organic compounds
Redetermination of {5-[(7-chloroquinolinium-4-yl)amino]-2-hydroxybenzyl}diethylammonium dichloride dihydrate
aKatholieke Universiteit Leuven, Department of Chemistry, Celestijnenlaan 200F, B-3001 Leuven (Heverlee), Belgium
*Correspondence e-mail: luc.vanmeervelt@chem.kuleuven.be
The structure of the title compound (common name: amodiaquinium dichloride dihydrate), C20H24ClN3O2+·2Cl−·2H2O, was previously determined from powder diffraction data [Llinàs et al. (2006). Acta Cryst. E62, o4196-o4199]. It has now been refined from diffractometer data to a significantly higher precision. The dihedral angle between the quinoline and benzene rings is 54.57 (6)°. The central amino N atom interacts more strongly with the quinoline ring than with the benzene ring, as indicated by the shorter C—N bond length [1.341 (2) Å compared to 1.431 (2) Å]. In the crystal, molecules are packed into a three-dimensional network/supramolecular structure through hydrogen bonds between the amodiaquinium cations, chloride anions and water molecules.
Related literature
Amodiaquine, as a dihydrochloride salt, is often used as a synthetic antimalarial drug against chloroquine-sensitive and chloroquine-resistant strains of Plasmodium falciparum, see: Olliaro & Taylor (2003). For related structures, see: Llinàs et al. (2006); Yennawar & Viswamitra (1991); Semeniuk et al. (2008).
Experimental
Crystal data
|
Refinement
|
Data collection: SMART (Bruker, 1997); cell SAINT (Bruker, 1997); data reduction: SAINT; program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: PLATON (Spek, 2009) and DIAMOND (Brandenburg, 2010); software used to prepare material for publication: PLATON.
Supporting information
https://doi.org/10.1107/S1600536810031806/lx2163sup1.cif
contains datablocks I, global. DOI:Structure factors: contains datablock I. DOI: https://doi.org/10.1107/S1600536810031806/lx2163Isup2.hkl
Amodiaquinium dichloride dihydrate was purchased from Sigma-Aldrich (Belgium). Colourless crystals were obtained at room temperature by slow evaporation from a DMSO solution of (I).
H atoms of the NH groups and of both waters were located in a difference map. The other H atoms were positioned with idealized geometry using a riding model with C–H = 0.95-0.99 Å. All H atoms were refined with isotropic displacement parameters (set to 1.2 or 1.5 times the Ueq of the parent atom).
Amodiaquine, 4-[7-chloro-4-quinolinyl)amino]-2-[(diethylamino)methyl]phenol, is as dihydrochloride salt, often used as synthetic antimalarial drug against chloroquine-sensitive and chloroquine-resistant strains of Plasmodium falciparum (Olliaro & Taylor, 2003). The single-crystal structure of the monohydrate form has been reported by Yennawar & Viswamitra (1991) and by Semeniuk et al. (2008). The room temperature structure of the dihydrate form based on powder diffraction at 1.79 Å resolution has been reported by Llinàs et al. (2006). Here we report the
of the title compound (I) at 100 K and a resolution of 0.84 Å (Fig. 1).Two N atoms (N1 and N3) are protonated indicating that the dihydrochloride salt of amodiaquine is present. The shape of the molecule is mainly dominated by three torsion angles: C8–C9–N2–C19 (τ1 = -7.7 (3)°), C9–N2–C10–C11 (τ2 = -52.8 (2)°) and C11–C12–C16–N3 (τ3 = -85.85 (18)°). It was suggested by Yennawar & Viswamitra (1991) that the C–N bonds linking both aromatic rings have double-bond character. However, we observe a large difference between both bonds C9–N2 (1.341 (2) Å) and N2–C10 (1.431 (2) Å), indicating that N2 interacts more with the quinoline than with the benzene unit. It is also clear from inspection of τ1 and τ2 that the overlap of the lone pair of the sp2-hybridized N2 with the quinoline unit is favoured, and this despite the short H2N···H2 contact distance (2.08 Å). The dihedral angle between the quinoline and benzene units is 54.57 (6)°. An intramolecular close contact between H16A and O1 (2.396 Å) is observed by Llinàs et al. (2006). The r.m.s. deviation when fitting the amodiaquinium units obtained by single-crystal and powder diffraction (Llinàs et al., 2006) is 0.0739 Å. The hydrogen bonds in the crystal packing (Table 1, Fig. 2) are similar to those described by Llinàs et al. (2006).
