Switching from Separated to Contact Ion-Pair Binding Modes with Diastereomeric Calix[4]pyrrole Bis-phosphonate Receptors
Moira Ciardi; Francesca Tancini; Guzmán Gil-Ramírez; Eduardo C. Escudero Adán; Chiara Massera; Enrico Dalcanale; Pablo Ballester; Journal of the American Chemical Society 134 (2012) 13121–13132; doi:10.1021/ja305684m

data_4118486
_publ_section_title
;
 Switching from Separated to Contact Ion-Pair Binding Modes with
 Diastereomeric Calix[4]pyrrole Bis-phosphonate Receptors
;
_journal_name_full               'Journal of the American Chemical Society'
_journal_page_first              13121
_journal_page_last               13132
_journal_paper_doi               10.1021/ja305684m
_journal_volume                  134
_journal_year                    2012
_chemical_formula_sum            'C64 H56 N6 O6 P2'
_chemical_formula_weight         1067.09
_space_group_IT_number           19
_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_Hall  'P 2ac 2ab'
_symmetry_space_group_name_H-M   'P 21 21 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            4
_cell_length_a                   16.273(2)
_cell_length_b                   17.888(2)
_cell_length_c                   19.236(2)
_cell_measurement_reflns_used    12561
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      28.19
_cell_measurement_theta_min      1.55
_cell_volume                     5599.4(11)
_computing_cell_refinement       'APEX-II (2008)'
_computing_data_collection       'APEX-II (2008)'
_computing_data_reduction        'SAINT (2008)'
_computing_structure_refinement
'SHELXL-97 (G.M. Sheldrick, 2008, Acta Cryst. A64, 112-122)'
_computing_structure_solution    'SIR97 (Giacovazzo and co., 1999)'
_diffrn_ambient_temperature      293(2)
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.999
_diffrn_measurement_device_type  'Bruker APEX-II CCD area-detector'
_diffrn_measurement_method       omega-scan
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71069
_diffrn_reflns_av_R_equivalents  0.0949
_diffrn_reflns_av_sigmaI/netI    0.1327
_diffrn_reflns_limit_h_max       21
_diffrn_reflns_limit_h_min       -20
_diffrn_reflns_limit_k_max       17
_diffrn_reflns_limit_k_min       -23
_diffrn_reflns_limit_l_max       25
_diffrn_reflns_limit_l_min       -23
_diffrn_reflns_number            36839
_diffrn_reflns_theta_full        28.19
_diffrn_reflns_theta_max         28.19
_diffrn_reflns_theta_min         1.55
_diffrn_standards_decay_%        0
_diffrn_standards_interval_count 0
_diffrn_standards_interval_time  0
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.136
_exptl_absorpt_correction_T_max  0.7457
_exptl_absorpt_correction_T_min  0.5838
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'Bruker Apex-II SADABS'
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.266
_exptl_crystal_description       prismatic
_exptl_crystal_F_000             2240
_exptl_crystal_size_max          0.10
_exptl_crystal_size_mid          0.10
_exptl_crystal_size_min          0.08
_refine_diff_density_max         0.872
_refine_diff_density_min         -0.360
_refine_diff_density_rms         0.063
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   -0.23(16)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.993
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     681
_refine_ls_number_reflns         13752
_refine_ls_number_restraints     3
_refine_ls_restrained_S_all      0.992
_refine_ls_R_factor_all          0.1939
_refine_ls_R_factor_gt           0.0808
_refine_ls_shift/su_max          0.000
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.1121P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1945
_refine_ls_wR_factor_ref         0.2524
_reflns_number_gt                5696
_reflns_number_total             13752
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ja305684m_si_009.cif
_cod_data_source_block           shelxl
_cod_database_code               4118486