Supporting information
Crystallographic Information File (CIF) https://doi.org/10.1107/S1600536801010315/ya6033sup1.cif | |
Structure factor file (CIF format) https://doi.org/10.1107/S1600536801010315/ya6033Isup2.hkl |
CCDC reference: 170787
The title compound was obtained from the Janssen Research Foundation, Beerse, Belgium. The synthesis has been described by Venet et al. (1996). Single crystals were grown by slow evaporation from a solution in ethanol.
After checking their presence in the difference map (which, in particular, unambiguously confirmed the protonation of the N1 and N16 atoms), H atoms were placed in the geometrically calculated positions. All H atoms were allowed to ride on their parent atom. The isotropic displacement parameters were fixed at 1.2Ueq of their parent atoms. The CF3 group shows a rotational disorder. It was modelled by two CF3 groups with an occupation factor of 0.5 and refined using distance restraints.
Data collection: DIF4 (Stoe & Cie, 1992); cell refinement: DIF4; data reduction: REDU4 (Stoe & Cie, 1992); program(s) used to solve structure: SIR92 (Altomare et al., 1994); program(s) used to refine structure: SHELXL97 (Sheldrick, 1997); molecular graphics: DIAMOND (Bergerhoff, 1996); software used to prepare material for publication: PARST (Nardelli, 1983).
C19H14F3N4O+·Br− | Dx = 1.538 Mg m−3 Dm = 1.525 Mg m−3 Dm measured by flotation in CCl4/n-heptane |
Mr = 451.25 | Mo Kα radiation, λ = 0.71073 Å |
Orthorhombic, P212121 | Cell parameters from 24 reflections |
a = 7.058 (4) Å | θ = 7.5–11.0° |
b = 16.212 (8) Å | µ = 2.15 mm−1 |
c = 17.029 (9) Å | T = 293 K |
V = 1949 (2) Å3 | Block, colourless |
Z = 4 | 0.50 × 0.30 × 0.30 mm |
F(000) = 904 |
Stoe Stadi-4 four-circle diffractometer | Rint = 0.029 |
ω scans | θmax = 25.1° |
Absorption correction: ψ scan (EMPIR; Stoe & Cie, 1992) | h = −8→8 |
Tmin = 0.427, Tmax = 0.525 | k = −19→19 |
5505 measured reflections | l = −20→20 |
3463 independent reflections | 3 standard reflections every 60 min |
2660 reflections with I > 2σ(I) | intensity decay: 5.0% |
Refinement on F2 | H-atom parameters constrained |
Least-squares matrix: full | w = 1/[σ2(Fo2) + (0.024P)2] where P = (Fo2 + 2Fc2)/3 |
R[F2 > 2σ(F2)] = 0.034 | (Δ/σ)max = 0.001 |
wR(F2) = 0.064 | Δρmax = 0.21 e Å−3 |
S = 1.04 | Δρmin = −0.22 e Å−3 |
3463 reflections | Absolute structure: Flack (1983), 1457 Friedel pairs |
289 parameters | Absolute structure parameter: 0.000 (9) |
C19H14F3N4O+·Br− | V = 1949 (2) Å3 |
