Proton-controlled inter-conversion between an achiral discrete molecular square and a chiral interpenetrated double-chain architecture
Du, Miao; Bu, Xian-He; Guo, Ya-Mei; Ribas, Joan; Diaz, Carmen; Chemical Communications  (2002) 2550–; doi:10.1039/b207294g

data_7111251
_publ_section_title
;
 Proton-controlled inter-conversion between an achiral discrete molecular
 square and a chiral interpenetrated double-chain architecture
;
_journal_issue                   21
_journal_name_full               'Chemical Communications'
_journal_page_first              2550
_journal_paper_doi               10.1039/b207294g
_journal_year                    2002
_chemical_formula_sum            'C24 H44 Cl4 Cu3 N4 O18'
_chemical_formula_weight         1009.05
_chemical_name_systematic
; 
? 
;
_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                   10.1565(9)
_cell_length_b                   13.7346(13)
_cell_length_c                   27.005(3)
_cell_measurement_reflns_used    15448
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      25.03
_cell_measurement_theta_min      1.66
_cell_volume                     3767.1(6)
_computing_cell_refinement       'Bruker SMART'
_computing_data_collection       'Bruker SMART'
_computing_data_reduction        'Bruker SHELXTL'
_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      293(2)
_diffrn_measured_fraction_theta_full 0.982
_diffrn_measured_fraction_theta_max 0.982
_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  0.0472
_diffrn_reflns_av_sigmaI/netI    0.0651
_diffrn_reflns_limit_h_max       12
_diffrn_reflns_limit_h_min       -9
_diffrn_reflns_limit_k_max       16
_diffrn_reflns_limit_k_min       -16
_diffrn_reflns_limit_l_max       23
_diffrn_reflns_limit_l_min       -32
_diffrn_reflns_number            15492
_diffrn_reflns_theta_full        25.03
_diffrn_reflns_theta_max         25.03
_diffrn_reflns_theta_min         1.66
_exptl_absorpt_coefficient_mu    2.041
_exptl_absorpt_correction_T_max  0.6857
_exptl_absorpt_correction_T_min  0.6294
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   SADABS
_exptl_crystal_colour            'light blue'
_exptl_crystal_density_diffrn    1.779
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             2060
_exptl_crystal_size_max          0.25
_exptl_crystal_size_mid          0.20
_exptl_crystal_size_min          0.20
_refine_diff_density_max         1.114
_refine_diff_density_min         -1.143
_refine_diff_density_rms         0.132
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   0.02(3)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.030
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     478
_refine_ls_number_reflns         6553
_refine_ls_number_restraints     20
_refine_ls_restrained_S_all      1.035
_refine_ls_R_factor_all          0.0943
_refine_ls_R_factor_gt           0.0597
_refine_ls_shift/su_max          0.032
_refine_ls_shift/su_mean         0.011
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.1000P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1518
_refine_ls_wR_factor_ref         0.1709
_reflns_number_gt                4489
_reflns_number_total             6553
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            b207294gsup1.cif
_cod_data_source_block           2
_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.

'_exptl_absorpt_correction_type' value 'MULTI-SCAN'
changed to 'multi-scan' 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_original_sg_symbol_H-M      P2(1)2(1)2(1)
_cod_database_code               7111251