Resolution of Planar-Chiral Ferrocenylborane Lewis Acids: The Impact of Steric Effects on the Stereoselective Binding of Ephedrine Derivatives
Boshra, Ramez; Venkatasubbaiah, Krishnan; Doshi, Ami; Jäkle, Frieder; Organometallics 28 (2009) 4141–; doi:10.1021/om900303j

data_4069615
_publ_section_title
;
 Resolution of Planar-Chiral Ferrocenylborane Lewis Acids: The Impact of
 Steric Effects on the Stereoselective Binding of Ephedrine Derivatives
;
_journal_issue                   14
_journal_name_full               Organometallics
_journal_page_first              4141
_journal_paper_doi               10.1021/om900303j
_journal_volume                  28
_journal_year                    2009
_chemical_formula_moiety         'C23 H31 B Cl Fe N O Sn'
_chemical_formula_sum            'C23 H31 B Cl Fe N O Sn'
_chemical_formula_weight         558.29
_chemical_name_systematic
;
 ?
;
_space_group_IT_number           19
_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_Hall  'P 2ac 2ab'
_symmetry_space_group_name_H-M   'P 21 21 21'
_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                   12.9670(2)
_cell_length_b                   13.1525(2)
_cell_length_c                   13.7370(2)
_cell_measurement_reflns_used    9999
_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      68.66
_cell_measurement_theta_min      3.22
_cell_volume                     2342.82(6)
_computing_cell_refinement       SMART
_computing_data_collection       'SMART (Bruker, 2000)'
_computing_data_reduction        'SAINT-Plus (Bruker, 2000)'
_computing_molecular_graphics    'SHELXTL (Bruker, 2000)'
_computing_publication_material  SHELXTL
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      100(2)
_diffrn_measured_fraction_theta_full 0.987
_diffrn_measured_fraction_theta_max 0.988
_diffrn_measurement_device_type  'Bruker SMART CCD area-detector'
_diffrn_measurement_method       '\f and \w'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           CuK\a
_diffrn_radiation_wavelength     1.54178
_diffrn_reflns_av_R_equivalents  0.0263
_diffrn_reflns_av_sigmaI/netI    0.0350
_diffrn_reflns_limit_h_max       15
_diffrn_reflns_limit_h_min       -15
_diffrn_reflns_limit_k_max       15
_diffrn_reflns_limit_k_min       -15
_diffrn_reflns_limit_l_max       16
_diffrn_reflns_limit_l_min       -15
_diffrn_reflns_number            21495
_diffrn_reflns_theta_full        69.42
_diffrn_reflns_theta_max         69.42
_diffrn_reflns_theta_min         4.65
_exptl_absorpt_coefficient_mu    14.589
_exptl_absorpt_correction_T_max  0.2968
_exptl_absorpt_correction_T_min  0.1496
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   '(SADABS; Blessing, 1995)'
_exptl_crystal_colour            Yellow
_exptl_crystal_density_diffrn    1.583
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       Block
_exptl_crystal_F_000             1128
_exptl_crystal_size_max          0.21
_exptl_crystal_size_mid          0.13
_exptl_crystal_size_min          0.11
_refine_diff_density_max         0.552
_refine_diff_density_min         -0.472
_refine_diff_density_rms         0.064
_refine_ls_abs_structure_details 'Flack (1983), 1714 Friedel pairs'
_refine_ls_abs_structure_Flack   0.020(4)
_refine_ls_goodness_of_fit_ref   1.045
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     267
_refine_ls_number_reflns         4165
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.045
_refine_ls_R_factor_all          0.0175
_refine_ls_R_factor_gt           0.0171
_refine_ls_shift/su_max          0.017
_refine_ls_shift/su_mean         0.001
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0128P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0400
_refine_ls_wR_factor_ref         0.0401
_reflns_number_gt                4112
_reflns_number_total             4165
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            om900303j_si_002.cif
_cod_data_source_block           compoundSp3
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Orthorhombic' changed to
'orthorhombic' according to
/home/saulius/struct/CIF-dictionaries/cif_core.dic dictionary named
'cif_core.dic' version 2.4.2 from 2011-04-26.

Automatic conversion script
Id: cif_fix_values 1715 2011-07-08 13:25:40Z adriana 
;
_cod_original_sg_symbol_H-M      P2(1)2(1)2(1)
_cod_database_code               4069615