Mr = 451.25 | Z = 4 |
Orthorhombic, P212121 | Mo Kα radiation |
a = 7.058 (4) Å | µ = 2.15 mm−1 |
b = 16.212 (8) Å | T = 293 K |
c = 17.029 (9) Å | 0.50 × 0.30 × 0.30 mm |
Stoe Stadi-4 four-circle diffractometer | 2660 reflections with I > 2σ(I) |
Absorption correction: ψ scan (EMPIR; Stoe & Cie, 1992) | Rint = 0.029 |
Tmin = 0.427, Tmax = 0.525 | 3 standard reflections every 60 min |
5505 measured reflections | intensity decay: 5.0% |
3463 independent reflections |
R[F2 > 2σ(F2)] = 0.034 | H-atom parameters constrained |
wR(F2) = 0.064 | Δρmax = 0.21 e Å−3 |
S = 1.04 | Δρmin = −0.22 e Å−3 |
3463 reflections | Absolute structure: Flack (1983), 1457 Friedel pairs |
289 parameters | Absolute structure parameter: 0.000 (9) |
x | y | z | Uiso*/Ueq | Occ. (<1) | |
Br | 0.45252 (5) | 1.10851 (2) | 0.41140 (2) | 0.0535 (1)* | |
N1 | 0.2842 (4) | 1.0773 (2) | 0.5893 (2) | 0.0434 (9)* | |
C2 | 0.1134 (5) | 1.1068 (2) | 0.6127 (2) | 0.048 (1)* | |
C3 | 0.0385 (7) | 1.0728 (2) | 0.6841 (2) | 0.057 (1)* | |
C4 | 0.1324 (6) | 1.0157 (2) | 0.7245 (2) | 0.056 (1)* | |
C5 | 0.3106 (5) | 0.9852 (2) | 0.6979 (2) | 0.042 (1)* | |
C6 | 0.4113 (5) | 0.9232 (2) | 0.7376 (2) | 0.046 (1)* | |
C7 | 0.5804 (5) | 0.8941 (2) | 0.7093 (2) | 0.041 (1)* | |
C8 | 0.6521 (5) | 0.9279 (2) | 0.6395 (2) | 0.047 (1)* | |
C9 | 0.5575 (6) | 0.9889 (2) | 0.6004 (2) | 0.048 (1)* | |
C10 | 0.3846 (5) | 1.0175 (2) | 0.6292 (2) | 0.039 (1)* | |
O11 | 0.0312 (4) | 1.1609 (2) | 0.5738 (1) | 0.064 (1)* | |
C12 | 0.6953 (5) | 0.8275 (2) | 0.7502 (2) | 0.044 (1)* | |
N13 | 0.5872 (4) | 0.7932 (2) | 0.8170 (2) | 0.0384 (9)* | |
N14 | 0.4368 (5) | 0.7405 (2) | 0.8069 (2) | 0.050 (1)* | |
C15 | 0.3699 (6) | 0.7333 (2) | 0.8779 (2) | 0.054 (1)* | |
N16 | 0.4703 (4) | 0.7775 (2) | 0.9302 (2) | 0.048 (1)* | |
C17 | 0.6034 (5) | 0.8156 (2) | 0.8901 (2) | 0.047 (1)* | |
C18 | 0.7636 (5) | 0.7612 (2) | 0.6948 (2) | 0.050 (1)* | |
C19 | 0.6417 (6) | 0.7213 (2) | 0.6449 (2) | 0.060 (2)* | |
C20 | 0.7065 (7) | 0.6616 (3) | 0.5940 (3) | 0.070 (2)* | |
C21 | 0.8946 (7) | 0.6420 (3) | 0.5925 (3) | 0.089 (2)* | |
C22 | 1.0170 (7) | 0.6816 (3) | 0.6416 (3) | 0.090 (2)* | |
C23 | 0.9533 (7) | 0.7409 (3) | 0.6928 (2) | 0.068 (2)* | |
C24A | 0.582 (2) | 0.621 (1) | 0.534 (1) | 0.080 (7)* | .5 |
F25A | 0.647 (3) | 0.6300 (8) | 0.4607 (7) | 0.161 (7)* | .5 |
F26A | 0.408 (2) | 0.649 (2) | 0.534 (1) | 0.137 (7)* | .5 |
F27A | 0.561 (3) | 0.542 (1) | 0.549 (1) | 0.17 (1)* | .5 |
