C10—C9—C8 | 120.8 (3) | N3—C24—C25A | 120.8 (5) |
C10—C9—H9 | 119.6 | N3—C24—C25B | 120.7 (8) |
C8—C9—H9 | 119.6 | N3—C24—S2 | 113.9 (2) |
C11—C10—C9 | 119.3 (3) | C25A—C24—S2 | 124.0 (4) |
C11—C10—H10 | 120.3 | C25B—C24—S2 | 120.2 (8) |
C9—C10—H10 | 120.3 | C21—N1—C2 | 116.55 (19) |
C10—C11—C12 | 120.6 (3) | C21—N1—C6 | 122.68 (19) |
C10—C11—H11 | 119.7 | C2—N1—C6 | 119.78 (18) |
C12—C11—H11 | 119.7 | C23—N2—N3 | 112.7 (2) |
C7—C12—C11 | 120.4 (3) | C24—N3—N2 | 112.5 (2) |
C7—C12—H12 | 119.8 | C23—S1—C22 | 100.39 (12) |
C11—C12—H12 | 119.8 | C23—S2—C24 | 87.25 (14) |
C18—C13—C14 | 117.4 (2) | C24—C25A—H25A | 109.5 |
C18—C13—C2 | 125.1 (2) | C24—C25A—H25B | 109.5 |
C14—C13—C2 | 117.5 (2) | C24—C25A—H25C | 109.5 |
C15—C14—C13 | 121.2 (3) | C24—C25B—H25D | 109.5 |
C15—C14—H14 | 119.4 | C24—C25B—H25E | 109.5 |
C13—C14—H14 | 119.4 | H25D—C25B—H25E | 109.5 |
C14—C15—C16 | 120.8 (3) | C24—C25B—H25F | 109.5 |
C14—C15—H15 | 119.6 | H25D—C25B—H25F | 109.5 |
C16—C15—H15 | 119.6 | H25E—C25B—H25F | 109.5 |
N1—C2—C3—C4 | −52.8 (3) | C13—C14—C15—C16 | 2.2 (5) |
C13—C2—C3—C4 | 73.6 (3) | C14—C15—C16—C17 | 1.0 (5) |
N1—C2—C3—C19 | 69.8 (3) | C15—C16—C17—C18 | −2.2 (5) |
C13—C2—C3—C19 | −163.8 (2) | C14—C13—C18—C17 | 2.5 (4) |
C19—C3—C4—O1 | 64.1 (4) | C2—C13—C18—C17 | −177.1 (3) |
C2—C3—C4—O1 | −171.9 (3) | C16—C17—C18—C13 | 0.5 (5) |
C19—C3—C4—C5 | −115.6 (3) | O2—C21—C22—S1 | 15.4 (3) |
C2—C3—C4—C5 | 8.4 (3) | N1—C21—C22—S1 | −166.73 (18) |
O1—C4—C5—C20 | −13.2 (4) | O2—C21—N1—C2 | −5.2 (4) |
C3—C4—C5—C20 | 166.4 (3) | C22—C21—N1—C2 | 177.0 (2) |
O1—C4—C5—C6 | −139.0 (3) | O2—C21—N1—C6 | −173.8 (2) |
C3—C4—C5—C6 | 40.6 (3) | C22—C21—N1—C6 | 8.5 (3) |
C4—C5—C6—N1 | −43.1 (3) | C3—C2—N1—C21 | −117.4 (2) |
C20—C5—C6—N1 | −169.6 (2) | C13—C2—N1—C21 | 112.6 (2) |
C4—C5—C6—C7 | −169.4 (2) | C3—C2—N1—C6 | 51.5 (3) |
C20—C5—C6—C7 | 64.1 (3) | C13—C2—N1—C6 | −78.4 (3) |
N1—C6—C7—C8 | 121.4 (2) | C7—C6—N1—C21 | −70.2 (3) |
C5—C6—C7—C8 | −113.2 (3) | C5—C6—N1—C21 | 165.2 (2) |
N1—C6—C7—C12 | −59.6 (3) | C7—C6—N1—C2 | 121.6 (2) |
C5—C6—C7—C12 | 65.8 (3) | C5—C6—N1—C2 | −3.0 (3) |
C12—C7—C8—C9 | 1.9 (4) | S2—C23—N2—N3 | 0.2 (4) |
C6—C7—C8—C9 | −179.0 (2) | S1—C23—N2—N3 | −177.5 (2) |
C7—C8—C9—C10 | −0.7 (5) | C25A—C24—N3—N2 | −166.3 (15) |
C8—C9—C10—C11 | −0.6 (5) | C25B—C24—N3—N2 | 156.0 (14) |
C9—C10—C11—C12 | 0.7 (5) | S2—C24—N3—N2 | 1.3 (5) |
C8—C7—C12—C11 | −1.8 (4) | C23—N2—N3—C24 | −1.0 (5) |
C6—C7—C12—C11 | 179.2 (3) | N2—C23—S1—C22 | 177.6 (2) |
C10—C11—C12—C7 | 0.5 (5) | S2—C23—S1—C22 | 0.2 (2) |
N1—C2—C13—C18 | 124.6 (2) | C21—C22—S1—C23 | −167.14 (17) |
C3—C2—C13—C18 | −0.5 (3) | N2—C23—S2—C24 | 0.4 (3) |
N1—C2—C13—C14 | −55.0 (3) | S1—C23—S2—C24 | 177.8 (2) |
C3—C2—C13—C14 | 179.8 (2) | N3—C24—S2—C23 | −1.0 (3) |
C18—C13—C14—C15 | −3.8 (4) | C25A—C24—S2—C23 | 166.2 (16) |
C2—C13—C14—C15 | 175.8 (3) | C25B—C24—S2—C23 | −155.8 (14) |
D—H···A | D—H | H···A | D···A | D—H···A |
C6—H6···N3i | 0.98 | 2.48 | 3.460 (4) | 175 |
C22—H22B···N2i | 0.97 | 2.47 | 3.403 (4) | 161 |
C22—H22B···N3i | 0.97 | 2.57 | 3.505 (4) | 161 |
Symmetry code: (i) x−1/2, −y+3/2, −z+1. |
Experimental details
Crystal data | |
Chemical formula | C24H25N3O2S2 |
Mr | 451.59 |
Crystal system, space group | Orthorhombic, P212121 |
Temperature (K) | 293 |
a, b, c (Å) | 9.1342 (6), 9.2874 (6), 27.0454 (14) |
V (Å3) | 2294.3 (2) |
Z | 4 |
Radiation type | Mo Kα |
µ (mm−1) | 0.26 |
Crystal size (mm) | 0.30 × 0.30 × 0.25 |
Data collection | |
Diffractometer | Bruker SMART APEXII CCD diffractometer |
