metal-organic compounds
catena-Poly[1-butyl-3-methylimidazolium [[dichlorido(methanol-κO)(propan-2-ol-κO)lanthanate(III)]-di-μ-chlorido]]
aDepartment of Chemistry, University of South Dakota, 414E Clark, CL115, Vermillion, SD 57069, USA
*Correspondence e-mail: qingguo.meng@usd.edu, cuikun.lin@usd.edu
The title compound, (C8H15N2)[LaCl4(CH3OH)(C3H7OH)], consists of one 1-butyl-3-methylimidazolium (BMI+) cation and one hexahedral tetrachlorido(methanol)(propan-2-ol)lanthanate anion. The LaIII ion is eight-coordinate, with the LaIII ion bridged by a pair of Cl atoms, so forming chains propagating along the a-axis direction. Each LaIII ion is further coordinated by two isolated Cl atoms, one methanol and one propan-2-ol molecule. The coordinated methanol and propan-2-ol molecules of the anion form O—H⋯Cl hydrogen bonds with the Cl atoms of inversion-related anions. The BMI+ cation froms C—H⋯Cl hydrogen bonds with the Cl atoms of the anion. The anions are located in the C faces of the triclinic with an inversion center in the middle of the La2Cl2 ring of the polymeric chain.
Related literature
For related crystal structures, see: Binnemans (2007); Pellens et al. (2008); Matsumoto et al. (2002). For the synthesis of the title compound, see: Burrell et al. (2007). For the optical properties of lanthanides in ionic liquids, see: Brandner et al. (2011); Samikkanu et al. (2007).
Experimental
Crystal data
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Refinement
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Data collection: APEX2 (Bruker, 2007); cell SAINT (Bruker, 2007); data reduction: SAINT; program(s) used to solve structure: SIR92 (Altomare et al., 1994); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: Mercury (Macrae et al., 2008); software used to prepare material for publication: publCIF (Westrip, 2010).
Supporting information
10.1107/S160053681200517X/su2369sup1.cif
contains datablocks I, global. DOI:Structure factors: contains datablock I. DOI: 10.1107/S160053681200517X/su2369Isup2.hkl
1-butyl-3-methylimidazolium chloride (BMICl) was synthesized following a method reported by Burrell et al. (2007). Lanthanum chloride heptahydrate (0.708 g, 1.906 mmol) was mixed with BMICl (1.000 g, 5.725 mmol) in a small vial in a
Equal amount of methanol and propan-2-ol were added carefully until the total dissolution of the mixture. The vial was sealed and a colourless crystal appeared after cooling at 258 K for three weeks.The OH H atoms were located in a difference Fourier map and were freely refined. The C-bound H atoms were included in calculated positions and treated as riding atoms: C—H = 0.98, 0.97 and 0.96 Å for CH, CH2 and CH3 H-atoms, respectively, with Uiso(H) = k × Ueq(parent C-atom), where k = 1.5 for CH3 H atoms and k = 1.2 for all other H atoms.
