Crystal structure of 1-hepta­fluoro­tolyl-closo-1,2-dicarbadodeca­borane

Watson, J.D.; Benton, A.; Tricas, H.; Rosair, G.M.; Welch, A.J.

doi:10.1107/S2056989019004067

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ISSN: 2056-9890

Volume 75| Part 4| April 2019| Pages 512-515

https://doi.org/10.1107/S2056989019004067

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Crystal structure of 1-heptafluorotolyl-closo-1,2-dicarbadodecaborane

James D. Watson,^a Amanda Benton,^a Hugo Tricas,^a Georgina M. Rosair ^a and Alan J. Welch ^a ^*

^aInstitute of Chemical Sciences, School of Engineering & Physical Sciences, Heriot-Watt University, Edinburgh, EH14 4AS, UK
^*Correspondence e-mail: a.j.welch@hw.ac.uk

Edited by A. J. Lough, University of Toronto, Canada (Received 20 February 2019; accepted 26 March 2019; online 29 March 2019)

The molecular structure of the title compound 1-(2′,3′,5′,6′-tetrafluoro-4′-trifluoromethylphenyl)-closo-1,2-dicarbadodecaborane, C₉H₁₁B₁₀F₇, features an intramolecular ortho-F⋯H2 hydrogen bond [2.11 (2) Å], which is responsible for an orientation of the heptafluorotolyl substituent in which the plane of the aryl ring nearly eclipses the C1—C2 cage connectivity.

Keywords: crystal structure; carborane; intramolecular F⋯H hydrogen-bond.

CCDC reference: 1905663

1. Chemical context

Carborane chemistry continues to be an area of intense academic interest but also one that has both potential and real applications in a wide variety of fields, with a particular blossoming of such applications over the last two decades (Grimes, 2016 ). Two important factors driving studies into the synthesis and properties of novel carborane compounds for a vast array of applications are the high chemical and thermal stabilities of such species and the relative ease of their derivatization. Several years ago we described a family of doubly substituted closo-C₂B₁₀ carboranes bearing fluorinated aryl groups (Tricas et al., 2011 ). Our comprehensive (synthetic, spectroscopic, structural, electrochemical and computational) study focused primarily on the stabilization of the reduced form of the carboranes by the presence of the strongly electron-withdrawing fluoroaryl groups, and the study has attracted considerable attention from those working in the related field of carborane photophysics (e.g. Van Nghia et al., 2018 ; Marsh et al., 2018 ). Very recently we have reported the first examples of substituted carboranes as components of intermolecular frustrated Lewis pairs (FLPs; Benton et al., 2018 ). In this field the ability to fine-tune the Lewis acidity or basicity of a functional group on a carborane support by the electron-withdrawing or electron-donating characteristics of a second substituent on the carborane is of potential importance in using these FLPs as catalysts. Herein we report the synthesis and crystal structure of [1-(4′-F₃CC₆F₄)-closo-1,2-C₂B₁₀H₁₁], a singly substituted fluoroaryl carborane with the potential for further derivatization.

2. Structural commentary

H atoms bound to C in closo carboranes are protonic in nature (Grimes, 2016) and the strongly electron-withdrawing nature of the perfluorotolyl substituent on C1 renders the H atom on C2 in [1-(4′-F₃CC₆F₄)-closo-1,2-C₂B₁₀H₁₁] particularly protonic, as evidenced by its high-frequency ¹H NMR chemical shift (δ 4.88 ppm). This makes the C1H1 unit a strong hydrogen-bond donor and results in the most striking feature of the structure (Fig. 1), the intramolecular hydrogen bond between F12 and H2. Molecular dimensions for the hydrogen bond are given in Table 1 and are complemented by the near-tetrahedral angle C12—F12⋯H2 = 108.4 (6) °. This hydrogen bond is responsible for the orientation of the 4′-F₃CC₆F₄ substituent with respect to the carborane in the solid state, defined by the torsion angle C2—C1—C11—C12 = 9.6 (2)°, in which the plane of the aryl ring almost eclipses the C1—C2 connectivity.

Table 1
Hydrogen-bond geometry (Å, °)

D—H⋯A	D—H	H⋯A	D⋯A	D—H⋯A
C2—H2⋯F12	0.91 (2)	2.11 (2)	2.7436 (19)	126 (2)

Figure 1
The molecular structure of [1-(4′-F₃CC₆F₄)-closo-1,2-C₂B₁₀H₁₁] with key atoms labelled. Displacement ellipsoids are drawn at the 50% probability level, except for H atoms. The hydrogen bond between F12 and H2 is shown as a dotted line.

The only other [1-(ortho-F-aryl)-closo-1,2-C₂B₁₀H₁₁] species to have been studied crystallographically is that with a 2′-fluoro-4′-(9′′-phenanthrenyl) substituent (Tu et al., 2017 ). In this species there is an intermolecular F⋯C_cageH hydrogen-bond, 2.091 (4) Å, between the two crystallographically independent molecules in the asymmetric fraction of the unit cell, although the situation is somewhat complicated by partial disorder of both F atoms. The C1—C2 distance in [1-(4′-F₃CC₆F₄)-closo-1,2-C₂B₁₀H₁₁], 1.660 (2) Å, stands good comparison with that in [1-Ph-closo-1,2-C₂B₁₀H₁₁] [α polymorph, 1.640 (5) Å, Brain et al., 1996 ; β polymorph, 1.649 (2) Å, Thomas et al., 1996 ]. Dimensions within the 4′-F₃CC₆F₄ substituent are fully consistent with those in [1-(4′-F₃CC₆F₄)-2-Ph-closo-1,2-C₂B₁₀H₁₀], [1,2-(4′-F₃CC₆F₄)₂-closo-1,2-C₂B₁₀H₁₀], [1,7-(4′-F₃CC₆F₄)₂-closo-1,7-C₂B₁₀H₁₀] and [1,12-(4′-F₃CC₆F₄)₂-closo-1,12-C₂B₁₀H₁₀] (Tricas et al., 2011).

3. Supramolecular features

Molecules pack in ribbons parallel to the crystallographic a axis, but there are no significant intermolecular contacts either within or between these ribbons. A view of the crystal packing along [100] is shown in Fig. 2.

Figure 2
Unit cell of [1-(4′-F₃CC₆F₄)-closo-1,2-C₂B₁₀H₁₁] in a view along [100].

4. Database survey

A search of the Cambridge Structural Database (CSD, 2019 release; Groom et al., 2016 ) yielded 384 examples of [C-aryl-closo-1,2-C₂B₁₀] carboranes. However, this number drops to 63 if the second cage C atom is not substituted, i.e. structures of the type [1-aryl-closo-1,2-C₂B₁₀H₁₁]. Furthermore, there are only two reported structural studies of cases where the aryl ring is at least partially fluorinated, the aforementioned 2′-fluoro-4′-(9′′-phenanthrenyl) species (Tu et al., 2017) and [1-(4′-C₆H₄F)-closo-1,2-C₂B₁₀H₁₁] (Clegg, 2016 ). Removing the condition that the second cage C atom is not substituted affords 19 further examples of fluoroaryl derivatives of [closo-1,2-C₂B₁₀H₁₁]. There are only three examples where a 4′-F₃CC₆F₄ substituent is attached to a [closo-1,2-C₂B₁₀] cage, two of which result from our laboratories (Tricas et al., 2011) and the other from Lee et al. (2017 ).

