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The title compound, C22H17NO2, is composed of an oxoisoindoline moiety fused to a phenyl-substituted benzoxazepine ring and was designed and synthesized as a potential anxiolytic drug. The isoindolinone moiety is essentially planar and the central oxazepine ring adopts a twist-boat conformation with the phenyl group equatorial. In the two independent mol­ecules, the benzene ring of the benzoxazepine fragment makes an angle of 74.4 (1) or 86.1 (1)° with the plane of the isoindoline ring.

Supporting information

cif

Crystallographic Information File (CIF) https://doi.org/10.1107/S1600536801009898/ob6046sup1.cif
Contains datablocks global, I

hkl

Structure factor file (CIF format) https://doi.org/10.1107/S1600536801009898/ob6046Isup2.hkl
Contains datablock I

CCDC reference: 170771

Key indicators

  • Single-crystal X-ray study
  • T = 293 K
  • Mean [sigma](C-C) = 0.004 Å
  • R factor = 0.074
  • wR factor = 0.194
  • Data-to-parameter ratio = 12.9

checkCIF results

No syntax errors found

ADDSYM reports no extra symmetry








Comment top

This work is part of our continuing study aimed at designing modulators of hormonal/neurotransmitter systems as potential drugs to treat neuronal and cardiovascular disorders. Based on the recent pharmacophore/receptor model of the benzodiazepine (BDZ) receptor subtype located in the central nervous system (Huang et al., 2000), we designed the compound (4), as potential anxiolytic agent. Synthesis of the molecule (4) was achieved by a sequential reaction (Fig. 1) and led to a 5:1 diastereomeric (racemic) mixture of cis-(4a) and trans-(4 b) isomers. In order to establish the detailed stereochemistry of the two diastereomers, viz. spatial relationship between the putative pharmacophoric elements (phenyl rings and the two O atoms) which is indispensable for future molecular-modeling studies, the crystal structure determination of (4a) and (4 b) has been undertaken. We report here on the structure of the trans-(4 b) isomer.

In trans-(4 b), two independent molecules (A and B) are identical to within 4σ as far as bond distances and angles are concerned. Thus, only one molecule (A) along with the atom-numbering scheme is shown in Fig. 2. As expected, the isoindolinone ring is essentially planar. The N1—C2 bond is much shorter than the N1—C9 and N1—C18 bonds (Table 1); such N—C bond lengths resemble those typically found in cyclic amino acids (Benedetti et al., 1983), indicating that the lone-pair electrons on N1 are involved in conjugation with the adjacent carbonyl group. A similar pattern of bond distances and angles within the isoindolinone moiety has been found in the cis isomer (Lokaj et al., 2001) as well as other compounds incorporating this molecular fragment (Barrett et al., 1995; McNab et al., 1997; Khan et al., 1998).

As mentioned above, the main purpose of this structure determination was to establish the relative three-dimensional disposition of the phenyl rings and the two O atoms which are assumed to constitute the interaction pharmacophore responsible for binding of the compound to the CNS-subtype of the BDZ receptor. Obviously, the disposition of these structural elements depends primarily on the conformation of the seven-membered oxazepine ring which is the most flexible part of the molecule. A comparison of the endocyclic torsion angles for the oxazepine ring (Table 1) reveals that the ring adopts a twist-boat conformation with an approximate twofold axis passing through C9 and the midpoint of the C12—C17 bond.

The puckering parameters according to Cremer & Pople (1975) are q2 = 0.817 (4) Å, ϕ2 = 175.7 (3)° and q3 = 0.370 (4) Å, ϕ3 = 106.8 (5)° for the sequence N1A/C9A/O10A/C11A/C12A/C17A/C18A. The corresponding parameters in molecule B are q2 = 0.814 (4) Å, ϕ2 = 169.2 (3)° and q3 = 0.378 (4) Å, ϕ3 = 108.8 (6)°. The deviation from ideal C2 symmetry described by the asymmetry parameter ΔC2(C9) is 0.062 (1) (molecule A) and 0.026 (1) (molecule B) (Nardelli, 1983). Although the puckering mode of the oxazepine ring in molecules A and B is the same, the endocyclic torsion angles in the two molecules differ by up to 23σ. Another difference between molecules A and B concerns the orientation of the phenyl group (at C11) as shown by the torsion angle O10—C11—C19—C24 which is 46.3 (3)° in A and 64.0 (3)° in B. This points to the flexibility of the oxazepine ring and the shallow shape of the potential well corresponding to rotation of the phenyl group about the exocyclic C11—C19 bond. In both molecules, of course, the phenyl substituent occupies a pseudo-equatorial position. The equatorial arrangement of the phenyl group has also been observed for the cis isomer (Lokaj et al., 2001) but in the latter compound the oxazepine ring exists in a distorted C9-chair conformation. This is in line with the known fact that the equatorial orientation of bulky substituents attached to a saturated (or partially unsaturated) seven-membered ring is superior to the actual conformation of the ring, obviously due to low barriers along the pseudorotation pathway. Due to the relatively severe puckering of the central seven-membered ring, the molecules as a whole are non-planar: the two planar `ends' (viz. the isoindoline and the benzene ring of the benzoxazepine moiety) are inclined at an angle of 74.4 (1) and 86.1 (1)° in molecules A and B, respectively. A similar molecular shape has been found for the cis-isomer [bent angle 67.7 (1)°]. This implies an equivalent spatial relationship between the pharmacophoric elements in the two diastereomers and hence, based on the crystal structure data, a similar pharmacological behaviour for the two isomers is predicted.

