A triple-stranded helicate and mesocate from the same metal and ligand.
Zhang, Zhan; Dolphin, David; Chemical communications (Cambridge, England)  (2009) 6931–6933; doi:10.1039/b913231g

data_7105040
_publ_section_title
;
 A triple-stranded helicate and mesocate from the same metal and
 ligand.
;
_journal_issue                   45
_journal_name_full               'Chemical communications (Cambridge, England)'
_journal_page_first              6931
_journal_page_last               6933
_journal_paper_doi               10.1039/b913231g
_journal_year                    2009
_chemical_formula_sum            'C81 H90 Co2 N12'
_chemical_formula_weight         1349.51
_space_group_IT_number           176
_symmetry_cell_setting           trigonal
_symmetry_space_group_name_Hall  '-P 6c'
_symmetry_space_group_name_H-M   'P 63/m'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_audit_update_record
;
2009-07-23 # Formatted by publCIF
;
_cell_angle_alpha                90.00
_cell_angle_beta                 90.00
_cell_angle_gamma                120.00
_cell_formula_units_Z            2
_cell_length_a                   15.0431(8)
_cell_length_b                   15.0431(8)
_cell_length_c                   24.400(2)
_cell_measurement_reflns_used    9930
_cell_measurement_temperature    173.0(1)
_cell_measurement_theta_max      27.64
_cell_measurement_theta_min      2.27
_cell_volume                     4781.8(6)
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_diffrn_ambient_temperature      173.0(1)
_diffrn_measured_fraction_theta_full 1.000
_diffrn_measured_fraction_theta_max 1.000
_diffrn_measurement_device_type  'Bruker X8 APEX II'
_diffrn_measurement_method       'area detector'
_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  0.0315
_diffrn_reflns_av_sigmaI/netI    0.0190
_diffrn_reflns_limit_h_max       19
_diffrn_reflns_limit_h_min       -19
_diffrn_reflns_limit_k_max       14
_diffrn_reflns_limit_k_min       -19
_diffrn_reflns_limit_l_max       32
_diffrn_reflns_limit_l_min       -31
_diffrn_reflns_number            45184
_diffrn_reflns_theta_full        27.80
_diffrn_reflns_theta_max         27.80
_diffrn_reflns_theta_min         1.56
_exptl_absorpt_coefficient_mu    0.387
_exptl_absorpt_correction_T_max  0.955
_exptl_absorpt_correction_T_min  0.864
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SADABS (Bruker, 2007)'
_exptl_crystal_colour            red
_exptl_crystal_density_diffrn    0.937
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       prism
_exptl_crystal_F_000             1428
_exptl_crystal_size_max          0.54
_exptl_crystal_size_mid          0.27
_exptl_crystal_size_min          0.12
_refine_diff_density_max         0.319
_refine_diff_density_min         -0.234
_refine_diff_density_rms         0.042
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.087
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     158
_refine_ls_number_reflns         3875
_refine_ls_number_restraints     1
_refine_ls_restrained_S_all      1.094
_refine_ls_R_factor_all          0.0408
_refine_ls_R_factor_gt           0.0332
_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^)+(0.0499P)^2^+0.7354P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0880
_refine_ls_wR_factor_ref         0.0906
_reflns_number_gt                3252
_reflns_number_total             3875
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            b913231g.txt
_cod_data_source_block           CoMeso
_cod_original_sg_symbol_H-M      P63/m
_cod_database_code               7105040