Data collection: APEX2 (Bruker, 2007); cell
SAINT (Bruker, 2007); data reduction: SAINT (Bruker, 2007); program(s) used to solve structure: SIR92 (Altomare et al., 1994); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: Mercury (Macrae et al., 2008); software used to prepare material for publication: publCIF (Westrip, 2010).(C8H15N2)[LaCl4(CH4O)(C3H8O)] | Z = 2 |
Mr = 512.07 | F(000) = 508 |
Triclinic, P1 | Dx = 1.674 Mg m−3 |
Hall symbol: -P 1 | Mo Kα radiation, λ = 0.71073 Å |
a = 9.5035 (6) Å | Cell parameters from 8208 reflections |
b = 10.7413 (6) Å | θ = 2.3–26.4° |
c = 11.8625 (7) Å | µ = 2.63 mm−1 |
α = 114.009 (1)° | T = 100 K |
β = 109.735 (1)° | Block, colourless |
γ = 92.857 (1)° | 0.30 × 0.15 × 0.05 mm |
V = 1016.20 (10) Å3 |
Bruker APEXII CCD area-detector diffractometer | 4155 independent reflections |
Radiation source: fine-focus sealed tube | 3780 reflections with I > 2σ(I) |
Graphite monochromator | Rint = 0.029 |
ϕ and ω scans | θmax = 26.4°, θmin = 2.0° |
Absorption correction: multi-scan (SADABS; Sheldrick, 1996) | h = −11→11 |
Tmin = 0.506, Tmax = 0.880 | k = −13→13 |
11178 measured reflections | l = −14→14 |
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)] = 0.022 | Hydrogen site location: inferred from neighbouring sites |
wR(F2) = 0.049 | H atoms treated by a mixture of independent and constrained refinement |
S = 1.04 | w = 1/[σ2(Fo2) + (0.0193P)2 + 0.4077P] where P = (Fo2 + 2Fc2)/3 |
4155 reflections | (Δ/σ)max = 0.001 |
198 parameters | Δρmax = 0.71 e Å−3 |
0 restraints | Δρmin = −0.59 e Å−3 |
(C8H15N2)[LaCl4(CH4O)(C3H8O)] | γ = 92.857 (1)° |
Mr = 512.07 | V = 1016.20 (10) Å3 |
Triclinic, P1 | Z = 2 |
a = 9.5035 (6) Å | Mo Kα radiation |
b = 10.7413 (6) Å | µ = 2.63 mm−1 |
c = 11.8625 (7) Å | T = 100 K |
α = 114.009 (1)° | 0.30 × 0.15 × 0.05 mm |
β = 109.735 (1)° |
Bruker APEXII CCD area-detector diffractometer | 4155 independent reflections |
Absorption correction: multi-scan (SADABS; Sheldrick, 1996) | 3780 reflections with I > 2σ(I) |
Tmin = 0.506, Tmax = 0.880 | Rint = 0.029 |
11178 measured reflections |
R[F2 > 2σ(F2)] = 0.022 | 0 restraints |
wR(F2) = 0.049 | H atoms treated by a mixture of independent and constrained refinement |
S = 1.04 | Δρmax = 0.71 e Å−3 |
4155 reflections | Δρmin = −0.59 e Å−3 |
198 parameters |
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 | ||
La1 | 0.739307 (15) | 0.491237 (15) | −0.023339 (14) | 0.00964 (5) | |
Cl1 | 0.54404 (7) | 0.24123 (7) | −0.24214 (6) | 0.01713 (14) | |
Cl2 | 0.77665 (7) | 0.64602 (7) | −0.16020 (7) | 0.01686 (14) | |
Cl3 | 1.05144 (7) | 0.63430 (7) | 0.15869 (6) | 0.01356 (13) | |
