m-Carborane-Based Chiral NBN Pincer-Metal Complexes: Synthesis, Structure, and Application in Asymmetric Catalysis
Mohamed E. El-Zaria; Hidekazu Arii; Hiroyuki Nakamura; Inorganic Chemistry 50 (2011) 4149–4161; doi:10.1021/ic2002095

data_4325007
_publ_section_title
;
 m-Carborane-Based Chiral NBN Pincer-Metal Complexes: Synthesis,
 Structure, and Application in Asymmetric Catalysis
;
_journal_name_full               'Inorganic Chemistry'
_journal_page_first              4149
_journal_page_last               4161
_journal_paper_doi               10.1021/ic2002095
_journal_volume                  50
_journal_year                    2011
_chemical_absolute_configuration rmad
_chemical_formula_sum            'C14 H32 B10 Br2 N2 O2'
_chemical_formula_weight         528.34
_chemical_name_systematic
; 
 ? 
;
_space_group_IT_number           96
_symmetry_cell_setting           tetragonal
_symmetry_space_group_name_Hall  'P 4nw 2abw'
_symmetry_space_group_name_H-M   'P 43 21 2'
_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            8
_cell_length_a                   21.6668(17)
_cell_length_b                   21.6668(17)
_cell_length_c                   10.4424(8)
_cell_measurement_reflns_used    9902
_cell_measurement_temperature    123
_cell_measurement_theta_max      26.59
_cell_measurement_theta_min      2.16
_cell_volume                     4902.2(7)
_computing_cell_refinement       'APEX2 (Bruker AXS, 2006)'
_computing_data_collection       'APEX2 (Bruker AXS, 2006)'
_computing_data_reduction        'SAINT (Bruker AXS, 2004)'
_computing_molecular_graphics    'XSHEL (Bruker AXS,2002)'
_computing_publication_material  'XCIF (Bruker AXS, 2001)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1997)'
_diffrn_ambient_temperature      123
_diffrn_detector_area_resol_mean 8.333
_diffrn_measured_fraction_theta_full 0.998
_diffrn_measured_fraction_theta_max 0.998
_diffrn_measurement_device_type  'Bruker APEXII CCD area detector'
_diffrn_measurement_method       'phi and omega scans'
_diffrn_radiation_monochromator  'Bruker Helios multilayer confocal mirror'
_diffrn_radiation_source         'Bruker TXS fine-focus rotating anode'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0315
_diffrn_reflns_av_sigmaI/netI    0.0352
_diffrn_reflns_limit_h_max       28
_diffrn_reflns_limit_h_min       -26
_diffrn_reflns_limit_k_max       27
_diffrn_reflns_limit_k_min       -14
_diffrn_reflns_limit_l_max       13
_diffrn_reflns_limit_l_min       -13
_diffrn_reflns_number            27665
_diffrn_reflns_theta_full        27.50
_diffrn_reflns_theta_max         27.50
_diffrn_reflns_theta_min         1.33
_exptl_absorpt_coefficient_mu    3.321
_exptl_absorpt_correction_T_max  0.7324
_exptl_absorpt_correction_T_min  0.5564
_exptl_absorpt_correction_type   empirical
_exptl_absorpt_process_details
;
SADABS Sheldrick 1996
;
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.432
_exptl_crystal_description       prism
_exptl_crystal_F_000             2128
_exptl_crystal_size_max          0.20
_exptl_crystal_size_mid          0.15
_exptl_crystal_size_min          0.10
_refine_diff_density_max         0.598
_refine_diff_density_min         -0.231
_refine_diff_density_rms         0.046
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   0.029(6)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.057
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     323
_refine_ls_number_reflns         5605
_refine_ls_number_restraints     1
_refine_ls_restrained_S_all      1.057
_refine_ls_R_factor_all          0.0320
_refine_ls_R_factor_gt           0.0259
_refine_ls_shift/su_max          0.002
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0302P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0592
_refine_ls_wR_factor_ref         0.0608
_reflns_number_gt                5041
_reflns_number_total             5605
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ic2002095_si_002_5.cif
_cod_data_source_block           compound13
_cod_database_code               4325007