Acta Cryst. (2012). E68, i84-i85 [ doi:10.1107/S1600536812043863 ]
The title compound, [Li(NH3)4]+[Li(NH3)3S3]-, an ammoniate of the previously unknown lithium trisulfide, was obtained from the reaction of lithium and sulfur in liquid ammonia. The asymmetric unit consists of two crystallographically independent formula units. The [Li(NH3)4]+ cations are close to regular LiN4 tetrahedra. The anions contain LiSN3 tetrahedra; the S-S-S bond angles are 110.43 (5) and 109.53 (5)°. In the crystal, the components are linked by multiple N-H
S hydrogen bonds. A weak N-H
N hydrogen bond is also present.
All preparations were carried out in an atmosphere of dried and purified argon using standard Schlenk techniques. Liquid ammonia was dried and stored over sodium. 100 mg (14.2 mmol) Li and 231 mg (7.2 mmol) S8 were placed in a baked out U-Schlenk tube inside a glove box. Approximately 25 ml ammonia were condensed into the tube at -78°C, yielding a blue solution of the alkali metal. After a storage at -38°C for three weeks the solution colour turned to yellow-orange and after four months orange crystals were formed. One was subjected to low temperature X-ray diffraction.
All hydrogen atoms were found by difference Fourier analysis and refined isotropically.
Data collection: X-AREA (Stoe & Cie, 2006); cell refinement: X-AREA (Stoe & Cie, 2006); data reduction: X-AREA (Stoe & Cie, 2006); program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: DIAMOND (Brandenburg, 2008); software used to prepare material for publication: publCIF (Westrip, 2010).
| [Li(NH3)4][Li(NH3)3S3] | F(000) = 992 |
| Mr = 229.30 | Dx = 1.176 Mg m−3 |
| Monoclinic, P21/c | Mo Kα radiation, λ = 0.71073 Å |
| Hall symbol: -P 2ybc | Cell parameters from 33516 reflections |
| a = 12.422 (3) Å | θ = 2.4–25.5° |
| b = 9.3721 (19) Å | µ = 0.54 mm−1 |
| c = 22.269 (5) Å | T = 123 K |
| β = 92.46 (3)° | Block, orange |
| V = 2590.2 (9) Å3 | 0.1 × 0.1 × 0.1 mm |
| Z = 8 |
| Stoe IPDS 1 diffractometer | 4788 independent reflections |
| Radiation source: fine-focus sealed tube | 2989 reflections with I > 2σ(I) |
| Graphite monochromator | Rint = 0.097 |
| rotation scans | θmax = 25.5°, θmin = 2.4° |
| Absorption correction: numerical (X-SHAPE and X-RED; Stoe & Cie 2006) | h = −15→15 |
| Tmin = 0.947, Tmax = 0.981 | k = −11→11 |
| 32304 measured reflections | l = −26→26 |
| 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)] = 0.040 | Hydrogen site location: difference Fourier map |
| wR(F2) = 0.079 | All H-atom parameters refined |
| S = 0.81 | w = 1/[σ2(Fo2) + (0.0278P)2] where P = (Fo2 + 2Fc2)/3 |
| 4788 reflections | (Δ/σ)max = 0.001 |
