The Generality of Architectural Isomerism in Designer Inclusion Frameworks
K. Travis Holman; Stephen M. Martin; Daniel P. Parker; Michael D. Ward; Journal of the American Chemical Society 123 (2001) 4421–4431; doi:10.1021/ja0030257

data_4115515
_publ_section_title
;
 The Generality of Architectural Isomerism in Designer Inclusion
 Frameworks
;
_journal_name_full               'Journal of the American Chemical Society'
_journal_page_first              4421
_journal_page_last               4431
_journal_paper_doi               10.1021/ja0030257
_journal_volume                  123
_journal_year                    2001
_chemical_formula_sum            'C10 H28 N6 O6 S2'
_chemical_formula_weight         392.50
_chemical_name_common            'bis(guanidinium) 1,8-octanedisulfonate'
_space_group_IT_number           33
_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_Hall  'P 2c -2n'
_symmetry_space_group_name_H-M   'P n a 21'
_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            12
_cell_length_a                   12.6576(12)
_cell_length_b                   42.116(4)
_cell_length_c                   11.5962(11)
_cell_measurement_reflns_used    7451
_cell_measurement_temperature    173(2)
_cell_measurement_theta_max      52.5
_cell_measurement_theta_min      4.6
_cell_volume                     6181.8(10)
_computing_cell_refinement       'SAINT, Bruker'
_computing_data_collection       'SMART, Bruker (or Siemens)'
_computing_data_reduction        'SAINT, Bruker'
_computing_molecular_graphics
'XSEED, L. Barbour (1999); http://www.lbarbour.com/xseed'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      173(2)
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.999
_diffrn_measurement_device_type  'SMART platform CCD, Bruker (or Siemens)'
_diffrn_measurement_method       '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  0.0544
_diffrn_reflns_av_sigmaI/netI    0.0513
_diffrn_reflns_limit_h_max       15
_diffrn_reflns_limit_h_min       -11
_diffrn_reflns_limit_k_max       50
_diffrn_reflns_limit_k_min       -48
_diffrn_reflns_limit_l_max       13
_diffrn_reflns_limit_l_min       -13
_diffrn_reflns_number            32114
_diffrn_reflns_theta_full        25.00
_diffrn_reflns_theta_max         25.00
_diffrn_reflns_theta_min         0.97
_exptl_absorpt_coefficient_mu    0.293
_exptl_absorpt_correction_T_max  0.9685
_exptl_absorpt_correction_T_min  0.8674
_exptl_absorpt_correction_type   'simulated psi-scans '
_exptl_absorpt_process_details   'SADABS, G. Sheldrick (1999)'
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.265
_exptl_crystal_description       platecolorless
_exptl_crystal_F_000             2520
_exptl_crystal_size_max          0.50
_exptl_crystal_size_mid          0.48
_exptl_crystal_size_min          0.11
_refine_diff_density_max         0.244
_refine_diff_density_min         -0.299
_refine_diff_density_rms         0.054
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   0.51(16)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.018
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     649
_refine_ls_number_reflns         10797
_refine_ls_number_restraints     1
_refine_ls_restrained_S_all      1.018
_refine_ls_R_factor_all          0.0947
_refine_ls_R_factor_gt           0.0541
_refine_ls_shift/su_max          0.051
_refine_ls_shift/su_mean         0.009
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0715P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1310
_refine_ls_wR_factor_ref         0.1455
_reflns_number_gt                6912
_reflns_number_total             10797
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ja0030257_17.cif
_cod_data_source_block           d:\steve\00227\00227
_cod_database_code               4115515