Lewis-Base Stabilization of the Parent Al(I) Hydride under Ambient Conditions.
Mellerup, Soren K.; Cui, Yunshu; Fantuzzi, Felipe; Schmid, Paul; Goettel, James T.; Bélanger-Chabot, Guillaume; Arrowsmith, Merle; Krummenacher, Ivo; Ye, Qing; Engel, Volker; Engels, Bernd; Braunschweig, Holger; Journal of the American Chemical Society 141 (2019) 16954–16960; doi:10.1021/jacs.9b09128

data_4127946
_publ_section_title
;
 Lewis-Base Stabilization of the Parent Al(I) Hydride under Ambient
 Conditions.
;
_journal_issue                   42
_journal_name_full               'Journal of the American Chemical Society'
_journal_page_first              16954
_journal_page_last               16960
_journal_paper_doi               10.1021/jacs.9b09128
_journal_volume                  141
_journal_year                    2019
_chemical_formula_moiety         'C40 H63 Al Cl2 N2'
_chemical_formula_sum            'C40 H63 Al Cl2 N2'
_chemical_formula_weight         669.80
_space_group_crystal_system      monoclinic
_space_group_IT_number           14
_space_group_name_Hall           '-P 2yn'
_space_group_name_H-M_alt        'P 1 21/n 1'
_symmetry_space_group_name_Hall  '-P 2yn'
_symmetry_space_group_name_H-M   'P 1 21/n 1'
_atom_sites_solution_hydrogens   mixed
_atom_sites_solution_primary     dual
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-2014/7
_cell_angle_alpha                90
_cell_angle_beta                 111.537(14)
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   12.642(6)
_cell_length_b                   19.274(8)
_cell_length_c                   17.059(7)
_cell_measurement_reflns_used    9922
_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      27.50
_cell_measurement_theta_min      2.47
_cell_volume                     3866(3)
_computing_cell_refinement       'Saint+ ver. V8.37A (Bruker AXS)'
_computing_data_collection       'APEX2 ver. 2014.9 (Bruker AXS)'
_computing_data_reduction        'Saint+ ver. V8.37A (Bruker AXS)'
_computing_molecular_graphics    'ShelXLe (Huebschle et all, 2011)'
_computing_publication_material  'SHELXL-2014/7 (Sheldrick, 2014)'
_computing_structure_refinement  'SHELXL-2014/7 (Sheldrick, 2014)'
_computing_structure_solution    'SHELXT (Sheldrick, 2014)'
_diffrn_ambient_temperature      100(2)
_diffrn_detector                 'CCD area detector (Apex2)'
_diffrn_detector_area_resol_mean 8.333
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.995
_diffrn_measurement_device_type  'Bruker X8-APEX II'
_diffrn_measurement_method       '\f and \w scans'
_diffrn_radiation_monochromator  'multi-layer mirror'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0536
_diffrn_reflns_av_unetI/netI     0.0491
_diffrn_reflns_Laue_measured_fraction_full 0.999
_diffrn_reflns_Laue_measured_fraction_max 0.995
_diffrn_reflns_limit_h_max       15
_diffrn_reflns_limit_h_min       -16
_diffrn_reflns_limit_k_max       25
_diffrn_reflns_limit_k_min       -25
_diffrn_reflns_limit_l_max       21
_diffrn_reflns_limit_l_min       -21
_diffrn_reflns_number            35186
_diffrn_reflns_point_group_measured_fraction_full 0.999
_diffrn_reflns_point_group_measured_fraction_max 0.995
_diffrn_reflns_theta_full        26.000
_diffrn_reflns_theta_max         27.546
_diffrn_reflns_theta_min         2.113
_diffrn_source                   'rotating-anode (Nonius FR-591)'
_exptl_absorpt_coefficient_mu    0.220
_exptl_absorpt_correction_T_max  0.7456
_exptl_absorpt_correction_T_min  0.6679
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SadAbs 2016/2 (Bruker AXS)'
_exptl_crystal_colour            orange
_exptl_crystal_density_diffrn    1.151
_exptl_crystal_description       Block
_exptl_crystal_F_000             1456
_exptl_crystal_size_max          0.342
_exptl_crystal_size_mid          0.307
_exptl_crystal_size_min          0.194
_refine_diff_density_max         0.411
_refine_diff_density_min         -0.244
_refine_diff_density_rms         0.056
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.022
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     426
_refine_ls_number_reflns         8879
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.022
_refine_ls_R_factor_all          0.0502
_refine_ls_R_factor_gt           0.0389
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0479P)^2^+1.1961P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0966
_refine_ls_wR_factor_ref         0.1041
_reflns_Friedel_coverage         0.000
_reflns_number_gt                7324
_reflns_number_total             8879
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            ja9b09128_si_002.cif
_cod_data_source_block           (cAAC)(cAAC-H)AlCl2
_cod_database_code               4127946
_shelx_shelxl_version_number     2014/7
_shelx_estimated_absorpt_t_min   0.929
_shelx_estimated_absorpt_t_max   0.959
_shelx_res_checksum              43398
_shelx_hkl_checksum              91054