Experimental top

The diastereomers (4a) and (4 b) were synthesized by a three-step reaction. As the first step, to bromomethylbenzophenone (1), prepared freshly from 2-methylbenzophenone (1.96 g, 0.01 mol) and N-bromosuccinimide (1.76 g, 0.01 mol), was added phthalimide (1.5 g, 0.01 mol), potassium carbonate (1.1.g, 8 mmol) and N,N-dimethylformamide (25 ml). The mixture was stirred overnight, diluted with water, extracted with diethyl ether (3 × 20 ml) and dried (magnesium sulfate). The solvent was evaporated under reduced pressure and the solid recrystallized from ethanol to give 2-(N-phthalimidomethyl)benzophenone, (2) (77% yield, m.p. 388 K). In the second step, to a solution of (2) (0.5 g, 15 mmol) in dry methanol (20 ml) at 273–283 K was added sodium borohydride (0.69 g, 30 mmol) by portions. The mixture was stirred for 2 h and monitored by TLC (dichloromethane/acetone 5:1). After 2 h, the starting material disappeared and the excess of sodium borohydride was decomposed by addition of cold water (10 ml) and 10% hydrochloric acid to neutral pH. The precipitate was separated by filtration, washed with water, dried, concentrated under reduced pressure and recrystallized from ethanol to afford a 5:1 ratio of diastereomers (3) (79% yield). Finally, compound (4) was prepared when the diols (3) (0.5 g, 1.5 mmol) were stirred in dry dichloromethane (20 ml) with a catalytic amount of p-toluenesulfonic acid for 30 min at room temperature. The solution was washed with saturated sodium hydrogen carbonate, with water, then dried and concentrated under reduced pressure. Separation of the product by flash chromatography and recrystallization from ethanol gave the corresponding 5:1 ratio of oxazepines (4a) and (4 b) (70% yield); m.p. (4a) 496 K and (4 b) 482 K. The isomers were initially characterized by IR, 1H and 13C NMR spectral analyses.

Refinement top

Although most of the H atoms were seen in a difference Fourier map, all were refined with fixed geometry, riding on their carrier atoms, with Uiso set to 1.2Ueq of the parent atom.

Computing details top

Data collection: XSCANS (Siemens, 1991); cell refinement: XSCANS; data reduction: XSCANS; program(s) used to solve structure: SHELXS97 (Sheldrick, 1997); program(s) used to refine structure: SHELXL97 (Sheldrick, 1997); molecular graphics: ORTEPII (Johnson, 1976); software used to prepare material for publication: SHELXL97.

