Sulfur
      Schmidt V M, Wilhelm E, Debaerdemaeker T, Hellner E, Kutoglu A
      Zeitschrift fur Anorganische und Allgemeine Chemie 405 (1974) 153-162
      Darstellung und kristallstruktur von cyclooktadekaschwefel, S18, und
      cycloikosaschwefel, S20
      Locality: synthetic
      Note: structure for S20
      _database_code_amcsd 0015781

      CELL PARAMETERS:   18.5800  13.1810   8.6000   90.000   90.000   90.000
      SPACE GROUP: Pbcn      
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:   2106.166
      Density (g/cm3):      2.022
      MAX. ABS. INTENSITY / VOLUME**2:      5.256484071    
      RIR:      0.846
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                 8.22          1.48       10.7505    1   1   0         4
                13.44          1.83        6.5905    0   2   0         2
                15.57          4.66        5.6922    2   1   1         8
                15.81          4.31        5.6054    3   1   0         4
                16.49          7.17        5.3753    2   2   0         4
                16.95          9.56        5.2311    0   2   1         4
                18.90         21.47        4.6960    3   1   1         8
                19.47         46.99        4.5581    2   2   1         8
                20.66         22.50        4.3000    0   0   2         2
                20.77          1.21        4.2757    1   3   0         4
                21.21        100.00        4.1893    1   0   2         4
                22.24         27.23        3.9963    3   2   1         8
                22.27         11.49        3.9925    1   1   2         8
                22.78         16.50        3.9036    4   1   1         8
                22.79         22.31        3.9023    2   0   2         4
                23.23          7.34        3.8287    1   3   1         8
                23.43          2.12        3.7967    4   2   0         4
                23.78         23.35        3.7417    2   1   2         8
                24.69         27.21        3.6059    2   3   1         8
                24.72         11.81        3.6013    0   2   2         4
                24.85         50.95        3.5835    3   3   0         4
                25.19          5.20        3.5355    1   2   2         8
                25.65         18.13        3.4733    4   2   1         8
                26.12         27.04        3.4118    3   1   2         8
                26.55          8.28        3.3578    2   2   2         8
                26.95          2.14        3.3078    3   3   1         8
                27.00         15.44        3.3024    5   1   1         8
                27.06         11.12        3.2952    0   4   0         2
                28.67          3.03        3.1132    3   2   2         8
                28.83         45.95        3.0967    6   0   0         2
                29.02         28.78        3.0771    0   4   1         4
                29.10         11.66        3.0688    4   1   2         8
                29.42         24.75        3.0357    1   4   1         8
                29.46          1.56        3.0319    1   3   2         8
                29.49          1.31        3.0294    5   2   1         8
                29.86          3.41        2.9925    4   3   1         8
                30.61          2.41        2.9210    2   4   1         8
                30.64          3.39        2.9176    2   3   2         8
                31.45          1.32        2.8449    6   1   1         8
                31.83         25.42        2.8116    5   0   2         4
                32.32          1.52        2.7699    1   1   3         8
                32.53          3.00        2.7529    3   3   2         8
                32.56         20.41        2.7497    5   1   2         8
                33.63          2.34        2.6648    6   2   1         8
                34.28         17.99        2.6155    0   4   2         4
                34.46          7.14        2.6028    1   2   3         8
                34.63          7.66        2.5900    1   4   2         8
                35.49          2.52        2.5294    2   2   3         8
                35.73          2.77        2.5129    6   0   2         4
                36.06          1.19        2.4905    7   1   1         8
                36.40          1.96        2.4684    6   1   2         8
                37.16          2.86        2.4198    3   2   3         8
                37.32          3.55        2.4095    3   4   2         8
                37.49          5.37        2.3988    4   1   3         8
                37.78          5.25        2.3810    1   3   3         8
                38.02          7.60        2.3670    7   2   1         8
                38.34          4.83        2.3480    6   2   2         8
                38.56          1.96        2.3345    3   5   1         8
                38.77          5.28        2.3225    8   0   0         2
                39.38          2.25        2.2878    4   2   3         8
                39.54          1.01        2.2791    4   4   2         8
                39.91          2.63        2.2586    7   0   2         4
                40.43          8.69        2.2312    1   5   2         8
