research communications
R,5S,6R)-6-azido-5-benzyloxy-3,3,4-trifluoroazepan-1-ium 2,2,2-trifluoroacetate from synchrotron data
of (4aDepartment of Chemistry and Biomolecular Sciences, Macquarie University, Sydney, NSW 2109, Australia, and bMark Wainwright Analytical Centre, The University of New South Wales, Sydney, 2052 NSW, Australia
*Correspondence e-mail: fei.liu@mq.edu.au
The structure of the title compound, C15H16F6N4O3, was determined using synchrotron radiation on an extremely small crystal (0.015 × 0.01 × 0.01 mm). Although the diffraction was weak, leading to high residuals and a poor data-to-parameter ratio, the data allowed ready solution and to reveal the entire structure. The solid-state structure is in accordance with the assigned based on that of the known starting material. The compound comprises a highly substituted seven-membered N-heterocyclic cation and a trifluoromethanesulfonate counter-anion. The title compound crystallizes with two independent cations (A and B) and anions (C and D) in the Two geminal F atoms, a single F atom, a benzyl ether and an azide group are substituted on consecutive C atoms between the NH2 and CH2 units of the azepan-1-ium ring system. The seven-membered rings adopt different conformations with the principal differences occurring in the CF2CHFCH2 segments of the ring systems. The geminal F atoms on the quaternary C atom exhibit essentially identical bond angles [109 (2) and 106 (2)°] in the two independent molecules. The two molecules associate as a dimeric unit via two C—H⋯F interactions. An extensive series of N—H⋯O, N—H⋯F, C—H⋯O, C—H⋯N, C—H⋯F and C—H⋯π contacts generate a three-dimensional network with cations and anions linked into ABCD repeat columns along a.
Keywords: crystal structure; azepane; fluorination; fluorine gauche effect; hydrogen bonding.
CCDC reference: 1431203
1. Chemical context
Fluorine is virtually absent in naturally occurring bioactive molecules. However, about 20% of pharmaceuticals and 30% of agrochemicals have at least one fluorine atom (Müller et al., 2007; Isanbor & O'Hagan, 2006). Because fluorine is the most electronegative atom, it is small and forms very strong C—F bonds. The replacement of hydrogen by the bioisosteric fluorine in pharmacophores can lead to improved physical, chemical and biological properties (Ritter, 2012; Bégué & Bonnet-Delpon, 2006; Kirk, 2006).
Substituted azepane rings are prevalent in many bioactive natural compounds (Wipf & Spencer, 2005; Núñez-Villanueva et al., 2011). Recently, substituted azepane rings and related compounds (iminocyclitols or iminosugars) have attracted considerable attention from medicinal chemists because of their great potential as glycosidase inhibitors (Stütz, 1999) and antidiabetic (Painter et al., 2004), anticancer (Zitzmann et al., 1999) and antiviral agents (Laver et al., 1999) and are also effective against HIV (Sinnott, 1990). The conformational control of such flexible ring structures is important to their bioactivity.
We have previously reported stereospecific deoxyfluorination reactions of substituted seven-membered N-heterocycles such as azepanes (Patel & Liu, 2013, 2015; Patel et al., 2013, 2014). The fluorine atoms that were added were found to regulate the conformational preferences of the N-heterocycle rings, and these fluorine-directed conformational changes were analysed by NMR techniques in solution in conjunction with computational modelling. Solution conformation analysis of the trifluorinated azepane was found to be difficult, and its direct solid-state structural analysis was also not feasible without having to add various substituents (Patel et al., 2014). Incorporation of benzyloxy and azide substituents in the 5- and 6-positions of the seven-membered ring led to crystal formation. However, the crystals were extremely small (0.015 × 0.01 × 0.01 mm) and diffraction data were obtained on the title trifluorinated azepane compound, C15H16F6N4O3 (1), directly using synchrotron radiation.
2. Structural commentary
The compound crystallizes in a P21) with two sets of cations and anions (molecule A and B) in the Each cation has the same stereochemistry. An ORTEP view of the cation in molecule A, Fig. 1, depicts the and atom-labelling scheme. The B cation and anion are labelled similarly but with trailing B characters after the atom numbers. The was assigned based on that of the known starting material.
(monoclinic,An alternative ORTEP view, Fig. 2, shows the with association between A and B molecules via two C—H⋯F interactions to form dimers. The is completed by the two triflate anions C and D. These are variously linked in an A to C and B to D fashion by N—H⋯O, N—H⋯F, C—H⋯O and C—H⋯F hydrogen bonds, Table 1.
The two molecules differ significantly in their seven-membered ring conformations, in particular around C2 and C3 with significantly different torsion angles, Fig. 3, where the molecules are involved in making dimeric contacts. Torsion angles within the two rings are shown in Fig. 3.
3. Ring conformation analysis
A computational analysis of ring conformations of compound (1) was carried out using protocols reported earlier (Patel et al., 2013, 2014). Conformers were first generated by the stochastic method and minimized in the MMFF94x force field with chloroform as the solvent to produce nine conformational clusters within 3–5 kcal mol−1 in energy that are distinct in their azepane-ring conformations, Fig. 4. Representative conformers were then subjected to DFT geometry optimization [SV(P) basis set at the B3LYP level in COSMO solvent chloroform]. Two of the nine ring geometries (geometries vi and vii, Fig. 4) found by this computational analysis matched to geometries A and B of compound (1) in the respectively. Hence the X-ray structure reported here for (1) validates our methodology as reported earlier (Patel et al., 2013, 2014).
