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_7101853
_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            'C18 H19 N O4'
_chemical_formula_weight         313.34
_chemical_name_common            (S,aR)-1a
_chemical_name_systematic
;

(S,aR)-1a

;
_space_group_IT_number           4
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  'P 2yb'
_symmetry_space_group_name_H-M   'P 1 21 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                 116.392(2)
_cell_angle_gamma                90.00
_cell_formula_units_Z            2
_cell_length_a                   11.0267(17)
_cell_length_b                   6.9804(11)
_cell_length_c                   11.2114(17)
_cell_measurement_reflns_used    2170
_cell_measurement_temperature    173
_cell_measurement_theta_max      27.73
_cell_measurement_theta_min      3.48
_cell_volume                     773.0(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      173
_diffrn_detector_area_resol_mean 8.333
_diffrn_measured_fraction_theta_full 0.910
_diffrn_measured_fraction_theta_max 0.910
_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  0.0142
_diffrn_reflns_av_sigmaI/netI    0.0242
_diffrn_reflns_limit_h_max       14
_diffrn_reflns_limit_h_min       -12
_diffrn_reflns_limit_k_max       8
_diffrn_reflns_limit_k_min       -9
_diffrn_reflns_limit_l_max       13
_diffrn_reflns_limit_l_min       -14
_diffrn_reflns_number            4315
_diffrn_reflns_theta_full        28.25
_diffrn_reflns_theta_max         28.25
_diffrn_reflns_theta_min         2.03
_exptl_absorpt_coefficient_mu    0.095
_exptl_absorpt_correction_T_max  0.9812
_exptl_absorpt_correction_T_min  0.9539
_exptl_absorpt_correction_type   empirical
_exptl_absorpt_process_details
;
SADABS Sheldrick 1996
;
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.346
_exptl_crystal_density_meas      0
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       cubic
_exptl_crystal_F_000             332
_exptl_crystal_size_max          0.50
_exptl_crystal_size_mid          0.20
_exptl_crystal_size_min          0.20
_refine_diff_density_max         0.194
_refine_diff_density_min         -0.177
_refine_diff_density_rms         0.035
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   -0.1(11)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.057
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     210
_refine_ls_number_reflns         2791
_refine_ls_number_restraints     1
_refine_ls_restrained_S_all      1.057
_refine_ls_R_factor_all          0.0391
_refine_ls_R_factor_gt           0.0352
_refine_ls_shift/su_max          0.003
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0467P)^2^+0.1385P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0884
_refine_ls_wR_factor_ref         0.0914
_reflns_number_gt                2571
_reflns_number_total             2791
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            b617888j.txt
_cod_data_source_block           saka43_p21
_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.

Automatic conversion script
Id: cif_fix_enum 1527 2010-12-29 10:47:43Z saulius 
;
_cod_original_sg_symbol_H-M      P2(1)
_cod_database_code               7101853