C24B | 0.557 (3) | 0.615 (1) | 0.551 (1) | 0.13 (1)* | .5 |
F25B | 0.635 (2) | 0.5758 (9) | 0.4899 (8) | 0.151 (8)* | .5 |
F26B | 0.436 (3) | 0.667 (1) | 0.517 (1) | 0.147 (8)* | .5 |
F27B | 0.462 (3) | 0.558 (1) | 0.589 (1) | 0.180 (9)* | .5 |
H1 | 0.3328 | 1.0970 | 0.5469 | 0.054* | |
H3 | −0.0783 | 1.0911 | 0.7025 | 0.071* | |
H4 | 0.0809 | 0.9954 | 0.7709 | 0.070* | |
H6 | 0.3624 | 0.9015 | 0.7839 | 0.058* | |
H8 | 0.7662 | 0.9084 | 0.6194 | 0.058* | |
H9 | 0.6083 | 1.0113 | 0.5548 | 0.060* | |
H12 | 0.8081 | 0.8543 | 0.7720 | 0.055* | |
H15 | 0.2651 | 0.7012 | 0.8909 | 0.067* | |
H16 | 0.4512 | 0.7803 | 0.9800 | 0.060* | |
H17 | 0.6928 | 0.8520 | 0.9104 | 0.059* | |
H19 | 0.5135 | 0.7347 | 0.6454 | 0.075* | |
H21 | 0.9390 | 0.6018 | 0.5582 | 0.111* | |
H22 | 1.1452 | 0.6683 | 0.6405 | 0.112* | |
H23 | 1.0381 | 0.7674 | 0.7261 | 0.084* |
U11 | U22 | U33 | U12 | U13 | U23 | |
Br | 0.0456 (2) | 0.0716 (2) | 0.0431 (2) | −0.0051 (2) | 0.0067 (2) | 0.0027 (2) |
N1 | 0.050 (2) | 0.044 (2) | 0.036 (1) | 0.005 (1) | 0.008 (2) | 0.003 (2) |
C2 | 0.057 (2) | 0.045 (2) | 0.042 (2) | 0.006 (2) | 0.003 (2) | −0.001 (2) |
C3 | 0.058 (2) | 0.064 (2) | 0.047 (2) | 0.016 (3) | 0.013 (2) | 0.008 (2) |
C4 | 0.059 (2) | 0.065 (3) | 0.043 (2) | 0.012 (2) | 0.014 (2) | 0.012 (2) |
C5 | 0.045 (2) | 0.045 (2) | 0.036 (2) | 0.004 (2) | 0.001 (2) | 0.000 (2) |
C6 | 0.050 (3) | 0.050 (2) | 0.038 (2) | 0.000 (2) | 0.011 (2) | 0.009 (2) |
C7 | 0.039 (2) | 0.047 (2) | 0.037 (2) | −0.001 (2) | 0.002 (2) | −0.001 (2) |
C8 | 0.035 (2) | 0.056 (2) | 0.050 (2) | 0.004 (2) | 0.008 (2) | 0.003 (2) |
C9 | 0.051 (2) | 0.053 (2) | 0.039 (2) | −0.002 (2) | 0.009 (2) | 0.009 (2) |
C10 | 0.046 (2) | 0.037 (2) | 0.035 (2) | −0.001 (2) | 0.002 (2) | −0.003 (2) |
O11 | 0.076 (2) | 0.067 (2) | 0.050 (2) | 0.032 (2) | 0.012 (2) | 0.016 (1) |
C12 | 0.037 (2) | 0.055 (2) | 0.039 (2) | 0.000 (2) | −0.001 (2) | 0.005 (2) |
N13 | 0.035 (2) | 0.044 (2) | 0.037 (2) | 0.000 (1) | −0.001 (1) | 0.003 (1) |
N14 | 0.051 (2) | 0.051 (2) | 0.049 (2) | −0.010 (2) | 0.002 (2) | −0.007 (2) |
C15 | 0.055 (2) | 0.054 (2) | 0.052 (2) | −0.014 (2) | 0.005 (2) | −0.002 (2) |
N16 | 0.043 (2) | 0.064 (2) | 0.037 (2) | 0.006 (2) | 0.003 (2) | 0.004 (1) |
C17 | 0.042 (2) | 0.060 (2) | 0.039 (2) | −0.003 (2) | −0.005 (2) | −0.005 (2) |
C18 | 0.045 (2) | 0.059 (3) | 0.044 (2) | 0.017 (2) | 0.008 (2) | 0.013 (2) |
C19 | 0.053 (2) | 0.073 (3) | 0.054 (2) | 0.021 (2) | 0.001 (2) | −0.008 (2) |
C20 | 0.077 (3) | 0.078 (3) | 0.056 (3) | 0.023 (3) | 0.008 (3) | −0.012 (3) |