5. Synthesis and crystallization

Under dry N₂ and using anhydrous, degassed solvents, [closo-1,2-C₂B₁₀H₁₂] (0.75 g, 5.2 mmol) was dissolved in a 1:1 mixture of toluene and diethyl ether (40 mL). The colourless solution was cooled to 273 K before n-BuLi (3.58 mL of a 1.6 M solution in hexanes, 5.73 mmol, 1.1 equiv.) was added dropwise over the course of 2 min. whilst stirring vigorously. The solution was warmed to room temperature and changed from colourless to yellow. After further stirring for 1 h the solution was cooled to 273 K, resulting in a white suspension. Whilst stirring vigorously, octafluorotoluene (0.74 mL, 5.2 mmol, 1.0 equiv.) was added dropwise over the course of 1 min., causing the solution to turn from yellow to deep red. The solution was stirred for 4 h at room temperature and then quenched with saturated [NH₄]Cl (aq., 20 mL). The organic layer was isolated and the aqueous phase extracted with Et₂O (3 × 20 mL). The organic phases were combined and reduced in volume in vacuo to yield a brown residue. Products were isolated by column chromatography on silica eluting with 313–333 K petroleum ether to give both the target compound [1-(4′-F₃CC₆F₄)-closo-1,2-C₂B₁₀H₁₁] (R_f = 0.27, 0.57 g, 30% yield) and the disubstituted species [1,2-(4′-F₃CC₆F₄)₂-closo-1,2-C₂B₁₀H₁₀] (R_f = 0.37, 0.33 g, 11% yield, Tricas et al., 2011) as colourless solids once evacuated to dryness.

C₉H₁₁B₁₀F₇ requires; C 30.0, H 3.08. Found; C 30.5, H 2.83%. ¹H NMR (CDCl₃, 400.1 MHz, 298 K, δ): 4.88 (br. s, 1H, CH_cage). ¹¹B{¹H} NMR (CDCl₃, 128.4 MHz, 298 K, δ): −0.32 (1B), −1.80 (1B), −8.06 (2B), −9.62 (2B), −11.17 (2B), −12.89 (2B). ¹⁹F NMR (CDCl₃, 376.5 MHz, 298 K, δ): −56.72 (t, 3F, J_FF = 21.3 Hz, CF₃), −135.17 (br. s, 2F, F_ortho), −137.26 (m, 2F, F_meta). Crystals of [1-(4′-F₃CC₆F₄)-closo-1,2-C₂B₁₀H₁₁] suitable for a single-crystal X-ray diffraction study were grown from the slow evaporation of a 313–333 K petroleum ether solution of the product.

6. Refinement

Crystal data, data collection and structure refinement details are summarized in Table 2. The cage C atom (C2) not carrying the substituent was distinguished from B atoms by both the Vertex–Centroid Distance (McAnaw et al., 2013 ) and Boron–Hydrogen Distance (McAnaw et al., 2014 ) methods. Cage H atoms were located from difference-Fourier maps and allowed positional refinement, with U_iso(H) = 1.2U_eq(B or C). Five poorly fitting reflections were omitted which marginally decreased the R-factor and standard uncertainties from the previous refinement.

Table 2
Experimental details

Crystal data
Chemical formula	C₉H₁₁B₁₀F₇
M_r	360.28
Crystal system, space group	Orthorhombic, P2₁2₁2₁
Temperature (K)	120
a, b, c (Å)	6.7872 (2), 11.6926 (3), 19.4863 (5)
V (Å³)	1546.43 (7)
Z	4
Radiation type	Mo Kα
μ (mm⁻¹)	0.14
Crystal size (mm)	0.30 × 0.21 × 0.10

Data collection
Diffractometer	Rigaku Oxford Diffreaction SuperNova
Absorption correction	Multi-scan (CrysAlis PRO; Rigaku OD, 2018 )
T_min, T_max	0.907, 1.000
No. of measured, independent and observed [I > 2σ(I)] reflections	40258, 5615, 5190
R_int	0.041
(sin θ/λ)_max (Å⁻¹)	0.768

Refinement
R[F² > 2σ(F²)], wR(F²), S	0.039, 0.092, 1.15
No. of reflections	5615
No. of parameters	268
H-atom treatment	Only H-atom coordinates refined
Δρ_max, Δρ_min (e Å⁻³)	0.32, −0.24
Absolute structure	Flack x determined using 1991 quotients [(I⁺)−(I⁻)]/[(I⁺)+(I⁻)] (Parsons et al., 2013 )
Absolute structure parameter	−0.03 (14)
Computer programs: CrysAlis PRO (Rigaku OD, 2018), SHELXT (Sheldrick, 2015a ), SHELXL (Sheldrick, 2015b ) and OLEX2 (Dolomanov et al., 2009 ).

Supporting information

CCDC reference: 1905663

Crystal structure: contains datablock I. DOI: https://doi.org/10.1107/S2056989019004067/lh5894sup1.cif

Structure factors: contains datablock I. DOI: https://doi.org/10.1107/S2056989019004067/lh5894Isup2.hkl

Supporting information file. DOI: https://doi.org/10.1107/S2056989019004067/lh5894Isup3.mol

checkCIF report

Computing details top

Data collection: CrysAlis PRO (Rigaku OD, 2018); cell refinement: CrysAlis PRO (Rigaku OD, 2018); data reduction: CrysAlis PRO (Rigaku OD, 2018); program(s) used to solve structure: SHELXT (Sheldrick, 2015a); program(s) used to refine structure: SHELXL (Sheldrick, 2015b); molecular graphics: OLEX2 (Dolomanov et al., 2009); software used to prepare material for publication: OLEX2 (Dolomanov et al., 2009).

1-(2',3',5',6'-Tetrafluoro-4'-trifluoromethylphenyl)-closo-1,2-dicarbadodecaborane top

Crystal data top

C₉H₁₁B₁₀F₇	D_x = 1.547 Mg m⁻³
M_r = 360.28	Mo Kα radiation, λ = 0.71073 Å
Orthorhombic, P2₁2₁2₁	Cell parameters from 14204 reflections
a = 6.7872 (2) Å	θ = 3.6–32.3°
b = 11.6926 (3) Å	µ = 0.14 mm⁻¹
c = 19.4863 (5) Å	T = 120 K
V = 1546.43 (7) Å³	Block, colourless
Z = 4	0.30 × 0.21 × 0.10 mm
F(000) = 712

Data collection top

Rigaku Oxford Diffreaction SuperNova diffractometer	5615 independent reflections
Radiation source: micro-focus sealed X-ray tube, SuperNova (Mo) X-ray Source	5190 reflections with I > 2σ(I)
Mirror monochromator	R_int = 0.041
Detector resolution: 5.1574 pixels mm^-1	θ_max = 33.1°, θ_min = 3.2°
ω scans	h = −10→10
Absorption correction: multi-scan (CrysAlis PRO; Rigaku OD, 2018)	k = −17→17
T_min = 0.907, T_max = 1.000	l = −28→29
40258 measured reflections

Refinement top

Refinement on F²	Hydrogen site location: difference Fourier map
Least-squares matrix: full	Only H-atom coordinates refined
R[F² > 2σ(F²)] = 0.039	w = 1/[σ²(F_o²) + (0.0409P)² + 0.2387P] where P = (F_o² + 2F_c²)/3
wR(F²) = 0.092	(Δ/σ)_max < 0.001
S = 1.15	Δρ_max = 0.32 e Å⁻³
5615 reflections	Δρ_min = −0.24 e Å⁻³
268 parameters	Absolute structure: Flack x determined using 1991 quotients [(I⁺)-(I^-)]/[(I⁺)+(I^-)] (Parsons et al., 2013)
0 restraints	Absolute structure parameter: −0.03 (14)
Primary atom site location: dual

Special details top

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.