Figures top
[Figure 1] Fig. 1. A view of the title molecule, showing the labelling of the non-H atoms. Displacement ellipsoids are shown at 30% probability level. Only molecule A is shown for clarity.
trans-5,6a-Dihydro-5-phenylisoindolo[1,2-b]benz[1,3]oxazepin-11-one top
Crystal data top
C22H17NO2Z = 4
Mr = 327.37F(000) = 688
Triclinic, P1Dx = 1.304 Mg m3
Dm = 1.30 (1) Mg m3
Dm measured by flotation in bromoform/cyclohexane
a = 10.799 (3) ÅMo Kα radiation, λ = 0.71073 Å
b = 12.113 (4) ÅCell parameters from 25 reflections
c = 13.775 (4) Åθ = 7–18°
α = 104.47 (4)°µ = 0.08 mm1
β = 99.40 (3)°T = 293 K
γ = 101.26 (5)°Prism, colourless
V = 1667.9 (9) Å30.40 × 0.30 × 0.25 mm
Data collection top
Siemens P4
diffractometer
Rint = 0.050
Radiation source: fine-focus sealed tubeθmax = 25.0°, θmin = 1.8°
Graphite monochromatorh = 112
ω/2θ scansk = 1313
6826 measured reflectionsl = 1616
5812 independent reflections3 standard reflections every 97 reflections
3954 reflections with I > 2σ(I) intensity decay: 2%
Refinement top
Refinement on F2Primary atom site location: structure-invariant direct methods
Least-squares matrix: fullSecondary atom site location: difference Fourier map
R[F2 > 2σ(F2)] = 0.074Hydrogen site location: inferred from neighbouring sites
wR(F2) = 0.194H-atom parameters constrained
S = 1.04 w = 1/[σ2(Fo2) + (0.1139P)2]
where P = (Fo2 + 2Fc2)/3
5812 reflections(Δ/σ)max = 0.001
451 parametersΔρmax = 0.35 e Å3
0 restraintsΔρmin = 0.52 e Å3
Crystal data top
C22H17NO2γ = 101.26 (5)°
Mr = 327.37V = 1667.9 (9) Å3
Triclinic, P1Z = 4
a = 10.799 (3) ÅMo Kα radiation
b = 12.113 (4) ŵ = 0.08 mm1
c = 13.775 (4) ÅT = 293 K
α = 104.47 (4)°0.40 × 0.30 × 0.25 mm
β = 99.40 (3)°
Data collection top
Siemens P4
diffractometer
Rint = 0.050
6826 measured reflections3 standard reflections every 97 reflections
5812 independent reflections intensity decay: 2%
3954 reflections with I > 2σ(I)
Refinement top
R[F2 > 2σ(F2)] = 0.0740 restraints
wR(F2) = 0.194H-atom parameters constrained
S = 1.04Δρmax = 0.35 e Å3
5812 reflectionsΔρmin = 0.52 e Å3
451 parameters
Fractional atomic coordinates and isotropic or equivalent isotropic displacement parameters (Å2) top
xyzUiso*/Ueq
N1A0.4125 (2)0.77049 (19)0.86013 (16)0.0476 (5)
C2A0.4829 (3)0.8829 (2)0.87622 (19)0.0481 (6)
O2A0.59495 (18)0.92528 (19)0.92572 (15)0.0629 (5)
C3A0.3947 (2)0.9398 (2)0.82209 (18)0.0443 (6)
C4A0.4162 (3)1.0537 (2)0.8147 (2)0.0553 (7)
H4A0.49681.10660.84260.066*
C5A0.3137 (3)1.0862 (3)0.7642 (2)0.0600 (8)
H5A0.32541.16220.75850.072*
C6A0.1944 (3)1.0070 (3)0.7220 (2)0.0583 (7)
H6A0.12681.03080.68870.070*
C7A0.1738 (3)0.8920 (3)0.72880 (19)0.0517 (7)
H7A0.09380.83840.70020.062*
C8A0.2766 (2)0.8606 (2)0.77959 (18)0.0432 (6)
C9A0.2830 (2)0.7438 (2)0.79769 (18)0.0445 (6)
H9A0.27720.68640.73180.053*
O10A0.18907 (16)0.69586 (15)0.84703 (12)0.0458 (4)
C11A0.2075 (2)0.7634 (2)0.95392 (17)0.0404 (6)
H11A0.25420.84440.96270.049*
C12A0.2895 (2)0.7115 (2)1.02437 (18)0.0415 (6)
C13A0.2557 (3)0.7041 (2)1.1161 (2)0.0526 (7)
H13A0.18310.72861.13200.063*
C14A0.3275 (3)0.6610 (3)1.1846 (2)0.0610 (8)
H14A0.30310.65661.24550.073*
C15A0.4357 (3)0.6246 (3)1.1614 (2)0.0598 (8)
H15A0.48380.59421.20590.072*
C16A0.4716 (3)0.6339 (2)1.0719 (2)0.0540 (7)
H16A0.54530.61051.05730.065*
C17A0.4011 (2)0.6774 (2)1.00205 (19)0.0449 (6)
C18A0.4527 (3)0.6849 (3)0.9070 (2)0.0544 (7)
H18A0.54660.70440.92560.065*
H18B0.42410.60800.85640.065*