Cl4 | 0.56003 (7) | 0.42798 (7) | 0.11059 (6) | 0.01393 (13) | |
O1 | 0.8605 (2) | 0.3297 (2) | 0.0650 (2) | 0.0176 (4) | |
H1D | 0.951 (4) | 0.344 (4) | 0.096 (4) | 0.042 (11)* | |
O2 | 0.7406 (2) | 0.7145 (2) | 0.16709 (19) | 0.0169 (4) | |
H2B | 0.668 (4) | 0.710 (4) | 0.180 (4) | 0.040 (12)* | |
N1 | 0.6581 (2) | 0.1728 (2) | 0.4667 (2) | 0.0145 (5) | |
N2 | 0.6359 (2) | 0.3591 (2) | 0.4388 (2) | 0.0148 (5) | |
C1 | 0.7807 (3) | 0.8505 (3) | 0.1784 (3) | 0.0253 (7) | |
H1A | 0.7734 | 0.9196 | 0.2577 | 0.038* | |
H1B | 0.7118 | 0.8565 | 0.1010 | 0.038* | |
H1C | 0.8837 | 0.8666 | 0.1841 | 0.038* | |
C2 | 0.7981 (3) | 0.1900 (3) | 0.0376 (3) | 0.0218 (6) | |
H2A | 0.6864 | 0.1766 | 0.0048 | 0.026* | |
C3 | 0.8374 (3) | 0.0814 (3) | −0.0713 (3) | 0.0297 (7) | |
H3A | 0.7993 | 0.0941 | −0.1509 | 0.045* | |
H3B | 0.7911 | −0.0104 | −0.0907 | 0.045* | |
H3C | 0.9465 | 0.0918 | −0.0409 | 0.045* | |
C4 | 0.8534 (4) | 0.1779 (4) | 0.1663 (3) | 0.0335 (8) | |
H4A | 0.8255 | 0.2488 | 0.2310 | 0.050* | |
H4B | 0.9628 | 0.1897 | 0.2001 | 0.050* | |
H4C | 0.8073 | 0.0875 | 0.1502 | 0.050* | |
C5 | 0.6982 (3) | 0.3114 (3) | 0.5278 (3) | 0.0152 (6) | |
H5A | 0.7599 | 0.3662 | 0.6180 | 0.018* | |
C6 | 0.5659 (3) | 0.1306 (3) | 0.3339 (3) | 0.0188 (6) | |
H6A | 0.5214 | 0.0389 | 0.2686 | 0.023* | |
C7 | 0.5522 (3) | 0.2461 (3) | 0.3163 (3) | 0.0195 (6) | |
H7A | 0.4967 | 0.2492 | 0.2365 | 0.023* | |
C8 | 0.7080 (3) | 0.0804 (3) | 0.5284 (3) | 0.0168 (6) | |
H8A | 0.7713 | 0.1356 | 0.6219 | 0.025* | |
H8B | 0.7654 | 0.0220 | 0.4847 | 0.025* | |
H8C | 0.6199 | 0.0232 | 0.5191 | 0.025* | |
C9 | 0.6552 (3) | 0.5071 (3) | 0.4667 (3) | 0.0167 (6) | |
H9A | 0.6495 | 0.5616 | 0.5526 | 0.020* | |
H9B | 0.5712 | 0.5167 | 0.3986 | 0.020* | |
C10 | 0.8046 (3) | 0.5662 (3) | 0.4693 (3) | 0.0175 (6) | |
H10A | 0.8113 | 0.5136 | 0.3833 | 0.021* | |
H10B | 0.8899 | 0.5585 | 0.5378 | 0.021* | |
C11 | 0.8133 (3) | 0.7191 (3) | 0.4988 (3) | 0.0199 (6) | |
H11A | 0.8119 | 0.7717 | 0.5869 | 0.024* | |
H11B | 0.7238 | 0.7264 | 0.4335 | 0.024* | |
C12 | 0.9580 (3) | 0.7831 (3) | 0.4944 (3) | 0.0250 (7) | |
H12A | 0.9588 | 0.8790 | 0.5135 | 0.038* | |
H12B | 0.9588 | 0.7325 | 0.4068 | 0.038* | |
H12C | 1.0469 | 0.7778 | 0.5601 | 0.038* |
U11 | U22 | U33 | U12 | U13 | U23 | |
La1 | 0.00730 (8) | 0.00983 (8) | 0.01066 (8) | 0.00150 (5) | 0.00309 (6) | 0.00398 (6) |
Cl1 | 0.0115 (3) | 0.0139 (3) | 0.0183 (3) | 0.0012 (2) | 0.0051 (3) | 0.0010 (3) |
Cl2 | 0.0131 (3) | 0.0205 (4) | 0.0221 (3) | 0.0054 (3) | 0.0073 (3) | 0.0138 (3) |
Cl3 | 0.0089 (3) | 0.0143 (3) | 0.0129 (3) | 0.0018 (2) | 0.0032 (2) | 0.0029 (3) |