Fractional atomic coordinates and isotropic or equivalent isotropic displacement parameters (Å²) top

	x	y	z	U_iso*/U_eq
C1	0.4255 (2)	0.75630 (14)	0.63450 (7)	0.0127 (3)
C2	0.3379 (2)	0.84949 (14)	0.69108 (8)	0.0144 (3)
H2	0.239 (3)	0.825 (2)	0.7189 (11)	0.017*
B3	0.5657 (3)	0.79020 (16)	0.70696 (9)	0.0150 (3)
H3	0.569 (4)	0.731 (2)	0.7447 (11)	0.018*
B4	0.6746 (3)	0.78014 (17)	0.62414 (9)	0.0152 (3)
H4	0.760 (3)	0.7102 (19)	0.6185 (11)	0.018*
B5	0.4984 (3)	0.82791 (16)	0.56196 (9)	0.0157 (3)
H5	0.481 (3)	0.7834 (19)	0.5125 (11)	0.019*
B6	0.2792 (3)	0.86920 (16)	0.60596 (9)	0.0156 (3)
H6	0.137 (3)	0.848 (2)	0.5881 (11)	0.019*
B7	0.5140 (3)	0.93737 (17)	0.72239 (9)	0.0173 (3)
H7	0.498 (3)	0.960 (2)	0.7758 (11)	0.021*
B8	0.7317 (3)	0.89674 (17)	0.67875 (10)	0.0172 (3)
H8	0.868 (4)	0.904 (2)	0.7027 (11)	0.021*
B9	0.6915 (3)	0.92010 (17)	0.58946 (9)	0.0174 (3)
H9	0.810 (3)	0.940 (2)	0.5576 (11)	0.021*
B10	0.4473 (3)	0.97497 (17)	0.57793 (10)	0.0191 (3)
H10	0.411 (4)	1.030 (2)	0.5388 (11)	0.023*
C11	0.3333 (2)	0.63954 (14)	0.62898 (7)	0.0133 (3)
B11	0.3386 (3)	0.98580 (16)	0.66084 (10)	0.0178 (3)
H11	0.223 (4)	1.039 (2)	0.6735 (11)	0.021*
F12	0.06277 (15)	0.67898 (9)	0.70430 (5)	0.0194 (2)
C12	0.1573 (2)	0.60768 (14)	0.66176 (8)	0.0142 (3)
B12	0.5930 (3)	1.01793 (17)	0.65039 (10)	0.0185 (3)
H12	0.642 (4)	1.101 (2)	0.6567 (12)	0.022*
F13	−0.09989 (16)	0.48161 (9)	0.68394 (5)	0.0216 (2)
C13	0.0708 (3)	0.50228 (14)	0.65191 (8)	0.0160 (3)
C14	0.1543 (3)	0.41874 (14)	0.61068 (8)	0.0171 (3)
F15	0.4241 (2)	0.37422 (9)	0.53809 (6)	0.0269 (3)
C15	0.3300 (3)	0.44732 (14)	0.57878 (8)	0.0177 (3)
F16	0.58167 (16)	0.57283 (9)	0.55240 (5)	0.0215 (2)
C16	0.4149 (3)	0.55452 (14)	0.58724 (8)	0.0157 (3)
F17	−0.1264 (2)	0.31645 (11)	0.57675 (7)	0.0366 (3)
F18	0.0274 (2)	0.25723 (10)	0.66597 (6)	0.0341 (3)
F19	0.1512 (2)	0.23058 (11)	0.56619 (7)	0.0382 (3)
C141	0.0518 (3)	0.30462 (15)	0.60420 (9)	0.0227 (4)

Atomic displacement parameters (Å²) top

	U¹¹	U²²	U³³	U¹²	U¹³	U²³
C1	0.0121 (6)	0.0145 (7)	0.0115 (6)	0.0011 (5)	0.0001 (5)	0.0002 (5)
C2	0.0142 (6)	0.0147 (7)	0.0143 (6)	−0.0005 (6)	0.0025 (6)	−0.0028 (5)
B3	0.0150 (7)	0.0177 (8)	0.0125 (7)	0.0003 (6)	−0.0021 (6)	−0.0009 (6)
B4	0.0119 (7)	0.0192 (8)	0.0145 (7)	0.0015 (7)	0.0001 (6)	−0.0002 (6)
B5	0.0157 (7)	0.0186 (8)	0.0128 (7)	0.0018 (7)	−0.0001 (6)	0.0017 (6)
B6	0.0141 (8)	0.0162 (8)	0.0164 (8)	0.0034 (6)	−0.0007 (6)	0.0001 (6)
B7	0.0176 (8)	0.0184 (8)	0.0158 (7)	−0.0029 (7)	0.0014 (6)	−0.0030 (6)
B8	0.0139 (8)	0.0199 (8)	0.0179 (8)	−0.0027 (7)	0.0001 (6)	−0.0021 (7)
B9	0.0153 (8)	0.0201 (8)	0.0167 (8)	−0.0007 (7)	0.0025 (6)	0.0010 (6)
B10	0.0204 (8)	0.0186 (8)	0.0183 (8)	0.0024 (7)	0.0002 (7)	0.0040 (6)
C11	0.0138 (6)	0.0152 (7)	0.0111 (6)	0.0004 (6)	−0.0010 (5)	−0.0009 (5)
B11	0.0175 (8)	0.0150 (7)	0.0208 (8)	0.0016 (7)	0.0012 (7)	−0.0014 (7)
F12	0.0153 (4)	0.0195 (5)	0.0234 (5)	−0.0007 (4)	0.0064 (4)	−0.0067 (4)
C12	0.0150 (7)	0.0159 (7)	0.0116 (6)	0.0012 (6)	0.0001 (5)	−0.0020 (5)
B12	0.0171 (8)	0.0171 (8)	0.0213 (8)	−0.0013 (7)	0.0020 (7)	−0.0011 (7)
F13	0.0180 (5)	0.0231 (5)	0.0239 (5)	−0.0056 (4)	0.0047 (4)	−0.0001 (4)
C13	0.0164 (7)	0.0178 (7)	0.0137 (6)	−0.0014 (6)	0.0002 (6)	0.0007 (5)
C14	0.0230 (8)	0.0152 (7)	0.0131 (6)	−0.0013 (6)	−0.0033 (6)	−0.0001 (5)
F15	0.0349 (6)	0.0197 (5)	0.0262 (5)	0.0019 (5)	0.0096 (5)	−0.0102 (4)
C15	0.0244 (8)	0.0156 (7)	0.0130 (6)	0.0021 (6)	0.0018 (6)	−0.0028 (5)
F16	0.0204 (5)	0.0231 (5)	0.0211 (5)	−0.0007 (4)	0.0087 (4)	−0.0055 (4)
C16	0.0167 (7)	0.0169 (7)	0.0137 (6)	0.0007 (6)	0.0025 (6)	−0.0005 (5)
F17	0.0359 (7)	0.0292 (6)	0.0447 (7)	−0.0129 (5)	−0.0165 (6)	0.0038 (6)
F18	0.0577 (9)	0.0216 (5)	0.0229 (5)	−0.0110 (6)	−0.0015 (6)	0.0062 (4)
F19	0.0506 (8)	0.0214 (6)	0.0425 (7)	−0.0066 (6)	0.0098 (7)	−0.0142 (5)
C141	0.0311 (10)	0.0181 (8)	0.0188 (7)	−0.0056 (7)	−0.0030 (7)	0.0000 (6)

