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_4078100
_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           57
_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_Hall  '-P 2c 2b'
_symmetry_space_group_name_H-M   'P b c m'
_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                   9.3869(1)
_cell_length_b                   16.6437(4)
_cell_length_c                   15.1145(3)
_cell_measurement_reflns_used    3033
_cell_measurement_temperature    223(2)
_cell_measurement_theta_max      27.88
_cell_measurement_theta_min      4.08
_cell_volume                     2361.38(8)
_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_molecular_graphics    'XP (BrukerAXS, 2000)'
_computing_publication_material  'SHELXL-97 (Sheldrick, 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 0.985
_diffrn_measured_fraction_theta_max 0.985
_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  0.044
_diffrn_reflns_av_sigmaI/netI    0.0280
_diffrn_reflns_limit_h_max       12
_diffrn_reflns_limit_h_min       -12
_diffrn_reflns_limit_k_max       21
_diffrn_reflns_limit_k_min       -21
_diffrn_reflns_limit_l_max       19
_diffrn_reflns_limit_l_min       -19
_diffrn_reflns_number            13642
_diffrn_reflns_theta_full        27.88
_diffrn_reflns_theta_max         27.88
_diffrn_reflns_theta_min         4.24
_exptl_absorpt_coefficient_mu    0.138
_exptl_absorpt_correction_T_max  0.9904
_exptl_absorpt_correction_T_min  0.9533
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
'Denzo (Otwinowski, Borek, Majewski & Minor, 2003)'
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    0.989
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       plate
_exptl_crystal_F_000             784
_exptl_crystal_size_max          0.35
_exptl_crystal_size_mid          0.20
_exptl_crystal_size_min          0.07
_refine_diff_density_max         0.218
_refine_diff_density_min         -0.205
_refine_diff_density_rms         0.033
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.038
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     135
_refine_ls_number_reflns         2880
_refine_ls_number_restraints     14
_refine_ls_restrained_S_all      1.049
_refine_ls_R_factor_all          0.0719
_refine_ls_R_factor_gt           0.0561
_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^)+(0.0405P)^2^+1.0950P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1246
_refine_ls_wR_factor_ref         0.1358
_reflns_number_gt                2286
_reflns_number_total             2880
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            om3001179_si_002.cif
_cod_data_source_block           wue5597
_cod_original_sg_symbol_H-M      Pbcm
_cod_database_code               4078100