Stereolabile chiral biphenyl hybrids: crystallization-induced dynamic atropselective resolution involving supramolecular interactions
Yeung, Chi-Tung; Yeung, Ho-Lun; Chan, Wesley Ting Kwok; Yan, Siu-Cheong; Tam, Eric C. Y.; Wong, Ka-Leung; Lee, Chi-Sing; Wong, Wing-Tak; CrystEngComm 15 (2013) 836–; doi:10.1039/c2ce26438b

data_7209019
_publ_section_title
;
 Stereolabile chiral biphenyl hybrids: crystallization-induced dynamic
 atropselective resolution involving supramolecular interactions
;
_journal_issue                   5
_journal_name_full               CrystEngComm
_journal_page_first              836
_journal_paper_doi               10.1039/c2ce26438b
_journal_volume                  15
_journal_year                    2013
_chemical_absolute_configuration syn
_chemical_formula_moiety         'C20 H22 O4'
_chemical_formula_sum            'C20 H22 O4'
_chemical_formula_weight         326.38
_space_group_IT_number           18
_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_Hall  'P 2 2ab'
_symmetry_space_group_name_H-M   'P 21 21 2'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_audit_update_record
;
2011-09-22 # Formatted by publCIF
;
_cell_angle_alpha                90.00
_cell_angle_beta                 90.00
_cell_angle_gamma                90.00
_cell_formula_units_Z            2
_cell_length_a                   9.4979(4)
_cell_length_b                   16.7194(6)
_cell_length_c                   5.6273(2)
_cell_measurement_reflns_used    3295
_cell_measurement_temperature    296(2)
_cell_measurement_theta_max      24.14
_cell_measurement_theta_min      2.44
_cell_volume                     893.61(6)
_computing_cell_refinement       'Bruker APEX II'
_computing_data_collection       'Bruker APEX II'
_computing_data_reduction        'Bruker SAINT'
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'Bruker SHELXTL'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      296(2)
_diffrn_measured_fraction_theta_full 0.996
_diffrn_measured_fraction_theta_max 0.996
_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  0.0305
_diffrn_reflns_av_sigmaI/netI    0.0245
_diffrn_reflns_limit_h_max       11
_diffrn_reflns_limit_h_min       -12
_diffrn_reflns_limit_k_max       21
_diffrn_reflns_limit_k_min       -20
_diffrn_reflns_limit_l_max       7
_diffrn_reflns_limit_l_min       -7
_diffrn_reflns_number            9507
_diffrn_reflns_theta_full        27.59
_diffrn_reflns_theta_max         27.59
_diffrn_reflns_theta_min         3.82
_exptl_absorpt_coefficient_mu    0.084
_exptl_absorpt_correction_T_max  0.7456
_exptl_absorpt_correction_T_min  0.6054
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SAINT ver. 7.34; Bruker SADABS'
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.213
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       Needle
_exptl_crystal_F_000             348
_exptl_crystal_size_max          0.42
_exptl_crystal_size_mid          0.36
_exptl_crystal_size_min          0.14
_refine_diff_density_max         0.172
_refine_diff_density_min         -0.129
_refine_diff_density_rms         0.026
_refine_ls_abs_structure_details 'Flack H D (1983), 816 Friedel pairs'
_refine_ls_extinction_coef       0.067(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   1.059
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     112
_refine_ls_number_reflns         1229
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.059
_refine_ls_R_factor_all          0.0426
_refine_ls_R_factor_gt           0.0336
_refine_ls_shift/su_max          0.000
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0460P)^2^+0.1071P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0879
_refine_ls_wR_factor_ref         0.0941
_reflns_number_gt                1691
_reflns_number_total             2045
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c2ce26438b.txt
_cod_data_source_block           bcyct04
_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 2.4.2 from 2011-04-26.

Automatic conversion script
Id: cif_fix_values 1891 2012-01-12 08:04:46Z andrius 
;
_cod_database_code               7209019