organic compounds
N-{[1-(4-chlorobenzoyl)piperidin-4-yl]methyl}benzamide monohydrate
of 4-chloro-aPG and Research Department of Physics, Queen Mary's College, Chennai-4, Tamilnadu, India, and bDepartment of Chemistry, Madras Christian College, Chennai-59, India
*Correspondence e-mail: guqmc@yahoo.com
In the title compound, C20H20Cl2N2O2·H2O, the piperidine ring adopts a chair conformation with the two substituent benzene rings inclined to one another [dihedral angle 84.63 (9)°]. In the crystal, the components are linked by Ow—H⋯O, N—H⋯Ow (w = water) and C—H⋯O hydrogen bonds, generating a sheet structure lying parallel to (101).
Keywords: crystal structure; piperidine; benzamide; hydrogen bonding.
CCDC reference: 1014811
1. Related literature
For the synthesis of the title compound, see: Prathebha et al. (2013). For the biological activity of piperdine derivatives, see: Parthiban et al. (2005, 2009, 2011). For related structures, see: Prathebha et al. (2013, 2014); Ávila et al. (2010).
2. Experimental
2.1. Crystal data
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2.3. 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 for Windows (Farrugia, 2012); software used to prepare material for publication: SHELXL97 and PLATON (Spek, 2009).
Supporting information
CCDC reference: 1014811
10.1107/S1600536814018522/zs2310sup1.cif
contains datablocks I, New_Global_Publ_Block. DOI:Structure factors: contains datablock I. DOI: 10.1107/S1600536814018522/zs2310Isup2.hkl
Supporting information file. DOI: 10.1107/S1600536814018522/zs2310Isup3.cml
The procedure (Prathebha et al., 2013; 2014) adopted in the synthesis of the typical diamide is re-presented here (Fig. 3). To 4-aminomethylpiperidine (0.02 mol) in a 250 mL round-bottomed flask, 120 mL of ethyl methyl ketone was added and stirred at room temperature. After 5 minutes, triethylamine (0.04 mol) was added and the mixture was stirred for 15 minutes. 4-Chlorobenzoyl chloride (0.04 mol) was then added and the reaction mixture was stirred at room temperature for about 2 h. A white precipitate of triethylammonium chloride was formed. It was filtered and the filtrate was evaporated to obtain the crude product which was recrystallized twice from ethyl methyl ketone: yield: 82%.
H atoms were positioned geometrically and treated as riding on their parent atoms with C—H = 0.93–0.98 Å, N—H = 0.86 Å and O—H = 0.87 Å with U iso(H) = 1.5Ueq(C-methyl) = 1.2Ueq(N,C). The Uiso of the water H-atom were refined freely.