4. Supramolecular features
In the C anions form chains along the a-axis direction through F3C⋯O1C contacts at a distance of 2.78 (2) Å. Each anion further connects to an A cation with O1C accepting three interactions and N1A as a bifurcated donor, leading to the formation of N1A—H1AA⋯O1C, N1A—H1AB⋯O1C and C4A—H4AA⋯O1C hydrogen bonds and generating R21(4) and R21(5) ring motifs, respectively (Bernstein et al., 1995). These contacts generate columns of A molecules along a. These columns are further supported by weak C7A—H7AA⋯Cg2 contacts (Cg2 is the mid-point of the C10A—C11A bond of the C8A–C13A phenyl ring), Fig. 5. Similarly, B cations are linked to D anions with O2D accepting three interactions and forming N1B—-H1BA⋯O2D, N1B—H1BB⋯O2D and C4B—H4BA⋯O2D hydrogen bonds. Unlike the AC system however, a C4B—H4BA⋯F1D hydrogen bond completes the B⋯D cation–anion contacts. These generate R21(4) and R12(5) ring motifs respectively. Weak C7B—H7BA⋯Cg1 contacts (Cg1 is the midpoint of the C10B–C11B bond of the C8B–C13B phenyl ring) link adjacent B molecules, also forming columns of B cations and D anions along the a-axis direction, Fig. 6. Contacts between the A and B cations are limited to very weak C12B—H12B⋯N4A hydrogen bonds linking adjacent columns of A and B cations, Fig. 7. This eclectic mixture of contacts generates columns with an ABCD repeat unit in the direction of the a axis, Fig. 8. Additional N—H⋯O, C—H⋯O and C—H⋯F contacts result in a three-dimensional network of cations and anions stacked along c.
5. Database survey
A survey of the Cambridge Structural Database (Version 5.36, with three updates) (Groom & Allen, 2014) reveals the crystal structures of 11 unsubstituted azepanium (hexamethyleneiminium) cations with a variety of counter-anions, see for example: Verlooy et al. (2010); Bakshi et al. (1994); Moritani et al. (1987); Kashino et al. (1981); Cameron & Scheeren (1977). Two of these salts also form co-crystals, Moritani & Kashino (2002); Misaki et al. (1989). However the structure of (3R,4R,5S,6S)-4,5,6-trihydroxy-3-methyl azepanium chloride is the only one to be reported of a substituted azepanium salt, Li et al. (2008), highlighting the novelty of the present report.
6. Synthesis and crystallization
(4R,5S,6R)-6-Azido-5-benzyloxy-3,3,4-trifluoroazepane-1-carboxylic acid-tert-butyl ester (10 mg, 25.0 µ mol) was dissolved in trifluoroacetic acid (TFA, 500 µL) at 298 K. The solution was allowed to stir for 5 min before the TFA was evaporated under an N2 flow. The reaction flask was kept under high vacuum (0.005 torr, 298 K) for 3 h to remove traces of TFA. A colorless, oily residue was obtained which was recrystallized from dichloromethane to give colorless needles characterized as (1) (10.0 mg, 97%). 1H NMR (600 MHz, CDCl3) δ 7.44–7.34 (m, 5H), 4.93 (dd, J = 44.19 (1JHF), 14.7 Hz, 1H), 4.80 (d, J = 11.44 Hz, 1H), 4.73 (d, J = 11.44 Hz, 1H), 4.08 (dd, J = 8.71, 8.68 Hz, 1H), 3.89–3.82 (m, 1H), 3.67–3.57 (m, 2H), 3.48 (d, J = 14.0 Hz, 1H), 3.10 (dd, J = 14.0, 9.70 Hz, 1H); 13C NMR (150 MHz, CDCl3) δ 135.7, 129.0, 128.5, 128.5, 118.4 (dd, 1JCF = 247.66 Hz, 2JCF = 28.07 Hz), 90.2 (ddd, 1JCF = 186.03 Hz, 2JCF = 34.98 Hz, 2JCF = 27.82 Hz), 79.6 (dd, 2JCF = 24.93 Hz, 3JCF = 7.20 Hz), 73.9, 60.6, 45.8 (dd, 2JCF = 39.76 Hz, 2JCF = 25.66 Hz), 45.6.
7. Refinement
Crystal data, data collection and structure . All H atoms were refined using a riding model, with N—H = 0.91 Å, C—H = 0.95 Å for aromatic, 1.00 Å for methine and 0.99 Å for methylene, all with Uiso(H) = 1.2Ueq(N/C). Because of the lower reflections-to-parameter ratio, anisotropic displacement parameters of several atoms in the least-squares had to be restrained using the RIGU command. These were applied to azide groups, atoms in the seven-membered and a few atoms in phenyl rings.
