Synthesis and anion coordination chemistry of new calix[4]arene pyridinium receptors
Beer, Paul D.; Drew, Michael G. B.; Gradwell, Kate; Journal of the Chemical Society, Perkin Transactions 2  (2000) 511–; doi:10.1039/a908106b

data_7213200
_publ_section_title
;
 Synthesis and anion coordination chemistry of new calix[4]arene
 pyridinium receptors
;
_journal_issue                   3
_journal_name_full
'Journal of the Chemical Society, Perkin Transactions 2'
_journal_page_first              511
_journal_paper_doi               10.1039/a908106b
_journal_year                    2000
_chemical_formula_sum            'C60 H80 N4 O6'
_chemical_formula_weight         953.28
_chemical_name_systematic
; 

 ? 

;
_space_group_IT_number           15
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-I 2yc'
_symmetry_space_group_name_H-M   'I 1 2/c 1'
_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                 94.583(10)
_cell_angle_gamma                90.00
_cell_formula_units_Z            8
_cell_length_a                   22.32(2)
_cell_length_b                   21.09(2)
_cell_length_c                   22.89(2)
_cell_measurement_reflns_used    all
_cell_measurement_temperature    293(2)
_cell_volume                     10741(17)
_computing_cell_refinement       XDS
_computing_data_collection       'XDS (Kabsch, 1991)'
_computing_data_reduction        XDS
_computing_molecular_graphics    PLATON(Spek,1994)
_computing_structure_refinement  'SHELXL-93 (Sheldrick, 1993)'
_computing_structure_solution    'SHELXS-86 (Sheldrick, 1990)'
_diffrn_ambient_temperature      293(2)
_diffrn_measurement_device       'Marresearch Image Plate'
_diffrn_measurement_method
'95 frames at 2^o intervals, counting time 2 min.'
_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  0.0529
_diffrn_reflns_av_sigmaI/netI    0.0914
_diffrn_reflns_limit_h_max       26
_diffrn_reflns_limit_h_min       0
_diffrn_reflns_limit_k_max       22
_diffrn_reflns_limit_k_min       -22
_diffrn_reflns_limit_l_max       26
_diffrn_reflns_limit_l_min       -27
_diffrn_reflns_number            16974
_diffrn_reflns_theta_max         25.05
_diffrn_reflns_theta_min         2.28
_diffrn_standards_number         all
_exptl_absorpt_coefficient_mu    0.075
_exptl_absorpt_correction_type   none
_exptl_crystal_density_diffrn    1.179
_exptl_crystal_density_method    'not measured'
_exptl_crystal_F_000             4128
_exptl_crystal_size_max          0.25
_exptl_crystal_size_mid          0.25
_exptl_crystal_size_min          0.25
_refine_diff_density_max         0.351
_refine_diff_density_min         -0.205
_refine_diff_density_rms         0.041
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.152
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     645
_refine_ls_number_reflns         8873
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.152
_refine_ls_R_factor_all          0.1851
_refine_ls_R_factor_gt           0.0973
_refine_ls_shift/su_max          0.000
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.1052P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1999
_refine_ls_wR_factor_ref         0.2382
_reflns_number_gt                5114
_reflns_number_total             8873
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            a908106bsup1.cif
_cod_data_source_block           1
_cod_depositor_comments
;
The following automatic conversions were performed:

'_refine_ls_weighting_scheme' value 'calc
w=1/[\s^2^(Fo^2^)+(0.1052P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3' was
changed to 'calc'. New tag '_refine_ls_weighting_details' was
created. The value of the new tag was set to
'w=1/[\s^2^(Fo^2^)+(0.1052P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'.

Automatic conversion script
Id: cif_fix_values 3143 2015-03-26 13:38:13Z robertas 
;
_cod_original_cell_volume        10744(20)
_cod_original_sg_symbol_H-M      I2/c
_cod_database_code               7213200