Amodiaquine, as a dihydrochloride salt, is often used as a synthetic antimalarial drug against chloroquine-sensitive and chloroquine-resistant strains of Plasmodium falciparum, see: Olliaro & Taylor (2003). For related structures, see: Llinàs et al. (2006); Yennawar & Viswamitra (1991); Semeniuk et al. (2008).
Data collection: SMART (Bruker, 1997); cell
SAINT (Bruker, 1997); data reduction: SAINT (Bruker, 1997); program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: PLATON (Spek, 2009) and DIAMOND (Brandenburg, 2010); software used to prepare material for publication: PLATON (Spek, 2009).Fig. 1. The molecular structure of the title compound with the atom numbering scheme. Displacement ellipsoids are drawn at the 50% probability level. H atoms are presented as a small spheres of arbitrary radius. | |
Fig. 2. N–H···Cl, N–H···O, O–H···Cl, and O–H···O hydrogen bonds (dotted lines) in the crystal structure of the title compound. [Symmetry codes : (i) x , - y + 1/2, z - 1/2; (ii) -x - 1, y - 1/2, - z + 1/2; (iii) - x , y -1/2, - z + 1/2.] |
C20H24ClN3O2+·2Cl−·2H2O | F(000) = 976 |
Mr = 464.80 | Dx = 1.384 Mg m−3 |
Monoclinic, P21/c | Cu Kα radiation, λ = 1.54178 Å |
Hall symbol: -P 2ybc | Cell parameters from 6662 reflections |
a = 7.7622 (1) Å | θ = 3.3–70.5° |
b = 26.8709 (4) Å | µ = 3.94 mm−1 |
c = 10.7085 (2) Å | T = 100 K |
β = 92.784 (1)° | Prism, colourless |
V = 2230.91 (6) Å3 | 0.56 × 0.14 × 0.12 mm |
Z = 4 |
Bruker SMART 6000 CCD diffractometer | 3917 independent reflections |
Radiation source: fine-focus sealed tube | 3699 reflections with I > 2σ(I) |
Crossed Göbel mirrors monochromator | Rint = 0.088 |
Detector resolution: 0.92 pixels mm-1 | θmax = 66.6°, θmin = 3.3° |
ω and φ scans | h = −8→9 |
Absorption correction: multi-scan (SADABS; Bruker, 1997) | k = −31→31 |
Tmin = 0.312, Tmax = 0.623 | l = −12→12 |
31612 measured reflections |
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)] = 0.038 | Hydrogen site location: difference Fourier map |
wR(F2) = 0.100 | H atoms treated by a mixture of independent and constrained refinement |
S = 1.10 | w = 1/[σ2(Fo2) + (0.0443P)2 + 1.0601P] where P = (Fo2 + 2Fc2)/3 |
3917 reflections | (Δ/σ)max = 0.001 |
287 parameters | Δρmax = 0.40 e Å−3 |
0 restraints | Δρmin = −0.32 e Å−3 |
C20H24ClN3O2+·2Cl−·2H2O | V = 2230.91 (6) Å3 |
Mr = 464.80 | Z = 4 |
Monoclinic, P21/c | Cu Kα radiation |
a = 7.7622 (1) Å | µ = 3.94 mm−1 |
b = 26.8709 (4) Å | T = 100 K |
c = 10.7085 (2) Å | 0.56 × 0.14 × 0.12 mm |
β = 92.784 (1)° |
