Supporting information
Crystallographic Information File (CIF) https://doi.org/10.1107/S0108270100014943/qa0397sup1.cif | |
Structure factor file (CIF format) https://doi.org/10.1107/S0108270100014943/qa0397Isup2.hkl |
CCDC reference: 156206
Lansaprazole was prepared according to the method of Prous & Castaner (1989). Crystals suitable for X-ray diffraction were grown from a solution in acetonitrile.
The H atom of the benzimidazole NH group was refined [N—H = 0.79 (3) Å]. All other H atoms were refined as riding on their carrier atoms (C—H 0.87–1.00 Å).
Data collection: MSC/AFC Diffractometer Control Software (Molecular Structure Corporation, 1993); cell refinement: MSC/AFC Diffractometer Control Software; data reduction: TEXSAN (Molecular Structure Corporation, 1995); program(s) used to solve structure: SIR92 (Altomare et al. 1993); program(s) used to refine structure: TEXSAN; software used to prepare material for publication: TEXSAN.
C16H14F3N3O2S | F(000) = 760.00 |
Mr = 369.36 | Dx = 1.508 Mg m−3 |
Monoclinic, P21/c | Cu Kα radiation, λ = 1.5418 Å |
a = 15.870 (1) Å | Cell parameters from 25 reflections |
b = 7.3481 (8) Å | θ = 32.5–48.2° |
c = 14.262 (1) Å | µ = 2.22 mm−1 |
β = 102.032 (5)° | T = 298 K |
V = 1626.7 (2) Å3 | Block, colourless |
Z = 4 | 0.50 × 0.30 × 0.30 mm |
Rigaku AFC-7S diffractometer | 2853 reflections with I > 0.1σ(I) |
Radiation source: X-ray tube | Rint = 0.021 |
Graphite monochromator | θmax = 70.1°, θmin = 2.9° |
ω–2θ scans | h = −19→18 |
Absorption correction: ψ scan (North et al., 1968) | k = −8→0 |
Tmin = 0.365, Tmax = 0.513 | l = 0→16 |
3347 measured reflections | 3 standard reflections every 150 reflections |
2961 independent reflections | intensity decay: 0.1% |
Refinement on F | 0 constraints |
Least-squares matrix: full | H atoms treated by a mixture of independent and constrained refinement |
R[F2 > 2σ(F2)] = 0.047 | Weighting scheme based on measured s.u.'s w = 1/[σ2(Fo) + 0.00016|Fo|2] |
wR(F2) = 0.077 | (Δ/σ)max = 0.0004 |
S = 1.92 | Δρmax = 0.25 e Å−3 |
2853 reflections | Δρmin = −0.38 e Å−3 |
231 parameters | Extinction correction: Zachariasen (1967) |
0 restraints | Extinction coefficient: 6E-6 (1) |
C16H14F3N3O2S | V = 1626.7 (2) Å3 |
Mr = 369.36 | Z = 4 |
Monoclinic, P21/c | Cu Kα radiation |
a = 15.870 (1) Å | µ = 2.22 mm−1 |
b = 7.3481 (8) Å | T = 298 K |
c = 14.262 (1) Å | 0.50 × 0.30 × 0.30 mm |
β = 102.032 (5)° |
Rigaku AFC-7S diffractometer | 2853 reflections with I > 0.1σ(I) |
Absorption correction: ψ scan (North et al., 1968) | Rint = 0.021 |
Tmin = 0.365, Tmax = 0.513 | 3 standard reflections every 150 reflections |
3347 measured reflections | intensity decay: 0.1% |
2961 independent reflections |
R[F2 > 2σ(F2)] = 0.047 | 0 restraints |
