Photochemical type II reaction of atropchiral benzoylformamides to point chiral oxazolidin-4-ones. Axial chiral memory leading to enantiomeric resolution of photoproducts.
Jesuraj, Josepha L.; Sivaguru, J.; Chemical communications (Cambridge, England) 46 (2010) 4791–4793; doi:10.1039/c0cc00470g

data_7112835
_publ_section_title
;
 Photochemical type II reaction of atropchiral benzoylformamides to point
 chiral oxazolidin-4-ones. Axial chiral memory leading to enantiomeric
 resolution of photoproducts.
;
_journal_issue                   26
_journal_name_full               'Chemical communications (Cambridge, England)'
_journal_page_first              4791
_journal_page_last               4793
_journal_paper_doi               10.1039/c0cc00470g
_journal_volume                  46
_journal_year                    2010
_chemical_formula_sum            'C24 H29 N O2'
_chemical_formula_weight         363.48
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-P 2yn'
_symmetry_space_group_name_H-M   'P 1 21/n 1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_conform_dict_location     ftp://ftp.iucr.org/pub/cif_core.dic
_audit_conform_dict_name         cif_core.dic
_audit_conform_dict_version      2.4
_audit_creation_date             2009-11-24T14:48:32-00:00
_audit_creation_method           'WinGX routine CIF_UPDATE'
_cell_angle_alpha                90
_cell_angle_beta                 99.457(3)
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   8.7836(18)
_cell_length_b                   10.399(2)
_cell_length_c                   22.804(5)
_cell_measurement_reflns_used    4987
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      26.65
_cell_measurement_theta_min      2.16
_cell_volume                     2054.6(7)
_computing_cell_refinement       'Bruker SAINT'
_computing_data_collection       'SMART 1K'
_computing_data_reduction        'Bruker SAINT'
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'Bruker SHELXTL'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      293(2)
_diffrn_measured_fraction_theta_full 0.997
_diffrn_measured_fraction_theta_max 0.997
_diffrn_measurement_device_type  'CCD area detector'
_diffrn_measurement_method       'phi and omega scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0489
_diffrn_reflns_av_unetI/netI     0.0425
_diffrn_reflns_limit_h_max       11
_diffrn_reflns_limit_h_min       -11
_diffrn_reflns_limit_k_max       13
_diffrn_reflns_limit_k_min       -11
_diffrn_reflns_limit_l_max       29
_diffrn_reflns_limit_l_min       -27
_diffrn_reflns_number            18137
_diffrn_reflns_theta_full        27.02
_diffrn_reflns_theta_max         27.02
_diffrn_reflns_theta_min         1.81
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.074
_exptl_absorpt_correction_T_max  0.7455
_exptl_absorpt_correction_T_min  0.6511
_exptl_absorpt_correction_type   numerical
_exptl_absorpt_process_details   'SADABS (SAINT 6.45A)'
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.175
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       plate
_exptl_crystal_F_000             784
_exptl_crystal_size_max          0.56
_exptl_crystal_size_mid          0.5
_exptl_crystal_size_min          0.15
_refine_diff_density_max         0.33
_refine_diff_density_min         -0.234
_refine_diff_density_rms         0.096
_refine_ls_extinction_coef       0.023(3)
_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   1.069
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     245
_refine_ls_number_reflns         4488
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.069
_refine_ls_R_factor_all          0.0784
_refine_ls_R_factor_gt           0.0505
_refine_ls_shift/su_max          0
_refine_ls_shift/su_mean         0
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0872P)^2^+0.1620P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1386
_refine_ls_wR_factor_ref         0.162
_reflns_number_gt                3072
_reflns_number_total             4488
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c0cc00470g.txt
_cod_data_source_block           cis-2d
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Monoclinic' changed to 'monoclinic'
according to
/usr/data/users/saulius/automatic-downloads/retrospective/RSC/lib/dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.2 from 2011-04-26.

Automatic conversion script
Id: cif_fix_values 2281 2013-09-26 08:29:07Z andrius 
;
_cod_original_sg_symbol_H-M      P2(1)/n
_cod_database_code               7112835