C21 | 0.096 (4) | 0.094 (3) | 0.075 (3) | 0.046 (3) | 0.024 (3) | −0.009 (3) |
C22 | 0.057 (3) | 0.111 (4) | 0.101 (4) | 0.037 (3) | 0.024 (3) | 0.004 (3) |
C23 | 0.046 (2) | 0.078 (3) | 0.078 (3) | 0.019 (3) | 0.006 (3) | 0.008 (3) |
C24A | 0.09 (1) | 0.08 (1) | 0.064 (8) | 0.02 (1) | 0.00 (1) | −0.046 (9) |
F25A | 0.18 (1) | 0.23 (2) | 0.070 (6) | 0.04 (1) | −0.004 (6) | −0.052 (8) |
F26A | 0.066 (7) | 0.18 (2) | 0.17 (1) | 0.019 (8) | 0.008 (8) | −0.12 (1) |
F27A | 0.20 (2) | 0.114 (9) | 0.20 (2) | −0.01 (1) | −0.05 (2) | −0.05 (1) |
C24B | 0.14 (3) | 0.17 (3) | 0.09 (1) | 0.07 (2) | 0.01 (1) | −0.04 (2) |
F25B | 0.136 (8) | 0.17 (2) | 0.14 (2) | 0.01 (1) | 0.03 (1) | −0.11 (1) |
F26B | 0.18 (2) | 0.15 (1) | 0.107 (7) | 0.04 (1) | −0.09 (1) | −0.044 (7) |
F27B | 0.22 (2) | 0.14 (1) | 0.18 (1) | −0.06 (1) | −0.01 (1) | −0.038 (9) |
N1—C2 | 1.357 (5) | N14—C15 | 1.303 (5) |
N1—C10 | 1.379 (4) | C15—N16 | 1.345 (5) |
N1—H1 | 0.860 | C15—H15 | 0.930 |
C2—C3 | 1.436 (5) | N16—C17 | 1.315 (4) |
C2—O11 | 1.242 (4) | N16—H16 | 0.860 |
C3—C4 | 1.330 (5) | C17—H17 | 0.930 |
C3—H3 | 0.930 | C18—C19 | 1.373 (5) |
C4—C5 | 1.426 (5) | C18—C23 | 1.379 (6) |
C4—H4 | 0.930 | C19—C20 | 1.376 (6) |
C5—C6 | 1.404 (5) | C19—H19 | 0.930 |
C5—C10 | 1.385 (5) | C20—C21 | 1.366 (7) |
C6—C7 | 1.370 (5) | C20—C24A | 1.50 (2) |
C6—H6 | 0.930 | C20—C24B | 1.49 (2) |
C7—C8 | 1.405 (5) | C21—C22 | 1.363 (7) |
C7—C12 | 1.518 (5) | C21—H21 | 0.930 |
C8—C9 | 1.366 (5) | C22—C23 | 1.373 (7) |
C8—H8 | 0.930 | C22—H22 | 0.930 |
C9—C10 | 1.394 (5) | C23—H23 | 0.930 |
C9—H9 | 0.930 | C24A—F25A | 1.34 (2) |
C12—N13 | 1.479 (4) | C24A—F26A | 1.31 (2) |
C12—C18 | 1.508 (5) | C24A—F27A | 1.31 (2) |
C12—H12 | 0.980 | C24B—F25B | 1.33 (3) |
N13—N14 | 1.373 (4) | C24B—F26B | 1.33 (3) |
N13—C17 | 1.302 (4) | C24B—F27B | 1.31 (3) |
C2—N1—C10 | 124.0 (3) | N14—C15—H15 | 124.0 |
C2—N1—H1 | 118.0 | N16—C15—H15 | 124.0 |
C10—N1—H1 | 118.0 | C15—N16—C17 | 106.5 (3) |
N1—C2—C3 | 116.1 (3) | C15—N16—H16 | 126.8 |
N1—C2—O11 | 120.5 (3) | C17—N16—H16 | 126.8 |
C3—C2—O11 | 123.4 (3) | N13—C17—N16 | 107.6 (3) |
C2—C3—C4 | 121.5 (3) | N13—C17—H17 | 126.2 |
C2—C3—H3 | 119.3 | N16—C17—H17 | 126.2 |
C4—C3—H3 | 119.3 | C12—C18—C19 | 121.5 (3) |
C3—C4—C5 | 121.1 (4) | C12—C18—C23 | 119.7 (3) |
C3—C4—H4 | 119.4 | C19—C18—C23 | 118.7 (4) |
C5—C4—H4 | 119.4 | C18—C19—C20 | 120.9 (4) |
C4—C5—C6 | 122.8 (3) | C18—C19—H19 | 119.6 |
C4—C5—C10 | 118.0 (3) | C20—C19—H19 | 119.6 |