details are summarized in Table 2
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Supporting information
CCDC reference: 1431203
https://doi.org/10.1107/S2056989015019416/sj5470sup1.cif
contains datablocks I, global. DOI:Structure factors: contains datablock I. DOI: https://doi.org/10.1107/S2056989015019416/sj5470Isup2.hkl
Supporting information file. DOI: https://doi.org/10.1107/S2056989015019416/sj5470Isup3.cml
Data collection: XDS (Kabsch, 2010); cell
XDS (Kabsch, 2010); data reduction: XDS (Kabsch, 2010); program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL2014 (Sheldrick, 2015); molecular graphics: OLEX2 (Dolomanov et al., 2009) and Mercury (Macrae et al., 2008); software used to prepare material for publication: OLEX2 (Dolomanov et al., 2009).C13H16F3N4O+·C2F3O2− | Z = 4 |
Mr = 414.32 | F(000) = 848 |
Monoclinic, P21 | Dx = 1.541 Mg m−3 |
a = 5.8780 (12) Å | Synchrotron radiation, λ = 0.7293 Å |
b = 34.503 (7) Å | µ = 0.16 mm−1 |
c = 8.8120 (18) Å | T = 100 K |
β = 92.42 (3)° | Plate, colourless |
V = 1785.6 (6) Å3 | 0.02 × 0.01 × 0.01 mm |
Bruker APEXII CCD diffractometer | Rint = 0.386 |
ω scans | θmax = 21.5°, θmin = 2.4° |
13709 measured reflections | h = −5→5 |
3642 independent reflections | k = −34→34 |
2175 reflections with I > 2σ(I) | l = −8→8 |
Refinement on F2 | Hydrogen site location: inferred from neighbouring sites |
Least-squares matrix: full | H-atom parameters constrained |
R[F2 > 2σ(F2)] = 0.116 | w = 1/[σ2(Fo2) + (0.0001P)2] where P = (Fo2 + 2Fc2)/3 |
wR(F2) = 0.261 | (Δ/σ)max < 0.001 |
S = 0.97 | Δρmax = 0.56 e Å−3 |
3642 reflections | Δρmin = −0.41 e Å−3 |
505 parameters | Absolute structure: Flack x determined using 390 quotients [(I+)-(I-)]/[(I+)+(I-)] (Parsons et al., 2013) |
193 restraints | Absolute structure parameter: 2.2 (10) |
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 | ||
O1A | 0.606 (3) | 0.3889 (6) | 0.6446 (15) | 0.067 (5) | |
F1A | 1.1433 (19) | 0.4338 (5) | 0.6460 (13) | 0.062 (4) | |
F2A | 0.923 (2) | 0.4956 (5) | 0.7835 (11) | 0.080 (5) | |
F3A | 0.615 (2) | 0.4787 (4) | 0.6578 (10) | 0.050 (3) | |
N1A | 0.835 (3) | 0.4880 (5) | 0.3749 (14) | 0.035 (4) | |
H1AA | 0.6842 | 0.4943 | 0.3686 | 0.042* | |
H1AB | 0.9039 | 0.5018 | 0.3020 | 0.042* | |
N2A | 0.627 (4) | 0.3894 (7) | 0.3202 (19) | 0.066 (6) | |
N3A | 0.444 (5) | 0.3736 (8) | 0.351 (2) | 0.069 (7) | |
N4A | 0.278 (4) | 0.3579 (9) | 0.373 (2) | 0.090 (9) | |
C1A | 0.794 (3) | 0.4058 (7) | 0.571 (2) | 0.042 (5) | |
H1A | 0.9033 | 0.3848 | 0.5454 | 0.051* | |
C2A | 0.913 (4) | 0.4343 (7) | 0.668 (2) | 0.044 (5) | |
H2A | 0.8938 | 0.4258 | 0.7751 | 0.053* | |
C3A | 0.844 (3) | 0.4777 (7) | 0.6604 (17) | 0.034 (4) | |
C4A | 0.928 (3) | 0.5013 (7) | 0.5242 (17) | 0.039 (5) | |
H4AA | 0.8869 | 0.5289 | 0.5379 | 0.046* | |
H4AB | 1.0967 | 0.4998 | 0.5247 | 0.046* | |
C5A | 0.855 (3) | 0.4469 (7) | 0.337 (2) | 0.042 (5) | |
H5AA | 1.0121 | 0.4381 | 0.3625 | 0.050* | |
H5AB | 0.8243 | 0.4433 | 0.2270 | 0.050* | |
C6A | 0.691 (3) | 0.4228 (7) | 0.423 (2) | 0.043 (5) | |
H6A | 0.5523 | 0.4384 | 0.4446 | 0.051* | |
C7A | 0.678 (4) | 0.3547 (9) | 0.737 (3) | 0.070 (8) | |
H7AA | 0.7974 | 0.3618 | 0.8142 | 0.084* | |
H7AB | 0.7359 | 0.3339 | 0.6716 | 0.084* | |
C8A | 0.465 (4) | 0.3422 (9) | 0.810 (2) | 0.062 (6) | |
C9A | 0.373 (5) | 0.3642 (11) | 0.921 (3) | 0.081 (7) | |