| 383 parameters | Δρmax = 0.53 e Å−3 |
| 0 restraints | Δρmin = −0.26 e Å−3 |
| [Li(NH3)4][Li(NH3)3S3] | V = 2590.2 (9) Å3 |
| Mr = 229.30 | Z = 8 |
| Monoclinic, P21/c | Mo Kα radiation |
| a = 12.422 (3) Å | µ = 0.54 mm−1 |
| b = 9.3721 (19) Å | T = 123 K |
| c = 22.269 (5) Å | 0.1 × 0.1 × 0.1 mm |
| β = 92.46 (3)° |
| Stoe IPDS 1 diffractometer | 4788 independent reflections |
| Absorption correction: numerical (X-SHAPE and X-RED; Stoe & Cie 2006) | 2989 reflections with I > 2σ(I) |
| Tmin = 0.947, Tmax = 0.981 | Rint = 0.097 |
| 32304 measured reflections | θmax = 25.5° |
| R[F2 > 2σ(F2)] = 0.040 | All H-atom parameters refined |
| wR(F2) = 0.079 | Δρmax = 0.53 e Å−3 |
| S = 0.81 | Δρmin = −0.26 e Å−3 |
| 4788 reflections | Absolute structure: ? |
| 383 parameters | Flack parameter: ? |
| 0 restraints | Rogers parameter: ? |
Experimental. Crystal mounting in perfluorether |
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 | ||
| Li1 | 0.7395 (4) | 0.7907 (6) | 0.7389 (3) | 0.0252 (13) | |
| Li2 | 0.3406 (4) | 0.8493 (7) | 0.6182 (3) | 0.0266 (13) | |
| Li3 | 0.7452 (4) | 0.7081 (6) | 0.4913 (3) | 0.0250 (13) | |
| Li4 | 0.1536 (4) | 0.7795 (6) | 0.3651 (3) | 0.0249 (13) | |
| S1 | 0.15394 (6) | 0.93809 (9) | 0.64317 (4) | 0.02269 (19) | |
| S2 | 0.05542 (7) | 0.79073 (9) | 0.59691 (4) | 0.0255 (2) | |
| S3 | 0.06305 (7) | 0.59281 (9) | 0.63965 (4) | 0.0269 (2) | |
| S4 | 0.33097 (7) | 0.82682 (10) | 0.41901 (4) | 0.0268 (2) | |
| S5 | 0.42615 (6) | 0.75535 (9) | 0.35064 (4) | 0.02202 (18) | |
| S6 | 0.46313 (7) | 0.54071 (10) | 0.36418 (4) | 0.0240 (2) | |
| N1 | 0.6879 (3) | 0.9930 (4) | 0.76601 (16) | 0.0265 (7) | |
| N2 | 0.6495 (3) | 0.6230 (4) | 0.76905 (16) | 0.0244 (7) | |
| N3 | 0.8984 (3) | 0.7513 (5) | 0.76394 (17) | 0.0288 (7) | |
| N4 | 0.7316 (3) | 0.7768 (5) | 0.64448 (15) | 0.0358 (8) | |
| N5 | 0.4113 (3) | 0.9960 (4) | 0.56295 (15) | 0.0246 (7) | |
| N6 | 0.4488 (3) | 0.8081 (4) | 0.68949 (17) | 0.0294 (7) | |
| N7 | 0.3186 (3) | 0.6668 (4) | 0.56994 (17) | 0.0266 (7) | |
| N8 | 0.8168 (3) | 0.9077 (4) | 0.51002 (17) | 0.0246 (7) | |
| N9 | 0.7427 (3) | 0.6940 (4) | 0.39786 (14) | 0.0257 (7) | |
| N10 | 0.5838 (2) | 0.6757 (4) | 0.50895 (16) | 0.0275 (7) | |
| N11 | 0.8388 (3) | 0.5406 (4) | 0.52589 (18) | 0.0326 (8) | |
| N12 | 0.0296 (2) | 0.7627 (4) | 0.42483 (15) | 0.0270 (7) | |
| N13 | 0.1046 (3) | 0.9471 (4) | 0.31136 (17) | 0.0266 (7) | |
| N14 | 0.1714 (3) | 0.5983 (4) | 0.31432 (18) | 0.0292 (7) | |
| H1A | 0.678 (3) | 1.056 (5) | 0.737 (2) | 0.038 (12)* | |
| H1B | 0.640 (3) | 0.989 (4) | 0.7876 (19) | 0.025 (11)* | |
| H1C | 0.733 (3) | 1.046 (5) | 0.7866 (19) | 0.032 (11)* | |
