organic compounds
Flunarizinium isonicotinate
aDepartment of Studies in Chemistry, University of Mysore, Manasagangotri, Mysore 570 006, India, and bDepartment of Chemistry, Keene State College, 229 Main Street, Keene, NH 03435-2001, USA
*Correspondence e-mail: jjasinski@keene.edu
In the cation of the title salt {systematic name: 4-[bis(4-fluorophenyl)methyl]-1-[(2E)-3-phenylprop-2-en-1-yl]piperazin-1-ium pyridine-4-carboxylate}, C26H27F2N2+·C6H4NO2−, the piperazine ring is in a slightly distorted chair conformation. The dihedral angle between the mean planes of the fluoro-substituted benzene rings is 81.9 (1)° and these benzene rings form dihedral angles of 6.5 (1) and 87.8 (1)° with the phenyl ring. In the crystal, a single N—H⋯O hydrogen bond links the cation and the anion. In addition, weak C—H⋯O hydrogen bonds and π–π stacking interactions involving one of the fluoro-substituted benzene rings and the phenyl ring, with a centroid–centroid distance of 3.700 (7) Å, link molecules along [100].
CCDC reference: 1001665
Related literature
For the bioligical activities of flunarizine, see: Amery (1983); Holmes et al. (1984). For related structures, see: Kavitha et al. (2013a,b,c,d). For puckering parameters, see Cremer & Pople (1975). For standard bond lengths, see: Allen et al. (1987).
Experimental
Crystal data
|
|
Data collection: CrysAlis PRO (Agilent, 2012); cell CrysAlis PRO; data reduction: CrysAlis RED (Agilent, 2012); program(s) used to solve structure: SUPERFLIP (Palatinus & Chapuis, 2007); program(s) used to refine structure: SHELXL2012 (Sheldrick, 2008); molecular graphics: OLEX2 (Dolomanov et al., 2009) and PLATON (Spek, 2009); software used to prepare material for publication: OLEX2.
Supporting information
CCDC reference: 1001665
10.1107/S1600536814010423/lh5702sup1.cif
contains datablock I. DOI:Structure factors: contains datablock I. DOI: 10.1107/S1600536814010423/lh5702Isup2.hkl
Supporting information file. DOI: 10.1107/S1600536814010423/lh5702Isup3.cml
Flunarizine (2.025 g, 0.01 mol) and isonicotinic acid (0.61 g, 0.005 mol) were dissolved in hot dimethylformamide solution and stirred over a magnetic stirrer for 10 minutes. The resulting solution was allowed to cool slowly at room temperature. The crystals of the title compound appeared after a few days and were subsequently used for x-ray studies.
Atom H2A was refined isotropically and the remaining H atoms were placed in calculated positions and then refined using a riding-model approximation with C—H = 0.93Å or 0.98Å(CH) or 0.97Å (CH2). Isotropic displacement parameters for these atoms were set to 1.2 (CH, CH2) times Ueq of the parent atom.
Data collection: CrysAlis PRO (Agilent, 2012); cell
CrysAlis PRO (Agilent, 2012); data reduction: CrysAlis RED (Agilent, 2012); program(s) used to solve structure: SUPERFLIP (Palatinus & Chapuis, 2007); program(s) used to refine structure: SHELXL2012 (Sheldrick, 2008); molecular graphics: OLEX2 (Dolomanov et al., 2009) and PLATON (Spek, 2009); software used to prepare material for publication: OLEX2 (Dolomanov et al., 2009).C26H27F2N2+·C6H4NO2− | F(000) = 556 |