H9A | 0.4346 | 0.3887 | 0.9491 | 0.097* | |
C10A | 0.178 (5) | 0.3483 (11) | 0.994 (3) | 0.082 (7) | |
H10A | 0.1049 | 0.3630 | 1.0692 | 0.098* | |
C11A | 0.099 (5) | 0.3121 (10) | 0.955 (3) | 0.079 (7) | |
H11A | −0.0217 | 0.3010 | 1.0091 | 0.095* | |
C12A | 0.182 (5) | 0.2932 (11) | 0.848 (3) | 0.084 (7) | |
H12A | 0.1102 | 0.2699 | 0.8148 | 0.101* | |
C13A | 0.375 (5) | 0.3053 (11) | 0.778 (3) | 0.080 (7) | |
H13A | 0.4478 | 0.2887 | 0.7091 | 0.096* | |
O1B | 0.613 (3) | 0.6932 (5) | 0.8311 (16) | 0.060 (4) | |
F1B | 0.916 (3) | 0.6548 (5) | 0.6524 (12) | 0.079 (5) | |
F2B | 1.1956 (19) | 0.6200 (4) | 0.8697 (11) | 0.055 (4) | |
F3B | 1.005 (2) | 0.5828 (5) | 0.7138 (11) | 0.067 (4) | |
N1B | 0.961 (3) | 0.5980 (6) | 1.1146 (16) | 0.036 (4) | |
H1BA | 0.8766 | 0.5850 | 1.1825 | 0.044* | |
H1BB | 1.1099 | 0.5922 | 1.1364 | 0.044* | |
N2B | 0.682 (3) | 0.6932 (7) | 1.1396 (17) | 0.060 (6) | |
N3B | 0.485 (4) | 0.7051 (7) | 1.1158 (18) | 0.067 (6) | |
N4B | 0.313 (4) | 0.7214 (9) | 1.101 (2) | 0.081 (8) | |
C1B | 0.792 (4) | 0.6723 (7) | 0.891 (2) | 0.045 (5) | |
H1B | 0.9306 | 0.6892 | 0.8960 | 0.054* | |
C2B | 0.830 (4) | 0.6396 (7) | 0.7792 (19) | 0.046 (5) | |
H2B | 0.6767 | 0.6285 | 0.7498 | 0.055* | |
C3B | 0.983 (4) | 0.6055 (7) | 0.836 (2) | 0.045 (5) | |
C4B | 0.898 (4) | 0.5830 (8) | 0.9578 (18) | 0.044 (5) | |
H4BA | 0.9560 | 0.5562 | 0.9494 | 0.052* | |
H4BB | 0.7300 | 0.5819 | 0.9457 | 0.052* | |
C5B | 0.930 (4) | 0.6390 (8) | 1.137 (2) | 0.048 (5) | |
H5BA | 1.0715 | 0.6520 | 1.1079 | 0.058* | |
H5BB | 0.9160 | 0.6433 | 1.2471 | 0.058* | |
C6B | 0.734 (4) | 0.6602 (8) | 1.057 (2) | 0.050 (5) | |
H6B | 0.5977 | 0.6428 | 1.0517 | 0.060* | |
C7B | 0.666 (5) | 0.7294 (11) | 0.765 (4) | 0.098 (12) | |
H7BA | 0.7893 | 0.7257 | 0.6933 | 0.117* | |
H7BB | 0.7228 | 0.7473 | 0.8460 | 0.117* | |
C8B | 0.471 (4) | 0.7466 (9) | 0.686 (2) | 0.064 (6) | |
C9B | 0.369 (5) | 0.7277 (11) | 0.557 (3) | 0.090 (9) | |
H9B | 0.4288 | 0.7044 | 0.5175 | 0.109* | |
C10B | 0.176 (5) | 0.7452 (10) | 0.492 (3) | 0.080 (8) | |
H10B | 0.1056 | 0.7328 | 0.4058 | 0.097* | |
C11B | 0.078 (5) | 0.7791 (10) | 0.541 (3) | 0.078 (7) | |
H11B | −0.0543 | 0.7895 | 0.4908 | 0.094* | |
C12B | 0.180 (4) | 0.7969 (11) | 0.665 (3) | 0.082 (8) | |
H12B | 0.1141 | 0.8200 | 0.7020 | 0.098* | |
C13B | 0.375 (5) | 0.7826 (10) | 0.737 (3) | 0.076 (7) | |
H13B | 0.4460 | 0.7963 | 0.8204 | 0.092* | |
O1C | 0.709 (3) | 0.5680 (5) | 0.3297 (14) | 0.052 (5) | |
O2C | 0.420 (2) | 0.5922 (6) | 0.1855 (13) | 0.055 (5) | |
F1C | 0.440 (2) | 0.5625 (5) | 0.5606 (11) | 0.074 (5) | |
F2C | 0.414 (2) | 0.6230 (5) | 0.5063 (14) | 0.077 (5) | |
F3C | 0.1583 (19) | 0.5832 (5) | 0.4231 (9) | 0.071 (5) | |
C1C | 0.382 (3) | 0.5872 (8) | 0.447 (2) | 0.042 (6) | |
C2C | 0.519 (4) | 0.5805 (6) | 0.306 (2) | 0.033 (5) | |
O1D | 0.378 (2) | 0.4904 (5) | 1.2965 (13) | 0.047 (4) | |
O2D | 0.090 (2) | 0.5162 (5) | 1.1558 (11) | 0.045 (4) | |
F1D | 0.366 (2) | 0.5249 (4) | 0.9285 (10) | 0.054 (3) | |
F2D | 0.375 (2) | 0.4654 (5) | 0.9654 (12) | 0.071 (4) | |
F3D | 0.638 (2) | 0.5015 (5) | 1.0584 (11) | 0.066 (4) | |
C1D | 0.420 (3) | 0.4990 (8) | 1.0293 (18) | 0.037 (4) | |
C2D | 0.281 (4) | 0.5034 (7) | 1.1753 (19) | 0.036 (6) |
U11 | U22 | U33 | U12 | U13 | U23 | |
O1A | 0.045 (10) | 0.100 (17) | 0.058 (9) | 0.007 (10) | 0.001 (7) | 0.006 (10) |
F1A | 0.035 (8) | 0.079 (12) | 0.070 (7) | 0.005 (7) | −0.004 (5) | 0.024 (8) |
F2A | 0.097 (10) | 0.120 (15) | 0.022 (6) | −0.010 (10) | −0.007 (5) | −0.020 (7) |
F3A | 0.060 (8) | 0.051 (10) | 0.042 (6) | −0.004 (7) | 0.013 (5) | −0.006 (6) |
