Role of Regioisomeric Bicyclo[3.3.0]octa-2,5-diene Ligands in Rh Catalysis: Synthesis, Structural Analysis, Theoretical Study, and Application in Asymmetric 1,2- and 1,4-Additions.
Mühlhäuser, Tina; Savin, Alex; Frey, Wolfgang; Baro, Angelika; Schneider, Andreas J.; Döteberg, Heinz-Günter; Bauer, Florian; Köhn, Andreas; Laschat, Sabine; The Journal of organic chemistry 82 (2017) 13468–13480; doi:10.1021/acs.joc.7b02601

data_4033184
_publ_section_title
;
 Role of Regioisomeric Bicyclo[3.3.0]octa-2,5-diene Ligands in Rh
 Catalysis: Synthesis, Structural Analysis, Theoretical Study, and
 Application in Asymmetric 1,2- and 1,4-Additions.
;
_journal_issue                   24
_journal_name_full               'The Journal of organic chemistry'
_journal_page_first              13468
_journal_page_last               13480
_journal_paper_doi               10.1021/acs.joc.7b02601
_journal_volume                  82
_journal_year                    2017
_chemical_absolute_configuration unk
_chemical_formula_moiety         'C20 H18'
_chemical_formula_sum            'C20 H18'
_chemical_formula_weight         258.34
_chemical_name_systematic
; 
 'Compound 2a' 
;
_space_group_IT_number           5
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  'C 2y'
_symmetry_space_group_name_H-M   'C 1 2 1'
_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                 111.418(5)
_cell_angle_gamma                90.00
_cell_formula_units_Z            2
_cell_length_a                   12.0569(8)
_cell_length_b                   4.7415(3)
_cell_length_c                   13.0804(9)
_cell_measurement_reflns_used    1115
_cell_measurement_temperature    130(2)
_cell_measurement_theta_max      65.56
_cell_measurement_theta_min      3.63
_cell_volume                     696.14(8)
_computing_cell_refinement       'Bruker APEXII Software Suite, 2008'
_computing_data_collection       'Bruker APEXII Software Suite, 2008'
_computing_data_reduction        'Bruker APEXII Software Suite, 2008'
_computing_molecular_graphics    'SHELXTL-plus, XP (Sheldrick, 1991)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      130(2)
_diffrn_measured_fraction_theta_full 0.975
_diffrn_measured_fraction_theta_max 0.977
_diffrn_measurement_device_type  'Bruker Kappa APEXII Duo'
_diffrn_measurement_method       'omega + Phi Scans'
_diffrn_radiation_monochromator  Triumph
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           CuK\a
_diffrn_radiation_wavelength     1.54178
_diffrn_reflns_av_R_equivalents  0.0441
_diffrn_reflns_av_sigmaI/netI    0.0291
_diffrn_reflns_limit_h_max       9
_diffrn_reflns_limit_h_min       -14
_diffrn_reflns_limit_k_max       5
_diffrn_reflns_limit_k_min       -5
_diffrn_reflns_limit_l_max       15
_diffrn_reflns_limit_l_min       -14
_diffrn_reflns_number            5698
_diffrn_reflns_theta_full        65.56
_diffrn_reflns_theta_max         65.56
_diffrn_reflns_theta_min         3.63
_diffrn_standards_decay_%        0
_diffrn_standards_interval_count 0
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.520
_exptl_absorpt_correction_T_max  0.7528
_exptl_absorpt_correction_T_min  0.6122
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'Blessing, 1995'
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.232
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       plates
_exptl_crystal_F_000             276
_exptl_crystal_size_max          0.41
_exptl_crystal_size_mid          0.24
_exptl_crystal_size_min          0.06
_refine_diff_density_max         0.120
_refine_diff_density_min         -0.092
_refine_diff_density_rms         0.025
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   -1.1(19)
_refine_ls_extinction_coef       0.0026(7)
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^
_refine_ls_extinction_method     SHELXL
_refine_ls_goodness_of_fit_ref   1.024
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     100
_refine_ls_number_reflns         1178
_refine_ls_number_restraints     1
_refine_ls_restrained_S_all      1.023
_refine_ls_R_factor_all          0.0298
_refine_ls_R_factor_gt           0.0279
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0410P)^2^+0.1360P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0721
_refine_ls_wR_factor_ref         0.0732
_reflns_number_gt                1115
_reflns_number_total             1178
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            jo7b02601_si_002.cif
_cod_data_source_block           s2303lc
_cod_depositor_comments
'Adding full bibliography for 4033184--4033187.cif.'
_cod_original_sg_symbol_H-M      'C 2'
_cod_database_code               4033184