Mr = 527.60 | Dx = 1.321 Mg m−3 |
Monoclinic, Pc | Cu Kα radiation, λ = 1.54184 Å |
a = 11.0023 (3) Å | Cell parameters from 4115 reflections |
b = 10.6435 (3) Å | θ = 4.0–71.5° |
c = 11.3393 (3) Å | µ = 0.76 mm−1 |
β = 92.481 (3)° | T = 173 K |
V = 1326.63 (6) Å3 | Block, colourless |
Z = 2 | 0.22 × 0.12 × 0.06 mm |
Agilent Eos Gemini diffractometer | 3403 independent reflections |
Radiation source: Enhance (Cu) X-ray Source | 3238 reflections with I > 2σ(I) |
Detector resolution: 16.0416 pixels mm-1 | Rint = 0.042 |
ω scans | θmax = 71.3°, θmin = 4.0° |
Absorption correction: multi-scan (CrysAlis PRO and CrysAlis RED; Agilent, 2012) | h = −13→7 |
Tmin = 0.781, Tmax = 1.000 | k = −12→13 |
8232 measured reflections | l = −13→13 |
Refinement on F2 | H atoms treated by a mixture of independent and constrained refinement |
Least-squares matrix: full | w = 1/[σ2(Fo2) + (0.0764P)2 + 0.0707P] where P = (Fo2 + 2Fc2)/3 |
R[F2 > 2σ(F2)] = 0.040 | (Δ/σ)max < 0.001 |
wR(F2) = 0.110 | Δρmax = 0.18 e Å−3 |
S = 1.02 | Δρmin = −0.20 e Å−3 |
3403 reflections | Extinction correction: SHELXL2012 (Sheldrick, 2008), Fc*=kFc[1+0.001xFc2λ3/sin(2θ)]-1/4 |
357 parameters | Extinction coefficient: 0.0050 (8) |
2 restraints | Absolute structure: Classical Flack method preferred over Parsons because s.u. lower. 857 Friedel pairs |
Primary atom site location: structure-invariant direct methods | Absolute structure parameter: 0.2 (2) |
Hydrogen site location: mixed |
C26H27F2N2+·C6H4NO2− | V = 1326.63 (6) Å3 |
Mr = 527.60 | Z = 2 |
Monoclinic, Pc | Cu Kα radiation |
a = 11.0023 (3) Å | µ = 0.76 mm−1 |
b = 10.6435 (3) Å | T = 173 K |
c = 11.3393 (3) Å | 0.22 × 0.12 × 0.06 mm |
β = 92.481 (3)° |
Agilent Eos Gemini diffractometer | 3403 independent reflections |
Absorption correction: multi-scan (CrysAlis PRO and CrysAlis RED; Agilent, 2012) | 3238 reflections with I > 2σ(I) |
Tmin = 0.781, Tmax = 1.000 | Rint = 0.042 |
8232 measured reflections |
R[F2 > 2σ(F2)] = 0.040 | H atoms treated by a mixture of independent and constrained refinement |
wR(F2) = 0.110 | Δρmax = 0.18 e Å−3 |
S = 1.02 | Δρmin = −0.20 e Å−3 |
3403 reflections | Absolute structure: Classical Flack method preferred over Parsons because s.u. lower. 857 Friedel pairs |
357 parameters | Absolute structure parameter: 0.2 (2) |
2 restraints |
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. |
x | y | z | Uiso*/Ueq | ||
F1A | −0.1154 (2) | 1.19666 (19) | 0.98648 (18) | 0.0538 (5) | |
F2A | 0.0248 (2) | 1.5040 (2) | 0.2592 (2) | 0.0696 (7) | |
N1A | 0.2572 (2) | 1.0742 (2) | 0.58937 (19) | 0.0263 (5) | |
N2A | 0.4826 (2) | 0.9352 (2) | 0.5718 (2) | 0.0272 (5) | |
H2A | 0.461 (4) | 0.877 (4) | 0.513 (4) | 0.048 (10)* | |