C19A0.0750 (2)0.7646 (2)0.97555 (18)0.0445 (6)
C20A0.0520 (3)0.8685 (3)1.0286 (2)0.0579 (7)
H20A0.11740.93751.04840.070*
C21A0.0667 (4)0.8718 (4)1.0528 (3)0.0756 (10)
H21A0.08000.94241.08980.091*
C22A0.1644 (3)0.7718 (4)1.0224 (3)0.0800 (11)
H22A0.24440.77431.03840.096*
C23A0.1447 (3)0.6667 (4)0.9679 (3)0.0769 (10)
H23A0.21170.59870.94680.092*
C24A0.0247 (3)0.6626 (3)0.9447 (2)0.0590 (7)
H24A0.01120.59170.90850.071*
N1B0.2478 (2)0.33393 (19)0.29496 (15)0.0477 (5)
C2B0.3650 (3)0.4150 (2)0.32510 (19)0.0471 (6)
O2B0.4664 (2)0.3981 (2)0.30305 (16)0.0678 (6)
C3B0.3430 (2)0.5245 (2)0.38960 (18)0.0438 (6)
C4B0.4287 (3)0.6319 (2)0.4387 (2)0.0557 (7)
H4B0.51450.64530.43270.067*
C5B0.3835 (3)0.7192 (3)0.4974 (2)0.0655 (8)
H5B0.43970.79240.53200.079*
C6B0.2552 (3)0.6985 (3)0.5047 (2)0.0646 (8)
H6B0.22660.75840.54440.078*
C7B0.1681 (3)0.5902 (3)0.4544 (2)0.0580 (7)
H7B0.08170.57710.45890.070*
C8B0.2149 (2)0.5027 (2)0.39726 (18)0.0446 (6)
C9B0.1469 (2)0.3770 (2)0.33863 (19)0.0467 (6)
H9B0.07640.37520.28320.056*
O10B0.09768 (15)0.30679 (15)0.39956 (12)0.0456 (4)
C11B0.1990 (2)0.2913 (2)0.47483 (17)0.0401 (6)
H11B0.27330.35910.49120.048*
C12B0.2441 (2)0.1802 (2)0.43206 (18)0.0419 (6)
C13B0.2789 (3)0.1161 (2)0.4984 (2)0.0504 (7)
H13B0.27000.13980.56600.061*
C14B0.3266 (3)0.0176 (2)0.4663 (2)0.0598 (8)
H14B0.34950.02360.51220.072*
C15B0.3396 (3)0.0183 (3)0.3669 (2)0.0633 (8)
H15B0.37040.08460.34460.076*
C16B0.3068 (3)0.0444 (2)0.2996 (2)0.0564 (7)
H16B0.31620.01960.23230.068*
C17B0.2598 (2)0.1444 (2)0.33045 (19)0.0466 (6)
C18B0.2291 (3)0.2079 (2)0.2506 (2)0.0555 (7)
H18C0.28400.19500.20180.067*
H18D0.13990.17420.21300.067*
C19B0.1475 (2)0.2957 (2)0.57105 (18)0.0414 (6)
C20B0.2052 (3)0.3872 (2)0.6604 (2)0.0563 (7)
H20B0.27660.44470.66100.068*
C21B0.1577 (3)0.3935 (3)0.7483 (2)0.0746 (9)
H21B0.19750.45520.80750.090*
C22B0.0530 (3)0.3102 (3)0.7492 (2)0.0714 (9)
H22B0.02170.31500.80870.086*
C23B0.0065 (3)0.2182 (3)0.6606 (3)0.0666 (9)
H23B0.07790.16120.66060.080*
C24B0.0410 (3)0.2115 (3)0.5719 (2)0.0532 (7)
H24B0.00090.14990.51270.064*
Atomic displacement parameters (Å2) top
U11U22U33U12U13U23
N1A0.0445 (12)0.0524 (13)0.0485 (12)0.0145 (10)0.0138 (10)0.0150 (10)
C2A0.0429 (15)0.0601 (17)0.0411 (13)0.0112 (13)0.0158 (12)0.0111 (12)
O2A0.0425 (11)0.0802 (14)0.0621 (12)0.0105 (10)0.0080 (9)0.0198 (11)
C3A0.0461 (15)0.0509 (15)0.0352 (12)0.0095 (12)0.0130 (11)0.0106 (11)
C4A0.0601 (17)0.0513 (16)0.0481 (15)0.0022 (13)0.0111 (13)0.0127 (12)
C5A0.078 (2)0.0478 (16)0.0567 (17)0.0161 (15)0.0155 (15)0.0193 (13)
C6A0.0641 (19)0.0640 (19)0.0500 (15)0.0218 (16)0.0076 (14)0.0211 (14)
C7A0.0475 (15)0.0624 (18)0.0410 (14)0.0081 (13)0.0048 (12)0.0152 (12)
C8A0.0460 (14)0.0472 (14)0.0348 (12)0.0084 (12)0.0104 (11)0.0105 (10)
C9A0.0455 (14)0.0465 (14)0.0391 (12)0.0094 (11)0.0123 (11)0.0081 (11)
O10A0.0471 (10)0.0464 (10)0.0372 (9)0.0031 (8)0.0090 (8)0.0069 (7)
C11A0.0408 (13)0.0414 (13)0.0362 (12)0.0082 (11)0.0066 (10)0.0087 (10)
C12A0.0417 (14)0.0404 (13)0.0406 (13)0.0086 (11)0.0093 (11)0.0096 (10)
C13A0.0532 (16)0.0591 (17)0.0501 (15)0.0172 (13)0.0132 (13)0.0206 (13)
C14A0.070 (2)0.072 (2)0.0512 (16)0.0218 (16)0.0157 (14)0.0309 (14)
C15A0.0669 (19)0.0556 (17)0.0614 (18)0.0220 (15)0.0061 (15)0.0253 (14)
C16A0.0563 (17)0.0479 (16)0.0603 (17)0.0190 (13)0.0113 (14)0.0167 (13)
C17A0.0477 (15)0.0397 (14)0.0461 (14)0.0114 (11)0.0098 (11)0.0106 (11)