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).Fig. 1. The molecular structure of the title compound, with displacement ellipsoids drawn at the 30% probability level. | |
Fig. 2. The packing of the molecules in the unit cell, viewed along a. Dashed lines indicate the hydrogen bonds. | |
Fig. 3. Experimental procedure |
C20H20Cl2N2O2·H2O | Z = 4 |
Mr = 409.30 | F(000) = 856 |
Monoclinic, P21/n | Dx = 1.360 Mg m−3 |
Hall symbol: -P 2yn | Mo Kα radiation, λ = 0.71073 Å |
a = 8.965 (5) Å | Cell parameters from 4985 reflections |
b = 19.613 (5) Å | µ = 0.35 mm−1 |
c = 11.456 (5) Å | T = 293 K |
β = 96.989 (5)° | Block, colourless |
V = 1999.3 (15) Å3 | 0.20 × 0.15 × 0.10 mm |
Bruker APEII CCD diffractometer | 4985 independent reflections |
Radiation source: fine-focus sealed tube | 2967 reflections with I > 2σ(I) |
Graphite monochromator | Rint = 0.030 |
ω and ϕ scan | θmax = 28.3°, θmin = 2.1° |
Absorption correction: multi-scan (SADABS; Bruker, 2008) | h = −11→11 |
Tmin = 0.939, Tmax = 0.966 | k = −26→26 |
18886 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)] = 0.043 | Hydrogen site location: inferred from neighbouring sites |
wR(F2) = 0.120 | H atoms treated by a mixture of independent and constrained refinement |
S = 1.03 | w = 1/[σ2(Fo2) + (0.0472P)2 + 0.401P] where P = (Fo2 + 2Fc2)/3 |
4985 reflections | (Δ/σ)max < 0.001 |
252 parameters | Δρmax = 0.23 e Å−3 |
2 restraints | Δρmin = −0.30 e Å−3 |
C20H20Cl2N2O2·H2O | V = 1999.3 (15) Å3 |
Mr = 409.30 | Z = 4 |
Monoclinic, P21/n | Mo Kα radiation |
a = 8.965 (5) Å | µ = 0.35 mm−1 |
b = 19.613 (5) Å | T = 293 K |
c = 11.456 (5) Å | 0.20 × 0.15 × 0.10 mm |
β = 96.989 (5)° |
Bruker APEII CCD diffractometer | 4985 independent reflections |
Absorption correction: multi-scan (SADABS; Bruker, 2008) | 2967 reflections with I > 2σ(I) |
Tmin = 0.939, Tmax = 0.966 | Rint = 0.030 |
18886 measured reflections |
R[F2 > 2σ(F2)] = 0.043 | 2 restraints |
wR(F2) = 0.120 | H atoms treated by a mixture of independent and constrained refinement |
S = 1.03 | Δρmax = 0.23 e Å−3 |
4985 reflections | Δρmin = −0.30 e Å−3 |
252 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 | ||
C1 | 0.2856 (2) | 0.04517 (10) | −0.36865 (17) | 0.0557 (5) | |
C2 | 0.1651 (2) | 0.05009 (11) | −0.30553 (18) | 0.0604 (5) | |
H2 | 0.0676 | 0.0448 | −0.3426 | 0.072* | |
C3 | 0.1908 (2) | 0.06295 (10) | −0.18659 (17) | 0.0548 (5) | |