C1A | 0.1259 (2) | 1.0983 (2) | 0.5668 (2) | 0.0270 (5) | |
H1A | 0.0897 | 1.0231 | 0.5298 | 0.032* | |
C2A | 0.0641 (2) | 1.1206 (2) | 0.6827 (2) | 0.0271 (5) | |
C3A | 0.1256 (3) | 1.1748 (2) | 0.7798 (2) | 0.0291 (5) | |
H3A | 0.2080 | 1.1932 | 0.7763 | 0.035* | |
C4A | 0.0650 (3) | 1.2017 (2) | 0.8823 (3) | 0.0336 (6) | |
H4A | 0.1062 | 1.2378 | 0.9472 | 0.040* | |
C5A | −0.0561 (3) | 1.1741 (3) | 0.8856 (3) | 0.0362 (6) | |
C6A | −0.1212 (3) | 1.1206 (3) | 0.7915 (3) | 0.0375 (7) | |
H6A | −0.2037 | 1.1033 | 0.7959 | 0.045* | |
C7A | −0.0596 (3) | 1.0937 (3) | 0.6905 (3) | 0.0323 (6) | |
H7A | −0.1016 | 1.0569 | 0.6264 | 0.039* | |
C8A | 0.1019 (2) | 1.2089 (2) | 0.4835 (2) | 0.0286 (5) | |
C9A | 0.0496 (3) | 1.1870 (3) | 0.3720 (3) | 0.0350 (6) | |
H9A | 0.0320 | 1.1052 | 0.3482 | 0.042* | |
C10A | 0.0231 (3) | 1.2866 (4) | 0.2952 (3) | 0.0441 (8) | |
H10A | −0.0122 | 1.2723 | 0.2204 | 0.053* | |
C11A | 0.0504 (3) | 1.4057 (3) | 0.3327 (3) | 0.0460 (8) | |
C12A | 0.1034 (3) | 1.4311 (3) | 0.4423 (3) | 0.0454 (8) | |
H12A | 0.1216 | 1.5132 | 0.4649 | 0.054* | |
C13A | 0.1292 (3) | 1.3318 (3) | 0.5183 (3) | 0.0366 (6) | |
H13A | 0.1649 | 1.3471 | 0.5927 | 0.044* | |
C14A | 0.3274 (2) | 1.0792 (3) | 0.4828 (2) | 0.0301 (6) | |
H14A | 0.3156 | 1.1601 | 0.4446 | 0.036* | |
H14B | 0.2991 | 1.0145 | 0.4281 | 0.036* | |
C15A | 0.4611 (3) | 1.0600 (3) | 0.5144 (2) | 0.0297 (6) | |
H15A | 0.5070 | 1.0650 | 0.4434 | 0.036* | |
H15B | 0.4895 | 1.1261 | 0.5676 | 0.036* | |
C16A | 0.4061 (2) | 0.9246 (2) | 0.6769 (2) | 0.0280 (5) | |
H16A | 0.4332 | 0.9853 | 0.7362 | 0.034* | |
H16B | 0.4148 | 0.8413 | 0.7108 | 0.034* | |
C17A | 0.2741 (3) | 0.9485 (2) | 0.6415 (2) | 0.0286 (5) | |
H17A | 0.2463 | 0.8855 | 0.5847 | 0.034* | |
H17B | 0.2253 | 0.9412 | 0.7104 | 0.034* | |
C18A | 0.6153 (3) | 0.9189 (3) | 0.6037 (3) | 0.0338 (6) | |
H18A | 0.6603 | 0.9180 | 0.5321 | 0.041* | |
H18B | 0.6435 | 0.9900 | 0.6508 | 0.041* | |
C19A | 0.6416 (3) | 0.8002 (3) | 0.6713 (3) | 0.0328 (6) | |
H19A | 0.6247 | 0.7235 | 0.6349 | 0.039* | |
C20A | 0.6877 (3) | 0.8008 (3) | 0.7806 (3) | 0.0324 (6) | |
H20A | 0.7019 | 0.8796 | 0.8139 | 0.039* | |
C21A | 0.7198 (2) | 0.6926 (3) | 0.8567 (2) | 0.0306 (6) | |
C22A | 0.7056 (3) | 0.5679 (3) | 0.8189 (3) | 0.0360 (6) | |
H22A | 0.6718 | 0.5512 | 0.7440 | 0.043* | |
C23A | 0.7412 (3) | 0.4696 (3) | 0.8918 (3) | 0.0420 (7) | |
H23A | 0.7306 | 0.3872 | 0.8658 | 0.050* | |
C24A | 0.7929 (3) | 0.4928 (3) | 1.0041 (3) | 0.0439 (7) | |
H24A | 0.8182 | 0.4263 | 1.0523 | 0.053* | |
C25A | 0.8064 (3) | 0.6152 (3) | 1.0436 (3) | 0.0420 (7) | |
H25A | 0.8398 | 0.6314 | 1.1188 | 0.050* | |
C26A | 0.7696 (3) | 0.7141 (3) | 0.9699 (3) | 0.0353 (6) | |
H26A | 0.7785 | 0.7963 | 0.9969 | 0.042* | |
O1B | 0.4163 (2) | 0.2192 (2) | 0.9087 (2) | 0.0479 (6) | |
O2B | 0.5711 (2) | 0.1759 (2) | 0.7956 (2) | 0.0434 (5) | |
N1B | 0.3838 (3) | 0.5717 (3) | 0.6228 (4) | 0.0636 (10) | |