Geometric parameters (Å, º) top

C1—C2	1.660 (2)	B7—B11	1.782 (3)
C1—B3	1.748 (2)	B7—B12	1.773 (3)
C1—B4	1.726 (2)	B8—H8	1.04 (2)
C1—B5	1.716 (2)	B8—B9	1.782 (3)
C1—B6	1.743 (2)	B8—B12	1.789 (3)
C1—C11	1.506 (2)	B9—H9	1.04 (2)
C2—H2	0.91 (2)	B9—B10	1.792 (3)
C2—B3	1.723 (3)	B9—B12	1.779 (3)
C2—B6	1.721 (2)	B10—H10	1.03 (2)
C2—B7	1.690 (2)	B10—B11	1.781 (3)
C2—B11	1.699 (3)	B10—B12	1.796 (3)
B3—H3	1.01 (2)	C11—C12	1.405 (2)
B3—B4	1.779 (2)	C11—C16	1.399 (2)
B3—B7	1.782 (3)	B11—H11	1.03 (2)
B3—B8	1.767 (3)	B11—B12	1.779 (3)
B4—H4	1.01 (2)	F12—C12	1.3394 (18)
B4—B5	1.792 (3)	C12—C13	1.378 (2)
B4—B8	1.772 (3)	B12—H12	1.03 (2)
B4—B9	1.774 (3)	F13—C13	1.338 (2)
B5—H5	1.10 (2)	C13—C14	1.386 (2)
B5—B6	1.784 (3)	C14—C15	1.386 (3)
B5—B9	1.780 (3)	C14—C141	1.510 (2)
B5—B10	1.782 (3)	F15—C15	1.3294 (19)
B6—H6	1.06 (2)	C15—C16	1.389 (2)
B6—B10	1.769 (3)	F16—C16	1.3372 (19)
B6—B11	1.779 (3)	F17—C141	1.330 (2)
B7—H7	1.08 (2)	F18—C141	1.335 (2)
B7—B8	1.770 (3)	F19—C141	1.324 (2)

C2—C1—B3	60.65 (10)	B12—B7—B3	108.66 (13)
C2—C1—B4	108.82 (13)	B12—B7—H7	131.8 (13)
C2—C1—B5	109.28 (12)	B12—B7—B11	60.04 (11)
C2—C1—B6	60.71 (10)	B3—B8—B4	60.34 (10)
B4—C1—B3	61.60 (10)	B3—B8—B7	60.50 (11)
B4—C1—B6	113.49 (12)	B3—B8—H8	118.9 (13)
B5—C1—B3	113.44 (12)	B3—B8—B9	108.31 (13)
B5—C1—B4	62.76 (10)	B3—B8—B12	108.60 (14)
B5—C1—B6	62.08 (10)	B4—B8—H8	121.7 (13)
B6—C1—B3	113.34 (12)	B4—B8—B9	59.89 (10)
C11—C1—C2	119.58 (13)	B4—B8—B12	107.99 (13)
C11—C1—B3	119.30 (12)	B7—B8—B4	108.21 (13)
C11—C1—B4	123.05 (14)	B7—B8—H8	120.4 (13)
C11—C1—B5	120.23 (12)	B7—B8—B9	107.47 (13)
C11—C1—B6	115.29 (13)	B7—B8—B12	59.76 (11)
C1—C2—H2	117.1 (15)	B9—B8—H8	124.2 (13)
C1—C2—B3	62.21 (10)	B9—B8—B12	59.77 (11)
C1—C2—B6	62.01 (9)	B12—B8—H8	123.0 (13)
C1—C2—B7	112.67 (13)	B4—B9—B5	60.56 (10)
C1—C2—B11	112.60 (12)	B4—B9—B8	59.78 (11)
B3—C2—H2	115.4 (15)	B4—B9—H9	118.6 (13)
B6—C2—H2	116.6 (14)	B4—B9—B10	108.56 (13)
B6—C2—B3	115.76 (12)	B4—B9—B12	108.33 (13)
B7—C2—H2	119.7 (14)	B5—B9—B8	108.29 (13)
B7—C2—B3	62.93 (11)	B5—B9—H9	121.5 (13)
B7—C2—B6	115.47 (13)	B5—B9—B10	59.85 (11)
B7—C2—B11	63.45 (11)	B8—B9—H9	119.8 (12)
B11—C2—H2	120.2 (15)	B8—B9—B10	108.59 (13)
B11—C2—B3	115.93 (13)	B10—B9—H9	124.2 (13)
B11—C2—B6	62.67 (10)	B12—B9—B5	108.27 (13)
C1—B3—H3	116.6 (13)	B12—B9—B8	60.30 (11)
C1—B3—B4	58.57 (9)	B12—B9—H9	123.2 (13)
C1—B3—B7	104.36 (12)	B12—B9—B10	60.38 (11)
C1—B3—B8	104.81 (12)	B5—B10—B9	59.74 (11)
C2—B3—C1	57.14 (9)	B5—B10—H10	121.3 (13)
C2—B3—H3	115.2 (14)	B5—B10—B12	107.46 (13)
C2—B3—B4	103.69 (12)	B6—B10—B5	60.31 (10)
C2—B3—B7	57.65 (10)	B6—B10—B9	107.91 (13)
C2—B3—B8	103.45 (13)	B6—B10—H10	120.6 (14)
B4—B3—H3	127.5 (13)	B6—B10—B11	60.16 (11)
B4—B3—B7	107.38 (13)	B6—B10—B12	107.93 (13)