wR(F2) = 0.077 | H atoms treated by a mixture of independent and constrained refinement |
S = 1.92 | Δρmax = 0.25 e Å−3 |
2853 reflections | Δρmin = −0.38 e Å−3 |
231 parameters |
Experimental. The scan width was (0.94 + 0.14tanθ)° with an ω scan speed of 16° per minute (up to 5 scans to achieve I/σ(I) > 15). Stationary background counts were recorded at each end of the scan, and the scan time:background time ratio was 2:1. |
x | y | z | Uiso*/Ueq | ||
S1 | −0.01220 (3) | −0.11105 (6) | 0.38378 (4) | 0.0457 (2) | |
F1 | −0.4889 (1) | −0.3803 (3) | 0.1126 (2) | 0.1220 (9) | |
F2 | −0.5158 (1) | −0.5022 (4) | 0.2375 (2) | 0.1130 (8) | |
F3 | −0.5293 (1) | −0.6580 (3) | 0.1113 (2) | 0.1161 (8) | |
O1 | −0.34187 (9) | −0.4545 (2) | 0.2422 (1) | 0.0549 (4) | |
O2 | −0.0488 (1) | −0.1399 (2) | 0.2797 (1) | 0.0598 (5) | |
N1 | 0.1547 (1) | −0.1606 (2) | 0.4662 (1) | 0.0436 (4) | |
N2 | 0.0991 (1) | −0.4009 (2) | 0.3781 (1) | 0.0427 (4) | |
N3 | −0.0876 (1) | −0.5425 (2) | 0.3756 (1) | 0.0424 (4) | |
C1 | 0.1840 (1) | −0.4419 (3) | 0.4137 (1) | 0.0422 (5) | |
C2 | 0.2341 (2) | −0.5932 (3) | 0.4013 (2) | 0.0590 (7) | |
C3 | 0.3193 (2) | −0.5869 (4) | 0.4475 (2) | 0.0682 (8) | |
C4 | 0.3539 (1) | −0.4390 (4) | 0.5037 (2) | 0.0659 (7) | |
C5 | 0.3046 (1) | −0.2915 (4) | 0.5157 (2) | 0.0557 (6) | |
C6 | 0.2179 (1) | −0.2926 (3) | 0.4684 (1) | 0.0423 (5) | |
C7 | 0.0869 (1) | −0.2343 (3) | 0.4121 (1) | 0.0402 (5) | |
C8 | −0.0767 (1) | −0.2506 (3) | 0.4503 (1) | 0.0428 (5) | |
C9 | −0.1294 (1) | −0.3870 (2) | 0.3856 (1) | 0.0366 (5) | |
C10 | −0.2141 (1) | −0.3500 (3) | 0.3396 (1) | 0.0390 (5) | |
C11 | −0.2576 (1) | −0.4901 (3) | 0.2835 (1) | 0.0403 (5) | |
C12 | −0.2165 (1) | −0.6515 (3) | 0.2725 (2) | 0.0451 (5) | |
C13 | −0.1313 (1) | −0.6696 (3) | 0.3198 (1) | 0.0453 (5) | |
C14 | −0.3902 (2) | −0.5970 (3) | 0.1906 (2) | 0.0628 (7) | |
C15 | −0.4804 (2) | −0.5328 (5) | 0.1633 (2) | 0.0740 (9) | |
C16 | −0.2583 (1) | −0.1721 (3) | 0.3493 (2) | 0.0522 (6) | |
H1 | 0.056 (2) | −0.446 (4) | 0.349 (2) | 0.060 (8)* | |
H2 | 0.2071 | −0.6947 | 0.3648 | 0.082* | |
H3 | 0.3546 | −0.6765 | 0.4429 | 0.077* | |
H4 | 0.4149 | −0.4425 | 0.5381 | 0.080* | |
H5 | 0.3310 | −0.1886 | 0.5560 | 0.070* | |
H6 | −0.0385 | −0.3118 | 0.5012 | 0.040* | |
H7 | −0.1133 | −0.1686 | 0.4720 | 0.045* | |
H8 | −0.2448 | −0.7512 | 0.2293 | 0.056* | |
H9 | −0.0986 | −0.7799 | 0.3126 | 0.047* | |
H10 | −0.3696 | −0.6281 | 0.1327 | 0.090* | |
H11 | −0.3911 | −0.6980 | 0.2225 | 0.070* | |
H12 | −0.3072 | −0.1531 | 0.3005 | 0.084* | |
H13 | −0.2275 | −0.0736 | 0.3340 | 0.127* | |
H14 | −0.2687 | −0.1564 | 0.4113 | 0.127* |
U11 | U22 | U33 | U12 | U13 | U23 | |
S1 | 0.0355 (3) | 0.0317 (3) | 0.0636 (4) | 0.0007 (2) | −0.0040 (2) | 0.0060 (2) |
