Branched [n]rotaxanes (n = 2-4) from multiple dibenzo-24-crown-8 ether wheels and 1,2-bis(4,4'-dipyridinium)ethane axles.
Loeb, Stephen J.; Tramontozzi, David A.; Organic & biomolecular chemistry 3 (2005) 1393–1401; doi:10.1039/b418772e

data_7150128
_publ_section_title
;
 Branched [n]rotaxanes (n = 2-4) from multiple dibenzo-24-crown-8 ether
 wheels and 1,2-bis(4,4'-dipyridinium)ethane axles.
;
_journal_issue                   8
_journal_name_full               'Organic &amp; biomolecular chemistry'
_journal_page_first              1393
_journal_page_last               1401
_journal_paper_doi               10.1039/b418772e
_journal_volume                  3
_journal_year                    2005
_chemical_formula_sum            'C31 H38 O9'
_chemical_formula_weight         554.61
_space_group_IT_number           1
_symmetry_cell_setting           triclinic
_symmetry_space_group_name_Hall  'P 1'
_symmetry_space_group_name_H-M   'P 1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                92.857(3)
_cell_angle_beta                 96.328(3)
_cell_angle_gamma                113.673(3)
_cell_formula_units_Z            1
_cell_length_a                   8.5216(13)
_cell_length_b                   8.6643(13)
_cell_length_c                   10.4987(16)
_cell_measurement_temperature    296(2)
_cell_volume                     701.82(19)
_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      296(2)
_diffrn_measured_fraction_theta_full 0.983
_diffrn_measured_fraction_theta_max 0.983
_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  0.0222
_diffrn_reflns_av_sigmaI/netI    0.0374
_diffrn_reflns_limit_h_max       9
_diffrn_reflns_limit_h_min       -7
_diffrn_reflns_limit_k_max       9
_diffrn_reflns_limit_k_min       -9
_diffrn_reflns_limit_l_max       11
_diffrn_reflns_limit_l_min       -11
_diffrn_reflns_number            3131
_diffrn_reflns_theta_full        23.26
_diffrn_reflns_theta_max         23.26
_diffrn_reflns_theta_min         1.96
_exptl_absorpt_coefficient_mu    0.096
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.312
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             296
_exptl_crystal_size_max          0.28
_exptl_crystal_size_mid          0.28
_exptl_crystal_size_min          0.20
_refine_diff_density_max         0.419
_refine_diff_density_min         -0.228
_refine_diff_density_rms         0.060
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   -1(4)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.146
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     361
_refine_ls_number_reflns         2474
_refine_ls_number_restraints     15
_refine_ls_restrained_S_all      1.150
_refine_ls_R_factor_all          0.1038
_refine_ls_R_factor_gt           0.0965
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.1106P)^2^+0.7500P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.2346
_refine_ls_wR_factor_ref         0.2429
_reflns_number_gt                2248
_reflns_number_total             2474
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            b418772e.txt
_cod_data_source_block           3-Phenoxymethyl-dibenzo-24-crown-8ether
_cod_depositor_comments
;
The following automatic conversions were performed:
'_symmetry_cell_setting' value 'Triclinic' changed to 'triclinic'
according to '/home/saulius/struct/CIF-dictionaries/cif_core.dic'
dictionary named 'cif_core.dic' version 2.4.1 from 2010-06-29.

Automatic conversion script
Id: cif_fix_enum 1527 2010-12-29 10:47:43Z saulius 
;
_cod_original_cell_volume        701.82(18)
_cod_original_sg_symbol_H-M      P1
_cod_database_code               7150128