H3 | 0.1096 | 0.0658 | −0.1434 | 0.066* | |
C4 | 0.33501 (19) | 0.07168 (9) | −0.13004 (15) | 0.0445 (4) | |
C5 | 0.4537 (2) | 0.06734 (10) | −0.19643 (16) | 0.0508 (5) | |
H5 | 0.5513 | 0.0734 | −0.1601 | 0.061* | |
C6 | 0.4299 (2) | 0.05428 (11) | −0.31542 (17) | 0.0550 (5) | |
H6 | 0.5105 | 0.0517 | −0.3591 | 0.066* | |
C7 | 0.3542 (2) | 0.08172 (10) | 0.00066 (16) | 0.0499 (5) | |
C8 | 0.5234 (2) | 0.10784 (10) | 0.17983 (15) | 0.0525 (5) | |
H8A | 0.6209 | 0.0872 | 0.2027 | 0.063* | |
H8B | 0.4497 | 0.0820 | 0.2167 | 0.063* | |
C9 | 0.52633 (19) | 0.18034 (10) | 0.22638 (14) | 0.0443 (4) | |
H9 | 0.5999 | 0.2063 | 0.1877 | 0.053* | |
C10 | 0.5769 (2) | 0.18086 (10) | 0.35899 (15) | 0.0502 (5) | |
H10A | 0.5085 | 0.1533 | 0.3986 | 0.060* | |
H10B | 0.6764 | 0.1610 | 0.3745 | 0.060* | |
C11 | 0.5798 (2) | 0.25282 (11) | 0.40699 (15) | 0.0520 (5) | |
H11A | 0.6068 | 0.2517 | 0.4916 | 0.062* | |
H11B | 0.6553 | 0.2792 | 0.3731 | 0.062* | |
C12 | 0.3794 (2) | 0.28733 (11) | 0.25369 (15) | 0.0537 (5) | |
H12A | 0.4454 | 0.3159 | 0.2136 | 0.064* | |
H12B | 0.2794 | 0.3070 | 0.2418 | 0.064* | |
C13 | 0.3756 (2) | 0.21620 (10) | 0.20237 (15) | 0.0487 (4) | |
H13A | 0.3469 | 0.2189 | 0.1181 | 0.058* | |
H13B | 0.3000 | 0.1895 | 0.2357 | 0.058* | |
C14 | 0.3605 (2) | 0.32021 (10) | 0.45609 (15) | 0.0447 (4) | |
C15 | 0.41215 (19) | 0.31470 (9) | 0.58496 (14) | 0.0419 (4) | |
C16 | 0.4207 (2) | 0.25291 (10) | 0.64373 (16) | 0.0513 (5) | |
H16 | 0.3991 | 0.2126 | 0.6023 | 0.062* | |
C17 | 0.4615 (2) | 0.25100 (11) | 0.76433 (17) | 0.0561 (5) | |
H17 | 0.4668 | 0.2096 | 0.8043 | 0.067* | |
C18 | 0.4939 (2) | 0.31065 (11) | 0.82394 (15) | 0.0533 (5) | |
C19 | 0.4847 (2) | 0.37221 (11) | 0.76756 (16) | 0.0558 (5) | |
H19 | 0.5066 | 0.4123 | 0.8095 | 0.067* | |
C20 | 0.4425 (2) | 0.37407 (10) | 0.64751 (15) | 0.0492 (4) | |
H20 | 0.4345 | 0.4158 | 0.6086 | 0.059* | |
N1 | 0.48785 (17) | 0.10246 (8) | 0.05253 (13) | 0.0504 (4) | |
H1 | 0.5560 | 0.1131 | 0.0090 | 0.061* | |
N2 | 0.43298 (16) | 0.28557 (8) | 0.37952 (12) | 0.0483 (4) | |
O1 | 0.24827 (16) | 0.07042 (10) | 0.05634 (13) | 0.0782 (5) | |
O2 | 0.25144 (15) | 0.35694 (7) | 0.42328 (11) | 0.0607 (4) | |
O1W | 0.1758 (2) | −0.02509 (12) | 0.22242 (18) | 0.0874 (5) | |
Cl1 | 0.25541 (8) | 0.02408 (4) | −0.51685 (5) | 0.0906 (2) | |
Cl2 | 0.54727 (9) | 0.30789 (4) | 0.97486 (4) | 0.0908 (2) | |
H1WA | 0.188 (5) | −0.0575 (19) | 0.172 (3) | 0.19 (2)* | |
