Generation of Weakly Bound Al‒N Lewis Pairs by Hydroalumination of Ynamines and the Activation of Small Molecules: Phenylethyne and Dicyclohexylcarbodiimide
Holtrichter-Rößmann, Thorsten; Rösener, Christian; Hellmann, Johannes; Uhl, Werner; Würthwein, Ernst-Ulrich; Fröhlich, Roland; Wibbeling, Birgit; Organometallics 31 (2012) 3272–; doi:10.1021/om3001179

data_4078102
_publ_section_title
;
 Generation of Weakly Bound Al--N Lewis Pairs by Hydroalumination of
 Ynamines and the Activation of Small Molecules: Phenylethyne and
 Dicyclohexylcarbodiimide
;
_journal_issue                   8
_journal_name_full               Organometallics
_journal_page_first              3272
_journal_paper_doi               10.1021/om3001179
_journal_volume                  31
_journal_year                    2012
_chemical_formula_sum            'C20 H42 Al N Si'
_chemical_formula_weight         351.62
_chemical_name_systematic
; 
 ? 
;
_space_group_IT_number           2
_symmetry_cell_setting           triclinic
_symmetry_space_group_name_Hall  '-P 1'
_symmetry_space_group_name_H-M   'P -1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                89.542(1)
_cell_angle_beta                 77.895(1)
_cell_angle_gamma                80.942(1)
_cell_formula_units_Z            2
_cell_length_a                   10.2729(2)
_cell_length_b                   10.5164(2)
_cell_length_c                   10.9519(2)
_cell_measurement_reflns_used    3350
_cell_measurement_temperature    223(2)
_cell_measurement_theta_max      28.28
_cell_measurement_theta_min      4.08
_cell_volume                     1142.06(4)
_computing_cell_refinement       'Collect (Nonius B.V., 1998)'
_computing_data_collection       'CollecT (Nonius B.V., 1998)'
_computing_data_reduction        'Denzo-SMN (otwinowski & Minor, 1997)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      223(2)
_diffrn_measured_fraction_theta_full 0.979
_diffrn_measured_fraction_theta_max 0.979
_diffrn_measurement_device_type  'Nonius KappaCCD APEXII'
_diffrn_measurement_method       '\w and \f scans'
_diffrn_radiation_monochromator  'Montel mirror'
_diffrn_radiation_source         'rotating anode Nonius FR591'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.038
_diffrn_reflns_av_sigmaI/netI    0.0336
_diffrn_reflns_limit_h_max       13
_diffrn_reflns_limit_h_min       -13
_diffrn_reflns_limit_k_max       13
_diffrn_reflns_limit_k_min       -13
_diffrn_reflns_limit_l_max       14
_diffrn_reflns_limit_l_min       -14
_diffrn_reflns_number            11511
_diffrn_reflns_theta_full        28.30
_diffrn_reflns_theta_max         28.30
_diffrn_reflns_theta_min         4.11
_exptl_absorpt_coefficient_mu    0.143
_exptl_absorpt_correction_T_max  0.9859
_exptl_absorpt_correction_T_min  0.9491
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
'Denzo (otwinowski, Borek, Majewski & Minor, 2003)'
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.022
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       plate
_exptl_crystal_F_000             392
_exptl_crystal_size_max          0.37
_exptl_crystal_size_mid          0.23
_exptl_crystal_size_min          0.10
_refine_diff_density_max         0.271
_refine_diff_density_min         -0.263
_refine_diff_density_rms         0.042
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.058
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     245
_refine_ls_number_reflns         5556
_refine_ls_number_restraints     121
_refine_ls_restrained_S_all      1.166
_refine_ls_R_factor_all          0.0565
_refine_ls_R_factor_gt           0.0491
_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^)+(0.0386P)^2^+0.6218P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1158
_refine_ls_wR_factor_ref         0.1229
_reflns_number_gt                4893
_reflns_number_total             5556
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            om3001179_si_004.cif
_cod_data_source_block           wue6262
_cod_original_sg_symbol_H-M      P-1
_cod_database_code               4078102