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_4122235
_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            'C18 H11 Cl2 N7 O3.5'
_chemical_formula_weight         452.24
_chemical_name_systematic
; 

 ? 

;
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-P 2yn'
_symmetry_space_group_name_H-M   'P 1 21/n 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                 99.06(3)
_cell_angle_gamma                90.00
_cell_formula_units_Z            8
_cell_length_a                   12.508(3)
_cell_length_b                   24.589(5)
_cell_length_c                   13.770(3)
_cell_measurement_temperature    293(2)
_cell_volume                     4182.3(16)
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      293(2)
_diffrn_measured_fraction_theta_full 0.816
_diffrn_measured_fraction_theta_max 0.816
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'rotating anode'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.1926
_diffrn_reflns_av_sigmaI/netI    0.3731
_diffrn_reflns_limit_h_max       16
_diffrn_reflns_limit_h_min       -14
_diffrn_reflns_limit_k_max       31
_diffrn_reflns_limit_k_min       -31
_diffrn_reflns_limit_l_max       16
_diffrn_reflns_limit_l_min       -17
_diffrn_reflns_number            12010
_diffrn_reflns_theta_full        27.48
_diffrn_reflns_theta_max         27.48
_diffrn_reflns_theta_min         2.23
_exptl_absorpt_coefficient_mu    0.348
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.436
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             1840
_refine_diff_density_max         0.530
_refine_diff_density_min         -0.390
_refine_diff_density_rms         0.092
_refine_ls_extinction_coef       0.0001(7)
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^
_refine_ls_extinction_method     SHELXL
_refine_ls_goodness_of_fit_ref   0.818
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     551
_refine_ls_number_reflns         7815
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      0.818
_refine_ls_R_factor_all          0.3480
_refine_ls_R_factor_gt           0.1130
_refine_ls_shift/su_max          0.004
_refine_ls_shift/su_mean         0.001
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.1392P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.2518
_refine_ls_wR_factor_ref         0.3458
_reflns_number_gt                1673
_reflns_number_total             7815
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ja0465092si20040613_051020.cif
_cod_data_source_block           sx149
_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 
;
_cod_original_cell_volume        4182.4(15)
_cod_original_sg_symbol_H-M      P2(1)/n
_cod_original_formula_sum        'C18 H11 Cl2 N7 O3.50'
_cod_database_code               4122235