Single-step synthesis of D3h-symmetric bicyclooxacalixarenes.
Katz, Jeffrey L.; Selby, Kevin J.; Conry, Rebecca R.; Organic letters 7 (2005) 3505–3507; doi:10.1021/ol051180q

data_1506637
_publ_section_title
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 Single-step synthesis of D3h-symmetric bicyclooxacalixarenes.
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_journal_issue                   16
_journal_name_full               'Organic letters'
_journal_page_first              3505
_journal_page_last               3507
_journal_paper_doi               10.1021/ol051180q
_journal_volume                  7
_journal_year                    2005
_chemical_formula_sum            'C36 H24 N6 O20'
_chemical_formula_weight         860.61
_chemical_melting_point_gt       533
_chemical_name_common            'compound 4 acetone solvate'
_chemical_name_systematic
;
     4,6,16,18,31,33-hexanitro-2,8,14,20,29,35-
hexaoxabicyclocalix[4]arene
;
_space_group_IT_number           15
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-C 2yc'
_symmetry_space_group_name_H-M   'C 1 2/c 1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXTL
_cell_angle_alpha                90.00
_cell_angle_beta                 91.3940(10)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   9.3865(8)
_cell_length_b                   21.2279(17)
_cell_length_c                   18.8177(15)
_cell_measurement_reflns_used    8158
_cell_measurement_temperature    167(2)
_cell_measurement_theta_max      28.17
_cell_measurement_theta_min      2.17
_cell_volume                     3748.4(5)
_computing_cell_refinement       'Bruker SMART'
_computing_data_collection       'Bruker SMART'
_computing_data_reduction        'Bruker SAINT'
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'Bruker SHELXTL'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      167(2)
_diffrn_measured_fraction_theta_full 0.959
_diffrn_measured_fraction_theta_max 0.959
_diffrn_measurement_device_type  'CCD area detector'
_diffrn_measurement_method       'phi and omega scans'
_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  0.1268
_diffrn_reflns_av_sigmaI/netI    0.0688
_diffrn_reflns_limit_h_max       12
_diffrn_reflns_limit_h_min       -12
_diffrn_reflns_limit_k_max       28
_diffrn_reflns_limit_k_min       -27
_diffrn_reflns_limit_l_max       24
_diffrn_reflns_limit_l_min       -24
_diffrn_reflns_number            16695
_diffrn_reflns_theta_full        28.31
_diffrn_reflns_theta_max         28.31
_diffrn_reflns_theta_min         1.92
_exptl_absorpt_coefficient_mu    0.128
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.525
_exptl_crystal_density_meas      ?
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       plate
_exptl_crystal_F_000             1768
_exptl_crystal_size_max          0.65
_exptl_crystal_size_mid          0.35
_exptl_crystal_size_min          0.14
_refine_diff_density_max         0.435
_refine_diff_density_min         -0.296
_refine_diff_density_rms         0.061
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.071
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     283
_refine_ls_number_reflns         4489
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.071
_refine_ls_R_factor_all          0.0627
_refine_ls_R_factor_gt           0.0559
_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^)+(0.0913P)^2^+1.3214P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1647
_refine_ls_wR_factor_ref         0.1712
_reflns_number_gt                3752
_reflns_number_total             4489
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ol051180qsi20050519_042848.cif
_cod_data_source_block           cif_1
_cod_depositor_comments
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The following automatic conversions were performed:

'_chemical_melting_point' tag was changed to
'_chemical_melting_point_gt' since the value was specified 'more
than' ('>') a certain temperature. The value '>533K' was changed to
'533' - it should be numeric and without a unit
designator.

'_symmetry_cell_setting' value 'Monoclinic' changed to
'monoclinic' according to
/home/saulius/struct/CIF-dictionaries/cif_core.dic dictionary named
'cif_core.dic' version 2.4.1 from 2010-06-29.

Automatic conversion script
Id: cif_fix_values 1715 2011-07-08 13:25:40Z adriana 

The following automatic conversions were performed:

'_exptl_crystal_density_meas' value 'not_measured' was changed to '?'
- the value is perceived as not measured.

Automatic conversion script
Id: cif_fix_values 3008 2015-01-20 13:52:24Z robertas 
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_cod_original_sg_symbol_H-M      C2/c
_cod_database_code               1506637