C18A0.0571 (17)0.0609 (17)0.0562 (16)0.0281 (14)0.0210 (13)0.0207 (13)
C19A0.0399 (14)0.0548 (15)0.0410 (13)0.0139 (12)0.0090 (11)0.0162 (11)
C20A0.0629 (18)0.0626 (18)0.0575 (16)0.0255 (15)0.0206 (14)0.0216 (14)
C21A0.077 (2)0.100 (3)0.073 (2)0.049 (2)0.0340 (19)0.034 (2)
C22A0.055 (2)0.133 (4)0.063 (2)0.037 (2)0.0208 (16)0.033 (2)
C23A0.0430 (17)0.112 (3)0.0627 (19)0.0047 (18)0.0076 (15)0.024 (2)
C24A0.0476 (16)0.0690 (19)0.0534 (16)0.0043 (14)0.0114 (13)0.0132 (14)
N1B0.0524 (13)0.0511 (13)0.0410 (11)0.0141 (11)0.0129 (10)0.0134 (10)
C2B0.0505 (16)0.0584 (16)0.0413 (13)0.0185 (13)0.0162 (12)0.0228 (12)
O2B0.0618 (13)0.0812 (15)0.0732 (13)0.0277 (11)0.0345 (11)0.0248 (11)
C3B0.0424 (14)0.0529 (15)0.0415 (13)0.0150 (12)0.0087 (11)0.0214 (11)
C4B0.0496 (16)0.0535 (17)0.0624 (17)0.0097 (13)0.0040 (13)0.0220 (14)
C5B0.075 (2)0.0474 (17)0.0640 (18)0.0113 (15)0.0013 (16)0.0120 (14)
C6B0.083 (2)0.0538 (18)0.0629 (18)0.0317 (17)0.0182 (16)0.0143 (14)
C7B0.0596 (18)0.0606 (18)0.0671 (18)0.0281 (15)0.0209 (14)0.0274 (15)
C8B0.0485 (15)0.0490 (15)0.0425 (13)0.0167 (12)0.0085 (11)0.0220 (11)
C9B0.0436 (14)0.0569 (16)0.0434 (13)0.0133 (12)0.0064 (11)0.0225 (12)
O10B0.0370 (9)0.0532 (10)0.0463 (9)0.0081 (8)0.0039 (7)0.0198 (8)
C11B0.0361 (13)0.0432 (14)0.0401 (12)0.0096 (11)0.0042 (10)0.0134 (10)
C12B0.0400 (13)0.0400 (13)0.0440 (13)0.0087 (11)0.0088 (11)0.0104 (11)
C13B0.0558 (16)0.0490 (15)0.0512 (15)0.0174 (13)0.0143 (13)0.0179 (12)
C14B0.0657 (19)0.0502 (16)0.073 (2)0.0222 (14)0.0204 (15)0.0252 (14)
C15B0.0665 (19)0.0448 (16)0.080 (2)0.0183 (14)0.0232 (16)0.0129 (15)
C16B0.0616 (18)0.0466 (16)0.0553 (16)0.0097 (13)0.0190 (14)0.0034 (13)
C17B0.0457 (15)0.0428 (14)0.0457 (14)0.0061 (11)0.0099 (11)0.0067 (11)
C18B0.0703 (19)0.0522 (16)0.0420 (14)0.0154 (14)0.0141 (13)0.0088 (12)
C19B0.0418 (14)0.0432 (14)0.0443 (13)0.0166 (11)0.0101 (11)0.0169 (11)
C20B0.0594 (18)0.0548 (17)0.0510 (16)0.0103 (14)0.0175 (14)0.0085 (13)
C21B0.081 (2)0.082 (2)0.0552 (18)0.0174 (19)0.0242 (17)0.0077 (16)
C22B0.077 (2)0.098 (3)0.0569 (18)0.036 (2)0.0357 (17)0.0291 (18)
C23B0.0505 (17)0.086 (2)0.079 (2)0.0190 (16)0.0273 (16)0.0420 (19)
C24B0.0457 (15)0.0601 (17)0.0538 (16)0.0090 (13)0.0134 (13)0.0180 (13)
Geometric parameters (Å, º) top
N1A—C2A1.368 (4)N1B—C2B1.370 (4)
N1A—C9A1.447 (3)N1B—C9B1.449 (3)
N1A—C18A1.449 (3)N1B—C18B1.456 (3)
C2A—O2A1.227 (3)C2B—O2B1.224 (3)
C2A—C3A1.490 (4)C2B—C3B1.486 (4)
C3A—C8A1.373 (4)C3B—C4B1.375 (4)
C3A—C4A1.386 (4)C3B—C8B1.382 (4)
C4A—C5A1.385 (4)C4B—C5B1.383 (4)
C4A—H4A0.9300C4B—H4B0.9300
C5A—C6A1.383 (4)C5B—C6B1.384 (4)
C5A—H5A0.9300C5B—H5B0.9300
C6A—C7A1.397 (4)C6B—C7B1.392 (4)
C6A—H6A0.9300C6B—H6B0.9300
C7A—C8A1.383 (4)C7B—C8B1.386 (4)
C7A—H7A0.9300C7B—H7B0.9300
C8A—C9A1.510 (4)C8B—C9B1.506 (4)
C9A—O10A1.421 (3)C9B—O10B1.427 (3)
C9A—H9A0.9800C9B—H9B0.9800
O10A—C11A1.455 (3)O10B—C11B1.454 (3)
C11A—C19A1.510 (3)C11B—C19B1.512 (3)
C11A—C12A1.537 (3)C11B—C12B1.533 (3)
C11A—H11A0.9800C11B—H11B0.9800
C12A—C13A1.390 (3)C12B—C13B1.391 (4)
C12A—C17A1.403 (3)C12B—C17B1.407 (3)
C13A—C14A1.389 (4)C13B—C14B1.391 (4)
C13A—H13A0.9300C13B—H13B0.9300
C14A—C15A1.384 (4)C14B—C15B1.369 (4)
C14A—H14A0.9300C14B—H14B0.9300
C15A—C16A1.376 (4)C15B—C16B1.381 (4)
C15A—H15A0.9300C15B—H15B0.9300
C16A—C17A1.397 (4)C16B—C17B1.399 (4)
C16A—H16A0.9300C16B—H16B0.9300
C17A—C18A1.520 (4)C17B—C18B1.522 (4)
C18A—H18A0.9700C18B—H18C0.9700
C18A—H18B0.9700C18B—H18D0.9700
C19A—C20A1.379 (4)C19B—C24B1.384 (4)