B7—B3—H3	122.7 (13)	B9—B10—H10	122.7 (14)
B8—B3—H3	134.0 (14)	B9—B10—B12	59.47 (11)
B8—B3—B4	59.97 (11)	B11—B10—B5	107.93 (13)
B8—B3—B7	59.82 (11)	B11—B10—B9	107.16 (13)
C1—B4—B3	59.83 (10)	B11—B10—H10	122.0 (13)
C1—B4—H4	116.4 (13)	B11—B10—B12	59.65 (11)
C1—B4—B5	58.35 (10)	B12—B10—H10	122.9 (14)
C1—B4—B8	105.56 (13)	C12—C11—C1	124.15 (14)
C1—B4—B9	104.88 (12)	C16—C11—C1	121.42 (14)
B3—B4—H4	113.0 (12)	C16—C11—C12	114.37 (15)
B3—B4—B5	108.39 (13)	C2—B11—B6	59.27 (10)
B5—B4—H4	124.2 (12)	C2—B11—B7	58.03 (10)
B8—B4—B3	59.69 (10)	C2—B11—B10	104.42 (13)
B8—B4—H4	124.3 (13)	C2—B11—H11	119.0 (13)
B8—B4—B5	108.19 (14)	C2—B11—B12	103.91 (13)
B8—B4—B9	60.34 (11)	B6—B11—B7	108.20 (13)
B9—B4—B3	108.15 (13)	B6—B11—B10	59.59 (11)
B9—B4—H4	132.0 (13)	B6—B11—H11	116.0 (13)
B9—B4—B5	59.87 (11)	B6—B11—B12	108.23 (13)
C1—B5—B4	58.89 (10)	B7—B11—H11	122.5 (13)
C1—B5—H5	117.4 (12)	B10—B11—B7	108.13 (13)
C1—B5—B6	59.70 (10)	B10—B11—H11	125.1 (13)
C1—B5—B9	105.07 (12)	B12—B11—B7	59.71 (11)
C1—B5—B10	105.72 (12)	B12—B11—B10	60.59 (11)
B4—B5—H5	121.0 (12)	B12—B11—H11	129.4 (13)
B6—B5—B4	108.42 (12)	F12—C12—C11	121.58 (14)
B6—B5—H5	117.4 (12)	F12—C12—C13	116.01 (14)
B9—B5—B4	59.57 (11)	C13—C12—C11	122.40 (14)
B9—B5—H5	128.9 (12)	B7—B12—B8	59.59 (11)
B9—B5—B6	107.79 (13)	B7—B12—B9	107.47 (14)
B9—B5—B10	60.41 (11)	B7—B12—B10	107.89 (14)
B10—B5—B4	108.22 (13)	B7—B12—B11	60.24 (11)
B10—B5—H5	126.0 (12)	B7—B12—H12	120.2 (13)
B10—B5—B6	59.49 (11)	B8—B12—B10	108.13 (13)
C1—B6—B5	58.22 (9)	B8—B12—H12	122.4 (14)
C1—B6—H6	116.7 (13)	B9—B12—B8	59.94 (11)
C1—B6—B10	105.12 (13)	B9—B12—B10	60.16 (11)
C1—B6—B11	105.05 (12)	B9—B12—H12	124.1 (14)
C2—B6—C1	57.27 (9)	B10—B12—H12	122.3 (13)
C2—B6—B5	103.54 (12)	B11—B12—B8	107.95 (13)
C2—B6—H6	119.8 (12)	B11—B12—B9	107.79 (13)
C2—B6—B10	104.01 (13)	B11—B12—B10	59.76 (11)
C2—B6—B11	58.06 (10)	B11—B12—H12	119.9 (14)
B5—B6—H6	122.8 (12)	C12—C13—C14	122.48 (15)
B10—B6—B5	60.20 (11)	F13—C13—C12	117.73 (14)
B10—B6—H6	130.7 (12)	F13—C13—C14	119.80 (15)
B10—B6—B11	60.25 (11)	C13—C14—C15	116.21 (15)
B11—B6—B5	107.92 (13)	C13—C14—C141	118.91 (16)
B11—B6—H6	125.7 (13)	C15—C14—C141	124.88 (16)
C2—B7—B3	59.42 (10)	C14—C15—C16	121.42 (15)
C2—B7—H7	115.0 (13)	F15—C15—C14	121.74 (16)
C2—B7—B8	104.70 (13)	F15—C15—C16	116.84 (15)
C2—B7—B11	58.52 (11)	C15—C16—C11	123.09 (15)
C2—B7—B12	104.55 (13)	F16—C16—C11	121.11 (15)
B3—B7—H7	114.5 (13)	F16—C16—C15	115.80 (14)
B3—B7—B11	108.96 (13)	F17—C141—C14	111.14 (15)
B8—B7—B3	59.68 (11)	F17—C141—F18	107.02 (17)
B8—B7—H7	127.8 (13)	F18—C141—C14	110.39 (14)
B8—B7—B11	108.64 (13)	F19—C141—C14	112.96 (16)
B8—B7—B12	60.65 (11)	F19—C141—F17	107.84 (15)
B11—B7—H7	120.4 (13)	F19—C141—F18	107.23 (16)