C6—C5—C10 | 119.1 (3) | C19—C20—C21 | 119.9 (4) |
C5—C6—C7 | 121.3 (3) | C19—C20—C24A | 122.8 (7) |
C5—C6—H6 | 119.4 | C19—C20—C24B | 115.6 (9) |
C7—C6—H6 | 119.4 | C21—C20—C24A | 117.0 (8) |
C6—C7—C8 | 118.4 (3) | C21—C20—C24B | 124.1 (9) |
C6—C7—C12 | 123.3 (3) | C20—C21—C22 | 119.6 (5) |
C8—C7—C12 | 118.2 (3) | C20—C21—H21 | 120.2 |
C7—C8—C9 | 121.3 (3) | C22—C21—H21 | 120.2 |
C7—C8—H8 | 119.4 | C21—C22—C23 | 120.8 (4) |
C9—C8—H8 | 119.4 | C21—C22—H22 | 119.6 |
C8—C9—C10 | 119.8 (3) | C23—C22—H22 | 119.6 |
C8—C9—H9 | 120.1 | C18—C23—C22 | 120.1 (4) |
C10—C9—H9 | 120.1 | C18—C23—H23 | 120.0 |
N1—C10—C5 | 119.3 (3) | C22—C23—H23 | 120.0 |
N1—C10—C9 | 120.7 (3) | C20—C24A—F25A | 113 (1) |
C5—C10—C9 | 120.1 (3) | C20—C24A—F26A | 113 (1) |
C7—C12—N13 | 110.1 (3) | C20—C24A—F27A | 111 (1) |
C7—C12—C18 | 113.0 (3) | F25A—C24A—F26A | 107 (2) |
C7—C12—H12 | 107.0 | F25A—C24A—F27A | 109 (2) |
N13—C12—C18 | 112.2 (3) | F26A—C24A—F27A | 103 (2) |
N13—C12—H12 | 107.0 | C20—C24B—F25B | 110 (2) |
C18—C12—H12 | 107.0 | C20—C24B—F26B | 110 (2) |
C12—N13—N14 | 122.4 (3) | C20—C24B—F27B | 118 (2) |
C12—N13—C17 | 125.9 (3) | F25B—C24B—F26B | 104 (2) |
N14—N13—C17 | 111.1 (3) | F25B—C24B—F27B | 105 (2) |
N13—N14—C15 | 102.7 (3) | F26B—C24B—F27B | 109 (2) |
N14—C15—N16 | 112.0 (3) | ||
C10—N1—C2—C3 | 0.7 (5) | N13—C12—C18—C23 | −107.6 (4) |
C10—N1—C2—O11 | 179.8 (3) | H12—C12—C18—C19 | −169.2 |
H1—N1—C2—C3 | −179.3 | H12—C12—C18—C23 | 9.6 |
H1—N1—C2—O11 | −0.2 | C12—N13—N14—C15 | −172.8 (3) |
C2—N1—C10—C5 | −0.6 (5) | C17—N13—N14—C15 | −0.8 (4) |
C2—N1—C10—C9 | 178.5 (3) | C12—N13—C17—N16 | 173.4 (3) |
H1—N1—C10—C5 | 179.4 | C12—N13—C17—H17 | −6.6 |
H1—N1—C10—C9 | −1.5 | N14—N13—C17—N16 | 1.7 (4) |
N1—C2—C3—C4 | 0.1 (5) | N14—N13—C17—H17 | −178.4 |
N1—C2—C3—H3 | −179.9 | N13—N14—C15—N16 | −0.4 (4) |
O11—C2—C3—C4 | −179.1 (4) | N13—N14—C15—H15 | 179.6 |
O11—C2—C3—H3 | 0.9 | N14—C15—N16—C17 | 1.4 (4) |
C2—C3—C4—C5 | −0.8 (6) | N14—C15—N16—H16 | −178.6 |
C2—C3—C4—H4 | 179.2 | H15—C15—N16—C17 | −178.6 |
H3—C3—C4—C5 | 179.2 | H15—C15—N16—H16 | 1.4 |
H3—C3—C4—H4 | −0.8 | C15—N16—C17—N13 | −1.8 (4) |
C3—C4—C5—C6 | −178.0 (3) | C15—N16—C17—H17 | 178.2 |
C3—C4—C5—C10 | 0.9 (5) | H16—N16—C17—N13 | 178.2 |
H4—C4—C5—C6 | 2.0 | H16—N16—C17—H17 | −1.8 |
H4—C4—C5—C10 | −179.1 | C12—C18—C19—C20 | 179.2 (4) |
C4—C5—C6—C7 | 178.6 (3) | C12—C18—C19—H19 | −0.8 |
C4—C5—C6—H6 | −1.4 | C23—C18—C19—C20 | 0.4 (6) |
C10—C5—C6—C7 | −0.3 (5) | C23—C18—C19—H19 | −179.6 |
