Zwitterionic [2]rotaxanes utilising anionic transition metal stoppers
Davidson, Gregory J. E.; Loeb, Stephen J.; Parekh, Neal A.; Wisner, James A.; Journal of the Chemical Society, Dalton Transactions  (2001) 3135–; doi:10.1039/b107257a

data_7011074
_publ_section_title
;
 Zwitterionic [2]rotaxanes utilising anionic transition metal stoppers
;
_journal_issue                   21
_journal_name_full
'Journal of the Chemical Society, Dalton Transactions'
_journal_page_first              3135
_journal_paper_doi               10.1039/b107257a
_journal_year                    2001
_chemical_formula_sum            'C46 H52 Br6 Co2 N4 O8'
_chemical_formula_weight         1386.24
_space_group_IT_number           61
_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_Hall  '-P 2ac 2ab'
_symmetry_space_group_name_H-M   'P b c a'
_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                   17.7244(2)
_cell_length_b                   14.7931(3)
_cell_length_c                   20.5958(3)
_cell_measurement_reflns_used    'reflections from 120 data frames'
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      28.3
_cell_measurement_theta_min      1.5
_cell_volume                     5400.19(15)
_computing_cell_refinement       'Siemens SAINT'
_computing_data_collection       'Siemens SMART'
_computing_data_reduction        'Siemens SHELXTL XPREP'
_computing_molecular_graphics    'Siemens SHELXTL XP'
_computing_publication_material  'Siemens SHELXTL XCIF'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      293(2)
_diffrn_measured_fraction_theta_full 0.846
_diffrn_measured_fraction_theta_max 0.846
_diffrn_measurement_device_type  'Siemens SMART CCD'
_diffrn_measurement_method       'hemisphere 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  0.1005
_diffrn_reflns_av_sigmaI/netI    0.0785
_diffrn_reflns_limit_h_max       20
_diffrn_reflns_limit_h_min       -17
_diffrn_reflns_limit_k_max       17
_diffrn_reflns_limit_k_min       -16
_diffrn_reflns_limit_l_max       24
_diffrn_reflns_limit_l_min       -23
_diffrn_reflns_number            18217
_diffrn_reflns_theta_full        25.00
_diffrn_reflns_theta_max         25.00
_diffrn_reflns_theta_min         1.98
_diffrn_standards_decay_%        <1
_diffrn_standards_number         '50 standard frames at start and end'
_exptl_absorpt_coefficient_mu    5.105
_exptl_absorpt_correction_T_max  0.0886
_exptl_absorpt_correction_T_min  0.0533
_exptl_absorpt_correction_type   empirical
_exptl_crystal_colour            'emerald green'
_exptl_crystal_density_diffrn    1.705
_exptl_crystal_density_meas      ?
_exptl_crystal_density_method    .
_exptl_crystal_description       prism
_exptl_crystal_F_000             2736
_exptl_crystal_size_max          0.28
_exptl_crystal_size_mid          0.20
_exptl_crystal_size_min          0.16
_refine_diff_density_max         0.975
_refine_diff_density_min         -1.243
_refine_diff_density_rms         0.192
_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     296
_refine_ls_number_reflns         4027
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.087
_refine_ls_R_factor_all          0.1852
_refine_ls_R_factor_gt           0.1198
_refine_ls_shift/su_max          0.031
_refine_ls_shift/su_mean         0.006
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.2000P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.3007
_refine_ls_wR_factor_ref         0.3532
_reflns_number_gt                1857
_reflns_number_total             4027
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            b107257a.txt
_cod_data_source_block           CoBr3_stoppered_[2]rotaxane
_cod_original_cell_volume        5400.2(2)
_cod_original_sg_symbol_H-M      Pbca
_cod_database_code               7011074