(1,2-Dicarba-closo-dodeca­boran­yl)trimethyl­methanaminium iodide

Lee, J.-D.; Han, W.-S.; Suh, I.-H.; Kang, S.O.

doi:10.1107/S160053681102928X

organic compounds

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ISSN: 2056-9890

Volume 67| Part 8| August 2011| Page o2148

doi:10.1107/S160053681102928X

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(1,2-Dicarba-closo-dodecaboranyl)trimethylmethanaminium iodide

Jong-Dae Lee,^a Won-Sik Han,^b Il-Hwan Suh ^c and Sang Ook Kang ^b ^*

^aDepartment of Chemistry, College of Natural Sciences, Chosun University, Gwangju 501-759, Republic of Korea, ^bDepartment of Advanced Materials Chemistry, Korea University, Sejong Campus, Chungnam 339-700, Republic of Korea, and ^cReSEAT Program, Korea Institute of Science and Technology Information, 335 Eoeun-dong, Yuseong-gu, Daejeon 305-806, Republic of Korea
^*Correspondence e-mail: sangok@korea.ac.kr

(Received 7 July 2011; accepted 20 July 2011; online 30 July 2011)

The title compound, [1-(CH₃)₃NCH₂-1,2-C₂B₁₀H₁₁]⁺·I⁻ or C₆H₂₂B₁₀N⁺·I⁻, was obtained by the reaction of (1,2-dicarba-closo-dodecaboranyl)dimethylmethanamine with methyl iodide. The asymmetric unit contains two iodide anions and two (o-carboranyl)tetramethylammonium cations. The bond lengths and angles in the carborane cage are within normal ranges, but the N—C_methylene—C_cage angle is very large [120.2 (2)°] because of repulsion between the carborane and tetramethylammonium units. In the crystal, ions are linked through C—H⋯I hydrogen bonds.

Related literature

For background to quaternaryammonium salts, see: Wiebcke & Felsche (2001 ); Zhang et al. (2004 ); Carr et al. (2006 ). For background to o-carborane structures, see: Davidson et al. (1996 ); Lee et al. (2000 ); Welch et al. (2001 ). For a related structure, see: Lee et al. (1999 ).

Experimental

Crystal data

C₆H₂₂B₁₀N⁺·I⁻
M_r = 343.25
Monoclinic, P 2₁ /n
a = 6.7435 (14) Å
b = 25.013 (5) Å
c = 18.694 (4) Å
β = 94.800 (4)°
V = 3142.2 (11) Å³
Z = 8
Mo Kα radiation
μ = 2.01 mm⁻¹
T = 293 K
0.28 × 0.25 × 0.20 mm

Data collection

Bruker SMART 1000 CCD diffractometer
Absorption correction: multi-scan (SADABS; Sheldrick, 2008 ) T_min = 0.603, T_max = 0.689
32138 measured reflections
7772 independent reflections
5834 reflections with I > 2σ(I)
R_int = 0.032

Refinement

R[F² > 2σ(F²)] = 0.031
wR(F²) = 0.076
S = 1.02
7772 reflections
325 parameters
H-atom parameters constrained
Δρ_max = 0.88 e Å⁻³
Δρ_min = −0.92 e Å⁻³

Table 1
Hydrogen-bond geometry (Å, °)

D—H⋯A	D—H	H⋯A	D⋯A	D—H⋯A
C2—H2⋯I1	1.10	3.03	3.946 (3)	141
C3—H3B⋯I1	0.97	2.94	3.904 (3)	172
C23—H23B⋯I1	0.97	2.96	3.921 (3)	170

Data collection: SMART (Bruker, 1999 ); cell refinement: SAINT-Plus (Bruker, 1999); data reduction: SAINT-Plus; program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: ORTEP-3 for Windows (Farrugia, 1997 ); software used to prepare material for publication: SHELXL97.

Supporting information

Crystal structure: contains datablocks global, I. DOI: 10.1107/S160053681102928X/dn2706sup1.cif

Structure factors: contains datablock I. DOI: 10.1107/S160053681102928X/dn2706Isup2.hkl

checkCIF report

Comment top

N,N-dimethyl-(1,2-dicarba-closo-dodecaboranyl)methanamine is a useful intramolecular coordinating ligand for many different metals (Lee et al., 1999, 2000). Since the starting material is an oil, it could not be characterized by X-ray diffraction. However, we found that the corresponding methyl iodide forms crystals suitable for crystallographic study. We report here the synthesis and structure of the title compound (I).

In (I), shown in Fig. 1 and Table 1, the average bond length N—C [1.508 (2) Å] in the tetramethylammonium unit is similar to 1.492 (5) Å in an o-carboranyl organogallium compound [Cl₃Ga][N(CH₃)₂CH₂-1,2-C₂B₁₀H₁₁] (Lee et al., 1999), 1.505 (2) Å in a benzyltrimethylammonium hydroxide trihydrate system (Wiebcke & Felsche, 2001) and 1.478 (5) Å in a tetramethylammonium pentaborate 0.25-hydrate compound (Zhang et al., 2004).

The average bond angle of C_cage—C_methylene—N [120.3 (1)°] in (I) is almost same as 120.5 (6)° of o-carboranyl organogallium compound (Lee et al., 1999). Their large difference from the tetrahedral angle might be attributable to the repulsion between the carborane and tetramethylammonium unit. On the other hand, Carr and co-workers reported far smaller angle [113.5 (2)°] for the same methylene unit of [H₃NCH₂C₂B₁₀H₁₁][H₃CCH₂CB₁₁H₁₁] with a smaller methylammonium unit than tetramethylammonium one. Compared with these two values, it would seem the above-mentioned repulsion logic would be affirmatively accepted.