Bruker SMART 6000 CCD diffractometer | 3917 independent reflections |
Absorption correction: multi-scan (SADABS; Bruker, 1997) | 3699 reflections with I > 2σ(I) |
Tmin = 0.312, Tmax = 0.623 | Rint = 0.088 |
31612 measured reflections |
R[F2 > 2σ(F2)] = 0.038 | 0 restraints |
wR(F2) = 0.100 | H atoms treated by a mixture of independent and constrained refinement |
S = 1.10 | Δρmax = 0.40 e Å−3 |
3917 reflections | Δρmin = −0.32 e Å−3 |
287 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 | −0.2951 (2) | 0.51757 (6) | 0.06525 (16) | 0.0118 (3) | |
C2 | −0.2063 (2) | 0.52058 (6) | −0.04673 (16) | 0.0131 (4) | |
H2 | −0.1539 | 0.4915 | −0.0782 | 0.016* | |
C3 | −0.1939 (2) | 0.56445 (7) | −0.11087 (16) | 0.0140 (4) | |
H3 | −0.1362 | 0.5658 | −0.1870 | 0.017* | |
C4 | −0.2681 (2) | 0.60736 (7) | −0.06187 (17) | 0.0147 (4) | |
C5 | −0.3573 (2) | 0.60667 (6) | 0.04469 (17) | 0.0141 (4) | |
H5 | −0.4080 | 0.6362 | 0.0753 | 0.017* | |
C6 | −0.3724 (2) | 0.56123 (6) | 0.10810 (16) | 0.0118 (3) | |
C7 | −0.4831 (2) | 0.51792 (7) | 0.27924 (16) | 0.0141 (4) | |
H7 | −0.5498 | 0.5183 | 0.3513 | 0.017* | |
C8 | −0.4081 (2) | 0.47445 (6) | 0.24440 (16) | 0.0138 (4) | |
H8 | −0.4226 | 0.4453 | 0.2928 | 0.017* | |
C9 | −0.3097 (2) | 0.47234 (6) | 0.13779 (16) | 0.0118 (3) | |
C10 | −0.2219 (2) | 0.38571 (6) | 0.17370 (16) | 0.0127 (4) | |
C11 | −0.1590 (2) | 0.38657 (6) | 0.29763 (16) | 0.0125 (4) | |
H11 | −0.1216 | 0.4171 | 0.3343 | 0.015* | |
C12 | −0.1502 (2) | 0.34316 (6) | 0.36829 (16) | 0.0115 (3) | |
C13 | −0.2084 (2) | 0.29835 (6) | 0.31382 (17) | 0.0121 (3) | |
C14 | −0.2641 (2) | 0.29733 (6) | 0.18823 (17) | 0.0139 (4) | |
H14 | −0.2977 | 0.2667 | 0.1501 | 0.017* | |
C15 | −0.2709 (2) | 0.34090 (7) | 0.11850 (17) | 0.0140 (4) | |
H15 | −0.3091 | 0.3400 | 0.0329 | 0.017* | |
C16 | −0.0831 (2) | 0.34431 (6) | 0.50266 (16) | 0.0133 (4) | |
H16A | −0.1354 | 0.3166 | 0.5485 | 0.016* | |
H16B | −0.1191 | 0.3759 | 0.5414 | 0.016* | |
C17 | 0.1735 (2) | 0.34491 (6) | 0.65140 (16) | 0.0136 (4) | |
H17A | 0.1177 | 0.3744 | 0.6876 | 0.016* | |
H17B | 0.2995 | 0.3509 | 0.6553 | 0.016* | |
C18 | 0.1364 (3) | 0.29984 (7) | 0.73055 (17) | 0.0206 (4) | |
H18A | 0.0146 | 0.2906 | 0.7179 | 0.031* | |
H18B | 0.1614 | 0.3077 | 0.8189 | 0.031* | |
H18C | 0.2090 | 0.2720 | 0.7061 | 0.031* | |
C19 | 0.1800 (2) | 0.29476 (7) | 0.45331 (16) | 0.0145 (4) | |
H19A | 0.1337 | 0.2938 | 0.3655 | 0.017* | |
H19B | 0.1390 | 0.2646 | 0.4960 | 0.017* | |
C20 | 0.3754 (3) | 0.29404 (8) | 0.45504 (19) | 0.0242 (4) | |