Cl4 | 0.0113 (3) | 0.0179 (3) | 0.0158 (3) | 0.0046 (2) | 0.0060 (2) | 0.0099 (3) |
O1 | 0.0107 (10) | 0.0165 (10) | 0.0292 (11) | 0.0036 (8) | 0.0068 (9) | 0.0143 (9) |
O2 | 0.0120 (10) | 0.0131 (10) | 0.0206 (11) | −0.0001 (8) | 0.0072 (8) | 0.0027 (8) |
N1 | 0.0128 (11) | 0.0147 (12) | 0.0153 (11) | 0.0024 (9) | 0.0057 (9) | 0.0061 (10) |
N2 | 0.0118 (11) | 0.0168 (12) | 0.0173 (12) | 0.0046 (9) | 0.0077 (9) | 0.0073 (10) |
C1 | 0.0278 (16) | 0.0136 (15) | 0.0324 (18) | 0.0036 (12) | 0.0152 (14) | 0.0059 (13) |
C2 | 0.0188 (14) | 0.0170 (15) | 0.0346 (17) | 0.0055 (12) | 0.0112 (13) | 0.0156 (14) |
C3 | 0.0246 (16) | 0.0244 (17) | 0.0350 (19) | 0.0063 (13) | 0.0079 (14) | 0.0117 (15) |
C4 | 0.041 (2) | 0.0298 (19) | 0.038 (2) | 0.0069 (15) | 0.0174 (16) | 0.0215 (16) |
C5 | 0.0124 (13) | 0.0172 (14) | 0.0124 (13) | 0.0032 (11) | 0.0039 (10) | 0.0042 (11) |
C6 | 0.0169 (14) | 0.0161 (15) | 0.0153 (14) | 0.0017 (11) | 0.0034 (11) | 0.0023 (12) |
C7 | 0.0173 (14) | 0.0205 (15) | 0.0132 (14) | 0.0036 (11) | 0.0013 (11) | 0.0045 (12) |
C8 | 0.0179 (14) | 0.0158 (14) | 0.0165 (14) | 0.0034 (11) | 0.0080 (11) | 0.0061 (12) |
C9 | 0.0163 (14) | 0.0162 (14) | 0.0207 (15) | 0.0066 (11) | 0.0081 (11) | 0.0102 (12) |
C10 | 0.0136 (13) | 0.0188 (15) | 0.0173 (14) | 0.0029 (11) | 0.0052 (11) | 0.0065 (12) |
C11 | 0.0174 (14) | 0.0189 (15) | 0.0231 (15) | 0.0046 (11) | 0.0066 (12) | 0.0101 (13) |
C12 | 0.0231 (15) | 0.0249 (17) | 0.0271 (17) | 0.0023 (13) | 0.0089 (13) | 0.0128 (14) |
La1—O1 | 2.5102 (19) | C3—H3A | 0.9600 |
La1—O2 | 2.5348 (19) | C3—H3B | 0.9600 |
La1—Cl1 | 2.8232 (6) | C3—H3C | 0.9600 |
La1—Cl2 | 2.8378 (7) | C4—H4A | 0.9600 |
La1—Cl3 | 2.8884 (6) | C4—H4B | 0.9600 |
La1—Cl4 | 2.9119 (6) | C4—H4C | 0.9600 |
La1—Cl4i | 2.9841 (6) | C5—H5A | 0.9300 |
La1—Cl3ii | 3.0021 (6) | C6—C7 | 1.346 (4) |
Cl3—La1ii | 3.0021 (6) | C6—H6A | 0.9300 |
Cl4—La1i | 2.9841 (6) | C7—H7A | 0.9300 |
O1—C2 | 1.446 (3) | C8—H8A | 0.9600 |
O1—H1D | 0.79 (4) | C8—H8B | 0.9600 |
O2—C1 | 1.431 (3) | C8—H8C | 0.9600 |
O2—H2B | 0.75 (4) | C9—C10 | 1.512 (4) |
N1—C5 | 1.329 (3) | C9—H9A | 0.9700 |
N1—C6 | 1.378 (3) | C9—H9B | 0.9700 |
N1—C8 | 1.466 (3) | C10—C11 | 1.525 (4) |
N2—C5 | 1.332 (3) | C10—H10A | 0.9700 |
N2—C7 | 1.381 (3) | C10—H10B | 0.9700 |
N2—C9 | 1.474 (3) | C11—C12 | 1.533 (4) |
C1—H1A | 0.9600 | C11—H11A | 0.9700 |
C1—H1B | 0.9600 | C11—H11B | 0.9700 |
C1—H1C | 0.9600 | C12—H12A | 0.9600 |
C2—C4 | 1.500 (4) | C12—H12B | 0.9600 |
C2—C3 | 1.520 (4) | C12—H12C | 0.9600 |
C2—H2A | 0.9800 | ||
O1—La1—O2 | 110.49 (6) | C3—C2—H2A | 107.9 |
