A General and High Yielding Fragment Coupling Synthesis of Heteroatom-Bridged Calixarenes and the Unprecedented Examples of Calixarene Cavity Fine-Tuned by Bridging Heteroatoms
Wang, Mei-Xiang; Yang, Hai-Bo; Journal of the American Chemical Society 126 (2004) 15412–; doi:10.1021/ja0465092

data_4122240
_publ_section_title
;
 A General and High Yielding Fragment Coupling Synthesis of
 Heteroatom-Bridged Calixarenes and the Unprecedented Examples of
 Calixarene Cavity Fine-Tuned by Bridging Heteroatoms
;
_journal_issue                   47
_journal_name_full               'Journal of the American Chemical Society'
_journal_page_first              15412
_journal_paper_doi               10.1021/ja0465092
_journal_volume                  126
_journal_year                    2004
_chemical_formula_sum            'C20 H18 Cl2 N9 O2.5'
_chemical_formula_weight         495.33
_chemical_name_systematic
; 

 ? 

;
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-P 2ybc'
_symmetry_space_group_name_H-M   'P 1 21/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                 104.276(4)
_cell_angle_gamma                90.00
_cell_formula_units_Z            8
_cell_length_a                   18.4440(10)
_cell_length_b                   18.7666(14)
_cell_length_c                   13.6773(16)
_cell_measurement_temperature    293(2)
_cell_volume                     4587.9(7)
_computing_cell_refinement       'RAPID AUTO (RIGAKU, 2001)'
_computing_data_collection       'RAPID AUTO (RIGAKU, 2001)'
_computing_data_reduction        'RAPID AUTO (RIGAKU, 2001)'
_computing_molecular_graphics    'SHELXTL (SIEMENS, 1994)'
_computing_publication_material  'SHELXTL (SIEMENS, 1994)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      293(2)
_diffrn_measured_fraction_theta_full 0.935
_diffrn_measured_fraction_theta_max 0.935
_diffrn_measurement_device_type  'RIGAKU R-AXIS RAPID IP'
_diffrn_measurement_method       OSCILLATION
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'ROTATING ANODE'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.1150
_diffrn_reflns_av_sigmaI/netI    0.5025
_diffrn_reflns_limit_h_max       23
_diffrn_reflns_limit_h_min       -23
_diffrn_reflns_limit_k_max       24
_diffrn_reflns_limit_k_min       -24
_diffrn_reflns_limit_l_max       17
_diffrn_reflns_limit_l_min       -17
_diffrn_reflns_number            17071
_diffrn_reflns_theta_full        27.48
_diffrn_reflns_theta_max         27.48
_diffrn_reflns_theta_min         1.14
_exptl_absorpt_coefficient_mu    0.323
_exptl_absorpt_correction_T_max  0.9818
_exptl_absorpt_correction_T_min  0.9450
_exptl_absorpt_correction_type   empirical
_exptl_absorpt_process_details   'PSI SCAN'
_exptl_crystal_density_diffrn    1.434
_exptl_crystal_density_method    'not measured'
_exptl_crystal_F_000             2040
_exptl_crystal_size_max          0.18
_exptl_crystal_size_mid          0.15
_exptl_crystal_size_min          0.06
_refine_diff_density_max         0.770
_refine_diff_density_min         -0.392
_refine_diff_density_rms         0.060
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.601
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     589
_refine_ls_number_reflns         9822
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      0.601
_refine_ls_R_factor_all          0.2293
_refine_ls_R_factor_gt           0.0543
_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^)+(0.0099P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0676
_refine_ls_wR_factor_ref         0.0868
_reflns_number_gt                2223
_reflns_number_total             9822
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ja0465092si20040613_051157.cif
_cod_data_source_block           357
_cod_depositor_comments
;
The following automatic conversions were performed:
'_atom_site_symetry_multiplicity' tag replaced with
'_atom_site_symmetry_multiplicity'.

Automatic conversion script
Id: cif_correct_tags 1440 2010-10-19 06:21:57Z saulius 

The following automatic conversions were performed:

'_exptl_absorpt_correction_type' value 'EMPIRICAL' changed to
'empirical' according to
/home/saulius/struct/CIF-dictionaries/cif_core.dic dictionary named
'cif_core.dic' version 2.4.2 from 2011-04-26.

Automatic conversion script
Id: cif_fix_values 2281 2013-09-26 08:29:07Z andrius 
;
_cod_original_sg_symbol_H-M      P2(1)/C
_cod_database_code               4122240