H1WB | 0.181 (9) | 0.002 (4) | 0.162 (5) | 0.34 (4)* |
U11 | U22 | U33 | U12 | U13 | U23 | |
C1 | 0.0626 (12) | 0.0528 (13) | 0.0495 (10) | 0.0066 (10) | −0.0011 (9) | −0.0074 (9) |
C2 | 0.0482 (11) | 0.0644 (14) | 0.0657 (13) | 0.0005 (10) | −0.0047 (9) | −0.0062 (10) |
C3 | 0.0457 (10) | 0.0572 (13) | 0.0622 (12) | −0.0030 (9) | 0.0088 (9) | −0.0050 (10) |
C4 | 0.0466 (10) | 0.0346 (10) | 0.0528 (10) | −0.0020 (8) | 0.0076 (8) | −0.0052 (8) |
C5 | 0.0447 (10) | 0.0519 (12) | 0.0556 (11) | −0.0026 (9) | 0.0056 (8) | −0.0118 (9) |
C6 | 0.0534 (11) | 0.0591 (13) | 0.0539 (11) | 0.0027 (9) | 0.0119 (9) | −0.0091 (9) |
C7 | 0.0498 (11) | 0.0476 (12) | 0.0538 (10) | −0.0021 (9) | 0.0121 (9) | −0.0048 (9) |
C8 | 0.0574 (11) | 0.0545 (13) | 0.0458 (10) | 0.0015 (9) | 0.0073 (8) | −0.0021 (9) |
C9 | 0.0436 (9) | 0.0514 (12) | 0.0384 (8) | −0.0011 (8) | 0.0074 (7) | −0.0037 (8) |
C10 | 0.0437 (10) | 0.0646 (14) | 0.0420 (9) | 0.0108 (9) | 0.0035 (7) | −0.0027 (9) |
C11 | 0.0414 (10) | 0.0711 (14) | 0.0427 (9) | 0.0064 (9) | 0.0013 (7) | −0.0124 (9) |
C12 | 0.0588 (11) | 0.0613 (13) | 0.0396 (9) | 0.0121 (10) | 0.0000 (8) | −0.0028 (9) |
C13 | 0.0477 (10) | 0.0586 (12) | 0.0386 (8) | 0.0028 (9) | 0.0001 (7) | −0.0037 (8) |
C14 | 0.0462 (10) | 0.0449 (11) | 0.0431 (9) | 0.0019 (9) | 0.0064 (7) | −0.0014 (8) |
C15 | 0.0413 (9) | 0.0459 (11) | 0.0392 (8) | 0.0041 (8) | 0.0083 (7) | −0.0010 (8) |
C16 | 0.0591 (11) | 0.0428 (11) | 0.0520 (10) | 0.0007 (9) | 0.0068 (8) | −0.0011 (9) |
C17 | 0.0653 (12) | 0.0505 (13) | 0.0532 (11) | 0.0020 (10) | 0.0098 (9) | 0.0136 (10) |
C18 | 0.0575 (11) | 0.0655 (14) | 0.0379 (9) | 0.0043 (10) | 0.0104 (8) | 0.0034 (9) |
C19 | 0.0689 (13) | 0.0513 (13) | 0.0472 (10) | 0.0008 (10) | 0.0072 (9) | −0.0079 (9) |
C20 | 0.0597 (11) | 0.0425 (11) | 0.0459 (9) | 0.0018 (9) | 0.0080 (8) | 0.0027 (8) |
N1 | 0.0529 (9) | 0.0543 (10) | 0.0456 (8) | −0.0062 (8) | 0.0124 (7) | −0.0097 (7) |
N2 | 0.0454 (8) | 0.0599 (10) | 0.0389 (7) | 0.0093 (7) | 0.0016 (6) | −0.0078 (7) |
O1 | 0.0602 (9) | 0.1147 (14) | 0.0636 (9) | −0.0184 (9) | 0.0238 (7) | −0.0073 (9) |
O2 | 0.0645 (8) | 0.0697 (10) | 0.0478 (7) | 0.0263 (7) | 0.0061 (6) | 0.0034 (7) |
O1W | 0.0768 (11) | 0.1049 (15) | 0.0855 (12) | −0.0057 (10) | 0.0296 (9) | −0.0120 (12) |
Cl1 | 0.0863 (4) | 0.1263 (6) | 0.0551 (3) | 0.0222 (4) | −0.0080 (3) | −0.0227 (3) |
Cl2 | 0.1259 (6) | 0.1059 (6) | 0.0391 (3) | 0.0055 (4) | 0.0041 (3) | 0.0075 (3) |
C1—C6 | 1.373 (3) | C11—H11A | 0.9700 |