C1B | 0.4838 (3) | 0.2391 (3) | 0.8226 (2) | 0.0326 (6) | |
C2B | 0.4475 (3) | 0.3537 (3) | 0.7500 (2) | 0.0328 (6) | |
C3B | 0.4993 (3) | 0.3812 (3) | 0.6435 (3) | 0.0438 (7) | |
H3B | 0.5574 | 0.3281 | 0.6132 | 0.053* | |
C4B | 0.4628 (4) | 0.4892 (4) | 0.5830 (3) | 0.0604 (11) | |
H4B | 0.4956 | 0.5046 | 0.5102 | 0.072* | |
C5B | 0.3354 (4) | 0.5444 (4) | 0.7234 (4) | 0.0584 (10) | |
H5B | 0.2787 | 0.6003 | 0.7518 | 0.070* | |
C6B | 0.3624 (3) | 0.4388 (3) | 0.7899 (3) | 0.0401 (7) | |
H6B | 0.3244 | 0.4246 | 0.8603 | 0.048* |
U11 | U22 | U33 | U12 | U13 | U23 | |
F1A | 0.0610 (13) | 0.0588 (12) | 0.0435 (11) | 0.0125 (10) | 0.0239 (9) | 0.0020 (9) |
F2A | 0.0701 (15) | 0.0701 (14) | 0.0688 (15) | 0.0143 (11) | 0.0076 (12) | 0.0431 (12) |
N1A | 0.0251 (11) | 0.0285 (10) | 0.0256 (11) | 0.0021 (8) | 0.0031 (8) | 0.0020 (8) |
N2A | 0.0258 (12) | 0.0318 (11) | 0.0238 (11) | 0.0027 (9) | −0.0002 (8) | −0.0024 (9) |
C1A | 0.0282 (13) | 0.0253 (12) | 0.0272 (13) | −0.0001 (10) | −0.0023 (10) | −0.0015 (10) |
C2A | 0.0277 (13) | 0.0240 (12) | 0.0296 (13) | 0.0034 (10) | 0.0017 (10) | 0.0034 (9) |
C3A | 0.0301 (13) | 0.0258 (12) | 0.0316 (13) | 0.0011 (10) | 0.0017 (10) | 0.0002 (9) |
C4A | 0.0445 (16) | 0.0266 (12) | 0.0295 (13) | 0.0066 (11) | 0.0006 (12) | −0.0001 (10) |
C5A | 0.0448 (17) | 0.0306 (13) | 0.0345 (14) | 0.0099 (12) | 0.0149 (12) | 0.0086 (11) |
C6A | 0.0300 (14) | 0.0377 (15) | 0.0452 (17) | 0.0050 (12) | 0.0074 (12) | 0.0109 (12) |
C7A | 0.0305 (14) | 0.0316 (13) | 0.0342 (14) | 0.0005 (10) | −0.0029 (11) | 0.0066 (11) |
C8A | 0.0257 (12) | 0.0324 (13) | 0.0277 (13) | 0.0044 (11) | 0.0021 (10) | 0.0024 (10) |
C9A | 0.0313 (14) | 0.0428 (15) | 0.0309 (14) | 0.0020 (11) | 0.0016 (11) | 0.0018 (12) |
C10A | 0.0341 (16) | 0.067 (2) | 0.0311 (15) | 0.0048 (14) | −0.0008 (12) | 0.0123 (14) |
C11A | 0.0438 (18) | 0.0467 (18) | 0.0480 (19) | 0.0079 (14) | 0.0085 (14) | 0.0221 (15) |
C12A | 0.0536 (19) | 0.0324 (15) | 0.0510 (19) | 0.0035 (14) | 0.0122 (15) | 0.0096 (13) |
C13A | 0.0435 (17) | 0.0324 (15) | 0.0340 (15) | 0.0027 (12) | 0.0029 (12) | 0.0029 (11) |
C14A | 0.0310 (14) | 0.0338 (13) | 0.0255 (13) | 0.0031 (11) | 0.0032 (11) | 0.0035 (10) |
C15A | 0.0310 (14) | 0.0338 (13) | 0.0243 (13) | −0.0010 (11) | 0.0036 (10) | 0.0020 (10) |
C16A | 0.0305 (14) | 0.0298 (12) | 0.0238 (12) | 0.0038 (10) | 0.0019 (10) | 0.0026 (10) |
C17A | 0.0293 (13) | 0.0290 (12) | 0.0277 (13) | 0.0011 (10) | 0.0032 (10) | 0.0037 (10) |
C18A | 0.0260 (14) | 0.0421 (15) | 0.0332 (15) | 0.0021 (11) | 0.0007 (11) | −0.0016 (11) |
C19A | 0.0269 (14) | 0.0351 (14) | 0.0363 (15) | 0.0047 (11) | 0.0005 (11) | −0.0066 (11) |
C20A | 0.0276 (13) | 0.0329 (14) | 0.0368 (14) | −0.0007 (11) | 0.0023 (11) | −0.0035 (11) |
C21A | 0.0220 (12) | 0.0361 (14) | 0.0338 (15) | −0.0008 (10) | 0.0030 (10) | 0.0008 (11) |
C22A | 0.0325 (15) | 0.0396 (15) | 0.0357 (15) | −0.0031 (12) | −0.0024 (12) | −0.0045 (12) |
