Chromium-Catalyzed Radical Cyclization of Bromo and Chloro Acetals
MacLeod, K. Cory; Patrick, Brian O.; Smith, Kevin M.; Organometallics 29 (2010) 6639–; doi:10.1021/om101068r

data_4067251
_publ_section_title
;
 Chromium-Catalyzed Radical Cyclization of Bromo and Chloro Acetals
;
_journal_issue                   24
_journal_name_full               Organometallics
_journal_page_first              6639
_journal_paper_doi               10.1021/om101068r
_journal_volume                  29
_journal_year                    2010
_chemical_formula_sum            'C34 H43 Cr N2 O2'
_chemical_formula_weight         563.70
_chemical_name_systematic
;
 ?
;
_space_group_IT_number           15
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-C 2yc'
_symmetry_space_group_name_H-M   'C 1 2/c 1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                90.000(5)
_cell_angle_beta                 91.591(5)
_cell_angle_gamma                90.000(5)
_cell_formula_units_Z            8
_cell_length_a                   24.975(5)
_cell_length_b                   15.317(5)
_cell_length_c                   15.096(5)
_cell_measurement_reflns_used    9975
_cell_measurement_temperature    173(2)
_cell_measurement_theta_max      27.87
_cell_measurement_theta_min      2.66
_cell_volume                     5773(3)
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_diffrn_ambient_temperature      173(2)
_diffrn_measured_fraction_theta_full 0.997
_diffrn_measured_fraction_theta_max 0.997
_diffrn_measurement_device_type  'Bruker X8 APEX II'
_diffrn_measurement_method       'area detector'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71069
_diffrn_reflns_av_R_equivalents  0.0328
_diffrn_reflns_av_sigmaI/netI    0.0242
_diffrn_reflns_limit_h_max       32
_diffrn_reflns_limit_h_min       -32
_diffrn_reflns_limit_k_max       19
_diffrn_reflns_limit_k_min       -20
_diffrn_reflns_limit_l_max       19
_diffrn_reflns_limit_l_min       -13
_diffrn_reflns_number            39809
_diffrn_reflns_theta_full        27.91
_diffrn_reflns_theta_max         27.91
_diffrn_reflns_theta_min         1.56
_exptl_absorpt_coefficient_mu    0.430
_exptl_absorpt_correction_T_max  0.918
_exptl_absorpt_correction_T_min  0.815
_exptl_absorpt_correction_type   multi-scan
_exptl_crystal_colour            black
_exptl_crystal_density_diffrn    1.297
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       prism
_exptl_crystal_F_000             2408
_exptl_crystal_size_max          0.30
_exptl_crystal_size_mid          0.25
_exptl_crystal_size_min          0.20
_refine_diff_density_max         0.621
_refine_diff_density_min         -0.371
_refine_diff_density_rms         0.056
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.055
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     425
_refine_ls_number_reflns         6895
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.055
_refine_ls_R_factor_all          0.0508
_refine_ls_R_factor_gt           0.0361
_refine_ls_shift/su_max          0.076
_refine_ls_shift/su_mean         0.003
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0451P)^2^+8.0476P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0917
_refine_ls_wR_factor_ref         0.1002
_reflns_number_gt                5542
_reflns_number_total             6895
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            om101068r_si_002.cif
_cod_data_source_block           3
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Monoclinic' changed to 'monoclinic'
according to /home/saulius/struct/CIF-dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.1 from
2010-06-29.

'_exptl_absorpt_correction_type' value 'Multi-scan'
changed to 'multi-scan' according to
/home/saulius/struct/CIF-dictionaries/cif_core.dic dictionary named
'cif_core.dic' version 2.4.1 from 2010-06-29.

Automatic conversion script
Id: cif_fix_values 1715 2011-07-08 13:25:40Z adriana 
;
_cod_original_sg_symbol_H-M      'C 2/c'
_cod_original_formula_sum        'C34 H43 Cr1 N2 O2'
_cod_database_code               4067251