H20A | 0.4172 | 0.3254 | 0.4210 | 0.036* | |
H20B | 0.4137 | 0.2662 | 0.4040 | 0.036* | |
H20C | 0.4217 | 0.2900 | 0.5412 | 0.036* | |
N1 | −0.4650 (2) | 0.56009 (6) | 0.21445 (14) | 0.0137 (3) | |
H1N | −0.514 (3) | 0.5883 (9) | 0.237 (2) | 0.016* | |
N2 | −0.2317 (2) | 0.43058 (5) | 0.10177 (14) | 0.0126 (3) | |
H2N | −0.190 (3) | 0.4290 (8) | 0.032 (2) | 0.015* | |
N3 | 0.1117 (2) | 0.33997 (5) | 0.51605 (14) | 0.0114 (3) | |
H3N | 0.152 (3) | 0.3658 (9) | 0.482 (2) | 0.015 (5)* | |
O1 | −0.20278 (17) | 0.25706 (4) | 0.38692 (12) | 0.0160 (3) | |
H1O | −0.2483 | 0.2331 | 0.3472 | 0.024* | |
O1W | −0.0091 (2) | 0.02817 (6) | 0.17421 (15) | 0.0321 (4) | |
H1WA | −0.080 (4) | 0.0063 (12) | 0.139 (3) | 0.038* | |
H1WB | 0.063 (4) | 0.0345 (11) | 0.126 (3) | 0.038* | |
O2W | −0.08987 (19) | 0.09265 (5) | 0.36517 (13) | 0.0201 (3) | |
H2WA | −0.073 (3) | 0.0731 (10) | 0.307 (3) | 0.024* | |
H2WB | −0.157 (4) | 0.1146 (10) | 0.337 (2) | 0.024* | |
Cl1 | −0.24427 (7) | 0.663720 (16) | −0.13878 (5) | 0.02505 (15) | |
Cl2 | −0.63123 (6) | 0.667531 (14) | 0.24913 (4) | 0.01525 (13) | |
Cl3 | 0.24523 (6) | 0.444735 (15) | 0.45660 (4) | 0.02012 (14) |
U11 | U22 | U33 | U12 | U13 | U23 | |
C1 | 0.0116 (8) | 0.0129 (8) | 0.0105 (8) | −0.0019 (7) | −0.0021 (7) | 0.0008 (6) |
C2 | 0.0133 (8) | 0.0126 (8) | 0.0134 (8) | −0.0003 (7) | 0.0005 (7) | −0.0025 (6) |
C3 | 0.0148 (9) | 0.0163 (8) | 0.0110 (8) | −0.0015 (7) | 0.0004 (7) | 0.0011 (7) |
C4 | 0.0153 (9) | 0.0129 (8) | 0.0156 (8) | −0.0009 (7) | −0.0013 (7) | 0.0041 (7) |
C5 | 0.0144 (9) | 0.0110 (8) | 0.0168 (8) | 0.0017 (7) | 0.0000 (7) | −0.0009 (7) |
C6 | 0.0100 (8) | 0.0141 (8) | 0.0110 (8) | −0.0001 (6) | −0.0012 (7) | −0.0003 (6) |
C7 | 0.0133 (8) | 0.0174 (9) | 0.0117 (8) | −0.0014 (7) | 0.0017 (7) | 0.0012 (7) |
C8 | 0.0144 (8) | 0.0135 (8) | 0.0135 (8) | −0.0013 (7) | 0.0002 (7) | 0.0023 (6) |
C9 | 0.0109 (8) | 0.0127 (8) | 0.0115 (8) | −0.0005 (6) | −0.0038 (7) | 0.0002 (6) |
C10 | 0.0128 (8) | 0.0119 (8) | 0.0134 (8) | 0.0025 (7) | 0.0013 (7) | 0.0018 (6) |
C11 | 0.0128 (8) | 0.0093 (8) | 0.0153 (8) | 0.0010 (6) | 0.0014 (7) | −0.0012 (6) |
C12 | 0.0104 (8) | 0.0134 (8) | 0.0108 (8) | 0.0020 (6) | 0.0024 (7) | 0.0006 (6) |
C13 | 0.0098 (8) | 0.0106 (8) | 0.0159 (9) | 0.0018 (6) | 0.0015 (7) | 0.0030 (6) |
C14 | 0.0154 (9) | 0.0106 (8) | 0.0154 (9) | −0.0005 (6) | −0.0014 (7) | −0.0011 (6) |
C15 | 0.0145 (9) | 0.0152 (9) | 0.0120 (8) | 0.0023 (7) | −0.0018 (7) | 0.0001 (6) |