C23A | 0.0389 (17) | 0.0326 (14) | 0.0545 (19) | 0.0005 (13) | 0.0029 (14) | −0.0015 (13) |
C24A | 0.0395 (17) | 0.0445 (17) | 0.0476 (18) | 0.0031 (13) | 0.0013 (14) | 0.0131 (14) |
C25A | 0.0391 (16) | 0.0529 (18) | 0.0338 (14) | 0.0006 (14) | −0.0025 (12) | 0.0029 (13) |
C26A | 0.0339 (15) | 0.0368 (15) | 0.0351 (15) | −0.0031 (12) | 0.0015 (12) | −0.0028 (11) |
O1B | 0.0465 (13) | 0.0533 (13) | 0.0444 (13) | 0.0075 (11) | 0.0073 (10) | 0.0189 (10) |
O2B | 0.0362 (12) | 0.0411 (11) | 0.0529 (13) | 0.0060 (9) | 0.0027 (10) | −0.0053 (9) |
N1B | 0.0457 (18) | 0.068 (2) | 0.077 (2) | −0.0050 (15) | −0.0011 (16) | 0.0407 (18) |
C1B | 0.0317 (14) | 0.0346 (14) | 0.0311 (13) | −0.0056 (12) | −0.0023 (11) | −0.0033 (11) |
C2B | 0.0324 (14) | 0.0361 (14) | 0.0294 (13) | −0.0091 (11) | −0.0023 (10) | −0.0008 (11) |
C3B | 0.0436 (17) | 0.0529 (18) | 0.0353 (15) | −0.0173 (14) | 0.0043 (13) | −0.0030 (13) |
C4B | 0.057 (2) | 0.087 (3) | 0.0363 (18) | −0.026 (2) | −0.0027 (16) | 0.0219 (18) |
C5B | 0.045 (2) | 0.050 (2) | 0.081 (3) | 0.0008 (16) | 0.0043 (19) | 0.0200 (19) |
C6B | 0.0408 (17) | 0.0391 (15) | 0.0407 (17) | −0.0044 (13) | 0.0048 (13) | 0.0056 (12) |
F1A—C5A | 1.363 (3) | C16A—H16A | 0.9700 |
F2A—C11A | 1.360 (4) | C16A—H16B | 0.9700 |
N1A—C1A | 1.479 (3) | C16A—C17A | 1.511 (4) |
N1A—C14A | 1.463 (3) | C17A—H17A | 0.9700 |
N1A—C17A | 1.471 (3) | C17A—H17B | 0.9700 |
N2A—H2A | 0.94 (4) | C18A—H18A | 0.9700 |
N2A—C15A | 1.493 (3) | C18A—H18B | 0.9700 |
N2A—C16A | 1.492 (3) | C18A—C19A | 1.499 (4) |
N2A—C18A | 1.499 (3) | C19A—H19A | 0.9300 |
C1A—H1A | 0.9800 | C19A—C20A | 1.319 (4) |
C1A—C2A | 1.524 (3) | C20A—H20A | 0.9300 |
C1A—C8A | 1.525 (3) | C20A—C21A | 1.472 (4) |
C2A—C3A | 1.392 (4) | C21A—C22A | 1.401 (4) |
C2A—C7A | 1.398 (4) | C21A—C26A | 1.393 (4) |
C3A—H3A | 0.9300 | C22A—H22A | 0.9300 |
C3A—C4A | 1.395 (4) | C22A—C23A | 1.379 (4) |
C4A—H4A | 0.9300 | C23A—H23A | 0.9300 |
C4A—C5A | 1.366 (4) | C23A—C24A | 1.395 (5) |
C5A—C6A | 1.381 (5) | C24A—H24A | 0.9300 |
C6A—H6A | 0.9300 | C24A—C25A | 1.383 (5) |
C6A—C7A | 1.386 (4) | C25A—H25A | 0.9300 |
C7A—H7A | 0.9300 | C25A—C26A | 1.393 (4) |
C8A—C9A | 1.387 (4) | C26A—H26A | 0.9300 |
C8A—C13A | 1.394 (4) | O1B—C1B | 1.270 (4) |
C9A—H9A | 0.9300 | O2B—C1B | 1.223 (4) |
C9A—C10A | 1.395 (4) | N1B—C4B | 1.329 (6) |
C10A—H10A | 0.9300 | N1B—C5B | 1.311 (5) |
C10A—C11A | 1.366 (5) | C1B—C2B | 1.515 (4) |
C11A—C12A | 1.377 (5) | C2B—C3B | 1.388 (4) |
C12A—H12A | 0.9300 | C2B—C6B | 1.392 (4) |
C12A—C13A | 1.385 (4) | C3B—H3B | 0.9300 |
C13A—H13A | 0.9300 | C3B—C4B | 1.389 (6) |
C14A—H14A | 0.9700 | C4B—H4B | 0.9300 |
C14A—H14B | 0.9700 | C5B—H5B | 0.9300 |
C14A—C15A | 1.512 (4) | C5B—C6B | 1.379 (5) |
C15A—H15A | 0.9700 | C6B—H6B | 0.9300 |
C15A—H15B | 0.9700 | ||
C14A—N1A—C1A | 113.4 (2) | H15A—C15A—H15B | 108.0 |
C14A—N1A—C17A | 107.66 (19) | N2A—C16A—H16A | 109.6 |
C17A—N1A—C1A | 109.43 (19) | N2A—C16A—H16B | 109.6 |