F1 | 0.067 (1) | 0.124 (2) | 0.152 (2) | −0.005 (1) | −0.031 (1) | 0.044 (2) |
F2 | 0.061 (1) | 0.147 (2) | 0.138 (2) | −0.003 (1) | 0.036 (1) | −0.029 (2) |
F3 | 0.0566 (9) | 0.132 (2) | 0.144 (2) | −0.030 (1) | −0.016 (1) | −0.043 (1) |
O1 | 0.0352 (8) | 0.0482 (9) | 0.073 (1) | −0.0013 (6) | −0.0066 (7) | −0.0101 (7) |
O2 | 0.0475 (8) | 0.066 (1) | 0.0575 (9) | −0.0044 (7) | −0.0080 (7) | 0.0238 (8) |
N1 | 0.0343 (8) | 0.0416 (9) | 0.0520 (9) | −0.0026 (7) | 0.0021 (7) | −0.0031 (7) |
N2 | 0.0390 (9) | 0.0369 (9) | 0.0475 (9) | −0.0019 (6) | −0.0019 (7) | −0.0018 (7) |
N3 | 0.0364 (8) | 0.0385 (9) | 0.0509 (9) | 0.0053 (6) | 0.0060 (7) | −0.0012 (7) |
C1 | 0.041 (1) | 0.044 (1) | 0.041 (1) | 0.0038 (8) | 0.0064 (8) | 0.0026 (8) |
C2 | 0.059 (1) | 0.052 (1) | 0.065 (1) | 0.014 (1) | 0.013 (1) | −0.005 (1) |
C3 | 0.056 (1) | 0.072 (2) | 0.079 (2) | 0.027 (1) | 0.018 (1) | 0.008 (1) |
C4 | 0.038 (1) | 0.084 (2) | 0.073 (2) | 0.011 (1) | 0.007 (1) | 0.008 (1) |
C5 | 0.034 (1) | 0.070 (1) | 0.060 (1) | −0.003 (1) | 0.0029 (9) | −0.001 (1) |
C6 | 0.0345 (9) | 0.046 (1) | 0.045 (1) | 0.0009 (8) | 0.0060 (8) | 0.0022 (8) |
C7 | 0.0347 (9) | 0.0361 (9) | 0.046 (1) | −0.0016 (7) | 0.0005 (7) | 0.0017 (8) |
C8 | 0.0346 (9) | 0.041 (1) | 0.049 (1) | 0.0032 (7) | 0.0003 (8) | −0.0050 (8) |
C9 | 0.0302 (9) | 0.0341 (9) | 0.0441 (9) | 0.0026 (7) | 0.0047 (7) | 0.0016 (7) |
C10 | 0.0310 (9) | 0.0344 (9) | 0.050 (1) | 0.0014 (7) | 0.0048 (8) | −0.0014 (8) |
C11 | 0.0320 (9) | 0.041 (1) | 0.046 (1) | −0.0006 (7) | 0.0051 (7) | −0.0001 (8) |
C12 | 0.043 (1) | 0.0357 (9) | 0.055 (1) | −0.0022 (8) | 0.0059 (8) | −0.0075 (8) |
C13 | 0.043 (1) | 0.036 (1) | 0.056 (1) | 0.0080 (8) | 0.0083 (9) | −0.0029 (8) |
C14 | 0.045 (1) | 0.060 (1) | 0.079 (2) | −0.010 (1) | 0.001 (1) | −0.016 (1) |
C15 | 0.043 (1) | 0.082 (2) | 0.089 (2) | −0.012 (1) | −0.004 (1) | −0.008 (2) |
C16 | 0.040 (1) | 0.039 (1) | 0.072 (1) | 0.0098 (8) | 0.0015 (9) | −0.007 (1) |
S1—O2 | 1.493 (2) | C4—C5 | 1.367 (4) |
S1—C7 | 1.787 (2) | C4—H4 | 0.99 |
S1—C8 | 1.845 (2) | C5—C6 | 1.401 (3) |
F1—C15 | 1.325 (4) | C5—H5 | 0.99 |
F2—C15 | 1.317 (4) | C8—C9 | 1.495 (2) |
F3—C15 | 1.326 (3) | C8—H6 | 0.96 |
O1—C11 | 1.369 (2) | C8—H7 | 0.93 |
O1—C14 | 1.411 (3) | C9—C10 | 1.394 (2) |
N1—C6 | 1.391 (3) | C10—C11 | 1.395 (3) |
N1—C7 | 1.304 (2) | C10—C16 | 1.503 (3) |
N2—C1 | 1.371 (2) | C11—C12 | 1.378 (3) |
N2—C7 | 1.345 (3) | C12—C13 | 1.385 (3) |
N2—H1 | 0.79 (3) | C12—H8 | 1.00 |
N3—C9 | 1.344 (2) | C13—H9 | 0.98 |
N3—C13 | 1.325 (3) | C14—C15 | 1.481 (4) |
C1—C2 | 1.400 (3) | C14—H10 | 0.98 |
C1—C6 | 1.389 (3) | C14—H11 | 0.87 |
C2—C3 | 1.376 (4) | C16—H12 | 0.94 |
C2—H2 | 0.96 | C16—H13 | 0.93 |
