Diastereoselective photocycloaddition using memory effect of molecular chirality controlled by crystallization.
Sakamoto, Masami; Unosawa, Atsushi; Kobaru, Shuichiro; Hasegawa, Yasuhiro; Mino, Takashi; Kasashima, Yoshio; Fujita, Tsutomu; Chemical communications (Cambridge, England)  (2007) 1632–1634; doi:10.1039/b617888j

data_7101855
_publ_section_title
;
 Diastereoselective photocycloaddition using memory effect of molecular
 chirality controlled by crystallization.
;
_journal_issue                   16
_journal_name_full               'Chemical communications (Cambridge, England)'
_journal_page_first              1632
_journal_page_last               1634
_journal_paper_doi               10.1039/b617888j
_journal_year                    2007
_chemical_formula_sum            'C34 H30 N2 O4'
_chemical_formula_weight         530.60
_chemical_name_common            (S)-2b
_chemical_name_systematic
;
(S)-2b
;
_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                   10.1974(5)
_cell_length_b                   12.5011(6)
_cell_length_c                   21.8192(10)
_cell_measurement_reflns_used    3733
_cell_measurement_temperature    223
_cell_measurement_theta_max      21.99
_cell_measurement_theta_min      2.20
_cell_volume                     2781.5(2)
_computing_cell_refinement       'Bruker SMART'
_computing_data_collection       'Bruker SMART'
_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      223
_diffrn_detector_area_resol_mean 8.333
_diffrn_measured_fraction_theta_full 0.959
_diffrn_measured_fraction_theta_max 0.959
_diffrn_measurement_device_type  'CCD area detector'
_diffrn_measurement_method       'phi and omega scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0287
_diffrn_reflns_av_sigmaI/netI    0.0431
_diffrn_reflns_limit_h_max       13
_diffrn_reflns_limit_h_min       -13
_diffrn_reflns_limit_k_max       15
_diffrn_reflns_limit_k_min       -15
_diffrn_reflns_limit_l_max       12
_diffrn_reflns_limit_l_min       -28
_diffrn_reflns_number            15835
_diffrn_reflns_theta_full        28.14
_diffrn_reflns_theta_max         28.14
_diffrn_reflns_theta_min         1.87
_exptl_absorpt_coefficient_mu    0.083
_exptl_absorpt_correction_T_max  0.9917
_exptl_absorpt_correction_T_min  0.9755
_exptl_absorpt_correction_type   empirical
_exptl_absorpt_process_details
;
SADABS Sheldric 1996
;
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.267
_exptl_crystal_density_meas      0
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       plate
_exptl_crystal_F_000             1120
_exptl_crystal_size_max          0.30
_exptl_crystal_size_mid          0.20
_exptl_crystal_size_min          0.10
_refine_diff_density_max         0.185
_refine_diff_density_min         -0.156
_refine_diff_density_rms         0.033
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   0.2(12)
_refine_ls_extinction_coef       0.0013(8)
_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   0.768
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     364
_refine_ls_number_reflns         6390
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      0.768
_refine_ls_R_factor_all          0.0678
_refine_ls_R_factor_gt           0.0418
_refine_ls_shift/su_max          0.002
_refine_ls_shift/su_mean         0.001
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.1000P)^2^+0.7126P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1095
_refine_ls_wR_factor_ref         0.1332
_reflns_number_gt                4693
_reflns_number_total             6390
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            b617888j.txt
_cod_data_source_block           saka19b_p212121
_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 2.4.1 from 2010-06-29.

Automatic conversion script
Id: cif_fix_enum 1527 2010-12-29 10:47:43Z saulius 
;
_cod_original_sg_symbol_H-M      P2(1)2(1)2(1)
_cod_database_code               7101855