Spontaneous resolution of silver double helicates consisting of achiral ligands with several aromatic rings
Sun, Qiaozhen; Bai, Yan; He, Guangjie; Duan, Chunying; Lin, Zhihua; Meng, Qingjin; Chemical Communications (Cambridge, United Kingdom)  (2006) 2777–2779; doi:10.1039/b604066g

data_7101245
_publ_section_title
;
 Spontaneous resolution of silver double helicates consisting of achiral
 ligands with several aromatic rings
;
_journal_coden_ASTM              CHCOFS
_journal_issue                   26
_journal_name_full
;
 Chemical Communications (Cambridge, United Kingdom)
;
_journal_page_first              2777
_journal_page_last               2779
_journal_paper_doi               10.1039/b604066g
_journal_year                    2006
_chemical_formula_sum            'C52 H40 Ag2 Cl1.67 N12.33 O7.67'
_chemical_formula_weight         1235.12
_space_group_IT_number           152
_symmetry_cell_setting           trigonal
_symmetry_space_group_name_Hall  'P 31 2"'
_symmetry_space_group_name_H-M   'P 31 2 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                 90.00
_cell_angle_gamma                120.00
_cell_formula_units_Z            3
_cell_length_a                   15.2573(9)
_cell_length_b                   15.2573(9)
_cell_length_c                   21.4188(18)
_cell_measurement_reflns_used    1358
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      13.89
_cell_measurement_theta_min      2.45
_cell_volume                     4318.0(5)
_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  'Bruker SHELXTL'
_computing_structure_solution    'Bruker SHELXTL'
_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_source         'fine-focus sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.1060
_diffrn_reflns_av_sigmaI/netI    0.1553
_diffrn_reflns_limit_h_max       18
_diffrn_reflns_limit_h_min       -16
_diffrn_reflns_limit_k_max       18
_diffrn_reflns_limit_k_min       -15
_diffrn_reflns_limit_l_max       25
_diffrn_reflns_limit_l_min       -25
_diffrn_reflns_number            21618
_diffrn_reflns_theta_full        25.00
_diffrn_reflns_theta_max         25.00
_diffrn_reflns_theta_min         1.81
_exptl_absorpt_coefficient_mu    0.817
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            pale-yellow
_exptl_crystal_density_diffrn    1.425
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             1866
_exptl_crystal_size_max          0.2
_exptl_crystal_size_mid          0.18
_exptl_crystal_size_min          0.15
_refine_diff_density_max         0.660
_refine_diff_density_min         -0.368
_refine_diff_density_rms         0.067
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   0.03(5)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.041
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     347
_refine_ls_number_reflns         5058
_refine_ls_number_restraints     88
_refine_ls_restrained_S_all      1.092
_refine_ls_R_factor_all          0.1639
_refine_ls_R_factor_gt           0.0608
_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^)+(0.0200P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1065
_refine_ls_wR_factor_ref         0.1187
_reflns_number_gt                2043
_reflns_number_total             5058
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            b604066g.txt
_cod_depositor_comments
;
The following automatic conversions were performed:
'_symmetry_cell_setting' value 'Trigonal' changed to 'trigonal' 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      P3(1)21
_cod_database_code               7101245