| H2A | 0.603 (3) | 0.637 (4) | 0.7916 (19) | 0.026 (8)* | |
| H2B | 0.695 (4) | 0.563 (5) | 0.786 (2) | 0.040 (12)* | |
| H2C | 0.625 (3) | 0.573 (5) | 0.740 (2) | 0.035 (12)* | |
| H3A | 0.925 (4) | 0.810 (6) | 0.780 (2) | 0.041 (15)* | |
| H3B | 0.942 (3) | 0.732 (5) | 0.7338 (19) | 0.033 (11)* | |
| H3C | 0.899 (4) | 0.674 (6) | 0.782 (2) | 0.046 (14)* | |
| H4A | 0.693 (4) | 0.699 (6) | 0.637 (2) | 0.055 (15)* | |
| H4B | 0.795 (4) | 0.769 (6) | 0.628 (2) | 0.058 (15)* | |
| H4C | 0.706 (4) | 0.845 (5) | 0.625 (2) | 0.039 (9)* | |
| H5A | 0.412 (3) | 0.967 (5) | 0.525 (2) | 0.034 (11)* | |
| H5B | 0.481 (4) | 1.025 (4) | 0.5667 (18) | 0.033 (11)* | |
| H5C | 0.380 (3) | 1.074 (5) | 0.5647 (19) | 0.033 (12)* | |
| H6A | 0.497 (4) | 0.863 (5) | 0.6871 (19) | 0.035 (13)* | |
| H6B | 0.476 (3) | 0.725 (5) | 0.6808 (17) | 0.021 (10)* | |
| H6C | 0.420 (4) | 0.809 (5) | 0.722 (2) | 0.045 (14)* | |
| H7A | 0.330 (3) | 0.680 (5) | 0.534 (2) | 0.034 (12)* | |
| H7B | 0.362 (4) | 0.593 (6) | 0.575 (2) | 0.055 (15)* | |
| H7C | 0.258 (4) | 0.640 (4) | 0.5784 (18) | 0.030 (11)* | |
| H8A | 0.784 (4) | 0.967 (5) | 0.527 (2) | 0.039 (9)* | |
| H8B | 0.830 (3) | 0.953 (4) | 0.477 (2) | 0.025 (10)* | |
| H8C | 0.871 (4) | 0.895 (5) | 0.529 (2) | 0.035 (12)* | |
| H9A | 0.770 (3) | 0.767 (5) | 0.3810 (19) | 0.035 (12)* | |
| H9B | 0.677 (4) | 0.683 (5) | 0.3837 (19) | 0.039 (12)* | |
| H9C | 0.785 (4) | 0.628 (5) | 0.389 (2) | 0.041 (13)* | |
| H10A | 0.571 (3) | 0.603 (4) | 0.5340 (18) | 0.022 (10)* | |
| H10B | 0.547 (4) | 0.647 (5) | 0.478 (2) | 0.048 (14)* | |
| H10C | 0.552 (3) | 0.744 (5) | 0.526 (2) | 0.041 (13)* | |
| H11A | 0.806 (3) | 0.481 (5) | 0.5431 (19) | 0.025 (12)* | |
| H11B | 0.889 (4) | 0.563 (5) | 0.550 (2) | 0.039 (12)* | |
| H11C | 0.870 (3) | 0.496 (5) | 0.497 (2) | 0.031 (12)* | |
| H12A | 0.047 (3) | 0.767 (5) | 0.464 (2) | 0.041 (12)* | |
| H12B | −0.018 (4) | 0.824 (6) | 0.421 (2) | 0.053 (15)* | |
| H12C | −0.002 (3) | 0.678 (5) | 0.4214 (18) | 0.029 (11)* | |
| H13A | 0.099 (3) | 0.931 (4) | 0.274 (2) | 0.026 (11)* | |
| H13B | 0.053 (4) | 0.978 (5) | 0.326 (2) | 0.036 (13)* | |
| H13C | 0.146 (3) | 1.020 (5) | 0.3085 (17) | 0.026 (8)* | |
| H14A | 0.173 (4) | 0.610 (5) | 0.279 (3) | 0.047 (15)* | |
| H14B | 0.136 (3) | 0.533 (5) | 0.3247 (19) | 0.030 (12)* | |
| H14C | 0.238 (4) | 0.574 (5) | 0.321 (2) | 0.050 (13)* |
| U11 | U22 | U33 | U12 | U13 | U23 | |
| Li1 | 0.025 (3) | 0.027 (3) | 0.024 (3) | 0.003 (2) | 0.001 (2) | 0.001 (3) |
| Li2 | 0.028 (3) | 0.026 (3) | 0.026 (3) | 0.001 (2) | −0.001 (2) | −0.003 (3) |
| Li3 | 0.022 (3) | 0.029 (4) | 0.024 (3) | −0.001 (2) | −0.001 (2) | 0.003 (3) |