C1—C2 | 1.374 (3) | C11—H11B | 0.9700 |
C1—Cl1 | 1.736 (2) | C12—N2 | 1.463 (2) |
C2—C3 | 1.377 (3) | C12—C13 | 1.513 (3) |
C2—H2 | 0.9300 | C12—H12A | 0.9700 |
C3—C4 | 1.385 (3) | C12—H12B | 0.9700 |
C3—H3 | 0.9300 | C13—H13A | 0.9700 |
C4—C5 | 1.384 (3) | C13—H13B | 0.9700 |
C4—C7 | 1.499 (2) | C14—O2 | 1.235 (2) |
C5—C6 | 1.378 (3) | C14—N2 | 1.339 (2) |
C5—H5 | 0.9300 | C14—C15 | 1.496 (2) |
C6—H6 | 0.9300 | C15—C20 | 1.377 (3) |
C7—O1 | 1.227 (2) | C15—C16 | 1.384 (3) |
C7—N1 | 1.334 (2) | C16—C17 | 1.386 (3) |
C8—N1 | 1.458 (2) | C16—H16 | 0.9300 |
C8—C9 | 1.518 (3) | C17—C18 | 1.368 (3) |
C8—H8A | 0.9700 | C17—H17 | 0.9300 |
C8—H8B | 0.9700 | C18—C19 | 1.367 (3) |
C9—C13 | 1.518 (3) | C18—Cl2 | 1.738 (2) |
C9—C10 | 1.532 (2) | C19—C20 | 1.382 (2) |
C9—H9 | 0.9800 | C19—H19 | 0.9300 |
C10—C11 | 1.514 (3) | C20—H20 | 0.9300 |
C10—H10A | 0.9700 | N1—H1 | 0.8600 |
C10—H10B | 0.9700 | O1W—H1WA | 0.872 (19) |
C11—N2 | 1.464 (2) | O1W—H1WB | 0.87 (2) |
C6—C1—C2 | 121.02 (19) | C10—C11—H11B | 109.5 |
C6—C1—Cl1 | 119.43 (16) | H11A—C11—H11B | 108.1 |
C2—C1—Cl1 | 119.50 (16) | N2—C12—C13 | 110.51 (15) |
C1—C2—C3 | 119.08 (18) | N2—C12—H12A | 109.5 |
C1—C2—H2 | 120.5 | C13—C12—H12A | 109.5 |
C3—C2—H2 | 120.5 | N2—C12—H12B | 109.5 |
C2—C3—C4 | 121.31 (18) | C13—C12—H12B | 109.5 |
C2—C3—H3 | 119.3 | H12A—C12—H12B | 108.1 |
C4—C3—H3 | 119.3 | C12—C13—C9 | 112.27 (15) |
C5—C4—C3 | 118.16 (17) | C12—C13—H13A | 109.1 |
C5—C4—C7 | 123.68 (16) | C9—C13—H13A | 109.1 |
C3—C4—C7 | 118.08 (16) | C12—C13—H13B | 109.1 |
C6—C5—C4 | 121.20 (17) | C9—C13—H13B | 109.1 |
C6—C5—H5 | 119.4 | H13A—C13—H13B | 107.9 |
C4—C5—H5 | 119.4 | O2—C14—N2 | 121.73 (16) |
C1—C6—C5 | 119.21 (18) | O2—C14—C15 | 118.73 (15) |
C1—C6—H6 | 120.4 | N2—C14—C15 | 119.53 (15) |
C5—C6—H6 | 120.4 | C20—C15—C16 | 119.44 (16) |
O1—C7—N1 | 122.23 (18) | C20—C15—C14 | 118.05 (16) |
O1—C7—C4 | 119.57 (17) | C16—C15—C14 | 122.37 (16) |
N1—C7—C4 | 118.20 (16) | C15—C16—C17 | 120.06 (18) |
N1—C8—C9 | 114.30 (15) | C15—C16—H16 | 120.0 |
N1—C8—H8A | 108.7 | C17—C16—H16 | 120.0 |
C9—C8—H8A | 108.7 | C18—C17—C16 | 119.27 (19) |
N1—C8—H8B | 108.7 | C18—C17—H17 | 120.4 |
C9—C8—H8B | 108.7 | C16—C17—H17 | 120.4 |
H8A—C8—H8B | 107.6 | C17—C18—C19 | 121.51 (17) |
C8—C9—C13 | 113.17 (15) | C17—C18—Cl2 | 119.09 (16) |
C8—C9—C10 | 110.19 (15) | C19—C18—Cl2 | 119.40 (16) |
C13—C9—C10 | 109.02 (14) | C18—C19—C20 | 119.14 (19) |
C8—C9—H9 | 108.1 | C18—C19—H19 | 120.4 |
