Synthesis and Stability of Homoleptic Metal(III) Tetramethylaluminates
Giovanni Occhipinti; Christian Meermann; H. Martin Dietrich; Rannveig Litlabø; Florian Auras; Karl Wilhelm Törnroos; Cäcilia Maichle-Mössmer; Vidar R. Jensen; Reiner Anwander; Journal of the American Chemical Society 133 (2011) 6323–6337; doi:10.1021/ja2001049

data_4106029
_publ_contact_author_address
;
Department of Chemistry,
University of Bergen,
All\'egaten 41,
N-5007 Bergen,
Norway
;
_publ_contact_author_name
;
Prof. Karl Wilhelm T\"ornroos
;
_publ_section_title
;
 Synthesis and Stability of Homoleptic Metal(III) Tetramethylaluminates
;
_journal_name_full               'Journal of the American Chemical Society'
_journal_page_first              6323
_journal_page_last               6337
_journal_paper_doi               10.1021/ja2001049
_journal_volume                  133
_journal_year                    2011
_chemical_formula_moiety         'C24 H60 Al3 O3 Sc'
_chemical_formula_sum            'C24 H60 Al3 O3 Sc'
_chemical_formula_weight         522.62
_chemical_name_systematic
; 
 ? 
;
_space_group_IT_number           159
_symmetry_cell_setting           hexagonal
_symmetry_space_group_name_Hall  'P 3 -2c'
_symmetry_space_group_name_H-M   'P 3 1 c'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                90.00
_cell_angle_beta                 90.00
_cell_angle_gamma                120.00
_cell_formula_units_Z            2
_cell_length_a                   15.8846(3)
_cell_length_b                   15.8846(3)
_cell_length_c                   8.6025(4)
_cell_measurement_reflns_used    9823
_cell_measurement_temperature    123(2)
_cell_measurement_theta_max      27.23
_cell_measurement_theta_min      2.34
_cell_volume                     1879.78(10)
_computing_cell_refinement
;
Bruker (2004). SAINT, version 6.45a, Bruker AXS Inc., Madison, 
Wisconsin, USA.
;
_computing_data_collection
;
Bruker (1999). SMART, version 5.054, Bruker AXS Inc., Madison, 
Wisconsin, USA.
;
_computing_data_reduction
;
Bruker (2004). SAINT, version 6.45a, Bruker AXS Inc., Madison, 
Wisconsin, USA.
;
_computing_molecular_graphics
;
Brandenburg, K. (2005). DIAMOND. Version 3.1. Crystal Impact GbR, Bonn, 
Germany.; Farrugia, L. J. (1997). ORTEP-3. J. Appl. Cryst. 30, 565.
;
_computing_publication_material
;
Bruker AXS (2003). SHELXTL. Version 6.14. Bruker AXS Inc., Madison, 
Wisconsin, USA.
;
_computing_structure_refinement
;
Sheldrick, G. M. (2008). Acta Cryst. A64, 112--122.
;
_computing_structure_solution
;     
Sheldrick, G. M. (2008). Acta Cryst. A64, 112--122.
;
_diffrn_ambient_temperature      123(2)
_diffrn_detector_area_resol_mean '48 \um'
_diffrn_measured_fraction_theta_full 1.000
_diffrn_measured_fraction_theta_max 1.000
_diffrn_measurement_device_type  'Bruker-AXS SMART 2K CCD'
_diffrn_measurement_method       'omega scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'normal-focus sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0341
_diffrn_reflns_av_sigmaI/netI    0.0186
_diffrn_reflns_limit_h_max       20
_diffrn_reflns_limit_h_min       -20
_diffrn_reflns_limit_k_max       20
_diffrn_reflns_limit_k_min       -20
_diffrn_reflns_limit_l_max       11
_diffrn_reflns_limit_l_min       -11
_diffrn_reflns_number            26773
_diffrn_reflns_theta_full        27.93
_diffrn_reflns_theta_max         27.93
_diffrn_reflns_theta_min         1.48
_exptl_absorpt_coefficient_mu    0.283
_exptl_absorpt_correction_T_max  0.895
_exptl_absorpt_correction_T_min  0.895
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
SADABS version 2004/1, G.M Sheldrick, University of 
G\"ttingen, Germany, 1996.
;
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    0.923
_exptl_crystal_description       prism
_exptl_crystal_F_000             576
_exptl_crystal_size_max          0.35
_exptl_crystal_size_mid          0.25
_exptl_crystal_size_min          0.20
_platon_squeeze_details
;
;
_refine_diff_density_max         0.217
_refine_diff_density_min         -0.360
_refine_diff_density_rms         0.063
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   0.02(3)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.110
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     100
_refine_ls_number_reflns         3000
_refine_ls_number_restraints     1
_refine_ls_restrained_S_all      1.110
_refine_ls_R_factor_all          0.0310
_refine_ls_R_factor_gt           0.0296
_refine_ls_shift/su_max          0.000
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0625P)^2^+0.0801P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0880
_refine_ls_wR_factor_ref         0.0886
_reflns_number_gt                2890
_reflns_number_total             3000
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ja2001049_si_003.cif
_cod_data_source_block           Compound3a
_cod_database_code               4106029