C3—C4 | 1.394 (4) | C16—H14 | 0.94 |
C3—H3 | 0.88 | ||
F1···F3i | 3.278 (3) | N1···N3vii | 3.462 (2) |
F1···F2ii | 3.497 (4) | N1···C8viii | 3.563 (3) |
F1···C5iii | 3.515 (3) | N2···C13vi | 3.423 (3) |
F1···C4iii | 3.540 (4) | N2···N3vii | 3.580 (2) |
F2···F3ii | 3.304 (4) | N3···C7vii | 3.442 (2) |
F2···C14ii | 3.575 (3) | N3···C8vii | 3.546 (2) |
F3···C3iv | 3.522 (3) | N3···C6vii | 3.551 (2) |
F3···C16v | 3.532 (3) | C1···C9vii | 3.399 (3) |
O2···N2vi | 2.835 (2) | C1···C12vi | 3.528 (3) |
O2···C1vi | 3.443 (2) | C5···C11vii | 3.496 (3) |
O2···C13vi | 3.453 (3) | C6···C13vii | 3.580 (3) |
O2···N3vi | 3.478 (2) | C6···C12vi | 3.585 (3) |
O2···C2vi | 3.502 (3) | C7···C13vi | 3.554 (3) |
N1···C13vii | 3.388 (3) | ||
O2—S1—C7 | 107.10 (9) | C2—C3—H3 | 121.3 |
O2—S1—C8 | 106.88 (9) | C4—C3—H3 | 116.6 |
C7—S1—C8 | 99.11 (9) | C3—C4—C5 | 121.6 (2) |
C11—O1—C14 | 117.3 (2) | C3—C4—H4 | 119.4 |
C6—N1—C7 | 103.0 (2) | C5—C4—H4 | 119.0 |
C1—N2—C7 | 105.7 (2) | C4—C5—C6 | 117.7 (2) |
C1—N2—H1 | 141 (2) | C4—C5—H5 | 119.7 |
C7—N2—H1 | 113 (2) | C6—C5—H5 | 122.5 |
C9—N3—C13 | 117.1 (2) | N1—C6—C1 | 110.2 (2) |
N2—C1—C2 | 132.0 (2) | N1—C6—C5 | 129.7 (2) |
N2—C1—C6 | 105.7 (2) | C1—C6—C5 | 120.1 (2) |
C2—C1—C6 | 122.3 (2) | S1—C7—N1 | 120.1 (1) |
C1—C2—C3 | 116.1 (2) | S1—C7—N2 | 124.5 (1) |
C1—C2—H2 | 119.1 | N1—C7—N2 | 115.4 (2) |
C3—C2—H2 | 124.7 | S1—C8—C9 | 110.8 (1) |
C2—C3—C4 | 122.1 (2) |
Symmetry codes: (i) −x−1, −y−1, −z; (ii) −x−1, y+1/2, −z+1/2; (iii) x−1, −y−1/2, z−1/2; (iv) x−1, −y−3/2, z−1/2; (v) −x−1, y−1/2, −z+1/2; (vi) −x, y+1/2, −z+1/2; (vii) −x, −y−1, −z+1; (viii) −x, −y, −z+1. |
Experimental details
Crystal data | |
Chemical formula | C16H14F3N3O2S |
Mr | 369.36 |
Crystal system, space group | Monoclinic, P21/c |
Temperature (K) | 298 |
a, b, c (Å) | 15.870 (1), 7.3481 (8), 14.262 (1) |
β (°) | 102.032 (5) |
V (Å3) | 1626.7 (2) |
Z | 4 |
Radiation type | Cu Kα |
µ (mm−1) | 2.22 |
Crystal size (mm) | 0.50 × 0.30 × 0.30 |
Data collection | |
Diffractometer | Rigaku AFC-7S diffractometer |
Absorption correction | ψ scan (North et al., 1968) |
Tmin, Tmax | 0.365, 0.513 |
No. of measured, independent and observed [I > 0.1σ(I)] reflections | 3347, 2961, 2853 |
Rint | 0.021 |
(sin θ/λ)max (Å−1) | 0.610 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.047, 0.077, 1.92 |
No. of reflections | 2853 |
No. of parameters | 231 |
H-atom treatment | H atoms treated by a mixture of independent and constrained refinement |
Δρmax, Δρmin (e Å−3) | 0.25, −0.38 |
Computer programs: MSC/AFC Diffractometer Control Software (Molecular Structure Corporation, 1993), MSC/AFC Diffractometer Control Software, TEXSAN (Molecular Structure Corporation, 1995), SIR92 (Altomare et al. 1993), TEXSAN.