The carborane moiety forms an icosahedrons consisting of twenty triangles with sides of the average bond length of C_cage—C_cage 1.659 (3), C_cage—B_cage 1.713 (1), and B_cage—B_cage 1.771 (1) Å. All of the compounds containing mono-substituted o-carboranes (Lee et al., 1999; Welch, et al., 2001) including unsubstituted ortho-, meta-, and para-carboranes with hexamethylphosphoramide (Davidson, et al., 1996) surveyed by our group so far exhibit the same trend of d(C_cage—C_cage) < d(C_cage—B_cage) < d(B_cage—B_cage). Since the boron atom has one valence electron less than carbon, this result confirms that the bond lengths will become shorter when more electrons participate in bond formation.

As shown in Table 1 and Figure 1, I1 atom participates in two intramolecular and an intermolecular hydrogen bonds, while I2 atom has only weak interaction with the closest interatomic distances I2···H3Aⁱ 3.126 Å and I2···H5Aⁱⁱ 3.126 Å [symmetry code: (i) 0.5 - x, 1/2 + y, 1.5 - z; (ii) -1/2 + x, 1.5 - y, 1/2 + z]. The shortest interdimer's distance B26···H24ⁱⁱⁱ 2.912 Å [symmetry code: (iii) -1 + x, y, z] suggests the dimer's packing of (I) is governed by van der Waals forces.

Related literature top

For background to quaternaryammonium salts, see: Wiebcke & Felsche (2001); Zhang et al. (2004); Carr et al. (2006). For background to o-carborane structures, see: Davidson et al. (1996); Lee et al. (2000); Welch et al. (2001). For a related structure, see: Lee et al. (1999).

Experimental top

A mixture of N,N-dimethyl-(1,2-dicarba-closo-dodecaboranyl)methanamine (0.2 g, 1.0 mmol) and 1.2 equiv of methyl iodide (0.17 g, 1.2 mmol) was dissolved in distilled diethyl ether (10 ml) and stirred at room temperature for 30 min. The resulting white solid was collected by filtration and washed with cold diethyl ether (quantitative yield, m.p. 389 K). The purity was checked by ¹H, ¹³C, and ¹¹B NMR spectroscopies. Suitable single crystals of (I) were obtained by recrystallization from acetone.

Computing details top

Data collection: SMART (Bruker, 1999); cell refinement: SAINT-Plus (Bruker, 1999); data reduction: SAINT-Plus (Bruker, 1999); program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: ORTEP-3 for Windows (Farrugia, 1997); software used to prepare material for publication: SHELXL97 (Sheldrick, 2008).

Figures top

Fig. 1. The molecular structure of (I), showing the atom-numbering scheme. Displacement ellipsoids are drawn at the 30% probability level, and H atoms (except for H2, H3B, and H23B) have been omitted for clarity. Dashed lines indicate intra- and intermolecular hydrogen bonds.

(1,2-Dicarba-closo-dodecaboranyl)trimethylmethanaminium iodide top

Crystal data top

C₆H₂₂B₁₀N⁺·I⁻	F(000) = 1344
M_r = 343.25	D_x = 1.451 Mg m⁻³
Monoclinic, P2₁/n	Mo Kα radiation, λ = 0.71073 Å
Hall symbol: -P 2yn	Cell parameters from 5251 reflections
a = 6.7435 (14) Å	θ = 2.3–27.3°
b = 25.013 (5) Å	µ = 2.01 mm⁻¹
c = 18.694 (4) Å	T = 293 K
β = 94.800 (4)°	Block, colourless
V = 3142.2 (11) Å³	0.28 × 0.25 × 0.20 mm
Z = 8

Data collection top

Bruker SMART 1000 CCD diffractometer	7772 independent reflections
Radiation source: fine-focus sealed tube	5834 reflections with I > 2σ(I)
Graphite monochromator	R_int = 0.032
ω scans	θ_max = 28.3°, θ_min = 1.4°
Absorption correction: multi-scan (SADABS; Sheldrick, 2008)	h = −8→8
T_min = 0.603, T_max = 0.689	k = −33→33
32138 measured reflections	l = −24→24

Refinement top

Refinement on F²	Primary atom site location: structure-invariant direct methods
Least-squares matrix: full	Secondary atom site location: difference Fourier map
R[F² > 2σ(F²)] = 0.031	Hydrogen site location: inferred from neighbouring sites
wR(F²) = 0.076	H-atom parameters constrained
S = 1.02	w = 1/[σ²(F_o²) + (0.0267P)² + 2.9488P] where P = (F_o² + 2F_c²)/3
7772 reflections	(Δ/σ)_max = 0.002
325 parameters	Δρ_max = 0.88 e Å⁻³
0 restraints	Δρ_min = −0.92 e Å⁻³

Crystal data top

C₆H₂₂B₁₀N⁺·I⁻	V = 3142.2 (11) Å³
M_r = 343.25	Z = 8
Monoclinic, P2₁/n	Mo Kα radiation
a = 6.7435 (14) Å	µ = 2.01 mm⁻¹
b = 25.013 (5) Å	T = 293 K
c = 18.694 (4) Å	0.28 × 0.25 × 0.20 mm
β = 94.800 (4)°

Data collection top

Bruker SMART 1000 CCD diffractometer	7772 independent reflections
Absorption correction: multi-scan (SADABS; Sheldrick, 2008)	5834 reflections with I > 2σ(I)
T_min = 0.603, T_max = 0.689	R_int = 0.032
32138 measured reflections

Refinement top

R[F² > 2σ(F²)] = 0.031	0 restraints
wR(F²) = 0.076	H-atom parameters constrained
S = 1.02	Δρ_max = 0.88 e Å⁻³
7772 reflections	Δρ_min = −0.92 e Å⁻³
325 parameters

Special details top

Geometry. All e.s.d.'s (except the e.s.d. in the dihedral angle between two l.s. planes) are estimated using the full covariance matrix. The cell e.s.d.'s are taken into account individually in the estimation of e.s.d.'s in distances, angles and torsion angles; correlations between e.s.d.'s in cell parameters are only used when they are defined by crystal symmetry. An approximate (isotropic) treatment of cell e.s.d.'s is used for estimating e.s.d.'s involving l.s. planes.