| Li4 | 0.023 (3) | 0.026 (3) | 0.026 (3) | 0.001 (2) | 0.000 (2) | 0.003 (3) |
| S1 | 0.0216 (4) | 0.0202 (4) | 0.0260 (5) | −0.0005 (3) | −0.0009 (3) | −0.0036 (4) |
| S2 | 0.0259 (4) | 0.0251 (5) | 0.0245 (4) | −0.0007 (3) | −0.0098 (3) | −0.0003 (4) |
| S3 | 0.0277 (5) | 0.0234 (5) | 0.0297 (5) | −0.0051 (3) | 0.0010 (4) | 0.0013 (4) |
| S4 | 0.0214 (4) | 0.0338 (5) | 0.0250 (5) | 0.0051 (4) | −0.0018 (3) | −0.0094 (4) |
| S5 | 0.0242 (4) | 0.0222 (4) | 0.0198 (4) | 0.0007 (3) | 0.0031 (3) | 0.0017 (4) |
| S6 | 0.0265 (4) | 0.0215 (5) | 0.0238 (4) | 0.0027 (3) | −0.0008 (3) | −0.0024 (4) |
| N1 | 0.0265 (17) | 0.0296 (18) | 0.0234 (17) | 0.0007 (14) | 0.0031 (15) | 0.0043 (15) |
| N2 | 0.0226 (16) | 0.0283 (18) | 0.0221 (17) | 0.0011 (13) | −0.0011 (13) | 0.0007 (14) |
| N3 | 0.0259 (16) | 0.0283 (19) | 0.0321 (19) | 0.0006 (16) | −0.0011 (14) | 0.0035 (18) |
| N4 | 0.044 (2) | 0.041 (2) | 0.0219 (17) | −0.0086 (18) | −0.0003 (15) | 0.0037 (16) |
| N5 | 0.0241 (17) | 0.0241 (18) | 0.0254 (18) | −0.0003 (13) | −0.0021 (13) | 0.0003 (14) |
| N6 | 0.0314 (18) | 0.0277 (19) | 0.0285 (19) | 0.0048 (17) | −0.0032 (15) | −0.0018 (16) |
| N7 | 0.0223 (16) | 0.0275 (19) | 0.030 (2) | −0.0030 (14) | 0.0037 (14) | −0.0014 (15) |
| N8 | 0.0241 (17) | 0.0252 (17) | 0.0242 (18) | 0.0029 (13) | −0.0022 (14) | −0.0017 (15) |
| N9 | 0.0257 (17) | 0.0278 (18) | 0.0235 (16) | −0.0027 (15) | 0.0002 (13) | 0.0016 (14) |
| N10 | 0.0271 (16) | 0.0304 (19) | 0.0249 (18) | −0.0013 (15) | 0.0001 (14) | 0.0032 (16) |
| N11 | 0.0355 (18) | 0.0266 (19) | 0.034 (2) | −0.0016 (16) | −0.0142 (17) | 0.0017 (17) |
| N12 | 0.0250 (15) | 0.0290 (19) | 0.0271 (18) | 0.0021 (15) | 0.0022 (13) | 0.0000 (15) |
| N13 | 0.0225 (16) | 0.0289 (19) | 0.0287 (19) | −0.0054 (14) | 0.0040 (14) | 0.0032 (15) |
| N14 | 0.0244 (18) | 0.034 (2) | 0.029 (2) | −0.0008 (16) | 0.0024 (14) | −0.0054 (16) |
| Li1—N2 | 2.059 (7) | N4—H4C | 0.83 (5) |
| Li1—N3 | 2.061 (6) | N5—H5A | 0.88 (5) |
| Li1—N1 | 2.099 (7) | N5—H5B | 0.90 (4) |
| Li1—N4 | 2.104 (7) | N5—H5C | 0.83 (5) |
| Li2—N7 | 2.033 (7) | N6—H6A | 0.80 (5) |
| Li2—N5 | 2.066 (7) | N6—H6B | 0.87 (4) |
| Li2—N6 | 2.071 (7) | N6—H6C | 0.82 (5) |
| Li2—S1 | 2.547 (6) | N7—H7A | 0.82 (5) |
| Li3—N10 | 2.081 (6) | N7—H7B | 0.88 (6) |
| Li3—N11 | 2.082 (7) | N7—H7C | 0.83 (4) |
| Li3—N9 | 2.085 (7) | N8—H8A | 0.80 (5) |
| Li3—N8 | 2.105 (7) | N8—H8B | 0.86 (4) |
| Li4—N13 | 2.052 (7) | N8—H8C | 0.79 (5) |
| Li4—N14 | 2.058 (7) | N9—H9A | 0.86 (5) |
| Li4—N12 | 2.084 (7) | N9—H9B | 0.87 (5) |
| Li4—S4 | 2.503 (5) | N9—H9C | 0.84 (5) |
| S1—S2 | 2.0876 (13) | N10—H10A | 0.90 (4) |
