1,3-Bis(2,6-diisopropyl-phen-yl)-4,5-dihydro-1H-imidazol-3-ium triiodide.

In the crystal structure of the title compound, C(27)H(39)N(2) (+)·I(3) (-), the imidazolidinium ring is perpendicular to a mirror plane which bis-ects the cation. The dihedral angle between the imidazolidinium ring and the benzene ring is 89.0 (2)°. The triiodide anion also lies on a mirror plane and is almost linear with an I-I-I bond angle of 178.309 (18)°.

Related literature

For a related structure with a 1,3-(2,6-diisopropyl­phen­yl)imidazolidinium unit, see: Giffin et al. (2010 ▶). For its synthesis, see: Llewellyn et al. (2006 ▶).

Experimental

Crystal data

C27H39N2 +·I3 −

M = 772.30

Monoclinic,

a = 18.0288 (5) Å

b = 15.4554 (5) Å

c = 13.8457 (6) Å

β = 129.456 (1)°

V = 2978.81 (18) Å3

Z = 4

Mo Kα radiation

μ = 3.16 mm−1

T = 173 K

0.39 × 0.22 × 0.14 mm

Data collection

Bruker APEXII CCD diffractometer

Absorption correction: integration (XPREP; Bruker, 2005 ▶) T min = 0.438, T max = 0.642

12244 measured reflections

3772 independent reflections

2536 reflections with I > 2σ(I)

R int = 0.048

Refinement

R[F 2 > 2σ(F 2)] = 0.039

wR(F 2) = 0.122

S = 0.97

3772 reflections

155 parameters

H-atom parameters constrained

Δρmax = 1.92 e Å−3

Δρmin = −1.30 e Å−3

Data collection: APEX2 (Bruker, 2005 ▶); cell refinement: SAINT (Bruker, 2005 ▶); data reduction: SAINT; program(s) used to solve structure: SHELXS97 (Sheldrick, 2008 ▶); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008 ▶); molecular graphics: SHELXTL (Sheldrick, 2008 ▶); software used to prepare material for publication: SHELXTL.

Crystal structure: contains datablocks global, I. DOI: 10.1107/S1600536810045228/is2624sup1.cif

Structure factors: contains datablocks I. DOI: 10.1107/S1600536810045228/is2624Isup2.hkl

Additional supplementary materials: crystallographic information; 3D view; checkCIF report

C27H39N2+·I3−	F(000) = 1496
Mr = 772.30	Dx = 1.722 Mg m−3
Monoclinic, C2/m	Mo Kα radiation, λ = 0.71073 Å
Hall symbol: -C 2y	Cell parameters from 3850 reflections
a = 18.0288 (5) Å	θ = 2.9–28.1°
b = 15.4554 (5) Å	µ = 3.16 mm−1
c = 13.8457 (6) Å	T = 173 K
β = 129.456 (1)°	Block, brown
V = 2978.81 (18) Å3	0.39 × 0.22 × 0.14 mm
Z = 4

Bruker APEXII CCD diffractometer	3772 independent reflections
Radiation source: fine-focus sealed tube	2536 reflections with I > 2σ(I)
graphite	Rint = 0.048
φ and ω scans	θmax = 28.3°, θmin = 1.9°
Absorption correction: integration (XPREP; Bruker, 2005)	h = −17→24
Tmin = 0.438, Tmax = 0.642	k = −20→18
12244 measured reflections	l = −18→11

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)] = 0.039	Hydrogen site location: inferred from neighbouring sites
wR(F2) = 0.122	H-atom parameters constrained
S = 0.97	w = 1/[σ2(Fo2) + (0.065P)2 + 5.5612P] where P = (Fo2 + 2Fc2)/3
3772 reflections	(Δ/σ)max = 0.026
155 parameters	Δρmax = 1.92 e Å−3
0 restraints	Δρmin = −1.30 e Å−3

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.