Refinement. Refinement of F² against ALL reflections. The weighted R-factor wR and goodness of fit S are based on F², conventional R-factors R are based on F, with F set to zero for negative F². The threshold expression of F² > σ(F²) is used only for calculating R-factors(gt) etc. and is not relevant to the choice of reflections for refinement. R-factors based on F² are statistically about twice as large as those based on F, and R- factors based on ALL data will be even larger.

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

	x	y	z	U_iso*/U_eq
I2	0.30391 (3)	0.913655 (9)	0.909132 (12)	0.05540 (7)
I1	0.26909 (3)	0.657927 (8)	0.774753 (12)	0.04975 (7)
N1	0.6119 (4)	0.55189 (9)	0.62825 (12)	0.0392 (5)
B3	0.5023 (5)	0.46207 (12)	0.79957 (17)	0.0363 (6)
H3	0.3559	0.4472	0.7779	0.044*
B4	0.7252 (5)	0.44574 (12)	0.76026 (17)	0.0356 (6)
H4	0.7240	0.4198	0.7127	0.043*
B5	0.8919 (5)	0.50059 (13)	0.77262 (18)	0.0385 (7)
H5	0.9993	0.5100	0.7333	0.046*
B6	0.7713 (5)	0.55209 (13)	0.81841 (17)	0.0406 (7)
H6	0.7968	0.5948	0.8088	0.049*
B7	0.6790 (5)	0.42083 (12)	0.84662 (17)	0.0404 (7)
H7	0.6493	0.3783	0.8559	0.048*
B8	0.5593 (5)	0.47206 (13)	0.89249 (18)	0.0431 (7)
H8	0.4497	0.4635	0.9313	0.052*
B9	0.7252 (6)	0.52692 (14)	0.90438 (18)	0.0462 (8)
H9	0.7227	0.5536	0.9511	0.055*
B10	0.9492 (6)	0.51054 (15)	0.86573 (19)	0.0490 (8)
H10	1.0944	0.5262	0.8874	0.059*
B11	0.9206 (5)	0.44426 (14)	0.82976 (19)	0.0449 (8)
H11	1.0474	0.4168	0.8281	0.054*
B12	0.8182 (6)	0.46069 (14)	0.91206 (18)	0.0480 (8)
H12	0.8790	0.4440	0.9638	0.058*
C1	0.6407 (4)	0.50998 (9)	0.75779 (13)	0.0307 (5)
C2	0.5473 (4)	0.52448 (10)	0.83484 (14)	0.0373 (6)
H2	0.4198	0.5518	0.8356	0.045*
C3	0.5144 (4)	0.53300 (10)	0.69337 (14)	0.0353 (6)
H3A	0.4176	0.5060	0.6774	0.042*
H3B	0.4406	0.5630	0.7106	0.042*
C4	0.7509 (5)	0.59801 (12)	0.64407 (18)	0.0549 (8)
H4A	0.7942	0.6116	0.5999	0.082*
H4B	0.8643	0.5862	0.6744	0.082*
H4C	0.6833	0.6257	0.6679	0.082*
C5	0.7167 (5)	0.50697 (12)	0.59283 (16)	0.0512 (8)
H5A	0.7591	0.5191	0.5478	0.077*
H5B	0.6272	0.4773	0.5846	0.077*
H5C	0.8305	0.4959	0.6235	0.077*
C6	0.4426 (5)	0.57103 (14)	0.57671 (17)	0.0558 (8)
H6A	0.3784	0.6009	0.5973	0.084*
H6B	0.3483	0.5426	0.5676	0.084*
H6C	0.4935	0.5818	0.5325	0.084*
N2	0.7834 (3)	0.77280 (8)	0.79247 (11)	0.0325 (5)
B23	0.8766 (5)	0.67804 (12)	0.96808 (17)	0.0367 (7)
H23	0.9569	0.6459	0.9426	0.044*
B24	0.9750 (5)	0.74312 (13)	0.97941 (17)	0.0380 (7)
H24	1.1216	0.7534	0.9615	0.046*
B25	0.7765 (6)	0.78988 (13)	0.97298 (18)	0.0479 (8)
H25	0.7942	0.8304	0.9514	0.058*
B26	0.5520 (5)	0.75335 (18)	0.9567 (2)	0.0550 (10)
H26	0.4227	0.7695	0.9239	0.066*
B27	0.6239 (8)	0.7764 (2)	1.0435 (2)	0.0782 (16)
H27	0.5411	0.8084	1.0682	0.094*
B28	0.8867 (7)	0.76998 (15)	1.05814 (19)	0.0594 (11)
H28	0.9769	0.7979	1.0927	0.071*
B29	0.9465 (5)	0.70112 (13)	1.05485 (17)	0.0389 (7)
H29	1.0750	0.6841	1.0872	0.047*
B30	0.7242 (5)	0.66515 (15)	1.03832 (18)	0.0453 (8)
H30	0.7053	0.6244	1.0587	0.054*
B31	0.5269 (6)	0.7114 (2)	1.0320 (2)	0.0712 (14)
H31	0.3797	0.7005	1.0488	0.085*
B32	0.7311 (6)	0.72198 (17)	1.09454 (19)	0.0555 (10)
H32	0.7188	0.7188	1.1527	0.067*
C21	0.7687 (3)	0.73285 (9)	0.92250 (13)	0.0281 (5)
C22	0.6242 (4)	0.68780 (13)	0.95729 (16)	0.0488 (8)
H22	0.5352	0.6600	0.9221	0.059*
C23	0.7767 (4)	0.72499 (9)	0.84162 (13)	0.0309 (5)
H23A	0.8930	0.7033	0.8348	0.037*
H23B	0.6613	0.7039	0.8248	0.037*
C24	0.6028 (4)	0.80804 (11)	0.79378 (16)	0.0439 (7)
H24A	0.4848	0.7869	0.7839	0.066*
H24B	0.6074	0.8355	0.7580	0.066*
H24C	0.6009	0.8242	0.8403	0.066*
C25	0.7839 (5)	0.74947 (13)	0.71782 (15)	0.0486 (7)
H25A	0.6646	0.7291	0.7070	0.073*
H25B	0.8977	0.7266	0.7156	0.073*
H25C	0.7899	0.7779	0.6836	0.073*
C26	0.9719 (4)	0.80439 (12)	0.80762 (16)	0.0450 (7)
H26A	0.9709	0.8345	0.7757	0.067*
H26B	1.0843	0.7821	0.8004	0.067*
H26C	0.9808	0.8168	0.8564	0.067*