C15A—N2A—H2A | 104 (2) | N2A—C16A—C17A | 110.1 (2) |
C15A—N2A—C18A | 110.1 (2) | H16A—C16A—H16B | 108.2 |
C16A—N2A—H2A | 113 (2) | C17A—C16A—H16A | 109.6 |
C16A—N2A—C15A | 109.35 (19) | C17A—C16A—H16B | 109.6 |
C16A—N2A—C18A | 112.1 (2) | N1A—C17A—C16A | 111.3 (2) |
C18A—N2A—H2A | 108 (2) | N1A—C17A—H17A | 109.4 |
N1A—C1A—H1A | 108.0 | N1A—C17A—H17B | 109.4 |
N1A—C1A—C2A | 110.3 (2) | C16A—C17A—H17A | 109.4 |
N1A—C1A—C8A | 112.5 (2) | C16A—C17A—H17B | 109.4 |
C2A—C1A—H1A | 108.0 | H17A—C17A—H17B | 108.0 |
C2A—C1A—C8A | 110.0 (2) | N2A—C18A—H18A | 109.1 |
C8A—C1A—H1A | 108.0 | N2A—C18A—H18B | 109.1 |
C3A—C2A—C1A | 121.8 (2) | H18A—C18A—H18B | 107.8 |
C3A—C2A—C7A | 118.5 (2) | C19A—C18A—N2A | 112.7 (2) |
C7A—C2A—C1A | 119.6 (2) | C19A—C18A—H18A | 109.1 |
C2A—C3A—H3A | 119.6 | C19A—C18A—H18B | 109.1 |
C2A—C3A—C4A | 120.7 (3) | C18A—C19A—H19A | 118.8 |
C4A—C3A—H3A | 119.6 | C20A—C19A—C18A | 122.3 (3) |
C3A—C4A—H4A | 120.6 | C20A—C19A—H19A | 118.8 |
C5A—C4A—C3A | 118.7 (3) | C19A—C20A—H20A | 115.9 |
C5A—C4A—H4A | 120.6 | C19A—C20A—C21A | 128.3 (3) |
F1A—C5A—C4A | 119.2 (3) | C21A—C20A—H20A | 115.9 |
F1A—C5A—C6A | 118.0 (3) | C22A—C21A—C20A | 122.7 (3) |
C4A—C5A—C6A | 122.8 (3) | C26A—C21A—C20A | 119.1 (2) |
C5A—C6A—H6A | 121.0 | C26A—C21A—C22A | 118.1 (3) |
C5A—C6A—C7A | 117.9 (3) | C21A—C22A—H22A | 119.6 |
C7A—C6A—H6A | 121.0 | C23A—C22A—C21A | 120.7 (3) |
C2A—C7A—H7A | 119.3 | C23A—C22A—H22A | 119.6 |
C6A—C7A—C2A | 121.4 (3) | C22A—C23A—H23A | 119.8 |
C6A—C7A—H7A | 119.3 | C22A—C23A—C24A | 120.4 (3) |
C9A—C8A—C1A | 119.3 (2) | C24A—C23A—H23A | 119.8 |
C9A—C8A—C13A | 119.4 (3) | C23A—C24A—H24A | 120.1 |
C13A—C8A—C1A | 121.3 (2) | C25A—C24A—C23A | 119.7 (3) |
C8A—C9A—H9A | 119.7 | C25A—C24A—H24A | 120.1 |
C8A—C9A—C10A | 120.6 (3) | C24A—C25A—H25A | 120.2 |
C10A—C9A—H9A | 119.7 | C24A—C25A—C26A | 119.6 (3) |
C9A—C10A—H10A | 120.9 | C26A—C25A—H25A | 120.2 |
C11A—C10A—C9A | 118.3 (3) | C21A—C26A—C25A | 121.4 (3) |
C11A—C10A—H10A | 120.9 | C21A—C26A—H26A | 119.3 |
F2A—C11A—C10A | 119.1 (3) | C25A—C26A—H26A | 119.3 |
F2A—C11A—C12A | 118.1 (3) | C5B—N1B—C4B | 116.4 (3) |
C10A—C11A—C12A | 122.8 (3) | O1B—C1B—C2B | 113.8 (3) |
C11A—C12A—H12A | 120.7 | O2B—C1B—O1B | 126.3 (3) |
C11A—C12A—C13A | 118.6 (3) | O2B—C1B—C2B | 119.9 (3) |
C13A—C12A—H12A | 120.7 | C3B—C2B—C1B | 122.3 (3) |
C8A—C13A—H13A | 119.9 | C3B—C2B—C6B | 116.9 (3) |
C12A—C13A—C8A | 120.3 (3) | C6B—C2B—C1B | 120.8 (2) |
C12A—C13A—H13A | 119.9 | C2B—C3B—H3B | 120.6 |
N1A—C14A—H14A | 109.7 | C2B—C3B—C4B | 118.9 (3) |
N1A—C14A—H14B | 109.7 | C4B—C3B—H3B | 120.6 |
N1A—C14A—C15A | 110.0 (2) | N1B—C4B—C3B | 124.0 (3) |
H14A—C14A—H14B | 108.2 | N1B—C4B—H4B | 118.0 |
C15A—C14A—H14A | 109.7 | C3B—C4B—H4B | 118.0 |
C15A—C14A—H14B | 109.7 | N1B—C5B—H5B | 117.6 |
N2A—C15A—C14A | 111.0 (2) | N1B—C5B—C6B | 124.8 (4) |
N2A—C15A—H15A | 109.4 | C6B—C5B—H5B | 117.6 |
N2A—C15A—H15B | 109.4 | C2B—C6B—H6B | 120.5 |
