tert-Butylaluminum Bis[1,2-bis(trimethylsilyl)hydrazide]: The First Alkylaluminum Dihydrazide
Uhl, Werner; Molter, Jens; Neumüller, Bernhard; Organometallics 19 (2000) 4422–; doi:10.1021/om000330s

data_4077524
_publ_section_title
;
 tert-Butylaluminum Bis[1,2-bis(trimethylsilyl)hydrazide]: The First
 Alkylaluminum Dihydrazide
;
_journal_issue                   21
_journal_name_full               Organometallics
_journal_page_first              4422
_journal_paper_doi               10.1021/om000330s
_journal_volume                  19
_journal_year                    2000
_chemical_formula_sum            'C16 H47 Al N4 Si4'
_chemical_formula_weight         434.92
_chemical_name_systematic
;
?
;
_space_group_IT_number           56
_symmetry_cell_setting           1
_symmetry_space_group_name_Hall  '-P 2ab 2ac'
_symmetry_space_group_name_H-M   'P c c n'
_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                90.00
_cell_formula_units_Z            4
_cell_length_a                   11.9500(10)
_cell_length_b                   12.3870(10)
_cell_length_c                   19.3810(10)
_cell_measurement_temperature    293(2)
_cell_volume                     2868.9(4)
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      293(2)
_diffrn_measured_fraction_theta_full 0.998
_diffrn_measured_fraction_theta_max 0.998
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0223
_diffrn_reflns_av_sigmaI/netI    0.0248
_diffrn_reflns_limit_h_max       2
_diffrn_reflns_limit_h_min       -14
_diffrn_reflns_limit_k_max       14
_diffrn_reflns_limit_k_min       -14
_diffrn_reflns_limit_l_max       23
_diffrn_reflns_limit_l_min       -19
_diffrn_reflns_number            2628
_diffrn_reflns_theta_full        25.03
_diffrn_reflns_theta_max         25.03
_diffrn_reflns_theta_min         2.37
_exptl_absorpt_coefficient_mu    0.245
_exptl_crystal_density_diffrn    1.007
_exptl_crystal_density_method    'not measured'
_exptl_crystal_F_000             960
_refine_diff_density_max         0.792
_refine_diff_density_min         -0.294
_refine_diff_density_rms         0.065
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.161
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     141
_refine_ls_number_reflns         2540
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.161
_refine_ls_R_factor_all          0.0737
_refine_ls_R_factor_gt           0.0567
_refine_ls_shift/su_max          0.239
_refine_ls_shift/su_mean         0.008
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.1000P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1463
_refine_ls_wR_factor_ref         0.1585
_reflns_number_gt                1991
_reflns_number_total             2540
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            om000330s.cif
_cod_data_source_block           alhn2si2
_cod_original_sg_symbol_H-M      Pccn
_cod_database_code               4077524