O1—La1—Cl1 | 83.72 (5) | C2—C3—H3A | 109.5 |
O2—La1—Cl1 | 142.48 (5) | C2—C3—H3B | 109.5 |
O1—La1—Cl2 | 141.74 (5) | H3A—C3—H3B | 109.5 |
O2—La1—Cl2 | 89.42 (5) | C2—C3—H3C | 109.5 |
Cl1—La1—Cl2 | 100.30 (2) | H3A—C3—H3C | 109.5 |
O1—La1—Cl3 | 72.67 (5) | H3B—C3—H3C | 109.5 |
O2—La1—Cl3 | 70.43 (5) | C2—C4—H4A | 109.5 |
Cl1—La1—Cl3 | 146.015 (18) | C2—C4—H4B | 109.5 |
Cl2—La1—Cl3 | 84.745 (19) | H4A—C4—H4B | 109.5 |
O1—La1—Cl4 | 72.72 (5) | C2—C4—H4C | 109.5 |
O2—La1—Cl4 | 70.12 (5) | H4A—C4—H4C | 109.5 |
Cl1—La1—Cl4 | 82.364 (19) | H4B—C4—H4C | 109.5 |
Cl2—La1—Cl4 | 145.479 (18) | N1—C5—N2 | 109.0 (2) |
Cl3—La1—Cl4 | 112.230 (18) | N1—C5—H5A | 125.5 |
O1—La1—Cl4i | 141.39 (5) | N2—C5—H5A | 125.5 |
O2—La1—Cl4i | 71.22 (5) | C7—C6—N1 | 107.5 (2) |
Cl1—La1—Cl4i | 76.418 (18) | C7—C6—H6A | 126.3 |
Cl2—La1—Cl4i | 75.142 (17) | N1—C6—H6A | 126.3 |
Cl3—La1—Cl4i | 136.524 (19) | C6—C7—N2 | 107.1 (2) |
Cl4—La1—Cl4i | 72.078 (19) | C6—C7—H7A | 126.5 |
O1—La1—Cl3ii | 70.16 (5) | N2—C7—H7A | 126.5 |
O2—La1—Cl3ii | 139.40 (5) | N1—C8—H8A | 109.5 |
Cl1—La1—Cl3ii | 77.752 (18) | N1—C8—H8B | 109.5 |
Cl2—La1—Cl3ii | 73.582 (18) | H8A—C8—H8B | 109.5 |
Cl3—La1—Cl3ii | 71.48 (2) | N1—C8—H8C | 109.5 |
Cl4—La1—Cl3ii | 139.352 (18) | H8A—C8—H8C | 109.5 |
Cl4i—La1—Cl3ii | 134.605 (17) | H8B—C8—H8C | 109.5 |
La1—Cl3—La1ii | 108.52 (2) | N2—C9—C10 | 113.7 (2) |
La1—Cl4—La1i | 107.922 (19) | N2—C9—H9A | 108.8 |
C2—O1—La1 | 130.59 (16) | C10—C9—H9A | 108.8 |
C2—O1—H1D | 109 (3) | N2—C9—H9B | 108.8 |
La1—O1—H1D | 118 (3) | C10—C9—H9B | 108.8 |
C1—O2—La1 | 123.48 (17) | H9A—C9—H9B | 107.7 |
C1—O2—H2B | 108 (3) | C9—C10—C11 | 109.5 (2) |
La1—O2—H2B | 112 (3) | C9—C10—H10A | 109.8 |
C5—N1—C6 | 108.2 (2) | C11—C10—H10A | 109.8 |
C5—N1—C8 | 125.9 (2) | C9—C10—H10B | 109.8 |
C6—N1—C8 | 125.8 (2) | C11—C10—H10B | 109.8 |
C5—N2—C7 | 108.2 (2) | H10A—C10—H10B | 108.2 |
C5—N2—C9 | 125.7 (2) | C10—C11—C12 | 112.2 (2) |
C7—N2—C9 | 126.1 (2) | C10—C11—H11A | 109.2 |
O2—C1—H1A | 109.5 | C12—C11—H11A | 109.2 |
O2—C1—H1B | 109.5 | C10—C11—H11B | 109.2 |
H1A—C1—H1B | 109.5 | C12—C11—H11B | 109.2 |
O2—C1—H1C | 109.5 | H11A—C11—H11B | 107.9 |
H1A—C1—H1C | 109.5 | C11—C12—H12A | 109.5 |
H1B—C1—H1C | 109.5 | C11—C12—H12B | 109.5 |
O1—C2—C4 | 108.9 (2) | H12A—C12—H12B | 109.5 |
O1—C2—C3 | 110.9 (2) | C11—C12—H12C | 109.5 |
C4—C2—C3 | 113.2 (3) | H12A—C12—H12C | 109.5 |
O1—C2—H2A | 107.9 | H12B—C12—H12C | 109.5 |
C4—C2—H2A | 107.9 | ||
O1—La1—Cl3—La1ii | 74.31 (5) | Cl1—La1—O2—C1 | −116.57 (19) |
O2—La1—Cl3—La1ii | −165.68 (5) | Cl2—La1—O2—C1 | −10.28 (19) |
Cl1—La1—Cl3—La1ii | 26.22 (4) | Cl3—La1—O2—C1 | 74.35 (19) |