C14A—C15A—H15A | 109.4 | C5B—C6B—C2B | 119.0 (3) |
C14A—C15A—H15B | 109.4 | C5B—C6B—H6B | 120.5 |
F1A—C5A—C6A—C7A | −177.8 (2) | C14A—N1A—C1A—C8A | −44.2 (3) |
F2A—C11A—C12A—C13A | 179.6 (3) | C14A—N1A—C17A—C16A | 61.8 (3) |
N1A—C1A—C2A—C3A | 30.7 (3) | C15A—N2A—C16A—C17A | 54.7 (3) |
N1A—C1A—C2A—C7A | −153.4 (2) | C15A—N2A—C18A—C19A | 175.0 (2) |
N1A—C1A—C8A—C9A | 112.3 (3) | C16A—N2A—C15A—C14A | −55.8 (3) |
N1A—C1A—C8A—C13A | −69.0 (3) | C16A—N2A—C18A—C19A | 53.1 (3) |
N1A—C14A—C15A—N2A | 60.2 (3) | C17A—N1A—C1A—C2A | 72.5 (3) |
N2A—C16A—C17A—N1A | −59.2 (3) | C17A—N1A—C1A—C8A | −164.4 (2) |
N2A—C18A—C19A—C20A | −116.8 (3) | C17A—N1A—C14A—C15A | −61.5 (3) |
C1A—N1A—C14A—C15A | 177.2 (2) | C18A—N2A—C15A—C14A | −179.3 (2) |
C1A—N1A—C17A—C16A | −174.5 (2) | C18A—N2A—C16A—C17A | 177.0 (2) |
C1A—C2A—C3A—C4A | 175.8 (2) | C18A—C19A—C20A—C21A | −179.0 (2) |
C1A—C2A—C7A—C6A | −175.5 (2) | C19A—C20A—C21A—C22A | 0.9 (4) |
C1A—C8A—C9A—C10A | 178.0 (3) | C19A—C20A—C21A—C26A | 179.0 (3) |
C1A—C8A—C13A—C12A | −178.2 (3) | C20A—C21A—C22A—C23A | 177.5 (3) |
C2A—C1A—C8A—C9A | −124.4 (3) | C20A—C21A—C26A—C25A | −177.2 (3) |
C2A—C1A—C8A—C13A | 54.3 (3) | C21A—C22A—C23A—C24A | −0.5 (5) |
C2A—C3A—C4A—C5A | −0.1 (4) | C22A—C21A—C26A—C25A | 1.0 (4) |
C3A—C2A—C7A—C6A | 0.5 (4) | C22A—C23A—C24A—C25A | 1.3 (5) |
C3A—C4A—C5A—F1A | 178.1 (2) | C23A—C24A—C25A—C26A | −0.9 (5) |
C3A—C4A—C5A—C6A | −0.1 (4) | C24A—C25A—C26A—C21A | −0.3 (5) |
C4A—C5A—C6A—C7A | 0.4 (4) | C26A—C21A—C22A—C23A | −0.6 (4) |
C5A—C6A—C7A—C2A | −0.7 (4) | O1B—C1B—C2B—C3B | −171.0 (3) |
C7A—C2A—C3A—C4A | −0.1 (4) | O1B—C1B—C2B—C6B | 11.0 (4) |
C8A—C1A—C2A—C3A | −93.9 (3) | O2B—C1B—C2B—C3B | 9.0 (4) |
C8A—C1A—C2A—C7A | 82.0 (3) | O2B—C1B—C2B—C6B | −169.0 (3) |
C8A—C9A—C10A—C11A | 0.2 (4) | N1B—C5B—C6B—C2B | 0.4 (6) |
C9A—C8A—C13A—C12A | 0.5 (4) | C1B—C2B—C3B—C4B | −178.9 (3) |
C9A—C10A—C11A—F2A | −179.8 (3) | C1B—C2B—C6B—C5B | 177.5 (3) |
C9A—C10A—C11A—C12A | 0.5 (5) | C2B—C3B—C4B—N1B | 2.7 (6) |
C10A—C11A—C12A—C13A | −0.7 (5) | C3B—C2B—C6B—C5B | −0.6 (5) |
C11A—C12A—C13A—C8A | 0.1 (5) | C4B—N1B—C5B—C6B | 1.2 (6) |
C13A—C8A—C9A—C10A | −0.7 (4) | C5B—N1B—C4B—C3B | −2.8 (6) |
C14A—N1A—C1A—C2A | −167.3 (2) | C6B—C2B—C3B—C4B | −0.8 (4) |
D—H···A | D—H | H···A | D···A | D—H···A |
N2A—H2A···O1Bi | 0.94 (4) | 1.62 (4) | 2.557 (3) | 176 (4) |
C6A—H6A···O2Bii | 0.93 | 2.60 | 3.439 (4) | 151 |
Symmetry codes: (i) x, −y+1, z−1/2; (ii) x−1, y+1, z. |
D—H···A | D—H | H···A | D···A | D—H···A |
N2A—H2A···O1Bi | 0.94 (4) | 1.62 (4) | 2.557 (3) | 176 (4) |
C6A—H6A···O2Bii | 0.93 | 2.60 | 3.439 (4) | 151.0 |
Symmetry codes: (i) x, −y+1, z−1/2; (ii) x−1, y+1, z. |
Acknowledgements
CNK thanks the University of Mysore for research facilities and is also grateful to the Principal, Maharani's Science College for Women, Mysore, for giving permission to do research. JPJ acknowledges the NSF–MRI program (grant No. CHE-1039027) for funds to purchase the X-ray diffractometer.