C10—C5—C6—H6 | 179.7 | C12—C18—C23—C22 | −178.9 (4) |
C4—C5—C10—N1 | −0.2 (5) | C12—C18—C23—H23 | 1.1 |
C4—C5—C10—C9 | −179.3 (3) | C19—C18—C23—C22 | −0.1 (6) |
C6—C5—C10—N1 | 178.7 (3) | C19—C18—C23—H23 | 179.9 |
C6—C5—C10—C9 | −0.4 (5) | C18—C19—C20—C21 | −0.4 (7) |
C5—C6—C7—C8 | 0.3 (5) | C18—C19—C20—C24A | −174.9 (8) |
C5—C6—C7—C12 | 179.7 (3) | C18—C19—C20—C24B | 172.2 (9) |
H6—C6—C7—C8 | −179.7 | H19—C19—C20—C21 | 179.6 |
H6—C6—C7—C12 | −0.3 | H19—C19—C20—C24A | 5.1 |
C6—C7—C8—C9 | 0.5 (5) | H19—C19—C20—C24B | −7.8 |
C6—C7—C8—H8 | −179.5 | C19—C20—C21—C22 | 0.1 (7) |
C12—C7—C8—C9 | −178.9 (3) | C19—C20—C21—H21 | −179.9 |
C12—C7—C8—H8 | 1.1 | C24A—C20—C21—C22 | 174.9 (8) |
C6—C7—C12—N13 | 7.0 (4) | C24A—C20—C21—H21 | −5.2 |
C6—C7—C12—C18 | 133.4 (3) | C24B—C20—C21—C22 | −171 (1) |
C6—C7—C12—H12 | −109.0 | C24B—C20—C21—H21 | 8.2 |
C8—C7—C12—N13 | −173.6 (3) | C19—C20—C24A—F25A | 122 (1) |
C8—C7—C12—C18 | −47.2 (4) | C19—C20—C24A—F26A | 1 (2) |
C8—C7—C12—H12 | 70.4 | C19—C20—C24A—F27A | −114 (1) |
C7—C8—C9—C10 | −1.2 (5) | C21—C20—C24A—F25A | −51 (2) |
C7—C8—C9—H9 | 178.8 | C21—C20—C24A—F26A | −173 (1) |
H8—C8—C9—C10 | 178.8 | C21—C20—C24A—F27A | 71 (2) |
H8—C8—C9—H9 | −1.2 | C19—C20—C24B—F25B | 164 (1) |
C8—C9—C10—N1 | −178.0 (3) | C19—C20—C24B—F26B | 50 (2) |
C8—C9—C10—C5 | 1.1 (5) | C19—C20—C24B—F27B | −75 (2) |
H9—C9—C10—N1 | 2.0 | C21—C20—C24B—F25B | −23 (2) |
H9—C9—C10—C5 | −178.9 | C21—C20—C24B—F26B | −136 (1) |
C7—C12—N13—N14 | 74.5 (4) | C21—C20—C24B—F27B | 96 (2) |
C7—C12—N13—C17 | −96.4 (4) | C20—C21—C22—C23 | 0.2 (8) |
C18—C12—N13—N14 | −52.4 (4) | C20—C21—C22—H22 | −179.8 |
C18—C12—N13—C17 | 136.8 (3) | H21—C21—C22—C23 | −179.8 |
H12—C12—N13—N14 | −169.5 | H21—C21—C22—H22 | 0.2 |
H12—C12—N13—C17 | 19.6 | C21—C22—C23—C18 | −0.2 (7) |
C7—C12—C18—C19 | −51.6 (5) | C21—C22—C23—H23 | 179.8 |
C7—C12—C18—C23 | 127.2 (4) | H22—C22—C23—C18 | 179.8 |
N13—C12—C18—C19 | 73.7 (4) | H22—C22—C23—H23 | −0.2 |
D—H···A | D—H | H···A | D···A | D—H···A |
N1—H1···Br | 0.86 | 2.46 | 3.293 (3) | 162 |
N16—H16···O11i | 0.86 | 1.86 | 2.642 (4) | 150 |
C17—H17···Brii | 0.93 | 2.58 | 3.387 (4) | 145 |
C15—H15···O11iii | 0.93 | 2.27 | 3.173 (5) | 163 |
Symmetry codes: (i) −x+1/2, −y+2, z+1/2; (ii) −x+3/2, −y+2, z+1/2; (iii) −x, y−1/2, −z+3/2. |
Experimental details
Crystal data | |
Chemical formula | C19H14F3N4O+·Br− |
Mr | 451.25 |
Crystal system, space group | Orthorhombic, P212121 |
Temperature (K) | 293 |
a, b, c (Å) | 7.058 (4), 16.212 (8), 17.029 (9) |
V (Å3) | 1949 (2) |