C13—C9—H9 | 108.1 | C20—C19—H19 | 120.4 |
C10—C9—H9 | 108.1 | C15—C20—C19 | 120.57 (18) |
C11—C10—C9 | 110.88 (16) | C15—C20—H20 | 119.7 |
C11—C10—H10A | 109.5 | C19—C20—H20 | 119.7 |
C9—C10—H10A | 109.5 | C7—N1—C8 | 122.88 (15) |
C11—C10—H10B | 109.5 | C7—N1—H1 | 118.6 |
C9—C10—H10B | 109.5 | C8—N1—H1 | 118.6 |
H10A—C10—H10B | 108.1 | C14—N2—C11 | 125.27 (14) |
N2—C11—C10 | 110.84 (15) | C14—N2—C12 | 120.41 (15) |
N2—C11—H11A | 109.5 | C11—N2—C12 | 113.62 (14) |
C10—C11—H11A | 109.5 | H1WA—O1W—H1WB | 84 (5) |
N2—C11—H11B | 109.5 | ||
C6—C1—C2—C3 | −1.4 (3) | O2—C14—C15—C16 | 122.3 (2) |
Cl1—C1—C2—C3 | 176.28 (17) | N2—C14—C15—C16 | −57.7 (2) |
C1—C2—C3—C4 | 0.7 (3) | C20—C15—C16—C17 | −0.8 (3) |
C2—C3—C4—C5 | 0.2 (3) | C14—C15—C16—C17 | −176.49 (16) |
C2—C3—C4—C7 | −176.73 (19) | C15—C16—C17—C18 | −0.4 (3) |
C3—C4—C5—C6 | −0.4 (3) | C16—C17—C18—C19 | 1.0 (3) |
C7—C4—C5—C6 | 176.32 (18) | C16—C17—C18—Cl2 | −179.19 (14) |
C2—C1—C6—C5 | 1.2 (3) | C17—C18—C19—C20 | −0.3 (3) |
Cl1—C1—C6—C5 | −176.49 (16) | Cl2—C18—C19—C20 | 179.87 (14) |
C4—C5—C6—C1 | −0.3 (3) | C16—C15—C20—C19 | 1.5 (3) |
C5—C4—C7—O1 | −164.2 (2) | C14—C15—C20—C19 | 177.37 (16) |
C3—C4—C7—O1 | 12.5 (3) | C18—C19—C20—C15 | −1.0 (3) |
C5—C4—C7—N1 | 15.3 (3) | O1—C7—N1—C8 | 5.4 (3) |
C3—C4—C7—N1 | −167.93 (18) | C4—C7—N1—C8 | −174.18 (16) |
N1—C8—C9—C13 | 62.2 (2) | C9—C8—N1—C7 | −104.7 (2) |
N1—C8—C9—C10 | −175.49 (14) | O2—C14—N2—C11 | 166.40 (19) |
C8—C9—C10—C11 | −179.77 (15) | C15—C14—N2—C11 | −13.5 (3) |
C13—C9—C10—C11 | −55.0 (2) | O2—C14—N2—C12 | −3.4 (3) |
C9—C10—C11—N2 | 56.1 (2) | C15—C14—N2—C12 | 176.71 (17) |
N2—C12—C13—C9 | −54.7 (2) | C10—C11—N2—C14 | 132.70 (18) |
C8—C9—C13—C12 | 177.72 (15) | C10—C11—N2—C12 | −56.9 (2) |
C10—C9—C13—C12 | 54.7 (2) | C13—C12—N2—C14 | −133.45 (18) |
O2—C14—C15—C20 | −53.4 (2) | C13—C12—N2—C11 | 55.7 (2) |
N2—C14—C15—C20 | 126.55 (19) |
D—H···A | D—H | H···A | D···A | D—H···A |
N1—H1···O2i | 0.86 | 2.19 | 3.043 (2) | 171 |
O1W—H1WA···O2ii | 0.87 (2) | 2.11 (2) | 2.972 (3) | 169 (4) |
O1W—H1WB···O1 | 0.87 (2) | 1.96 (3) | 2.802 (3) | 163 (7) |
C5—H5···O2i | 0.93 | 2.36 | 3.212 (3) | 152 |
C8—H8B···O1 | 0.97 | 2.43 | 2.789 (3) | 102 |
C12—H12B···O2 | 0.97 | 2.34 | 2.738 (2) | 104 |
Symmetry codes: (i) x+1/2, −y+1/2, z−1/2; (ii) −x+1/2, y−1/2, −z+1/2. |
D—H···A | D—H | H···A | D···A | D—H···A |
N1—H1···O2i | 0.86 | 2.19 | 3.043 (2) | 171 |
O1W—H1WA···O2ii | 0.872 (19) | 2.11 (2) | 2.972 (3) | 169 (4) |