C16 | 0.0127 (9) | 0.0154 (8) | 0.0119 (8) | 0.0008 (7) | 0.0014 (7) | −0.0010 (6) |
C17 | 0.0160 (9) | 0.0158 (8) | 0.0087 (8) | −0.0004 (7) | −0.0016 (7) | −0.0013 (6) |
C18 | 0.0265 (10) | 0.0228 (10) | 0.0123 (8) | −0.0023 (8) | −0.0021 (8) | 0.0032 (7) |
C19 | 0.0168 (9) | 0.0153 (8) | 0.0113 (8) | 0.0019 (7) | −0.0004 (7) | −0.0029 (6) |
C20 | 0.0173 (10) | 0.0341 (11) | 0.0210 (10) | 0.0059 (8) | −0.0007 (8) | −0.0101 (8) |
N1 | 0.0149 (8) | 0.0124 (7) | 0.0140 (7) | 0.0027 (6) | 0.0025 (6) | −0.0007 (6) |
N2 | 0.0169 (8) | 0.0113 (7) | 0.0098 (7) | 0.0003 (6) | 0.0021 (6) | 0.0013 (5) |
N3 | 0.0137 (8) | 0.0113 (7) | 0.0093 (7) | −0.0015 (6) | 0.0004 (6) | 0.0019 (6) |
O1 | 0.0223 (7) | 0.0093 (6) | 0.0163 (6) | −0.0028 (5) | −0.0011 (5) | 0.0030 (5) |
O1W | 0.0378 (9) | 0.0334 (9) | 0.0259 (8) | −0.0084 (7) | 0.0113 (7) | −0.0119 (7) |
O2W | 0.0264 (8) | 0.0181 (7) | 0.0161 (6) | 0.0032 (6) | 0.0033 (6) | 0.0022 (5) |
Cl1 | 0.0353 (3) | 0.0141 (2) | 0.0266 (3) | 0.00221 (18) | 0.0109 (2) | 0.00951 (17) |
Cl2 | 0.0173 (2) | 0.0126 (2) | 0.0157 (2) | 0.00398 (15) | −0.00045 (17) | −0.00229 (14) |
Cl3 | 0.0266 (3) | 0.0168 (2) | 0.0171 (2) | −0.00626 (17) | 0.00212 (19) | 0.00298 (15) |
C1—C6 | 1.405 (2) | C14—H14 | 0.9500 |
C1—C2 | 1.414 (3) | C15—H15 | 0.9500 |
C1—C9 | 1.450 (2) | C16—N3 | 1.516 (2) |
C2—C3 | 1.370 (3) | C16—H16A | 0.9900 |
C2—H2 | 0.9500 | C16—H16B | 0.9900 |
C3—C4 | 1.402 (3) | C17—N3 | 1.510 (2) |
C3—H3 | 0.9500 | C17—C18 | 1.514 (2) |
C4—C5 | 1.364 (3) | C17—H17A | 0.9900 |
C4—Cl1 | 1.7381 (17) | C17—H17B | 0.9900 |
C5—C6 | 1.405 (2) | C18—H18A | 0.9800 |
C5—H5 | 0.9500 | C18—H18B | 0.9800 |
C6—N1 | 1.376 (2) | C18—H18C | 0.9800 |
C7—N1 | 1.340 (2) | C19—N3 | 1.497 (2) |
C7—C8 | 1.365 (3) | C19—C20 | 1.516 (3) |
C7—H7 | 0.9500 | C19—H19A | 0.9900 |
C8—C9 | 1.405 (3) | C19—H19B | 0.9900 |
C8—H8 | 0.9500 | C20—H20A | 0.9800 |
C9—N2 | 1.340 (2) | C20—H20B | 0.9800 |
C10—C15 | 1.386 (3) | C20—H20C | 0.9800 |
C10—C11 | 1.392 (3) | N1—H1N | 0.89 (2) |
C10—N2 | 1.431 (2) | N2—H2N | 0.83 (3) |
C11—C12 | 1.390 (2) | N3—H3N | 0.85 (3) |
C11—H11 | 0.9500 | O1—H1O | 0.8400 |
C12—C13 | 1.403 (2) | O1W—H1WA | 0.88 (3) |
C12—C16 | 1.507 (2) | O1W—H1WB | 0.80 (3) |
C13—O1 | 1.357 (2) | O2W—H2WA | 0.83 (3) |
C13—C14 | 1.393 (3) | O2W—H2WB | 0.84 (3) |
C14—C15 | 1.388 (3) | ||
C6—C1—C2 | 117.57 (16) | C12—C16—N3 | 112.69 (14) |
C6—C1—C9 | 118.64 (16) | C12—C16—H16A | 109.1 |
C2—C1—C9 | 123.79 (16) | N3—C16—H16A | 109.1 |
C3—C2—C1 | 121.54 (16) | C12—C16—H16B | 109.1 |