	x	y	z	Uiso*/Ueq
C1	0.3529 (2)	0.3426 (2)	0.2270 (3)	0.0250 (7)
C2	0.3463 (2)	0.3008 (2)	0.3116 (3)	0.0277 (7)
C3	0.3832 (3)	0.2177 (2)	0.3478 (3)	0.0328 (8)
H3	0.3808	0.1876	0.4055	0.039*
C4	0.4236 (3)	0.1775 (2)	0.3015 (4)	0.0388 (9)
H4	0.4480	0.1203	0.3274	0.047*
C5	0.4285 (3)	0.2201 (2)	0.2178 (3)	0.0354 (8)
H5	0.4569	0.1919	0.1873	0.043*
C6	0.3926 (2)	0.3033 (2)	0.1777 (3)	0.0296 (7)
C7	0.4002 (3)	0.3505 (2)	0.0879 (3)	0.0332 (8)
H7	0.3583	0.4031	0.0567	0.040*
C8	0.3653 (4)	0.2949 (3)	−0.0245 (4)	0.0578 (13)
H8A	0.3638	0.3297	−0.0849	0.087*
H8B	0.3006	0.2734	−0.0640	0.087*
H8C	0.4090	0.2459	0.0029	0.087*
C9	0.5022 (3)	0.3801 (4)	0.1556 (4)	0.0573 (13)
H9A	0.5240	0.4145	0.2289	0.086*
H9B	0.5050	0.4156	0.0992	0.086*
H9C	0.5440	0.3296	0.1825	0.086*
C10	0.3020 (3)	0.3437 (2)	0.3629 (3)	0.0310 (8)
H10	0.2700	0.3981	0.3141	0.037*
C11	0.3788 (4)	0.3692 (5)	0.4980 (4)	0.080 (2)
H11A	0.4077	0.3170	0.5497	0.120*
H11B	0.3500	0.4040	0.5259	0.120*
H11C	0.4284	0.4031	0.5062	0.120*
C12	0.2256 (5)	0.2874 (4)	0.3461 (6)	0.0741 (17)
H12A	0.1784	0.2701	0.2582	0.111*
H12B	0.1932	0.3200	0.3706	0.111*
H12C	0.2557	0.2356	0.3986	0.111*
C13	0.3643 (3)	0.5000	0.2404 (4)	0.0239 (9)
H13	0.4304	0.5000	0.3122	0.029*
C14	0.2147 (2)	0.4503 (2)	0.0778 (3)	0.0298 (7)
H14A	0.1690	0.4272	0.0882	0.036*
H14B	0.1980	0.4272	−0.0005	0.036*
N1	0.31536 (19)	0.42912 (17)	0.1873 (2)	0.0250 (6)
I1	0.24578 (3)	0.0000	0.27734 (5)	0.06328 (17)
I2	0.34949 (3)	0.0000	0.54335 (4)	0.05203 (15)
I3	0.45122 (3)	0.0000	0.81697 (5)	0.06143 (17)

	U11	U22	U33	U12	U13	U23
C1	0.0219 (16)	0.0203 (15)	0.0278 (14)	−0.0005 (12)	0.0134 (12)	−0.0018 (12)
C2	0.0229 (16)	0.0261 (17)	0.0252 (14)	−0.0019 (13)	0.0111 (13)	−0.0014 (12)
C3	0.0311 (19)	0.0298 (19)	0.0313 (16)	−0.0006 (15)	0.0170 (14)	0.0027 (14)
C4	0.035 (2)	0.0253 (19)	0.045 (2)	0.0043 (16)	0.0201 (17)	0.0037 (15)
C5	0.034 (2)	0.0302 (19)	0.0416 (18)	0.0031 (16)	0.0240 (16)	−0.0041 (15)
C6	0.0221 (17)	0.0294 (18)	0.0328 (15)	−0.0029 (14)	0.0153 (14)	−0.0042 (14)
C7	0.0312 (19)	0.0338 (19)	0.0393 (17)	0.0014 (15)	0.0246 (16)	−0.0014 (15)
C8	0.068 (3)	0.060 (3)	0.038 (2)	−0.019 (3)	0.030 (2)	−0.011 (2)
C9	0.048 (3)	0.081 (4)	0.051 (2)	−0.027 (3)	0.035 (2)	−0.012 (2)
C10	0.0318 (18)	0.0329 (19)	0.0272 (15)	0.0007 (15)	0.0182 (14)	−0.0011 (14)
C11	0.050 (3)	0.115 (5)	0.043 (2)	0.019 (3)	0.015 (2)	−0.035 (3)
C12	0.103 (5)	0.059 (3)	0.118 (5)	−0.025 (3)	0.097 (4)	−0.029 (3)
C13	0.021 (2)	0.026 (2)	0.0233 (19)	0.000	0.0131 (17)	0.000
C14	0.0198 (16)	0.0267 (18)	0.0303 (15)	0.0005 (13)	0.0101 (13)	−0.0013 (13)
N1	0.0201 (13)	0.0214 (14)	0.0267 (12)	0.0006 (11)	0.0118 (11)	0.0002 (10)
I1	0.0473 (3)	0.0391 (3)	0.0848 (3)	0.000	0.0333 (2)	0.000
I2	0.0325 (2)	0.0354 (2)	0.0847 (3)	0.000	0.0356 (2)	0.000
I3	0.0361 (2)	0.0614 (3)	0.0792 (3)	0.000	0.0331 (2)	0.000