S1—O2 | 1.493 (2) | C1—C2 | 1.400 (3) |
S1—C7 | 1.787 (2) | C1—C6 | 1.389 (3) |
S1—C8 | 1.845 (2) | C2—C3 | 1.376 (4) |
F1—C15 | 1.325 (4) | C3—C4 | 1.394 (4) |
F2—C15 | 1.317 (4) | C4—C5 | 1.367 (4) |
F3—C15 | 1.326 (3) | C5—C6 | 1.401 (3) |
O1—C11 | 1.369 (2) | C8—C9 | 1.495 (2) |
O1—C14 | 1.411 (3) | C9—C10 | 1.394 (2) |
N1—C6 | 1.391 (3) | C10—C11 | 1.395 (3) |
N1—C7 | 1.304 (2) | C10—C16 | 1.503 (3) |
N2—C1 | 1.371 (2) | C11—C12 | 1.378 (3) |
N2—C7 | 1.345 (3) | C12—C13 | 1.385 (3) |
N3—C9 | 1.344 (2) | C14—C15 | 1.481 (4) |
N3—C13 | 1.325 (3) | ||
O2—S1—C7 | 107.10 (9) | C2—C3—C4 | 122.1 (2) |
O2—S1—C8 | 106.88 (9) | C3—C4—C5 | 121.6 (2) |
C7—S1—C8 | 99.11 (9) | C4—C5—C6 | 117.7 (2) |
C11—O1—C14 | 117.3 (2) | N1—C6—C1 | 110.2 (2) |
C6—N1—C7 | 103.0 (2) | N1—C6—C5 | 129.7 (2) |
C1—N2—C7 | 105.7 (2) | C1—C6—C5 | 120.1 (2) |
C9—N3—C13 | 117.1 (2) | S1—C7—N1 | 120.1 (1) |
N2—C1—C2 | 132.0 (2) | S1—C7—N2 | 124.5 (1) |
N2—C1—C6 | 105.7 (2) | N1—C7—N2 | 115.4 (2) |
C2—C1—C6 | 122.3 (2) | S1—C8—C9 | 110.8 (1) |
C1—C2—C3 | 116.1 (2) |
The molecule of lansoprazole, (I), does not takes an extended form as found in omeprazole (Ohishi et al., 1989). The torsion angle C7—S1—C8—C9 of −96.0 (2)° contrasts with its value of 179° in omeprazole. This conformation facilitates intramolecular N—H···N hydrogen bonding [N2···N3 = 3.132 (2) Å, H···N3 = 2.49 Å and N2—H···N3 = 139°] between the benzimidazole and pyridine rings. This hydrogen-bond interaction was not found in omeprazole. The dihedral angle between the benzimidazole and pyridine rings is 4.96°, whereas it is 30° in omeprazole. The two molecules which are related by twofold screw axis form an intermolecular N—H···O hydrogen bond [N2···O2(-x,y − 1/2,-z + 1/2) = 2.835 (2) Å, H···O = 2.31 Å and N—H···O = 125°]. This results in a chain of molecules along the b direction, while omeprazole forms a cyclic dimer about a centre of symmetry. Stacking interaction between the aromatic rings with a spacing of 3.6 Å confers further stability to the lattice. The average interplanar spacing between pyridine and benzimidazole is 3.4 Å in lansoprazole, while it is 4.13 Å in omeprazole. \scheme