C3—C2—H2 | 119.2 | N3—C16—H16B | 109.1 |
C1—C2—H2 | 119.2 | H16A—C16—H16B | 107.8 |
C2—C3—C4 | 118.68 (16) | N3—C17—C18 | 114.01 (14) |
C2—C3—H3 | 120.7 | N3—C17—H17A | 108.8 |
C4—C3—H3 | 120.7 | C18—C17—H17A | 108.8 |
C5—C4—C3 | 122.46 (16) | N3—C17—H17B | 108.8 |
C5—C4—Cl1 | 118.58 (14) | C18—C17—H17B | 108.8 |
C3—C4—Cl1 | 118.96 (14) | H17A—C17—H17B | 107.6 |
C4—C5—C6 | 118.29 (16) | C17—C18—H18A | 109.5 |
C4—C5—H5 | 120.9 | C17—C18—H18B | 109.5 |
C6—C5—H5 | 120.9 | H18A—C18—H18B | 109.5 |
N1—C6—C1 | 120.02 (16) | C17—C18—H18C | 109.5 |
N1—C6—C5 | 118.59 (16) | H18A—C18—H18C | 109.5 |
C1—C6—C5 | 121.40 (16) | H18B—C18—H18C | 109.5 |
N1—C7—C8 | 121.68 (16) | N3—C19—C20 | 112.36 (15) |
N1—C7—H7 | 119.2 | N3—C19—H19A | 109.1 |
C8—C7—H7 | 119.2 | C20—C19—H19A | 109.1 |
C7—C8—C9 | 120.83 (16) | N3—C19—H19B | 109.1 |
C7—C8—H8 | 119.6 | C20—C19—H19B | 109.1 |
C9—C8—H8 | 119.6 | H19A—C19—H19B | 107.9 |
N2—C9—C8 | 122.57 (16) | C19—C20—H20A | 109.5 |
N2—C9—C1 | 119.97 (16) | C19—C20—H20B | 109.5 |
C8—C9—C1 | 117.46 (16) | H20A—C20—H20B | 109.5 |
C15—C10—C11 | 119.80 (16) | C19—C20—H20C | 109.5 |
C15—C10—N2 | 119.74 (15) | H20A—C20—H20C | 109.5 |
C11—C10—N2 | 120.43 (15) | H20B—C20—H20C | 109.5 |
C12—C11—C10 | 120.72 (16) | C7—N1—C6 | 121.31 (15) |
C12—C11—H11 | 119.6 | C7—N1—H1N | 121.8 (14) |
C10—C11—H11 | 119.6 | C6—N1—H1N | 116.8 (14) |
C11—C12—C13 | 119.18 (16) | C9—N2—C10 | 124.30 (16) |
C11—C12—C16 | 120.54 (16) | C9—N2—H2N | 120.2 (15) |
C13—C12—C16 | 120.26 (15) | C10—N2—H2N | 115.4 (15) |
O1—C13—C14 | 122.72 (15) | C19—N3—C17 | 113.52 (13) |
O1—C13—C12 | 117.46 (16) | C19—N3—C16 | 113.13 (14) |
C14—C13—C12 | 119.79 (16) | C17—N3—C16 | 110.65 (14) |
C15—C14—C13 | 120.30 (16) | C19—N3—H3N | 108.9 (15) |
C15—C14—H14 | 119.8 | C17—N3—H3N | 103.8 (15) |
C13—C14—H14 | 119.8 | C16—N3—H3N | 106.1 (15) |
C10—C15—C14 | 120.05 (16) | C13—O1—H1O | 109.5 |
C10—C15—H15 | 120.0 | H1WA—O1W—H1WB | 108 (3) |
C14—C15—H15 | 120.0 | H2WA—O2W—H2WB | 107 (2) |
C6—C1—C2—C3 | 0.7 (3) | C11—C12—C13—O1 | −177.99 (16) |
C9—C1—C2—C3 | −178.97 (16) | C16—C12—C13—O1 | 0.6 (2) |
C1—C2—C3—C4 | 1.5 (3) | C11—C12—C13—C14 | 3.8 (3) |
C2—C3—C4—C5 | −2.5 (3) | C16—C12—C13—C14 | −177.60 (16) |
C2—C3—C4—Cl1 | 177.02 (14) | O1—C13—C14—C15 | 178.55 (16) |
C3—C4—C5—C6 | 1.1 (3) | C12—C13—C14—C15 | −3.4 (3) |
Cl1—C4—C5—C6 | −178.43 (13) | C11—C10—C15—C14 | 2.8 (3) |
C2—C1—C6—N1 | 178.00 (16) | N2—C10—C15—C14 | −179.04 (17) |
C9—C1—C6—N1 | −2.3 (2) | C13—C14—C15—C10 | 0.1 (3) |
C2—C1—C6—C5 | −2.1 (3) | C11—C12—C16—N3 | −85.8 (2) |