C1—C2—B3—B4	37.23 (11)	B5—B6—B11—C2	−95.07 (13)
C1—C2—B3—B7	139.34 (13)	B5—B6—B11—B7	−62.62 (16)
C1—C2—B3—B8	99.11 (12)	B5—B6—B11—B10	38.15 (12)
C1—C2—B6—B5	−36.99 (11)	B5—B6—B11—B12	0.60 (17)
C1—C2—B6—B10	−99.16 (13)	B5—B9—B10—B6	37.70 (12)
C1—C2—B6—B11	−139.86 (13)	B5—B9—B10—B11	101.12 (14)
C1—C2—B7—B3	−38.66 (12)	B5—B9—B10—B12	138.37 (13)
C1—C2—B7—B8	1.77 (17)	B5—B9—B12—B7	63.77 (16)
C1—C2—B7—B11	104.88 (14)	B5—B9—B12—B8	101.08 (14)
C1—C2—B7—B12	64.68 (16)	B5—B9—B12—B10	−37.22 (12)
C1—C2—B11—B6	38.07 (12)	B5—B9—B12—B11	0.22 (17)
C1—C2—B11—B7	−104.99 (14)	B5—B10—B11—C2	2.09 (18)
C1—C2—B11—B10	−2.38 (18)	B5—B10—B11—B6	−38.21 (13)
C1—C2—B11—B12	−65.08 (16)	B5—B10—B11—B7	62.68 (17)
C1—B3—B4—B5	33.61 (12)	B5—B10—B11—B12	100.14 (15)
C1—B3—B4—B8	134.37 (13)	B5—B10—B12—B7	−63.30 (16)
C1—B3—B4—B9	97.01 (13)	B5—B10—B12—B8	−0.31 (17)
C1—B3—B7—C2	34.40 (11)	B5—B10—B12—B9	36.98 (12)
C1—B3—B7—B8	−98.99 (13)	B5—B10—B12—B11	−100.94 (14)
C1—B3—B7—B11	2.00 (16)	B6—C1—C2—B3	−146.76 (13)
C1—B3—B7—B12	−61.82 (16)	B6—C1—C2—B7	−107.80 (14)
C1—B3—B8—B4	−39.12 (11)	B6—C1—C2—B11	−38.34 (13)
C1—B3—B8—B7	98.22 (13)	B6—C1—B3—C2	31.37 (12)
C1—B3—B8—B9	−1.92 (17)	B6—C1—B3—B4	−105.08 (14)
C1—B3—B8—B12	61.45 (15)	B6—C1—B3—B7	−3.25 (17)
C1—B4—B5—B6	34.71 (12)	B6—C1—B3—B8	−65.28 (16)
C1—B4—B5—B9	134.96 (13)	B6—C1—B4—B3	104.84 (14)
C1—B4—B5—B10	97.73 (13)	B6—C1—B4—B5	−37.07 (13)
C1—B4—B8—B3	39.91 (12)	B6—C1—B4—B8	65.00 (15)
C1—B4—B8—B7	1.53 (17)	B6—C1—B4—B9	2.23 (16)
C1—B4—B8—B9	−98.53 (13)	B6—C1—B5—B4	141.27 (13)
C1—B4—B8—B12	−61.69 (15)	B6—C1—B5—B9	102.08 (14)
C1—B4—B9—B5	−38.56 (11)	B6—C1—B5—B10	39.17 (12)
C1—B4—B9—B8	99.67 (13)	B6—C1—C11—C12	−59.64 (19)
C1—B4—B9—B10	−1.49 (16)	B6—C1—C11—C16	117.44 (16)
C1—B4—B9—B12	62.52 (15)	B6—C2—B3—C1	−32.51 (13)
C1—B5—B6—C2	36.54 (11)	B6—C2—B3—B4	4.73 (18)
C1—B5—B6—B10	135.11 (13)	B6—C2—B3—B7	106.83 (15)
C1—B5—B6—B11	96.93 (13)	B6—C2—B3—B8	66.60 (15)
C1—B5—B9—B4	38.86 (12)	B6—C2—B7—B3	−107.29 (14)
C1—B5—B9—B8	1.55 (17)	B6—C2—B7—B8	−66.86 (17)
C1—B5—B9—B10	−99.78 (13)	B6—C2—B7—B11	36.25 (13)
C1—B5—B9—B12	−62.32 (16)	B6—C2—B7—B12	−3.95 (18)
C1—B5—B10—B6	−39.27 (12)	B6—C2—B11—B7	−143.06 (13)
C1—B5—B10—B9	98.67 (13)	B6—C2—B11—B10	−40.46 (12)
C1—B5—B10—B11	−1.13 (17)	B6—C2—B11—B12	−103.15 (14)
C1—B5—B10—B12	61.81 (16)	B6—B5—B9—B4	101.33 (13)
C1—B6—B10—B5	38.42 (11)	B6—B5—B9—B8	64.01 (16)
C1—B6—B10—B9	0.97 (16)	B6—B5—B9—B10	−37.31 (12)
C1—B6—B10—B11	−98.94 (13)	B6—B5—B9—B12	0.15 (17)
C1—B6—B10—B12	−61.87 (16)	B6—B5—B10—B9	137.94 (13)
C1—B6—B11—C2	−34.17 (11)	B6—B5—B10—B11	38.14 (13)
C1—B6—B11—B7	−1.71 (17)	B6—B5—B10—B12	101.08 (14)
C1—B6—B11—B10	99.06 (13)	B6—B10—B11—C2	40.29 (12)
C1—B6—B11—B12	61.50 (15)	B6—B10—B11—B7	100.88 (14)
C1—C11—C12—F12	−3.8 (2)	B6—B10—B11—B12	138.35 (14)
C1—C11—C12—C13	175.70 (15)	B6—B10—B12—B7	0.34 (18)
C1—C11—C16—C15	−177.46 (15)	B6—B10—B12—B8	63.34 (16)
C1—C11—C16—F16	2.2 (2)	B6—B10—B12—B9	100.62 (14)
C2—C1—B3—B4	−136.45 (13)	B6—B10—B12—B11	−37.30 (12)
C2—C1—B3—B7	−34.62 (11)	B6—B11—B12—B7	−100.86 (14)
C2—C1—B3—B8	−96.65 (13)	B6—B11—B12—B8	−63.82 (16)
C2—C1—B4—B3	39.38 (12)	B6—B11—B12—B9	−0.51 (17)
C2—C1—B4—B5	−102.53 (13)	B6—B11—B12—B10	37.12 (12)
C2—C1—B4—B8	−0.46 (16)	B7—C2—B3—C1	−139.34 (13)
C2—C1—B4—B9	−63.23 (14)	B7—C2—B3—B4	−102.11 (13)
C2—C1—B5—B4	101.79 (14)	B7—C2—B3—B8	−40.23 (12)
C2—C1—B5—B6	−39.48 (12)	B7—C2—B6—C1	103.31 (15)
C2—C1—B5—B9	62.60 (15)	B7—C2—B6—B5	66.33 (16)
C2—C1—B5—B10	−0.31 (17)	B7—C2—B6—B10	4.15 (17)
C2—C1—B6—B5	136.52 (13)	B7—C2—B6—B11	−36.54 (14)
C2—C1—B6—B10	97.15 (13)	B7—C2—B11—B6	143.06 (13)
C2—C1—B6—B11	34.51 (12)	B7—C2—B11—B10	102.61 (14)
C2—C1—C11—C12	9.6 (2)	B7—C2—B11—B12	39.91 (12)
C2—C1—C11—C16	−173.29 (14)	B7—B3—B4—C1	−96.50 (13)
C2—B3—B4—C1	−36.56 (11)	B7—B3—B4—B5	−62.89 (16)
C2—B3—B4—B5	−2.95 (17)	B7—B3—B4—B8	37.87 (12)
C2—B3—B4—B8	97.81 (13)	B7—B3—B4—B9	0.51 (17)
C2—B3—B4—B9	60.45 (15)	B7—B3—B8—B4	−137.34 (13)
C2—B3—B7—B8	−133.39 (13)	B7—B3—B8—B9	−100.14 (14)
C2—B3—B7—B11	−32.40 (12)	B7—B3—B8—B12	−36.78 (12)
C2—B3—B7—B12	−96.22 (14)	B7—B8—B9—B4	−101.31 (14)
C2—B3—B8—B4	−98.20 (12)	B7—B8—B9—B5	−63.66 (16)
C2—B3—B8—B7	39.14 (11)	B7—B8—B9—B10	−0.21 (18)