Cl2—La1—Cl3—La1ii | −74.42 (2) | Cl4—La1—O2—C1 | −161.9 (2) |
Cl4—La1—Cl3—La1ii | 136.68 (2) | Cl4i—La1—O2—C1 | −84.77 (19) |
Cl4i—La1—Cl3—La1ii | −136.31 (2) | Cl3ii—La1—O2—C1 | 53.2 (2) |
Cl3ii—La1—Cl3—La1ii | 0.0 | La1—O1—C2—C4 | −139.1 (2) |
O1—La1—Cl4—La1i | −163.89 (5) | La1—O1—C2—C3 | 95.8 (2) |
O2—La1—Cl4—La1i | 75.95 (5) | C6—N1—C5—N2 | −0.4 (3) |
Cl1—La1—Cl4—La1i | −78.13 (2) | C8—N1—C5—N2 | 177.5 (2) |
Cl2—La1—Cl4—La1i | 18.96 (4) | C7—N2—C5—N1 | 0.3 (3) |
Cl3—La1—Cl4—La1i | 133.77 (2) | C9—N2—C5—N1 | −178.9 (2) |
Cl4i—La1—Cl4—La1i | 0.0 | C5—N1—C6—C7 | 0.4 (3) |
Cl3ii—La1—Cl4—La1i | −139.14 (2) | C8—N1—C6—C7 | −177.5 (2) |
O2—La1—O1—C2 | 119.5 (2) | N1—C6—C7—N2 | −0.2 (3) |
Cl1—La1—O1—C2 | −24.7 (2) | C5—N2—C7—C6 | 0.0 (3) |
Cl2—La1—O1—C2 | −123.36 (19) | C9—N2—C7—C6 | 179.1 (2) |
Cl3—La1—O1—C2 | −179.9 (2) | C5—N2—C9—C10 | 80.0 (3) |
Cl4—La1—O1—C2 | 59.3 (2) | C7—N2—C9—C10 | −99.1 (3) |
Cl4i—La1—O1—C2 | 34.2 (2) | N2—C9—C10—C11 | −180.0 (2) |
Cl3ii—La1—O1—C2 | −103.9 (2) | C9—C10—C11—C12 | −176.5 (2) |
O1—La1—O2—C1 | 136.28 (19) |
Symmetry codes: (i) −x+1, −y+1, −z; (ii) −x+2, −y+1, −z. |
D—H···A | D—H | H···A | D···A | D—H···A |
O1—H1D···Cl2ii | 0.79 (4) | 2.42 (4) | 3.206 (2) | 171 (4) |
O2—H2B···Cl1i | 0.75 (4) | 2.39 (4) | 3.122 (2) | 166 (4) |
C5—H5A···Cl3iii | 0.93 | 2.65 | 3.458 (3) | 145 |
C8—H8A···Cl3iii | 0.96 | 2.67 | 3.565 (3) | 156 |
Symmetry codes: (i) −x+1, −y+1, −z; (ii) −x+2, −y+1, −z; (iii) −x+2, −y+1, −z+1. |
Experimental details
Crystal data | |
Chemical formula | (C8H15N2)[LaCl4(CH4O)(C3H8O)] |
Mr | 512.07 |
Crystal system, space group | Triclinic, P1 |
Temperature (K) | 100 |
a, b, c (Å) | 9.5035 (6), 10.7413 (6), 11.8625 (7) |
α, β, γ (°) | 114.009 (1), 109.735 (1), 92.857 (1) |
V (Å3) | 1016.20 (10) |
Z | 2 |
Radiation type | Mo Kα |
µ (mm−1) | 2.63 |
Crystal size (mm) | 0.30 × 0.15 × 0.05 |
Data collection | |
Diffractometer | Bruker APEXII CCD area-detector diffractometer |
Absorption correction | Multi-scan (SADABS; Sheldrick, 1996) |
Tmin, Tmax | 0.506, 0.880 |
No. of measured, independent and observed [I > 2σ(I)] reflections | 11178, 4155, 3780 |
Rint | 0.029 |
(sin θ/λ)max (Å−1) | 0.625 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.022, 0.049, 1.04 |
No. of reflections | 4155 |
No. of parameters | 198 |
H-atom treatment | H atoms treated by a mixture of independent and constrained refinement |
Δρmax, Δρmin (e Å−3) | 0.71, −0.59 |
Computer programs: APEX2 (Bruker, 2007), SAINT (Bruker, 2007), SIR92 (Altomare et al., 1994), SHELXL97 (Sheldrick, 2008), Mercury (Macrae et al., 2008), publCIF (Westrip, 2010).