                40.73          1.76        2.2153    4   5   1         8
                40.82          1.07        2.2104    8   1   1         8
                41.33          3.85        2.1844    2   5   2         8
                41.37          2.20        2.1827    6   4   1         8
                42.38          1.02        2.1328    4   3   3         8
                42.47          1.14        2.1285    0   6   1         4
                42.80          2.36        2.1127    3   5   2         8
                42.94          3.36        2.1065    2   4   3         8
                43.57          1.84        2.0774    6   1   3         8
                44.33          1.12        2.0435    8   0   2         4
                44.36         13.49        2.0419    3   4   3         8
                44.80          1.77        2.0231    4   5   2         8
                44.89          2.12        2.0194    8   1   2         8
                45.39          2.10        1.9982    6   4   2         8
                45.43          1.69        1.9962    2   2   4         8
                45.72          1.93        1.9845    9   1   1         8
                46.53          2.59        1.9518    8   2   2         8
                46.69          1.42        1.9456    1   6   2         8
                47.32          2.28        1.9208    1   3   4         8
                47.34          2.73        1.9203    9   2   1         8
                47.95          1.92        1.8974    6   3   3         8
                48.71          2.36        1.8692    5   4   3         8
                48.74          2.12        1.8685    9   3   0         4
                48.82          4.55        1.8655    3   6   2         8
                48.89          1.58        1.8630    7   4   2         8
                49.15          2.58        1.8537    8   4   1         8
                49.17          1.52        1.8529    8   3   2         8
                49.21          1.16        1.8517    3   5   3         8
                49.44          2.94        1.8436    3   3   4         8
                49.46          1.10        1.8427    5   1   4         8
                50.59          4.10        1.8044    2   7   1         8
                50.67          1.87        1.8016    3   7   0         4
                50.75          1.02        1.7991   10   1   1         8
                50.95          4.03        1.7922    1   4   4         8
                50.97          3.56        1.7918    6   6   0         4
                51.31          1.60        1.7805    7   3   3         8
                51.76          3.11        1.7661    6   0   4         4
                51.85          1.29        1.7633    3   7   1         8
                52.58          2.04        1.7405    8   2   3         8
                52.71          2.88        1.7367    8   4   2         8
                52.89          1.67        1.7311    5   6   2         8
                52.96          3.25        1.7290    3   4   4         8
                53.26          1.16        1.7201    5   5   3         8
                53.42          1.59        1.7152    7   5   2         8
                53.47          1.16        1.7138    2   6   3         8
                53.47          2.48        1.7137    9   3   2         8
                53.47          4.18        1.7136    5   3   4         8
                53.99          2.58        1.6984    1   1   5         8
                54.68          1.16        1.6784    3   6   3         8
                54.75          1.57        1.6767    7   4   3         8
                55.28          1.12        1.6619    9   1   3         8
                55.66          1.52        1.6512   10   2   2         8
                55.91          4.35        1.6445   11   1   1         8
                56.82          2.52        1.6204    5   4   4         8
                56.90          3.91        1.6182    0   8   1         4
                57.57          1.38        1.6010    4   1   5         8
                57.77          1.38        1.5960    8   6   0         4
                57.84          2.20        1.5942    2   8   1         8
                58.30          1.76        1.5828    8   4   3         8
                58.50          3.34        1.5777    8   0   4         4
                58.55          2.88        1.5766   11   3   0         4
                58.73          1.04        1.5721   11   0   2         4
                58.89          1.17        1.5682    1   7   3         8
                59.00          2.54        1.5656    3   8   1         8
                59.65          2.26        1.5501    5   1   5         8
                60.59          1.15        1.5281    4   8   1         8
                61.13          1.21        1.5160    2   6   4         8
                61.23          1.57        1.5138   12   1   1         8
                66.65          1.23        1.4031   11   5   1         8
                70.99          1.40        1.3277    8   8   1         8
================================================================================
       XPOW Copyright 1993 Bob Downs, Ranjini Swaminathan and Kurt Bartelmehs
  For reference, see Downs et al. (1993) American Mineralogist 78, 1104-1107.