Chiral channel-like cavity which is tunable via changes in 21-column packing structure
Imai, Yoshitane; Kawaguchi, Kakuhiro; Asai, Katuzo; Sato, Tomohiro; Kuroda, Reiko; Matsubara, Yoshio; CrystEngComm 9 (2007) 467–; doi:10.1039/b705641a

data_7202918
_publ_section_title
;
 Chiral channel-like cavity which is tunable via changes in 21-column
 packing structure
;
_journal_issue                   6
_journal_name_full               CrystEngComm
_journal_page_first              467
_journal_paper_doi               10.1039/b705641a
_journal_volume                  9
_journal_year                    2007
_chemical_formula_sum            'C32 H38 N2 O3'
_chemical_formula_weight         498.64
_space_group_IT_number           4
_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                 105.388(2)
_cell_angle_gamma                90.00
_cell_formula_units_Z            2
_cell_length_a                   12.2472(13)
_cell_length_b                   5.6733(6)
_cell_length_c                   20.771(2)
_cell_measurement_temperature    293(2)
_cell_volume                     1391.5(2)
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_diffrn_ambient_temperature      293(2)
_diffrn_measured_fraction_theta_full 0.941
_diffrn_measured_fraction_theta_max 0.941
_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  0.0254
_diffrn_reflns_av_sigmaI/netI    0.0600
_diffrn_reflns_limit_h_max       13
_diffrn_reflns_limit_h_min       -16
_diffrn_reflns_limit_k_max       7
_diffrn_reflns_limit_k_min       -7
_diffrn_reflns_limit_l_max       26
_diffrn_reflns_limit_l_min       -20
_diffrn_reflns_number            8391
_diffrn_reflns_theta_full        27.87
_diffrn_reflns_theta_max         27.87
_diffrn_reflns_theta_min         1.72
_exptl_absorpt_coefficient_mu    0.076
_exptl_absorpt_correction_T_max  0.9924
_exptl_absorpt_correction_T_min  0.9630
_exptl_crystal_density_diffrn    1.190
_exptl_crystal_density_method    'not measured'
_exptl_crystal_F_000             536
_exptl_crystal_size_max          0.50
_exptl_crystal_size_mid          0.10
_exptl_crystal_size_min          0.10
_refine_diff_density_max         0.240
_refine_diff_density_min         -0.197
_refine_diff_density_rms         0.047
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   -0.2(13)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.036
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     345
_refine_ls_number_reflns         5692
_refine_ls_number_restraints     1
_refine_ls_restrained_S_all      1.035
_refine_ls_R_factor_all          0.0649
_refine_ls_R_factor_gt           0.0547
_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^)+(0.0452P)^2^+0.4095P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1117
_refine_ls_wR_factor_ref         0.1170
_reflns_number_gt                4970
_reflns_number_total             5692
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            b705641a.txt
_cod_data_source_block           imai69_5
_cod_original_cell_volume        1391.5(3)
_cod_database_code               7202918