N1A | 0.036 (9) | 0.043 (10) | 0.026 (6) | −0.004 (7) | 0.002 (5) | −0.004 (6) |
N2A | 0.077 (14) | 0.070 (17) | 0.050 (10) | −0.010 (12) | −0.007 (9) | −0.024 (11) |
N3A | 0.078 (15) | 0.075 (18) | 0.053 (11) | −0.007 (12) | −0.012 (10) | −0.010 (11) |
N4A | 0.090 (16) | 0.11 (2) | 0.068 (12) | −0.036 (14) | 0.005 (11) | −0.046 (13) |
C1A | 0.033 (12) | 0.050 (11) | 0.044 (8) | 0.005 (8) | −0.002 (7) | 0.004 (7) |
C2A | 0.058 (13) | 0.046 (10) | 0.028 (8) | −0.006 (8) | −0.001 (8) | 0.007 (7) |
C3A | 0.035 (12) | 0.047 (10) | 0.020 (8) | −0.009 (8) | −0.003 (7) | −0.005 (7) |
C4A | 0.055 (12) | 0.036 (11) | 0.024 (6) | −0.008 (9) | 0.000 (6) | −0.006 (7) |
C5A | 0.046 (11) | 0.043 (10) | 0.037 (9) | −0.002 (8) | −0.002 (7) | −0.006 (7) |
C6A | 0.042 (11) | 0.043 (12) | 0.043 (8) | 0.006 (8) | −0.004 (7) | 0.003 (8) |
C7A | 0.067 (17) | 0.07 (2) | 0.077 (15) | 0.031 (16) | 0.012 (12) | 0.042 (16) |
C8A | 0.075 (14) | 0.075 (16) | 0.034 (10) | 0.012 (11) | −0.018 (9) | 0.019 (9) |
C9A | 0.091 (16) | 0.091 (17) | 0.060 (13) | 0.011 (12) | −0.005 (10) | 0.002 (11) |
C10A | 0.094 (16) | 0.098 (17) | 0.053 (12) | 0.011 (12) | 0.000 (10) | 0.013 (12) |
C11A | 0.093 (15) | 0.088 (17) | 0.056 (12) | 0.016 (12) | −0.014 (10) | 0.032 (11) |
C12A | 0.086 (16) | 0.097 (17) | 0.070 (14) | 0.002 (12) | −0.012 (10) | 0.013 (12) |
C13A | 0.090 (16) | 0.084 (17) | 0.066 (13) | 0.002 (11) | −0.008 (10) | 0.004 (11) |
O1B | 0.068 (10) | 0.048 (13) | 0.062 (8) | 0.003 (9) | −0.020 (7) | 0.015 (9) |
F1B | 0.128 (12) | 0.080 (13) | 0.030 (6) | −0.003 (10) | 0.007 (7) | 0.019 (7) |
F2B | 0.045 (8) | 0.072 (11) | 0.049 (6) | −0.009 (7) | 0.012 (5) | 0.017 (7) |
F3B | 0.100 (11) | 0.077 (12) | 0.027 (6) | −0.002 (9) | 0.018 (6) | −0.001 (7) |
N1B | 0.030 (9) | 0.043 (10) | 0.036 (7) | −0.004 (7) | −0.003 (6) | 0.004 (6) |
N2B | 0.067 (11) | 0.072 (17) | 0.040 (9) | 0.004 (11) | −0.004 (9) | −0.023 (10) |
N3B | 0.062 (12) | 0.085 (19) | 0.053 (10) | 0.007 (11) | 0.008 (10) | −0.006 (11) |
N4B | 0.067 (12) | 0.10 (2) | 0.078 (13) | 0.017 (12) | 0.000 (10) | −0.019 (14) |
C1B | 0.044 (12) | 0.052 (12) | 0.038 (8) | −0.014 (9) | −0.013 (7) | 0.008 (7) |
C2B | 0.058 (12) | 0.050 (11) | 0.028 (8) | −0.022 (8) | −0.005 (7) | 0.014 (7) |
C3B | 0.060 (12) | 0.051 (12) | 0.024 (8) | −0.017 (9) | −0.012 (7) | 0.007 (8) |
C4B | 0.052 (12) | 0.047 (11) | 0.031 (7) | −0.005 (9) | −0.003 (7) | 0.010 (7) |
C5B | 0.056 (11) | 0.050 (10) | 0.037 (9) | −0.004 (9) | −0.008 (8) | −0.001 (8) |
C6B | 0.051 (11) | 0.057 (14) | 0.042 (8) | −0.008 (9) | −0.006 (7) | 0.008 (8) |
C7B | 0.09 (2) | 0.09 (3) | 0.11 (2) | −0.034 (19) | −0.037 (16) | 0.08 (2) |
C8B | 0.065 (13) | 0.081 (17) | 0.046 (10) | 0.005 (11) | 0.004 (9) | 0.020 (10) |
C9B | 0.098 (15) | 0.098 (18) | 0.073 (13) | 0.031 (13) | −0.027 (11) | −0.004 (12) |
C10B | 0.091 (15) | 0.092 (18) | 0.057 (12) | 0.018 (12) | −0.010 (10) | 0.019 (11) |
C11B | 0.072 (15) | 0.087 (18) | 0.075 (13) | 0.008 (12) | −0.007 (10) | 0.018 (11) |
C12B | 0.069 (14) | 0.100 (18) | 0.076 (13) | 0.013 (12) | −0.003 (10) | 0.004 (12) |
C13B | 0.071 (14) | 0.093 (18) | 0.064 (12) | 0.008 (11) | −0.003 (10) | 0.008 (11) |
O1C | 0.036 (9) | 0.077 (14) | 0.043 (7) | 0.014 (9) | −0.007 (6) | −0.002 (8) |
O2C | 0.035 (8) | 0.108 (16) | 0.022 (7) | −0.011 (9) | −0.005 (6) | 0.003 (8) |
F1C | 0.063 (8) | 0.130 (16) | 0.028 (6) | 0.010 (9) | 0.010 (5) | 0.020 (8) |
F2C | 0.085 (10) | 0.091 (15) | 0.055 (7) | 0.010 (10) | 0.010 (6) | −0.027 (9) |
F3C | 0.044 (9) | 0.151 (17) | 0.019 (5) | 0.010 (8) | 0.003 (5) | −0.004 (7) |