C19A—C24A1.391 (4)C19B—C20B1.388 (4)
C20A—C21A1.381 (4)C20B—C21B1.381 (4)
C20A—H20A0.9300C20B—H20B0.9300
C21A—C22A1.363 (5)C21B—C22B1.364 (5)
C21A—H21A0.9300C21B—H21B0.9300
C22A—C23A1.382 (5)C22B—C23B1.388 (5)
C22A—H22A0.9300C22B—H22B0.9300
C23A—C24A1.392 (4)C23B—C24B1.390 (4)
C23A—H23A0.9300C23B—H23B0.9300
C24A—H24A0.9300C24B—H24B0.9300
C2A—N1A—C9A114.1 (2)C2B—N1B—C9B113.4 (2)
C2A—N1A—C18A125.8 (2)C2B—N1B—C18B125.0 (2)
C9A—N1A—C18A119.9 (2)C9B—N1B—C18B119.2 (2)
O2A—C2A—N1A125.9 (3)O2B—C2B—N1B125.9 (3)
O2A—C2A—C3A128.7 (3)O2B—C2B—C3B128.0 (3)
N1A—C2A—C3A105.5 (2)N1B—C2B—C3B106.1 (2)
C8A—C3A—C4A121.5 (2)C4B—C3B—C8B121.9 (3)
C8A—C3A—C2A108.8 (2)C4B—C3B—C2B129.7 (2)
C4A—C3A—C2A129.7 (2)C8B—C3B—C2B108.3 (2)
C5A—C4A—C3A117.7 (3)C3B—C4B—C5B118.1 (3)
C5A—C4A—H4A121.1C3B—C4B—H4B121.0
C3A—C4A—H4A121.1C5B—C4B—H4B121.0
C6A—C5A—C4A120.9 (3)C4B—C5B—C6B120.4 (3)
C6A—C5A—H5A119.5C4B—C5B—H5B119.8
C4A—C5A—H5A119.5C6B—C5B—H5B119.8
C5A—C6A—C7A121.0 (3)C5B—C6B—C7B121.7 (3)
C5A—C6A—H6A119.5C5B—C6B—H6B119.2
C7A—C6A—H6A119.5C7B—C6B—H6B119.2
C8A—C7A—C6A117.6 (3)C8B—C7B—C6B117.4 (3)
C8A—C7A—H7A121.2C8B—C7B—H7B121.3
C6A—C7A—H7A121.2C6B—C7B—H7B121.3
C3A—C8A—C7A121.2 (3)C3B—C8B—C7B120.5 (3)
C3A—C8A—C9A109.6 (2)C3B—C8B—C9B109.7 (2)
C7A—C8A—C9A129.2 (2)C7B—C8B—C9B129.8 (3)
O10A—C9A—N1A111.18 (19)O10B—C9B—N1B110.8 (2)
O10A—C9A—C8A116.6 (2)O10B—C9B—C8B115.0 (2)
N1A—C9A—C8A101.9 (2)N1B—C9B—C8B102.3 (2)
O10A—C9A—H9A108.9O10B—C9B—H9B109.5
N1A—C9A—H9A108.9N1B—C9B—H9B109.5
C8A—C9A—H9A108.9C8B—C9B—H9B109.5
C9A—O10A—C11A112.93 (18)C9B—O10B—C11B112.97 (18)
O10A—C11A—C19A107.54 (19)O10B—C11B—C19B106.65 (19)
O10A—C11A—C12A109.91 (19)O10B—C11B—C12B111.68 (19)
C19A—C11A—C12A113.9 (2)C19B—C11B—C12B115.0 (2)
O10A—C11A—H11A108.5O10B—C11B—H11B107.7
C19A—C11A—H11A108.5C19B—C11B—H11B107.7
C12A—C11A—H11A108.5C12B—C11B—H11B107.7
C13A—C12A—C17A118.9 (2)C13B—C12B—C17B118.5 (2)
C13A—C12A—C11A118.6 (2)C13B—C12B—C11B118.5 (2)
C17A—C12A—C11A122.3 (2)C17B—C12B—C11B122.9 (2)
C14A—C13A—C12A121.7 (3)C14B—C13B—C12B121.7 (3)
C14A—C13A—H13A119.2C14B—C13B—H13B119.1
C12A—C13A—H13A119.2C12B—C13B—H13B119.1
C15A—C14A—C13A119.4 (3)C15B—C14B—C13B119.7 (3)
C15A—C14A—H14A120.3C15B—C14B—H14B120.2
C13A—C14A—H14A120.3C13B—C14B—H14B120.2
C16A—C15A—C14A119.4 (3)C14B—C15B—C16B119.8 (3)
C16A—C15A—H15A120.3C14B—C15B—H15B120.1
C14A—C15A—H15A120.3C16B—C15B—H15B120.1
C15A—C16A—C17A122.2 (3)C15B—C16B—C17B121.6 (3)
C15A—C16A—H16A118.9C15B—C16B—H16B119.2
C17A—C16A—H16A118.9C17B—C16B—H16B119.2
C16A—C17A—C12A118.4 (2)C16B—C17B—C12B118.8 (2)
C16A—C17A—C18A116.8 (2)C16B—C17B—C18B117.1 (2)
C12A—C17A—C18A124.8 (2)C12B—C17B—C18B124.1 (2)
N1A—C18A—C17A114.5 (2)N1B—C18B—C17B113.3 (2)
N1A—C18A—H18A108.6N1B—C18B—H18C108.9
C17A—C18A—H18A108.6C17B—C18B—H18C108.9
N1A—C18A—H18B108.6N1B—C18B—H18D108.9
C17A—C18A—H18B108.6C17B—C18B—H18D108.9
H18A—C18A—H18B107.6H18C—C18B—H18D107.7
C20A—C19A—C24A118.7 (3)C24B—C19B—C20B118.6 (2)
C20A—C19A—C11A119.7 (2)C24B—C19B—C11B121.4 (2)
C24A—C19A—C11A121.6 (2)C20B—C19B—C11B120.0 (2)
C19A—C20A—C21A121.1 (3)C21B—C20B—C19B120.6 (3)
C19A—C20A—H20A119.5C21B—C20B—H20B119.7
C21A—C20A—H20A119.5C19B—C20B—H20B119.7
C22A—C21A—C20A120.1 (3)C22B—C21B—C20B120.8 (3)
C22A—C21A—H21A119.9C22B—C21B—H21B119.6
C20A—C21A—H21A119.9C20B—C21B—H21B119.6
C21A—C22A—C23A120.1 (3)C21B—C22B—C23B119.5 (3)
C21A—C22A—H22A120.0C21B—C22B—H22B120.2
C23A—C22A—H22A120.0C23B—C22B—H22B120.2
C22A—C23A—C24A120.0 (3)C22B—C23B—C24B119.9 (3)