Atomic displacement parameters (Å²) top

	U¹¹	U²²	U³³	U¹²	U¹³	U²³
I2	0.05902 (14)	0.04948 (13)	0.05873 (14)	0.00517 (10)	0.01109 (10)	−0.00694 (10)
I1	0.04172 (11)	0.04153 (11)	0.06601 (14)	0.00482 (8)	0.00458 (9)	−0.00515 (9)
N1	0.0525 (14)	0.0311 (11)	0.0343 (12)	−0.0003 (10)	0.0058 (10)	0.0047 (9)
B3	0.0390 (16)	0.0297 (14)	0.0411 (17)	−0.0052 (12)	0.0085 (13)	0.0027 (12)
B4	0.0421 (17)	0.0274 (14)	0.0384 (16)	0.0028 (12)	0.0097 (13)	−0.0001 (12)
B5	0.0339 (16)	0.0387 (16)	0.0433 (17)	−0.0013 (13)	0.0058 (13)	0.0018 (13)
B6	0.0488 (19)	0.0333 (15)	0.0399 (17)	−0.0108 (13)	0.0057 (14)	−0.0052 (13)
B7	0.0510 (19)	0.0300 (15)	0.0406 (17)	−0.0011 (13)	0.0054 (14)	0.0077 (13)
B8	0.054 (2)	0.0395 (17)	0.0371 (17)	−0.0033 (14)	0.0116 (15)	0.0043 (13)
B9	0.065 (2)	0.0397 (17)	0.0338 (17)	−0.0077 (16)	0.0063 (15)	−0.0031 (13)
B10	0.048 (2)	0.052 (2)	0.0456 (19)	−0.0099 (16)	−0.0047 (15)	0.0051 (16)
B11	0.0425 (18)	0.0448 (18)	0.0473 (19)	0.0059 (14)	0.0033 (15)	0.0075 (15)
B12	0.060 (2)	0.0464 (19)	0.0371 (18)	−0.0033 (16)	−0.0004 (15)	0.0065 (14)
C1	0.0362 (13)	0.0259 (12)	0.0307 (13)	−0.0020 (10)	0.0070 (10)	−0.0003 (10)
C2	0.0451 (15)	0.0326 (13)	0.0357 (14)	0.0003 (11)	0.0122 (12)	−0.0015 (11)
C3	0.0398 (14)	0.0322 (13)	0.0344 (14)	0.0025 (11)	0.0058 (11)	0.0013 (10)
C4	0.071 (2)	0.0380 (16)	0.0564 (19)	−0.0159 (15)	0.0067 (16)	0.0079 (14)
C5	0.071 (2)	0.0469 (17)	0.0379 (16)	0.0065 (15)	0.0173 (15)	−0.0019 (13)
C6	0.074 (2)	0.0516 (18)	0.0401 (17)	0.0082 (16)	−0.0035 (15)	0.0089 (14)
N2	0.0334 (11)	0.0323 (11)	0.0321 (11)	0.0008 (9)	0.0039 (9)	0.0047 (9)
B23	0.0446 (17)	0.0276 (14)	0.0379 (16)	0.0026 (12)	0.0026 (13)	0.0054 (12)
B24	0.0312 (15)	0.0415 (17)	0.0402 (17)	−0.0075 (12)	−0.0050 (12)	0.0089 (13)
B25	0.072 (2)	0.0325 (16)	0.0386 (18)	0.0116 (16)	0.0014 (16)	−0.0033 (13)
B26	0.0347 (17)	0.088 (3)	0.0447 (19)	0.0240 (18)	0.0151 (15)	0.0210 (19)
B27	0.103 (4)	0.092 (3)	0.043 (2)	0.061 (3)	0.026 (2)	0.007 (2)
B28	0.097 (3)	0.0415 (19)	0.0372 (19)	0.001 (2)	−0.0105 (19)	−0.0030 (15)
B29	0.0345 (16)	0.0450 (18)	0.0363 (16)	−0.0003 (13)	−0.0032 (13)	0.0074 (13)
B30	0.0448 (18)	0.053 (2)	0.0371 (17)	−0.0124 (15)	−0.0004 (14)	0.0158 (15)
B31	0.0376 (19)	0.126 (4)	0.053 (2)	0.019 (2)	0.0188 (17)	0.039 (2)
B32	0.063 (2)	0.073 (3)	0.0321 (17)	0.020 (2)	0.0106 (16)	0.0080 (17)
C21	0.0240 (11)	0.0290 (12)	0.0314 (12)	−0.0008 (9)	0.0026 (9)	0.0026 (10)
C22	0.0415 (16)	0.065 (2)	0.0392 (16)	−0.0214 (14)	−0.0028 (12)	0.0161 (14)
C23	0.0347 (13)	0.0274 (12)	0.0307 (13)	−0.0005 (10)	0.0035 (10)	0.0020 (10)
C24	0.0394 (15)	0.0400 (15)	0.0521 (17)	0.0115 (12)	0.0030 (13)	0.0123 (13)
C25	0.067 (2)	0.0497 (17)	0.0295 (14)	0.0054 (15)	0.0049 (13)	0.0047 (12)
C26	0.0378 (15)	0.0455 (16)	0.0516 (17)	−0.0081 (12)	0.0034 (13)	0.0124 (13)

