Squaramide-based tripodal receptors for selective recognition of sulfate anion.
Jin, Can; Zhang, Man; Wu, Lin; Guan, Yangfan; Pan, Yi; Jiang, Juli; Lin, Chen; Wang, Leyong; Chemical communications (Cambridge, England) 49 (2013) 2025–2027; doi:10.1039/c3cc00196b

data_7112378
_publ_section_title
;
 Squaramide-based tripodal receptors for selective recognition of sulfate
 anion.
;
_journal_issue                   20
_journal_name_full
'Chemical communications (Cambridge, England)'
_journal_page_first              2025
_journal_page_last               2027
_journal_paper_doi               10.1039/c3cc00196b
_journal_volume                  49
_journal_year                    2013
_chemical_formula_sum            'C68 H105 N9 O10 S'
_chemical_formula_weight         1240.67
_chemical_name_systematic
;
?
;
_space_group_IT_number           2
_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                94.8590(10)
_cell_angle_beta                 96.631(2)
_cell_angle_gamma                94.2570(10)
_cell_formula_units_Z            2
_cell_length_a                   12.9919(11)
_cell_length_b                   14.4679(12)
_cell_length_c                   19.3290(13)
_cell_measurement_temperature    291(2)
_cell_volume                     3582.9(5)
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      291(2)
_diffrn_measured_fraction_theta_full 0.990
_diffrn_measured_fraction_theta_max 0.990
_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  0.0245
_diffrn_reflns_av_sigmaI/netI    0.0543
_diffrn_reflns_limit_h_max       14
_diffrn_reflns_limit_h_min       -15
_diffrn_reflns_limit_k_max       17
_diffrn_reflns_limit_k_min       -17
_diffrn_reflns_limit_l_max       22
_diffrn_reflns_limit_l_min       -19
_diffrn_reflns_number            25218
_diffrn_reflns_theta_full        24.71
_diffrn_reflns_theta_max         24.71
_diffrn_reflns_theta_min         1.07
_exptl_absorpt_coefficient_mu    0.105
_exptl_absorpt_correction_T_max  0.9793
_exptl_absorpt_correction_T_min  0.9732
_exptl_crystal_density_diffrn    1.150
_exptl_crystal_density_method    'not measured'
_exptl_crystal_F_000             1344
_exptl_crystal_size_max          0.26
_exptl_crystal_size_mid          0.22
_exptl_crystal_size_min          0.20
_refine_diff_density_max         0.343
_refine_diff_density_min         -0.314
_refine_diff_density_rms         0.026
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.075
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     847
_refine_ls_number_reflns         12092
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.075
_refine_ls_R_factor_all          0.0743
_refine_ls_R_factor_gt           0.0456
_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^)+(0.0400P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0991
_refine_ls_wR_factor_ref         0.1032
_reflns_number_gt                7282
_reflns_number_total             12092
_reflns_threshold_expression     >2sigma(I)
_cod_duplicate_entry             7108906
_cod_data_source_file            c3cc00196b.txt
_cod_data_source_block           120520a_0m
_cod_database_code               7112378