| S2—S3 | 2.0852 (13) | N10—H10B | 0.85 (5) |
| S4—S5 | 2.0782 (13) | N10—H10C | 0.85 (5) |
| S5—S6 | 2.0825 (13) | N11—H11A | 0.80 (4) |
| N1—H1A | 0.87 (5) | N11—H11B | 0.83 (5) |
| N1—H1B | 0.79 (4) | N11—H11C | 0.87 (5) |
| N1—H1C | 0.86 (5) | N12—H12A | 0.89 (5) |
| N2—H2A | 0.79 (4) | N12—H12B | 0.83 (5) |
| N2—H2B | 0.87 (5) | N12—H12C | 0.89 (5) |
| N2—H2C | 0.85 (5) | N13—H13A | 0.84 (4) |
| N3—H3A | 0.73 (5) | N13—H13B | 0.78 (5) |
| N3—H3B | 0.90 (4) | N13—H13C | 0.86 (4) |
| N3—H3C | 0.83 (5) | N14—H14A | 0.80 (5) |
| N4—H4A | 0.88 (6) | N14—H14B | 0.79 (5) |
| N4—H4B | 0.89 (5) | N14—H14C | 0.87 (5) |
| N2—Li1—N3 | 107.6 (3) | H5A—N5—H5C | 110 (4) |
| N2—Li1—N1 | 114.8 (3) | H5B—N5—H5C | 100 (4) |
| N3—Li1—N1 | 112.6 (3) | Li2—N6—H6A | 107 (3) |
| N2—Li1—N4 | 106.0 (3) | Li2—N6—H6B | 104 (2) |
| N3—Li1—N4 | 105.3 (3) | H6A—N6—H6B | 105 (4) |
| N1—Li1—N4 | 110.0 (3) | Li2—N6—H6C | 112 (3) |
| N7—Li2—N5 | 107.2 (3) | H6A—N6—H6C | 115 (5) |
| N7—Li2—N6 | 108.5 (3) | H6B—N6—H6C | 113 (4) |
| N5—Li2—N6 | 107.6 (3) | Li2—N7—H7A | 111 (3) |
| N7—Li2—S1 | 106.7 (3) | Li2—N7—H7B | 122 (3) |
| N5—Li2—S1 | 109.1 (3) | H7A—N7—H7B | 96 (4) |
| N6—Li2—S1 | 117.4 (3) | Li2—N7—H7C | 104 (3) |
| N10—Li3—N11 | 110.3 (3) | H7A—N7—H7C | 118 (4) |
| N10—Li3—N9 | 101.9 (3) | H7B—N7—H7C | 107 (4) |
| N11—Li3—N9 | 107.8 (3) | Li3—N8—H8A | 120 (3) |
| N10—Li3—N8 | 119.7 (3) | Li3—N8—H8B | 111 (3) |
| N11—Li3—N8 | 111.9 (3) | H8A—N8—H8B | 100 (4) |
| N9—Li3—N8 | 104.0 (3) | Li3—N8—H8C | 108 (3) |
| N13—Li4—N14 | 110.3 (3) | H8A—N8—H8C | 107 (4) |
| N13—Li4—N12 | 102.8 (3) | H8B—N8—H8C | 109 (4) |
| N14—Li4—N12 | 112.8 (3) | Li3—N9—H9A | 113 (3) |
| N13—Li4—S4 | 112.2 (3) | Li3—N9—H9B | 110 (3) |
| N14—Li4—S4 | 107.3 (2) | H9A—N9—H9B | 109 (4) |
| N12—Li4—S4 | 111.5 (3) | Li3—N9—H9C | 108 (3) |
| S2—S1—Li2 | 101.31 (14) | H9A—N9—H9C | 103 (4) |
| S3—S2—S1 | 110.43 (5) | H9B—N9—H9C | 114 (4) |
| S5—S4—Li4 | 96.22 (14) | Li3—N10—H10A | 116 (2) |
| S4—S5—S6 | 109.53 (5) | Li3—N10—H10B | 112 (3) |
| Li1—N1—H1A | 116 (3) | H10A—N10—H10B | 99 (4) |
| Li1—N1—H1B | 113 (3) | Li3—N10—H10C | 116 (3) |
| H1A—N1—H1B | 113 (4) | H10A—N10—H10C | 101 (4) |
| Li1—N1—H1C | 118 (3) | H10B—N10—H10C | 111 (4) |
| H1A—N1—H1C | 94 (4) | Li3—N11—H11A | 115 (3) |
| H1B—N1—H1C | 101 (4) | Li3—N11—H11B | 116 (3) |
| Li1—N2—H2A | 120 (3) | H11A—N11—H11B | 105 (4) |
| Li1—N2—H2B | 106 (3) | Li3—N11—H11C | 110 (3) |
| H2A—N2—H2B | 108 (4) | H11A—N11—H11C | 106 (4) |
| Li1—N2—H2C | 111 (3) | H11B—N11—H11C | 105 (4) |
| H2A—N2—H2C | 109 (4) | Li4—N12—H12A | 118 (3) |
| H2B—N2—H2C | 101 (4) | Li4—N12—H12B | 116 (3) |
| Li1—N3—H3A | 114 (4) | H12A—N12—H12B | 101 (4) |