Absorption correction | Multi-scan (SADABS; Bruker, 2008) |
Tmin, Tmax | 0.927, 0.938 |
No. of measured, independent and observed [I > 2σ(I)] reflections | 10655, 4215, 3623 |
Rint | 0.033 |
(sin θ/λ)max (Å−1) | 0.606 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.040, 0.098, 1.06 |
No. of reflections | 4215 |
No. of parameters | 293 |
No. of restraints | 2 |
H-atom treatment | H-atom parameters constrained |
Δρmax, Δρmin (e Å−3) | 0.18, −0.24 |
Absolute structure | Flack (1983), 1461 Friedel pairs |
Absolute structure parameter | 0.26 (8) |
Computer programs: APEX2 (Bruker, 2008), SAINT (Bruker, 2008), SHELXS97 (Sheldrick, 2008), SHELXL97 (Sheldrick, 2008), ORTEP-3 for Windows (Farrugia, 2012), SHELXL97 (Sheldrick, 2008) and PLATON (Spek, 2009).
D—H···A | D—H | H···A | D···A | D—H···A |
C6—H6···N3i | 0.98 | 2.48 | 3.460 (4) | 174.5 |
C22—H22B···N2i | 0.97 | 2.47 | 3.403 (4) | 160.7 |
C22—H22B···N3i | 0.97 | 2.57 | 3.505 (4) | 160.8 |
Symmetry code: (i) x−1/2, −y+3/2, −z+1. |
Acknowledgements
SG thanks Orchid Chemicals and Pharmaceuticals Ltd (www.orchidpharma.com), Chennai, India, for consent to perform this research and PS is thankful to the UGC, New Delhi, for financial support in the form of a Research Fellowship in Science for Meritorious Students.
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 a way to find piperidin-4-one based lead drug molecules for the antimicrobial therapy, a new series of piperidin-4-one derivatives were prepared by condensing N-Chloroacetyl-2,6-diphenylpiperidin-4-one with 5-Methyl-1,3,4-thiadiazole-2-thiol. Report suggests that the substitution at chloro position of N-chloroacetyl-2,6-diphenylpiperidin-4-one alters the activity of parent compounds (Aridoss et al., 2009). 5-Methyl-1,3,4-thiadiazole-2-thiol is part of a number of cephalosporanic drugs viz Cefazolin and responsible for its activity. Keeping these two facts in mind, we have prepared a series of piperidin-4-ones. The present investigation was undertaken to establish the molecular structure and conformation of the title compound by X-ray diffraction method.
The ORTEP plot of the molecule is shown in Fig. 1. The piperidine ring adopts distorted boat conformation with the puckering parameters (Cremer & Pople, 1975) and the asymmetry parameters (Nardelli,1983) are: q2=0.663 (3) Å, q3 = -0.045 (3) Å, ϕ2 = 245.0 (2)° and Δs(N1 & C4)= 68.3 (2)°.
The heterocyclic 1,3,4-thiadiazole ring is planar with the maximum deviation of atom C24 is -0.007 (4)°. The bond lengths of the endocyclic bonds [C23–N2 = 1.280 (4) Å & C24–N3 = 1.270 (5) Å], clearly indicate that they are double bond in character. The methyl group substituted at C25 atom in thiadiazol ring is disordered over two positions with the site occupancy of 0.69 (4) and 0.31 (4).
The carbonyl group is oriented anti-periplanar to C2 [C2—C3—C4—O1=] -171.9 (3)° and anti-clinal to C6 [C6—C5—C4—O1=] -139.1 (3)°. The best plane of the piperidine ring and the attached phenyl rings [C7—C12 & C13—C18] are twisted away by 75.6 (1)° and 86.3 (1)°. The two phenyl rings are oriented to each other with a dihedral angle of 59.7 (1)°.
The crystal packing reveals that the symmetry related molecules are linked through a network of C—H···O, C—H···N & C—H···S types of intra and intermolecular interactions. The hydrogen bonded network play a role in stabilizing the molecules in the unit cell (Fig. 2). Interesting to note that the C22—H22B···N3 and C22—H22B···N2 interactions together constitute a pair of bifurcated donor bonds as shown in Fig. 3 (Bernstein et al., 1995).