A comparative study of the behaviour of N-trimethylsilyl and N-neopentyl-anilines and 1,2-diaminobenzenes towards trimethylalane; X-ray structures of nine Al‒N compounds
Bezombes, Jean-Philippe; Gehrhus, Barbara; Hitchcock, Peter B.; Lappert, Michael F.; Merle, Philippe G.; Dalton Transactions  (2003) 1821–; doi:10.1039/b300957m

data_7012764
_publ_section_title
;
 A comparative study of the behaviour of N-trimethylsilyl and
 N-neopentyl-anilines and 1,2-diaminobenzenes towards trimethylalane;
 X-ray structures of nine Al--N compounds
;
_journal_issue                   9
_journal_name_full               'Dalton Transactions'
_journal_page_first              1821
_journal_paper_doi               10.1039/b300957m
_journal_year                    2003
_chemical_compound_source        'synthesis as described'
_chemical_formula_moiety         'C22 H40 Al2 N2 Si2'
_chemical_formula_structural     'C22 H40 Al2 N2 Si2'
_chemical_formula_sum            'C22 H40 Al2 N2 Si2'
_chemical_formula_weight         442.7
_chemical_name_common            '[{AlMe2(PhNSiMe3)}2]'
_space_group_IT_number           114
_symmetry_cell_setting           tetragonal
_symmetry_Int_Tables_number      114
_symmetry_space_group_name_Hall  'P -4 2n'
_symmetry_space_group_name_H-M   'P -4 21 c'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_conform_dict_location     ftp://ftp.iucr.org/cifdics/cif_core.dic
_audit_conform_dict_name         cif_core.dic
_audit_conform_dict_version      2.1
_audit_creation_date             2000-10-13T11:48:04-00:00
_audit_creation_method           'WinGX routine CIF_UPDATE'
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_formula_units_Z            8
_cell_length_a                   17.2628(3)
_cell_length_b                   17.2628(3)
_cell_length_c                   18.0235(5)
_cell_measurement_reflns_used    12614
_cell_measurement_temperature    173(2)
_cell_measurement_theta_max      25.028
_cell_measurement_theta_min      3.705
_cell_measurement_wavelength     0.71073
_cell_volume                     5371.1(2)
_computing_cell_refinement       'HKL Scalepack (Otwinowski & Minor 1997)'
_computing_data_reduction
'HKL Denzo and Scalepack (Otwinowski & Minor 1997)'
_computing_molecular_graphics    'Ortep-3 for Windows (Farrugia, 1997)'
_computing_publication_material  'WinGX publication routines (Farrugia, 1999)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_diffrn_ambient_temperature      173(2)
_diffrn_measured_fraction_theta_full 0.994
_diffrn_measured_fraction_theta_max 0.994
_diffrn_measurement_device       KappaCCD
_diffrn_measurement_method       CCD
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_probe          x-ray
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0629
_diffrn_reflns_av_unetI/netI     0.049
_diffrn_reflns_limit_h_max       18
_diffrn_reflns_limit_h_min       -17
_diffrn_reflns_limit_k_max       20
_diffrn_reflns_limit_k_min       -17
_diffrn_reflns_limit_l_max       17
_diffrn_reflns_limit_l_min       -21
_diffrn_reflns_number            22802
_diffrn_reflns_theta_full        25.02
_diffrn_reflns_theta_max         25.02
_diffrn_reflns_theta_min         3.72
_exptl_absorpt_coefficient_mu    0.208
_exptl_absorpt_correction_T_max  0.9215
_exptl_absorpt_correction_T_min  0.9215
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.095
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       prism
_exptl_crystal_F_000             1920
_exptl_crystal_size_max          0.4
_exptl_crystal_size_mid          0.4
_exptl_crystal_size_min          0.4
_refine_diff_density_max         0.296
_refine_diff_density_min         -0.337
_refine_diff_density_rms         0.041
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   -0.10(15)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.02
_refine_ls_hydrogen_treatment    riding
_refine_ls_matrix_type           full
_refine_ls_number_parameters     253
_refine_ls_number_reflns         4738
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.02
_refine_ls_R_factor_all          0.0592
_refine_ls_R_factor_gt           0.0431
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0361P)^2^+3.4732P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.092
_refine_ls_wR_factor_ref         0.0994
_reflns_number_gt                3976
_reflns_number_total             4738
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            b300957m.txt
_cod_data_source_block           lappert-1
_cod_original_sg_symbol_H-M      P-42(1)c
_cod_database_code               7012764