References
Agilent (2012). CrysAlis PRO and CrysAlis RED. Agilent Technologies, Yarnton, Oxfordshire, England. Google Scholar
Allen, F. H., Kennard, O., Watson, D. G., Brammer, L., Orpen, A. G. & Taylor, R. (1987). J. Chem. Soc. Perkin Trans. 2, pp. S1–19. CrossRef Web of Science Google Scholar
Amery, W. K. (1983). Headache, 23, 70–74. CrossRef CAS PubMed Web of Science Google Scholar
Cremer, D. & Pople, J. A. (1975). J. Am. Chem. Soc. 97, 1354–1358. CrossRef CAS Web of Science Google Scholar
Dolomanov, O. V., Bourhis, L. J., Gildea, R. J., Howard, J. A. K. & Puschmann, H. (2009). J. Appl. Cryst. 42, 339–341. Web of Science CrossRef CAS IUCr Journals Google Scholar
Flack, H. D. (1983). Acta Cryst. A39, 876–881. CrossRef CAS Web of Science IUCr Journals Google Scholar
Holmes, B., Brogden, R. N., Heel, R. C., Speight, T. M. & Avery, G. S. (1984). Drugs, 27, 6–44. CrossRef CAS PubMed Web of Science Google Scholar
Kavitha, C. N., Butcher, R. J., Jasinski, J. P., Yathirajan, H. S. & Dayananda, A. S. (2013d). Acta Cryst. E69, o485–o486. CSD CrossRef CAS IUCr Journals Google Scholar
Kavitha, C. N., Jasinski, J. P., Matar, S. M., Yathirajan, H. S. & Ramesha, A. R. (2013b). Acta Cryst. E69, o1344. CSD CrossRef IUCr Journals Google Scholar
Kavitha, C. N., Yathirajan, H. S., Narayana, B., Gerber, T., van Brecht, B. & Betz, R. (2013a). Acta Cryst. E69, o260–o261. CSD CrossRef CAS IUCr Journals Google Scholar
Kavitha, C. N., Yildirim, S. Ō. ¯, Jasinski, J. P., Yathirajan, H. S. & Butcher, R. J. (2013c). Acta Cryst. E69, o142–o143. CSD CrossRef CAS IUCr Journals Google Scholar
Palatinus, L. & Chapuis, G. (2007). J. Appl. Cryst. 40, 786–790. Web of Science CrossRef CAS IUCr Journals 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
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.
Flunarizine (1-[bis(4-fluorophenyl)methyl]-4-[(2E)-3-phenylprop-2-en-1-yl]piperazine), a piperazine derivative is a non-selective calcium antagonist (Amery, 1983). It is effective in the prophylaxis of migraine, occlusive peripheral vascular disease, vertigo of central and peripheral origin, and as an adjuvant in the therapy of epilepsy. A review of its pharmacodynamic and pharmacokinetic properties and therapeutic use is published (Holmes et al., 1984). The crystal structures of 4- [bis(4-fluorophenyl)methyl]-1-[(2E)-3-phenylprop-2-en-1-yl]piperazin-1-ium- 3-carboxy propanoate (Kavitha et al., 2013a), flunarizinium hydrogen maleate (Kavitha et al., 2013b), cinnarizinium fumarate (Kavitha et al., 2013c) and cinnarizinium bis(p-toluenesulfonate)dihydrate (Kavitha et al., 2013d) have been reported. In view of the importance of flunarizine, this paper reports the crystal structure study of flunarizinium isonicotinate, (I), C26H27F2N2+.C6H4NO2-.
The title salt, (I), crystallizes with one piperazinium cation (A) and one isonicotinate anion (B) in the asymmetric unit (Fig. 1). In the cation, the piperazine ring is in a slightly distorted chair conformation (puckering parameters Q, θ, and ϕ = 0.596 (3)Å, 3.3 (3)° and 10 (4)°, respectively (Cremer & Pople, 1975) and is twisted from the mean plane of the phenyl ring in an anti-periplanar conformation with a torsion angle of -178.9 (7)°. The dihedral angle between the mean planes of the two fluoro-substituted benzene rings is 81.9 (1)°. Of the two fluro-substitutted benzene ring rings, one (C8A–C13A) is almost planar with respect to the mean plane of the phenyl ring forming a diherdral angle of 6.5 (1)°, while the other (C2A–C7A) is twisted by 87.8 (1)°. Bond lengths are in normal ranges (Allen et al., 1987). A single N2A—H2A···O1Bi intermolecular hydrogen bond links the cation with the anion (Fig. 2). In addition, weak C—H···O intermolecular interactions (Table 1) and a weak π–π stacking interaction involving one of the fluoro-substituted benzene rings and the phenyl ring, link the molecules along [100] (Cg1–Cg2 = 3.700 (7)Å; -1+x, 1+y, z; Cg1 = C8A–C13A; Cg2 = C21A–C26A).