Geometric parameters (Å, º) top

N1—C4	1.500 (4)	N2—C26	1.503 (3)
N1—C3	1.507 (3)	N2—C24	1.505 (3)
N1—C5	1.510 (4)	N2—C23	1.511 (3)
N1—C6	1.509 (4)	N2—C25	1.513 (3)
B3—C2	1.712 (4)	B23—C22	1.714 (4)
B3—C1	1.743 (4)	B23—C21	1.741 (4)
B3—B7	1.756 (5)	B23—B29	1.749 (4)
B3—B8	1.765 (5)	B23—B30	1.763 (5)
B3—B4	1.775 (4)	B23—B24	1.764 (4)
B3—H3	1.1000	B23—H23	1.1000
B4—C1	1.704 (4)	B24—C21	1.699 (4)
B4—B11	1.772 (5)	B24—B28	1.766 (5)
B4—B5	1.776 (4)	B24—B25	1.774 (5)
B4—B7	1.782 (4)	B24—B29	1.782 (4)
B4—H4	1.1000	B24—H24	1.1000
B5—C1	1.710 (4)	B25—C21	1.709 (4)
B5—B10	1.769 (5)	B25—B26	1.772 (6)
B5—B11	1.769 (5)	B25—B28	1.771 (5)
B5—B6	1.780 (5)	B25—B27	1.772 (6)
B5—H5	1.1000	B25—H25	1.1000
B6—C2	1.712 (4)	B26—C22	1.710 (5)
B6—C1	1.733 (4)	B26—C21	1.722 (4)
B6—B10	1.767 (5)	B26—B27	1.751 (6)
B6—B9	1.778 (5)	B26—B31	1.774 (5)
B6—H6	1.1000	B26—H26	1.1000
B7—B8	1.773 (5)	B27—B31	1.757 (8)
B7—B12	1.783 (5)	B27—B32	1.779 (6)
B7—B11	1.784 (5)	B27—B28	1.778 (7)
B7—H7	1.1000	B27—H27	1.1000
B8—C2	1.695 (4)	B28—B32	1.768 (6)
B8—B9	1.773 (5)	B28—B29	1.771 (5)
B8—B12	1.776 (5)	B28—H28	1.1000
B8—H8	1.1000	B29—B30	1.753 (5)
B9—C2	1.695 (5)	B29—B32	1.765 (5)
B9—B12	1.773 (5)	B29—H29	1.1000
B9—B10	1.776 (5)	B30—C22	1.703 (4)
B9—H9	1.1000	B30—B31	1.761 (6)
B10—B11	1.794 (5)	B30—B32	1.766 (6)
B10—B12	1.793 (5)	B30—H30	1.1000
B10—H10	1.1000	B31—C22	1.699 (5)
B11—B12	1.786 (5)	B31—B32	1.750 (6)
B11—H11	1.1000	B31—H31	1.1000
B12—H12	1.1000	B32—H32	1.1000
C1—C3	1.528 (4)	C21—C23	1.530 (3)
C1—C2	1.660 (3)	C21—C22	1.658 (4)
C2—H2	1.1000	C22—H22	1.1000
C3—H3A	0.9700	C23—H23A	0.9700
C3—H3B	0.9700	C23—H23B	0.9700
C4—H4A	0.9600	C24—H24A	0.9600
C4—H4B	0.9600	C24—H24B	0.9600
C4—H4C	0.9600	C24—H24C	0.9600
C5—H5A	0.9600	C25—H25A	0.9600
C5—H5B	0.9600	C25—H25B	0.9600
C5—H5C	0.9600	C25—H25C	0.9600
C6—H6A	0.9600	C26—H26A	0.9600
C6—H6B	0.9600	C26—H26B	0.9600
C6—H6C	0.9600	C26—H26C	0.9600