C1C | 0.028 (14) | 0.08 (2) | 0.020 (10) | −0.002 (12) | −0.002 (9) | −0.012 (13) |
C2C | 0.047 (15) | 0.016 (14) | 0.038 (12) | −0.010 (11) | 0.004 (11) | −0.002 (10) |
O1D | 0.035 (8) | 0.070 (13) | 0.037 (7) | 0.006 (8) | 0.013 (6) | 0.012 (8) |
O2D | 0.028 (9) | 0.087 (14) | 0.020 (6) | 0.020 (8) | 0.009 (5) | 0.006 (7) |
F1D | 0.060 (7) | 0.089 (9) | 0.013 (5) | 0.004 (6) | 0.003 (4) | 0.016 (5) |
F2D | 0.099 (10) | 0.078 (10) | 0.038 (6) | 0.001 (7) | 0.015 (6) | −0.016 (6) |
F3D | 0.040 (6) | 0.116 (13) | 0.043 (6) | 0.008 (6) | 0.003 (5) | 0.019 (7) |
C1D | 0.039 (9) | 0.059 (10) | 0.012 (8) | 0.006 (7) | 0.000 (7) | −0.001 (7) |
C2D | 0.030 (13) | 0.050 (17) | 0.027 (11) | 0.012 (12) | 0.000 (9) | −0.001 (10) |
O1A—C1A | 1.43 (3) | N1B—H1BB | 0.9100 |
O1A—C7A | 1.48 (3) | N1B—C4B | 1.51 (2) |
F1A—C2A | 1.37 (2) | N1B—C5B | 1.44 (3) |
F2A—C3A | 1.31 (2) | N2B—N3B | 1.24 (3) |
F3A—C3A | 1.34 (2) | N2B—C6B | 1.39 (3) |
N1A—H1AA | 0.9100 | N3B—N4B | 1.16 (3) |
N1A—H1AB | 0.9100 | C1B—H1B | 1.0000 |
N1A—C4A | 1.48 (2) | C1B—C2B | 1.52 (3) |
N1A—C5A | 1.46 (3) | C1B—C6B | 1.57 (3) |
N2A—N3A | 1.25 (3) | C2B—H2B | 1.0000 |
N2A—C6A | 1.50 (3) | C2B—C3B | 1.55 (3) |
N3A—N4A | 1.14 (3) | C3B—C4B | 1.43 (3) |
C1A—H1A | 1.0000 | C4B—H4BA | 0.9900 |
C1A—C2A | 1.46 (3) | C4B—H4BB | 0.9900 |
C1A—C6A | 1.53 (3) | C5B—H5BA | 0.9900 |
C2A—H2A | 1.0000 | C5B—H5BB | 0.9900 |
C2A—C3A | 1.55 (3) | C5B—C6B | 1.51 (3) |
C3A—C4A | 1.55 (3) | C6B—H6B | 1.0000 |
C4A—H4AA | 0.9900 | C7B—H7BA | 0.9900 |
C4A—H4AB | 0.9900 | C7B—H7BB | 0.9900 |
C5A—H5AA | 0.9900 | C7B—C8B | 1.45 (4) |
C5A—H5AB | 0.9900 | C8B—C9B | 1.42 (4) |
C5A—C6A | 1.50 (3) | C8B—C13B | 1.45 (4) |
C6A—H6A | 1.0000 | C9B—H9B | 0.9500 |
C7A—H7AA | 0.9900 | C9B—C10B | 1.38 (4) |
C7A—H7AB | 0.9900 | C10B—H10B | 0.9500 |
C7A—C8A | 1.50 (4) | C10B—C11B | 1.38 (4) |
C8A—C9A | 1.37 (4) | C11B—H11B | 0.9500 |
C8A—C13A | 1.40 (4) | C11B—C12B | 1.37 (4) |
C9A—H9A | 0.9500 | C12B—H12B | 0.9500 |
C9A—C10A | 1.44 (4) | C12B—C13B | 1.38 (4) |
C10A—H10A | 0.9500 | C13B—H13B | 0.9500 |
C10A—C11A | 1.37 (4) | O1C—C2C | 1.21 (2) |
C11A—H11A | 0.9500 | O2C—C2C | 1.26 (2) |
C11A—C12A | 1.26 (4) | F1C—C1C | 1.35 (3) |
C12A—H12A | 0.9500 | F2C—C1C | 1.35 (3) |
C12A—C13A | 1.38 (4) | F3C—C1C | 1.33 (2) |
C13A—H13A | 0.9500 | C1C—C2C | 1.53 (3) |
O1B—C1B | 1.36 (3) | O1D—C2D | 1.27 (2) |
O1B—C7B | 1.42 (3) | O2D—C2D | 1.21 (2) |
F1B—C2B | 1.35 (2) | F1D—C1D | 1.29 (3) |
F2B—C3B | 1.37 (2) | F2D—C1D | 1.31 (3) |
F3B—C3B | 1.34 (2) | F3D—C1D | 1.30 (2) |
N1B—H1BA | 0.9100 | C1D—C2D | 1.56 (3) |
C1A—O1A—C7A | 111.5 (17) | O1B—C1B—H1B | 108.8 |
H1AA—N1A—H1AB | 107.1 | O1B—C1B—C2B | 105.9 (15) |
C4A—N1A—H1AA | 107.8 | O1B—C1B—C6B | 107.8 (18) |
C4A—N1A—H1AB | 107.8 | C2B—C1B—H1B | 108.8 |
C5A—N1A—H1AA | 107.8 | C2B—C1B—C6B | 116.6 (19) |
C5A—N1A—H1AB | 107.8 | C6B—C1B—H1B | 108.8 |
C5A—N1A—C4A | 118.2 (17) | F1B—C2B—C1B | 108.4 (18) |
N3A—N2A—C6A | 113.7 (18) | F1B—C2B—H2B | 107.3 |
N4A—N3A—N2A | 177 (3) | F1B—C2B—C3B | 108.9 (18) |
O1A—C1A—H1A | 108.8 | C1B—C2B—H2B | 107.3 |
O1A—C1A—C2A | 111.7 (16) | C1B—C2B—C3B | 117.1 (15) |
O1A—C1A—C6A | 104.8 (15) | C3B—C2B—H2B | 107.3 |
C2A—C1A—H1A | 108.8 | F2B—C3B—C2B | 107.8 (18) |
C2A—C1A—C6A | 113.8 (19) | F2B—C3B—C4B | 112.1 (15) |
C6A—C1A—H1A | 108.8 | F3B—C3B—F2B | 105.8 (18) |
F1A—C2A—C1A | 111.1 (18) | F3B—C3B—C2B | 105.2 (14) |
F1A—C2A—H2A | 106.5 | F3B—C3B—C4B | 110 (2) |
F1A—C2A—C3A | 105.3 (17) | C4B—C3B—C2B | 116 (2) |
C1A—C2A—H2A | 106.5 | N1B—C4B—H4BA | 108.5 |
C1A—C2A—C3A | 120.3 (17) | N1B—C4B—H4BB | 108.5 |
C3A—C2A—H2A | 106.5 | C3B—C4B—N1B | 115 (2) |