C2—B3—B8—B9	−61.01 (15)	B7—B8—B9—B12	37.39 (13)
C2—B3—B8—B12	2.36 (15)	B7—B8—B12—B9	−137.90 (14)
C2—B6—B10—B5	97.77 (13)	B7—B8—B12—B10	−100.52 (14)
C2—B6—B10—B9	60.32 (15)	B7—B8—B12—B11	−37.33 (12)
C2—B6—B10—B11	−39.59 (12)	B7—B11—B12—B8	37.04 (12)
C2—B6—B10—B12	−2.52 (16)	B7—B11—B12—B9	100.35 (14)
C2—B6—B11—B7	32.45 (12)	B7—B11—B12—B10	137.98 (14)
C2—B6—B11—B10	133.22 (14)	B8—B3—B4—C1	−134.37 (13)
C2—B6—B11—B12	95.67 (14)	B8—B3—B4—B5	−100.76 (15)
C2—B7—B8—B3	−40.30 (12)	B8—B3—B4—B9	−37.35 (13)
C2—B7—B8—B4	−1.99 (17)	B8—B3—B7—C2	133.39 (13)
C2—B7—B8—B9	61.26 (16)	B8—B3—B7—B11	100.99 (14)
C2—B7—B8—B12	98.65 (14)	B8—B3—B7—B12	37.17 (13)
C2—B7—B11—B6	−32.94 (12)	B8—B4—B5—C1	−97.42 (13)
C2—B7—B11—B10	−96.00 (14)	B8—B4—B5—B6	−62.71 (16)
C2—B7—B11—B12	−133.85 (13)	B8—B4—B5—B9	37.53 (12)
C2—B7—B12—B8	−98.91 (14)	B8—B4—B5—B10	0.31 (17)
C2—B7—B12—B9	−61.44 (16)	B8—B4—B9—B5	−138.23 (13)
C2—B7—B12—B10	2.03 (17)	B8—B4—B9—B10	−101.17 (14)
C2—B7—B12—B11	39.45 (12)	B8—B4—B9—B12	−37.15 (13)
C2—B11—B12—B7	−39.07 (12)	B8—B7—B11—C2	96.17 (14)
C2—B11—B12—B8	−2.03 (16)	B8—B7—B11—B6	63.23 (16)
C2—B11—B12—B9	61.28 (15)	B8—B7—B11—B10	0.17 (18)
C2—B11—B12—B10	98.91 (13)	B8—B7—B11—B12	−37.68 (12)
B3—C1—C2—B6	146.76 (13)	B8—B7—B12—B9	37.47 (13)
B3—C1—C2—B7	38.96 (13)	B8—B7—B12—B10	100.94 (14)
B3—C1—C2—B11	108.42 (14)	B8—B7—B12—B11	138.36 (13)
B3—C1—B4—B5	−141.90 (13)	B8—B9—B10—B5	−100.80 (14)
B3—C1—B4—B8	−39.84 (12)	B8—B9—B10—B6	−63.10 (17)
B3—C1—B4—B9	−102.61 (13)	B8—B9—B10—B11	0.31 (18)
B3—C1—B5—B4	36.27 (13)	B8—B9—B10—B12	37.56 (13)
B3—C1—B5—B6	−105.00 (14)	B8—B9—B12—B7	−37.31 (13)
B3—C1—B5—B9	−2.92 (17)	B8—B9—B12—B10	−138.30 (14)
B3—C1—B5—B10	−65.83 (16)	B8—B9—B12—B11	−100.85 (14)
B3—C1—B6—C2	−31.35 (12)	B9—B4—B5—C1	−134.96 (13)
B3—C1—B6—B5	105.17 (14)	B9—B4—B5—B6	−100.25 (14)
B3—C1—B6—B10	65.80 (16)	B9—B4—B5—B10	−37.23 (12)
B3—C1—B6—B11	3.16 (17)	B9—B4—B8—B3	138.43 (13)
B3—C1—C11—C12	80.50 (19)	B9—B4—B8—B7	100.05 (14)
B3—C1—C11—C16	−102.42 (17)	B9—B4—B8—B12	36.83 (12)
B3—C2—B6—C1	32.57 (13)	B9—B5—B6—C1	−97.39 (13)
B3—C2—B6—B5	−4.42 (17)	B9—B5—B6—C2	−60.85 (15)
B3—C2—B6—B10	−66.59 (16)	B9—B5—B6—B10	37.72 (12)
B3—C2—B6—B11	−107.29 (15)	B9—B5—B6—B11	−0.46 (17)
B3—C2—B7—B8	40.43 (12)	B9—B5—B10—B6	−137.94 (13)
B3—C2—B7—B11	143.54 (13)	B9—B5—B10—B11	−99.80 (14)
B3—C2—B7—B12	103.34 (13)	B9—B5—B10—B12	−36.86 (12)
B3—C2—B11—B6	107.02 (14)	B9—B8—B12—B7	137.90 (14)
B3—C2—B11—B7	−36.04 (12)	B9—B8—B12—B10	37.38 (12)
B3—C2—B11—B10	66.56 (16)	B9—B8—B12—B11	100.58 (14)
B3—C2—B11—B12	3.86 (17)	B9—B10—B11—C2	−60.88 (16)
B3—B4—B5—C1	−34.20 (12)	B9—B10—B11—B6	−101.18 (14)
B3—B4—B5—B6	0.50 (17)	B9—B10—B11—B7	−0.30 (18)
B3—B4—B5—B9	100.75 (14)	B9—B10—B11—B12	37.17 (13)
B3—B4—B5—B10	63.53 (16)	B9—B10—B12—B7	−100.28 (14)
B3—B4—B8—B7	−38.38 (12)	B9—B10—B12—B8	−37.29 (12)
B3—B4—B8—B9	−138.43 (13)	B9—B10—B12—B11	−137.92 (13)
B3—B4—B8—B12	−101.60 (14)	B10—B5—B6—C1	−135.11 (13)
B3—B4—B9—B5	−101.17 (14)	B10—B5—B6—C2	−98.57 (13)
B3—B4—B9—B8	37.07 (12)	B10—B5—B6—B11	−38.18 (12)
B3—B4—B9—B10	−64.10 (16)	B10—B5—B9—B4	138.64 (13)
B3—B4—B9—B12	−0.08 (17)	B10—B5—B9—B8	101.33 (14)
B3—B7—B8—B4	38.31 (12)	B10—B5—B9—B12	37.46 (12)
B3—B7—B8—B9	101.56 (14)	B10—B6—B11—C2	−133.22 (14)
B3—B7—B8—B12	138.95 (13)	B10—B6—B11—B7	−100.77 (14)
B3—B7—B11—C2	32.75 (12)	B10—B6—B11—B12	−37.56 (13)
B3—B7—B11—B6	−0.19 (17)	B10—B9—B12—B7	100.99 (14)
B3—B7—B11—B10	−63.25 (17)	B10—B9—B12—B8	138.30 (14)
B3—B7—B11—B12	−101.10 (14)	B10—B9—B12—B11	37.45 (12)
B3—B7—B12—B8	−36.76 (13)	B10—B11—B12—B7	−137.98 (14)
B3—B7—B12—B9	0.71 (18)	B10—B11—B12—B8	−100.94 (14)
B3—B7—B12—B10	64.18 (17)	B10—B11—B12—B9	−37.62 (12)
B3—B7—B12—B11	101.60 (14)	C11—C1—C2—B3	109.06 (15)
B3—B8—B9—B4	−37.40 (12)	C11—C1—C2—B6	−104.18 (15)
B3—B8—B9—B5	0.26 (18)	C11—C1—C2—B7	148.02 (14)
B3—B8—B9—B10	63.71 (17)	C11—C1—C2—B11	−142.52 (14)
B3—B8—B9—B12	101.31 (15)	C11—C1—B3—C2	−109.50 (15)
B3—B8—B12—B7	37.09 (12)	C11—C1—B3—B4	114.05 (16)
B3—B8—B12—B9	−100.81 (14)	C11—C1—B3—B7	−144.12 (14)
B3—B8—B12—B10	−63.42 (16)	C11—C1—B3—B8	153.86 (14)
B3—B8—B12—B11	−0.23 (17)	C11—C1—B4—B3	−108.18 (15)
B4—C1—C2—B3	−39.81 (12)	C11—C1—B4—B5	109.92 (15)
B4—C1—C2—B6	106.95 (13)	C11—C1—B4—B8	−148.02 (14)