| Li1—N3—H3B | 116 (2) | Li4—N12—H12C | 111 (3) |
| H3A—N3—H3B | 104 (4) | H12A—N12—H12C | 102 (4) |
| Li1—N3—H3C | 106 (3) | H12B—N12—H12C | 107 (4) |
| H3A—N3—H3C | 114 (5) | Li4—N13—H13A | 117 (3) |
| H3B—N3—H3C | 102 (4) | Li4—N13—H13B | 106 (3) |
| Li1—N4—H4A | 103 (3) | H13A—N13—H13B | 115 (4) |
| Li1—N4—H4B | 115 (3) | Li4—N13—H13C | 119 (3) |
| H4A—N4—H4B | 110 (5) | H13A—N13—H13C | 95 (4) |
| Li1—N4—H4C | 118 (3) | H13B—N13—H13C | 104 (4) |
| H4A—N4—H4C | 110 (4) | Li4—N14—H14A | 116 (4) |
| H4B—N4—H4C | 100 (4) | Li4—N14—H14B | 114 (3) |
| Li2—N5—H5A | 113 (3) | H14A—N14—H14B | 116 (5) |
| Li2—N5—H5B | 125 (3) | Li4—N14—H14C | 104 (3) |
| H5A—N5—H5B | 98 (4) | H14A—N14—H14C | 99 (4) |
| Li2—N5—H5C | 110 (3) | H14B—N14—H14C | 106 (4) |
| D—H···A | D—H | H···A | D···A | D—H···A |
| N5—H5A···S4 | 0.89 (5) | 2.84 (5) | 3.677 (4) | 158 (4) |
| N5—H5B···S4i | 0.93 (5) | 2.70 (5) | 3.613 (3) | 167 (4) |
| N7—H7C···S2 | 0.89 (5) | 2.86 (4) | 3.542 (4) | 135 (3) |
| N7—H7C···S3 | 0.89 (5) | 2.80 (5) | 3.656 (4) | 162 (4) |
| N10—H10B···S6 | 0.89 (6) | 2.84 (6) | 3.718 (4) | 169 (4) |
| N10—H10A···S6ii | 0.93 (5) | 2.65 (5) | 3.545 (4) | 163 (3) |
| N14—H14C···S5 | 0.93 (5) | 2.90 (5) | 3.552 (4) | 128 (4) |
| N14—H14C···S6 | 0.93 (5) | 2.86 (5) | 3.781 (4) | 170 (4) |
| N1—H1C···S3iii | 0.88 (5) | 2.98 (5) | 3.782 (4) | 154 (4) |
| N1—H1A···S5i | 0.90 (5) | 2.87 (5) | 3.741 (4) | 165 (4) |
| N1—H1B···S6iv | 0.83 (5) | 2.80 (5) | 3.632 (4) | 179 (4) |
| N2—H2B···S1v | 0.82 (5) | 2.71 (5) | 3.521 (4) | 168 (4) |
| N2—H2A···S5iv | 0.83 (5) | 2.76 (5) | 3.566 (4) | 166 (4) |
| N2—H2C···S6ii | 0.91 (5) | 2.66 (5) | 3.569 (4) | 171 (4) |
| N3—H3C···S1v | 0.85 (6) | 2.84 (6) | 3.665 (4) | 163 (4) |
| N3—H3B···S3vi | 0.92 (5) | 2.92 (5) | 3.813 (4) | 164 (4) |
| N4—H4A···S6ii | 0.90 (6) | 2.95 (6) | 3.834 (4) | 168 (4) |
| N5—H5B···S5i | 0.93 (5) | 2.91 (5) | 3.587 (4) | 130 (3) |
| N6—H6C···S5iv | 0.81 (5) | 2.91 (6) | 3.663 (4) | 156 (4) |
| N6—H6B···S6ii | 0.90 (5) | 2.78 (5) | 3.664 (4) | 169 (3) |
| N7—H7A···S4 | 0.83 (5) | 2.89 (5) | 3.691 (4) | 161 (4) |
| N7—H7B···S6ii | 0.84 (6) | 2.85 (6) | 3.600 (4) | 150 (5) |
| N8—H8B···S1i | 0.92 (5) | 2.83 (5) | 3.734 (4) | 169 (3) |
| N8—H8C···S2vi | 0.77 (5) | 2.89 (5) | 3.641 (4) | 168 (5) |
| N8—H8A···S4i | 0.83 (5) | 2.68 (6) | 3.507 (4) | 177 (5) |
| N9—H9A···S1i | 0.87 (5) | 2.96 (5) | 3.803 (4) | 163 (4) |
| N9—H9C···S3ii | 0.88 (5) | 2.85 (5) | 3.729 (4) | 179 (4) |
| N9—H9B···S6 | 0.86 (5) | 2.99 (5) | 3.805 (4) | 157 (4) |
| N11—H11B···S3vi | 0.83 (5) | 2.90 (5) | 3.717 (4) | 170 (4) |
| N12—H12A···S2 | 0.86 (5) | 3.01 (5) | 3.842 (4) | 166 (4) |