C1—C6	1.403 (5)	C9—H9C	0.9800
C1—C2	1.407 (5)	C10—C11	1.509 (5)
C1—N1	1.441 (4)	C10—C12	1.518 (6)
C2—C3	1.386 (5)	C10—H10	1.0000
C2—C10	1.518 (5)	C11—H11A	0.9800
C3—C4	1.384 (5)	C11—H11B	0.9800
C3—H3	0.9500	C11—H11C	0.9800
C4—C5	1.385 (5)	C12—H12A	0.9800
C4—H4	0.9500	C12—H12B	0.9800
C5—C6	1.388 (5)	C12—H12C	0.9800
C5—H5	0.9500	C13—N1	1.302 (3)
C6—C7	1.520 (5)	C13—N1i	1.302 (3)
C7—C9	1.511 (5)	C13—H13	0.9500
C7—C8	1.521 (5)	C14—N1	1.484 (4)
C7—H7	1.0000	C14—C14i	1.535 (7)
C8—H8A	0.9800	C14—H14A	0.9900
C8—H8B	0.9800	C14—H14B	0.9900
C8—H8C	0.9800	I1—I2	2.8824 (7)
C9—H9A	0.9800	I2—I3	2.9808 (7)
C9—H9B	0.9800
C6—C1—C2	123.1 (3)	H9A—C9—H9C	109.5
C6—C1—N1	118.5 (3)	H9B—C9—H9C	109.5
C2—C1—N1	118.4 (3)	C11—C10—C12	111.6 (4)
C3—C2—C1	116.8 (3)	C11—C10—C2	110.7 (3)
C3—C2—C10	120.7 (3)	C12—C10—C2	112.0 (3)
C1—C2—C10	122.5 (3)	C11—C10—H10	107.5
C4—C3—C2	121.5 (3)	C12—C10—H10	107.5
C4—C3—H3	119.3	C2—C10—H10	107.5
C2—C3—H3	119.3	C10—C11—H11A	109.5
C5—C4—C3	120.4 (3)	C10—C11—H11B	109.5
C5—C4—H4	119.8	H11A—C11—H11B	109.5
C3—C4—H4	119.8	C10—C11—H11C	109.5
C4—C5—C6	120.9 (4)	H11A—C11—H11C	109.5
C4—C5—H5	119.5	H11B—C11—H11C	109.5
C6—C5—H5	119.5	C10—C12—H12A	109.5
C5—C6—C1	117.3 (3)	C10—C12—H12B	109.5
C5—C6—C7	120.7 (3)	H12A—C12—H12B	109.5
C1—C6—C7	121.9 (3)	C10—C12—H12C	109.5
C9—C7—C8	110.7 (3)	H12A—C12—H12C	109.5
C9—C7—C6	110.2 (3)	H12B—C12—H12C	109.5
C8—C7—C6	111.8 (3)	N1—C13—N1i	114.6 (4)
C9—C7—H7	108.0	N1—C13—H13	122.7
C8—C7—H7	108.0	N1i—C13—H13	122.7
C6—C7—H7	108.0	N1—C14—C14i	102.77 (16)
C7—C8—H8A	109.5	N1—C14—H14A	111.2
C7—C8—H8B	109.5	C14i—C14—H14A	111.2
H8A—C8—H8B	109.5	N1—C14—H14B	111.2
C7—C8—H8C	109.5	C14i—C14—H14B	111.2
H8A—C8—H8C	109.5	H14A—C14—H14B	109.1
H8B—C8—H8C	109.5	C13—N1—C1	125.5 (3)
C7—C9—H9A	109.5	C13—N1—C14	109.9 (3)
C7—C9—H9B	109.5	C1—N1—C14	124.6 (3)
H9A—C9—H9B	109.5	I1—I2—I3	178.309 (18)
C7—C9—H9C	109.5
C6—C1—C2—C3	1.3 (5)	C1—C6—C7—C9	103.2 (4)
N1—C1—C2—C3	−180.0 (3)	C5—C6—C7—C8	49.3 (5)
C6—C1—C2—C10	−179.2 (3)	C1—C6—C7—C8	−133.2 (4)
N1—C1—C2—C10	−0.5 (4)	C3—C2—C10—C11	72.8 (5)
C1—C2—C3—C4	−0.7 (5)	C1—C2—C10—C11	−106.7 (4)
C10—C2—C3—C4	179.8 (3)	C3—C2—C10—C12	−52.4 (5)
C2—C3—C4—C5	0.4 (6)	C1—C2—C10—C12	128.1 (4)
C3—C4—C5—C6	−0.5 (6)	N1i—C13—N1—C1	179.3 (2)
C4—C5—C6—C1	1.0 (5)	N1i—C13—N1—C14	0.1 (5)
C4—C5—C6—C7	178.7 (3)	C6—C1—N1—C13	−89.2 (4)
C2—C1—C6—C5	−1.4 (5)	C2—C1—N1—C13	92.0 (4)
N1—C1—C6—C5	179.8 (3)	C6—C1—N1—C14	89.9 (4)
C2—C1—C6—C7	−179.1 (3)	C2—C1—N1—C14	−88.9 (4)
N1—C1—C6—C7	2.2 (5)	C14i—C14—N1—C13	−0.1 (3)
C5—C6—C7—C9	−74.3 (4)	C14i—C14—N1—C1	−179.3 (3)