C9—C1—C6—C5 | 177.54 (16) | C13—C12—C16—N3 | 95.62 (19) |
C4—C5—C6—N1 | −178.85 (16) | C8—C7—N1—C6 | 1.3 (3) |
C4—C5—C6—C1 | 1.3 (3) | C1—C6—N1—C7 | 0.2 (3) |
N1—C7—C8—C9 | −0.6 (3) | C5—C6—N1—C7 | −179.66 (16) |
C7—C8—C9—N2 | 178.87 (17) | C8—C9—N2—C10 | −7.7 (3) |
C7—C8—C9—C1 | −1.6 (3) | C1—C9—N2—C10 | 172.72 (15) |
C6—C1—C9—N2 | −177.47 (16) | C15—C10—N2—C9 | 129.05 (19) |
C2—C1—C9—N2 | 2.2 (3) | C11—C10—N2—C9 | −52.8 (3) |
C6—C1—C9—C8 | 2.9 (2) | C20—C19—N3—C17 | −59.3 (2) |
C2—C1—C9—C8 | −177.40 (17) | C20—C19—N3—C16 | 173.55 (15) |
C15—C10—C11—C12 | −2.3 (3) | C18—C17—N3—C19 | −55.1 (2) |
N2—C10—C11—C12 | 179.55 (16) | C18—C17—N3—C16 | 73.33 (19) |
C10—C11—C12—C13 | −1.0 (3) | C12—C16—N3—C19 | −55.29 (19) |
C10—C11—C12—C16 | −179.61 (16) | C12—C16—N3—C17 | 176.05 (14) |
D—H···A | D—H | H···A | D···A | D—H···A |
N1—H1N···Cl2 | 0.89 (2) | 2.32 (2) | 3.1913 (16) | 166.8 (19) |
N2—H2N···O2Wi | 0.83 (2) | 2.07 (2) | 2.880 (2) | 167 (2) |
N3—H3N···Cl3 | 0.85 (2) | 2.26 (2) | 3.0771 (14) | 161 (2) |
O1—H1O···Cl2ii | 0.84 | 2.22 | 3.0640 (12) | 177 |
O1W—H1WA···Cl3iii | 0.88 (3) | 2.30 (3) | 3.1778 (16) | 175 (3) |
O1W—H1WB···Cl3i | 0.80 (3) | 2.42 (3) | 3.2100 (16) | 171 (3) |
O2W—H2WA···O1W | 0.83 (3) | 1.95 (3) | 2.775 (2) | 174 (2) |
O2W—H2WB···Cl2ii | 0.83 (3) | 2.33 (3) | 3.1585 (15) | 173 (3) |
Symmetry codes: (i) x, −y+1/2, z−1/2; (ii) −x−1, y−1/2, −z+1/2; (iii) −x, y−1/2, −z+1/2. |
Experimental details
Crystal data | |
Chemical formula | C20H24ClN3O2+·2Cl−·2H2O |
Mr | 464.80 |
Crystal system, space group | Monoclinic, P21/c |
Temperature (K) | 100 |
a, b, c (Å) | 7.7622 (1), 26.8709 (4), 10.7085 (2) |
β (°) | 92.784 (1) |
V (Å3) | 2230.91 (6) |
Z | 4 |
Radiation type | Cu Kα |
µ (mm−1) | 3.94 |
Crystal size (mm) | 0.56 × 0.14 × 0.12 |
Data collection | |
Diffractometer | Bruker SMART 6000 CCD |
Absorption correction | Multi-scan (SADABS; Bruker, 1997) |
Tmin, Tmax | 0.312, 0.623 |
No. of measured, independent and observed [I > 2σ(I)] reflections | 31612, 3917, 3699 |
Rint | 0.088 |
(sin θ/λ)max (Å−1) | 0.595 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.038, 0.100, 1.10 |
No. of reflections | 3917 |
No. of parameters | 287 |
H-atom treatment | H atoms treated by a mixture of independent and constrained refinement |
Δρmax, Δρmin (e Å−3) | 0.40, −0.32 |
Computer programs: SMART (Bruker, 1997), SAINT (Bruker, 1997), SHELXS97 (Sheldrick, 2008), SHELXL97 (Sheldrick, 2008), PLATON (Spek, 2009) and DIAMOND (Brandenburg, 2010), PLATON (Spek, 2009).