O1W—H1WB···O1 | 0.87 (2) | 1.96 (3) | 2.802 (3) | 163 (7) |
C5—H5···O2i | 0.93 | 2.36 | 3.212 (3) | 152 |
Symmetry codes: (i) x+1/2, −y+1/2, z−1/2; (ii) −x+1/2, y−1/2, −z+1/2. |
Acknowledgements
The authors thank Professor D. Velmurugan of the Centre for Advanced Study in Crystallography and Biophysics, University of Madras, for providing data-collection and computer facilities.
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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 and its derivatives have a high impact factor on the medical field due to their wide range of pharmacological activities. The piperidone molecule is also an important pharmacophore due to its broad-spectrum of biological actions ranging from anti-bacterial to anti-cancer (Parthiban et al., 2005; 2009; 2011). The biological properties of these compounds are highly dependent on the type and location of substituents on the heterocyclic ring. We report in this communication, the synthesis and crystal structure of a new piperidine derivative, the title compound C20H20Cl2N2O2 . H2O.
In the title compound (Fig. 1), the bond lengths in the substituted benzene rings A and B are in good agreement with literature values. The piperidine ring is linked to these phenyl rings through a carbonyl group in a trans orientation. The C—N distances [1.335 (2)–1.464 (2)Å] are in the normal range and are in good agreement those in similar reported structures (Ávila et al., 2010; Prathebha et al., 2014). The bond angles around the N1 and N2 atoms [359.3 (4)° and 360.07 (1)°, respectively], show sp3 hybridization of the atoms. The presence of the carbonyl group linking the A and B rings contracts the bond angles C2—C1—C6 and C20—C15—C16 [118.17 (2) and 119.43 (2) Å, respectively] and expands the bond angles C3—C4—C5 and C17—C18—C19 [121.04 (2) Å and 121.51 (2) Å, respectively]. The bnzene rings A and B form dihedral angles of 53.9 (1)° and 43.7 (1)°, respectively, with the piperidine ring system. The piperidine ring (C13/C14/C15/C16/C17/N1) adopts a chair conformation with puckering parameters of q2 = 0.0184 (2) Å, ϕ2 = 35.47(6.16)°, q3 = 0.5583 (2) Å, QT = 0.5586 (2) Å and θ2 = 1.88 (2)°.
In the crystal, intermolecular water O—H···O hydrogen bonds form chains running along the b axis (Table 1). These chains are in turn linked by N—H···O and C—H···O hydrogen bonds giving a two-dimensional supramolecular layered structure lying parallel to (101) (Fig. 2).