B4—C1—C2—B7	−0.85 (17)	C11—C1—B4—B9	149.21 (13)
B4—C1—C2—B11	68.61 (16)	C11—C1—B5—B4	−114.20 (16)
B4—C1—B3—C2	136.45 (13)	C11—C1—B5—B6	104.53 (15)
B4—C1—B3—B7	101.83 (14)	C11—C1—B5—B9	−153.40 (14)
B4—C1—B3—B8	39.80 (12)	C11—C1—B5—B10	143.70 (14)
B4—C1—B5—B6	−141.27 (13)	C11—C1—B6—C2	111.15 (14)
B4—C1—B5—B9	−39.19 (12)	C11—C1—B6—B5	−112.33 (14)
B4—C1—B5—B10	−102.10 (14)	C11—C1—B6—B10	−151.70 (13)
B4—C1—B6—C2	−99.18 (14)	C11—C1—B6—B11	145.66 (13)
B4—C1—B6—B5	37.34 (13)	C11—C12—C13—F13	−178.03 (14)
B4—C1—B6—B10	−2.04 (17)	C11—C12—C13—C14	2.1 (2)
B4—C1—B6—B11	−64.68 (16)	B11—C2—B3—C1	−103.11 (14)
B4—C1—C11—C12	153.91 (15)	B11—C2—B3—B4	−65.87 (16)
B4—C1—C11—C16	−29.0 (2)	B11—C2—B3—B7	36.23 (13)
B4—B3—B7—C2	95.46 (13)	B11—C2—B3—B8	−4.00 (16)
B4—B3—B7—B8	−37.93 (12)	B11—C2—B6—C1	139.86 (13)
B4—B3—B7—B11	63.06 (16)	B11—C2—B6—B5	102.87 (14)
B4—B3—B7—B12	−0.76 (17)	B11—C2—B6—B10	40.70 (12)
B4—B3—B8—B7	137.34 (13)	B11—C2—B7—B3	−143.54 (13)
B4—B3—B8—B9	37.20 (12)	B11—C2—B7—B8	−103.11 (14)
B4—B3—B8—B12	100.56 (14)	B11—C2—B7—B12	−40.20 (13)
B4—B5—B6—C1	−34.37 (12)	B11—B6—B10—B5	137.36 (13)
B4—B5—B6—C2	2.17 (16)	B11—B6—B10—B9	99.91 (14)
B4—B5—B6—B10	100.74 (14)	B11—B6—B10—B12	37.08 (13)
B4—B5—B6—B11	62.56 (16)	B11—B7—B8—B3	−101.53 (14)
B4—B5—B9—B8	−37.31 (13)	B11—B7—B8—B4	−63.22 (17)
B4—B5—B9—B10	−138.64 (13)	B11—B7—B8—B9	0.02 (17)
B4—B5—B9—B12	−101.18 (14)	B11—B7—B8—B12	37.41 (13)
B4—B5—B10—B6	−101.08 (13)	B11—B7—B12—B8	−138.36 (13)
B4—B5—B10—B9	36.86 (12)	B11—B7—B12—B9	−100.89 (14)
B4—B5—B10—B11	−62.94 (17)	B11—B7—B12—B10	−37.42 (13)
B4—B5—B10—B12	0.00 (17)	B11—B10—B12—B7	37.64 (13)
B4—B8—B9—B5	37.66 (13)	B11—B10—B12—B8	100.63 (14)
B4—B8—B9—B10	101.10 (14)	B11—B10—B12—B9	137.92 (13)
B4—B8—B9—B12	138.70 (14)	F12—C12—C13—F13	1.5 (2)
B4—B8—B12—B7	101.01 (14)	F12—C12—C13—C14	−178.38 (14)
B4—B8—B12—B9	−36.89 (12)	C12—C11—C16—C15	−0.1 (2)
B4—B8—B12—B10	0.50 (17)	C12—C11—C16—F16	179.54 (14)
B4—B8—B12—B11	63.69 (16)	C12—C13—C14—C15	−0.8 (2)
B4—B9—B10—B5	−37.37 (12)	C12—C13—C14—C141	178.50 (15)
B4—B9—B10—B6	0.33 (17)	B12—B7—B8—B3	−138.95 (13)
B4—B9—B10—B11	63.74 (17)	B12—B7—B8—B4	−100.64 (14)
B4—B9—B10—B12	100.99 (14)	B12—B7—B8—B9	−37.39 (13)
B4—B9—B12—B7	−0.39 (18)	B12—B7—B11—C2	133.85 (13)
B4—B9—B12—B8	36.92 (12)	B12—B7—B11—B6	100.91 (14)
B4—B9—B12—B10	−101.38 (14)	B12—B7—B11—B10	37.85 (13)
B4—B9—B12—B11	−63.93 (16)	B12—B8—B9—B4	−138.70 (14)
B5—C1—C2—B3	−106.66 (13)	B12—B8—B9—B5	−101.05 (14)
B5—C1—C2—B6	40.10 (12)	B12—B8—B9—B10	−37.60 (13)
B5—C1—C2—B7	−67.70 (16)	B12—B9—B10—B5	−138.37 (13)
B5—C1—C2—B11	1.76 (17)	B12—B9—B10—B6	−100.67 (14)
B5—C1—B3—C2	99.73 (14)	B12—B9—B10—B11	−37.25 (13)
B5—C1—B3—B4	−36.72 (13)	B12—B10—B11—C2	−98.05 (14)
B5—C1—B3—B7	65.11 (16)	B12—B10—B11—B6	−138.35 (14)
B5—C1—B3—B8	3.09 (17)	B12—B10—B11—B7	−37.46 (13)
B5—C1—B4—B3	141.90 (13)	F13—C13—C14—C15	179.35 (14)
B5—C1—B4—B8	102.07 (14)	F13—C13—C14—C141	−1.4 (2)
B5—C1—B4—B9	39.29 (12)	C13—C14—C15—F15	179.88 (15)
B5—C1—B6—C2	−136.52 (13)	C13—C14—C15—C16	−0.9 (2)
B5—C1—B6—B10	−39.37 (12)	C13—C14—C141—F17	61.8 (2)
B5—C1—B6—B11	−102.01 (13)	C13—C14—C141—F18	−56.8 (2)
B5—C1—C11—C12	−130.74 (16)	C13—C14—C141—F19	−176.85 (15)
B5—C1—C11—C16	46.3 (2)	C14—C15—C16—C11	1.4 (3)
B5—B4—B8—B3	101.10 (14)	C14—C15—C16—F16	−178.31 (15)
B5—B4—B8—B7	62.72 (16)	F15—C15—C16—C11	−179.38 (15)
B5—B4—B8—B9	−37.33 (12)	F15—C15—C16—F16	1.0 (2)
B5—B4—B8—B12	−0.50 (17)	C15—C14—C141—F17	−119.01 (19)
B5—B4—B9—B8	138.23 (13)	C15—C14—C141—F18	122.40 (19)
B5—B4—B9—B10	37.07 (12)	C15—C14—C141—F19	2.4 (2)
B5—B4—B9—B12	101.08 (14)	C16—C11—C12—F12	178.93 (14)
B5—B6—B10—B9	−37.45 (12)	C16—C11—C12—C13	−1.6 (2)
B5—B6—B10—B11	−137.36 (13)	C141—C14—C15—F15	0.7 (3)
B5—B6—B10—B12	−100.28 (14)	C141—C14—C15—C16	179.88 (16)

Hydrogen-bond geometry (Å, º) top

D—H···A	D—H	H···A	D···A	D—H···A
C2—H2···F12	0.91 (2)	2.11 (2)	2.7436 (19)	126 (2)

Acknowledgements

We thank Dr G. Nicol (University of Edinburgh) for the data collection.

Funding information

Funding for this research was provided by: Engineering and Physical Sciences Research Council (studentship to A. Benton).

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