Comparison of Structures of Crystalline Solids Predicted using PM6 with X-Ray (Home)

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171 MagnesiumDiiodide_(MgI2)

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                      Unit Cell Parameters:       a      b      c   alpha   beta  gamma   Volume  Density
                                     X-Ray:     6.88   4.14   4.14 120.00  90.00  90.00    102.1   4.523
                                       PM6:     6.28   4.27   4.24 118.24  90.56  89.63    100.1   4.614
                 X-Ray                               PM6
 
  X-Ray data set:
 MERS=(1,2,2) 1SCF GRADIENTS
 Magnesium Diiodide (MgI2)
 h=-87 hr=crc05
 Mg              0.00000000 +1    0.0000000 +1    0.0000000 +1                  0.0000
  I              2.07000000 +1   -1.1950000 +1    1.7200000 +1                  0.0000
  I             -2.07000000 +1    1.1950000 +1   -1.7200000 +1                  0.0000
 Mg             -2.07000000 +1    3.5850000 +1    0.0000000 +1                  0.0000
  I              0.00000000 +1    2.3900000 +1    1.7200000 +1                  0.0000
  I             -4.14000000 +1    4.7800000 +1   -1.7200000 +1                  0.0000
 Mg              4.14000000 +1    0.0000000 +1    0.0000000 +1                  0.0000
  I              6.21000000 +1   -1.1950000 +1    1.7200000 +1                  0.0000
  I              2.07000000 +1    1.1950000 +1   -1.7200000 +1                  0.0000
 Mg              2.07000000 +1    3.5850000 +1    0.0000000 +1                  0.0000
  I              4.14000000 +1    2.3900000 +1    1.7200000 +1                  0.0000
  I              0.00000000 +1    4.7800000 +1   -1.7200000 +1                  0.0000
 Tv              0.00000000 +1    0.0000000 +1   -6.8800000 +1 
 Tv             -4.14000000 +1    7.1700000 +1    0.0000000 +1 
 Tv              8.28000000 +1    0.0000000 +1    0.0000000 +1 
 
  Optimized PM6 data set:
 MERS=(1,2,2) GNORM=5
 Magnesium Diiodide (MgI2)
 h=-87 hr=crc05
 Mg        -0.01136463 +1   -0.0317618 +1    0.0083073 +1                      0.0000
  I         2.05926342 +1   -1.2366027 +1    1.6328955 +1                      0.0000
  I        -2.08229525 +1    1.1588394 +1   -1.6355848 +1                      0.0000
 Mg        -2.07816156 +1    3.5970880 +1   -0.0390452 +1                      0.0000
  I        -0.01212448 +1    2.4048294 +1    1.6369670 +1                      0.0000
  I        -4.15870838 +1    4.7955015 +1   -1.6140474 +1                      0.0000
 Mg         4.14775123 +1   -0.0120777 +1    0.0386889 +1                      0.0000
  I         6.22776039 +1   -1.2104197 +1    1.6143602 +1                      0.0000
  I         2.08203862 +1    1.1804481 +1   -1.6371679 +1                      0.0000
 Mg         2.08222940 +1    3.6172592 +1   -0.0085077 +1                      0.0000
  I         4.15293132 +1    2.4251857 +1    1.6357728 +1                      0.0000
  I         0.01067989 +1    4.8217106 +1   -1.6326386 +1                      0.0000
 Tv         0.01525905 +1   -0.0186936 +1   -6.2798229 +1 
 Tv        -4.15300228 +1    7.4625379 +1   -0.0871882 +1 
 Tv         8.47171190 +1    0.1279599 +1    0.1029763 +1