C22A—C23A—H23A120.0C22B—C23B—H23B120.0
C24A—C23A—H23A120.0C24B—C23B—H23B120.0
C19A—C24A—C23A119.9 (3)C19B—C24B—C23B120.6 (3)
C19A—C24A—H24A120.0C19B—C24B—H24B119.7
C23A—C24A—H24A120.0C23B—C24B—H24B119.7
C9A—N1A—C2A—O2A179.3 (2)C9B—N1B—C2B—O2B176.1 (2)
C18A—N1A—C2A—O2A6.6 (4)C18B—N1B—C2B—O2B13.9 (4)
C9A—N1A—C2A—C3A1.0 (3)C9B—N1B—C2B—C3B3.3 (3)
C18A—N1A—C2A—C3A173.1 (2)C18B—N1B—C2B—C3B165.4 (2)
O2A—C2A—C3A—C8A178.0 (3)O2B—C2B—C3B—C4B0.6 (4)
N1A—C2A—C3A—C8A1.7 (3)N1B—C2B—C3B—C4B180.0 (2)
O2A—C2A—C3A—C4A0.5 (4)O2B—C2B—C3B—C8B177.7 (3)
N1A—C2A—C3A—C4A179.2 (3)N1B—C2B—C3B—C8B1.6 (3)
C8A—C3A—C4A—C5A1.1 (4)C8B—C3B—C4B—C5B0.2 (4)
C2A—C3A—C4A—C5A176.2 (2)C2B—C3B—C4B—C5B177.9 (2)
C3A—C4A—C5A—C6A0.5 (4)C3B—C4B—C5B—C6B0.7 (4)
C4A—C5A—C6A—C7A0.3 (4)C4B—C5B—C6B—C7B0.2 (5)
C5A—C6A—C7A—C8A0.4 (4)C5B—C6B—C7B—C8B0.9 (4)
C4A—C3A—C8A—C7A0.9 (4)C4B—C3B—C8B—C7B0.9 (4)
C2A—C3A—C8A—C7A176.8 (2)C2B—C3B—C8B—C7B179.4 (2)
C4A—C3A—C8A—C9A178.7 (2)C4B—C3B—C8B—C9B178.0 (2)
C2A—C3A—C8A—C9A3.6 (3)C2B—C3B—C8B—C9B0.5 (3)
C6A—C7A—C8A—C3A0.2 (4)C6B—C7B—C8B—C3B1.4 (4)
C6A—C7A—C8A—C9A179.4 (2)C6B—C7B—C8B—C9B177.2 (2)
C2A—N1A—C9A—O10A127.8 (2)C2B—N1B—C9B—O10B119.5 (2)
C18A—N1A—C9A—O10A46.6 (3)C18B—N1B—C9B—O10B43.7 (3)
C2A—N1A—C9A—C8A3.0 (3)C2B—N1B—C9B—C8B3.5 (3)
C18A—N1A—C9A—C8A171.5 (2)C18B—N1B—C9B—C8B166.8 (2)
C3A—C8A—C9A—O10A125.1 (2)C3B—C8B—C9B—O10B117.9 (2)
C7A—C8A—C9A—O10A55.3 (3)C7B—C8B—C9B—O10B60.8 (3)
C3A—C8A—C9A—N1A3.9 (3)C3B—C8B—C9B—N1B2.3 (2)
C7A—C8A—C9A—N1A176.5 (2)C7B—C8B—C9B—N1B179.0 (2)
N1A—C9A—O10A—C11A47.9 (3)N1B—C9B—O10B—C11B51.1 (3)
C8A—C9A—O10A—C11A68.3 (3)C8B—C9B—O10B—C11B64.3 (3)
C9A—O10A—C11A—C19A141.9 (2)C9B—O10B—C11B—C19B141.8 (2)
C9A—O10A—C11A—C12A93.7 (2)C9B—O10B—C11B—C12B91.7 (2)
O10A—C11A—C12A—C13A139.5 (2)O10B—C11B—C12B—C13B144.5 (2)
C19A—C11A—C12A—C13A18.7 (3)C19B—C11B—C12B—C13B22.8 (3)
O10A—C11A—C12A—C17A44.1 (3)O10B—C11B—C12B—C17B39.8 (3)
C19A—C11A—C12A—C17A164.9 (2)C19B—C11B—C12B—C17B161.5 (2)
C17A—C12A—C13A—C14A1.8 (4)C17B—C12B—C13B—C14B1.0 (4)
C11A—C12A—C13A—C14A178.3 (2)C11B—C12B—C13B—C14B176.9 (2)
C12A—C13A—C14A—C15A0.2 (4)C12B—C13B—C14B—C15B0.2 (4)
C13A—C14A—C15A—C16A1.2 (4)C13B—C14B—C15B—C16B0.8 (5)
C14A—C15A—C16A—C17A1.0 (4)C14B—C15B—C16B—C17B0.2 (5)
C15A—C16A—C17A—C12A0.6 (4)C15B—C16B—C17B—C12B1.0 (4)
C15A—C16A—C17A—C18A179.0 (2)C15B—C16B—C17B—C18B178.9 (3)
C13A—C12A—C17A—C16A1.9 (4)C13B—C12B—C17B—C16B1.5 (4)
C11A—C12A—C17A—C16A178.3 (2)C11B—C12B—C17B—C16B177.3 (2)
C13A—C12A—C17A—C18A177.6 (2)C13B—C12B—C17B—C18B178.4 (2)
C11A—C12A—C17A—C18A1.2 (4)C11B—C12B—C17B—C18B2.6 (4)
C2A—N1A—C18A—C17A96.5 (3)C2B—N1B—C18B—C17B79.7 (3)
C9A—N1A—C18A—C17A77.2 (3)C9B—N1B—C18B—C17B81.5 (3)
C16A—C17A—C18A—N1A156.1 (2)C16B—C17B—C18B—N1B149.4 (2)
C12A—C17A—C18A—N1A23.5 (4)C12B—C17B—C18B—N1B30.5 (4)
O10A—C11A—C19A—C20A134.8 (2)O10B—C11B—C19B—C24B64.0 (3)
C12A—C11A—C19A—C20A103.2 (3)C12B—C11B—C19B—C24B60.4 (3)
O10A—C11A—C19A—C24A46.3 (3)O10B—C11B—C19B—C20B114.4 (2)
C12A—C11A—C19A—C24A75.8 (3)C12B—C11B—C19B—C20B121.1 (3)
C24A—C19A—C20A—C21A1.3 (4)C24B—C19B—C20B—C21B0.3 (4)
C11A—C19A—C20A—C21A177.7 (3)C11B—C19B—C20B—C21B178.8 (3)
C19A—C20A—C21A—C22A1.3 (5)C19B—C20B—C21B—C22B0.1 (5)
C20A—C21A—C22A—C23A0.4 (5)C20B—C21B—C22B—C23B0.1 (5)
C21A—C22A—C23A—C24A0.5 (5)C21B—C22B—C23B—C24B0.1 (5)
C22A—C23A—C24A—C19A0.6 (5)C20B—C19B—C24B—C23B0.3 (4)
C20A—C19A—C24A—C23A0.3 (4)C11B—C19B—C24B—C23B178.8 (2)
C11A—C19A—C24A—C23A178.6 (2)C22B—C23B—C24B—C19B0.1 (4)