Z | 4 |
Radiation type | Mo Kα |
µ (mm−1) | 2.15 |
Crystal size (mm) | 0.50 × 0.30 × 0.30 |
Data collection | |
Diffractometer | Stoe Stadi-4 four-circle diffractometer |
Absorption correction | ψ scan (EMPIR; Stoe & Cie, 1992) |
Tmin, Tmax | 0.427, 0.525 |
No. of measured, independent and observed [I > 2σ(I)] reflections | 5505, 3463, 2660 |
Rint | 0.029 |
(sin θ/λ)max (Å−1) | 0.597 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.034, 0.064, 1.04 |
No. of reflections | 3463 |
No. of parameters | 289 |
No. of restraints | ? |
H-atom treatment | H-atom parameters constrained |
Δρmax, Δρmin (e Å−3) | 0.21, −0.22 |
Absolute structure | Flack (1983), 1457 Friedel pairs |
Absolute structure parameter | 0.000 (9) |
Computer programs: DIF4 (Stoe & Cie, 1992), DIF4, REDU4 (Stoe & Cie, 1992), SIR92 (Altomare et al., 1994), SHELXL97 (Sheldrick, 1997), DIAMOND (Bergerhoff, 1996), PARST (Nardelli, 1983).
D—H···A | D—H | H···A | D···A | D—H···A |
N1—H1···Br | 0.86 | 2.46 | 3.293 (3) | 162 |
N16—H16···O11i | 0.86 | 1.86 | 2.642 (4) | 150 |
C17—H17···Brii | 0.93 | 2.58 | 3.387 (4) | 145 |
C15—H15···O11iii | 0.93 | 2.27 | 3.173 (5) | 163 |
Symmetry codes: (i) −x+1/2, −y+2, z+1/2; (ii) −x+3/2, −y+2, z+1/2; (iii) −x, y−1/2, −z+3/2. |
All-trans-retinoic-acid (ATRA) is a metabolite of retinol (vitamin A) which is involved in growth and epithelial differentiation in mammals. However, the potency of ATRA is strongly attenuated by its rapid metabolism involving the stage of hydroxylation, mediated by a cytochrome dependent P-450 system (Leo et al., 1989). The P-450 system is inhibited by the title compound, (I), which leads to increased plasma levels of ATRA.
The title compound has a propeller-like conformation (Fig. 1). The triazolyl and phenyl rings form an interplanar angle of 55.8 (1)° and the dihedral angles between these rings and the quinolinone moiety are 79.85 (9) and 78.49 (9)°, respectively. The small tilt between the planes of the six-membered rings in the quinolinone moiety is 1.67 (9)°. The bromide anion is hydrogen bonded to the quinolinone N atom. The N—H···O hydrogen bonds between the protonated nitrogen of the triazolyl ring and the quinolinone O atom link the cations into infinite chains stretching along the c axis of the crystal. Weaker C—H···Br and C—H···O hydrogen bonds also contribute to the stability of the crystalline product. Details of the hydrogen bonding geometry (D—H distances were not normalized) are given in Table 1.