Self-assembly of neutral hexanuclear circular copper(II) meso-helicates: topological control by sulfate ions.
Tanh Jeazet, Harold B; Gloe, Kerstin; Doert, Thomas; Kataeva, Olga N; Jäger, Anne; Geipel, Gerhard; Bernhard, Gert; Büchner, Bernd; Gloe, Karsten; Chemical communications (Cambridge, England) 46 (2010) 2373–2375; doi:10.1039/b925469b

data_7105381
_publ_section_title
;
 Self-assembly of neutral hexanuclear circular copper(II)
 meso-helicates: topological control by sulfate ions.
;
_journal_issue                   14
_journal_name_full
'Chemical communications (Cambridge, England)'
_journal_page_first              2373
_journal_page_last               2375
_journal_paper_doi               10.1039/b925469b
_journal_volume                  46
_journal_year                    2010
_chemical_formula_moiety         'C144 H108 Cu6 N24 O30 S6 + 24 H2 O'
_chemical_formula_sum            'C144 H156 Cu6 N24 O54 S6'
_chemical_formula_weight         3660.53
_chemical_name_systematic
;
?
;
_space_group_IT_number           148
_symmetry_cell_setting           trigonal
_symmetry_space_group_name_Hall  '-R 3'
_symmetry_space_group_name_H-M   'R -3 :H'
_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                   23.4688(3)
_cell_length_b                   23.4688(3)
_cell_length_c                   25.3619(5)
_cell_measurement_reflns_used    9840
_cell_measurement_temperature    150(2)
_cell_measurement_theta_max      31.18
_cell_measurement_theta_min      2.41
_cell_volume                     12097.5(3)
_computing_cell_refinement       'APEX2 v2, 1-4 (Bruker AXS, 2005-2007)'
_computing_data_collection       'APEX2 v2, 1-4 (Bruker AXS, 2005-2007)'
_computing_data_reduction        'SAINT NT v6.0 (Bruker AXS, 2003)'
_computing_molecular_graphics    'ORTEP-3 for Windows (Farrugia, 1997)'
_computing_publication_material
'WinGX (Farrugia 1999), enCIFer (Allen et al. 2004)'
_computing_structure_refinement
'SHELXL-97 (Sheldrick, 1997), WinGX (Farrugia 1999), PLATON (Spek 2005)'
_computing_structure_solution    'SIR2004 (Burla et al., 2005)'
_diffrn_ambient_temperature      150(2)
_diffrn_measured_fraction_theta_full 0.996
_diffrn_measured_fraction_theta_max 0.996
_diffrn_measurement_device       'Bruker Kappa APEX II CCD'
_diffrn_measurement_device_type  'CCD area detector'
_diffrn_measurement_method       '0.5 deg frames in phi and omega'
_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  0.0523
_diffrn_reflns_av_sigmaI/netI    0.0437
_diffrn_reflns_limit_h_max       34
_diffrn_reflns_limit_h_min       -22
_diffrn_reflns_limit_k_max       24
_diffrn_reflns_limit_k_min       -34
_diffrn_reflns_limit_l_max       36
_diffrn_reflns_limit_l_min       -36
_diffrn_reflns_number            55153
_diffrn_reflns_theta_full        31.55
_diffrn_reflns_theta_max         31.55
_diffrn_reflns_theta_min         1.74
_exptl_absorpt_coefficient_mu    0.949
_exptl_absorpt_correction_T_max  0.8330
_exptl_absorpt_correction_T_min  0.6735
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
'SADABS version 2.10 (Sheldrick,Bruker AXS Inc.,2002)'
_exptl_crystal_colour            'dark green'
_exptl_crystal_density_diffrn    1.49
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       needle
_exptl_crystal_F_000             5670
_exptl_crystal_size_max          0.40
_exptl_crystal_size_mid          0.20
_exptl_crystal_size_min          0.20
_refine_diff_density_max         0.890
_refine_diff_density_min         -0.549
_refine_diff_density_rms         0.108
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.080
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     355
_refine_ls_number_reflns         8975
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.080
_refine_ls_R_factor_all          0.0726
_refine_ls_R_factor_gt           0.0479
_refine_ls_shift/su_max          0.002
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0887P)^2^+2.4209P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1428
_refine_ls_wR_factor_ref         0.1528
_reflns_number_gt                6296
_reflns_number_total             8975
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            b925469b.txt
_cod_data_source_block           shelxl_3
_cod_original_sg_symbol_H-M      R-3
_cod_database_code               7105381