D—H···A | D—H | H···A | D···A | D—H···A |
N1—H1N···Cl2 | 0.89 (2) | 2.32 (2) | 3.1913 (16) | 166.8 (19) |
N2—H2N···O2Wi | 0.83 (2) | 2.07 (2) | 2.880 (2) | 167 (2) |
N3—H3N···Cl3 | 0.85 (2) | 2.26 (2) | 3.0771 (14) | 161 (2) |
O1—H1O···Cl2ii | 0.84 | 2.22 | 3.0640 (12) | 177 |
O1W—H1WA···Cl3iii | 0.88 (3) | 2.30 (3) | 3.1778 (16) | 175 (3) |
O1W—H1WB···Cl3i | 0.80 (3) | 2.42 (3) | 3.2100 (16) | 171 (3) |
O2W—H2WA···O1W | 0.83 (3) | 1.95 (3) | 2.775 (2) | 174 (2) |
O2W—H2WB···Cl2ii | 0.83 (3) | 2.33 (3) | 3.1585 (15) | 173 (3) |
Symmetry codes: (i) x, −y+1/2, z−1/2; (ii) −x−1, y−1/2, −z+1/2; (iii) −x, y−1/2, −z+1/2. |
References
Brandenburg, K. (2010). DIAMOND. Crystal Impact GbR, Bonn, Germany. Google Scholar
Bruker (1997). SMART, SAINT and SADABS. Bruker AXS Inc., Madison, Wisconsin, USA. Google Scholar
Llinàs, A., Fábián, L., Burley, J. C., van de Streek, J. & Goodman, J. M. (2006). Acta Cryst. E62, o4196–o4199. Web of Science CSD CrossRef IUCr Journals Google Scholar
Olliaro, P. L. & Taylor, W. R. J. (2003). J. Exp. Biol. 206, 3753–3759. Web of Science CrossRef PubMed CAS Google Scholar
Semeniuk, A., Niedospial, A., Kalinowska-Tluscik, J., Nitek, W. & Oleksyn, B. J. (2008). J. Mol. Struct. 875, 32–41. Web of Science CSD CrossRef CAS Google Scholar
Sheldrick, G. M. (2008). Acta Cryst. A64, 112–122. Web of Science CrossRef CAS IUCr Journals Google Scholar
Spek, A. L. (2009). Acta Cryst. D65, 148–155. Web of Science CrossRef CAS IUCr Journals Google Scholar
Yennawar, H. P. & Viswamitra, M. A. (1991). Curr. Sci. 61, 39–43. CAS Google Scholar
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.
Amodiaquine, 4-[7-chloro-4-quinolinyl)amino]-2-[(diethylamino)methyl]phenol, is as dihydrochloride salt, often used as synthetic antimalarial drug against chloroquine-sensitive and chloroquine-resistant strains of Plasmodium falciparum (Olliaro & Taylor, 2003). The single-crystal structure of the monohydrate form has been reported by Yennawar & Viswamitra (1991) and by Semeniuk et al. (2008). The room temperature structure of the dihydrate form based on powder diffraction at 1.79 Å resolution has been reported by Llinàs et al. (2006). Here we report the crystal structure of the title compound (I) at 100 K and a resolution of 0.84 Å (Fig. 1).
Two N atoms (N1 and N3) are protonated indicating that the dihydrochloride salt of amodiaquine is present. The shape of the molecule is mainly dominated by three torsion angles: C8–C9–N2–C19 (τ1 = -7.7 (3)°), C9–N2–C10–C11 (τ2 = -52.8 (2)°) and C11–C12–C16–N3 (τ3 = -85.85 (18)°). It was suggested by Yennawar & Viswamitra (1991) that the C–N bonds linking both aromatic rings have double-bond character. However, we observe a large difference between both bonds C9–N2 (1.341 (2) Å) and N2–C10 (1.431 (2) Å), indicating that N2 interacts more with the quinoline than with the benzene unit. It is also clear from inspection of τ1 and τ2 that the overlap of the lone pair of the sp2-hybridized N2 with the quinoline unit is favoured, and this despite the short H2N···H2 contact distance (2.08 Å). The dihedral angle between the quinoline and benzene units is 54.57 (6)°. An intramolecular close contact between H16A and O1 (2.396 Å) is observed by Llinàs et al. (2006). The r.m.s. deviation when fitting the amodiaquinium units obtained by single-crystal and powder diffraction (Llinàs et al., 2006) is 0.0739 Å. The hydrogen bonds in the crystal packing (Table 1, Fig. 2) are similar to those described by Llinàs et al. (2006).