C4—N1—C3	112.9 (2)	C26—N2—C24	111.2 (2)
C4—N1—C5	110.5 (2)	C26—N2—C23	111.7 (2)
C3—N1—C5	111.9 (2)	C24—N2—C23	112.83 (19)
C4—N1—C6	108.0 (2)	C26—N2—C25	108.0 (2)
C3—N1—C6	104.9 (2)	C24—N2—C25	107.8 (2)
C5—N1—C6	108.2 (2)	C23—N2—C25	105.0 (2)
C2—B3—C1	57.41 (15)	C22—B23—C21	57.34 (16)
C2—B3—B7	104.6 (2)	C22—B23—B29	104.5 (2)
C1—B3—B7	105.2 (2)	C21—B23—B29	105.3 (2)
C2—B3—B8	58.33 (17)	C22—B23—B30	58.61 (18)
C1—B3—B8	105.3 (2)	C21—B23—B30	105.2 (2)
B7—B3—B8	60.48 (19)	B29—B23—B30	59.89 (18)
C2—B3—B4	103.9 (2)	C22—B23—B24	104.0 (2)
C1—B3—B4	57.94 (15)	C21—B23—B24	57.98 (15)
B7—B3—B4	60.62 (18)	B29—B23—B24	60.96 (18)
B8—B3—B4	108.5 (2)	B30—B23—B24	108.4 (2)
C2—B3—H3	125.1	C22—B23—H23	125.0
C1—B3—H3	124.4	C21—B23—H23	124.4
B7—B3—H3	122.5	B29—B23—H23	122.6
B8—B3—H3	121.7	B30—B23—H23	121.8
B4—B3—H3	122.3	B24—B23—H23	122.2
C1—B4—B3	60.09 (16)	C21—B24—B23	60.33 (16)
C1—B4—B11	105.4 (2)	C21—B24—B28	105.3 (2)
B3—B4—B11	107.7 (2)	B23—B24—B28	107.5 (2)
C1—B4—B5	58.79 (16)	C21—B24—B25	58.90 (17)
B3—B4—B5	108.5 (2)	B23—B24—B25	109.0 (2)
B11—B4—B5	59.82 (18)	B28—B24—B25	60.0 (2)
C1—B4—B7	105.7 (2)	C21—B24—B29	105.6 (2)
B3—B4—B7	59.15 (18)	B23—B24—B29	59.10 (17)
B11—B4—B7	60.25 (19)	B28—B24—B29	59.90 (19)
B5—B4—B7	108.0 (2)	B25—B24—B29	108.2 (2)
C1—B4—H4	123.7	C21—B24—H24	123.7
B3—B4—H4	121.4	B23—B24—H24	121.2
B11—B4—H4	122.4	B28—B24—H24	122.6
B5—B4—H4	121.5	B25—B24—H24	121.1
B7—B4—H4	122.4	B29—B24—H24	122.5
C1—B5—B10	105.8 (2)	C21—B25—B26	59.24 (19)
C1—B5—B11	105.3 (2)	C21—B25—B28	104.7 (2)
B10—B5—B11	60.9 (2)	B26—B25—B28	107.3 (3)
C1—B5—B4	58.50 (16)	C21—B25—B24	58.36 (16)
B10—B5—B4	108.7 (2)	B26—B25—B24	107.5 (2)
B11—B5—B4	59.96 (18)	B28—B25—B24	59.8 (2)
C1—B5—B6	59.51 (17)	C21—B25—B27	105.0 (3)
B10—B5—B6	59.7 (2)	B26—B25—B27	59.2 (3)
B11—B5—B6	108.5 (2)	B28—B25—B27	60.2 (2)
B4—B5—B6	108.2 (2)	B24—B25—B27	107.8 (2)
C1—B5—H5	124.2	C21—B25—H25	124.4
B10—B5—H5	121.7	B26—B25—H25	121.9
B11—B5—H5	121.9	B28—B25—H25	122.5
B4—B5—H5	121.5	B24—B25—H25	121.8
B6—B5—H5	121.3	B27—B25—H25	122.4
C2—B6—C1	57.59 (15)	C22—B26—C21	57.77 (17)
C2—B6—B10	104.2 (2)	C22—B26—B27	104.6 (3)
C1—B6—B10	104.9 (2)	C21—B26—B27	105.3 (3)
C2—B6—B9	58.07 (18)	C22—B26—B25	104.8 (2)
C1—B6—B9	105.0 (2)	C21—B26—B25	58.53 (17)
B10—B6—B9	60.1 (2)	B27—B26—B25	60.4 (3)
C2—B6—B5	103.9 (2)	C22—B26—B31	58.3 (2)
C1—B6—B5	58.22 (16)	C21—B26—B31	105.0 (2)
B10—B6—B5	59.8 (2)	B27—B26—B31	59.8 (3)
B9—B6—B5	107.5 (2)	B25—B26—B31	107.8 (3)
C2—B6—H6	125.0	C22—B26—H26	124.5
C1—B6—H6	124.2	C21—B26—H26	124.0
B10—B6—H6	123.0	B27—B26—H26	122.8
B9—B6—H6	122.2	B25—B26—H26	122.2
B5—B6—H6	122.8	B31—B26—H26	122.3
B3—B7—B8	60.02 (18)	B26—B27—B31	60.8 (3)
B3—B7—B12	108.1 (2)	B26—B27—B25	60.4 (2)
B8—B7—B12	59.9 (2)	B31—B27—B25	108.6 (3)
B3—B7—B11	108.1 (2)	B26—B27—B32	108.3 (3)
B8—B7—B11	107.9 (2)	B31—B27—B32	59.3 (2)
B12—B7—B11	60.1 (2)	B25—B27—B32	108.0 (3)
B3—B7—B4	60.23 (17)	B26—B27—B28	107.9 (3)
B8—B7—B4	107.9 (2)	B31—B27—B28	107.0 (3)
B12—B7—B4	107.7 (2)	B25—B27—B28	59.9 (2)
B11—B7—B4	59.58 (18)	B32—B27—B28	59.6 (2)
B3—B7—H7	121.5	B26—B27—H27	121.2
B8—B7—H7	121.8	B31—B27—H27	121.8
B12—B7—H7	121.7	B25—B27—H27	121.3
B11—B7—H7	121.8	B32—B27—H27	122.0
B4—B7—H7	121.9	B28—B27—H27	122.4
C2—B8—B3	59.26 (17)	B24—B28—B32	108.4 (3)
C2—B8—B9	58.46 (18)	B24—B28—B25	60.21 (19)
B3—B8—B9	108.4 (2)	B32—B28—B25	108.6 (3)
C2—B8—B7	104.5 (2)	B24—B28—B29	60.50 (19)
B3—B8—B7	59.50 (18)	B32—B28—B29	59.8 (2)
B9—B8—B7	108.2 (2)	B25—B28—B29	108.8 (2)
C2—B8—B12	104.4 (2)	B24—B28—B27	107.9 (3)
B3—B8—B12	108.0 (2)	B32—B28—B27	60.2 (3)
B9—B8—B12	59.9 (2)	B25—B28—B27	59.9 (2)
B7—B8—B12	60.3 (2)	B29—B28—B27	108.0 (3)
C2—B8—H8	124.9	B24—B28—H28	121.5
B3—B8—H8	121.3	B32—B28—H28	121.5
B9—B8—H8	121.3	B25—B28—H28	121.3
B7—B8—H8	122.4	B29—B28—H28	121.5
B12—B8—H8	122.4	B27—B28—H28	121.9
C2—B9—B8	58.48 (18)	B23—B29—B30	60.46 (19)
C2—B9—B12	104.6 (2)	B23—B29—B32	108.7 (2)
B8—B9—B12	60.1 (2)	B30—B29—B32	60.3 (2)
C2—B9—B10	104.5 (2)	B23—B29—B28	108.0 (2)
B8—B9—B10	108.6 (2)	B30—B29—B28	108.2 (3)
B12—B9—B10	60.7 (2)	B32—B29—B28	60.0 (2)
C2—B9—B6	59.03 (18)	B23—B29—B24	59.94 (17)
B8—B9—B6	108.5 (2)	B30—B29—B24	108.1 (2)
B12—B9—B6	108.5 (2)	B32—B29—B24	107.8 (2)