F2A—C3A—F3A | 108.7 (15) | C3B—C4B—H4BA | 108.5 |
F2A—C3A—C2A | 109.5 (16) | C3B—C4B—H4BB | 108.5 |
F2A—C3A—C4A | 106.2 (18) | H4BA—C4B—H4BB | 107.5 |
F3A—C3A—C2A | 106.6 (17) | N1B—C5B—H5BA | 107.1 |
F3A—C3A—C4A | 109.1 (15) | N1B—C5B—H5BB | 107.1 |
C4A—C3A—C2A | 116.6 (17) | N1B—C5B—C6B | 120.7 (19) |
N1A—C4A—C3A | 114.0 (17) | H5BA—C5B—H5BB | 106.8 |
N1A—C4A—H4AA | 108.8 | C6B—C5B—H5BA | 107.1 |
N1A—C4A—H4AB | 108.8 | C6B—C5B—H5BB | 107.1 |
C3A—C4A—H4AA | 108.8 | N2B—C6B—C1B | 109 (2) |
C3A—C4A—H4AB | 108.8 | N2B—C6B—C5B | 109.3 (18) |
H4AA—C4A—H4AB | 107.7 | N2B—C6B—H6B | 108.8 |
N1A—C5A—H5AA | 109.4 | C1B—C6B—H6B | 108.8 |
N1A—C5A—H5AB | 109.4 | C5B—C6B—C1B | 111.8 (19) |
N1A—C5A—C6A | 111.3 (16) | C5B—C6B—H6B | 108.8 |
H5AA—C5A—H5AB | 108.0 | O1B—C7B—H7BA | 109.2 |
C6A—C5A—H5AA | 109.4 | O1B—C7B—H7BB | 109.2 |
C6A—C5A—H5AB | 109.4 | O1B—C7B—C8B | 112 (2) |
N2A—C6A—C1A | 107.4 (19) | H7BA—C7B—H7BB | 107.9 |
N2A—C6A—H6A | 110.0 | C8B—C7B—H7BA | 109.2 |
C1A—C6A—H6A | 110.0 | C8B—C7B—H7BB | 109.2 |
C5A—C6A—N2A | 105.6 (16) | C9B—C8B—C7B | 120 (3) |
C5A—C6A—C1A | 113.6 (16) | C9B—C8B—C13B | 119 (2) |
C5A—C6A—H6A | 110.0 | C13B—C8B—C7B | 121 (3) |
O1A—C7A—H7AA | 111.0 | C8B—C9B—H9B | 121.9 |
O1A—C7A—H7AB | 111.0 | C10B—C9B—C8B | 116 (3) |
O1A—C7A—C8A | 103.9 (18) | C10B—C9B—H9B | 121.9 |
H7AA—C7A—H7AB | 109.0 | C9B—C10B—H10B | 117.2 |
C8A—C7A—H7AA | 111.0 | C11B—C10B—C9B | 126 (3) |
C8A—C7A—H7AB | 111.0 | C11B—C10B—H10B | 117.2 |
C9A—C8A—C7A | 121 (3) | C10B—C11B—H11B | 121.4 |
C9A—C8A—C13A | 119 (3) | C12B—C11B—C10B | 117 (3) |
C13A—C8A—C7A | 119 (3) | C12B—C11B—H11B | 121.4 |
C8A—C9A—H9A | 121.5 | C11B—C12B—H12B | 118.8 |
C8A—C9A—C10A | 117 (3) | C11B—C12B—C13B | 122 (3) |
C10A—C9A—H9A | 121.5 | C13B—C12B—H12B | 118.8 |
C9A—C10A—H10A | 120.0 | C8B—C13B—H13B | 120.5 |
C11A—C10A—C9A | 120 (3) | C12B—C13B—C8B | 119 (3) |
C11A—C10A—H10A | 120.0 | C12B—C13B—H13B | 120.5 |
C10A—C11A—H11A | 119.4 | F1C—C1C—F2C | 105.5 (15) |
C12A—C11A—C10A | 121 (3) | F1C—C1C—C2C | 112.4 (19) |
C12A—C11A—H11A | 119.4 | F2C—C1C—C2C | 112.3 (19) |
C11A—C12A—H12A | 119.0 | F3C—C1C—F1C | 105.9 (17) |
C11A—C12A—C13A | 122 (4) | F3C—C1C—F2C | 106.2 (19) |
C13A—C12A—H12A | 119.0 | F3C—C1C—C2C | 114.0 (15) |
C8A—C13A—H13A | 120.2 | O1C—C2C—O2C | 130.8 (17) |
C12A—C13A—C8A | 120 (3) | O1C—C2C—C1C | 115.5 (17) |
C12A—C13A—H13A | 120.2 | O2C—C2C—C1C | 113.4 (19) |
C1B—O1B—C7B | 116.5 (19) | F1D—C1D—F2D | 106.0 (14) |
H1BA—N1B—H1BB | 107.4 | F1D—C1D—F3D | 107.8 (18) |
C4B—N1B—H1BA | 108.4 | F1D—C1D—C2D | 112.2 (18) |
C4B—N1B—H1BB | 108.4 | F2D—C1D—C2D | 109.7 (19) |
C5B—N1B—H1BA | 108.4 | F3D—C1D—F2D | 108.8 (19) |
C5B—N1B—H1BB | 108.4 | F3D—C1D—C2D | 112.2 (15) |
C5B—N1B—C4B | 115.7 (16) | O1D—C2D—C1D | 115.4 (17) |
N3B—N2B—C6B | 113.9 (19) | O2D—C2D—O1D | 128.7 (16) |
N4B—N3B—N2B | 170 (3) | O2D—C2D—C1D | 115.6 (15) |
O1A—C1A—C2A—F1A | 145.1 (17) | F1B—C2B—C3B—F3B | −51 (2) |
O1A—C1A—C2A—C3A | −91 (2) | F1B—C2B—C3B—C4B | −172.2 (18) |
O1A—C1A—C6A—N2A | −71 (2) | F2B—C3B—C4B—N1B | 37 (3) |
O1A—C1A—C6A—C5A | 172.1 (19) | F3B—C3B—C4B—N1B | 153.7 (17) |
O1A—C7A—C8A—C9A | −70 (3) | N1B—C5B—C6B—N2B | 155.3 (19) |
O1A—C7A—C8A—C13A | 118 (2) | N1B—C5B—C6B—C1B | −84 (3) |
F1A—C2A—C3A—F2A | −72.0 (17) | N3B—N2B—C6B—C1B | 81 (2) |
F1A—C2A—C3A—F3A | 170.6 (12) | N3B—N2B—C6B—C5B | −157 (2) |
F1A—C2A—C3A—C4A | 48.5 (19) | C1B—O1B—C7B—C8B | 171 (2) |
F2A—C3A—C4A—N1A | −173.5 (17) | C1B—C2B—C3B—F2B | −62 (2) |
F3A—C3A—C4A—N1A | −57 (2) | C1B—C2B—C3B—F3B | −174.5 (17) |
N1A—C5A—C6A—N2A | 148.0 (17) | C1B—C2B—C3B—C4B | 64 (3) |
N1A—C5A—C6A—C1A | −94 (2) | C2B—C1B—C6B—N2B | −174.0 (19) |