Experimental details

Crystal data
Chemical formulaC22H17NO2
Mr327.37
Crystal system, space groupTriclinic, P1
Temperature (K)293
a, b, c (Å)10.799 (3), 12.113 (4), 13.775 (4)
α, β, γ (°)104.47 (4), 99.40 (3), 101.26 (5)
V3)1667.9 (9)
Z4
Radiation typeMo Kα
µ (mm1)0.08
Crystal size (mm)0.40 × 0.30 × 0.25
Data collection
DiffractometerSiemens P4
diffractometer
Absorption correction
No. of measured, independent and
observed [I > 2σ(I)] reflections
6826, 5812, 3954
Rint0.050
(sin θ/λ)max1)0.595
Refinement
R[F2 > 2σ(F2)], wR(F2), S 0.074, 0.194, 1.04
No. of reflections5812
No. of parameters451
H-atom treatmentH-atom parameters constrained
Δρmax, Δρmin (e Å3)0.35, 0.52

Computer programs: XSCANS (Siemens, 1991), XSCANS, SHELXS97 (Sheldrick, 1997), SHELXL97 (Sheldrick, 1997), ORTEPII (Johnson, 1976), SHELXL97.

Selected geometric parameters (Å, º) top
N1A—C2A1.368 (4)N1B—C2B1.370 (4)
N1A—C9A1.447 (3)N1B—C9B1.449 (3)
N1A—C18A1.449 (3)N1B—C18B1.456 (3)
C2A—O2A1.227 (3)C2B—O2B1.224 (3)
C2A—C3A1.490 (4)C2B—C3B1.486 (4)
C3A—C8A1.373 (4)C3B—C8B1.382 (4)
C8A—C9A1.510 (4)C8B—C9B1.506 (4)
C9A—O10A1.421 (3)C9B—O10B1.427 (3)
O10A—C11A1.455 (3)O10B—C11B1.454 (3)
C11A—C19A1.510 (3)C11B—C19B1.512 (3)
C11A—C12A1.537 (3)C11B—C12B1.533 (3)
C12A—C17A1.403 (3)C12B—C17B1.407 (3)
C17A—C18A1.520 (4)C17B—C18B1.522 (4)
C2A—N1A—C9A114.1 (2)C2B—N1B—C9B113.4 (2)
C2A—N1A—C18A125.8 (2)C2B—N1B—C18B125.0 (2)
C9A—N1A—C18A119.9 (2)C9B—N1B—C18B119.2 (2)
O2A—C2A—N1A125.9 (3)O2B—C2B—N1B125.9 (3)
O2A—C2A—C3A128.7 (3)O2B—C2B—C3B128.0 (3)
N1A—C2A—C3A105.5 (2)N1B—C2B—C3B106.1 (2)
O10A—C9A—N1A111.18 (19)O10B—C9B—N1B110.8 (2)
O10A—C9A—C8A116.6 (2)O10B—C9B—C8B115.0 (2)
N1A—C9A—C8A101.9 (2)N1B—C9B—C8B102.3 (2)
C9A—O10A—C11A112.93 (18)C9B—O10B—C11B112.97 (18)
C18A—N1A—C9A—O10A46.6 (3)C18B—N1B—C9B—O10B43.7 (3)
N1A—C9A—O10A—C11A47.9 (3)N1B—C9B—O10B—C11B51.1 (3)
C9A—O10A—C11A—C12A93.7 (2)C9B—O10B—C11B—C12B91.7 (2)
O10A—C11A—C12A—C17A44.1 (3)O10B—C11B—C12B—C17B39.8 (3)
C11A—C12A—C17A—C18A1.2 (4)C11B—C12B—C17B—C18B2.6 (4)
C9A—N1A—C18A—C17A77.2 (3)C9B—N1B—C18B—C17B81.5 (3)
C12A—C17A—C18A—N1A23.5 (4)C12B—C17B—C18B—N1B30.5 (4)
 

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