B10—B9—B6	59.65 (19)	B28—B29—B24	59.6 (2)
C2—B9—H9	125.0	B23—B29—H29	121.4
B8—B9—H9	121.2	B30—B29—H29	121.4
B12—B9—H9	122.1	B32—B29—H29	121.5
B10—B9—H9	122.2	B28—B29—H29	121.9
B6—B9—H9	121.2	B24—B29—H29	122.0
B6—B10—B5	60.46 (18)	C22—B30—B29	104.8 (2)
B6—B10—B9	60.2 (2)	C22—B30—B23	59.26 (18)
B5—B10—B9	108.0 (2)	B29—B30—B23	59.65 (18)
B6—B10—B11	108.0 (2)	C22—B30—B31	58.7 (2)
B5—B10—B11	59.54 (19)	B29—B30—B31	107.7 (3)
B9—B10—B11	107.3 (2)	B23—B30—B31	108.3 (2)
B6—B10—B12	108.0 (3)	C22—B30—B32	104.5 (3)
B5—B10—B12	107.5 (2)	B29—B30—B32	60.2 (2)
B9—B10—B12	59.6 (2)	B23—B30—B32	107.9 (2)
B11—B10—B12	59.7 (2)	B31—B30—B32	59.5 (2)
B6—B10—H10	121.3	C22—B30—H30	124.6
B5—B10—H10	121.8	B29—B30—H30	122.5
B9—B10—H10	122.0	B23—B30—H30	121.3
B11—B10—H10	122.2	B31—B30—H30	121.6
B12—B10—H10	122.0	B32—B30—H30	122.6
B5—B11—B4	60.22 (18)	C22—B31—B32	105.4 (2)
B5—B11—B7	108.2 (2)	C22—B31—B27	104.9 (3)
B4—B11—B7	60.16 (18)	B32—B31—B27	61.0 (3)
B5—B11—B12	107.8 (2)	C22—B31—B30	58.9 (2)
B4—B11—B12	108.0 (2)	B32—B31—B30	60.4 (2)
B7—B11—B12	59.93 (19)	B27—B31—B30	109.1 (3)
B5—B11—B10	59.54 (19)	C22—B31—B26	59.0 (2)
B4—B11—B10	107.8 (2)	B32—B31—B26	108.6 (3)
B7—B11—B10	108.0 (2)	B27—B31—B26	59.5 (2)
B12—B11—B10	60.1 (2)	B30—B31—B26	108.6 (2)
B5—B11—H11	121.8	C22—B31—H31	124.6
B4—B11—H11	121.6	B32—B31—H31	121.7
B7—B11—H11	121.6	B27—B31—H31	122.0
B12—B11—H11	121.7	B30—B31—H31	120.8
B10—B11—H11	121.9	B26—B31—H31	121.4
B9—B12—B8	59.9 (2)	B31—B32—B29	107.7 (3)
B9—B12—B7	107.7 (2)	B31—B32—B30	60.1 (2)
B8—B12—B7	59.76 (19)	B29—B32—B30	59.54 (19)
B9—B12—B11	107.8 (2)	B31—B32—B28	107.7 (3)
B8—B12—B11	107.7 (2)	B29—B32—B28	60.2 (2)
B7—B12—B11	59.96 (19)	B30—B32—B28	107.7 (2)
B9—B12—B10	59.8 (2)	B31—B32—B27	59.7 (3)
B8—B12—B10	107.7 (2)	B29—B32—B27	108.2 (3)
B7—B12—B10	108.0 (2)	B30—B32—B27	107.9 (3)
B11—B12—B10	60.2 (2)	B28—B32—B27	60.1 (3)
B9—B12—H12	121.9	B31—B32—H32	121.9
B8—B12—H12	122.0	B29—B32—H32	121.8
B7—B12—H12	121.8	B30—B32—H32	121.9
B11—B12—H12	121.8	B28—B32—H32	121.7
B10—B12—H12	121.7	B27—B32—H32	121.6
C3—C1—C2	112.0 (2)	C23—C21—C22	111.8 (2)
C3—C1—B4	122.7 (2)	C23—C21—B24	122.9 (2)
C2—C1—B4	109.45 (19)	C22—C21—B24	109.54 (19)
C3—C1—B5	131.2 (2)	C23—C21—B25	130.6 (2)
C2—C1—B5	109.4 (2)	C22—C21—B25	110.0 (2)
B4—C1—B5	62.71 (17)	B24—C21—B25	62.74 (19)
C3—C1—B6	120.4 (2)	C23—C21—B26	120.5 (2)
C2—C1—B6	60.57 (16)	C22—C21—B26	60.8 (2)
B4—C1—B6	113.9 (2)	B24—C21—B26	113.5 (2)
B5—C1—B6	62.28 (18)	B25—C21—B26	62.2 (2)
C3—C1—B3	109.2 (2)	C23—C21—B23	109.54 (19)
C2—C1—B3	60.35 (16)	C22—C21—B23	60.52 (17)
B4—C1—B3	61.97 (16)	B24—C21—B23	61.69 (17)
B5—C1—B3	113.2 (2)	B25—C21—B23	113.2 (2)
B6—C1—B3	112.8 (2)	B26—C21—B23	112.7 (2)
C1—C2—B9	112.2 (2)	C21—C22—B30	111.9 (2)
C1—C2—B8	112.4 (2)	C21—C22—B31	111.5 (3)
B9—C2—B8	63.06 (19)	B30—C22—B31	62.3 (2)
C1—C2—B6	61.84 (16)	C21—C22—B26	61.45 (18)
B9—C2—B6	62.90 (19)	B30—C22—B26	114.6 (3)
B8—C2—B6	115.5 (2)	B31—C22—B26	62.7 (2)
C1—C2—B3	62.24 (16)	C21—C22—B23	62.14 (16)
B9—C2—B3	114.8 (2)	B30—C22—B23	62.13 (19)
B8—C2—B3	62.41 (18)	B31—C22—B23	113.6 (2)
B6—C2—B3	115.4 (2)	B26—C22—B23	114.6 (2)
C1—C2—H2	120.0	C21—C22—H22	120.3
B9—C2—H2	118.2	B30—C22—H22	118.5
B8—C2—H2	118.0	B31—C22—H22	118.9
B6—C2—H2	117.0	B26—C22—H22	117.5
B3—C2—H2	117.3	B23—C22—H22	117.8
N1—C3—C1	120.2 (2)	N2—C23—C21	120.3 (2)
N1—C3—H3A	107.3	N2—C23—H23A	107.3
C1—C3—H3A	107.3	C21—C23—H23A	107.3
N1—C3—H3B	107.3	N2—C23—H23B	107.3
C1—C3—H3B	107.3	C21—C23—H23B	107.3
H3A—C3—H3B	106.9	H23A—C23—H23B	106.9
N1—C4—H4A	109.5	N2—C24—H24A	109.5
N1—C4—H4B	109.5	N2—C24—H24B	109.5
H4A—C4—H4B	109.5	H24A—C24—H24B	109.5
N1—C4—H4C	109.5	N2—C24—H24C	109.5
H4A—C4—H4C	109.5	H24A—C24—H24C	109.5
H4B—C4—H4C	109.5	H24B—C24—H24C	109.5
N1—C5—H5A	109.5	N2—C25—H25A	109.5
N1—C5—H5B	109.5	N2—C25—H25B	109.5
H5A—C5—H5B	109.5	H25A—C25—H25B	109.5
N1—C5—H5C	109.5	N2—C25—H25C	109.5
H5A—C5—H5C	109.5	H25A—C25—H25C	109.5
H5B—C5—H5C	109.5	H25B—C25—H25C	109.5
N1—C6—H6A	109.5	N2—C26—H26A	109.5
N1—C6—H6B	109.5	N2—C26—H26B	109.5
H6A—C6—H6B	109.5	H26A—C26—H26B	109.5
N1—C6—H6C	109.5	N2—C26—H26C	109.5
H6A—C6—H6C	109.5	H26A—C26—H26C	109.5
H6B—C6—H6C	109.5	H26B—C26—H26C	109.5