N3A—N2A—C6A—C1A | 80 (2) | C2B—C1B—C6B—C5B | 65 (3) |
N3A—N2A—C6A—C5A | −159 (2) | C2B—C3B—C4B—N1B | −88 (2) |
C1A—O1A—C7A—C8A | 177.4 (19) | C4B—N1B—C5B—C6B | 35 (3) |
C1A—C2A—C3A—F2A | 161.7 (17) | C5B—N1B—C4B—C3B | 47 (3) |
C1A—C2A—C3A—F3A | 44 (2) | C6B—N2B—N3B—N4B | −158 (12) |
C1A—C2A—C3A—C4A | −78 (2) | C6B—C1B—C2B—F1B | −169.4 (16) |
C2A—C1A—C6A—N2A | 166.2 (18) | C6B—C1B—C2B—C3B | −46 (3) |
C2A—C1A—C6A—C5A | 50 (2) | C7B—O1B—C1B—C2B | −105 (2) |
C2A—C3A—C4A—N1A | 64 (2) | C7B—O1B—C1B—C6B | 129 (2) |
C4A—N1A—C5A—C6A | 74 (2) | C7B—C8B—C9B—C10B | 177 (3) |
C5A—N1A—C4A—C3A | −52 (2) | C7B—C8B—C13B—C12B | −176 (3) |
C6A—C1A—C2A—F1A | −97 (2) | C8B—C9B—C10B—C11B | 0 (5) |
C6A—C1A—C2A—C3A | 27 (3) | C9B—C8B—C13B—C12B | 3 (4) |
C7A—O1A—C1A—C2A | −87 (2) | C9B—C10B—C11B—C12B | 0 (5) |
C7A—O1A—C1A—C6A | 148.9 (19) | C10B—C11B—C12B—C13B | 1 (4) |
C7A—C8A—C9A—C10A | −175 (2) | C11B—C12B—C13B—C8B | −3 (4) |
C7A—C8A—C13A—C12A | 178 (2) | C13B—C8B—C9B—C10B | −2 (4) |
C8A—C9A—C10A—C11A | 2 (4) | F1C—C1C—C2C—O1C | −30 (3) |
C9A—C8A—C13A—C12A | 7 (4) | F1C—C1C—C2C—O2C | 155.7 (18) |
C9A—C10A—C11A—C12A | −5 (4) | F2C—C1C—C2C—O1C | 89 (2) |
C10A—C11A—C12A—C13A | 9 (5) | F2C—C1C—C2C—O2C | −86 (2) |
C11A—C12A—C13A—C8A | −9 (4) | F3C—C1C—C2C—O1C | −150 (2) |
C13A—C8A—C9A—C10A | −3 (3) | F3C—C1C—C2C—O2C | 35 (3) |
O1B—C1B—C2B—F1B | 71 (2) | F1D—C1D—C2D—O1D | −154.0 (19) |
O1B—C1B—C2B—C3B | −165.6 (17) | F1D—C1D—C2D—O2D | 31 (3) |
O1B—C1B—C6B—N2B | −55 (2) | F2D—C1D—C2D—O1D | 89 (2) |
O1B—C1B—C6B—C5B | −176 (2) | F2D—C1D—C2D—O2D | −86 (3) |
O1B—C7B—C8B—C9B | −64 (4) | F3D—C1D—C2D—O1D | −32 (3) |
O1B—C7B—C8B—C13B | 115 (3) | F3D—C1D—C2D—O2D | 153 (2) |
F1B—C2B—C3B—F2B | 61 (2) |
Cg1 and Cg2 are the mid-points of the C10A—C11A and C10B—C11B bonds, respectively. |
D—H···A | D—H | H···A | D···A | D—H···A |
N1A—H1AA···O1Di | 0.91 | 1.89 | 2.75 (2) | 156 |
N1A—H1AB···O2Dii | 0.91 | 1.79 | 2.677 (19) | 163 |
N1B—H1BA···O1Ciii | 0.91 | 1.76 | 2.66 (2) | 170 |
N1B—H1BB···O2Civ | 0.91 | 1.85 | 2.75 (2) | 167 |
N1A—H1AA···O1C | 0.91 | 2.57 | 2.88 (3) | 101 |
N1A—H1AB···O1C | 0.91 | 2.57 | 2.88 (3) | 101 |
N1B—H1BB···O2Dv | 0.91 | 2.63 | 2.94 (3) | 101 |
N1B—H1BA···O2Dv | 0.91 | 2.70 | 2.94 (3) | 96 |
N1A—H1AB···F3Di | 0.91 | 2.60 | 3.010 (16) | 108 |
N1B—H1BB···F3Civ | 0.91 | 2.55 | 2.954 (17) | 108 |
C4A—H4AA···O1C | 0.99 | 2.47 | 3.12 (3) | 122 |
C6A—H6A···O1Di | 1.00 | 2.42 | 3.14 (3) | 129 |
C4B—H4BA···O2Dv | 0.99 | 2.39 | 3.08 (3) | 126 |
C6B—H6B···O2Ciii | 1.00 | 2.37 | 3.22 (3) | 142 |
C12B—H12B···N4Avi | 0.95 | 2.71 | 3.42 (4) | 133 |
C4A—H4AA···F3B | 0.99 | 2.50 | 3.29 (3) | 137 |
C4A—H4AA···F3Cv | 0.99 | 2.69 | 3.27 (3) | 118 |
C5A—H5AA···F1A | 0.99 | 2.59 | 3.18 (2) | 118 |
C5A—H5AB···F3Di | 0.99 | 2.70 | 3.31 (2) | 120 |
C6A—H6A···F3A | 1.00 | 2.35 | 2.88 (2) | 112 |
C4B—H4BA···F2A | 0.99 | 2.55 | 3.39 (3) | 142 |
C4B—H4BA···F3D | 0.99 | 2.85 | 3.34 (3) | 111 |
C5B—H5BA···F2B | 0.99 | 2.51 | 2.95 (2) | 107 |
C7B—H7BA···F1B | 0.99 | 2.59 | 3.15 (5) | 116 |
C7B—H7BA···Cg1v | 0.99 | 2.87 | 3.73 (4) | 146 |
C7A—H7AA···Cg2v | 0.99 | 2.64 | 3.46 (4) | 140 |
Symmetry codes: (i) x, y, z−1; (ii) x+1, y, z−1; (iii) x, y, z+1; (iv) x+1, y, z+1; (v) x+1, y, z; (vi) −x, y+1/2, −z+1. |
Footnotes
‡Current address: School of Chemistry, The University of New South Wales, Sydney NSW 2052, Australia.
Acknowledgements
The authors thank the Australian Synchrotron facility for the diffraction data. The support from Dr Luke Hunter and Dr Samuel Kutty is greatly appreciated.
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