| N12—H12C···S3vii | 0.91 (5) | 2.93 (5) | 3.787 (4) | 157 (3) |
| N13—H13B···S1viii | 0.86 (5) | 2.72 (5) | 3.571 (4) | 168 (4) |
| N13—H13A···S3ix | 0.85 (5) | 3.01 (5) | 3.855 (4) | 175 (4) |
| N13—H13C···N4i | 0.86 (5) | 2.62 (5) | 3.412 (6) | 154 (4) |
| N14—H14B···S3vii | 0.85 (5) | 2.83 (5) | 3.603 (4) | 153 (4) |
| Symmetry codes: (i) −x+1, −y+2, −z+1; (ii) −x+1, −y+1, −z+1; (iii) −x+1, y+1/2, −z+3/2; (iv) x, −y+3/2, z+1/2; (v) −x+1, y−1/2, −z+3/2; (vi) x+1, y, z; (vii) −x, −y+1, −z+1; (viii) −x, −y+2, −z+1; (ix) x, −y+3/2, z−1/2. |
| Li1—N2 | 2.059 (7) | Li3—N10 | 2.081 (6) |
| Li1—N3 | 2.061 (6) | Li3—N11 | 2.082 (7) |
| Li1—N1 | 2.099 (7) | Li3—N9 | 2.085 (7) |
| Li1—N4 | 2.104 (7) | Li3—N8 | 2.105 (7) |
| Li2—N7 | 2.033 (7) | Li4—N13 | 2.052 (7) |
| Li2—N5 | 2.066 (7) | Li4—N14 | 2.058 (7) |
| Li2—N6 | 2.071 (7) | Li4—N12 | 2.084 (7) |
| Li2—S1 | 2.547 (6) | Li4—S4 | 2.503 (5) |
| D—H···A | D—H | H···A | D···A | D—H···A |
| N5—H5A···S4 | 0.89 (5) | 2.84 (5) | 3.677 (4) | 158 (4) |
| N5—H5B···S4i | 0.93 (5) | 2.70 (5) | 3.613 (3) | 167 (4) |
| N7—H7C···S2 | 0.89 (5) | 2.86 (4) | 3.542 (4) | 135 (3) |
| N7—H7C···S3 | 0.89 (5) | 2.80 (5) | 3.656 (4) | 162 (4) |
| N10—H10B···S6 | 0.89 (6) | 2.84 (6) | 3.718 (4) | 169 (4) |
| N10—H10A···S6ii | 0.93 (5) | 2.65 (5) | 3.545 (4) | 163 (3) |
| N14—H14C···S5 | 0.93 (5) | 2.90 (5) | 3.552 (4) | 128 (4) |
| N14—H14C···S6 | 0.93 (5) | 2.86 (5) | 3.781 (4) | 170 (4) |
| N1—H1C···S3iii | 0.88 (5) | 2.98 (5) | 3.782 (4) | 154 (4) |
| N1—H1A···S5i | 0.90 (5) | 2.87 (5) | 3.741 (4) | 165 (4) |
| N1—H1B···S6iv | 0.83 (5) | 2.80 (5) | 3.632 (4) | 179 (4) |
| N2—H2B···S1v | 0.82 (5) | 2.71 (5) | 3.521 (4) | 168 (4) |
| N2—H2A···S5iv | 0.83 (5) | 2.76 (5) | 3.566 (4) | 166 (4) |
| N2—H2C···S6ii | 0.91 (5) | 2.66 (5) | 3.569 (4) | 171 (4) |
| N3—H3C···S1v | 0.85 (6) | 2.84 (6) | 3.665 (4) | 163 (4) |
| N3—H3B···S3vi | 0.92 (5) | 2.92 (5) | 3.813 (4) | 164 (4) |
| N4—H4A···S6ii | 0.90 (6) | 2.95 (6) | 3.834 (4) | 168 (4) |
| N5—H5B···S5i | 0.93 (5) | 2.91 (5) | 3.587 (4) | 130 (3) |
| N6—H6C···S5iv | 0.81 (5) | 2.91 (6) | 3.663 (4) | 156 (4) |
| N6—H6B···S6ii | 0.90 (5) | 2.78 (5) | 3.664 (4) | 169 (3) |
| N7—H7A···S4 | 0.83 (5) | 2.89 (5) | 3.691 (4) | 161 (4) |
| N7—H7B···S6ii | 0.84 (6) | 2.85 (6) | 3.600 (4) | 150 (5) |
| N8—H8B···S1i | 0.92 (5) | 2.83 (5) | 3.734 (4) | 169 (3) |
| N8—H8C···S2vi | 0.77 (5) | 2.89 (5) | 3.641 (4) | 168 (5) |
| N8—H8A···S4i | 0.83 (5) | 2.68 (6) | 3.507 (4) | 177 (5) |
| N9—H9A···S1i | 0.87 (5) | 2.96 (5) | 3.803 (4) | 163 (4) |
| N9—H9C···S3ii | 0.88 (5) | 2.85 (5) | 3.729 (4) | 179 (4) |
| N9—H9B···S6 | 0.86 (5) | 2.99 (5) | 3.805 (4) | 157 (4) |