Hydrogen-bond geometry (Å, º) top

D—H···A	D—H	H···A	D···A	D—H···A
C2—H2···I1	1.10	3.03	3.946 (3)	141
C3—H3B···I1	0.97	2.94	3.904 (3)	172
C23—H23B···I1	0.97	2.96	3.921 (3)	170

Experimental details

Crystal data
Chemical formula	C₆H₂₂B₁₀N⁺·I⁻
M_r	343.25
Crystal system, space group	Monoclinic, P2₁/n
Temperature (K)	293
a, b, c (Å)	6.7435 (14), 25.013 (5), 18.694 (4)
β (°)	94.800 (4)
V (Å³)	3142.2 (11)
Z	8
Radiation type	Mo Kα
µ (mm⁻¹)	2.01
Crystal size (mm)	0.28 × 0.25 × 0.20

Data collection
Diffractometer	Bruker SMART 1000 CCD diffractometer
Absorption correction	Multi-scan (SADABS; Sheldrick, 2008)
T_min, T_max	0.603, 0.689
No. of measured, independent and observed [I > 2σ(I)] reflections	32138, 7772, 5834
R_int	0.032
(sin θ/λ)_max (Å⁻¹)	0.667

Refinement
R[F² > 2σ(F²)], wR(F²), S	0.031, 0.076, 1.02
No. of reflections	7772
No. of parameters	325
H-atom treatment	H-atom parameters constrained
Δρ_max, Δρ_min (e Å⁻³)	0.88, −0.92

Computer programs: SMART (Bruker, 1999), SAINT-Plus (Bruker, 1999), SHELXS97 (Sheldrick, 2008), SHELXL97 (Sheldrick, 2008), ORTEP-3 for Windows (Farrugia, 1997).

Hydrogen-bond geometry (Å, º) top

D—H···A	D—H	H···A	D···A	D—H···A
C2—H2···I1	1.10	3.03	3.946 (3)	141.1
C3—H3B···I1	0.97	2.94	3.904 (3)	171.9
C23—H23B···I1	0.97	2.96	3.921 (3)	169.7

Acknowledgements

This study was supported by the research fund of Chosun University, 2010.

References

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