26                                                                                             
 Trimethylaluminium structure                                                              
 Al         4.2675935634        5.5407111338        4.7089610588                                     
 Al         6.4608798572        4.2997143768        5.3967873091                                     
  C         5.1793535458        3.8631556857        3.7238051743                                     
  H         5.6698412406        4.2214449576        2.8092452108                                     
  H         4.1254815388        3.6491894229        3.4661776259                                     
  C         5.5489970130        5.9771338270        6.3820518382                                     
  H         5.1739704174        6.9992805163        6.1899010533                                     
  H         5.0579905439        5.6189992181        7.2963828304                                     
  H         5.5549255131        2.8411776275        3.9158135330                                     
  H         6.6028509125        6.1906122100        6.6401744970                                     
  C         8.1577533120        4.8462637633        4.5673348260                                     
  H         8.0626764249        5.7568375257        3.9554443238                                     
  H         8.5548879421        4.0566420550        3.9092516157                                     
  H         8.9349946502        5.0418279813        5.3241717501                                     
  C         6.3493279327        2.8490785738        6.7195500278                                     
  H         5.3140757011        2.6112574534        7.0097068947                                     
  H         6.8924547937        3.1044799443        7.6434085417                                     
  H         6.8018718123        1.9194670696        6.3386170476                                     
  C         4.3795530867        6.9915820838        3.3864761343                                     
  H         5.4149333409        7.2291739602        3.0966185981                                     
  H         3.9272669851        7.9212012690        3.7677052718                                     
  H         3.8365057581        6.7367174672        2.4624343308                                     
  C         2.5706506209        4.9941975061        5.5382826840                                     
  H         2.6657281632        4.0834902522        6.1499880352                                     
  H         1.7933806464        4.7988174956        4.7814409011                                     
  H         2.1735548094        5.7836967331        6.1965426058