| N11—H11B···S3vi | 0.83 (5) | 2.90 (5) | 3.717 (4) | 170 (4) |
| N12—H12A···S2 | 0.86 (5) | 3.01 (5) | 3.842 (4) | 166 (4) |
| N12—H12C···S3vii | 0.91 (5) | 2.93 (5) | 3.787 (4) | 157 (3) |
| N13—H13B···S1viii | 0.86 (5) | 2.72 (5) | 3.571 (4) | 168 (4) |
| N13—H13A···S3ix | 0.85 (5) | 3.01 (5) | 3.855 (4) | 175 (4) |
| N13—H13C···N4i | 0.86 (5) | 2.62 (5) | 3.412 (6) | 154 (4) |
| N14—H14B···S3vii | 0.85 (5) | 2.83 (5) | 3.603 (4) | 153 (4) |
| Symmetry codes: (i) −x+1, −y+2, −z+1; (ii) −x+1, −y+1, −z+1; (iii) −x+1, y+1/2, −z+3/2; (iv) x, −y+3/2, z+1/2; (v) −x+1, y−1/2, −z+3/2; (vi) x+1, y, z; (vii) −x, −y+1, −z+1; (viii) −x, −y+2, −z+1; (ix) x, −y+3/2, z−1/2. |
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In contrast to the trisulfides of the heavier alkali metals (Na–Cs) which were synthesized by Böttcher (1977, 1980a,b) under ammonothermalic conditions (130–400 °C, 500–3000 bar), [Li(NH3)4][Li(NH3)3S3] was formed in the reaction of lithium and sulfur in liquid ammonia. The crystal structure of [Li(NH3)4][Li(NH3)3S3] was determined in the course of investigations concerning the reactivity of sulfur containing components in solutions of alkali metals in liquid ammonia.
In the title compound, two crystallographically independent formula units represent the asymmetric unit (Fig. 1). The independent trisulfide anions S32– have an angled shape with angles of 110.43 (5)° and 109.53 (5)°. The average of the sulfur-sulfur distances is 2.083 Å and agrees with known S—S-distances of other trisulfides (Böttcher, 1977, 1980a,b). In contrast to the isolated Se32–-anion in [Li(NH3)4]Se3, the two crystallographically different S32–-anions build mono anionic [Li(NH3)3S3]--aggregates with triammine complexes. Therein, the lithium atoms are pseudo-tetrahedrally surrounded by three nitrogen and one sulfur atom. Mono cationic lithium tetrammine complexes compensate the remaining negative charges. In the [Li(NH3)4]+– and [Li(NH3)3S3]--units the Li—N-distances range from 2.033 (7) Å to 2.105 (7) Å, the two Li—S-distances from 2.503 (5) Å to 2.547 (6) Å. The title compound represents after Na2S3 × NH3 the second trisulfide compound that contains ammonia molecules of crystallization. Every ammonia molecule forms hydrogen bonds and acts as a donor molecule. The sulfur atoms and the nitrogen atom N(4) operate as hydrogen bond acceptors. The proton···sulfur distance corresponds to similar hydrogen bonds in compounds synthesized by Rossmeier (2002, 2005) or Meier (2008). Distances and angles are shown in Table 1. Figure 2 illustrates the unit cell of the title compound but hydrogen bonds are not depicted.