D—H···A | D—H | H···A | D···A | D—H···A |
O1—H1D···Cl2i | 0.79 (4) | 2.42 (4) | 3.206 (2) | 171 (4) |
O2—H2B···Cl1ii | 0.75 (4) | 2.39 (4) | 3.122 (2) | 166 (4) |
C5—H5A···Cl3iii | 0.93 | 2.65 | 3.458 (3) | 145.2 |
C8—H8A···Cl3iii | 0.96 | 2.67 | 3.565 (3) | 156.0 |
Symmetry codes: (i) −x+2, −y+1, −z; (ii) −x+1, −y+1, −z; (iii) −x+2, −y+1, −z+1. |
Acknowledgements
The authors thank the National Science Foundation/EPSCoR (grant No. 0554609) and the State of South Dakota, Governor's Office of Economic Development, for financial support.
References
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This is an open-access article distributed under the terms of the Creative Commons Attribution (CC-BY) Licence, which permits unrestricted use, distribution, and reproduction in any medium, provided the original authors and source are cited.
Ionic liquids (ILs) have received considerable attention due to their extraordinary properties as solvents (Binnemans, 2007). They have been proposed as excellent alternatives to conventional solvents for luminescent lanthanide complexes. Compared with aqueous or organic solvents, ILs have the advantages of potentially excluding quenching oscillators, providing greater luminescence quantum yields (Brandner et al., 2011; Samikkanu et al., 2007). Some analogous structures to the title compound, tris(1-ethyl-3-methylimidazolium)hexabromidoeuropate(III) (Pellens et al., 2008) and tris(1-ethyl-3-methylimidazolium)hexachloridolanthanate(III) (Matsumoto et al., 2002) have been reported.
The title compound, in contrast to these examples, includes coordinated alcohol molecules and crystallized after mixing lanthanum chloride in 1-butyl-3-methylimidazolium chloride (BMICl) with a mixture of methanol and propan-2-ol (Fig. 1). The bond lengths between La and the two non-bridging Cl atoms are 2.8232 (5) Å and 2.838 (1) Å, respectively. The La to bridging Cl distances are in the range of 2.8884 (6) Å and 3.0021 (8) Å. All the Cl atoms, except Cl4, exhibit short contacts to neighboring H atoms on the imidazolium rings or on alcohol molecules ranging from 2.653 Å to 2.909 Å.
In the crystal, H atoms in the imidazolium cations, such as H5A and H8A, form hydrogen bonds with chlorine Cl3 (Fig. 2 and Table 1). The two H atoms in methanol (H2B) and propan-2-ol (H1D) form hydrogen bonds with atoms Cl2 and Cl1, respectively (Table 1). The [LaCl4(CH3OH)(i-C3H9OH)]- anions are centered in the C faces of the triclinic unit cell, with an inversion center in the middle of La2Cl2 ring, as shown in Fig. 3. The BMI+ cation is on an inversion center, at position (1/2, 1/2, 1/2) in the unit cell.