Reversible Interconversion of Homochiral Triangular Macrocycles and Helical Coordination Polymers
Jungseok Heo; You-Moon Jeon; Chad A. Mirkin; Journal of the American Chemical Society 129 (2007) 7712–7713; doi:10.1021/ja0716812

data_4109573
_publ_section_title
;
 Reversible Interconversion of Homochiral Triangular Macrocycles and
 Helical Coordination Polymers
;
_journal_name_full               'Journal of the American Chemical Society'
_journal_page_first              7712
_journal_page_last               7713
_journal_paper_doi               10.1021/ja0716812
_journal_volume                  129
_journal_year                    2007
_chemical_formula_sum            'C76 H61.33 Cu2 N10 O6.67'
_chemical_formula_weight         1348.43
_chemical_name_systematic
; 
 ? 
;
_space_group_IT_number           146
_symmetry_cell_setting           rhombohedral
_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            9
_cell_length_a                   27.7575(15)
_cell_length_b                   27.7575(15)
_cell_length_c                   24.198(3)
_cell_measurement_temperature    153(2)
_cell_volume                     16146(2)
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      153(2)
_diffrn_measured_fraction_theta_full 0.942
_diffrn_measured_fraction_theta_max 0.942
_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  0.1157
_diffrn_reflns_av_sigmaI/netI    0.1728
_diffrn_reflns_limit_h_max       36
_diffrn_reflns_limit_h_min       -37
_diffrn_reflns_limit_k_max       37
_diffrn_reflns_limit_k_min       -35
_diffrn_reflns_limit_l_max       31
_diffrn_reflns_limit_l_min       -32
_diffrn_reflns_number            50353
_diffrn_reflns_theta_full        28.91
_diffrn_reflns_theta_max         28.91
_diffrn_reflns_theta_min         1.19
_exptl_absorpt_coefficient_mu    0.651
_exptl_crystal_density_diffrn    1.248
_exptl_crystal_F_000             6288
_refine_diff_density_max         0.913
_refine_diff_density_min         -0.489
_refine_diff_density_rms         0.145
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   0.017(18)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.026
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     828
_refine_ls_number_reflns         17180
_refine_ls_number_restraints     7
_refine_ls_restrained_S_all      1.028
_refine_ls_R_factor_all          0.1768
_refine_ls_R_factor_gt           0.0792
_refine_ls_shift/su_max          0.006
_refine_ls_shift/su_mean         0.001
_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          0.1973
_refine_ls_wR_factor_ref         0.2259
_reflns_number_gt                7840
_reflns_number_total             17180
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ja0716812si20070309_034908.cif
_cod_data_source_block           sss2
_cod_original_sg_symbol_H-M      'R 3'
_cod_database_code               4109573